2022 Fiscal Year Final Research Report
Elucidation of the mechanisms of differential gene expression in the male and female mice on the sexual differentiation of the cerebral cortex
Project/Area Number |
21K15097
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 44020:Developmental biology-related
|
Research Institution | Tohoku University |
Principal Investigator |
Ochi Shohei 東北大学, 医学系研究科, 助教 (30884217)
|
Project Period (FY) |
2021-04-01 – 2023-03-31
|
Keywords | 性差 / 性分化 / 大脳皮質 / 神経分化 / 組織構築 / Pax6 / RNA-seq / マウス |
Outline of Final Research Achievements |
Sex differences are known to exist in mammalian brains. Sexual differentiation of the brain has been thought to primarily progress after birth, largely due to sex hormones released perinatally. However, we found that sex differences in gene expression and tissue architecture appeared in the embryonic mouse telencephalon. While sex hormones have conventionally been believed to play a crucial role in brain sexual differentiation, our findings suggest that sex differences may be established as a genetic program even during the embryonic period, when sex hormones are less dependent.
|
Free Research Field |
神経発生学
|
Academic Significance and Societal Importance of the Research Achievements |
脳の性差は、出産前後以降の性ホルモンによって決定されると考えられてきた。しかし、本研究における解析から、胎生期の大脳皮質において既に遺伝子発現や組織構築に関して性差が現れる可能性を成果として見出した。自閉スペクトラム症を含む神経発達障害は、発症頻度や病態に性差が存在することが知られているが、本研究にて示唆された遺伝子発現プログラムの性差が病態の原因となる可能性が考えられる。本研究は、学術的に神経発達障害を脳の性差研究という新たな切り口から焦点を当てた研究である。
|