在晚期前列腺癌中激活FOXA1变化的不同结构类别
Abhijit Parolia1,2,3, Marcin Cieslik1,2,4, Shih-Chun Chu1,2
1Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI, USA.
Nature
|June 28, 2019
概括
前列腺癌中的叉头盒A1 (FOXA1) 变化分为三类,这些变化导致瘤发生和转移. 了解这些FOXA1变化为激素驱动的癌症提供了新的治疗策略.
科学领域:
- 癌症学
- 分子生物学
- 遗传学
背景情况:
- 叉头盒A1 (FOXA1) 是一种对包括前列腺在内的内皮衍生器官发育至关重要的先驱转录因子.
- 在激素受体驱动的癌症中,FOXA1的变化很普遍,但其在瘤发生中的作用仍在争论中,报告了瘤抑制和瘤功能.
- 通过FOXA1变化导致癌症发展和进展的具体机制尚不清楚.
研究的目的:
- 在前列腺癌中对FOXA1的结构变化进行分类.
- 研究不同FOXA1变异类的不同临床发病率,遗传共同变异特征和功能后果.
- 阐明FOXA1改变在前列腺癌发病和转移中的作用.
主要方法:
- 对1546例前列腺癌的综合分析.
- 将FOXA1变化的结构分为三个不同的类别.
- 研究突变部位,染色体结合特性和基因转活.
- 评估与其他癌症相关基因 (例如ETS,SPOP,TLE3) 的共同变化.
主要成果:
- 在35%的前列腺癌中发生FOXA1改变,并被分为具有独特特征的三个结构类别.
- 在早期前列腺癌中,DNA结合域中的类1突变增强FOXA1染色体结合并激活雄激素受体信号.
- 通过TLE3无活化通过WNT通路激活促进转移.
- 3类基因组重组会导致FOXA1或其他瘤基因过度表达,特别是在转移性癌症中.
结论:
- FOXA1 变化被分为三个不同的结构类型,它们对前列腺癌的发病和进展有不同的影响.
- 这些发现重申了FOXA1在雄激素受体中介性瘤发生中的核心作用,并提供了对其瘤功能的机制性见解.
- 了解这些FOXA1变异类对激素受体驱动癌症的病理生物学有直接影响,并建议共同向策略.
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