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2019 Fiscal Year Final Research Report

Elucidation of cancer growth mechanisms by C5a-C5aR axis

Research Project

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Project/Area Number 17K11679
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pathobiological dentistry/Dental radiology
Research InstitutionNagoya City University

Principal Investigator

Imai Masaki  名古屋市立大学, 医薬学総合研究院(医学), 講師 (30440936)

Co-Investigator(Kenkyū-buntansha) 太田 里永子  愛知県がんセンター(研究所), その他部局等, 研究員 (30452460)
山崎 小百合  名古屋市立大学, 医薬学総合研究院(医学), 教授 (70567255)
Project Period (FY) 2017-04-01 – 2020-03-31
KeywordsC5a / 補体 / 制御性T細胞
Outline of Final Research Achievements

C5a receptor (C5aR) is overexpressed in many cancer tissues, and binding of C5a to C5aR causes cancer growth, invasion and metastasis. We first examined whether C5aR expresses of the oral cancer cell lines or not, mRNA level of C5aR was highly detected. On the other hand, it has been reported that the C5a-C5aR system induces the differentiation of regulatory T cells (Treg cells) and invasion of Treg cells into cancer tissues. However, despite the reports that the C5a-C5aR system acts Treg cells, expression level of C5aR was very low on Treg cells.

Free Research Field

免疫学

Academic Significance and Societal Importance of the Research Achievements

多くの癌組織でC5a-C5aRシステムが癌の浸潤や転移に関わっているが、本研究では今まで明らかにされていない『口腔癌とC5a-C5aRシステムの関係』を明らかできることが特徴である。本研究で口腔癌の増殖にC5a-C5aRシステムの関与が示唆されたが、免疫系を制御するが制御性 T細胞の分化、浸潤に関与しなかったことから、腫瘍特異的なC5aR阻害剤を作成できれば副作用が少なく、高い抗腫瘍効果が得られると予想され、臨床応用への可能性がある。

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Published: 2021-02-19  

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