News U29

NANBIOSIS Showcases Biosensor Innovation as Sponsor of EBS2025 in Tarragona

NANBIOSIS sponsored EBS2025 in Tarragona, showcasing the advances of Units 2 & 29 in antibodies and oligonucleotides for next-gen biosensors.

Tarragona, October 2025 — NANBIOSIS proudly participated as an official sponsor of the 5th European Biosensor Symposium (EBS2025), held from 26 to 29 October 2025 in Tarragona. The international event, chaired by Prof. Dr. M. Pilar Marco (IQAC-CSIC / CIBER-BBN and Scientific Director of Unit 2 of NANBIOSIS), brought together hundreds of researchers, engineers and industry leaders to discuss the latest advances in biosensors, nanotechnology, microfluidics, and diagnostic devices.

Through its Unit 2 and Unit 29, NANBIOSIS highlighted its key role in supporting cutting-edge biosensor research and development — from custom antibody generation to oligonucleotide synthesis — providing essential technological capabilities for the next generation of diagnostic and monitoring tools.

NANBIOSIS: Driving Innovation in Biosensor Research

As a national Singular Scientific and Technical Infrastructure (ICTS), NANBIOSIS provides open access to advanced facilities and expert support in biomedicine, nanomedicine, biomaterials and biosensors.
Its participation in EBS2025 reinforces the infrastructure’s mission to bridge academic research and industrial innovation, helping translate discoveries into practical applications that benefit health, environment, and society.

Unit 2: Custom Antibody Service (CAbS-Nb4D-CSIC)

Represented at the symposium by members of the Nanobiotechnology for Diagnostics (Nb4D) group at IQAC-CSIC, Unit 2 showcased its extensive experience in the design, production and characterization of custom immunoreagents.

The Custom Antibody Service (CAbS) provides comprehensive solutions for hapten synthesis, monoclonal and polyclonal antibody generation, and antibody conjugation with enzymes, fluorophores or nanoparticles.
Its ISO 9001:2015-certified processes ensure high-quality reagents for biosensing applications across sectors such as medical diagnostics, food safety, environmental monitoring, and biomarker detection.

During EBS2025, the Nb4D group, which also chaired the conference, presented advances in immunosensor design and analytical performance optimization, highlighting how antibody engineering can enhance biosensor sensitivity and selectivity.

Unit 29: Oligonucleotide Synthesis Platform (OSP)

Also based at IQAC-CSIC, Unit 29 – the Oligonucleotide Synthesis Platform (OSP) – plays a pivotal role in developing nucleic-acid-based biosensors. The unit specializes in the synthesis, purification and characterization of modified oligonucleotides, including DNA and RNA derivatives conjugated with lipids, peptides or carbohydrates.

At EBS2025, Unit 29 representatives engaged with researchers developing aptamer-based biosensors and nucleic acid diagnostics, exploring opportunities for collaboration in sequence modification, bioconjugation and sensor surface functionalization.

These capabilities align closely with current trends in biosensing and nanotechnology, where hybrid bio-nano systems are key to creating more sensitive, specific, and portable diagnostic devices.

Dr. Nuria Pascual, Scientific Coordinator of **Unit 2**, at EBS2025

Strengthening Collaboration in the European Biosensor Community

EBS2025 offered NANBIOSIS a valuable opportunity to connect with international experts, startups, and industry partners. The symposium’s scientific sessions showcased breakthroughs in AI-enhanced biosensors, organ-on-chip models, nanomaterial-based detection, and wearable diagnostic technologies.

Through its sponsorship and active participation, NANBIOSIS reaffirmed its role as a strategic partner in European biosensor research, offering comprehensive services that cover the entire innovation pipeline – from biomolecule design to device functionalization and validation.

Dr. Anna Aviñó,Scientific Coordinator of **Unit 29**, at EBS2025

About the European Biosensor Symposium 2025

The 5th European Biosensor Symposium (EBS2025) took place in the Tarragona Exhibition and Congress Center, gathering leading scientists from academia and industry. The event was organized by IQAC-CSIC and CIBER-BBN, under the leadership of Prof. M. Pilar Marco, with support from sponsors such as NANBIOSIS, Universitat Rovira i Virgili (URV), and Reial Acadèmia de Farmàcia de Catalunya.

The symposium addressed emerging trends in biosensing technologies, micro- and nanofabrication, artificial intelligence for diagnostics, and organ-on-chip platforms – reflecting the multidisciplinary nature of modern biosensor research.

What is NANBIOSIS?

The goal of NANBIOSIS is to provide comprehensive and integrated advanced solutions for companies and research institutions in biomedical applications. All of this is done through a single-entry point, involving the design and production of biomaterials, nanomaterials, and their nanoconjugates. This includes their characterization from physical-chemical, functional, toxicological, and biological perspectives (preclinical validation).

In order to access our Cutting-Edge Biomedical Solutions with priority access, enter our Competitive Call here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

NANBIOSIS Strengthens Internal Collaboration at 2025 Networking Event in Cáceres

NANBIOSIS held its 2025 networking event in Cáceres to boost collaboration among Units in biomaterials, nanomedicine, and biomedical research.

Cáceres, October 2025 — From 22 to 24 October 2025, the Singular Scientific and Technical Infrastructure (ICTS) NANBIOSIS held its annual internal networking event at the Centro de Cirugía de Mínima Invasión Jesús Usón (CCMIJU) in Cáceres, Spain. The event brought together Unit coordinators, researchers, and technical staff from across Spain to foster collaboration, share scientific progress, and explore new opportunities for joint projects in biomedical research, nanomedicine, and biotechnology.

A meeting to boost collaboration across NANBIOSIS Units

The three-day event was designed to enhance synergy among all the Units that make up NANBIOSIS, a distributed infrastructure offering cutting-edge services for biomaterials, nanomaterials, bioimaging, preclinical validation, and high-performance computing.

The meeting opened on 22 October with a welcome address by the Secretary General for Science of the Junta de Extremadura, who highlighted the strategic importance of research infrastructures like NANBIOSIS for innovation in health technologies. This was followed by an introduction to the initiative “Cutting Edge Biomedical Solutions”, reinforcing the mission of NANBIOSIS to support advanced biomedical development.

That afternoon, participants presented their work grouped under three scientific programmes:

Programme 1: Production of Biomolecules (Units 1 to 3 and 29)
Programme 2: Production of Biomaterials and Nanomaterials (Units 6 to 10)
Programme 5: High-Performance Computing (Unit 27)

The day concluded with a networking session encouraging informal exchanges and inter-Unit dialogue, in the context of the outstanding facilities of CCMIJU, one of the three nodes that form NANBIOSIS.

Guided Tour and Technical Presentations at CCMIJU

On 23 October, participants took part in a guided tour of CCMIJU, visiting the centre’s advanced research facilities in preclinical studies, imaging technologies, and tissue engineering.

After a short coffee break, the morning continued with presentations from Programme 3: Preclinical Validation – Characterisation of Tissues, Biomaterials and Surfaces (Units 12 to 19, and 30). Finally, the last programme was explained that same day in the afternoon, with Programme 4: Preclinical Validation – Bioimaging (Units 20 to 26, and 28).

Similarly to the previous day, throughout the day networking sessions facilitated direct interaction between teams, helping identify new collaboration opportunities across scientific programmes.

To close the technical sessions, participants joined “The NANBIOSIS Contest”, an interactive Kahoot-style quiz promoting engagement and friendly competition. In the evening, a guided cultural visit of Cáceres allowed attendees to explore the historic city’s UNESCO World Heritage old town.

Strengthening the NANBIOSIS Network

The final day, 24 October, saw participants returning to Madrid, concluding an event marked by enthusiasm, collaboration, and a strong sense of community across the infrastructure.

This internal networking event successfully:

Reinforced communication and coordination among NANBIOSIS Units.
Promoted awareness of each Unit’s services, equipment, and expertise.
Laid the groundwork for new interdisciplinary collaborations and new CEBS.
Highlighted the role of NANBIOSIS as a national and international reference in biomedical innovation and nanotechnology.

What is NANBIOSIS?

In order to access our Cutting-Edge Biomedical Solutions with priority access, enter our Competitive Call here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

New book release: Second edition of Nucleic Acids Chemistry explores advances in biomedicine and nanotechnology

Second edition of Nucleic Acids Chemistry explores novel modifications and RNA therapeutics for biomedicine, nanomedicine, and nanotechnology.

Barcelona, September, 2025 — The second edition of the book Nucleic Acids Chemistry. Modifications and Conjugates for Biomedicine and Nanotechnology will be released on September 1st, 2025, published by De Gruyter (Berlin). This updated volume expands on the successful first edition published in 2021, incorporating recent scientific advances in nucleic acids research with applications in biomedicine, nanomedicine, and nanotechnology.

With 414 pages of updated content (ISBN: 978-3-11-142468-2), the book provides a comprehensive overview of nucleic acid modifications, backbone engineering, and therapeutic conjugates, as well as the latest breakthroughs in RNA therapeutics, including CRISPR/Cas9 gene editing, RNA editing, and mRNA vaccines.

Main topics covered:

Novel backbones for therapeutic nucleic acids
Lipid, peptide and protein-oligonucleotide conjugates
Modified DNA nanostructures
Aptamers and DNA catalysts
RNA therapeutics

The second edition also dedicates new chapters to DNA nanotechnology and recent developments in the synthesis and biomedical application of modified nucleic acids, making it an essential reference for researchers working at the intersection of chemistry, molecular biology, biotechnology, and nanomedicine.

Authors and contributors

The book is edited by Ramon Eritja (IQAC-CSIC, CIBER-BBN, NANBIOSIS Unit 29, Barcelona, Spain), with contributions from:

Carme Fàbrega, Anna Aviñó, Santiago Grijalvo, Andreia F. Jorge, Arnau Domínguez, Natalia Navarro (IQAC-CSIC, CIBER-BBN, NANBIOSIS, Barcelona, Spain)
Carlos González (IQF-CSIC, Madrid, Spain)
Raimundo Gargallo (University of Barcelona, Spain)

About the research of the editors

The contributing teams are internationally recognized for their work in nucleic acid chemistry and nanobiotechnology. Their research spans from the chemical synthesis of modified oligonucleotides to the development of functional nucleic acids for therapeutic, diagnostic, and nanotechnological applications.

This book is expected to become a key resource for scientists and students in biochemistry, molecular medicine, and nanotechnology, providing both fundamental knowledge and cutting-edge perspectives on the future of nucleic acids in biomedicine.

For more information, visit the portfolio of NANBIOSIS Unit 29.

What is NANBIOSIS?

In order to access our Cutting-Edge Biomedical Solutions with priority access, enter our Competitive Call here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

The revolutionary path of research in NANBIOSIS and advice on Woman’s Day 2024

Our interview series delve into the journeys of 7 female researchers, their challenges, and the call for gender equality in science, inspiring the next generation.

March 8th 2024, NANBIOSIS (Spain)

Kicking off on 11F “International Day of Women and Girls in Science” 2024, and spanning all the way until Woman’s Day 2024, our interview series has aimed to highlight the life, career and opinions of some of the brilliant minds within our network. Today is time to wrap it up, and for this reason we present you a summary of each of them and a chance to take a deeper look.

In these series we delved into the remarkable journeys, research endeavors, and challenges faced by these exceptional women in their pursuit of scientific excellence. From unraveling the mysteries of nanotechnology to pioneering advancements in biosciences, each researcher’s story resonates with perseverance, resilience, and a fervent commitment to breaking barriers. With no doubt their collective message resonates loudly: a call to inspire and empower the next generation of aspiring researchers, regardless of gender, to embark on their own transformative journeys in the world of science and innovation, as well as speaking out on the issues that female researchers still encounter today.

Anna Aviñó speaks about her journey as a researcher and her captivating oligonucleotides.

“Oligonucleotides (…) are recently being approved as new advanced gene therapies for many diseases, including rare and cardiovascular diseases.”
—Dr. Anna Aviñó, scientific coordinator of Unit 29.

Our leading chemist, specialized in nucleic acid chemistry, was the first interview published in these series. She offered us insights into her current projects focused on synthetic and structural studies of oligonucleotides. With a deep understanding of their applications in gene therapies and biosensors, Dr. Aviñó highlighted her contributions to the field and addressed challenges faced as a woman scientist.

Through her expertise and dedication, she advocates for gender equality in science, emphasizing the importance of unbiased education and empowering young women to pursue careers in research.

You can read the full interview here.

Dr. Martín tells us about her innovations in cancer treatment with nanoparticles.

“There are challenging moments during a scientific career (…), but in the end, persistence pays off.”
—Dr. Ana Martín, collaborator scientist in Unit 9.

Ana has a multifaceted background spanning Veterinary Medicine, Biochemistry, and a Ph.D. And in this second part of our series she welcomed us into a world of scientific inquiry and innovation. In this interview, Ana shared her pioneering work in cancer research, utilizing nanoparticles for anti-tumor treatments. Ana also reflected on gender equality in science, the challenges of balancing motherhood with a scientific career, and her aspirations for a more inclusive scientific community.

You can read the full interview here.

Prof. Peña gave us her insightful point of view in overcoming challenges, embracing passion, and cultivating collaborative success towards career estabilization.

“The most important thing in your professional career is to dedicate yourself to something you love (…) that’s incredibly important from a professional point of view.”
—Prof. Estefanía Peña, Scientific Coordinator of Unit 13.

In a captivating interview, Professor Estefanía Peña shared her insights on overcoming challenges, nurturing passion, and fostering collaborative success in achieving career stability. Amidst the bustling R&D environment, Professor Peña’s laboratory serves as a beacon of innovation and determination. With enthusiasm and warmth, she discussed her journey in computational modeling and biomedical engineering, highlighting her experiences, hurdles, and victories. Professor Peña’s story resonates as a testament to perseverance and dedication, offering valuable advice to aspiring researchers on following their passions.

You can read the full interview here.

Our expert in nanocarriers talks about her journey from biotechnology to cancer therapy, an example of passion and perseverance in science.

“I am fortunate to be able to devote myself to something I am passionate about. Research is something I enjoy every day.”
—Dr. María Sancho, Researcher at Unit 9.

Dr. Sancho, our expert in nanocarriers and cancer therapy, shared with us her inspiring journey from biotechnology to groundbreaking research. Set in Zaragoza, Spain, the interview highlighted Maria’s passion and perseverance in pursuing scientific excellence. With warmth and enthusiasm, she discussed her innovative work in developing nanocarriers for targeted drug delivery in cancer treatment. Maria’s story serves as a beacon of inspiration for aspiring scientists, showcasing the transformative power of dedication and curiosity in the pursuit of scientific advancement.

You can read the full interview here.

Dr. Vílchez, our esteemed colloidal chemistry researcher, discusses her focus on water-in-water emulsions and microcoacervates. She highlights gender biases in science and advocates for inclusivity and recognition of women’s contributions.

“I would advise (young women) to pursue their dreams, to show others what they are capable of, and not to let themselves be underestimated.”
—Dr. Susana Vílchez, technical and quality manager of Unit 12.

Dr. Vílchez offered a profound insight into her research endeavors and career trajectory. Specializing in the characterization of colloidal systems such as micelles, vesicles, emulsions, and more, her current focus lies on the intriguing realm of water-in-water emulsions and the formation of microcoacervates, serving as a model for membraneless organelles (MLO) by introducing DNA into these emulsions. During the interview, Dr. Vílchez also shed light on the gender biases prevalent in her field and offered invaluable perspectives on fostering gender equality in science. Through her experiences and unwavering dedication, she inspires young women to pursue their scientific aspirations while advocating for broader inclusivity and recognition of women’s contributions in shaping the scientific landscape.

You can read the full interview here.

Dr. Mincholé discusses cardiac risk assessment, gender challenges in science, and the transformative potential of Digital Twins in healthcare research.

“(I) design and work on a research line that combines computational models with cardiac signals and images. This was done with the aim of stratifying arrhythmic risk and understanding its mechanisms.”
—Dr. Ana Mincholé, researcher at Unit 27.

In this part 6 of our interview series, Dr. Ana Mincholé discussed her groundbreaking work in cardiac risk assessment, gender challenges in science, and the transformative potential of Digital Twins in healthcare research. Dr. Mincholé’s insights offered a glimpse into her innovative approach to integrating computational models with clinical data to advance cardiac care. Her passion for science and dedication to promoting diversity in STEM shine through, underscoring the invaluable contributions of women in the field.

You can read the full interview here.

As a bosus, we have recently published the last of our interviews in our YouTube channel.

In this part VII, we had the pleasure to interview Dr. Eli Prats, a brilliant researches from Unit 8 and a fantastic science communicator. Watch it full here:

About NANBIOSIS:

In order to access our Cutting-Edge Biomedical Solutions, place your request here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

The new official webpage of RED-DM is coordinating research efforts in Myotonic Dystrophy

NANBIOSIS introduces the new webpage of RED-DM, uniting experts to combat Myotonic Dystrophy. Highlighting Ramón Eritja’s group’s pivotal role.

29 February 2024, IQAC-CSIC (Barcelona)

In a significant stride toward addressing the challenges posed by Myotonic Dystrophy, the Translational Genomics Group of the INCLIVA Health Research Institute (associated with the Valencia Clinical Hospital) and the University of Valencia (BIOTECMED Institute) have spearheaded the establishment of the Red Temática Nacional en Distrofia Miotónica tipo 1 (National Thematic Network in Myotonic Dystrophy Type 1). This progressive and degenerative disease, also referred to simply as DM1, is currently incurable and underdiagnosed. In addition, it can lead to muscle weakness, atrophy, arrhythmias, and cognitive deficits. This multidisciplinary network brings together leading research groups in DM1 and the development of oligonucleotide-based therapies (small RNA fragments) at a national level, organized to collaborate cohesively and drive forward the study and development of medications to treat this worrisome condition.

One of the key pieces of this initiative is the prominent role played by the group led by Ramón Eritja, a distinguished researcher affiliated with NANBIOSIS through his Unit 29. Prof. Eritja’s group brings unparalleled expertise in oligonucleotide research to RED-DM. With a proven track record in developing innovative therapies and unique oligonucleotide designs, their pioneering work significantly advances the understanding and treatment of Myotonic Dystrophy, offering hope to countless individuals affected by this debilitating condition.

What is Myotonic Dystrophy?

Myotonic Distrophy Type 1 (DM1), also known as Steinert’s disease, stands as a challenging hereditary muscular dystrophy characterized by myotonia, muscle wasting, and weakness with multiorgan involvement. Its clinical hallmarks include respiratory problems, cardiac arrhythmias stemming from defects in the heart’s muscle conduction system, early-onset cataracts, hypogonadism, insulin resistance, and hypersomnia, among others. It is the most prevalent form of muscular dystrophy appearing in adulthood, affecting approximately one case per 8,000 individuals in European populations.

To know more about DM1, visit the RED-DM webpage.

Introducing the new RED-DM webpage:

The newly launched official webpage of RED-DM serves as a hub for disseminating information, fostering collaboration, and facilitating communication among researchers, clinicians, and stakeholders invested in combating DM1. It provides a platform to showcase ongoing research endeavors, share resources, and promote dialogue to accelerate progress in understanding and treating this complex disease.

Through the concerted efforts of RED-DM and its constituent research groups, including the pivotal contribution of Ramón Eritja’s team, a unified approach to tackling DM1 is being realized. By leveraging collective expertise and resources, RED-DM aims to catalyze advancements in therapeutic interventions and ultimately improve outcomes for individuals affected by this debilitating disease.

For further information and updates on RED-DM’s initiatives and collaborative efforts, visit the newly launched official webpage here.

This article is in the context of Rare Disease Day 2024. To stay up to date, visit our news section here.

Additional information:

In order to access our biomedical Solutions, apply here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

Women in NANBIOSIS part 1: Anna Aviñó, from Curiosity to Innovation

Anna Aviñó speaks about her journey as a researcher and her captivating oligonucleotides.

This is part of a series of interviews to several female researchers within the context of International Day of Women and Girls in Science 2024 and Woman’s Day 2024. For more interviews, visit our news section here.

February 2024, IQAC-CSIC/CIBER-BBN, Barcelona (Spain)

Could you share with us a bit about your research area and the projects you are currently working on?

I am a chemist specializing in nucleic acid chemistry. These compounds are wonderful, I would say unique; not only do they contain genetic information, but they are also involved in countless biological processes. My focus lies in synthetic and structural studies of small nucleic acids, known as oligonucleotides.

And these compounds, what are they used for?

Oligonucleotides can adopt different structures, including canonical duplexes as well as other secondary structures like quadruplexes and triplexes, the latter being particularly important in many diseases. I apply my chemical knowledge to generate and evaluate therapeutic oligonucleotides (such as antisense, siRNA, aptamers). Furthermore, oligonucleotides are so versatile that I also use them as recognition elements in various biosensors to detect pathogens, disease-related genes, etc.

“Oligonucleotides (…) are recently being approved as new advanced gene therapies for many diseases, including rare and cardiovascular diseases.“

—Dr. Anna Aviñó, scientific coordinator of Unit 29.

What motivated you to choose a career as a researcher? What have been the biggest challenges you have faced as a woman scientist?

I wanted to understand what things are made of, how medicines are made… I am currently 55 years old with a long scientific career, but it has never been easy to balance top-level research with family life. I have to thank CIBER as it’s the longest contract I’ve had, but I also have to say that I haven’t had opportunities for career advancement within it.

Have you experienced any kind of gender bias or added difficulty in your scientific career? How have you addressed this situation?

I haven’t faced any added difficulty per se, but the reality is that in my research center, the principal investigators are predominantly women with few family responsibilities.

How do you think gender stereotypes in the scientific field can be overcome? And what advice would you give to young women considering a career in science?

I think that stereotypes can be overcome by promoting unbiased education in schools regardless of the field of study. I would definitely encourage young women and advise them not to be afraid to pursue positions of responsibility.

What do you consider to be your greatest achievement or contribution in your field?

The oligonucleotides, which are my area of study as I mentioned, are recently being approved as new advanced gene therapies for many diseases, including rare and cardiovascular diseases. I can say that I can synthesize drugs in my laboratory, and furthermore, I believe I am the person who has conducted the most synthesis of these products in Spain!

What support have you received throughout your career that has been particularly helpful?

As I mentioned, thanks to CIBER, I continue to be a researcher. However, I am currently in a delicate situation because my principal investigator is retiring, and I don’t know how my scientific career will continue.

What changes would you like to see in the scientific world to promote gender equality? How do you think we can encourage more women and girls to participate in science?

The scientific world is not particularly biased in terms of gender equality. However, leadership positions tend to be held by men, even though more women are starting careers in research. Regarding encouraging more women, as I mentioned, education. Education is the key.

For more interviews like this, visit our news section here.

Additional information:

In order to access our biomedical Solutions, apply here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

‘Magic Bullets’ Against Cancer: Unveiling the Potential of DNA Nanoparticles

DNA nanoparticles to selectively target tumor tissues through precise control of the synergies between transported drugs.

February 2024, IQAC-CSIC/CIBER-BBN, Barcelona. The team led by Drs. Carme Fàbrega and Ramón Eritja, in close collaboration with 3 units of the NANBIOSIS ICTS, has developed a new strategy to improve the efficacy and reduce the toxicity of anticancer drugs. They have chemically linked several cytotoxic drugs, currently used in the treatment of various types of tumors, to DNA nanostructures. These structures selectively target cancerous tissues through folate receptors. This tactic allows precise control of drug concentration and exploits their combined effect. The results of this study represent a significant step forward towards the development of more effective and safer cancer treatments. This year 2024, they published their study in the Nanomedicine journal by Elsevier.

“The ‘Magic Bullet’ of Dr. Ehrlich” is not the title of an old pulp magazine. Rather, it is the concept that the German physician and Nobel Prize winner coined to refer to an ideal therapeutic agent capable of acting specifically against a particular disease without affecting healthy cells.

In the case of cancer therapies, we are far from reaching that magic bullet. However, science is bringing us closer to it every day.

Many current anticancer drugs are designed to intercalate into the DNA of cells and alter their function, inducing cell death. One of the most significant problems with these therapies is their adverse effects, as these drugs can also affect non-tumor cells. One way to compensate for this is by combining multiple drugs, creating synergies between them. However, this often greatly hinders both drugs from reaching the target tissue at the appropriate concentrations to exert their synergy.

A strategy to approach the concept coined by the Nobel Prize involves selectively directing drugs towards cancerous tissues and releasing them in a controlled and localized manner. This increases their concentration in the tumor area, reducing the effect on the rest of the organs and tissues.

Thanks to the ability of many drugs to intercalate into DNA, one of the most promising vehicles are DNA nanostructures. These artificially constructed nanocarriers can retain the drug and, due to their enormous versatility, can be designed to selectively target the tumor. Once there, they release the drug in a controlled manner into the cancer cells, ensuring that healthy tissues are not exposed to a toxic concentration of the drug.

However, these DNA nanocarriers face several challenges: low internalization in diseased cells, low selectivity of the target tissues, or limited control over the amount of drug loaded inside and how it binds. Additionally, they only allow the transport of DNA intercalating drugs, limiting the range of applicable therapies.

In a recent study published in the Nanomedicine journal by Elsevier, the team led by Dr. Carme Fàbrega and Dr. Ramón Eritja, in close collaboration with 3 units of the NANBIOSIS ICTS, present a new approach [1]. Through a strategy to control the binding of the drug and its concentration within their DNA nanostructures, they have succeeded in increasing efficacy and reducing toxicity.

Instead of intercalating the drugs as usual, the researchers chemically conjugated each drug to a piece of the puzzle that would later form the nanostructure. They managed this way to precisely attach three anticancer drugs to their vehicles, each of them acting on a different anticancer mechanism and promoting a synergistic effect between them. Additionally, they achieved selective targeting by binding their nanostructures to folate receptors, expressed massively in a wide variety of tumor types.

This pioneering methodology is capable of attaching multiple drugs to DNA nanostructures, each at predetermined concentrations. This represents a leap forward in advancing towards the generation of that effective and harmless magic bullet that Dr. Ehrlich envisioned.

References

[1] Natalia Navarro, Anna Aviñó, Òscar Domènech, Jordi H. Borrell, Ramon Eritja, Carme Fàbrega, Defined covalent attachment of three cancer drugs to DNA origami increases cytotoxicity at nanomolar concentration, Nanomedicine: Nanotechnology, Biology and Medicine, Volume 55, 2024, 102722, ISSN 1549-9634, DOI: 10.1016/j.nano.2023.102722.

Additional information

In this project, three NANBIOSIS units have collaborated: Unit 12, with a characterization and scientific advisory role; Unit 18, providing one of the nanotoxic drugs; and Unit 29, contributing to the synthesis of oligonucleotides.

The goal of NANBIOSIS is to provide comprehensive and integrated advanced solutions for companies and research institutions in biomedical applications. All of this is done through a single-entry point, involving the design and production of biomaterials, nanomaterials, and their nanoconjugates, along with their characterization from physical-chemical, functional, toxicological, and biological perspectives (preclinical validation).

In order to access our biomedical Solutions, apply here.

NANBIOSIS has worked with pharmaceutical companies of all sizes in the areas of drug delivery, biomaterials and regenerative medicine. Here are a few of them:

• Read More

New method for the detection of RNA viruses such as SARS-CoV-2

Several CIBER-BBN groups at the University of Barcelona, the Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), the Institute of Microelectronics of Barcelona (IMB-CNM-CSIC) and the Institute of Nanoscience and Materials of Aragon (INMA) —a joint institute of the CSIC and the University of Zaragoza (UNIZAR)— have developed a new method for detecting RNA viruses based on the technology of using probes that form triplex structures. This innovative methodology opens up new options to detect viruses such as SARS-CoV-2, the influenza A (H1N1) virus or the respiratory syncytial virus (RSV), a pathogen that affects newborns and requires differential diagnostic care.

This interdisciplinary work, published in the International Journal of Molecular Sciences, is led by Carlos J. Ciudad and Verónica Noé, from the Faculty of Pharmacy and Food Sciences and the Institute of Nanoscience and Nanotechnology (IN2UB) of the University of Barcelona ; Ramón Eritja, Anna Aviñó, Lluïsa Vilaplana and M.Pilar Marco, from IQAC-CSIC and CIBER-BBN; Manuel Gutiérrez, Antoni Baldi and César Fernández, from the IMB-CNM-CSIC, and Valeria Grazu and Jesús Martínez, CSIC researchers at the Institute of Nanoscience and Materials and Aragon INMA (CSIC-UNIZAR) and CIBER-BBN.

The research has counted with the expertise of two NANBIOSIS Units from CIBER-BBN and IQAC-CSIC; NANBIOSIS U2 Customized Antibody Service (CAbS), led by Pilar Marco and Nuria Pascual, and U29 Oligonucleotide Synthesis Platform (OSP), led by Ramón Eritja and Anna Avinó.

This research work was carried out in the context of the PoC4CoV project, led by M. Pilar Marco and César Fernández and financed through the Interdisciplinary Thematic Platform of Global Health of the CSIC. Subsequently, the research has continued as part of a project financed by La Marató de TV3 in 2020 to fight against COVID-19 in which experts from the Faculty of Chemistry of the UB also participate.

Polypurine tweezers to capture viral RNA
The new methodology is based on the ability of polypurine tweezers (PPRHs) —designed by the UB cancer therapy group— to capture viral RNA and form a high affinity triplex. When this hybrid structure is connected to a molecular probe and is brought into contact with the affected patient’s sample, a viral agent detection signal is obtained. The method now presented in the scientific publication has been called the Triplex Enhanced Nucleic Acid Detection Assay (TENADA).

“PPRHs are unmodified single-stranded DNA hairpins that are made up of two mirror domains of antiparallel polypurines. These domains, connected to each other by a thymidine loop, are linked by intramolecular reverse Hoogsteen bonds. Molecular tweezers can specifically bind to polypyrimidine sequences in single-stranded (ssDNA), double-stranded (dsDNA) or RNA viruses through Watson-Crick bonds, thus forming an antiparallel triplex”, details Professor Carlos J. Ciudad, from the Department of Biochemistry and Physiology of the UB.

An effective and faster methodology than the PCR test
Among the advantages that it presents in the detection of viral RNA, it should be noted that the PPRHs methodology can be applied without the intervention of reverse transcriptase —the enzyme that converts RNA into DNA— or the thermocycler (the device that amplifies the material samples). DNA with polymerase chain reaction or PCR). In addition, it has a sensitivity and specificity equivalent to that of the PCR test and can provide results in less than an hour.

In the framework of the work, the team used the hybridization sandwich format in various biosensing devices. This approach uses two oligonucleotides: a triplex-forming PPRH hairpin to serve as the capture probe, and a labeled duplex-forming DNA oligonucleotide to serve as the detection probe.

“The triplex-forming PPRH hairpins were designed to bind to SARS-CoV-2 polypyrimidine sequences, while the detection probes were designed to complement a region near the polypyrimidine target site. Thus, the presence of SARS-CoV-2 RNA is detected by the formation of the ternary complex on the surface of the biosensor”, details Professor Verónica Noé (UB-IN2UB).

This methodology has been implemented in a compact electrochemical device that integrates an electrochemical cell with two electrodes on a chip —manufactured in the Micro and Nanofabrication White Room of the IMB-CNM-CSIC— and a paper fluidic component, and in a Lateral thermal flow implemented in nitrocellulose and using plasmonic nanoparticles and thermal paper that has been developed at the INMA (CSIC-UNIZAR).

TENADA: applications in biomedical research
PPRHs are described in the scientific literature as gene silencing tools for various genes mainly involved in cancer. In addition, they have also been incorporated as probes in biosensors for the detection of small RNA molecules (micro-RNA) to determine the state of DNA methylation and for the diagnosis of pneumonia caused by the fungus Pneumocystis jirovecii.

Now, the new TENADA methodology proves to be effective not only in the detection of viral particles. The high affinity of PPRHs for viral RNA is a property that can be applied to inhibit the virus replication process. For this reason, the antiviral properties of CC1PPRH and CC2PPRH polypurine clamps in cells of the VeroE6 lineage infected with SARS-CoV-2 virions are now also being studied.

In parallel, the work of the different groups involved has also been the basis of a technology that was patented and licensed in July 2022 through the participation of the UB Patent Center, the CSIC and the CIBER-BBN. In turn, this patent has been licensed non-exclusively to the Spanish company Nanoinmunotech through the management of the Bosch i Gimpera Foundation (FBG-UB) in the technology protection process and the company’s license agreement. .

Article of reference:

Aviñó, A.; Cuestas-Ayllón, C.; Gutiérrez-Capitán, M.; Vilaplana, L.; Grazu, V.; Noé, V.; Balada, E.; Baldi, A.; Félix, A.J.; Aubets, E.; Valiuska, S.; Domínguez, A.; Gargallo, R.; Eritja, R.; Marco, M.-P.; Fernández-Sánchez, C.; Martínez de la Fuente, J.; Ciudad, C.J. «Detection of SARS-CoV-2 Virus by Triplex Enhanced Nucleic Acid Detection Assay (TENADA)». International Journal of Molecular Sciences, diciembre de 2022. Doi:10.3390/ijms232315258

• Read More

Happy Day of Chemistry! The role of Chemistry in a sustainable research in health

Today, November 15 is a day of celebration for us, the Day of the Chemistry in Spain!

Chemistry is the science that studies matter, how it is composed, its properties and how its structures are transformed and, as matter is everything, including living beings and ourselves, we can say that chemistry is omnipresent and transversal in all areas surrounding us. Chemistry is everywhere, we ourselves are chemistry and our health and our life is chemistry.

“Everything around us is chemistry in the environment, foods, what we use and what we touch every day. Our own body is a sophisticated complex factory with an infinite number of chemical processes taking place on a perfect and synchronized manner”- points Pilar Marco, Scientific Director of NANBIOSIS U2 Custom Antibody Service (CAbS) from CIBER-BBN at IQAC-CSIC.

The crucial role of chemistry in everyday life is also evidence in the development of current technology and the economy. According the VCI Prognos Study, the Global growth forecast for Industrial Sectors, places the chemical industry in the fist position. As far as national picture, the INE Statistics on R+D Activities 2020 -last publish report-, chemical and pharmaceutical industry employs the 22,2 % of research staff recruited and the investment and expenditure on the chemical and pharmaceutical industry represents the 23,6% R+D and Innovation -above the motor vehicles industry.

Thanks to chemical and pharmaceutical research,

medicines, vaccines and health products have made great strides in fighting diseases and improving quality of life. Thanks to chemical and pharmaceutical medicine research, in few years, it will be possible, for example, to count on smart implants delivering personalised drugs only where cancer or infections are detected or biosensors circulating in our body to find diseases only one week after infection.

At the Institute of Advanced Chemistry of Catalonia, four NANBIOSIS units of CIBER-BBN use chemistry to deliver new therapeutic and diagnostic approaches that improve the quality of life of the society.

One of the research lines of the Nb4D group-U2 CabS at IQAC-CSIC (led by Pilar Marco and Nuria Pascual) focuses on the chemical signals that bacteria emit to communicate with each other and thus develop virulence mechanisms. Their knowledge will allow the development of new therapeutic and diagnostic strategies to mitigate the serious problem of antimicrobial resistance.

NANBIOSIS U3 Synthesis of Peptides Unit– MS4N group, led by Miriam Royo, explores the use of diverse types of chemical multivalent platforms (oligomers, dendrimers, polymers, micelles and lipid nanovesicles) for the development of drug delivery systems for cancer treatment, protein delivery systems for the treatment of lysosomal diseases and macromolecular compounds that have intrinsically therapeutic properties with application to central nervous system diseases.

Chemistry plays an essential role in helping society achieve Sustainable Development Goals (SDGs)

In 2015 the United Nations created a universal call to action to end poverty, protect the planet, and ensure that all people enjoy peace and prosperity by 2030. This framework, comprising 17 aspirational goals known as the Sustainable Development Goals (SDGs)

Chemistry is key to achieve the SDG 3: Good Health & Well-Being with the development of new technologies that will provide a deeper understaunding of human health, making posible better, cheeper and faster medical diagnosis and treatmens.

In this sense, Carlos Rodriguez Abreu, Scientific Director of NANBIOSIS Unit for the characterization of nanostructured liquids (U12) explains: “The goals of sustainable development are producing a shift towards surfactants not based on petroleum derivatives, but derived from other raw materials that are more biocompatible and that allow a circular economy that is less aggressive with the environment. Quality control is necessary with regard to the properties of the products that contain surfactants, such as the droplet size in emulsions, the particle size in suspensions, their colloidal stability over time, among others. Additionally, products must be precisely formulated to optimize the use of raw materials and obtain the desired properties. In this context, the NANBIOSIS U12, acredited with ISO 9001:2015 by AENOR, offers a wide range of advanced analysis techniques for the determination of different colloidal properties such as droplet size and particle size, colloidal stability, viscosity, surface tension, pore size distribution, and determination of phase behavior and structure for the tailor-made formulation of surfactant and colloid systems for pharmaceutical and biomedical applications.

The Nucleic Acid Chemistry group at IQAC-CSIC – NANBIOSIS U29 Oligonucleotide Synthesis Platform (OSP) is developing new compounds based in DNA and RNA to detect and treat diseases participating in several projects with several research and industrial partners such as La Marato de TV3 (Covid), Oligofastx, Caminan2, Osteoatx. These new drugs use the natural mechanisms for gene regulation to treat undruggable diseases such Muscular dystrophy and others. Importantly special attention is made to design novel synthetic protocols to produce less organic waste what contributes to the sustainable development.

We wish to all the family of chemistry professionals new projects and inspiration to achive humans Good Health & Well-Being and keep the world moving!

And Happy Chemistry Day, too, for all the chemistry enthusiasts!

• Read More

1st Nanomedicine Forum of CIBER-BBN/NANBIOSIS and CSIC Nanomed Conection

During the days 30 of June and 1st of July took place in Barcelona, in the auditorium of the Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), the 1st Forum on Nanomedicine gathering scientists from the CSIC net Nanomed Conection and from the CIBER-BBN and its ICTS NANBIOSIS.

This forum brought toguether researchers from the most eminent national research centers in nanomedicine, that during the two days meeting presented their works and findings and discussed the impact of nanomedicine in the fields of drug delivery, diagnosis and therapy.

The workshop was open by the Director of IQAC-CSIC, Jesús Joglar, the Scientific Coordinator of Nanomed Conection, Fernando Herranz, and the Scientific Director of CIBER-BBN, Ramón Martínez Máñez.

18 research groups gave their talks distributed in four sessions:

Nanobiotechnological solutions for diagnosis and therapy
Drug delivery nanosystems
Applications for oncology
Nanomedicine & other frontier applications

The presentations aroused great interest and futher debate among the attendees present in the auditorium (around 50) and the on line participants (The event was also broadcast online previous registration with more than 125 registrations received).

The videos of the presentations will be soon available in the NANBIOSIS youtube channel.

Here we highlight the eight talks by researchers from NANBIOSIS units:

The first session of Nanobiotechnological solutions for diagnosis and therapy, started with the talk by Montserrat Rodríguez from Nb4D group – NANBIOSIS U2 CAbS, from CIBER-BBN and IQAC-CSIC, entitled “Targeting aromatic amino acid metabolism for the early diagnosis of neurological diseases”, presenting their results on in vitro samples, on thermal power characterization experiments to study the thermal efficiency of non-sinusoidal stimulation and on efficiency characterization experiments in cell cultures with cancer cell liness.

Also in this session chaired by Miriam Royo, Scientific Coordinator of NANBIOSIS U3 Synthesis of Peptides Unit of CIBER-BBN and IQAC-CSIC, took place an interesting and passionate talk by Ramón Eritja, Scientific Director of NANBIOSIS U29 Oligonucleotide Synthesis Platform (OSP),

In the last years, interest in therapeutic applications of oligonucleotides has increased enormously, especially after the development of messenger RNA vaccines in response to the COVID-19 pandemic. In this way, metabolic diseases such as dyslipidemia and hereditary diseases such as Duchenne muscular dystrophy have been successfully addressed. The NANBIOSIS Oligonucleotide Synthesis Platform (OSP) focuses on the design, synthesis and characterization of modified oligonucleotides, in order to enhance the therapeutic properties of the oligonucleotides and to improve the control of gene expression. Ramon Eritja presented their most recent results in the development of new conjugates with antiproliferative activity and in the design of DNA probes for the detection of viral genomes.

In the session of “Nanomedicine and other frontiers applications”, chaired by María del Puerto Morales Herrero (ICMM-CSIC), Elena Martínez Fraiz, from the Nanobioengineering group of CIBER-BBN and IBEC running NANBIOSIS Unit 7 of Nanotechnology, presented a nanostructured surface able to produce multivalent effects of surface-bound ephrinB1 ligands on the dynamics of oligomerization of EphB2 receptors whic can benefit applications such as the design of new bioactive materials and drug-delivery systems.

The session of Drug delivery nanosystems, chaired by Ramón Martínez Máñez, began with the talk by Vanessa Díaz Riascos, presesnting the in vivo efficacy, biodistribution and toxicity testing of nanomedicines at NANBIOSIS U20 FVPR, of CIBER-BBN and VHIR, explaining how their texting expertise and their in vivo and ex vivo fluorescence imaging techniques facilitate a rapid and efficient preclinical development of candidates, reducing considerably the time and costs of conventional developments.

Santiago Grijalvo Torrijo, from NANBIOSIS U12 Nanostructured liquid characterization unit expoke about Nano-emulsion-derived polymeric carriers for biomedical applications also discussing the impact of the protein corona on colloidal stability, antioxidant activities, cytotoxicity and cellular uptake of drug-loaded nanoparticles.

Antoni Llopis Lorente, (NANBIOSIS U26 NMR: Biomedical Applications II), expoke about Gated silica nanoparticles for controlled release. Chemical communication, based on the exchange of molecules as messengers, allows different entities to share information, cooperate and orchestrate collective behaviors. Communication using chemical messengers (such as neurotransmitters, hormones and pheromones) is the main way of communication across the natural world; yet engineering chemical communication between micro/nanosystems is a key emergent topic in micro/nanotechnology, biomimicry and related areas. Santiago explainined recent progress by their group in the development of engineered particles for chemical communication and nanomedicine applications.

And closing the session, Mariana Köber (Nanomol Group –NANBIOSIS U6 of Biomaterial Processing and Nanostructuring Unit from CIBER-BBN and ICMAB-CSIC) gave a talk on Quatsomes as versatile nanovesicles for biomedical applications.

In the session of Applications for Oncology, Pilar Martín Duque from NFP group – NANBIOSIS U9 Synthesis of Nanoparticles Unit of CIBER-BBN and INMA-CSIC, gave a very interesting talk explained their approach and recent progress on the search of trojan horses for an improved theragnosis of cancer.

Here we want to thank the Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) for hosting this event and for the help in its preparation and development.

• Read More

You are here : Home / News U29

NANBIOSIS: Driving Innovation in Biosensor Research

Unit 2: Custom Antibody Service (CAbS-Nb4D-CSIC)

Unit 29: Oligonucleotide Synthesis Platform (OSP)

Strengthening Collaboration in the European Biosensor Community

About the European Biosensor Symposium 2025

What is NANBIOSIS?

Leading scientists

Custom solutions

Cutting-Edge facilities

Standards of quality

A meeting to boost collaboration across NANBIOSIS Units

Guided Tour and Technical Presentations at CCMIJU

Strengthening the NANBIOSIS Network

What is NANBIOSIS?

Leading scientists

Custom solutions

Cutting-Edge facilities

Standards of quality

Main topics covered:

Authors and contributors

About the research of the editors

What is NANBIOSIS?

Leading scientists

Custom solutions

Cutting-Edge facilities

Standards of quality

Our interview series delve into the journeys of 7 female researchers, their challenges, and the call for gender equality in science, inspiring the next generation.

Anna Aviñó speaks about her journey as a researcher and her captivating oligonucleotides.

Dr. Martín tells us about her innovations in cancer treatment with nanoparticles.

Prof. Peña gave us her insightful point of view in overcoming challenges, embracing passion, and cultivating collaborative success towards career estabilization.

Our expert in nanocarriers talks about her journey from biotechnology to cancer therapy, an example of passion and perseverance in science.

Dr. Vílchez, our esteemed colloidal chemistry researcher, discusses her focus on water-in-water emulsions and microcoacervates. She highlights gender biases in science and advocates for inclusivity and recognition of women’s contributions.

Dr. Mincholé discusses cardiac risk assessment, gender challenges in science, and the transformative potential of Digital Twins in healthcare research.

As a bosus, we have recently published the last of our interviews in our YouTube channel.

About NANBIOSIS:

NANBIOSIS introduces the new webpage of RED-DM, uniting experts to combat Myotonic Dystrophy. Highlighting Ramón Eritja’s group’s pivotal role.

What is Myotonic Dystrophy?

Introducing the new RED-DM webpage:

Additional information:

Anna Aviñó speaks about her journey as a researcher and her captivating oligonucleotides.

Additional information:

DNA nanoparticles to selectively target tumor tissues through precise control of the synergies between transported drugs.

References

Additional information

Thanks to chemical and pharmaceutical research,

Chemistry plays an essential role in helping society achieve Sustainable Development Goals (SDGs)