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Elucidation of complex microenvironmental crosstalk between pancreatic cancer progression and obesity

Research Project

Project/Area Number 19K17407
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionNagoya City University

Principal Investigator

Nishigaki Ruriko  名古屋市立大学, 医薬学総合研究院(医学), 臨床研究医 (60835164)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords膵癌 / 肥満 / 脂肪細胞 / 内臓脂肪
Outline of Research at the Start

非肥満マウス・肥満マウスのそれぞれの内臓脂肪組織から、脂肪前駆細胞を初代培養し、①膵癌細胞の単培養をコントロールとし、膵癌細胞と②非肥満内臓脂肪細胞、③肥満内臓脂肪細胞、の共培養を行い肥満脂肪細胞が膵癌細胞にもたらす影響を検討する。さらに、血管内皮細胞との共培養も行い、膵癌細胞・脂肪細胞が血管新生にもたらす影響を検討する。それぞれの現象のメカニズムを分子生物学的に解明した後、動物実験やヒト膵癌組織を使用し検証する。

Outline of Final Research Achievements

Visceral adipocytes cell lines were established from lean (L-Adv) and obese mice (O-Adv). Conditioned media from O-Adv significantly increased PDAC cell growth and migration and angiogenic capacity in both human and mice cells,compared to conditioned media from L-Adv. Blocking osteopontin (OPN) in O-Adv canceled O-Adv-induced effects through suppressing AKT phosphorylation and VEGFA expression.In the xenograft model, PDAC tumor volume was significantly increased in obese mice compared with lean mice, whereas blocking OPN significantly inhibited obesity-accelerated tumor growth. In PDAC patients with obesity, high OPN expression in adipose tissues was significantly associated with poor prognosis. In conclusion, obese adipocytes trigger aggressive transformation in PDAC cells to induce PDAC progression and accelerate angiogenesis via OPN secretion.

Academic Significance and Societal Importance of the Research Achievements

過去の複数の疫学的研究により、肥満は膵癌のリスク因子であること、予後不良因子であることがわかっているが、そのメカニズムは不明である。本研究では、細胞実験・動物実験・ヒトの膵癌組織を使用し多角的に検討をおこない、肥満患者の脂肪細胞ではオステオポンチンが高発現し、血管新生を促進し膵癌細胞を悪性化へと誘導するという新たな知見をえた。今後の肥満関連の治療開発や膵癌予防への発展が期待される。

Report

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

    (8 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (3 results)

  • [Journal Article] A Novel Urinary miRNA Biomarker for Early Detection of Colorectal Cancer.2022

    • Author(s)
      Iwasaki H, Shimura T, Kitagawa M, Yamada T, Nishigaki R, Fukusada S, Okuda Y, Katano T, Horike SI, Kataoka H.
    • Journal Title

      Cancers

      Volume: 14 Issue: 2 Pages: 461-461

    • DOI

      10.3390/cancers14020461

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel and Simple Criteria for Predicting Mortality of Peptic Ulcer Disease2021

    • Author(s)
      Iwasaki H, Shimura T, Yamada T, Nishigaki R, Okuda Y, Fukusada S, Ozeki T, Kitagawa M, Katano T, Tanaka M, Nishie H, Ozeki K, Kubota E, Tanida S, Kataoka H.
    • Journal Title

      Internal Medicine

      Volume: 60 Issue: 15 Pages: 2349-2356

    • DOI

      10.2169/internalmedicine.6945-20

    • NAID

      130008070675

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2021-08-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Urinary microRNA biomarkers for detecting the presence of esophageal cancer.2021

    • Author(s)
      Okuda Y, Shimura T, Iwasaki H, Fukusada S, Nishigaki R, Kitagawa M, Katano T, Okamoto Y, Yamada T, Horike SI, Kataoka H.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 8508-8508

    • DOI

      10.1038/s41598-021-87925-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between Immunophenotype and Clinicopathological Findings for Superficial Nonampullary Duodenal Epithelial Tumor2021

    • Author(s)
      Fukusada S, Shimura T, Iwasaki H, Okuda Y, Katano T, Nishigaki R, Ozeki T, Kitagawa M, Nishie H, Tanaka M, Ozeki K, Kubota E, Tanida S, Kataoka H
    • Journal Title

      Digestion

      Volume: Apr 1 Issue: 6 Pages: 1-8

    • DOI

      10.1159/000514812

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Serum Exosomal Dicer Is a Useful Biomarker for Early Detection of Differentiated Gastric Adenocarcinoma2020

    • Author(s)
      Okuda Y, Shimura T, Iwasaki H, Katano T, Kitagawa M, Nishigaki R, Fukusada S, Natsume M, Tanaka M, Nishie H, Ozeki K, Yamada T, Kataoka H.
    • Journal Title

      Digestion.

      Volume: Oct 13 Issue: 4 Pages: 1-10

    • DOI

      10.1159/000510993

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 当院における消化器系免疫関連有害事象(腸炎・肝炎・胆管炎)の現況2021

    • Author(s)
      西垣瑠里子、志村貴也、奥田悠介、杉村直美、尾関貴紀、北川美香、岩崎弘靖、片野敬仁、田中守、西江裕忠、尾関啓司、久保田英嗣、谷田諭史、片岡洋望.
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 当院における免疫チェックポイント阻害薬に伴う大腸炎の臨床病態の検討2021

    • Author(s)
      西垣瑠里子、志村貴也、尾関貴紀、北川美香、岩崎弘靖、片野敬仁、田中 守、西江裕忠、尾関啓司、久保田英嗣、谷田論史、片岡洋望
    • Organizer
      GI week 2021: 第17回日本消化管学会総会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 当院における免疫チェックポイント阻害薬に伴う大腸炎の臨床病態の検討2021

    • Author(s)
      西垣瑠里子、志村貴也、片岡洋望
    • Organizer
      第17回日本消化管学会総会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2024-12-25  

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