展开的蛋白质反应会影响慢性淋巴细胞白血病的治疗结果和疾病进展
Umair Tahir Khan1, Kim Clarke2, Gina Eagle1
1Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
Scientific reports
|July 28, 2025
概括
展开的蛋白质响应 (UPR) 途径影响慢性淋巴细胞白血病 (CLL) 治疗结果. 用PERK抑制剂向UPR提高了在耐性CLL细胞中的fludarabine有效性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 基因组学,表观基因组学和转录基因组学为慢性淋巴细胞白血病 (CLL) 异质性的不完全解释.
- 对于mRNA和蛋白质表达之间的不一致性,需要进行蛋白质组分析来全面了解CLL.
研究的目的:
- 调查基于fludarabine的化疗免疫疗法治疗的患者中CLL蛋白质组和临床结果之间的关系.
- 确定与CLL治疗反应和疾病进展相关的分子途径.
主要方法:
- 使用SWATH-MS (质谱学) 对CLL样本的蛋白质组分析.
- 来自患者的治疗前样本的比较,最佳和次优反应.
- 在治疗前和疾病进展时对对样本进行分析.
- 西部涂抹测试用于评估fludarabine耐性CLL细胞中的蛋白质水平 (PERK,BiP).
- 在CLL细胞系中使用GSK2606414抑制PERK.
主要成果:
- 对于展开蛋白质响应 (UPR) 至关重要的eIF2信号通路在患者数据集和耐性CLL细胞系中都得到了显著的丰富.
- 弗鲁达拉耐药的CLL细胞表现出高的PERK水平和降低的BiP水平.
- 该PERK抑制剂GSK2606414使耐性CLL细胞对fludarabine敏感,而不会影响细胞活力或venetoclax细胞毒性.
结论:
- 展开蛋白质反应 (UPR) 是慢性淋巴细胞白血病 (CLL) 治疗结果和疾病进展的新决定因素.
- 准UPR通路是一种潜在的治疗策略,可以克服CLL中的fludarabine耐药性.
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