LINC02454-CCT复合相互作用对于头部和部状细胞癌的端粒酶活性和细胞增殖至关重要
Biying Chen1, Yue Weng2, Mingyue Li2
1Department of Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China; Shanghai Institute of Precision Medicine, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China.
Cancer letters
|February 24, 2024
概括
我们确定了LINC02454,一种特定于癌症的长非编码RNA,通过增强端粒酶活性来促进头部和部状细胞癌 (HNSCC) 的进展. 准LINC02454为HNSCC提供了一个潜在的治疗策略.
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:
- 头部和部状细胞癌 (HNSCC) 中,端粒酶的调节升高,但其调节尚未完全理解.
- 识别新的调节机制对于开发针对HNSCC的向疗法至关重要.
研究的目的:
- 为了识别和表征一种涉及HNSCC瘤发生的新型长非编码RNA (lncRNA).
- 阐明这个lncRNA在调节端粒酶活性和HNSCC进展中的功能作用.
- 评估在HNSCC中准这种lncRNA的治疗潜力.
主要方法:
- LncRNA芯片分析和外部数据集验证,以确定癌症特异性的 lncRNAs.
- 负染色传导电子显微镜 (NS-TEM) 用于研究分子相互作用.
- 端粒重复放大协议 (TRAP) 试验和定量光在位杂交 (Q-FISH) 来评估端粒酶活性和端粒长度.
- RNA测序 (RNAseq) 用于分析途径的改变.
- 细胞测试 (衰老,细胞循环,细胞亡) 和体外/体内实验以评估功能影响.
- 用腺病毒-shRNA进行治疗验证的患者衍生异种移植 (PDX) 模型.
主要成果:
- 一种癌症特异性lncRNA,LINC02454,被确定并与HNSCC的预后不佳有关.
- LINC02454与CCT复合体相互作用,增强端粒酶活性并维持端粒恒温.
- LINC02454的耗尽显著降低了端粒酶活性,缩短了端粒,并诱导了衰老.
- LINC02454 knockdown影响了与端粒酶,线粒分裂和亡相关的途径,抑制了HNSCC的增殖在体外和体内.
- 准LINC02454在HNSCC PDX模型中显示出治疗潜力.
结论:
- LINC02454是端粒酶活性的关键调节剂,在HNSCC的扩散和瘤发生中起着重要作用.
- LINC02454代表了头部和部状细胞癌的有前途的治疗标.
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