Targeted delivery of hepatitis C virus-specific short hairpin RNA in mouse liver using Sendai virosomes

Subramanian, Nithya and Mani, Prashant and Roy, Swagata and Gnanasundram, Sivakumar Vadivel and Sarkar, Debi Prasad and Das, Saumitra (2009) Targeted delivery of hepatitis C virus-specific short hairpin RNA in mouse liver using Sendai virosomes. In: Journal of General Virology, 90 (Part 8). pp. 1812-1819.

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Abstract

Internal ribosome entry site (IRES)-mediated translation of input viral RNA is the initial required step for the replication of the positive-stranded genome of hepatitis C virus (HCV). We have shown previously the importance of the GCAC sequence near the initiator AUG within the stem and loop IV (SLIV) region in mediating ribosome assembly on HCV RNA. Here, we demonstrate selective inhibition of HCV-IRES-mediated translation using short hairpin (sh)RNA targeting the same site within the HCV IRES. sh-SLIV showed significant inhibition of viral RNA replication in a human hepatocellular carcinoma (Huh7) cell line harbouring a HCV monocistronic replicon. More importantly, co-transfection of infectious HCV-H77s RNA and sh-SLIV in Huh7.5 cells successfully demonstrated a significant decrease in viral RNA in HCV cell culture. Additionally, we report, for the first time, the targeted delivery of sh-SLIV RNA into mice liver using Sendai virosomes and demonstrate selective inhibition of HCV-IRES-mediated translation. Results provide the proof of concept that Sendai virosomes could be used for the efficient delivery of shRNAs into liver tissue to block HCV replication.

Item Type:	Journal Article
Publication:	Journal of General Virology
Publisher:	Society for General Microbiology
Additional Information:	Copyright of this article belongs to Society for General Microbiology.
Department/Centre:	Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited:	22 Dec 2009 09:02
Last Modified:	19 Sep 2010 05:42
URI:	http://eprints.iisc.ac.in/id/eprint/22449

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