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人多能干细胞(PSC)来源的间充质干细胞(MSC)表现出强大的神经发生能力,这种能力会随着细胞骨架重排而增强。

Human pluripotent stem cell (PSC)-derived mesenchymal stem cells (MSCs) show potent neurogenic capacity which is enhanced with cytoskeletal rearrangement.

作者信息

Peng Kai-Yen, Lee Yu-Wei, Hsu Pei-Ju, Wang Hsiu-Huan, Wang Yun, Liou Jun-Yang, Hsu Shan-Hui, Wu Kenneth K, Yen B Linju

机构信息

Department of Life Science, National Central University, Jhongli, Taiwan.

Regenerative Medicine Research Group, Institute of Cellular and System Medicine, National Health Research Institutes (NHRI), Zhunan, Taiwan.

出版信息

Oncotarget. 2016 Jul 12;7(28):43949-43959. doi: 10.18632/oncotarget.9947.

Abstract

Mesenchymal stem cells (MSCs) are paraxial mesodermal progenitors with potent immunomodulatory properties. Reports also indicate that MSCs can undergo neural-like differentiation, offering hope for use in neurodegenerative diseases. However, ex vivo expansion of these rare somatic stem cells for clinical use leads to cellular senescence. A newer source of MSCs derived from human pluripotent stem cells (PSC) can offer the 'best-of-both-worlds' scenario, abrogating the concern of teratoma formation while preserving PSC proliferative capacity. PSC-derived MSCs (PSC-MSCs) also represent MSCs at the earliest developmental stage, and we found that these MSCs harbor stronger neuro-differentiation capacity than post-natal MSCs. PSC-MSCs express higher levels of neural stem cell (NSC)-related genes and transcription factors than adult bone marrow MSCs at baseline, and rapidly differentiate into neural-like cells when cultured in either standard neurogenic differentiation medium (NDM) or when the cytoskeletal modulator RhoA kinase (ROCK) is inhibited. Interestingly, when NDM is combined with ROCK inhibition, PSC-MSCs undergo further commitment, acquiring characteristics of post-mitotic neurons including nuclear condensation, extensive dendritic growth, and neuron-restricted marker expression including NeuN, β-III-tubulin and Doublecortin. Our data demonstrates that PSC-MSCs have potent capacity to undergo neural differentiation and also implicate the important role of the cytoskeleton in neural lineage commitment.

摘要

间充质干细胞(MSCs)是具有强大免疫调节特性的轴旁中胚层祖细胞。报告还表明,MSCs可发生神经样分化,为神经退行性疾病的治疗带来了希望。然而,这些罕见的体细胞干细胞在体外扩增以供临床使用会导致细胞衰老。源自人多能干细胞(PSC)的一种更新的MSCs来源可以提供“两全其美”的方案,消除对畸胎瘤形成的担忧,同时保留PSC的增殖能力。PSC衍生的MSCs(PSC-MSCs)也代表了最早发育阶段的MSCs,并且我们发现这些MSCs比出生后的MSCs具有更强的神经分化能力。PSC-MSCs在基线时比成人骨髓MSCs表达更高水平的神经干细胞(NSC)相关基因和转录因子,并且当在标准神经源性分化培养基(NDM)中培养或细胞骨架调节剂RhoA激酶(ROCK)被抑制时,会迅速分化为神经样细胞。有趣的是,当NDM与ROCK抑制相结合时,PSC-MSCs会进一步定向分化,获得有丝分裂后神经元的特征,包括核浓缩、广泛的树突生长以及神经元特异性标志物表达,如NeuN、β-III-微管蛋白和双皮质素。我们的数据表明,PSC-MSCs具有强大的神经分化能力,也暗示了细胞骨架在神经谱系定向分化中的重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a42f/5190070/b57ef0da55a8/oncotarget-07-43949-g001.jpg

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