在头支状细胞癌中,PV-10通过内质网膜应激和亡来触发免疫细胞死亡
Sowjanya Thatikonda1, Ritu Chaudhary2, Yeva Meshkovska3
1Moffitt Cancer Center, United States.
Molecular cancer therapeutics
|June 24, 2025
概括
通过诱导癌细胞死亡和免疫反应,PV-10 (孟加拉) 在治疗头部和部状细胞癌症 (HNSCC) 中表现有前途. 这种内伤疗法在临床前模型中显示出显著的瘤回归,这表明潜在的复发性HNSCC治疗.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 头部和部状细胞癌 (HNSCC) 对复发病例的存活率很低,需要新的治疗策略.
- PV-10 (孟加拉) 是一种具有已证明抗瘤作用的试验性内伤剂,但其在HNSCC中的确切机制尚未完全理解.
研究的目的:
- 为了评估PV-10在HNSCC细胞系中的细胞毒性作用.
- 阐明PV-10抗瘤活性背后的分子机制,包括其诱导免疫细胞死亡 (ICD) 的潜力.
主要方法:
- 在体外细胞毒性测定和使用HNSCC细胞系 (mEER,MTE-RAS) 的机制研究.
- 评估活性氧物种 (ROS) 生产,亡标志物和与ICD相关的分子 (HMGB1,ATP,calreticulin,HSP-70,HSP-90) 的评估.
- 在体内研究中,在HNSCC小鼠模型 (mEER,MTE-Ras) 中进行了内PV-10注射.
主要成果:
- 在HNSCC细胞中,PV-10通过ROS产生和酶依赖的途径诱导显著的细胞毒性和亡.
- 治疗PV-10促进了ICD特征,其证据是HMGB1的增加,ATP的释放,以及calreticulin,HSP-70和HSP-90的增强表达.
- 内PV-10导致实质性的瘤回归体内,在33%的mEER瘤小鼠中观察到完整的反应.
结论:
- 在HNSCC中,PV-10触发免疫细胞死亡,可能是通过内分泌网膜应激,自和亡.
- 这些发现支持PV-10作为局部复发HNSCC的潜在治疗剂,并需要进一步的临床研究.
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