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Deng D, Qu Y, Sun L, Jia L, Bu J, Ye M, Chen Z, Geng Y, Zhou S, Fang B. Fuyuan Xingnao Decoction Promotes Angiogenesis Through the Rab1/AT1R Pathway in Diabetes Mellitus Complicated With Cerebral Infarction. Front Pharmacol 2021; 12:616165. [PMID: 33679398 PMCID: PMC7925884 DOI: 10.3389/fphar.2021.616165] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 01/07/2021] [Indexed: 12/12/2022] Open
Abstract
Fuyuan Xingnao decoction (FYXN), a traditional Chinese formula comprised of seven herbs, has been utilized to treat diabetes mellitus complicated with cerebral infarction (DMCI) for years. Yet, its protective and regulatory mechanism is poorly understood. The aim of the study is to investigate the effects of FYXN on DMCI in vitro and in vivo, as well as its mechanism in angiogenesis. For in vivo experiments, FYXN was administered to DMCI rats with streptozotocin (STZ) injection-induced diabetes. Then middle cerebral artery occlusion (MCAO) was conducted and the cerebral cortex sections of the rats were obtained. The ultrastructure of cerebral microvessels and new vessel density of ischemic penumbra were evaluated by the transmission electron microscopy (TEM) assay and immunohistochemistry, respectively. Protein and mRNA expression levels of Rab1/AT1R in cortex were assayed by Western blotting and real-time fluorescence quantitative real-time polymerase chain reaction (RT-qPCR). In vitro, FYXN serum was produced in rats on the fourth day 2 h after the last FYXN administration. Green fluorescence was observed after transfection with lentivirus packaged Rab1-WT or siRNA for 24 h. The activity of brain microvascular endothelial cells (BMECs) treated with sera from these rats was tested by MTT assay and Transwell assays, respectively. The expression of AT1R on the cell membrane and endoplasmic reticulum of BMECs was evaluated by immunofluorescence staining. Protein expression levels of signaling molecules in the Rab1/AT1R pathways were also detected. Results showed that in vivo, FYXN treatment significantly intensified CD31 staining in the cortical areas and enhanced the mRNA and protein levels of AT1R, Ang II, Rab1a, Rab1b and VEGF expression in ischemic cerebral cortex tissues. In vitro, the expression levels of AT1R, Ang II, Rab1a, Rab1b and VEGF in the cerebral infarction model group were significantly higher than those in the control group, with further increases after administration of FYXN drug serum. FYXN promoted the proliferation and migration of BMECs by activating the Rab1/AT1R signaling pathway. In conclusion, FYXN exerts a protective effect against DMCI by promoting angiogenesis via the Rab1/AT1R pathway, which provides strong evidence for the therapeutic effect of FYXN on DMCI.
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Affiliation(s)
- Dong Deng
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yao Qu
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihua Sun
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Liyang Jia
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianhong Bu
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Internal Medicine, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, China
| | - Miaoqing Ye
- Department of Liver Disease, Shaanxi Provincial Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Zhenyi Chen
- Department of Cardiology, the Second Clinical Medical College, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Yun Geng
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuang Zhou
- Department of Acupuncture and Massage College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Bangjiang Fang
- Department of Emergency Medicine, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Deng Y, Chen D, Gao F, Lv H, Zhang G, Sun X, Liu L, Mo D, Ma N, Song L, Huo X, Yan T, Zhang J, Luo Y, Miao Z. Silencing of Long Non-coding RNA GAS5 Suppresses Neuron Cell Apoptosis and Nerve Injury in Ischemic Stroke Through Inhibiting DNMT3B-Dependent MAP4K4 Methylation. Transl Stroke Res 2020; 11:950-966. [PMID: 31997156 DOI: 10.1007/s12975-019-00770-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022]
Abstract
Ischemic stroke is associated with various physiological and pathological processes including neuronal apoptosis. Growth-arrest-specific transcript 5 (GAS5), a long non-coding RNA (lncRNA), has been recently reported to affect ischemic stroke-induced neuron apoptosis, while its mechanisms remain largely undefined. Through in silico analysis, GAS5 was predicted to interact with the promoter of MAP4K4. The aim of the present study was therefore to investigate the possible role of GAS5 in the progression of ischemic stroke via regulation of mitogen-activated protein kinase kinase kinase kinase 4 (MAP4K4) methylation. The expression of MAP4K4 was found to be lowly expressed in the clinical samples collected from 55 patients. MAP4K4 was suggested to be methylated in an in vitro model of oxygen-glucose deprivation (OGD)-treated mouse primary cortical neurons, while its overexpression could inhibit OGD-induced neuronal apoptosis. A series of dual-luciferase reporter, RIP, RNA pull-down, ChIP MSP, and BSP assays confirmed that GAS5 significantly induced MAP4K4 methylation and downregulated MAP4K4 expression through the recruitment of DNA methyltransferase 3B (DNMT3B). An in vivo ischemic stroke model was developed using middle cerebral artery occlusion (MCAO). Upregulation of GAS5 promoted OGD-induced neuronal apoptosis in the in vitro model and increased cerebral infarction size and neurological score in the in vivo model by reducing MAP4K4 expression. Collectively, the present study highlights that silencing GAS5 may inhibit neuronal apoptosis and improve neurological function in ischemic stroke by suppressing DNMT3B-mediated MAP4K4 methylation, which contributes to better understanding of the pathologies of ischemic stroke and development of novel therapeutic options for this disease.
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Affiliation(s)
- Yiming Deng
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Duanduan Chen
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Feng Gao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Hong Lv
- Departments of Clinical Laboratory, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
| | - Guojun Zhang
- Departments of Clinical Laboratory, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
| | - Xuan Sun
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Lian Liu
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Dapeng Mo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Ning Ma
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Ligang Song
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Xiaochuan Huo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Tianyi Yan
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Jingbo Zhang
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China
| | - Yun Luo
- Departments of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, People's Republic of China.
| | - Zhongrong Miao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People's Republic of China.
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, People's Republic of China.
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, 100069, People's Republic of China.
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