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2020 Fiscal Year Final Research Report

Examination of cancer stem cell marker CXCR4 in radiation-resistant pancreatic cancer for clinical application

Research Project

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Project/Area Number 18K08714
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionNagoya City University

Principal Investigator

Imafuji Hiroyuki  名古屋市立大学, 医薬学総合研究院(医学), 助教 (80790641)

Co-Investigator(Kenkyū-buntansha) 上田 悟郎  名古屋市立大学, 医薬学総合研究院(医学), 臨床研究医 (00811720)
齊藤 健太  名古屋市立大学, 医薬学総合研究院(医学), 助教 (10770240)
松尾 洋一  名古屋市立大学, 医薬学総合研究院(医学), 教授 (40381800)
林 祐一  名古屋市立大学, 医薬学総合研究院(医学), 助教 (60811726)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords膵癌 / 放射線耐性 / CXCL12/CXCR4シグナル / 浸潤 / CXCR4阻害剤
Outline of Final Research Achievements

Chemoradiotherapy is used as a treatment for locally advanced unresectable pancreatic cancer, but its therapeutic effect is not sufficient. Here, we showed that the expression of CXCR4 is upregulated in the radiation-resistant pancreatic cancer cell line, and that CXCL12 / CXCR4 signal is involved in the invasion ability of the radiation-resistant pancreatic cancer cell line. And we also showed that suppression of this signal suppressed the invasion ability of the radiation-resistant strain. It has been suggested that suppression of CXCL12 / CXCR4 signal using a CXCR4 antagonist may have an antitumor effect on radiation-resistant pancreatic cancer, but further functional analysis is required for clinical application.

Free Research Field

消化器外科学

Academic Significance and Societal Importance of the Research Achievements

局所進行膵癌の治療において、局所制御を行うとともに遠隔転移病巣の出現をいかに防止するかが生命予後の改善には重要であり、有効性の高い治療薬の開発は重大な課題である。今回、放射線耐性膵癌においてCXCL12/CXCR4シグナルが膵癌細胞株の浸潤能に関与しており、CXCR4阻害剤を用いることで浸潤能を抑制できることを明らかとした。CXCL12/CXCR4シグナルをターゲットとした分子標的薬剤の開発の可能性が示唆され、その臨床応用に向けた重要な研究であると考える。

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Published: 2022-01-27  

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