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单胞胎双胞胎的细胞机制:来自辅助生殖的线索

Hongbin Jin¹, Yang Han², Jennifer Zenker¹

¹Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.

Human reproduction update

|July 12, 2024

概括

单胞胎 (MZ) 双胞胎可以从早期胚胎分裂中产生的. 这项研究研究了单和二MZ结对的细胞机制,特别是在辅助生殖技术 (ART) 病例中.

科学领域:

生殖生物学生殖生物学
发育生物学是发展生物学.
遗传学遗传学是一个

背景情况:

单胞胎 (MZ) 双胞胎是由单个受精胚胎的裂变产生的.
单MZ双胞胎起源于细胞内质量 (ICM) 在胚芽细胞内分裂.
传统上,二子MZ双胞胎是由紧缩前胚胎分裂形成的,但ART病例表明胚胎细胞分裂后.

研究的目的:

使用ART和动物模型分析ICM分裂在单MZ双胞胎中的细胞机制.
重新检查二子MZ双胞胎的经典早期分裂模型.
调查导致ART中两个胚胎囊的细胞机制,可能导致二子MZ双胞胎.

主要方法:

搜索了PubMed关于MZ双胞胎,试管婴儿,ART和单个胚胎移植的研究.
包括研究文章,评论和案例报告,以及针对ART和动物模型的特定搜索术语.
通过隐含的机制或未解释的机制对检索文件进行分类.

主要成果:

囊胚细胞中较宽松的ICM增加了分离的机会,通过物理力量 (布拉斯托科尔形成,8形化) 导致单MZ双胞胎.
在ART中二子MZ双胞胎的形成可能发生在异常化或单个胚芽细胞的玻璃化加热后.
动物模型显示形态,分子机制和时间的变化,使研究复杂化.

结论:

了解MZ结对机制对于改善ART的预测和预防至关重要.
创新的体外人类胚胎模型为未来的MZ结对提供了潜在的洞察力.
ART单个胚胎移植无法防止MZ双胞胎发生,突出显示需要进一步研究.

关键词:

辅助化帮助化辅助生殖辅助生殖是一种辅助生殖.胚胎囊洞化胚胎囊洞化霍里昂霍里昂是什么意思胚胎发育过程中的胚胎发育.内细胞质量细胞质量.双胞胎是一卵性双胞胎.这里是Zona Pellucida地区.

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