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Study of obesity-associated carcinogenesis and its application to cancer prevention

Research Project

Project/Area Number 26250028
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Tumor biology
Research InstitutionOsaka University (2015-2016)
Japanese Foundation for Cancer Research (2014)

Principal Investigator

Hara Eiji  大阪大学, 微生物病研究所, 教授 (80263268)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥38,350,000 (Direct Cost: ¥29,500,000、Indirect Cost: ¥8,850,000)
Fiscal Year 2016: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Fiscal Year 2015: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
Fiscal Year 2014: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Keywords細胞老化 / 肥満 / 腸内細菌 / 発がん / 癌 / 遺伝子 / 微生物
Outline of Final Research Achievements

We have previously shown that increased level of DCA, a secondary bile acid, contributes to liver cancer development in obese mice. However, the precise mechanisms underlying this phenomenon remain unclear. In this study, following findings are obtained: (1) obesity increases the levels of cholesterols and thereby causing production of bile acid. Because high level of bile acid is toxic for many gut bacteria, gut bacteria which are resistant to bile acid, such as secondary bile acid producing bacteria, are preferentially increased in obese mice, resulting in alteration of gut bacterial community in obese mice. (2) Although DCA on its own can provoke senescence-associated secretary phenotype (SASP) in hepatic stellate cells (HSCs) in lean mice, it takes a much longer time as compared to those in obese mice. Here, we show that DCA cooperates with Lipoteichoic acid (LTA), to provoke the onset of SASP in HSCs through toll-like receptor 2 signaling pathway in obese mice.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (30 results)

All 2017 2016 2015 2014 Other

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 8 results,  Acknowledgement Compliant: 6 results) Presentation (18 results) (of which Int'l Joint Research: 4 results,  Invited: 18 results) Remarks (2 results)

  • [Journal Article] Gut microbiota promotes obesity-associated liver cancer through PGE2-mediated suppression of antitumor immunity.2017

    • Author(s)
      Loo TM, Kamachi F, Watanabe Y, Yoshimoto S, Kanda H, Arai Y, Nakajima-Takagi Y, Iwama A, Koga T, Sugimoto Y, Ozawa T, Nakamura M, Kumagai M, Watashi K, Taketo M, Aoki T, Narumiya S, Oshima M, Arita M, Hara E, Ohtani N.
    • Journal Title

      Cancer Discov

      Volume: in press Issue: 5 Pages: 522-538

    • DOI

      10.1158/2159-8290.cd-16-0932

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The impact of SASP and its potential as a therapeutic target for senescence-associated diseases.2017

    • Author(s)
      Watabnabe, S., Kawamoto, S., Ohtani, N., & Hara, E.
    • Journal Title

      Cancer Science

      Volume: - Issue: 4 Pages: 563-569

    • DOI

      10.1111/cas.13184

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Exosomes maintain cellular homeostasis by excreting harmful DNA from cells2017

    • Author(s)
      Takahashi, A., Okada, R., Nagao, K., Kawamata, Y., Hanyu, A., Yoshimoto, S., Takasugi, M., Watanabe, S., Kanemaki, M.T., Obuse, C. & Hara, E.
    • Journal Title

      Nature Communications

      Volume: - Issue: 1 Pages: 15287-15287

    • DOI

      10.1038/ncomms15287

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Ablation of the p16INK4a tumour suppressor reverses ageing phenotypes of klotho mice2015

    • Author(s)
      Seidai Sato, Yuka Kawamata, Akiko Takahashi, Yoshinori Imai, Aki Hanyu, Atsushi Okuma, Masaki Takasugi, Kimi Yamakoshi, Hiroyuki Sorimachi, Hiroaki Kanda, Yuichi Ishikawa, Saburo Sone, Yasuhiko Nishioka, Naoko Ohtani and Eiji Hara
    • Journal Title

      Nature communications

      Volume: 6 Issue: 1 Pages: 7035-7035

    • DOI

      10.1038/ncomms8035

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Dysregulation of the Bmi-1/p16Ink4a pathway provokes an aging-associated decline of submandibular gland function.2015

    • Author(s)
      Yamakoshi K, Katano S, Iida M, Kimura H, Okuma A, Ikemoto-Uezumi M, Ohtani N, Hara E, Maruyama M.
    • Journal Title

      Aging Cell

      Volume: - Issue: 4 Pages: 1-9

    • DOI

      10.1111/acel.12337

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Evidence for a CDK4-dependent checkpoint in a conditional model of cellular senescence.2015

    • Author(s)
      Brookes S, Gagrica S, Sanij E, Rowe J, Gregory FJ, Hara E, and *Peters G.
    • Journal Title

      Cell Cycle

      Volume: 14 Issue: 8 Pages: 1164-1173

    • DOI

      10.1080/15384101.2015.1010866

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vivo imaging models of bone and brain metastases and pleural carcinomatosis with a novel human EML4-ALK lung cancer cell line.2015

    • Author(s)
      Nanjo S, Yano S, et al.
    • Journal Title

      Cancer Sci

      Volume: 106 Issue: 3 Pages: 244-52

    • DOI

      10.1111/cas.12600

    • NAID

      120005830611

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] An essential role for senescent cells in optimal wound healing through secretion of PDGF-AA.2014

    • Author(s)
      Demaria, M., Ohtani, N., Youssef, S.A., Rodier, F., Toussaint, W., Mitchell, J.R., Laberge, R.M., Vijg, J., Van Steeg, H., Dollé, M.E.T., Hoeijmakers, J.H.J., de Bruin, A., Hara, E.., Campisi, J.
    • Journal Title

      Developmental Cell

      Volume: 31 Issue: 6 Pages: 722-733

    • DOI

      10.1016/j.devcel.2014.11.012

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Necessary and sufficient role for a mitosis skip in senescence induction.2014

    • Author(s)
      Johmura Y, Shimada M, Misaki T, Naiki-Ito A, Miyoshi H, Motoyama N, Ohtani N, Hara E, Nakamura M, Morita A, Takahashi S, Nakanishi M.
    • Journal Title

      Mol.Cell

      Volume: 55 Issue: 1 Pages: 73-84

    • DOI

      10.1016/j.molcel.2014.05.003

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crosstalk between the RB-pathway and AKT signalling forms a Quiescence-Senescence switch.2014

    • Author(s)
      Imai, Y., Takahashi, A., Hanyuu, A., Hori, S., Sato, S., Naka, K., Hirao, A., Ohtani, N., Hara, E.
    • Journal Title

      Cell Reports

      Volume: 7 Issue: 1 Pages: 194-207

    • DOI

      10.1016/j.celrep.2014.03.006

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 腸内細菌による発がん制御2016

    • Author(s)
      原 英二
    • Organizer
      日本臨床栄養学会
    • Place of Presentation
      大阪市
    • Year and Date
      2016-10-08
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Obesity and cancer : a gut microbial connection2016

    • Author(s)
      Eiji Hara
    • Organizer
      日本癌学会
    • Place of Presentation
      横浜市
    • Year and Date
      2016-10-06
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Cellular senescence and liver cancer : a gut microbial connection2016

    • Author(s)
      Eiji Hara
    • Organizer
      FASEB Conference, Liver Biology
    • Place of Presentation
      West palm beach, FL, USA
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Obesity, the gut microbiome and liver cancer2016

    • Author(s)
      Eiji Hara
    • Organizer
      EASL The International Liver Congress
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2016-04-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Obesity and cellular senescence: a gut microbial connection2015

    • Author(s)
      Eiji Hara
    • Organizer
      International Cell Senescence Association Conference
    • Place of Presentation
      Santiago de Compostela, Spain
    • Year and Date
      2015-07-19
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Obesity and Cellular Senescence: a gut microbial connection2015

    • Author(s)
      Eiji Hara
    • Organizer
      EMBO Workshop Developmental Circuits in Aging
    • Place of Presentation
      Crete, Greece
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gut microbiota and fatty liver disease2015

    • Author(s)
      Eiji Hara
    • Organizer
      Gut microbiota for health world summit 2015
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2015-03-14 – 2015-03-15
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Obesity and cancer: a gut microbial connection2014

    • Author(s)
      Eiji Hara
    • Organizer
      日本免疫学会
    • Place of Presentation
      京都市
    • Year and Date
      2014-12-10 – 2014-12-12
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] The roles of cellular senescence in aging and cancer2014

    • Author(s)
      Akiko Takahashi, Eiji Hara
    • Organizer
      日本分子生物学会
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2014-11-25 – 2014-11-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 細胞老化と発癌:腸内細菌の関与について2014

    • Author(s)
      原英二
    • Organizer
      日本肥満学会
    • Place of Presentation
      宮崎市
    • Year and Date
      2014-10-23 – 2014-10-25
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 細胞老化反応の生体内イメージング2014

    • Author(s)
      大熊敦史、大谷直子、山越貴水、原 英二
    • Organizer
      日本生化学会
    • Place of Presentation
      京都市
    • Year and Date
      2014-10-15 – 2014-10-17
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Relationship between obesity, gut microbiome and HCC development2014

    • Author(s)
      Eiji Hara
    • Organizer
      Falk Gastro-Conference
    • Place of Presentation
      Freiburg, Germany
    • Year and Date
      2014-10-08 – 2014-10-11
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Crosstalk between the Rb-pathway and AKT signaling forms a Quiescence- Senescence switch2014

    • Author(s)
      Eiji Hara
    • Organizer
      日本癌学会
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2014-09-25 – 2014-09-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 細胞老化と炎症2014

    • Author(s)
      原 英二
    • Organizer
      日本動脈硬化学会
    • Place of Presentation
      東京
    • Year and Date
      2014-07-11 – 2014-07-12
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 細胞老化と炎症2014

    • Author(s)
      原 英二
    • Organizer
      日本炎症・再生医学会
    • Place of Presentation
      沖縄県名護市
    • Year and Date
      2014-07-01 – 2014-07-03
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] The roles and mechanisms of cellular senescence2014

    • Author(s)
      Eiji Hara
    • Organizer
      日本基礎老化学会国際シンポジウム
    • Place of Presentation
      愛知県大府市
    • Year and Date
      2014-06-26 – 2014-06-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Obesity-induced gut microbial metabolite promotes liver cancer via senescence secretome2014

    • Author(s)
      Eiji Hara
    • Organizer
      Cold Spring Harbor Asia Conference
    • Place of Presentation
      Suzhou, China
    • Year and Date
      2014-05-19 – 2014-05-23
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 細胞老化と発癌2014

    • Author(s)
      原 英二
    • Organizer
      日本臨床分子医学会
    • Place of Presentation
      東京
    • Year and Date
      2014-04-12 – 2014-04-13
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Remarks] 大阪大学微生物病研究所原研究室

    • URL

      http://www.biken.osaka-u.ac.jp/lab/molmicro/

    • Related Report
      2016 Annual Research Report
  • [Remarks] 原 英二 研究室 ホームページ

    • URL

      http://www.biken.osaka-u.ac.jp/lab/molmicro/

    • Related Report
      2015 Annual Research Report

URL: 

Published: 2014-04-04   Modified: 2018-03-22  

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