PMID- 36726973 OWN - NLM STAT- MEDLINE DCOM- 20230203 LR - 20230217 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Pre-clinical efficacy evaluation of human umbilical cord mesenchymal stem cells for ischemic stroke. PG - 1095469 LID - 10.3389/fimmu.2022.1095469 [doi] LID - 1095469 AB - OBJECTIVE: This study explored the underlying therapeutic mechanism of human umbilical cord mesenchymal stem cells (hUCMSCs) for ischemic stroke (IS), and determined the optimal administration time windows and dose-effect relationship. METHODS: The levels of SDF-1alpha, IL-10, IL-6, TNF-alpha, BDNF, IL-1beta, and VEGF-A factors in serum and brain tissue lysate were measured by ELISA. The pathological status of brain tissues was evaluated by Hematoxylin-Eosin (HE) staining, and apoptosis of nerve cells was detected by tunel. The protein expression of CXCR-4, NeuN, and Nestin in the brain tissues was assessed through immunofluorescence. The balance beam, forelimb muscle strength, and limb placement were tested on MCAO rats at different time points and doses. The infarct area of the rat brain tissues was measured at the end of the experiment. RESULTS: The hUCMSC treatment during the acute phase of MCAO significantly reduced the secretion of IL-6, TNF-alpha, IL-1beta but increased IL-10 in serum, and the levels of SDF-alpha and BDNF in serum and brain tissues lysate were also increased. The pathological results showed that there were more neurons in the treatment group compared to the model group. Immunofluorescence assays showed that the expression of CXCR4、Nestin、NeuN was relatively higher than that in the model group. The d4 and d7 treatment significantly improves the motor function, promotes the recovery of forelimb muscle strength, increases the forelimb placement rate and reduces the scope of cerebral infarction, but the d14 treatment group has less therapeutic effect compared to the d4 and d7 treatment. The 2x10(7)/kg treatment showed the best therapeutic effect, followed by the 1x10(7)/kg treatment, and the worst is 0.5x10(7)/kg treatment from the test of balance beam, forelimb muscle strength, limb placement and the infarct area of the rat brain tissues. CONCLUSION: The hUCMSCs can inhibit the infiltration of inflammatory cells in the brain tissue, and promote the repair of brain tissue structure and function. Early intervention by injecting high-dose of hUCMSCs can significantly improve the recovery of neurological/motor function and reduce the size of cerebral infarction in rats. CI - Copyright (c) 2023 Shen, Wang, Zhu, Jiang, Xie, Zhang, Lv, Liu, Wang, Qi and Wang. FAU - Shen, Danpeng AU - Shen D AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Wang, Hongwei AU - Wang H AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Zhu, Hongyan AU - Zhu H AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Jiang, Cuibao AU - Jiang C AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Xie, Fan AU - Xie F AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Zhang, Hongpeng AU - Zhang H AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Lv, Qian AU - Lv Q AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Liu, Qi AU - Liu Q AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Wang, Zhiqiang AU - Wang Z AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Qi, Nianmin AU - Qi N AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. FAU - Wang, Hao AU - Wang H AD - Research and Experimental Development Department, Asia Stem Cell Regenerative Pharmaceutical Co. Ltd, Shanghai, China. LA - eng PT - Journal Article DEP - 20230113 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 130068-27-8 (Interleukin-10) RN - 0 (Nestin) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Interleukin-6) RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Humans MH - Rats MH - Animals MH - Interleukin-10/metabolism MH - *Ischemic Stroke/metabolism MH - Nestin/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Interleukin-6/metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cerebral Infarction MH - *Mesenchymal Stem Cells/metabolism MH - Umbilical Cord MH - Treatment Outcome PMC - PMC9885855 OTO - NOTNLM OT - Dose-effect relationship OT - Ischemic stroke OT - MCAO OT - Time windows OT - hUCMSCs COIS- All authors were employed by company Asia Stem Cell Regenerative Pharmaceutical Co. Ltd. EDAT- 2023/02/03 06:00 MHDA- 2023/02/04 06:00 PMCR- 2022/01/01 CRDT- 2023/02/02 02:05 PHST- 2022/11/11 00:00 [received] PHST- 2022/12/29 00:00 [accepted] PHST- 2023/02/02 02:05 [entrez] PHST- 2023/02/03 06:00 [pubmed] PHST- 2023/02/04 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2022.1095469 [doi] PST - epublish SO - Front Immunol. 2023 Jan 13;13:1095469. doi: 10.3389/fimmu.2022.1095469. eCollection 2022.