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Molecular mechanisms of negative feedback regulation of hypothalamo-pituitary-adrenal axis

Research Project

Project/Area Number 19K09007
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionSuzuka University of Medical Science (2020-2023)
Kochi University (2019)

Principal Investigator

Iwasaki Yasumasa  鈴鹿医療科学大学, 保健衛生学部, 教授 (30303613)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsプロオピオメラノコルチン / ストレス / ネガティブフィードバック / グルココルチコイド / 下垂体 / GDF15
Outline of Research at the Start

視床下部・下垂体・副腎系におけるネガティブフィードバック調節の分子機序解明に焦点を当てた今回の研究では、グルココルチコイド受容体 (GR) と相互作用する可能性の高い4つのシグナル伝達因子、すなわち Rasd1(Dexras1)、HDAC6、FKBP5、FKBP4、ならびに ACBD7 を対象とした検討を行う。特に前4者がグルココルチコイドで誘導され POMC(またはCRH)遺伝子発現の抑制性調節に関与しているか否か、また ACBD7 がレプチン存在下で発現が誘導され、弓状核 POMC 遺伝子の発現誘導に関与しているか否かを、主として in vitro の系を用いて解析する。

Outline of Final Research Achievements

We investigated the molecular mechanisms underlying the negative feedback regulation of the hypothalamo-pituitary-adrenal (HPA) axis using hypothalamic and pituitary cells in vitro. We found that FKBP4 and 5, as well as HDAC6 regulate binding affinity between glucocorticoid hormone receptor and its chaperone molecule (HSP90), whereas GDF15 is induced by glucocorticoid and involved in both CRH and POMC gene transcription. These bioactive molecules may be future targets for the development of anti-stress medicine.

Academic Significance and Societal Importance of the Research Achievements

視床下部・下垂体・副腎軸によるストレスホルモン分泌制御機構の解明は、ストレス過多の社会における重要な研究領域である。今回の研究で対象となった生理活性物質は、今後の抗ストレス薬の治療標的となる可能性があり、創薬への応用が期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020 2018

All Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 5 results)

  • [Journal Article] Growth differentiation factor-15 stimulates the synthesis of corticotropin-releasing factor in hypothalamic 4B cells2023

    • Author(s)
      Tasso Mizuki、Kageyama Kazunori、Iwasaki Yasumasa、Watanuki Yutaka、Niioka Kanako、Takayasu Shinobu、Daimon Makoto
    • Journal Title

      Peptides

      Volume: 170 Pages: 171112-171112

    • DOI

      10.1016/j.peptides.2023.171112

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth differentiation factor-15 modulates adrenocorticotropic hormone synthesis in murine AtT-20 corticotroph cells2022

    • Author(s)
      Kageyama K, Iwasaki Y, et al.
    • Journal Title

      Peptides

      Volume: 155 Pages: 170841-170841

    • DOI

      10.1016/j.peptides.2022.170841

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of tubastatin A on adrenocorticotropic hormone synthesis and proliferation of AtT-20 corticotroph tumor cells2022

    • Author(s)
      Hagiwara R, Kageyama K, Iwasaki Y, Niioka K, Daimon M.
    • Journal Title

      Endocrine Journal

      Volume: 69 Issue: 9 Pages: 1053-1060

    • DOI

      10.1507/endocrj.EJ21-0778

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hypothalamic Regulation of Corticotropin-Releasing Factor under Stress and Stress Resilience.2021

    • Author(s)
      Kageyama K, Iwasaki Y, Daimon M.
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 22 Pages: 12242-12255

    • DOI

      10.3390/ijms222212242

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Unilateral adrenalectomy partially improved hyperglycemia in a patient with primary bilateral macronodular adrenal hyperplasia.2021

    • Author(s)
      Nishiyama M, Karashima T, Iwasaki Y, Terada Y, Fujimoto S
    • Journal Title

      Diabetology International

      Volume: 12 Issue: 4 Pages: 480-484

    • DOI

      10.1007/s13340-021-00503-8

    • NAID

      40022680907

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transcription factor Creb3l1 regulates the synthesis of prohormone convertase enzyme PC1/3 in endocrine cells.2020

    • Author(s)
      Paterson A, Rahman PA, Gillard BT, Langley S, Iwasaki Y, Murphy D, Greenwood MP.
    • Journal Title

      Journal of Neuroendocrinology

      Volume: 32 Issue: 4

    • DOI

      10.1111/jne.12851

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Triiodothyronine activates glycerol-3-phospate acyltransferase 3 via AGGTCA-like direct-repeat-4 type thyroid hormone response element.2020

    • Author(s)
      Zhao LF, Iwasaki Y. et al.
    • Journal Title

      Acta Endocrinologica

      Volume: 16 Issue: 2 Pages: 129-135

    • DOI

      10.4183/aeb.2020.129

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Genome-wide analysis of glucocorticoid-responsive transcripts in the hypothalamic paraventricular region of male rats2018

    • Author(s)
      Keiichi Itoi, Ikuko Motoike, Ying Liu, Sam Clokie, Yasumasa Iwasaki, Katsuya Uchida, Tatsuya Sato, and Greti Aguilera
    • Journal Title

      Endocrinology

      Volume: 25 Issue: 1 Pages: 38-54

    • DOI

      10.1210/en.2018-00535

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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