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人类介质细胞向骨架血统的结合是独立于它们的形态遗传能力
Jessica Cristina Marín-Llera1, Damián García-García1, Estefania Garay-Pacheco1
1Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacan 04510, Mexico.
World journal of stem cells
|August 7, 2023
概括
介酶体 stromal 细胞 (MSCs) 表达骨分化标志物,但未能在体内形成复杂的结构. 它们的内在特性,而不仅仅是血统承诺,限制了它们产生骨元素的能力.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 组织工程是组织工程.
背景情况:
- 介质细胞 stromal 细胞 (MSCs) 与胚胎介质皮细胞具有共同的特征,包括分化潜力成骨质性,肌体性和肌体性血统.
- 虽然MSCs在体外有差异化,但它们在体内没有证明自己组织成复杂的骨结构或结缔组织.
- 这项研究调查了MSC表达骨架血统标记是否足以使MSCs在体内形成骨架元素.
研究的目的:
- 评估人类胎盘 (PL) 和带血液 (UCB) 的潜力,使MSCs能够分化为骨系.
- 评估MSCs在体内使用重组四肢 (RL) 系统生成复杂骨结构的能力.
- 了解MSCs在胚胎环境中形成功能骨组织的局限性.
主要方法:
- 使用了复合四肢 (RL) 系统,涉及解离再聚合的人类PL和UCBMSC.
- 共同培养的MSCs在从早期的四肢芽的外皮覆盖内.
- 将复合RL移植到捐赠小胚胎中,以评估体内分化和对胚胎信号的反应模式.
主要成果:
- 人类的PL-MSCs和UCB-MSCs表达了原体,骨原体和原体标记物,但未能在体内产生复杂的骨结构.
- MSCs 很早就表现出对 chondrogenic 血统的承诺,其中 UCB-MSC 倾向于骨质生和肌质生命运.
- 骨系结合的能力因MSC来源而异,并且独立于体内形成复杂组织的能力.
结论:
- 在MSC中,骨分化标志物的表达不足以在体内产生复杂的骨结构.
- 多种多样性细胞的内在生物特征,而不是仅仅是血统的承诺,似乎限制了它们的体内骨发育.
- 需要进一步的研究来评估MSC的生物学方面及其对体内形态遗传信号的反应.
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