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Annexin A1 nuclear translocation induces retinal ganglion cell apoptosis after ischemia-reperfusion injury through the p65/1L-1 beta pathway

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单位: [1]Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Dept Ophthalmol, 1095 Jiefang Ave, Wuhan 430030, Peoples R China [2]Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Neurobiol, Wuhan 430030, Peoples R China [3]Minist Educ, Key Lab Neurol Dis, Wuhan 430030, Peoples R China
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关键词: Annexin A1 Nuclear translocation Retinal ganglion cell IL-1 beta Apoptosis

摘要:
The degeneration of retinal ganglion cells (RGCs) has been identified as a major problem in glaucoma. Previous studies have indicated an association between annexin Al (ANXA1) and neuronal cell apoptosis, and RGCs apoptosis in acute ischemia-reperfusion was attributed to an increased production of IL-1 beta. We found that the expression and nuclear translocation of ANXA1 were upregulated in models of acute ischemia-reperfusion in RGCs in vivo. ANXA1 was found to have a promoting effect on the expression of IL-1 beta in primary cultured RGCs, which could be inhibited by treatment with ANXA1 shRNA or the p65 inhibitor BAY 11-7082. ANXA1 interacted with p65, and recruited it into the nucleus. Chromatin immunoprecipitation assay revealed that ANXA1 accumulated at the IL-1 beta gene promoter. The reduction of p65 nuclear translocation using a membrane permeable ANXA1 peptide containing a Ser5Ala mutation led to a decrease in the expression of IL-15, and acute ischemia-reperfusion induced RGCs apoptosis in vivo. These results indicate that in RGCs, ANXA1 increases IL-1 expression by recruiting p65 to the nucleus, which induces cell apoptosis. The obtained results may help the development of a novel treatment strategy against RGCs apoptosis in acute ischemia-reperfilsion injury.

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基金编号: 81471744 81300760 2015TS142

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出版当年[2016]版:
大类 | 2 区 生物
小类 | 2 区 生化与分子生物学 2 区 生物物理
最新[2025]版:
大类 | 2 区 生物学
小类 | 2 区 生物物理 3 区 生化与分子生物学
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出版当年[2015]版:
Q1 BIOPHYSICS Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
最新[2023]版:
Q1 BIOPHYSICS Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

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第一作者单位: [1]Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Dept Ophthalmol, 1095 Jiefang Ave, Wuhan 430030, Peoples R China
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通讯机构: [2]Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Neurobiol, Wuhan 430030, Peoples R China [3]Minist Educ, Key Lab Neurol Dis, Wuhan 430030, Peoples R China
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