Effect of cytoglobin overexpression on extracellular matrix component synthesis in human tenon fibroblasts.

Abstract:

BACKGROUND:Conjunctival filtering bleb scar formation is the main reason for the failure of glaucoma filtration surgery. Cytoglobin (Cygb) has been reported to play an important role in extracellular matrix (ECM) remodeling, fibrosis and tissue damage repairing. This study aimed to investigate the role of Cygb in anti-scarring during excessive conjunctival wound healing after glaucoma filtration surgery. METHODS:Cygb was overexpressed in human tenon fibroblasts (hTFs) by transfecting hTFs with lentiviral particles encoding pLenti6.2-FLAG-Cygb. Changes in the mRNA and protein levels of fibronectin, collagen I, collagen III, TGF-β1, and HIF1α were determined by RT-PCR and western blotting respectively. RESULTS:After Cygb overexpression, hTFs displayed no significant changes in visual appearance and cell counts compared to controls. Whereas, Cygb overexpression significantly decreased the mRNA and protein expression levels of collagen I, collagen III and fibronectin compared with control (p < 0.01). There was also a statistically significant decrease in the mRNA and protein levels of TGF-β1 and HIF-1α in hTFs with overexpressed Cygb compared with control group (p < 0.05). CONCLUSION:Our study provided evidence that overexpression of Cygb decreased the expression levels of fibronectin, collagen I, collagen III, TGF-β1 and HIF-1α in hTFs. Therefore, therapies targeting Cygb expression in hTFs may pave a new way for clinicians to solve the problem of post-glaucoma surgery scarring.

journal_name

Biol Res

journal_title

Biological research

authors

Wei H,Lin L,Zhang X,Feng Z,Wang Y,You Y,Wang X,Hou Y

doi

10.1186/s40659-019-0229-4

subject

Has Abstract

pub_date

2019-04-16 00:00:00

pages

23

issue

1

eissn

0716-9760

issn

0717-6287

pii

10.1186/s40659-019-0229-4

journal_volume

52

pub_type

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