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Hepatology International

Erschienen in:

01.03.2013 | Original Article

Short hairpin RNAs with a 2- or 3-base mismatch inhibit HBV expression and replication in HepG2 cells

verfasst von: Xiaoguang Li, Yuan Hong, Qi Wang, Shunai Liu, Hongshan Wei, Jun Cheng

Erschienen in: Hepatology International | Ausgabe 1/2013

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Abstract

Purpose

To assess the functions of mismatched short hairpin RNAs (shRNAs) that inhibit replication and the expression of hepatitis B virus (HBV), two shRNAs possessing a 2- or 3-base mismatch that targeted HBV were studied.

Methods

shRNAs and pHY106-HBV were cotransfected into HepG2 cells. The culture supernatants were collected and used in hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) assays. The levels of HBsAg and HBcAg mRNA were detected by reverse-transcriptase PCR (RT-PCR). HBV DNA replication intermediates were extracted for Southern blot hybridization.

Results

The results demonstrate that mismatched shRNA-458 and shRNA-635 can significantly inhibit HBsAg and HBeAg protein expression, and the maximal inhibition ratio for both proteins was found at 72 h after cotransfection: 80 and 50 %, respectively. Similar inhibitory effects were found on HBsAg and HBcAg mRNA levels and HBV DNA replication intermediates at 72 h after cotransfection, and the inhibition ratio was found to be approximately 70 and 90 %, respectively.

Conclusions

Despite the 2- or 3-base mismatch between the shRNAs and the HBV target sequences, shRNA-458 and shRNA-635 exerted a significant inhibitory effect on HBsAg and HBeAg expression and HBV replication. This indicates that mismatched shRNAs could be a promising therapy for HBV.

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Titel: Short hairpin RNAs with a 2- or 3-base mismatch inhibit HBV expression and replication in HepG2 cells
verfasst von: Xiaoguang Li
Yuan Hong
Qi Wang
Shunai Liu
Hongshan Wei
Jun Cheng
Publikationsdatum: 01.03.2013
Verlag: Springer-Verlag
Erschienen in: Hepatology International / Ausgabe 1/2013
Print ISSN: 1936-0533
Elektronische ISSN: 1936-0541
DOI: https://doi.org/10.1007/s12072-012-9377-0

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Short hairpin RNAs with a 2- or 3-base mismatch inhibit HBV expression and replication in HepG2 cells

Abstract

Purpose

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Results

Conclusions

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Methods

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