Expression and analysis of miRNA in retinal tissue of oxygen-induced retinopathy mice
10.3760/cma.j.cn511434-20191105-00361
- VernacularTitle:氧诱导视网膜病变小鼠视网膜组织中miRNA的表达及分析
- Author:
Boshi LIU
1
;
Lijie DONG
;
Liangyu HUANG
;
Xinyuan HUANG
;
Xun LIU
;
Qiong WANG
;
Yaru HONG
;
Jindong HAN
;
Xiaorong LI
Author Information
1. 天津医科大学眼科医院、眼视光学院、眼科研究所 天津市视网膜功能与疾病重点实验室天津市眼科学与视觉科学国际联合研究中心 300384
- From:
Chinese Journal of Ocular Fundus Diseases
2020;36(7):544-550
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the expression of miRNA involved in regulating retinal neovascularizationin in retinal tissue of oxygen-induced retinopathy (OIR) mice.Methods:Eighty healthy C57BL/6J mice were randomly divided into control group and OIR group at postnatal day 7(P7). Control group were not received any treatment and then exposed to room air. The OIR group was exposed to (75±2)% oxygen and then under room air at P12. Mice of all groups were euthanized at P17. Retinal neovasculation (RNV) was evaluated by counting the number of pre-retinal neovascular cells and analysing no perfusion area by immunofluorescent staining of the mouse retina.Total RNA was extracted from retinal tissue,and miRNA microarrays was performed to identify differentially expressed miRNA in the two groups. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed differential microRNA.Results:Compared with the control group,the retinal neovascular tufts and the no perfusion area were both significantly smaller than those in OIR group. The number of pre-retinal neovascular cell nuclei in retinas from control group were obviously lower than those in the retinas from OIR group ( t=9.025, P<0.05). MiRNA microarray analysis showed that 54 miRNA in OIR group showed statistically different expression in control group, 47 miRNA were up-regulated and 7 miRNA were down-regulated. The results of PCR were consistent with the trend of microarray. In GO analysis, 1112 items were significantly different ( P<0.05), and 65 items were significantly different in KEGG analysis of expression profile ( P<0.05). Conclusions:The miRNA expression in retinal tissue of OIR mice is different from that of normal mice, and these miRNA may be involved in the development of RNV. There are 54 miRNA expression differences in retinal tissue of OIR compared with normal mouse retinal tissue.
