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SWI/SNF 亚基 ARID1B 在正常造血中对造血干细胞的再生能力很重要。

The SWI/SNF subunit ARID1B is important for regenerative ability of hematopoietic stem cells in normal hematopoiesis.

机构信息

Versiti Blood Research Institute, Milwaukee, Wisconsin, United States of America.

Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.

出版信息

PLoS One. 2024 Oct 24;19(10):e0312616. doi: 10.1371/journal.pone.0312616. eCollection 2024.

DOI:10.1371/journal.pone.0312616
PMID:39446840
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11500929/
Abstract

The Switch/Sugar non-fermenting (SWI/SNF) nucleosome remodeling complexes are essential for normal hematopoiesis. The Brg1/Brm associated factor (BAF) is a form of mammalian SWI/SNF that is distinguished by the presence of either ARID1A or ARID1B protein. In this study, we used hematopoietic specific Cre mouse models to assess the function of Arid1b in blood development. We found Arid1b loss did not affect steady state hematopoiesis or hematopoietic regeneration. Nonetheless, Arid1b null hematopoietic stem and progenitor cells have reduced ability to reconstitute hematopoietic system compared to wild type cells. Overall, our data indicate Arid1b is largely dispensable for normal hematopoiesis but impairs the regenerative ability of HSPCs.

摘要

SWI/SNF 核小体重塑复合物是正常造血所必需的。Brg1/Brm 相关因子 (BAF) 是哺乳动物 SWI/SNF 的一种形式,其特征是存在 ARID1A 或 ARID1B 蛋白。在这项研究中,我们使用造血特异性 Cre 小鼠模型来评估 Arid1b 在血液发育中的功能。我们发现 Arid1b 缺失不会影响稳态造血或造血再生。尽管如此,与野生型细胞相比,Arid1b 缺失的造血干细胞和祖细胞的重建造血系统的能力降低。总的来说,我们的数据表明 Arid1b 在很大程度上对正常造血是可有可无的,但会损害 HSPC 的再生能力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/16d9d8dd9ad3/pone.0312616.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/d5618544fd87/pone.0312616.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/e72a63966e08/pone.0312616.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/7ee9e3307498/pone.0312616.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/16d9d8dd9ad3/pone.0312616.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/d5618544fd87/pone.0312616.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/e72a63966e08/pone.0312616.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/7ee9e3307498/pone.0312616.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d67/11500929/16d9d8dd9ad3/pone.0312616.g004.jpg

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Mammalian SWI/SNF Chromatin Remodeling Complexes: Emerging Mechanisms and Therapeutic Strategies.
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Chromatin remodeling mediated by ARID1A is indispensable for normal hematopoiesis in mice.ARID1A 介导的染色质重塑对于小鼠正常造血是必不可少的。
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