PMID- 38388375 OWN - NLM STAT- Publisher LR - 20240222 IS - 1559-7016 (Electronic) IS - 0271-678X (Linking) DP - 2024 Feb 22 TI - Hemorrhagic stroke-induced subtype of inflammatory reactive astrocytes disrupts blood-brain barrier. PG - 271678X241235008 LID - 10.1177/0271678X241235008 [doi] AB - Astrocytes undergo disease-specific transcriptomic changes upon brain injury. However, phenotypic changes of astrocytes and their functions remain unclear after hemorrhagic stroke. Here we reported hemorrhagic stroke induced a group of inflammatory reactive astrocytes with high expression of Gfap and Vimentin, as well as inflammation-related genes lipocalin-2 (Lcn2), Complement component 3 (C3), and Serpina3n. In addition, we demonstrated that depletion of microglia but not macrophages inhibited the expression of inflammation-related genes in inflammatory reactive astrocytes. RNA sequencing showed that blood-brain barrier (BBB) disruption-related gene matrix metalloproteinase-3 (MMP3) was highly upregulated in inflammatory reactive astrocytes. Pharmacological inhibition of MMP3 in astrocytes or specific deletion of astrocytic MMP3 reduced BBB disruption and improved neurological outcomes of hemorrhagic stroke mice. Our study demonstrated that hemorrhagic stroke induced a group of inflammatory reactive astrocytes that were actively involved in disrupting BBB through MMP3, highlighting a specific group of inflammatory reactive astrocytes as a critical driver for BBB disruption in neurological diseases. FAU - Liu, Chang AU - Liu C AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Guo, Yiyan AU - Guo Y AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Deng, Shiyu AU - Deng S AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Zhou, Shiyi AU - Zhou S AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Wu, Shengju AU - Wu S AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Chen, Tingting AU - Chen T AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Shi, Xiaojing AU - Shi X AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Mamtilahun, Muyassar AU - Mamtilahun M AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Xu, Tongtong AU - Xu T AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Liu, Ze AU - Liu Z AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Li, Hanlai AU - Li H AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Zhang, Zhijun AU - Zhang Z AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Tian, Hengli AU - Tian H AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Chung, Won-Suk AU - Chung WS AD - Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. RINGGOLD: 34968 FAU - Wang, Jixian AU - Wang J AD - Department of Rehabilitation Medicine, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. FAU - Yang, Guo-Yuan AU - Yang GY AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 FAU - Tang, Yaohui AU - Tang Y AUID- ORCID: 0000-0002-9603-2650 AD - Shanghai Jiao Tong University Affiliated Sixth People's Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China. RINGGOLD: 12474 LA - eng PT - Journal Article DEP - 20240222 PL - United States TA - J Cereb Blood Flow Metab JT - Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism JID - 8112566 SB - IM OTO - NOTNLM OT - Single-cell RNA sequencing OT - blood-brain barrier OT - hemorrhagic stroke OT - matrix metalloproteinase-3 OT - reactive astrocytes COIS- Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2024/02/23 00:42 MHDA- 2024/02/23 00:42 CRDT- 2024/02/22 23:33 PHST- 2024/02/23 00:42 [medline] PHST- 2024/02/23 00:42 [pubmed] PHST- 2024/02/22 23:33 [entrez] AID - 10.1177/0271678X241235008 [doi] PST - aheadofprint SO - J Cereb Blood Flow Metab. 2024 Feb 22:271678X241235008. doi: 10.1177/0271678X241235008.