Proteomic analysis of extraocular muscles from patients with thyroid-associated ophthalmopathy by tandem mass tag
10.3760/cma.j.cn115989-20210802-00442
- VernacularTitle:基于串联质谱标签技术的甲状腺相关眼病眼外肌蛋白组学研究
- Author:
Qingyu MENG
1
;
Shuting LIANG
;
Yi WANG
;
Lejin WANG
;
Mingwei ZHAO
;
Xi WU
Author Information
1. 北京大学人民医院眼科 眼视光中心 眼病与视光医学研究所 视网膜脉络膜疾病诊治研究北京市重点实验室 北京大学医学部眼视光学院，北京 100044
- Keywords:
Thyroid-associated ophthalmopathy;
Strabismus, restrictive;
Proteomics;
Tandem mass tag
- From:
Chinese Journal of Experimental Ophthalmology
2022;40(11):1006-1012
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To identify the proteins differentially expressed in extraocular muscles between restrictive strabismus patients with thyroid-associated ophthalmopathy (TAO) and concomitant esotropia patients by proteomic analysis using tandem mass tag (TMT).Methods:Extraocular muscles samples from 5 restrictive strabismus patients with TAO and 5 concomitant esotropia patients were collected at Peking University People's Hospital from August 2019 to December 2020.All the patients received strabismus surgery.Differentially expressed proteins (DEPs) in extraocular muscles samples were identified by quantitative proteomic analysis and bioinformatic analysis based on TMT.Fold change≥1.2 or≤0.83 and P value<0.05 was regarded as the threshold to screen DEPs.GO annotation, KEGG pathways enrichment analysis and protein-protein interaction (PPI) network of DEPs were conducted through UniProtGOA and STRING.This study protocol was approved by the Ethics Committee of Peking University People's Hospital (No.2021PHB058-001). Results:A total of 53 DEPs were identified, 34 of which were up-regulated and 19 were down-regulated.The biological processes DEPs mainly participated included response to stimulation, multicellular organismal process, metabolism, developmental process, intracellular signal transduction, and positive regulation of biological process.DEPs were involved in pathways including focal adhesion, tight junction, regulation of action cytoskeleton, and apoptosis.Six key proteins identified using PPI network were myosin heavy chain 2, myosin heavy chain 7, myosin regulatory light chain, α-actinin-2, fibrinogen alpha chain and fibrinogen beta chain.Conclusions:There are DEPs in extraocular muscles between restrictive strabismus patients with TAO and concomitant esotropia patients.Myosin, actinin and filamin may be involved in the pathogenesis of TAO through regulation of actin cytoskeleton and focal adhesion.
