核酸切除修复缺陷是清细胞脏细胞癌中可向的治疗脆弱性
Aurel Prosz1, Haohui Duan2,3, Viktoria Tisza4,5
1Danish Cancer Institute, Copenhagen, Denmark.
Scientific reports
|November 23, 2023
概括
清细胞细胞癌 (ccRCC) 可能存在核酸切除修复 (NER) 缺陷,使其对向治疗敏感. 一些患有NER缺乏和高PTGR1表达的ccRCC患者可能对irofulven治疗有反应.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 清细胞细胞癌 (ccRCC) 由于假定的DNA修复能力,缺乏针对性的合成致死性疗法.
- 研究ccRCC中的核酸切除修复 (NER) 缺陷可以确定对特定疗法敏感的子集.
研究的目的:
- 为了确定ccRCC的一个子集是否表现出NER缺陷.
- 评估ccRCC对irofulven的敏感性,这是一个转录合的NER (TC-NER) 向剂.
- 在ccRCC中识别NER缺乏和irofulven敏感性的生物标志物.
主要方法:
- 测量紫外线诱导的DNA损伤的功能测试,以量化ccRCC细胞系中的NER缺陷.
- 评估对TC-NER抑制剂irofulven的敏感性.
- 分析与NER缺陷相关的突变特征 (例如,ERCC2突变) 的全外基因组测序数据.
- 测量前列腺素还原酶1 (PTGR1) 表达作为潜在的生物标志物.
主要成果:
- 功能性测试证实了ccRCC细胞系中的NER缺陷.
- 一些ccRCC细胞系表现出对iroful的敏感性,即使在耐受良好的度.
- 在ccRCC细胞系和患者瘤的一个子集中检测到与NER缺乏相关的突变特征.
- 高的PTGR1表达与对抗性敏感性相关.
- 在TCGA队列中,大约10%的ccRCC患者表现出NER缺陷特征和高PTGR1表达.
结论:
- 在ccRCC的一个子集中存在NER缺乏,这表明有针对性治疗的潜力.
- 具有特定NER缺陷特征和高PTGR1表达的患者可能受益于irofulven治疗.
- 伊洛富尔文 (Irofulven) 是一种先前探索过的药物,它对治疗特定的ccRCC亚群具有前途.
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