Publicaciones científicas

A pan-tumor-siRNA aptamer chimera to block nonsense-mediated mRNA decay inflames and suppresses tumor progression

20-jul-2020 | Revista: Molecular Therapy Nucleic Acids

Daniel Meraviglia-Crivelli 1 2, Helena Villanueva 1 2, Ashwathi Puravankara Menon 1 2, Angelina Zheleva 1 2, Beatriz Moreno 1, María Villalba-Esparza 1 2 3, Fernando Pastor 1 2


Immune-checkpoint blockade (ICB) therapy has changed the clinical outcome of many types of aggressive tumors, but there still remain many cancer patients that do not respond to these treatments. There is an unmet need to develop a feasible clinical therapeutic platform to increase the rate of response to ICB. Here we use a previously described clinically tested aptamer (AS1411) conjugated with SMG1 RNAi (AS1411-SMG1 aptamer-linked siRNA chimeras [AsiCs]) to inhibit the nonsense-mediated RNA decay pathway inducing tumor inflammation and improving response to ICB. The aptamer AS1411 shows binding to numerous mouse and human tumor cell lines tested. AS1411 induces tumor cytotoxicity in long incubation times, which allows for the use of the aptamer as a carrier to target the RNAi inhibition to the tumor. The AS1411-SMG1 AsiCs induce a strong antitumor response in local and systemic treatment in different types of tumors. Finally, AS1411-SMG1 AsiCs are well tolerated with no detected side effects.

CITA DEL ARTÍCULO Mol Ther Nucleic Acids. 2022 Jul 20:29:413-425. doi: 10.1016/j.omtn.2022.07.017. eCollection 2022 Sep 13.

Nuestros autores

Daniel Hackbrett Meraviglia-Crivelli de Caso
Helena Villanueva Ruiz
Técnico de Investigación Plataforma de Aptámeros y Química Médica
Ashwathi Puravankara Menon
Dra. Angelina Zheleva
Investigadora del Programa de Terapias Moleculares del Cima Universidad de Navarra
Dra. Beatriz Moreno Bruna
Investigadora Adscrito a Proyecto Plataforma de Aptámeros y Química Médica