转录基因组-蛋白质组合分析确定了LARP7的高表达,促进了胃肠道 stromal 瘤的瘤发生和发展
1Department of Gastrointestinal Surgery, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Qingyang District, Chengdu, 610072 China.
Translational oncology
|February 11, 2025
概括
高水平的LARP7表明胃肠道 stromal 瘤 (GISTs) 的预后不佳. 该基因可能是GIST治疗的治疗标,特别是在对伊马替尼布抗性病例中.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 胃肠道 stromal 瘤 (GISTs) 是消化道中最常见的介质细胞瘤.
- 虽然c-kit和PDGFRA突变是关键驱动因素,但GIST的病原性仍然不完全理解.
研究的目的:
- 在GIST中识别和描述新的预后生物标志物.
- 调查LARP7在GIST发展,进展和潜在治疗向中的作用.
主要方法:
- 不同基因表达分析,生存分析 (Cox回归,Kaplan-Meier) 和途径分析 (CytoSig).
- 免疫细胞透的分析 (TIMER2.0) 和GIST组织和细胞系的验证 (CCK8,伤愈合试验).
- 在对伊马替尼布耐药的GIST中调查lncRNA-miRNA-LARP7轴和LARP7表达.
主要成果:
- 在mRNA和蛋白质水平上,LARP7在GIST中显著上调,与预后不佳相关,特别是在小肠GIST和较大的瘤中.
- 增加LARP7表达与IFN诱导的基因表达,病毒过程调节,增加CD8+T细胞透和对伊马替尼布耐药性有关.
- LARP7的淘汰抑制了GIST细胞系的增殖和迁移,并确定了lncRNA (H19或LINC00665) -miRNA ((hsa-miR-138-5p) 轴作为一个调节器.
结论:
- 高LARP7表达是GIST预后不佳的标志物,与特定的生物通路和免疫微环境特征有关.
- LARP7代表了GIST的潜在治疗标,包括对伊马替尼布耐药的形式,其他药物对治疗有希望.
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