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2019-01-02

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cc BY-NC-ND (c) Rovira i Rigau, Maria et al., 2019
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/171629

Bioselection Reveals miR-99b and miR-485 as Enhancers of Adenoviral Oncolysis in Pancreatic Cancer

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https://doi.org/10.1016/j.ymthe.2018.09.016

Resum

Oncolytic viruses are designed for cancer treatment. Cell-virus interactions are key determinants for successful viral replication. Therefore, the extensive reprogramming of gene expression that occurs in tumor cells might create a hurdle for viral propagation. We used a replication-based approach of a microRNA (miRNA) adenoviral library encoding up to 243 human miRNAs as a bioselection strategy to identify miRNAs that facilitate adenoviral oncolytic activity in pancreatic ductal adenocarcinoma. We identify two miRNAs, miR-99b and miR-85, that function as enhancers of adenoviral oncolysis by improving the intra-and extracellular yield of mature virions. An increased adenoviral activity is the consequence of enhanced E1A and late viral protein expression, which is probably mediated by the downregulation of the transcriptional repressors ELF4, MDM2, and KLF8, which we identify as miR-99b or miR-485 target genes. Arming the oncolytic adenovirus ICOVIR15 with miR-99b or miR-485 enhances its fitness and its antitumoral activity. Our results demonstrate the potential of this strategy to improve oncolytic adenovirus potency, and they highlight miR-99b and miR-485 as sensitizers of adenoviral replication.

Matèries

Càncer de pàncrees, Adenovirus

Matèries (anglès)

Pancreas cancer, Adenoviruses

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Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

Citació

ROVIRA I RIGAU, Maria, RAIMONDI, Giulia, MARÍN, Miguel ángel, GIRONELLA, Meritxell, ALEMANY BONASTRE, Ramon, FILLAT I FONTS, Cristina. Bioselection Reveals miR-99b and miR-485 as Enhancers of Adenoviral Oncolysis in Pancreatic Cancer. _Molecular Therapy_. 2019-01-02. Vol. 27, núm. Issue 1, pàgs. 230-243. [consulta: 25 de febrer de 2026]. [Disponible a: https://hdl.handle.net/2445/171629]

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