PMID- 26012521 OWN - NLM STAT- MEDLINE DCOM- 20160809 LR - 20151009 IS - 1097-4644 (Electronic) IS - 0730-2312 (Linking) VI - 116 IP - 12 DP - 2015 Dec TI - MicroRNA-155 Regulates ROS Production, NO Generation, Apoptosis and Multiple Functions of Human Brain Microvessel Endothelial Cells Under Physiological and Pathological Conditions. PG - 2870-81 LID - 10.1002/jcb.25234 [doi] AB - The microRNA-155 (miR155) regulates various functions of cells. Dysfunction or injury of endothelial cells (ECs) plays an important role in the pathogenesis of various vascular diseases. In this study, we investigated the role and potential mechanisms of miR155 in human brain microvessel endothelial cells (HBMECs) under physiological and pathological conditions. We detected the effects of miR155 silencing on ROS production, NO generation, apoptosis and functions of HBMECs at basal and in response to oxidized low density lipoprotein (ox-LDL). Western blot and q-PCR were used for analyzing the gene expression of epidermal growth factor receptor (EGFR)/extracellular regulated protein kinases (ERK)/p38 mitogen-activated protein kinase (p38 MAPK), phosphatidylinositol-3-kinase (PI3K) and serine/threonine kinase(Akt), activated caspase-3, and intercellular adhesion molecule-1 (ICAM-1). Results showed that under both basal and challenge situations: (1) Silencing of miR155 decreased apoptosis and reactive oxygen species (ROS) production of HBMECs, whereas, promoted nitric oxide (NO) generation. (2) Silencing of miR155 increased the proliferation, migration, and tube formation ability of HBMECs, while decreased cell adhesion ability. (3) Gene expression analyses showed that EGFR/ERK/p38 MAPK and PI3K/Akt were increased and that activated caspase-3 and ICAM-1 mRNA were decreased after knockdown of miR155. In conclusion, knockdown of miR155 could modulate ROS production, NO generation, apoptosis and function of HBMECs via regulating diverse gene expression, such as caspase-3, ICAM-1 and EGFR/ERK/p38 MAPK and PI3K/Akt pathways. CI - (c) 2015 Wiley Periodicals, Inc. FAU - Liu, Yajing AU - Liu Y AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Pan, Qunwen AU - Pan Q AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Zhao, Yuhui AU - Zhao Y AD - Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio, 45435. FAU - He, Caixia AU - He C AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Bi, Kexia AU - Bi K AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Chen, Yusen AU - Chen Y AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Zhao, Bin AU - Zhao B AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. FAU - Chen, Yanfang AU - Chen Y AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. AD - Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio, 45435. FAU - Ma, Xiaotang AU - Ma X AD - Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, 524001, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Cell Biochem JT - Journal of cellular biochemistry JID - 8205768 RN - 0 (Lipoproteins, LDL) RN - 0 (MIRN155 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (Reactive Oxygen Species) RN - 0 (oxidized low density lipoprotein) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - 31C4KY9ESH (Nitric Oxide) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Apoptosis/genetics MH - Brain/*metabolism/pathology MH - Caspase 3/biosynthesis MH - Endothelial Cells/metabolism/pathology MH - Gene Expression Regulation MH - Humans MH - Intercellular Adhesion Molecule-1/biosynthesis MH - Lipoproteins, LDL/metabolism MH - MicroRNAs/antagonists & inhibitors/*genetics/metabolism MH - Microvessels/metabolism/pathology MH - Nitric Oxide/biosynthesis/*metabolism MH - Proto-Oncogene Proteins c-akt/biosynthesis MH - Reactive Oxygen Species/*metabolism MH - Signal Transduction/genetics MH - p38 Mitogen-Activated Protein Kinases/biosynthesis OTO - NOTNLM OT - CELL FUNCTION OT - HUMAN BRAIN MICROVESSEL ENDOTHELIAL CELLS OT - ISCHEMIC STROKE OT - OXIDATIVE STRESS OT - REGULATORY MECHANISM OT - miR155 EDAT- 2015/05/28 06:00 MHDA- 2016/08/10 06:00 CRDT- 2015/05/28 06:00 PHST- 2015/01/09 00:00 [received] PHST- 2015/05/14 00:00 [accepted] PHST- 2015/05/28 06:00 [entrez] PHST- 2015/05/28 06:00 [pubmed] PHST- 2016/08/10 06:00 [medline] AID - 10.1002/jcb.25234 [doi] PST - ppublish SO - J Cell Biochem. 2015 Dec;116(12):2870-81. doi: 10.1002/jcb.25234.