对具有不同染色体异常的无胚胎胚胎进行植入前发育分析
Keyi Si1, Bingxin Ma1, Jian Bai1
1Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, Wuhan, 430030, China.
Heliyon
|December 17, 2024
概括
研究体胚胎发育的研究显示,特定的染色体异常显著改变了形态动力学参数. 这些发现支持基于独特的发育模式的euploid胚胎的非侵入性选择.
科学领域:
- 生殖生物学 生殖生物学
- 遗传学 是一个遗传学.
- 胚胎学 胚胎学
背景情况:
- 染色体数异常 (aneuploidy) 影响了胚胎的发育.
- 通过时间间隔监测观察到的形态动力学参数为非侵入性胚胎评估提供了潜力.
- 了解染色体异常如何影响胚胎发育对于改善选择策略至关重要.
研究的目的:
- 研究各种染色体异常对胚胎形态动力学模式的影响.
- 为了识别特定的形态动力学参数,表明体积.
- 评估基于形态动力学数据的euploid胚胎的非侵入性选择的潜力.
主要方法:
- 对939个时间延迟植入前遗传测试周期的分析,涉及2876个活检胚胎囊.
- 使用了细胞体内精子注射,胚胎细胞培养,皮活检,时间延迟监测和下一代测序.
- 采用多层混合效应逻辑回归来分析形态动力学参数并预测皮质状态,调整为患者和循环因素.
主要成果:
- 六个关键的形态动力学参数 (t5,t8,tsB,tB,t5-t2,tB-tSB) 显著预测了euploid与aneuploid胚胎.
- 带有染色体片段缺失或重复的胚胎表现出长时间的形态动力学参数,特别是在晚期的裂变和囊胚阶段.
- 单体胚胎表现出延长的胚胎细胞阶段参数,并且特定的缺失 (20或22染色体) 导致多个阶段的显著延迟.
结论:
- 不同的染色体异常明显影响胚胎形态动力学参数.
- 在碎片突变和单体的胚胎中观察到形态动力学参数的显著延迟.
- 这些发现提供了对无胚胎胚胎发育的见解,并支持非侵入性胚胎选择方法.
更多相关视频
12:32Chromosome Screening of Human Preimplantation Embryos by Using Spent Culture Medium: Sample Collection and Chromosomal Ploidy Analysis
Published on: September 7, 2021
2.1K
11:25Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
Published on: February 22, 2016
10.8K
相关概念视频
Meiosis vs. Mitosis
52.7K
Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
52.7K
Karyotyping
57.5K
Overview
57.5K
