晚期黑色素瘤患者细胞外囊泡中的蛋白质含量在进展到抗PD1治疗后发生变化
Lucía Trilla-Fuertes1, Angelo Gámez-Pozo1,2, Fernando Laso-García3,4
1Molecular Oncology Lab, Institute of Medical and Molecular Genetics-INGEMM, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain.
Scientific reports
|January 21, 2026
概括
黑色素瘤患者的细胞外囊泡 (EV) 可以预测对抗PD1免疫疗法的反应. 在治疗前和治疗期间,EV蛋白质概况为治疗有效性和耐药性机制提供了洞察力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 用抗PD1抗体进行黑色素瘤免疫疗法显示患者的反应有变化.
- 确定抗PD1治疗的预测生物标志物对于优化黑色素瘤治疗至关重要.
研究的目的:
- 研究细胞外囊泡 (EVs) 作为先进黑色素瘤患者抗PD1免疫疗法反应的预测生物标志物.
- 在治疗前和治疗期间分析EV蛋白质概况,以了解治疗反应和耐药性机制.
主要方法:
- 血清细胞外囊泡 (EVs) 从9名晚期黑色素瘤患者在多个时间点中分离出来.
- 使用质谱蛋白质组学分析了电动汽车,随后进行了网络和丰富分析.
- 评估了EV蛋白签名与无进展生存率之间的相关性.
主要成果:
- 治疗前的反应者表现出更高的适应性免疫和细胞粘附蛋白,紫外线反应蛋白减少.
- 一个八种蛋白质的特征和粘附标记与更长的无进展生存相相关.
- 非响应者在治疗后表现出富含蛋白质和代谢途径 (糖解) 的EV蛋白;动态变化包括凝血减少和疾病进展中的MHC蛋白增加.
结论:
- 在对抗PD1治疗的响应者和不响应者之间,EV蛋白质配置有显著的差异.
- 电子瘤具有作为黑色素瘤免疫疗法的预测生物标志物的潜力.
- EV分析可以阐明抗PD1治疗耐药性的机制,指导未来的治疗策略.
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