Novel treatment strategy for peritoneal metastasis of gastric cancer targeting tumor microenvironment
Project/Area Number |
18K16362
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 55020:Digestive surgery-related
|
Research Institution | Okayama University |
Principal Investigator |
|
Project Period (FY) |
2018-04-01 – 2021-03-31
|
Project Status |
Completed (Fiscal Year 2020)
|
Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | 胃癌 / 腹膜播種 / p53 / 腫瘍溶解ウイルス / 癌関連線維芽細胞 / がん微小環境 / 腹腔内治療 / 癌微小環境 |
Outline of Final Research Achievements |
In the tumor microenvironment of peritoneal metastasis, cancer-associated fibroblasts (CAFs) contribute to establish the peritoneal metastasis and tumor progression. Transcriptional alteration of p53 in CAFs contributes to the tumor-supportive features. Furthermore, intraperitoneal administration of OBP-702, replicative oncolytic adenovirus-mediated p53 showed significant anti-tumor effect for peritoneal metastasis by modulating CAFs in addition to tumor lysis via exogenous p53 overexpression.
|
Academic Significance and Societal Importance of the Research Achievements |
現在、治療困難な胃癌腹膜播種の病態を解明し、癌細胞周囲の癌関連線維芽細胞が腫瘍の生着や増大に大きく関わっていることがわかった。さらに癌関連線維芽細胞においては、癌抑制遺伝子であるp53が機能異常を起こしていることにより、癌細胞を助ける働きをしている可能性が考えられた。 p53を搭載した腫瘍溶解ウイルスであるOBP-702は、癌細胞のみならず癌関連線維芽細胞にも作用して、効果を発揮し、強力な腹膜播種抑制効果があることがわかった。このことにより、OBP-702を用いた腹腔内治療は、胃癌腹膜播種に対する新しい有用な治療法となる可能性がある。
|
Report
(4 results)
Research Products
(6 results)
-
[Presentation] Boosting replication and penetration of telomerase-specific replicative virus by paclitaxel induces synthetic lethality in peritoneal metastasis of gastric cancer2019
Author(s)
Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
Organizer
アメリカ癌学会 2019
Related Report
Int'l Joint Research
-
[Presentation] A novel intraperitoneal theranostic virotherapy with Paclitaxel for peritoneal metastasis of gastric cancer2019
Author(s)
Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
Organizer
第25回日本遺伝子細胞治療学会
Related Report
-
[Presentation] The impact of p53 arming multi-potent oncolytic adenovirus on gastric cancer cells and tumor microenvironment2019
Author(s)
Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
Organizer
第78回日本癌学会
Related Report
-
-
[Presentation] Boosting replication and penetration of telomerase-specific replicative virus by paclitaxel induces synthetic lethality in peritoneal metastasis of gastric cancer2019
Author(s)
Toshihiro Ogawa, Satoru Kikuchi, Wataru Ishikawa, Hiroshi Tazawa, Motoyasu Tabuchi, Shinji Kuroda, Kazuhiro Noma, Masahiko Nishizaki, Shunsuke Kagawa, Yasuo Urata, Toshiyoshi Fujiwara
Organizer
American Association for Cancer Research Annual Meeting 2019
Related Report
Int'l Joint Research
-