在细胞癌的氧下,NF-Β1淘汰会降低IL6的表达
Luiz Felipe S Teixeira1, Maria Helena Bellini2
1Centro de Biotecnologia, Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil. luiz.silva@ipen.br.
Cellular and molecular biology (Noisy-le-Grand, France)
|August 22, 2023
概括
研究人员使用CRISPR/Cas-9在细胞癌 (RCC) 细胞中敲除NF-κB1,发现它显著降低了互白素-6 (IL-6) 表达的调节. 这一发现为ccRCC瘤生长和潜在的治疗点提供了新的见解.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 细胞癌 (RCC),特别是清细胞RCC (ccRCC),是成年人患的一种流行癌症.
- ·希佩尔-林道 (VHL) 基因的突变在ccRCC中很常见,并影响缺氧诱导因子 (HIF) 调节.
- 核因子kappa B (NF-κB),特别是NF-κB1,通过IL-6等标志物与RCC的攻击性和血管生成有关.
研究的目的:
- 研究NF-κB1在ccRCC瘤性中的作用.
- 在不同氧气条件下确定NF-κB1淘汰对IL-6表达的影响.
- 探索针对ccRCC中NF-κB通路的潜在治疗策略.
主要方法:
- 使用CRISPR/Cas-9基因编辑创建NF-κB1 (p105/p50) 淘汰人类腺癌 (786-0) 细胞.
- 通过西方斑点分析证实NF-κB1的淘汰效果.
- 量化IL-6mRNA和蛋白质水平通过实时PCR和多重检测在normoxia和 hypoxia下.
主要成果:
- CRISPR/Cas-9成功地产生了NF-κB1淘汰786-0细胞系.
- 抑制p50 (NF-κB1的一个组成部分) 导致下调IL-6mRNA和蛋白质表达.
- 缺氧和正常性条件之间的IL-6的差异表达减少,表明细胞对缺氧的反应发生了变化.
结论:
- 在ccRCC细胞中,NF-κB1在调节IL-6表达方面发挥着至关重要的作用.
- 向NF-κB1可能是一个可行的策略,以降低IL-6水平,并可能抑制ccRCC的进展.
- 这项研究提供了关于NF-κB1抑制后IL-6调节的低氧修饰细胞反应的证据.
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
Adaptive Mechanisms in Cancer Cells
5.8K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K


