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2022 Fiscal Year Final Research Report

The functional analysis of leukemia disease and the construction of this disease model using APOBEC3/AID double knockout mices

Research Project

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Project/Area Number 19K17844
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionKindai University

Principal Investigator

Tsukimoto Shota  近畿大学, 大学病院, 助教 (40790762)

Project Period (FY) 2019-04-01 – 2023-03-31
KeywordsAPOBEC3 / 胚中心B細胞 / FLAGノックインマウス / 造血幹細胞 / 骨髄球系前駆細胞 / リンパ球系前駆細胞 / 胸腺
Outline of Final Research Achievements

Flow cytometry and immunohistological staining showed that APOBEC3 is very poorly expressed on T cells and strongly expressed on germinal center B cells, and that APOBEC3 is present outside the nucleus. In the thymus, APOBEC3 protein is expressed relatively early in the differentiation of lymphoid progenitors in the thymus, indicating that APOBEC3 protein is differentially expressed in cytotoxic T cells and helper T cells during differentiation from HSCs. APOBEC3 expression was not observed in the early stages of differentiation from hematopoietic stem cells, such as in the bone marrow.

Free Research Field

免疫学 麻酔科学

Academic Significance and Societal Importance of the Research Achievements

APOBEC3をノックアウトしたマウスにおいて、Bリンパ腫が自然発症する現象が認められたことが本研究のスタートであった。この研究成果は、APOBEC3の動きを生理学的・組織学的に可視化できるマウスが出来上がったことが大きな成果である。
今後は、このマウスを使ってAPOBEC3とレトロウイルス感染の関連、そしてAPOBEC3ノックアウトマウスでのBリンパ腫発症の機序を説明することができるツールの一つとなる可能性がある。

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Published: 2024-01-30  

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