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2021 Fiscal Year Final Research Report

Screening of HIV-1 regulatory factors toward HIV-1 cure

Research Project

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Project/Area Number 19K23860
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0803:Pathology, infection/immunology, and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Sukegawa Sayaka  東京医科歯科大学, 大学院医歯学総合研究科, 助教 (40844379)

Project Period (FY) 2020-02-01 – 2022-03-31
KeywordsHIV-1 / 宿主因子 / 感染制御 / エイズ
Outline of Final Research Achievements

The purpose of this research is to identify new HIV-1 regulatory host factor(s) toward HIV-1 cure.
To achieve this purpose, we performed microarray analysis to compare the gene expression level of three different CD4+ T lymphocytes, which show the different HIV-1 sensitivity. Based on the result of both microarray and HIV-1 infectivity in those three different T lymphocytes, we focused on 29 genes. Next, we established knock down cells using 2-3 different targeting shRNA for each target gene and evaluated HIV-1 infectivity. As a result, we found the correlation of endogenous mRNA levels and HIV-1 infectivity in knock down cells targeting host factors A and B. Furthermore, to verify the effect of A and B on HIV-1 restriction, we are attempting reconstitution analysis.

Free Research Field

ウイルス学

Academic Significance and Societal Importance of the Research Achievements

近年、国内外を問わずHIV-1感染増殖伝播を制御する宿主因子の探索同定が多数おこなわれ
ており、HIV-1感染制御機構の理解は深まりつつある。しかしながら、未だ不明な点が多く残されており、HIV治癒戦略において大きな障壁となっている。
本研究の様に、HIV-1感染標的Tリンパ球細胞の感染感受性差異に着目した細胞内因子動態の解析では、HIV-1感染必須および感染抑制の両側面から多面的にHIV-1制御因子を同定することが可能であると考えられる。本研究において同定された新規宿主因子は、HIV-1感染制御機構の理解を深めるだけでなく、新たなHIV-1治癒戦略への貢献につながるものと考えられる。

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Published: 2023-01-30  

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