The relationships of tumor micro environment and radiation resistance with clonal hematopoiesis
Project/Area Number |
20K16824
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 52040:Radiological sciences-related
|
Research Institution | Osaka University |
Principal Investigator |
Tatekawa Shotaro 大阪大学, 大学院医学系研究科, 特任助教(常勤) (40816550)
|
Project Period (FY) |
2020-04-01 – 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 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
Keywords | 放射線治療学 / 放射線治療抵抗性 / 腫瘍微小環境 / DNA変異解析 / clonal hematopoiesis / Clonal Hematopoiesis |
Outline of Research at the Start |
Clonal Hematopoiesis (CH) とは血液学的異常が無い人に血液細胞の体細胞クローンの増殖を認めることと定義され、一般的に加齢とともに頻度が増加することが知られている。これまでの報告より、CH が局所の炎症を惹起し腫瘍環境の変化に関わっている可能性が考えられる。一方、慢性炎症や血管新生を始めとする腫瘍微小環境の放射線治療抵抗性へ果たす役割は大きい。しかし、腫瘍微小環境が感受性に直接影響する放射線治療と、CH との関連については未だ不明である。それを解明し、放射線治療抵抗性 に対する新たな治療標的を模索するのが本研究の目的である。
|
Outline of Final Research Achievements |
The current study aimed to elucidate the mechanism of clonal hematopoiesis(CH) and radiotherapy resistance. Sequence analysis of 67 patients with head and neck cancer showed that the presence of CH was a risk factor for both recurrence-free survival and local recurrence rate, as indicated by multivariate analysis including age and stage of disease. In addition, RNA-seq was performed in peripheral blood mononuclear cells with and without CH to compare gene expression, and the expression of genes that are major mediators of inflammation and immunity was higher in patients with CH. The possibility that the presence of CH may be involved in the induction of chronic inflammation was considered. Based on these results, we have created a mouse model of CH and are conducting additional analyses.
|
Academic Significance and Societal Importance of the Research Achievements |
これまで放射線治療抵抗性へのアプローチとしては低酸素イメージングや線量増加などの報告が多いが、CH に伴う炎症の惹起や腫瘍微小環境の変化に着目した研究は皆無であった。本研究はその点において独自性があり、化学放射線治療を受ける頭頸部癌患者においてCH の有無が局所再発率に関与していることが判明した。今後、CH による腫瘍微小環境の変化が放射線治療抵抗性へ関与していることをコンディショナルノックアウトマウスを用いて解析予定だが、それらが解明できれば抗炎症作用をもつ薬剤の投与や血管新生阻害剤、マクロファージの遊走を阻害する薬剤など、CH を有する患者における新たな治療戦略の設計が可能となる。
|
Report
(4 results)
Research Products
(18 results)
-
-
-
-
[Journal Article] Radiation therapy enhances systemic antitumor efficacy in PD-L1 therapy regardless of sequence of radiation in murine osteosarcoma.2022
Author(s)
Shohei Katsuki, Yutaka Takahashi, Keisuke Tamari, Kazumasa Minami, Wataru Takenaka, Yoriko Ibuki, Junya Yamamoto, Shotaro Tatekawa, Kazuhiko Hayashi, Yuji Seo, Fumiaki Isohashi, Kazuhiko Ogawa, Masahiko Koizumi
-
Journal Title
PLoS ONE
Volume: 17(7)
Issue: 7
Pages: 0271205-0271205
DOI
Related Report
Peer Reviewed / Open Access
-
-
[Journal Article] High Dose Local Photon Irradiation Is Crucial in Anti-CTLA-4 Antibody Therapy to Enhance the Abscopal Response in a Murine Pancreatic Carcinoma Model.2022
Author(s)
Junya Yamamoto, Yutaka Takahashi, Kazumasa Minami, Keisuke Tamari, Shohei Katsuki, Wataru Takenaka, Shotaro Tatekawa, Kazuhiko Hayashi, Yuji Seo, Fumiaki Isohashi, Kazuhiko Ogawa, Masahiko Koizumi.
-
Journal Title
Cancers
Volume: 14(9)
Issue: 9
Pages: 2087-2087
DOI
Related Report
Peer Reviewed / Open Access
-
-
[Journal Article] Emerging roles of long noncoding and circular RNAs in pancreatic ductal adenocarcinoma.2022
Author(s)
Sato, H., Hara, T., Tatekawa, S., Sasaki, K., Kobayashi, S., Kitagawa, T., Doki, Y., Eguchi, H., Ogawa, K., Uchida, S., Ishii, H.
-
Journal Title
Front. Physiol.
Volume: 13
Pages: 1025923-1025923
DOI
Related Report
Peer Reviewed / Open Access
-
-
[Journal Article] Stereotactic Ablative Radiotherapy Using CyberKnife for Stage I Non-small-cell Lung Cancer: A Retrospective Analysis.2022
Author(s)
Kazuhiko Hayashi , Osamu Suzuki , Hiroya Shiomi , Masataka Nakai , Kei Fujiwara , Erina Nakanishi , Shotaro Tatekawa , Takero Hirata , Keisuke Tamari , Haruhiko Hirata , Soichiro Funaki , Yuji Seo , Yoshito Takeda , Fumiaki Isohashi , Yasushi Shintani , Kazuhiko Ogawa
-
Journal Title
Anticancer research
Volume: 42
Issue: 1
Pages: 321-327
DOI
Related Report
Peer Reviewed / Open Access
-
-
[Journal Article] Monitoring expiratory carbon monoxide to study the effect of complete smoking cessation on definitive radiation therapy for early stage glottic carcinoma.2021
Author(s)
Shotaro Tatekawa , Shigetoshi Shimamoto , Yoshiaki Miyata , Yutaro Yoshino , Takero Hirata , Keisuke Tamari , Yuji Seo , Fumiaki Isohashi , Yoshifumi Yamamoto , Atsuhiko Uno , Hidenori Inohara , Kazuhiko Ogawa
-
Journal Title
Acta oncologica
Volume: 60
Issue: 5
Pages: 582-588
DOI
Related Report
Peer Reviewed / Open Access
-
[Presentation] m6Aにより制御されるPLK1の細胞周期恒常性は膵癌において新規放射線治療の標的となる2022
Author(s)
立川章太郎 , 玉利慶介 , 千々松良太 , 光藤傑 , 秋田裕史 , 小林省吾 , 村雲芳樹 , 土岐祐一郎 , 江口英利 , 小川和彦 , 石井秀始
Organizer
第81回 日本癌学会学術総会
Related Report
-
-
-
-
-