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2021 Fiscal Year Final Research Report

The functional role of FGF signal in the interaction between hypothalamus and pituitary

Research Project

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Project/Area Number 18K16232
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionKyoto University (2019-2021)
Kobe University (2018)

Principal Investigator

MATSUMOTO Ryusaku  京都大学, iPS細胞研究所, 特別研究員(PD) (20801088)

Project Period (FY) 2018-04-01 – 2022-03-31
Keywords下垂体 / 視床下部 / 線維芽細胞増殖因子 (FGF) / 口腔外胚葉 / iPS細胞
Outline of Final Research Achievements

We have investigated the role of hypothalamic FGF signals in pituitary development using iPSC-based hypothalamus-pituitary organoid. Knockout of FGF in iPSCs demonstrated that FGF8 was important for survival of oral ectoderm cells and FGF10 regulated LHX3+ pituitary progenitor cell differentiation. Treatment of FGFR inhibitor experiments showed that hypothalamic FGF signals have essential role in maintenance of oral ectoderm cells but no significant effect on pituitary hormone-producing cell differentiation. Interestingly, in later stage of differentiation, FGF signals are important for functional maturation of pituitary hormone-producing cells.

Free Research Field

内分泌学

Academic Significance and Societal Importance of the Research Achievements

本研究では、ヒトiPS細胞の分化誘導系を用いることで、これまで解析が困難であったヒトの下垂体発生をin vitroで再現し経時的に解析可能であることを示した。それによって、視床下部に発現するFGFシグナルが下垂体発生にどのように関わっており、それが実際に下垂体疾患の発症に関わっていることを示すことができた。本モデルはヒトの下垂体発生・疾患モデルとして非常に有用であり、今後更なるヒト発生学の知見を生み出すとともに、ヒト下垂体疾患における病態の解明や治療法の開発に資するものとして大いに期待される。

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Published: 2023-01-30  

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