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Enhancement of Angiogenesis and Neurogenesis by Intracerebroventricular Injection of Secretome From Human Embryonic Stem Cell-Derived Mesenchymal Stem Cells in Ischemic Stroke Model Publisher Pubmed



Asgari Taei A1 ; Nasoohi S2 ; Hassanzadeh G1, 3 ; Kadivar M4 ; Dargahi L5 ; Farahmandfar M1
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Authors Affiliations
  1. 1. Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  3. 3. Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
  5. 5. Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Biomedicine and Pharmacotherapy Published:2021


Abstract

It is well accepted that the success of mesenchymal stem cells (MSCs) therapy against experimental stroke is mainly due to cellular paracrine manners rather than to replace lost tissue per se. Given such “bystander” effects, cell-free therapeutics manifest as a promising approach in regenerative medicine. Here we aimed at evaluating the effect of conditioned medium (CM) derived from human embryonic MSCs (hESC-MSC) on the neurological deficit, neurogenesis, and angiogenesis in experimental stroke. Adult male Wistar rats subjected to middle cerebral artery occlusion (MCAO), were treated with intracerebroventricular CM either one time (1 h post MCAO) or three times (1, 24, and 48 h post MCAO). Motor performance was assessed by the cylinder test on days 3 and 7. Cerebral samples were obtained for infarct size and molecular analysis on day 7 post-injury. Neurogenesis was evaluated by probing Nestin, Ki67, DCX, and Reelin transcripts and protein levels in the striatum, cortex, subventricular zone, and corpus callosum. The mRNA and protein expression of CD31 were also assessed in the striatum and cortical region to estimate angiogenesis post MCAO. Our findings demonstrate that CM treatment could significantly ameliorate neurological deficits and infarct volume in MCAO rats. Furthermore, ischemic stroke was associated with higher levels of neurogenesis and angiogenesis markers. Following treatment with CM, these markers were further potentiated in the brain regions. This study suggests that the therapeutic benefits of CM obtained from hESC-MSCs at least partly are mediated through improved neurogenesis and angiogenesis to accelerate the recovery of cerebral ischemia insult. © 2021
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Maryam Farahmandfar (4)
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