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Functions of hDiminuto in adrenocortical cells

Research Project

Project/Area Number 15590976
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Endocrinology
Research InstitutionNagoya University

Principal Investigator

OHMORI Sachiko  Nagoya Univ., Res.Inst.Environ.Med., Research Associate, 環境医学研究所, 助手 (20233273)

Co-Investigator(Kenkyū-buntansha) SEO Hisao  Nagoya Univ., Res.Inst.Environ.Med., Professor, 環境医学研究所, 教授 (40135380)
KAMBE Fukushi  Nagoya Univ., Res.Inst.Environ.Med., Associate Professor, 環境医学研究所, 助教授 (00211871)
IMAI Tsuneo  Nagoya Univ., Hosp., Lecturer, 医学部, 講師 (80252245)
服部 公彦  名古屋大学, 環境医学研究所, 助手 (90359745)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2003: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordshDiminuto / DHCR24 / Adrenalcortical cell / Dexamethasone / ACTH / p27kip1 / p57kip2 / PCNA / Dexamethasone / 副腎皮質刺激ホルモン(ACTH) / 副腎皮質 / p27^<kip1>
Research Abstract

We reported the reduced expression of hDiminuto/DHCR24 gene in the adrenocortical cells adjacent to the cortisol-producing adenoma, and that this was associated with the increased apoptosis of the cells. These results indicated that hDiminuto controls proliferation of adrenocortical cells by inhibiting apoptosis. On the other hand, it was reported that ACTH induces cydin-dependent kinase inhibitors, p27kip1 and p57kip2, and suppresses proliferation of adrenocortical cells. In this study, we investigated the effects of ACTH on expression of p27kip1, p57kip2, proliferating cell nuclear antigen (PCNA) and hDiminuto in the adrenal glands of rats treated with dexamethasone (Dex).
[Material and Methods] Mail Wistar rats were treated for 5 days with Dex to inhibit endogenous ACTH secretion. ACTH was then administered to the rats, and they were killed at 0, 12, 24, 48 and 72 hours after ACTH. The adrenals were examined by Western blot, Northern blot and immunohistochemical analysis.
[Results] De … More x treatment induced shrinkage of adrenals, where no PCNA-expressing cells were detected, but most of cells expressed p27Kip1. Subsequent ACTH treatment resulted in the marked suppression of p27Kip1 expression specifically in adrenocortical cells at 12 hours. At 48 hours, the p27Kip1 suppression still continued in the cortex, while the PCNA-expressing cells appeared mainly around zona glomerulosa (zG), and increased at 72 hours. At this time, the p27Kip1-expressing cells also appeared in zG. In contrast to p27Kip1, the expression of p57Kip2 was not detected in the Dex-treated adrenal. However, its expression was markedly induced by ACTH in zG at 48 and 72 hours. The hDiminuto expression in the cortex was decreased by Dex, and its expression was increased by ACTH.
[Conclusion] The results demonstrate that the primary site for mitogenic action of ACTH in rat adrenocortex is zG, and that ACTH modulates proliferation and differentiation of adrenocortical cells by regulating the expression of p27Kip1, p57Kip2 and hDiminuto in time- and site-specific manners. Less

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (14 results)

All 2006 2005 2004 2003 Other

All Journal Article (12 results) Publications (2 results)

  • [Journal Article] DHCR24-knockout embryonic fibroblasts are susceptible to serum withdrawal-induced apoptosis because of dysfunction of caveolae and insulin-Akt-Bad signaling.2006

    • Author(s)
      LU X, KAMBE F, CAO X, OHMORI S, 他6名
    • Journal Title

      Endocrinology (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Differential expression of cyclin-dependent kinase inhibitors,p27Kipl and p27Kip2,by corticotropin in rat adrenal cortex.2006

    • Author(s)
      KOBAYASHI H, KAMBE F, OHMORI S, 他5名
    • Journal Title

      Journal of Endocrinology (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] DHCR24 gene knockout mice demonstrate lethal dermopaty with differentiation and maturation defects in the epidermis.2006

    • Author(s)
      MIRZA R, KAMBE F, OHMORI S, 他8名
    • Journal Title

      Journal of Investigative dermatology 126

      Pages: 638-647

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] DHCR24-knockout embryonic fibroblasts are susceptible to serum withdrawal-induced apoptosis because of dysfunction of caveolae and insullin-Akt-Bad signaling.2006

    • Author(s)
      Lu X, KAMBE F, CAO X, YOSHIDA T, OHMORI S, MURAKAMI K, KAJI T, ISHII T, ZADWORNY D, SEO H
    • Journal Title

      Endocrinology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Differential expression of cyclin-dependent kinase inhibitors, p27Kip1 and p57Kip2, by corticotropin in rat adrenal cortex.2006

    • Author(s)
      KOBAYASHI H, KAMBE F, IMAI T, HIBI Y, KIKUMORI T, OHMORI S, NAKAO A, SEO H
    • Journal Title

      Journal of Endocrinology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] DHCR24 gene knockout mice demonstrate lethal dermopaty with differentiation and maturation defects in the epidermis.2006

    • Author(s)
      MIRZA R, HAYAKAWA S, TAKAGISHI Y, KAMBE F, OHMORI S, MAKI K, YAMAMOTO M, MURAKAMI K, KAJI T, ZADWORNY D, MURATA Y, SEO H
    • Journal Title

      Journal of Investigative dermatology 126

      Pages: 638-647

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Differential expression of cyclin-dependent kinase inhibitors, p27Kip1 and p57Kip2, by corticotropin in rat adrenal cortex.2006

    • Author(s)
      KOBAYASHI H, KAMBE F, OHMORI S, 他5名
    • Journal Title

      Journal of Endocrinology (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Glutathionylation of two cysteine residues in paired domain regulates DNA binding activity of Pax-8.2005

    • Author(s)
      CAO X, KAMBE F, OHMORI S, 他3名
    • Journal Title

      Journal of Biological Chemistry 280(27)

      Pages: 25901-25906

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Glutathionylation of two cysteine residues in paired domain regulates DNA binding activity of Pax-8.2005

    • Author(s)
      CAO X, KAMBE F, LU X, KOBAYASHI N, OHMORI S, SEO H
    • Journal Title

      Journal of Biological Chemistry 280(27)

      Pages: 25901-25906

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 自発走行運動が成長期・雄ラットの体重、骨量におよぼす効果2004

    • Author(s)
      末田香里, 大西伸子, 大森幸子
    • Journal Title

      栄養学雑誌 62

      Pages: 339-346

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Tail-suspension induces altered expression of GAPDH and ZAKI-4β mRNAs in rat hindlimbs : Implication for disuse muscle atrophy.2003

    • Author(s)
      OHMORI S, KAMBE F, SEO H, 他4名
    • Journal Title

      Environmental Medicine 47(1)

      Pages: 15-19

    • NAID

      110004322453

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Tail-suspension induces altered expression of GAPDH and ZAKI-4β mRNAs in rat hindlimbs : Implication for disuse muscle atrophy.2003

    • Author(s)
      OHMORI S, KANDA K, MITSUYAMA H, MIYAZAKI T, CAO X, KAMBE F, SEO H
    • Journal Title

      Environmental Medicine 40(1)

      Pages: 15-19

    • NAID

      110004322453

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] D.Zadworny, et al., F.Kambe, H.Seo: "The involvement of 3β-hydroxysterol- Δ^<24>-reducatase, a post-squalene enzyme in cholesterol biosynthesis, in desmosterolosis"Environmental Medicine. 47(1). 1-11 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Kobayashi, T.Imai, F.Kambe, et al.: "Effect of ACTH on the proliferation of the rat adrenal gland"Environmental Medicine. 47(1). 20-21 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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