SOX9是骨髓瘤中RUNX2-调节的转录电路的关键组成部分
Young-Im Kim1, Yu-Chou Tseng1, Gamze Ayaz1
1Cancer and Stem Cell Epigenetics Group, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.
Cell & bioscience
|July 25, 2023
概括
这项研究确定SOX9是骨髓瘤 (OS) 存活的关键转录因子,由RUNX2调节并影响MYC. 向SOX9和JMJD1C可能为这种癌症提供新的治疗策略.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 骨肉瘤 (OS) 的进展是由转录和表观遗传机制驱动的,这是由于缺乏可操作的遗传改变.
- RUNX2是OS细胞存活的关键转录因子 (TF),但其调节网络在很大程度上仍然未知.
- 识别促进OS细胞存活的TF对于开发向疗法至关重要.
研究的目的:
- 阐明骨髓癌细胞中由RUNX2调节的转录网络.
- 确定参与OS细胞存活的新型转录因子.
- 探索骨髓瘤的潜在治疗点.
主要方法:
- 通过RNAseq和ChIPseq分析,在RUNX2电路中识别TF.
- 实验室试验 (caspase-3免疫血栓,酸染) 来评估SOX9对OS细胞存活的影响.
- 在体内异种移植模型和免疫组织化学评估SOX9和JMJD1C耗尽影响.
- RNAseq,途径分析和基因组丰富分析以确定SOX9下游目标.
- 生物ID和PLA用于识别和验证SOX9互动组.
主要成果:
- SOX9是RUNX2诱导的关键TF,在体外和体内都对OS细胞生存至关重要.
- SOX9激活MYC转录,这是RUNX2的下游目标,这表明RUNX2-SOX9-MYC的调节轴.
- JMJD1C被确定为SOX9的新型结合伙伴,其耗尽会抑制OS瘤的生长.
结论:
- 这项研究揭示了一个新的转录网络,涉及RUNX2,SOX9和MYC在骨髓瘤中.
- SOX9在OS细胞生存和瘤生长中发挥着关键作用.
- 这些发现为开发针对骨髓瘤的向治疗提供了宝贵的见解,强调SOX9和JMJD1C作为潜在的目标.
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