PMID- 38069179 OWN - NLM STAT- MEDLINE DCOM- 20231216 LR - 20231216 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 23 DP - 2023 Nov 28 TI - Endogenous Extracellular Vesicles Participate in Brain Remodeling after Ischemic Stroke. LID - 10.3390/ijms242316857 [doi] LID - 16857 AB - Brain remodeling after an ischemic stroke represents a promising avenue for exploring the cellular mechanisms of endogenous brain repair. A deeper understanding of these mechanisms is crucial for optimizing the safety and efficacy of neuroprotective treatments for stroke patients. Here, we interrogated the role of extracellular vesicles, particularly exosomes, as potential mediators of endogenous repair within the neurovascular unit (NVU). We hypothesized that these extracellular vesicles may play a role in achieving transient stroke neuroprotection. Using the established ischemic stroke model of middle cerebral artery occlusion in adult rats, we detected a surged in the extracellular vesicle marker CD63 in the peri-infarct area that either juxtaposed or co-localized with GFAP-positive glial cells, MAP2-labeled young neurons, and VEGF-marked angiogenic cells. This novel observation that CD63 exosomes spatially and temporally approximated glial activation, neurogenesis, and angiogenesis suggests that extracellular vesicles, especially exosomes, contribute to the endogenous repair of the NVU, warranting exploration of extracellular vesicle-based stroke therapeutics. FAU - Alvarez, Mauricio Muleiro AU - Alvarez MM AUID- ORCID: 0009-0007-6628-4973 AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. FAU - Salazar, Felipe Esparza AU - Salazar FE AUID- ORCID: 0000-0003-1884-5389 AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. FAU - Rodriguez, Thomas AU - Rodriguez T AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. FAU - D'Egidio, Francesco AU - D'Egidio F AUID- ORCID: 0000-0001-9695-6274 AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. FAU - Borlongan, Cesar V AU - Borlongan CV AUID- ORCID: 0000-0002-2966-9782 AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. FAU - Lee, Jea-Young AU - Lee JY AUID- ORCID: 0000-0001-5270-3224 AD - Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA. LA - eng PT - Journal Article DEP - 20231128 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 SB - IM MH - Humans MH - Rats MH - Animals MH - *Ischemic Stroke MH - Brain MH - *Stroke MH - Infarction, Middle Cerebral Artery MH - *Extracellular Vesicles MH - *Brain Ischemia PMC - PMC10706116 OTO - NOTNLM OT - angiogenesis OT - cerebral ischemia OT - exosomes OT - glial activation OT - neurogenesis OT - neuroprotection COIS- The authors declare no conflict of interest. EDAT- 2023/12/09 10:45 MHDA- 2023/12/17 09:42 PMCR- 2023/11/28 CRDT- 2023/12/09 01:15 PHST- 2023/10/27 00:00 [received] PHST- 2023/11/21 00:00 [revised] PHST- 2023/11/26 00:00 [accepted] PHST- 2023/12/17 09:42 [medline] PHST- 2023/12/09 10:45 [pubmed] PHST- 2023/12/09 01:15 [entrez] PHST- 2023/11/28 00:00 [pmc-release] AID - ijms242316857 [pii] AID - ijms-24-16857 [pii] AID - 10.3390/ijms242316857 [doi] PST - epublish SO - Int J Mol Sci. 2023 Nov 28;24(23):16857. doi: 10.3390/ijms242316857.