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U29. Oligonucleotide Synthesis Platform (OSP)

U2 CAbS-hybridoma clone
Ciber bbn

U29. Oligonucleotide Synthesis Platform (OSP)

  • Scientific Director: Prof. Ramon Eritja: recgma@cid.csic.es
  • Scientific Coordinator: Dr. Anna Aviñó: aaagma@cid.csic.es
  • Entities: Institute of Avanced Chemistry of Catalonia (IQAC), Spanish National Research Council (CSIC)
  • Address: Jordi Girona, 18-26, 088034, Barcelona, Spain
  • Phone: +34 934 006 145
  • Web: IQAC- CSIC
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This unit is coordinated by the Nucleic Acids Chemistry Group at the Institute for Advanced Chemistry of Catalonia (IQAC), Spanish National Research Council (CSIC) and has the equipment needed for the production of oligonucleotides at low scale (mg to mg), purification, characterization and post-synthesis modification. The service counts with laboratories for synthesis and modification of oligonucleotides including DNA/RNA synthesizer, analytical and semi-preparative HPLC equipment for the purification and characterization of oligonucleotides. The service will focus in providing expert opinion to researchers as well as the production of tailored oligonucleotides. Routine synthesis of oligonucleotides used as primers will not be produced as there is a large number of commercial sources that provide a quick and low price service. The oligonucleotide synthesis platform will focus in providing modified oligonucleotides (ONs) that are difficult to obtain from commercial sources. These include microgram to milligram amounts of DNA and RNA derivatives carrying several modifications as well as oligonucleotide conjugates carrying lipids, membrane-receptors ligands, carbohydrates and peptides designed for therapeutic or diagnostic purposes. The facility benefits from the wide experience of Prof. Ramon Eritja that has more than 30 years expertise in the development of modified oligonucleotides.

Active projects

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Other projects

RefTitleFundin OrganismRole
La Marato 2012 (416/C/2013)Genotoxic nanoparticles targeting colorectal cancer stem cellsFundació La Marato 2012Participant
RTC-2014-2038-1New treatments for retina degenerative diseases (TERET). MINECOParticipant
CTQ2014-52588-RSynthetic Nucleic Acids for biomedical applicationsMINECOCoordinator
CTQ2014-61758-EXPDNA nanostructures for celular transfection MINECOParticipant



Selective depletion of metastatic stem cells as therapy for human colorectal cancer. Céspedes, M.V., Unzueta, U., Aviñó, A., Gallardo, A., Álamo, P., Sala, R., Sánchez-Sardi, A., Casanova, I., Mangues, M.A., Lopez-Pousa, A., Eritja, R., Villaverde, A., Vázquez, E., Mangues, R. EMBO Mol. Med., 10, e8772 (2018).

DNA-based nanoscaffolds as vehicles for 5-fluoro-2’-deoxyuridine oligomers in colorectal cancer therapy. Jorge, A.F., Aviñó, A., Pais, A.A.C.C., Eritja, R., Fàbrega, C. Nanoscale, 10, 7238-7249 (2018).

Exploring PAZ/3’-overhang interaction to improve siRNA specificity. A combined experimental and modeling study. Alagia, A., Jorge, A.F., Aviño, A., Cova, T.F.G.G., Crehuet, R., Grijalvo, S., Alberto Pais, A.A.C.C., Eritja, R. Chem. Sci., 9, 2074-2086 (2018).

DNA origami-driven lithography for patterning on gold surfaces with sub-10 nanometer resolution. Gállego, I., Manning, B., Prades, J.D., Mir, M., Samitier, J., Eritja, R. Adv. Mat., 29, 1603233 (2017).

Glucose-nucleobase pseudo base pairs as a new biomolecular interaction in a DNA context. Vengut-Climent, E., Gómez-Pinto, I., Lucas, R., Peñalver, P., Aviñó, A., Fonseca-Guerra, C, Bickelhaupt, F.M.., Eritja, R., González, C., Morales, J.C. Angew. Chem. Int. Ed. Engl., 55, 8643-8647 (2016).

News U29

08 Jun

NANBIOSIS researchers featured in the 15th Edition of Spanish Researchers Ranking

The 15th edition of the Webometrics Ranking of World Universities has been published, ranking researchers in Spain as well as Spaniards doing research abroad. A total of 11 Directors of NANBIOSIS units appear on the most recent list, featured on the top 2000. The list is ordered by the h-index, a metric that calculates research impact based on a correlation of papers published and number of citations, and then by number of citations. The result is a list of whose’s publications have had more impact online. NANBIOSIS researchers featured are Fernando Albericio (#207), scientific director of U3 Synthesis of Peptides[...]

09 Apr

NANBIOSIS U2, U3 & U29 participate in the POC4CoV project to develop diagnostic technologies for SARS-COV-2

The Spanish Higher Council for Scientific Research (CSIC) will finance the project Point-of-care tests for the rapid detection of SARS-CoV-2 (POC4CoV), whose objective is to have effective diagnostic technologies for Covid-19. The Institute of Microelectronics of Barcelona (IMB-CNM-CSIC), the Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) and the Institute of Materials Science of Aragon (ICMA) participate in it. The POC4CoV project aims to develop Point-of-Care (POC) devices for the in vitro diagnosis of SARS-COV-2 infection quickly and reliably, thanks to the use of multiplexed systems and the use of particular biomolecular probes. To do this, POC technological platforms will b[...]

07 Feb

Ethylcellulose nanoparticles as new “in vitro” tool for cell transfection

Researchers of NANBIOSIS U12 Nanostructured liquid characterization unit and U29 Oligonucleotide Synthesis Platform (OSP) of CIBER-BBN at IQAC-CSIC have obtained successfully ethylcellulose nanoparticles with positive zeta potential formed from nano-emulsion complexation with an antisense oligonucleotide which result very promising complexes for “in vitro” cell transfection. A new non-viral gene delivery vector has been developed, based on ethylcellulose, an easily available and low cost carbohydrate polymer, “generally recognized as safe” by the FDA. Although ethylcellulose is nonionic, positively charged nanoparticle dispersions have been obtained using nano-emulsion templates in cationic:non-ionic surfactant-based systems. The nanoparticles have been successfully complexed with negatively charged phosphorothioate antisens[...]

26 Apr

Nanbiosis_U10_Cationic nioplexes in supramolecular hydrogels as hybrid materials to deliver nucleic acids
Cationic nioplexes in supramolecular hydrogels as hybrid materials to deliver nucleic acids

Jose Luis Pedraz, Scientific Director of Unit 10 of NANBIOSIS Drug Formulation unit and Ramon Eritja Scientific Director of Unit U29 of NANBIOSIS Oligonucleotide Synthesis Platform (OSP) (CIBER-BBN) have participated in the entrapment of cationic nioplexes in supramolecular hydrogels and the use of these materials for transfecting cells. This work is focused on entrapping cationic nioplexes within supramolecular hydrogels based on N-protected phenylalanine. To modulate the supramolecular hydrogel diffusion properties, hydrogels were easily tuned with ĸ-carrageenan (≤ 1%). These materials were fully characterized using rheology. The niosomal liberation in solution through hydrogels was monitored by fluorescence and this release was[...]