KNK437抑制乙型肝炎病毒復制及轉錄
[Abstract]:During the replication of hepatitis B virus (Hepatitis B virus,HBV) in hepatocytes, the retrovirus reverse transcriptase (P protein) formed P- 蔚 complex with the RNA packaging signal 蔚 on the pregenomic RNA (Pregenomic RNA,pgRNA. Initiating reverse transcription synthesis and core-capping assembly. Closed P- 蔚 interaction is an attractive anti-HBV strategy. It is known that heat shock protein (Heat-shock proteins,Hsps) is involved in P- 蔚 forming RNP complex. The aim of this study was to investigate the effects of Hsps inhibitor KNK437 on HBV replication and transcription. Three working models were used: HepG2.2.15 cell line, Huh7 cell line with 1. 05 脳 HBV (pCH9-3091) plasmid and Huh7 cell line with 1. 3 脳 HBV (pGEM-1.3 脳 HBV) plasmid. The cytotoxicity of KNK437 was detected by CCK-8, the levels of HBsAg and HBeAg in the supernatant of cell culture medium were measured by ELISA, DNA and HBV RNA in the core-shell of HBV were detected by q-PCR and qRT-PCR, respectively. Western blotting was used to detect the expression of (core) and qRT-PCR was used to detect the transcriptional level of Hsps itself. The results showed that 20 渭 M KNK437 was not toxic to cells, and at this concentration, KNK437 could down-regulate the extracellular secretion of HBV HBsAg and HBeAg, inhibit the synthesis of DNA in HBV nucleocapsid and decrease the level of HBV RNA transcription. The lowest level of KNK437 can reduce the DNA level to about 1.5% and the RNA level to about 30%, which indicates that KNK437 inhibits HBV replication and transcription. Western blotting in HepG2.2.15 showed that KNK437 significantly reduced the (core) expression level of cell underwear shell subunit. KNK437 also inhibited the transcription of three heat shock proteins (Hsp70,Hsp90b,Hsp40) RNA, which proved that it was indeed a pan-Hsps inhibitor. The results of this study indicate that KNK437 has a potential application prospect of anti-HBV.
【作者單位】: 湖北工業(yè)大學生物醫(yī)藥研究院中德生物醫(yī)學中心;中國科學院武漢病毒研究所病毒學國家重點實驗室;
【基金】:湖北省自然科學基金重點項目(項目號:2014CFA075);題目:RNA誘餌分子抗HBV功效的體內(nèi)研究 武漢市科技局應用基礎研究計劃(項目號:2015060101010033);題目:肝癌早期診斷與靶向藥物設計
【分類號】:R373.21
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