联合 KRAS 抑制和免疫疗法可在自体 PDAC 模型中产生持久的完全应答。

IF 29.7 1区 医学 Q1 ONCOLOGY Cancer discovery Pub Date : 2025-01-13 DOI:10.1158/2159-8290.CD-24-0489
Yonghong Liu, Jincheng Han, Wen-Hao Hsu, Kyle A LaBella, Pingna Deng, Xiaoying Shang, Paulino Tallón de Lara, Li Cai, Shan Jiang, Ronald A DePinho
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引用次数: 0

摘要

胰腺导管腺癌(PDAC)对传统的化疗/放疗和免疫疗法有抵抗力。在 PDAC 中,致癌基因 KRAS(KRAS*)驱动癌细胞中的糖酵解消耗可用葡萄糖并产生大量乳酸,从而在肿瘤微环境中造成严重的免疫抑制。在这里,我们将 KRAS* 抑制与针对免疫循环主要臂膀的药物相结合:针对骨髓细胞的 CXCR1/2 抑制剂、针对 T 细胞的拮抗剂抗 LAG3 抗体以及针对树突状细胞的激动剂抗 41BB 抗体。这种组合能在携带巨大自体肿瘤的 iKPC 小鼠中产生强大的抗肿瘤消退作用。未经治疗的小鼠会在 3 周内死亡,而持续治疗可使肿瘤持久完全消退,并延长 36% 的小鼠在 6 个月后的存活时间。机理分析表明,T 细胞浸润和活化增强,免疫抑制性髓细胞耗竭,肿瘤核心内树突状细胞的抗原交叉呈递增加。这些发现凸显了 KRAS* 抑制剂与免疫疗法一起作为潜在的 PDAC 治疗途径的前景,值得进行临床研究。
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Combined KRAS Inhibition and Immune Therapy Generates Durable Complete Responses in an Autochthonous PDAC Model.

Significance: Clinically available KRAS* inhibitors and IO agents alleviated the immunosuppressive tumor microenvironment in PDAC. Profound tumor regression and prolonged survival in an autochthonous PDAC model provide a compelling rationale for combining KRAS* inhibition with IO agents targeting multiple arms of the immunity cycle to combat PDAC.

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来源期刊
Cancer discovery
Cancer discovery ONCOLOGY-
CiteScore
22.90
自引率
1.40%
发文量
838
审稿时长
6-12 weeks
期刊介绍: Cancer Discovery publishes high-impact, peer-reviewed articles detailing significant advances in both research and clinical trials. Serving as a premier cancer information resource, the journal also features Review Articles, Perspectives, Commentaries, News stories, and Research Watch summaries to keep readers abreast of the latest findings in the field. Covering a wide range of topics, from laboratory research to clinical trials and epidemiologic studies, Cancer Discovery spans the entire spectrum of cancer research and medicine.
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