相关实验视频

Updated: Jan 7, 2026

The C. elegans Intestine As a Model for Intercellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis at the Single-cell Level: Labeling by Antibody Staining, RNAi Loss-of-function Analy

The C. elegans Intestine As a Model for Intercellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis at the Single-cell Level: Labeling by Antibody Staining, RNAi Loss-of-function Analy

Published on: October 3, 2017

在C. elegans肠道发育过程中,扩散和分化程序的部分合

Joris Dieng¹, Harpreet Singh¹, Grégoire Michaux¹

¹Univ Rennes, CNRS, IGDR (Institut de Génétique et de Développement de Rennes), UMR 6290, F-35000 Rennes, France.

Development (Cambridge, England)

|December 31, 2025

概括

细胞增殖和分化是联系在一起的,但不是完全结合在一起的. 在C. elegans肠道中延迟细胞循环停止影响微菌的发展,而分化因子控制细胞循环停止,揭示了相互相互作用.

科学领域:

发展生物学发展生物学
细胞生物学细胞生物学
遗传学遗传学是一个

背景情况:

细胞的增殖和分化对生物体的发展至关重要.
细胞周期停止通常在终端分化之前发生,这表明协调.
C. elegans 肠道为研究刻板印象的发育过程提供了一个模型.

研究的目的:

研究细胞增殖和分化程序之间的系统合.
确定控制扩散是否影响差异化,反之亦然.
阐明在C. elegans中控制这些过程的分子机制.

主要方法:

利用C. elegans肠道模型进行发育研究.
操纵细胞周期停止时间以观察分化效应.
研究了分化因子 (ELT-2,ELT-7) 在细胞周期控制中的作用.
分析了细胞循环调节剂 (cyclin B1, CKI-1) 和霍克斯蛋白 (PHP-3).

主要成果:

延迟细胞循环停止对肠道分化影响最小,但特别延迟了晚期微子成分的积累.
发现区分因子ELT-2和ELT-7可以控制后部肠细胞的细胞循环停止.
在没有ELT-2/ELT-7的情况下发生了超数分裂,这与改变的环林B1/CKI-1表达有关,并且依赖于PHP-3.
证明了扩散和差异化之间的相互相互作用.

结论:

细胞增殖和分化表现出相互相互作用,但只是部分合.
额外的机制可能会确保精确的时间控制这些过程.
研究结果提供了对发育事件复杂调节的见解.

关键词:

在CKI-1中使用.细胞循环的细胞周期在ELT-2中使用ELT-2.霍克斯 (HOX) 是一个假象.微小菌是一种微小菌.在PHP-3中使用PHP-3.

更多相关视频

Computational Analysis of the Caenorhabditis elegans Germline to Study the Distribution of Nuclei, Proteins, and the Cytoskeleton

Computational Analysis of the Caenorhabditis elegans Germline to Study the Distribution of Nuclei, Proteins, and the Cytoskeleton

Published on: April 19, 2018

3D Culturing of Organoids from the Intestinal Villi Epithelium Undergoing Dedifferentiation

3D Culturing of Organoids from the Intestinal Villi Epithelium Undergoing Dedifferentiation

Published on: April 1, 2021

相关概念视频

Renewal of Intestinal Stem Cells

Renewal of Intestinal Stem Cells

The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the...

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...

Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal

Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal

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.