相关实验视频
Updated: May 9, 2025

10:23
Analysis of Epididymal Protein Synthesis and Secretion
Published on: August 25, 2018
9.3K
涉及流行病基底细胞分化和功能的分子途径
Daniel G Cyr1,2,3, Mary Gregory4, Louis Hermo5
1Laboratory for Reproductive Toxicology, INRS-Centre Armand-Frappier Santé Biotechnologie, Université du Québec, Laval, QC, Canada. daniel.cyr@inrs.ca.
Advances in experimental medicine and biology
|April 29, 2025
概括
脊髓中的未分化的原始细胞作为干细胞,分化为基底细胞和主要细胞. 这一过程对于早期的皮膜发育至关重要,涉及复杂的基因调节和信号通路.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 产后 epididymal 发育是复杂的,并没有完全理解.
- epididymis 中原始的小柱状细胞作为能够分化的干细胞起作用.
- 在老鼠中,流行病的发展发生在三个不同的阶段:不分化,分化和扩张.
研究的目的:
- 调查在产后流行病中的干细胞分化过程.
- 为了确定关键的基因和信号通路,涉及到 epididymal 干细胞分化.
- 了解早期皮膜外皮发育背后的分子机制.
主要方法:
- 在体外细胞培养中观察干细胞分化.
- 不同发育阶段之间的基因表达比较分析 (7天 vs. 18天).
- 对成年基底干细胞基因表达的分析与早期发育阶段相比.
主要成果:
- 未分化的原始细胞在体外分化为基底细胞和主要细胞.
- 显著的基因表达差异发生在早期的皮膜发育过程中,约有1500个基因在7至18天之间受到影响.
- 成年基底细胞,静止的干细胞种群,与第7天的流行病菌共享约400个共同基因.
- 基因表达分析预测了多个信号通路和主调节基因的参与.
结论:
- 流行性干细胞分化是早期发育的一个关键方面.
- 分化过程是复杂的,涉及相互连接的调节器,细胞表面因子,信号通路和荷尔蒙.
- 成年大鼠的基底细胞代表了干细胞群,可以分化为其他类型的脊髓细胞.
相关概念视频
Cellular Differentiation
2.5K
How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
A zygote is a...
2.5K
Spermatogenesis
101.7K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
101.7K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K
Development of the Sexual Organs in the Embryo and Fetus
356
Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...
356
Diversity in Cell Signaling Responses
6.3K
The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity.
Graded and Abrupt Responses
Some signaling systems generate...
Graded and Abrupt Responses
Some signaling systems generate...
6.3K
iPS Cell Differentiation
2.6K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
2.6K

