PMID- 34549680 OWN - NLM STAT- MEDLINE DCOM- 20220223 LR - 20220428 IS - 1532-2513 (Electronic) IS - 0892-3973 (Linking) VI - 43 IP - 6 DP - 2021 Dec TI - Effects of stem cell-derived exosomes on neuronal apoptosis and inflammatory cytokines in rats with cerebral ischemia-reperfusion injury via PI3K/AKT pathway-mediated mitochondrial apoptosis. PG - 731-740 LID - 10.1080/08923973.2021.1976794 [doi] AB - OBJECTIVE: This study aimed to investigate the effects of stem cell-derived exosomes (SC-Exos) on learning, memory, and neuronal apoptosis in rats with cerebral ischemia-reperfusion injury and to determine whether SC-Exos exert their effects via phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT) pathway-mediated mitochondrial pathways of apoptosis. MATERIALS AND METHODS: Eighty rats were randomly allocated to control, model, SC-Exos, and PI3K inhibitor groups. A model of focal cerebral ischemia-reperfusion was established using the improved Longa method. Expression of interleukin-1alpha (IL-1alpha), interleukin-2 (IL-2), tumor necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma) were compared in the brains and serum of each group. The expressions of Bcl-2, Bax, cleaved-caspase-3, cleaved-caspase-9, cytochrome C (CytC), PI3K, and AKT-related genes and proteins were evaluated by real-time quantitative polymerase chain reaction and western blotting. RESULTS: The SC-Exos-group exhibited more novel entries, less latency for the novel arm, and fewer entries into the starting arm and other arms than the model group (p<.05). Lower expression of the inflammatory cytokines IL-1alpha, IL-2, and TNF-alpha and higher expression of IFN-gamma were observed in the SC-Exos group than in the model group. TdT-mediated dUTP nick end labeling (TUNEL) assay showed that lower neural cell apoptosis rate and expression of Bax, cleaved-caspase-3, cleaved-caspase-9, CytC, PI3K, and AKT mRNA and proteins and higher expression of Bcl-2 mRNA and protein were observed in the SC-Exos group than in the model group (p<.05). CONCLUSIONS: SC-Exos can significantly ameliorate brain injury caused by cerebral ischemia-reperfusion. The mechanism may be a novel therapeutic target for ischemia-reperfusion injury. FAU - Zhang, Ying AU - Zhang Y AUID- ORCID: 0000-0002-5939-0440 AD - Department of Nuclear Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. FAU - Yu, Jun AU - Yu J AD - Department of Nuclear Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. FAU - Liu, Jing AU - Liu J AD - Department of Nuclear Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. FAU - Liu, Hongbiao AU - Liu H AD - Department of Nuclear Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. FAU - Li, Jing AU - Li J AD - Department of Nuclear Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China. LA - eng PT - Journal Article DEP - 20210922 PL - England TA - Immunopharmacol Immunotoxicol JT - Immunopharmacology and immunotoxicology JID - 8800150 RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - Animals MH - Apoptosis/physiology MH - Brain Ischemia/*metabolism/therapy MH - Cells, Cultured MH - Cytokines/antagonists & inhibitors/*metabolism MH - Exosomes/*transplantation MH - Humans MH - Inflammation Mediators/antagonists & inhibitors/metabolism MH - Male MH - Mitochondria/metabolism MH - Neurons/metabolism MH - Phosphatidylinositol 3-Kinases/*metabolism MH - Proto-Oncogene Proteins c-akt/antagonists & inhibitors/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reperfusion Injury/*metabolism/therapy MH - Stem Cell Transplantation/*methods OTO - NOTNLM OT - Phosphatidylinositol-3-kinase/protein kinase B OT - inflammatory cytokine OT - neuronal apoptosis OT - novel therapeutic target OT - stem cell-derived exosome cerebral ischemia-reperfusion injury EDAT- 2021/09/23 06:00 MHDA- 2022/02/24 06:00 CRDT- 2021/09/22 08:42 PHST- 2021/09/23 06:00 [pubmed] PHST- 2022/02/24 06:00 [medline] PHST- 2021/09/22 08:42 [entrez] AID - 10.1080/08923973.2021.1976794 [doi] PST - ppublish SO - Immunopharmacol Immunotoxicol. 2021 Dec;43(6):731-740. doi: 10.1080/08923973.2021.1976794. Epub 2021 Sep 22.