对人类入侵性细胞核细胞体的分析表明,马赛克积症
Jingly F Weier1,2, Christy Ferlatte1, Adolf Baumgartner1,2
1Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California (U.C.), San Francisco, California, United States of America.
PloS one
|July 21, 2023
概括
人类的侵入性细胞质细胞通常是超二倍体的,表现出显著的染色体增长和异质性. 这表明它在胎盘发育和细胞寿命中起着作用.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
背景情况:
- 人类的侵入性细胞质对胎盘发育至关重要.
- 了解它们的染色体含量是理解它们功能的关键.
研究的目的:
- 为了确定人类侵入性细胞核细胞体的染色体含量.
- 为了研究这些细胞中的染色体异质性.
主要方法:
- 开发了24个染色体特定的光在位杂交 (FISH) 探针.
- 分析了体外培养和初级侵袭性细胞核的相间核.
主要成果:
- 超过75%的侵入性细胞质细胞是超二倍体 (47-61染色体).
- 观察到显著的染色体异质性.
- 染色体13,14,15,19,21和22显示出复制数的增加 (>2.3).
- 同样的趋势在初级细胞质细胞体中也被发现.
结论:
- 获得了人类非增殖细胞原体的24染色体分析.
- 超二倍体和异质性没有内二倍化可能会为入侵提供选择性优势.
- 这些发现表明它在正常的胎盘发育和细胞循环中起作用.
相关概念视频
01:21Nondisjunction
3.9K
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold...
3.9K
01:17Karyotyping
61.8K
Overview
61.8K
02:57Meiosis vs. Mitosis
57.1K
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...
57.1K