Quantitative proteomic analysis of human umbilical cord mesenchymal stem cells with pigment epithelium-derived factor gene modification mediated by lentivirus

Authors: Jiang Yilin,  Zhang Xiaomin,  Shao Xianfeng,  An Jinying,  Su Lin,  Jiang Yuanfeng,  Li Xiaorong
DOI: 10.3760/cma.j.cn115989-20200609-00408
Published 2021-10-10
Cite asChin J Exp Ophthalmol, 2021, 39(10): 845-851.

Abstract

Objective

To investigate the protein expression changes of human umbilical cord mesenchymal stem cells (hUCMSCs) modified with pigment epithelium-derived factor (PEDF) gene mediated by lentivirus.

Methods

The hUCMSCs were divided into the control group and experimental group.Cells in the control group were normal hUCMSCs and the cells in experimental group were hUCMSCs with PEDF modification.The proteins from the two groups were collected and processed by FASP method.Samples were fractionated by liquid chromatography and analyzed by tandem mass spectrometry, and SWATH mode was applied.Differential protein analysis, Gene Ontology (GO) analysis and Reactome pathway enrichment analysis were performed.

Results

A total of 5 361 quantified proteins were detected in this experiment, of which 432 proteins were differentially expressed (fold change>1.5, P<0.05). There were 219 of the 432 proteins up-regulated, including serpin family F member 1 (SERPINF1) (PEDF), DEAD-box helicase 59 (DDX59) and thrombospondin 1 (THBS1), etc., whereas 213 proteins were down-regulated, including collagen type Ⅰ alpha 1 (COL1A1), COL18A1, etc.GO analysis indicated that the differential proteins were mainly involved in fibrinolysis, extracellular structure organization, regulation of transporter activity, biosynthetic process of secondary alcohol and cholesterol, coenzyme metabolic process and regulation of peptidase activity, etc.Reactome pathway analysis showed that the differential proteins were mostly involved in regulation of insulin like growth factor (IGF) transport and uptake by IGF binding protein, post-translational protein phosphorylation, extracellular matrix organization, metabolism of steroids.

Conclusions

After gene modification with PEDF mediated by lentivirus, the expression of many proteins in hUCMSCs were changed.PEDF gene modification can alter the structure of extracellular matrix and regulate the expression of proteins associated with cell proliferation, self-renewal and multipotency.

Key words:

Pigment epithelium-derived factor; Umbilical cord; Mesenchymal stem cells; Proteomics; Neovascular eye disease; Therapy

Contributor Information

Jiang Yilin

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

Zhang Xiaomin

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

Shao Xianfeng

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

An Jinying

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

Su Lin

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

Jiang Yuanfeng

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

Li Xiaorong

Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China

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Updated: October 11, 2021 — 2:05 am