在肺癌细胞系中对MALAT1受调的基因表达进行分析
Jungwook Roh1, Boseong Kim1, Mijung Im1
1Department of Science Education, Korea National University of Education, Cheongju-si, 28173, Chungbuk, Republic of Korea.
BMC cancer
|September 4, 2023
概括
转移相关的肺腺癌转录1 (MALAT1) 促进非小细胞肺癌 (NSCLC) 的生长和入侵. 与MALAT1相关的五个差异表达基因 (DEG) 已被确定,为NSCLC提供了潜在的诊断和预后生物标志物.
科学领域:
- 分子瘤学分子瘤学
- 生物标志物发现发现
- 癌症基因组学 癌症基因组学
背景情况:
- 非小细胞肺癌 (NSCLC) 由于预后不佳,因此具有重大临床挑战.
- 识别分子生物标志物对于早期NSCLC诊断,治疗和改善患者结果至关重要.
- 转移相关的肺腺癌转录1 (MALAT1) 涉及NSCLC进展,并被提议作为诊断/预后标志物.
研究的目的:
- 在NSCLC细胞系中,由MALAT1调节的基因表达变化.
- 使用生物信息学研究MALAT1和差异表达基因 (DEGs) 之间的相关性.
- 为了确定NSCLC诊断和预后的潜在生物标志物.
主要方法:
- 定量逆转录PCR (RT-qPCR) 用于MALAT1表达.
- 功能性测试 (细胞计数,殖民地形成,伤口愈合,Transwell入侵) 来评估MALAT1的作用.
- RNA测序 (RNA-seq) 用于在MALAT1敲除后的转录组概况.
- 基因本体学 (GO) 和KEGG对DEG丰富的途径分析.
- 生物信息数据库分析 (OncoLnc,TNMplot) 以求生存和表达的相关性.
主要成果:
- 与正常肺细胞相比,NSCLC细胞系中MALAT1表达显著升高.
- 马拉特1敲击抑制了NSCLC细胞的存活,增殖,迁移和入侵.
- 在MALAT1敲击后,RNA-seq确定了198个上调和266个下调的DEG.
- 根据生存分析选择并验证了五种常见的DEG (PGAM1,PGAM4,NOL6,NAP1L5,SESN1).
- 这五种DEG的基因表达水平与NSCLC患者的存活率相关.
结论:
- MALAT1作为一种瘤基因,促进NSCLC细胞的增殖,生存和入侵.
- 五种DEGs (PGAM1,PGAM4,NOL6,NAP1L5,SESN1) 与NSCLC瘤发生和患者存活率密切相关.
- 这些已识别的DEG值得进一步调查,因为它们是NSCLC的潜在治疗标和预后生物标志物.
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