在DNMT3A突变性克隆性血液形成和雌激素影响中的性别差异

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¹Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA.

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概括

造血DNMT3A突变在女性中更为频繁. 雌激素促进这些突变细胞的干细胞,这可能解释了它们在女性中更高的患病率.

科学领域:

血液学血液学血液学
遗传学遗传学是一个
内分泌学在内分泌学.

背景情况:

血液癌症和克隆性血液形成通常在男性中更为普遍.
然而,造血性DNMT3A突变在女性中患病率更高.
这表明潜在的性别特异机制影响这些条件.

研究的目的:

研究性激素,特别是雌激素在血液形成中的DNMT3A突变的作用.
了解DNMT3A突变克隆血形成的女性占主导地位背后的机制.

主要方法:

分析DNMT3A突变和副本数异常在英国生物库的一大群 (约45万参与者) 中的患病率.
使用小鼠模型研究Dnmt3a突变血造干细胞 (HSC) 和它们对雌激素的反应.
评估雌激素和雌激素受体α活性对Dnmt3a突变骨髓细胞竞争力的影响.

主要成果:

在英国生物库队列中,DNMT3A突变和副本数异常在女性中比男性更为普遍.
与雄性相比,雌性小鼠中的Dnmt3a突变HSC表现出增加的茎性基因表达.
通过雌激素受体α,雌激素通过雌激素受体α增强Dnmt3a突变骨髓细胞在增殖应激下的干性和竞争优势.

结论:

雌激素在维护Dnmt3a突变造血干细胞的干细胞性方面发挥着至关重要的作用.
雌激素诱导的增殖应激有利于Dnmt3a突变骨髓细胞的扩张.
这些发现表明,雌激素有助于观察到的DNMT3A突变克隆性血液形成和相关的髓状瘤的女性占主导地位.

关键词:

这就是CHIP CHIP.科普:干细胞研究在DNMT3A中,它是DNMT3A.这就是Esr1的意思.在HSC上,HSC是高质量的.克隆性血液形成 (clonal hematopoiesis) 是一种细胞形成的过程.雌激素雌激素雌激素是一种一个女人,一个女人,一个女人.激素激素激素激素激素在性爱中,性爱是性爱.干细胞是一种干细胞.

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