Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia.
King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
Mol Neurobiol. 2018 Jun;55(6):5377-5392. doi: 10.1007/s12035-017-0771-4. Epub 2017 Sep 21.
Astrocytes perform essential functions in the preservation of neural tissue. For this reason, these cells can respond with changes in gene expression, hypertrophy, and proliferation upon a traumatic brain injury event (TBI). Different therapeutic strategies may be focused on preserving astrocyte functions and favor a non-generalized and non-sustained protective response over time post-injury. A recent strategy has been the use of the conditioned medium of human adipose mesenchymal stem cells (CM-hMSCA) as a therapeutic strategy for the treatment of various neuropathologies. However, although there is a lot of information about its effect on neuronal protection, studies on astrocytes are scarce and its specific action in glial cells is not well explored. In the present study, the effects of CM-hMSCA on human astrocytes subjected to scratch assay were assessed. Our findings indicated that CM-hMSCA improved cell viability, reduced nuclear fragmentation, and preserved mitochondrial membrane potential. These effects were accompanied by morphological changes and an increased polarity index thus reflecting the ability of astrocytes to migrate to the wound stimulated by CM-hMSCA. In conclusion, CM-hMSCA may be considered as a promising therapeutic strategy for the protection of astrocyte function in brain pathologies.
星形胶质细胞在神经组织的保护中发挥着重要作用。因此,这些细胞在创伤性脑损伤事件(TBI)后,可以通过基因表达变化、肥大和增殖来做出反应。不同的治疗策略可能集中在保持星形胶质细胞功能上,并有利于在损伤后随着时间的推移产生非普遍性和非持续性的保护反应。最近的一种策略是使用人脂肪间充质干细胞的条件培养基(CM-hMSCA)作为治疗各种神经病理学的一种治疗策略。然而,尽管有很多关于它对神经元保护作用的信息,但关于星形胶质细胞的研究很少,其在神经胶质细胞中的特定作用也尚未得到充分探索。在本研究中,评估了 CM-hMSCA 对划痕实验中人类星形胶质细胞的影响。我们的研究结果表明,CM-hMSCA 提高了细胞活力,减少了核碎片,并维持了线粒体膜电位。这些作用伴随着形态变化和增加的极性指数,从而反映了星形胶质细胞在 CM-hMSCA 刺激下迁移到伤口的能力。总之,CM-hMSCA 可以被认为是一种有前途的治疗策略,用于保护脑病理学中星形胶质细胞的功能。
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