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Wang J, Zhao H, Fan Z, Li G, Ma Q, Tao Z, Wang R, Feng J, Luo Y. Long Noncoding RNA H19 Promotes Neuroinflammation in Ischemic Stroke by Driving Histone Deacetylase 1-Dependent M1 Microglial Polarization. Stroke 2017. [PMID: 28630232 DOI: 10.1161/strokeaha.117.017387] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND PURPOSE Long noncoding RNA H19 is repressed after birth, but can be induced by hypoxia. We aim to investigate the impact on and underlying mechanism of H19 induction after ischemic stroke. METHODS Circulating H19 levels in stroke patients and mice subjected to middle cerebral artery occlusion were assessed using real-time polymerase chain reaction. H19 siRNA and histone deacetylase 1 (HDAC1) plasmid were used to knock down H19 and overexpress HDAC1, respectively. Microglial polarization and ischemic outcomes were assessed in middle cerebral artery occlusion mice and BV2 microglial cells subjected to oxygen-glucose deprivation. RESULTS Circulating H19 levels were significantly higher in stroke patients compared with healthy controls, indicating high diagnostic sensitivity and specificity. Moreover, plasma H19 levels showed a positive correlation with National Institute of Health Stroke Scale score and tumor necrosis factor-α levels. After middle cerebral artery occlusion in mice, H19 levels increased in plasma, white blood cells, and brain. Intracerebroventricular injection of H19 siRNA reduced infarct volume and brain edema, decreased tumor necrosis factor-α and interleukin-1β levels in brain tissue and plasma, and increased plasma interleukin-10 concentrations 24 hours poststroke. Additionally, H19 knockdown attenuated brain tissue loss and neurological deficits 14 days poststroke. BV2 cell-based experiments showed that H19 knockdown blocked oxygen-glucose deprivation-driven M1 microglial polarization, decreased production of tumor necrosis factor-α and CD11b, and increased the expression of Arg-1 and CD206. Furthermore, H19 knockdown reversed oxygen-glucose deprivation-induced upregulation of HDAC1 and downregulation of acetyl-histone H3 and acetyl-histone H4. In contrast, HDAC1 overexpression negated the effects of H19 knockdown. CONCLUSIONS Our findings indicate that H19 promotes neuroinflammation by driving HDAC1-dependent M1 microglial polarization, suggesting a novel H19-based diagnosis and therapy for ischemic stroke.
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Affiliation(s)
- Jue Wang
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Haiping Zhao
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Zhibin Fan
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Guangwen Li
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Qingfeng Ma
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Zhen Tao
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Rongliang Wang
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Juan Feng
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.)
| | - Yumin Luo
- From the Cerebrovascular Diseases Research Institute and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China (J.W., H.Z., Z.F., G.L., Q.M., Z.T., R.W., Y.L.); Beijing Institute for Brain Disorders, China (Y.L.); and Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shen Yang (J.W., J.F.).
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