在T-LBL/ALL中,BPTF-665aa介导的染色质重塑驱动化学抵抗
Rong-Hui Chen1,2,3,4, Mei Li5, Zhen-Zhong Zhou1,2
1Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China.
Journal of experimental & clinical cancer research : CR
|November 7, 2025
概括
一种新型的循环RNA,circBPTF,通过稳定BPTF蛋白来驱动T细胞淋巴细胞淋巴瘤/白血病 (T-LBL/ALL) 的化学抵抗. 这种蛋白质增强了染色质的可访问性,促进了癌细胞的存活,并提供了一个新的治疗点.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
背景情况:
- 在T细胞淋巴细胞淋巴瘤/白血病 (T-LBL/ALL) 中,化疗抵抗是一个重大的临床挑战.
- 识别T-LBL/ALL耐化学药性背后的分子机制对于开发有效疗法至关重要.
研究的目的:
- 调查循环RNABPTF (circBPTF) 在T-LBL/ALL中介化学抵抗的作用.
- 确定BPTF-665aa作为circBPTF的关键蛋白质产物,参与化学抵抗.
- 探索BPTF-665aa作为T-LBL/ALL的潜在治疗点.
主要方法:
- 转录形状分析用于在耐化学性T-LBL/ALL样本中识别差异表达的circRNAs.
- 功能性实验,以评估circBPTF及其蛋白质产物BPTF-665aa在化学抵抗中的作用.
- 染色体免疫沉和评估染色体可访问性的测试.
- 结构研究,分子对接和动力学模拟,以描述BPTF-665aa及其抑制剂HY-B0509.
主要成果:
- 在耐化学反应的T-LBL/ALL样本中,circBPTF显著过度表达.
- 蛋白质产品BPTF-665aa抑制了全长BPTF的随处化媒介降解.
- BPTF-665aa增强了包括c-Myc P2在内的关键促进子区域的染色质可访问性,在治疗压力下促进细胞存活.
- 小分子HY-B0509被确定为BPTF-665aa的强有力的抑制剂,显示稳定的结合.
结论:
- 由circBPTF衍生的BPTF-665aa通过调节染色质可访问性和促进细胞存活,促进T-LBL/ALL中的化学抵抗.
- 在T-LBL/ALL中,BPTF-665aa代表了一个有前途的治疗标,用于克服T-LBL/ALL的化学抵抗.
- 用像HY-B0509这样的抑制剂向BPTF-665aa可能为T-LBL/ALL治疗提供了一种新的策略.
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