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相关概念视频

Lineage Commitment01:21

Lineage Commitment

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Commitment is the  process whereby stem cells:
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Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

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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...
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Renewal of Intestinal Stem Cells01:23

Renewal of Intestinal Stem Cells

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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...
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相关实验视频

Updated: Jun 21, 2025

Direct Induction of Hemogenic Endothelium and Blood by Overexpression of Transcription Factors in Human Pluripotent Stem Cells
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特定阶段的GATA3诱导促进了ILC2在血统承诺后的发展.

Hiroki Furuya1, Yosuke Toda1, Arifumi Iwata2

  • 1Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan.

Nature communications
|July 5, 2024
PubMed
概括

研究人员确定了一种特定的增强器区域 (G3SE),该区域对于诱导高GATA3水平在发展中2组先天性淋巴细胞 (ILC2) 中至关重要. 这一发现澄清了ILC2开发的关键监管机制.

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Direct Lineage Reprogramming of Adult Mouse Fibroblast to Erythroid Progenitors
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相关实验视频

Last Updated: Jun 21, 2025

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Direct Lineage Reprogramming of Adult Mouse Fibroblast to Erythroid Progenitors
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Improved Generation of Induced Cardiomyocytes Using a Polycistronic Construct Expressing Optimal Ratio of Gata4, Mef2c and Tbx5
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科学领域:

  • 免疫学 免疫学 免疫学
  • 细胞生物学 细胞生物学
  • 发展生物学 发展生物学

背景情况:

  • 2组先天性淋巴细胞 (ILC2s) 是2型免疫反应的关键参与者,产生IL-4,IL-5和IL-13等细胞因子.
  • GATA3是ILC2发育的重要转录因子,但其诱导的精确时间和机制仍然不太清楚.

研究的目的:

  • 确定负责在ILC2开发过程中诱导高GATA3表达的调节元素.
  • 阐明控制ILC2前体中的GATA3诱导的特定阶段机制.

主要方法:

  • 特定于ILC2的GATA3相关联联超增强剂 (G3SE) 的识别.
  • 对缺乏G3SE的小鼠模型的分析.
  • 单细胞RNA测序和流细胞测量以评估ILC2的发育和基因表达.
  • 研究潜在的GATA3基因,如Cnot6l.

主要成果:

  • 鉴定出G3SE对于高GATA3诱导在ILC2-承诺的前体中至关重要.
  • 缺乏G3SE的小鼠在多种组织中显示出显著的ILC2缺乏.
  • 进入ILC2阶段所需的GATA3诱导机制在G3SE缺陷小鼠中晚期ILC2承诺的前体中受损.
  • Cnot6l被确定为潜在的GATA3点,参与ILC2发展.

结论:

  • 一个涉及G3SE的特定阶段的调节机制控制了ILC2发育期间的GATA3表达.
  • 这些发现为ILC2承诺和功能的转录调节提供了新的见解.
  • 该研究强调了精确的GATA3诱导对ILC2谱系承诺的重要性.