Signal crosstalk between TGF-beta and Hippo-pathway in pancreatic
Project/Area Number |
18K08651
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 55020:Digestive surgery-related
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Research Institution | Kumamoto University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
林 洋光 熊本大学, 病院, 助教 (80625773)
岡部 弘尚 熊本大学, 病院, 非常勤診療医師 (40573621)
橋本 大輔 熊本大学, 病院, 非常勤診療医師 (80508507)
|
Project Period (FY) |
2018-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | 膵癌 / YAP / TAZ / TGF-beta / EMT / 抗がん剤抵抗性 / TGF |
Outline of Final Research Achievements |
YAP/TAZ protein expressions were investigated by western botting in pancreatic ductal adenocarcinoma (PDAC) cells, and then seven of 8 PDAC cells displayed predominant TAZ expression rather than YAP. Treatment of recombinant TGFbeta1 suppressed phosphorylated YAP/TAZ expressions, but not do not affect total YAP/TAZ expressions. These finding showed that TGF beta1 activated YAP/TAZ signaling pathway. Furthermore, In several PDAC cells, TGF beta1 treatment promoted EMT with loss of E-cadherin, and knockdown of YAP/TAZ attenuated TGF beta mediated EMT induction. These findings suggested that TGF beta-Hippo signal crosstalk might be associated with the invasiveness in PDAC.
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Academic Significance and Societal Importance of the Research Achievements |
本研究は難治癌として知られる膵臓癌におけるEMT獲得機構において、主要なEMT誘導因子としてしられるTGF-betaシグナルと多くの固形癌で破綻していることが知られるHippo-pathwayのcross talkによる膵癌浸潤・転移機構の解明を試みた。癌微小環境としての間質(CAF)由来のTGFbetaが膵癌細胞におけるHippo-pathwayの不活化を促進し、YAP/TAZの活性化を介してEMTを誘導して浸潤能獲得に寄与していることが示唆された。固形癌における主要な二つのシグナルがcross talkすることで高悪性度獲得に寄与することを示した。
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Report
(4 results)
Research Products
(4 results)