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2020 Fiscal Year Final Research Report

Identification of long non-coding RNAs that regulate HBV replication

Research Project

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Project/Area Number 18K07161
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49060:Virology-related
Research InstitutionFujita Health University (2020)
National Center for Global Health and Medicine (2018-2019)

Principal Investigator

Nishitsuji Hironori  藤田医科大学, 医学部, 講師 (20573661)

Project Period (FY) 2018-04-01 – 2021-03-31
KeywordsHBV / lncRNA
Outline of Final Research Achievements

In this study, I investigated the roles of long non-coding RNA in HBV replication. HepG2 cells were expressed with HA- and myc-tagged HBV X protein. Cell lysates were immunoprecipitated with anti-HA and anti-myc antibodies. Immunocomplex were subjected to next generation sequence to identify lncRNAs bound to HBV X protein. I found that miRNA acts as suppressor of HBV replication through degradation of HBV X protein.

Free Research Field

ウイルス

Academic Significance and Societal Importance of the Research Achievements

今回、Xタンパク質と結合するmiRNAを同定した。この同定したmiRNAはHBV Xタンパク質と結合し、Xタンパク質の機能を阻害した。さらにこのmiRNAはHBV感染も阻害した。このmiRNAはXタンパク質と結合することにより、Xタンパク質を不安定化した。Xタンパク質は、HBVの転写を制御していることから、このmiRNAがHBVの潜伏化に関与している可能が示唆される。また、このmiRNAを人工的に制御できれば、HBV阻害薬のターゲットととして期待される。

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Published: 2022-01-27  

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