PMID- 33859779 OWN - NLM STAT- MEDLINE DCOM- 20210609 LR - 20230330 IS - 1942-0994 (Electronic) IS - 1942-0900 (Print) IS - 1942-0994 (Linking) VI - 2021 DP - 2021 TI - Increase in Blood-Brain Barrier (BBB) Permeability Is Regulated by MMP3 via the ERK Signaling Pathway. PG - 6655122 LID - 10.1155/2021/6655122 [doi] LID - 6655122 AB - BACKGROUND: The blood-brain barrier (BBB) regulates the exchange of molecules between the brain and peripheral blood and is composed primarily of microvascular endothelial cells (BMVECs), which form the lining of cerebral blood vessels and are linked via tight junctions (TJs). The BBB is regulated by components of the extracellular matrix (ECM), and matrix metalloproteinase 3 (MMP3) remodels the ECM's basal lamina, which forms part of the BBB. Oxidative stress is implicated in activation of MMPs and impaired BBB. Thus, we investigated whether MMP3 modulates BBB permeability. METHODS: Experiments included in vivo assessments of isoflurane anesthesia and dye extravasation from brain in wild-type (WT) and MMP3-deficient (MMP3-KO) mice, as well as in vitro assessments of the integrity of monolayers of WT and MMP3-KO BMVECs and the expression of junction proteins. RESULTS: Compared to WT mice, measurements of isoflurane usage and anesthesia induction time were higher in MMP3-KO mice and lower in WT that had been treated with MMP3 (WT+MMP3), while anesthesia emergence times were shorter in MMP3-KO mice and longer in WT+MMP3 mice than in WT. Extravasation of systemically administered dyes was also lower in MMP3-KO mouse brains and higher in WT+MMP3 mouse brains, than in the brains of WT mice. The results from both TEER and Transwell assays indicated that MMP3 deficiency (or inhibition) increased, while MMP3 upregulation reduced barrier integrity in either BMVEC or the coculture. MMP3 deficiency also increased the abundance of TJs and VE-cadherin proteins in BMVECs, and the protein abundance declined when MMP3 activity was upregulated in BMVECs, but not when the cells were treated with an inhibitor of extracellular signal related-kinase (ERK). CONCLUSION: MMP3 increases BBB permeability following the administration of isoflurane by upregulating the ERK signaling pathway, which subsequently reduces TJ and VE-cadherin proteins in BMVECs. CI - Copyright (c) 2021 Qin Zhang et al. FAU - Zhang, Qin AU - Zhang Q AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. AD - Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, China. FAU - Zheng, Mei AU - Zheng M AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Betancourt, Cristian E AU - Betancourt CE AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Liu, Lifeng AU - Liu L AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Sitikov, Albert AU - Sitikov A AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Sladojevic, Nikola AU - Sladojevic N AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Zhao, Qiong AU - Zhao Q AD - Division of Cardiology, Department of Medicine, Inova Heart and Vascular Institute, USA. FAU - Zhang, John H AU - Zhang JH AUID- ORCID: 0000-0002-4319-4285 AD - Center for Neuroscience Research, Loma Linda University, School of Medicine, USA. FAU - Liao, James K AU - Liao JK AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. FAU - Wu, Rongxue AU - Wu R AUID- ORCID: 0000-0003-4857-4655 AD - Department of Biological Sciences Division-Cardiology, University of Chicago, USA. LA - eng GR - P30 DK020595/DK/NIDDK NIH HHS/United States GR - R01 HL136962/HL/NHLBI NIH HHS/United States GR - R01 HL140114/HL/NHLBI NIH HHS/United States GR - T32 HL007381/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20210330 PL - United States TA - Oxid Med Cell Longev JT - Oxidative medicine and cellular longevity JID - 101479826 RN - 0 (Recombinant Proteins) RN - 0 (Tight Junction Proteins) RN - CYS9AKD70P (Isoflurane) RN - EC 3.4.24.17 (MMP3 protein, human) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.17 (Mmp3 protein, mouse) SB - IM MH - Animals MH - Blood-Brain Barrier/enzymology/*metabolism MH - Brain/blood supply MH - Endothelial Cells/cytology/metabolism MH - Humans MH - Isoflurane/pharmacokinetics/pharmacology MH - *MAP Kinase Signaling System MH - Matrix Metalloproteinase 3/deficiency/*metabolism/pharmacology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Recombinant Proteins/pharmacology MH - Tight Junction Proteins/metabolism PMC - PMC8026308 COIS- The authors declare that there is no conflict of interest regarding the publication of this article. EDAT- 2021/04/17 06:00 MHDA- 2021/06/10 06:00 PMCR- 2021/03/30 CRDT- 2021/04/16 06:36 PHST- 2020/10/09 00:00 [received] PHST- 2020/11/24 00:00 [revised] PHST- 2021/03/09 00:00 [accepted] PHST- 2021/04/16 06:36 [entrez] PHST- 2021/04/17 06:00 [pubmed] PHST- 2021/06/10 06:00 [medline] PHST- 2021/03/30 00:00 [pmc-release] AID - 10.1155/2021/6655122 [doi] PST - epublish SO - Oxid Med Cell Longev. 2021 Mar 30;2021:6655122. doi: 10.1155/2021/6655122. eCollection 2021.