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在骨髓瘤转移中FAS受体甲基化的作用
Jiayi M Sun1,2, Wing-Yuk Chow2,3, Gufeng Xu2,3
1Program of Quantitative and Computational Biosciences, Baylor College of Medicine, Houston, TX 77030, USA.
International journal of molecular sciences
|August 12, 2023
概括
骨髓瘤中的DNA甲基化变化调节FAS表达,影响癌细胞迁移和转移. 脱甲基剂在治疗这种骨癌方面表现有前途.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 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:
- 骨髓瘤是一种主要的恶性骨瘤,对肺转移的倾向很高.
- FAS连接体 (FASL) 和FAS受体的相互作用通常会诱导亡,但这在癌症中通常是失调的.
- 之前的研究没有发现FAS促进物CpG岛甲基化中的变异性,这限制了对其调节的理解.
研究的目的:
- 研究DNA甲基化对调节骨髓瘤中FAS表达的作用.
- 探索CpG岛以外的扩大区域的甲基化变异性,包括海岸和货架.
- 评估脱甲基化剂在骨髓瘤中的治疗潜力.
主要方法:
- 对FAS基因CpG海岸和架子中的DNA甲基化变异性的分析.
- 双硫酸盐测序以确定转移性和非转移性细胞系之间的甲基化差异.
- 用5-azacytidine (一种去甲基化剂) 治疗和评估FAS表达,细胞迁移和体内转移.
主要成果:
- 在FAS CGI海岸的特定CpG位点的甲基化高变异性与FAS mRNA表达有负相关.
- 转移性LM7细胞在特定的FAS促进体CpG位点中显示出高甲基化,与非转移性SaOS-2细胞不同.
- 在小鼠中,5-阿扎西丁治疗减少了甲基化,恢复了FAS蛋白的表达,减少了LM7细胞迁移,并减少了肺转移.
结论:
- FAS CGI岸部位的DNA甲基化是骨髓瘤中FAS表达的关键调节者.
- 用像5-azacytidine这样的药物向DNA甲基化代表了骨髓瘤的潜在治疗策略.
- 脱甲基剂可以重新用于骨质肉瘤治疗,利用其他癌症的现有批准.
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