MMP-9 Upregulation is Attenuated by the Monoclonal TLR2 Antagonist T2.5 After Oxygen-Glucose Deprivation and Reoxygenation in Rat Brain Microvascular Endothelial Cells
机构:[1]Department of Clinical Laboratory, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, No. 157, Jinbi Road, Xishan District, Kunming 650031, China云南省第一人民医院[2]Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, China云南省第一人民医院[3]Medicine Faculty of Kunming University of Science and Technology, Kunming, No. 727 Jingming Road, Chenggong District, Kunming 650093, China[4]Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, No. 295, Xichang Road, Wuhua District, Kunming 650032, China医技科室医学影像中心CT室昆明医科大学附属第一医院[5]Department of Neurology, The First People's Hospital of Yunnan Province, Kunming, China.云南省第一人民医院
Background: Blood-brain barrier (BBB) disruption plays a key role in the pathophysiology of acute ischemic stroke. Matrix metalloproteinases-2/9 (MMP-2/9) have been shown to participate in the disruption of the BBB and hemorrhagic transformation after cerebral ischemia. Toll-like receptor 2 (TLR2) may also be correlated with endothelial cell injury during ischemia-reperfusion events. However, the correlation between MMP-2/9 and TLR2 on endothelial cells after ischemia has not yet been evaluated. The aim of the study was to evaluate the impact of TLR2 and MMP-2/9 on tight junction proteins (TJs) after oxygen-glucose deprivation and reoxygenation (OGDR). Materials and methods: Rat primary brain microvascular endothelial cells (BMECs) were cultured. Quantitative real-time PCR and western blotting were used to measure the mRNA and proteins expression of TLR2 and MMP-2/-9. The protein expression of TJs was detected by western blotting and immunofluorescence. Results: MMP-9 significantly increased after OGDR. Protein and mRNA expression of TLR2 was also upregulated. However, claudin-5, occludin, collagen-IV, and ZO-1 were decreased after OGDR. When monoclonal anti-TLR2 antibody (T2.5) was added to BMECs after OGDR, MMP-9 was significantly downregulated, whereas occludin and collagen-IV had a tendency to increase. Conclusion: TLR2 antagonist T2.5 is able to downregulate the expression of MMP-9, and may constitute a therapeutic option for restoration of the BBB after OGDR.
基金:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China [81460188]; Applied Basic Research Project in Yunnan Province of China [2011FB148]; Applied Basic Combined Special Project of the Department of Science and Technology of Yunnan Province and Kunming Medical University [2013FB201]; Young and Middle-Aged Academic and Technological Leaders and Reserved Talents of Yunnan Province of China [2012HB028]; Health System Leaders of Yunnan Province of China [D-201235]; Academician Wang Long-de Workstation
第一作者机构:[1]Department of Clinical Laboratory, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, No. 157, Jinbi Road, Xishan District, Kunming 650031, China[2]Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, China[3]Medicine Faculty of Kunming University of Science and Technology, Kunming, No. 727 Jingming Road, Chenggong District, Kunming 650093, China
通讯作者:
通讯机构:[*1]Department of Neurology, The First People's Hospital of Yunnan Province, No. 157, Jinbi Road,Xishan District, Kunming 650031, China.
推荐引用方式(GB/T 7714):
Zhu Hongyan,Dai Rongrong,Fu Hao,et al.MMP-9 Upregulation is Attenuated by the Monoclonal TLR2 Antagonist T2.5 After Oxygen-Glucose Deprivation and Reoxygenation in Rat Brain Microvascular Endothelial Cells[J].JOURNAL OF STROKE & CEREBROVASCULAR DISEASES.2019,28(1):97-106.doi:10.1016/j.jstrokecerebrovasdis.2018.09.014.
APA:
Zhu, Hongyan,Dai, Rongrong,Fu, Hao&Meng, Qiang.(2019).MMP-9 Upregulation is Attenuated by the Monoclonal TLR2 Antagonist T2.5 After Oxygen-Glucose Deprivation and Reoxygenation in Rat Brain Microvascular Endothelial Cells.JOURNAL OF STROKE & CEREBROVASCULAR DISEASES,28,(1)
MLA:
Zhu, Hongyan,et al."MMP-9 Upregulation is Attenuated by the Monoclonal TLR2 Antagonist T2.5 After Oxygen-Glucose Deprivation and Reoxygenation in Rat Brain Microvascular Endothelial Cells".JOURNAL OF STROKE & CEREBROVASCULAR DISEASES 28..1(2019):97-106