通过DNMT1和Hedgehog-GLI通路通过miR-217在现场对乳腺管道癌的表观遗传调节
Zixin Wang1,2, Liangping Wu1, Shuhui Lai2
1Department of Metabolic Surgery Jinshazhou Hospital of Guangzhou University of Chinese Medicine Guangzhou China.
Journal of cell communication and signaling
|September 5, 2025
概括
通过向DNA甲基转移酶1 (DNMT1) 抑制管道癌在位 (DCIS) 的进展. 这种表观遗传调节抑制了瘤的生长和侵袭,为乳腺癌提供了潜在的治疗策略.
科学领域:
- * 分子瘤学
- * 表观遗传学
- * 乳腺癌研究
背景情况:
- * 管道内癌 (DCIS) 是一种具有高进展潜力的非侵入性乳腺癌前体.
- * 异常的DNA甲基化在早期瘤发生过程中至关重要,但调节机制尚未完全理解.
- * 确定DCIS中DNA甲基化的关键调节者对于了解疾病进展至关重要.
研究的目的:
- * 研究miR-217在DCIS中调节DNA甲基转移酶1 (DNMT1) 的作用.
- * 阐明miR-217影响DCIS进展的分子机制.
- * 评估在DCIS中针对miR-217/ DNMT1轴的治疗潜力.
主要方法:
- * 甲基化和转录组数据集的综合生物信息分析.
- * 在ZR- 75-1细胞中使用RT- qPCR,双露西法酶记者测定,甲基化特异性PCR和染色体免疫沉进行体外验证.
- 使用裸体老鼠异种移植模型进行体内验证.
主要成果:
- * 在DCIS组织中,miR- 217的表达显著降低,与DNMT1水平相反相关.
- * miR-217直接向并抑制了DNMT1,导致TSHZ2促进体低甲基化和恢复TSHZ2表达.
- * miR-217/ DNMT1/ TSH2 途径抑制了 Hedgehog- GLI 信号传递,减少了体外和体内瘤的增殖,迁移,侵袭和生长.
结论:
- * miR-217/ DNMT1/ TSHZ2/ 刺- GLI 信号轴在表观遗传上调节了DCIS进展的致癌途径.
- * 针对这一轴是一个有前途的DCIS治疗策略.
- 通过调节DNA甲基化和下游信号通路,miR-217起到瘤抑制作用.
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