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Updated: Nov 9, 2025

Development of a Hepatitis B Virus Reporter System to Monitor the Early Stages of the Replication Cycle
Published on: February 1, 2017
Role of STAT1 in the resistance of HBV to IFN-α
Bingfa Xu1, Bo Tang2, Jiajia Wei3
1Department of Pharmacy, The Third Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230061, P.R. China.
Abstract:
The objective of the present study was to explore the mechanism of hepatitis B virus (HBV) resistance to interferon (IFN), and the role of signal transducer and activator of transcription 1 (STAT1). HepG2.2.15 cells were stimulated with a long-term (6-24 weeks) low-dose interferon (IFN)α-2b (10-70 IU/ml), so as to construct and screen a HepG2.2.15 cell model resistant to IFNα-2b. The changes of STAT1 and other proteins in the JAK-STAT signaling pathway, before and after drug resistance, were compared. The phosphorylation of STAT1 in HepG2.2.15 cells resistant to IFNα-2b was significantly decreased, and the expression level of 2',5'-oligoadenylate synthetase 1 was downregulated. Decreased phosphorylation of STAT1 in the JAK-STAT signaling pathway a contributor to the development of resistance to IFN-α in HBV.
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