项目名称: 白细胞介素23对视网膜下纤维化形成的作用机制分析
项目编号: No.81500747
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 医药、卫生
项目作者: 杨旸
作者单位: 天津医科大学
项目金额: 18万元
中文摘要: 老年性黄斑病变(AMD)这一类视网膜下新生血管性疾病对视力造成严重损伤,尤其当此类疾病发展为纤维化瘢痕组织时,对视力造成不可逆性的视力缺损。我们使用了已经报告过的小鼠视网膜下纤维化模型,对最近颇有争议的IL23对关于视网膜下纤维化的形成作用机制进行探讨。前期工作已初步了解在p19KO(基因敲除)小鼠中视网膜下纤维化形成与对照组相比被明显抑制。在此基础上,提出以下假说:IL23可促进视网膜下纤维化形成,但IL23对视网膜下纤维化形成的增抑与建模时注入的PEC无明显关联,RPE的免疫应答反应对IL23参与视网膜下纤维化形成起到了关键作用。从而揭示了IL23对视网膜下纤维化形成的作用机制,为视网膜下纤维化的白介素靶向治疗提供了新途径。
中文关键词: 视网膜下纤维化;白细胞介素23;腹水渗出细胞;视网膜色素上皮细胞;视网膜下新生血管
英文摘要: A kind of choroidal neovascularization(CNV)degeneration, as age-related macular degeneration (AMD), is a mayjor cause of visual disability, especially formed- subretinal fibrous tissue directly related to severe visual loss. In this study, we analyzed the immunosuppressive mechanism of subretinal fibrosis about interleukins 23 (IL23) using the novel animal model recently demonstrated. Our preliminary work found that p19 deficient mice showed significant enlargement of subretinal fibrotic area as compared with wild-type (C57BL/6) mice. On this basis, we propose the following hypothesis: IL23 may have an important immunomodulatory role in the formation of experimental subretinal fibrosis. RPEs, not macrophages, are the main source of IL23- dependent-fibosis production. It reveals a possible mechanism of IL23 in subretinal fibrosis, and provide the new approaches for the possible targeting treatment of subretinal fibrosis.
英文关键词: subretinal fibrosis;interleukins 23 (IL23);peritoneal exudate cells (PEC);Retinal pigment epithelial (RPE); choroidal neovascularization(CNV)