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2020 Fiscal Year Final Research Report

Analysis of immune responses in patients with chronic hepatitis C after viral clearance

Research Project

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Project/Area Number 19K17509
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionNational Center for Global Health and Medicine

Principal Investigator

Sachiyo Yoshio  国立研究開発法人国立国際医療研究センター, その他部局等, 肝疾患先端治療研究室長 (10774060)

Project Period (FY) 2019-04-01 – 2021-03-31
KeywordsC型慢性肝炎 / 肝がん / ナチュラルキラー細胞 / 樹状細胞
Outline of Final Research Achievements

We analyzed the changes of natural killer(NK) cells and dendritic cells (DCs) after clearance of hepatitis C virus (HCV) with DAA treatment. In patients with chronic hepatitis C infection, compared with healthy volunteers in the same age range, NK cells and DCs are dysregulated. After HCV clearance, NK cells and DCs were not recovered. Therefore, annual screening for HCC is indispensable after HCV clearance.

Free Research Field

肝臓内科

Academic Significance and Societal Importance of the Research Achievements

以上の研究により、加齢によるNK細胞・樹状細胞の変化を明らかにすることができた。またDAA治療によるHCV排除が樹状細胞(DC)―NK細胞の抗腫瘍免疫応答を完全には回復しないことが分かった。これらの結果は平均年齢の高いC型慢性肝炎患者におけるウイルス排除後の肝発がんスクリーニングの重要性を裏付けるものである。

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Published: 2022-01-27  

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