World journal of hepatology · 2025
Hepatitis B virus confers innate immunity evasion through hepatitis B virus-miR-3 down-regulation of cGAS-Sting-IFN signaling.
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Xu Zhen-Yu, Gao Jia-Shi, He Ying, Xiao Xin-Qiang, Gong Guo-Zhong, Zhang Min
Аннотация
BACKGROUND: Hepatitis B virus (HBV) evades the innate immunity and leads to persistent chronic infection, but the molecular mechanism is still not well known.
AIM: To investigate whether HBV-miR-3 is involved in HBV immune evasion.
METHODS: HBV-miR-3 agomir and antagomir were employed to verify the effectiveness of HBV-miR-3 on cGAS-Sting-IFN pathway through the experiments on relative luciferase activity, cGAS protein expression, Sting phosphorylation and interferon (IFN) production.
RESULTS: HBV-miR-3 down-regulates cGAS protein expression post-transcriptionally by inhibition of cGAS 3'-untranslated region (3'-UTR) activity, which results in lower Sting phosphorylation and IFN production. HBV-miR-3 antagomir rescued cGAS protein expression, Sting phosphorylation and IFN-β production.
CONCLUSION: HBV-miR-3 plays an important role in HBV immunity evasion by targeting cGAS 3'-UTR and interfering with cGAS-Sting-IFN pathway.
AIM: To investigate whether HBV-miR-3 is involved in HBV immune evasion.
METHODS: HBV-miR-3 agomir and antagomir were employed to verify the effectiveness of HBV-miR-3 on cGAS-Sting-IFN pathway through the experiments on relative luciferase activity, cGAS protein expression, Sting phosphorylation and interferon (IFN) production.
RESULTS: HBV-miR-3 down-regulates cGAS protein expression post-transcriptionally by inhibition of cGAS 3'-untranslated region (3'-UTR) activity, which results in lower Sting phosphorylation and IFN production. HBV-miR-3 antagomir rescued cGAS protein expression, Sting phosphorylation and IFN-β production.
CONCLUSION: HBV-miR-3 plays an important role in HBV immunity evasion by targeting cGAS 3'-UTR and interfering with cGAS-Sting-IFN pathway.