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Clarification of the mechanism of the interaction between germ cells and Sertoli cells in infant rat

Research Project

Project/Area Number 17K16808
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Urology
Research InstitutionNagoya City University

Principal Investigator

KATO TAIKI  名古屋市立大学, 医薬学総合研究院(医学), 病院助教 (00620931)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords停留精巣 / 血液精巣関門 / 男性不妊 / セルトリ細胞 / 精子幹細胞 / ラット / Claudin11 / 発生・分化
Outline of Final Research Achievements

Cryptorchidism is the most common congenital disease with boys and known to impair spermatogenesis in the future.The blood-testis barrier(BTB) becomes defined in seminiferous tubules around puberty and provides a suitable environment for spermatogenesis. We have developed a cryptorchid male rat, and we found that the BTB protein distributions were altered in the cryptorchid model.More apoptotic germ cells were detected at the same time,or impaired spermatogenesis were observed. The BTB disorganization may cause spermatogenic impairment, possibly by limiting the BTB function. Our study might lead to the possibility of a new treatment for male infertility that targets the BTB.

Academic Significance and Societal Importance of the Research Achievements

停留精巣における男性不妊の原因を解明するにあたり、これまで精子形成細胞に着眼した研究が数多く行われてきた。しかし、精子形成を支持細胞するセルトリ細胞に着目した研究は少なく、セルトリ細胞がその成立に深く関与する血液精巣関門に着目した研究はごくわずかである。本研究により、停留精巣では血液精巣関門の機能障害が生じ、精子形成に悪影響を与える可能性が示唆された。不妊治療という観点から、精子の源となる精子形成細胞を操作することは、倫理的に問題となる。一方、精子形成の足場となるセルトリ細胞を誘導して精子形成細胞の分化を促すことができれば、生命倫理的問題も克服できる男性不妊の新規治療法につながる可能性がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (17 results)

All 2020 2019 2018 2017

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 4 results) Book (1 results)

  • [Journal Article] Disorganization of claudin-11 and dysfunction of the blood-testis barrier during puberty in a cryptorchid rat model2020

    • Author(s)
      Kato Taiki、Mizuno Kentaro、Nishio Hidenori、Moritoki Yoshinobu、Kamisawa Hideyuki、Kurokawa Satoshi、Nakane Akihiro、Maruyama Tetsuji、Ando Ryosuke、Hayashi Yutaro、Yasui Takahiro
    • Journal Title

      Andrology

      Volume: - Issue: 5 Pages: 231-235

    • DOI

      10.1111/andr.12788

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Association of syringomyelia with lower urinary tract dysfunction in anterior sacral meningocele with a tethered spinal cord: A case report and literature summary.2018

    • Author(s)
      Kato T, Moritoki Y, Mizuno K, Nakagawa M, Goro K, Yasui T.
    • Journal Title

      International Journal of Urology

      Volume: 25 Issue: 5 Pages: 515-516

    • DOI

      10.1111/iju.13534

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Can lichen sclerosus be diagnosed by preputial appearance or symptoms.2018

    • Author(s)
      Kato Taiki, Mizuno Kentaro, Nishio Hidenori, Moritoki Yoshinobu, Nakane Akihiro, Kurokawa Satoshi, Kamisawa Hideyuki, Maruyama Tetsuji, Yasui Takahiro, Hayashi Yutaro
    • Journal Title

      Research and Reports in Urology

      Volume: 10 Pages: 89-94

    • DOI

      10.2147/rru.s173184

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Urothelial carcinoma of the urinary bladder in a 12-year-old girl: A case report with immunohistological analysis and a review of the literature.2018

    • Author(s)
      Kato Taiki, Mizuno Kentaro, Naiki Taku, Nishio Hidenori, Iida Keitaro, Moritoki Yoshinobu, Ando Ryosuke, Okada Atsushi, Yasui Takahiro, Hayashi Yutaro
    • Journal Title

      Urology Case Reports

      Volume: 17 Pages: 29-31

    • DOI

      10.1016/j.eucr.2017.12.008

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] A rare case of epididymal abscess in an infant treated successufully with needle aspiraton.2017

    • Author(s)
      Nishio Hidenori, Mizuno Kentaro, Kato Taiki, Moritoki Yoshinobu, Kamisawa Hideyuki, Kurokawa Satoshi, Nakane Akihiro, Okada Atsushi, Yasui Takahiro, Hayashi Yutaro
    • Journal Title

      Urology Case Reports

      Volume: 13 Pages: 26-27

    • DOI

      10.1016/j.eucr.2017.03.012

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Involvement of the bone morphogenic protein/SMAD signaling pathway in the etiology of congenital anomalies of the kidney and urinary tract accompanied by cryptorchidism2017

    • Author(s)
      Mizuno Kentaro、Nakane Akihiro、Nishio Hidenori、Moritoki Yoshinobu、Kamisawa Hideyuki、Kurokawa Satoshi、Kato Taiki、Ando Ryosuke、Maruyama Tetsuji、Yasui Takahiro、Hayashi Yutaro
    • Journal Title

      BMC Urology

      Volume: 17 Issue: 1 Pages: 1-6

    • DOI

      10.1186/s12894-017-0300-9

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Abnormal Claudin-11 localization and its effects on the blood-testis barrier function during puberty in a cryptorchid rat model2020

    • Author(s)
      Kato Taiki, Mizuno K, Nishio H, Moritoki Y, Kamisawa H, Kurokawa S, Nakane A, Maruyama T, Ando R, Hayashi Y, Yasui T.
    • Organizer
      European Association of Urology, annual meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 思春期停留精巣モデルラットにおける血液精巣関門タンパクClaudin11の発現と局在2019

    • Author(s)
      加藤大貴 水野健太郎 西尾英紀 安井孝周 林祐太郎
    • Organizer
      日本小児泌尿器科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 思春期の停留精巣モデルラットにおける血液精巣関門関連タンパクの発現解析2019

    • Author(s)
      加藤 大貴、水野 健太郎、西尾 英紀、中根 明宏、丸山 哲史、安井 孝周、林 祐太郎
    • Organizer
      第107回日本泌尿器科学会総会
    • Related Report
      2018 Research-status Report
  • [Presentation] Correlation of spermatogonial stem cells with inihibin-B in infant boys with unilateral undescended testes.2018

    • Author(s)
      Kato Taiki, Mizuno Kentaro, Moritoki Yoshinobu, Yasui Takahiro, Hayashi Yutaro
    • Organizer
      16th Urological Association of Asia Congress 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Testicular histopathology and sertoli cell hormones in relation to testicular position at orchidopexy with unilateral cryptorchidism.2018

    • Author(s)
      Kato Taiki, Mizuno Kentaro, Nishio Hidenori, Moritoki Yoshinobu, Kamisawa Hideyuki, Kurokawa Satoshi, Nakane Akihiro, Maruyama Tetsuji, Hayashi Yutaro, Yasui Takahiro
    • Organizer
      The Societies for Pediatric Urology 66th Annual Meeting, 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Testicular histology in infants with prader-willi syndrome.2017

    • Author(s)
      Kato Taiki, Mizuno Kentaro, Nishio Hidenori, Moritoki Yoshinobu, Nakane Akihiro, Kamisawa Hideyuki, Kurokawa Satoshi, Maruyama Tetsuji, Yasui Takahiro, Hayashi Yutaro
    • Organizer
      American Urological Association Annual Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 小児に発症した膀胱原発尿路上皮癌の1例2017

    • Author(s)
      加藤 大貴、内木 拓、海野 怜、西尾 英紀、濱川 隆、水野 健太郎、窪田 泰江、河合 憲康、戸澤 啓一、林 祐太郎、安井 孝周
    • Organizer
      第275回日本泌尿器科学会東海地方会
    • Related Report
      2017 Research-status Report
  • [Presentation] 閉塞性乾燥性亀頭炎の臨床所見と病理組織学的所見の再考-包皮白色変化と瘢痕形成は閉塞性乾燥性亀頭炎の存在を示唆する-2017

    • Author(s)
      加藤 大貴、西尾 英紀、守時 良演、安井 孝周、林 祐太郎
    • Organizer
      第26回日本小児泌尿器科学会総会・学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 肉眼的血尿を契機に発見された膀胱癌の1例-本邦24例の検討から振り返った15歳未満の小児尿路上皮癌の特徴-2017

    • Author(s)
      加藤 大貴、水野 健太郎、安井 孝周、林 祐太郎
    • Organizer
      第26回日本小児泌尿器科学会総会・学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 小児持続勃起症の3例2017

    • Author(s)
      加藤 大貴、守時 良演、西尾 英紀、水野 健太郎、安井 孝周、林 祐太郎
    • Organizer
      第67回日本泌尿器科学会中部総会
    • Related Report
      2017 Research-status Report
  • [Book] 発症 新生児期 手術 1歳~1歳6カ月 泌尿生殖器 性分化疾患(先天性副腎過形成)ナースのための小児・新生児の外科疾患 完全マスターガイド2017

    • Author(s)
      加藤 大貴、水野 健太郎、青山 幸平、林 祐太郎
    • Total Pages
      4
    • Publisher
      MCメディカル出版
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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