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2023 Fiscal Year Final Research Report

Studies on function of an snRNA U2 fragment and evaluation as a prognostic marker for lung cancer

Research Project

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Project/Area Number 20K07791
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionKyorin University

Principal Investigator

AISO Toshiko  杏林大学, 保健学部, 教授 (40195144)

Co-Investigator(Kenkyū-buntansha) 大西 宏明  杏林大学, 医学部, 教授 (80291326)
Project Period (FY) 2020-04-01 – 2024-03-31
KeywordsマイクロRNA / 肺癌マーカー / snRNA / コピー数多型
Outline of Final Research Achievements

1.It was shown that a 5'-isoform, but not the canonical sequence (miRbase type), is the most abundant sequence of circulating miR-1246 (a fragment of snRNA U2), a candidate biomarker of lung cancer.
2.miR-1246 gene (snRNA U2 gene) is arranged in tandem repeats and the repeat number is highly variable from persons. No correlation between the repeat number and serum miR-1246 level was observed. These results show that the serum miR-1246 levels were not affected by the repeat number.

Free Research Field

分子生物学

Academic Significance and Societal Importance of the Research Achievements

①血液中のマイクロRNA miR-1246(snRNA U2断片)の詳細な構造を示したことにより、miR-1246レベルを正確に測定するための情報が得られた。miR-1246の調節因子としての機能については、これまで考えられていた標的とは異なる遺伝子群が標的である可能性を示した。
②miR-1246の遺伝子(snRNA U2遺伝子)のコピー数に個人差があるが(コピー数多型)、この違いが血液中のmiR-1246のレベルに影響を及ぼす可能性は低いことを示しマーカーとしての一条件を満たすことが確認できた。

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Published: 2025-01-30  

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