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基于gemcitabine的纳米平台的合理开发,以准SERPINB9/Granzyme B轴,以克服化疗免疫抵抗

Haozhe Huang^1,2, Yiqing Mu^1,2, Yixian Huang^1,2

¹Center for Pharmacogenetics, Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA.

Nature communications

|May 5, 2025

概括

SERPINB9蛋白质促进癌细胞的存活,而不是对化学疗法中的吉米他 (GEM). 通过纳米载体传递的siRNA抑制SERPINB9,可以提高GEM的疗效,提供一种新的胰腺癌治疗策略.

科学领域:

生物化学生物化学
分子生物学分子生物学
癌症研究癌症研究

背景情况:

SERPINB9 抑制了 B 巨酶 (GzmB),保护癌细胞免受 GzmB 诱导的死亡,并促进免疫疗法耐药性.
之前,SERPINB9在化学敏感性,特别是对凝胺 (GEM) 的作用是未知的.

研究的目的:

为了研究SERPINB9在癌症中gemcitabine (GEM) 化学敏感性中的作用.
开发一种新型的纳米载体系统,用于共同输送GEM和SERPINB9-向siRNA (siSPB9),以提高抗瘤功效.

主要方法:

研究了GEM对癌细胞中SERPINB9和GzmB表达的影响.
利用基因淘汰和淘汰技术来评估SERPINB9在GEM反应中的作用.
设计了一个POEM纳米载体,用于GEM和siSPB9.9的联合交付.
在胰腺癌模型中评估了联合分娩的治疗疗效.

主要成果:

GEM治疗通过ATF-3上调SERPINB9,同时还诱导GzmB.
冲击或冲击SERPINB9可以提高癌细胞对GEM的敏感性,这表明GzmB/SERPINB9轴的作用.
设计的POEM纳米载波器有效地同时交付GEM和siSPB9.9.
同时提供GEM和siSPB9显著改善了抗瘤效果,并在胰腺癌中重塑了瘤免疫微环境.

结论:

GzmB/SERPINB9轴在调节对GEM的化学敏感性方面发挥着至关重要的作用.
使用POEM纳米载体同时输送GEM和siSPB9,代表了胰腺癌的有前途的治疗策略.
这种方法有效地克服了GEM耐药性,并增强了抗瘤免疫力.

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