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在前列腺癌中,与DNA甲基化和雄激素受体相关的种族特异性协调和转录基因特征
Swathi Ramakrishnan1, Eduardo Cortes-Gomez2,3, Sarah R Athans1
1Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14263, USA.
Genome medicine
|April 2, 2024
概括
非洲裔美国人 (AA) 和欧洲裔美国人 (EA) 之间的前列腺癌差异与独特的分子途径有关. 向雄激素受体 (AR) 信号可能会改善AA男性的结果.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 前列腺癌不成比例地影响非裔美国 (AA) 男人,与欧洲美国 (EA) 男人相比,发病率和死亡率更高.
- 了解这些种族差异的分子基础对于改善临床管理和患者结果至关重要.
研究的目的:
- 调查导致AA和EA男性前列腺癌种族差异的分子机制和信号网络.
- 为了确定个性化治疗策略的潜在治疗目标.
主要方法:
- 采用了多omics方法,包括Illumina甲基化阵列和RNA测序,以分析AA和EA男性前列腺瘤和非瘤组织中的DNA甲基化和基因表达.
- 布尔网络分析被用来建模复杂的分子相互作用,并模拟抑制雄激素受体 (AR) 的效应.
主要成果:
- 在PRC2/H3K27me3通道中,DNA高甲基化得到丰富,而在AA男性中,低甲基化涉及嗅觉/核糖体通道和特定的辅因子,如CTCF和KMT2A.
- 在AR相关基因中观察到DNA甲基化和基因表达之间的种族特异反向关联,这表明前列腺癌中的AR信号失调.
- 在基模拟表明,长时间的AR抑制显著失调TGF-β,IDH1和细胞循环通路,特别是在AA前列腺癌. 在AA男性中,差异性基因表达与微管,免疫功能和TMPRSS2-融合途径有关,与疾病进展风险相关.
结论:
- 独特的信号网络区分了AA和EA男性的前列腺癌生物学,为特定种族的临床管理提供了洞察力.
- 准AR和相关途径是一个有希望的策略,以解决前列腺癌的结果差异.
- 对这些已识别的途径的进一步研究可以促进针对不同患者群体的个性化疗法的开发.
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