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Mechanism underlying the reduction of methylmercury toxicity by Ragulator complex which is an autophagy regulator

Research Project

Project/Area Number 25281023
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Risk sciences of radiation and chemicals
Research InstitutionTohoku University

Principal Investigator

HWANG Gi-Wook  東北大学, 薬学研究科(研究院), 准教授 (00344680)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI TSUTOMU  東北大学, 大学院薬学研究科, 助教 (00400474)
TOYAMA TAKASHI  東北大学, 大学院薬学研究科, 助教 (50720918)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2013: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywordsメチル水銀 / オートファジー / 毒性
Outline of Final Research Achievements

In this study, we found that methylmercury induced the autophagy through the function-loss of Ragulator complex which suppresses autophagy induction, but not known mechanisms. In addition, methylmercury induced the function-loss by promoting the degradation of Ragulator complex. When autophagy-related gene was inhibited by RNA interference, cultured-cells showed the methylmercury resistance. Taken together, we concluded that methylmercury might be cause the cytotoxicity through the induction of excessive autophagy.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (24 results)

All 2016 2015 2014 2013 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results,  Acknowledgement Compliant: 3 results) Presentation (16 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (3 results)

  • [Journal Article] Whi2 enhances methylmercury toxicity in yeast via inhibition of Akr1 palmitoyltransferase activity2016

    • Author(s)
      Hwang G.W., Fukumitsu T., Ogiwara Y., Takahashi T., Miura, N., Kuge S. and Naganuma A.
    • Journal Title

      Biochim. Biophys. Acta.

      Volume: 1860 Issue: 6 Pages: 1326-1333

    • DOI

      10.1016/j.bbagen.2016.03.026

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Overexpression of palmitoyl transferase HIP14 confers resistance to methylmercury in SH-SY5Y human neuroblastoma cells2016

    • Author(s)
      Ogiwara Y., Miura N., Kuge S., Naganuma A. and Hwang G.W.
    • Journal Title

      Fundamental Toxicological Sciences

      Volume: 3 Issue: 2 Pages: 75-77

    • DOI

      10.2131/fts.3.75

    • NAID

      130005140184

    • ISSN
      2189-115X
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Transport of pyruvate into mitochondria is involved in methylmercury toxicity2016

    • Author(s)
      Lee J.Y., Ishida Y., Takahashia T., Naganuma A. and Hwang G.W.
    • Journal Title

      Sci. Rep.

      Volume: 6 Issue: 1 Pages: 21518-21528

    • DOI

      10.1038/srep21518

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The protein transportation pathway from Golgi to vacuoles via endosomes plays a role in enhancement of methylmercury toxicity2014

    • Author(s)
      Hwang G.W., Murai Y., Takahashi T., Naganuma A.
    • Journal Title

      Scientific Reports

      Volume: 4 Issue: 1 Pages: 5888-5888

    • DOI

      10.1038/srep05888

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in the levels of low molecular weight metabolites in the mouse cerebellum following treatment with methylmercury2013

    • Author(s)
      Hwang GW1, Lee JY, Kim MS, Sato M, Takahashi T, Naganuma A
    • Journal Title

      The Journal of Toxicological Sciences

      Volume: 38 Issue: 5 Pages: 703-706

    • DOI

      10.2131/jts.38.703

    • NAID

      10031191729

    • ISSN
      0388-1350, 1880-3989
    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] メチル水銀によるオートファジー誘導機構の解析2016

    • Author(s)
      長谷川 貴、松田 健人、永沼 章、黄 基旭
    • Organizer
      日本薬学会第136回年会
    • Place of Presentation
      横浜
    • Year and Date
      2016-03-29
    • Related Report
      2015 Annual Research Report
  • [Presentation] Methylmercury induces cytotoxicity through transport of pyruvate into mitochondria2016

    • Author(s)
      Jin-Yong Lee, b, Yosuke Ishida, Akira Naganuma and Gi-Wook Hwang
    • Organizer
      55th Annual Meeting of the Society of Toxicology
    • Place of Presentation
      New Orelans, USA
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pyruvate incorporated into the mitochondria is involved in enhancement of methylmercury toxicity through mitochondrial membrane potential damage2015

    • Author(s)
      Jin-Yong Lee, Yosuke Ishida, Akira Naganuma, Gi-Wook Hwang
    • Organizer
      The 31th Annual Meeting of KSOT/KEMS
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      2015-11-12
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] メチル水銀が引き起こすアポトーシスとポリアミンとの関わり2015

    • Author(s)
      佐藤昌幸、永沼 章、黄 基旭
    • Organizer
      メタルバイオサイエンス2015
    • Place of Presentation
      名古屋
    • Year and Date
      2015-08-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] メチル水銀によるアポトーシス誘導におけるプトレシンの役割2015

    • Author(s)
      佐藤昌幸、永沼 章、黄 基旭
    • Organizer
      第42回日本毒性学会学術年会
    • Place of Presentation
      金沢
    • Year and Date
      2015-06-30
    • Related Report
      2015 Annual Research Report
  • [Presentation] The role of EGO complex in methylmercury-induced abnormal vacuolar morphology in yeast cells2015

    • Author(s)
      Zhi-Ting Zhang, Akira Naganuma, Gi-Wook Hwang
    • Organizer
      The 7th International Congress of Asian Society of Toxicology
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2015-06-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] メチル水銀毒性発現における細胞内ポリアミン代謝系の関与2015

    • Author(s)
      佐藤 昌幸, 永沼 章, 黄 基旭
    • Organizer
      日本薬学会第135年会
    • Place of Presentation
      神戸
    • Year and Date
      2015-03-27 – 2015-03-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] Methylmercury Induces Abnormal Vacuolar Morphology through the Dissociation of EGO Complex in Yeast.2015

    • Author(s)
      Gi-Wook Hwang, Zhi-Ting Zhang and Akira Naganuma
    • Organizer
      54th Annual Meeting of the Society of Toxicology
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2015-03-23 – 2015-03-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] EGO complex attenuates methylmercury toxicity through the inhibition of vacuole dysfunction in budding yeast2014

    • Author(s)
      Gi-Wook Hwang, Zhi-Ting Zhang and Akira Naganuma
    • Organizer
      The 29th Annual Meeting of KSOT/KEMS
    • Place of Presentation
      Muju, Korea
    • Year and Date
      2014-11-06 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] ポリアミン合成系によるメチル水銀毒性軽減機構の解明2014

    • Author(s)
      佐藤 昌幸、黄 基旭、永沼 章
    • Organizer
      第53回日本薬学会東北支部大会
    • Place of Presentation
      いわき
    • Year and Date
      2014-10-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] メチル水銀毒性とオートファジー抑制因子EGO複合体との関わり2014

    • Author(s)
      黄 基旭
    • Organizer
      フォーラム2014:衛生薬学・環境トキシコロジー
    • Place of Presentation
      つくば
    • Year and Date
      2014-09-19 – 2014-09-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] メチル水銀によるオートファジー誘導におけるLAMTOR複合体の関与2014

    • Author(s)
      松田 健人、高橋 勉、黄 基旭、永沼 章
    • Organizer
      フォーラム2014:衛生薬学・環境トキシコロジー
    • Place of Presentation
      つくば
    • Year and Date
      2014-09-19 – 2014-09-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] Metabolomic analysis in cerebellum of mice treated with methylmercury and elucidation of toxicological significance of identified metabolites2013

    • Author(s)
      Masayuki Sato, Gi-Wook Hwang, Akira Naganuma
    • Organizer
      The XIII International Congress of Toxicology
    • Place of Presentation
      ソウル (韓国)
    • Related Report
      2013 Annual Research Report
  • [Presentation] メチル水銀毒性に影響を与える低分子代謝産物の同定およびその作用機序解析2013

    • Author(s)
      佐藤昌幸、黄 基旭、永沼 章
    • Organizer
      フォーラム2013:衛生薬学・環境トキシコロジー
    • Place of Presentation
      福岡
    • Related Report
      2013 Annual Research Report
  • [Presentation] Involvement of NF-κB Signaling Pathway in Methylmercury-induced CCL4 Expression in Mouse Neural Progenitor Cells2013

    • Author(s)
      Min-Seok Kim, Jin-Yong Lee, Gi-Wook Hwang, Tsutomu Takahashi, Akira Naganuma
    • Organizer
      The 29th Annual Meeting of KSOT/KEMS
    • Place of Presentation
      Buyeo(韓国)
    • Related Report
      2013 Annual Research Report
  • [Presentation] Investigation of the Mechanisms Involved in Cadmium-induced Endoplasmic Reticulum Stress2013

    • Author(s)
      Gi-Wook Hwang
    • Organizer
      The 29th Annual Meeting of KSOT/KEMS
    • Place of Presentation
      Buyeo(韓国)
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Remarks]

    • URL

      http://www.pharm.tohoku.ac.jp/~seitai/seitai-index.html

    • Related Report
      2015 Annual Research Report
  • [Remarks] 東北大学大学院薬学研究科生体防御薬学分野

    • URL

      http://www.pharm.tohoku.ac.jp/~seitai/seitai-index.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 東北大学大学院薬学研究科生体防御薬学分野

    • URL

      http://www.pharm.tohoku.ac.jp/~seitai/seitai-index.html

    • Related Report
      2013 Annual Research Report

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Published: 2013-05-21   Modified: 2019-07-29  

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