IGSF8は先天的な免疫チェックポイントであり,がん免疫療法の標的である
Yulong Li1, Xiangyang Wu1, Caibin Sheng2
1Shanghai Xunbaihui Biotechnology Co., Ltd., 3rd floor of Building 4, No. 3728, Jinke Road, Pudong New Area, Shanghai, 201203, China.
Cell
|April 24, 2024
まとめ
腫瘍はIGSF8を通じて先天的な免疫を回避し,それは自然殺虫剤 (NK) 細胞の機能を抑制する. IGSF8を阻害すると,NK細胞の活性が増加し,腫瘍の成長が抑制され,新たな治療標的となる.
科学分野:
- 免疫学
- 腫瘍学
- 分子生物学
背景:
- 腫瘍は抗原表現の欠陥によって適応免疫を回避する.
- 腫瘍が先天的な免疫を回避するメカニズムは,まだ理解されていない.
- 自然キラー (NK) 細胞は先天的な抗腫瘍反応に不可欠です.
研究 の 目的:
- 腫瘍が先天的な免疫を回避する 新しいメカニズムを特定する
- NK細胞抑制における IGSF8の役割を調査する.
- 抗ガン免疫療法として抗IGSF8抗体を評価する.
主な方法:
- CRISPRスクリーニングで 免疫回避遺伝子を特定します
- NK細胞の機能を評価するために,in vitroとin vivoで測定する.
- 抗IGSF8の治療効果を評価するための同胞性腫瘍モデル.
主要な成果:
- 腫瘍に発現するIGSF8は,KIR3DL2/ Klra9受容体と相互作用することでNK細胞機能を抑制する.
- IGSF8の過剰発現は,不良な臨床結果と免疫浸透の減少と相関しています.
- 抗IGSF8抗体治療はNK細胞の細胞毒性を高め,腫瘍の成長を vivoで抑制する.
結論:
- IGSF8は腫瘍に対する 生まれつきの免疫チェックポイントとして機能します
- IGSF8を標的にすることは,がんの免疫療法における有望な治療戦略です.
- 抗IGSF8と抗PD1を併用した治療は,相乗効果のある抗腫瘍効果を示しています.
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