2022 Fiscal Year Final Research Report
The elucidation of YAP/TAZ-mediated acquisition of diversity in pancreatic cancer cancer-associated fibroblasts and mechanisms of cancer progression
Project/Area Number |
21K15534
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 50010:Tumor biology-related
|
Research Institution | Kumamoto University |
Principal Investigator |
Yamao Takanobu 熊本大学, 大学院生命科学研究部(医), 特定研究員 (70836337)
|
Project Period (FY) |
2021-04-01 – 2023-03-31
|
Keywords | 高血糖 / 膵がん / がん関連線維芽細胞(CAFs) / YAP/TAZ / がん微小環境 / 抗がん剤抵抗性 |
Outline of Final Research Achievements |
We have elucidated the mechanism of tumor cell progression in pancreatic cancer based on hyperglycemia and YAP/TAZ signaling. First, in vitro experiments showed that hyperglycemia in tumor cell lines augments resistance to anticancer drugs via YAP/TAZ protein expression, and in vivo experiments showed that hyperglycemia induces an increase in tumor size by subcutaneous and orthotopic transplantation of human cell lines using mice. In addition, hyperglycemia was found to increase tumor size in mice. In addition, hyperglycemia activates not only tumor cells but also cancer-associated fibroblasts. At the same time, YAP/TAZ inhibitors suppress fibrosis and may contribute to the suppression of cancer progression in the pancreatic cancer microenvironment. These findings suggest that hyperglycemia regulates cancer progression via YAP/TAZ signaling in pancreatic cancer.
|
Free Research Field |
肝胆膵がん
|
Academic Significance and Societal Importance of the Research Achievements |
世界における死亡率第4位である膵がんは、根治切除後も再発率が高く予後不良であり、有効な化学療法や分子標的治療薬も限られている。近年、免疫チェックポイント阻害薬の開発は幅広い固形癌の治療成績向上に寄与してきたが膵がんにおいてはその適応は非常に限られている。YAP /TAZシグナルはがん細胞のみならずがん細胞周囲の微小環境においても浸潤・転移といった癌悪性度に寄与することが注目されており、今回我々が解明した高血糖状態におけるYAP /TAZシグナルを介したがん進展メカニズムは膵がんおよびがん微小環境をターゲットとした新規治療薬の開発に寄与することが期待される。
|