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THE ROLE OF CONNECTIVE TISSUE GROWTH FACTOR, TRANSFORMING GROWTH FACTOR Β1 AND SMAD SIGNALING PATHWAY IN cornea wound healing

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Chinese Medical Journal 2006年第1期119卷 57-62页

作者： WU Xin-yi YANG Yong-mei GUO Hui CHANG Yuan Department of Ophthalmology Qilu Hospital Shandong University Ji＇nan 250012 China

The cornea is a highly specialized and unique organ in the human body. Its main function is to project light from the external environment onto the retina, and it has a specific transparency to perform its function properly. The transparency and integrity of the cornea is of vital importance. The corneal wound, especially laceration deep to Bowman＇s membrane and stroma, which will inevitably cause scar formation, may cause the degeneration or even loss of sight.

关键词： cornea wound healing connective tissue growth factor, transforming growth factorβ1 Smad signafing pathway

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The anti-scarring effect of corneal stromal stem cell therapy is mediated by transforming growth factorβ3

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Eye and Vision 2020年第1期7卷 512-525页

作者： Lin Weng James L.Funderburgh Irona Khandaker Moira L.Geary Tianbing Yang Rohan Basu Martha L.Funderburgh Yiqin Du Gary Hin-Fai Yam Department of Ophthalmology University of Pittsburgh School of medicine203 Lothrop StreetPittsburghPA 15213USA Shanghai Lanhe Optometry and Ophthalmology Clinic Shanghai 200032People’s Republic of China

Background:corneal stromal stem cells(CSSC)reduce corneal inflammation,prevent fibrotic scarring,and regenerate transparent stromal tissue in injured *** effects rely on factors produced by CSSC to block the fibrotic gene *** study investigated the mechanism of the scar-free regeneration ***:Primary human CSSC(hCSSC)from donor corneal rims were cultivated to passage 3 and co-cultured with mouse macrophage RAW264.7 cells induced to M1 pro-inflammatory phenotype by treatment with interferonγand lipopolysaccharides,or to M2 anti-inflammatory phenotype by interleukin-4,in a Transwell *** timecourse expression of human transforming growth factorβ3(hTGFβ3)and hTGFβ1 were examined by immunofluorescence and ***β3 knockdown for>70%in hCSSC[hCSSC-TGFβ3(si)]was achieved by small interfering RNA ***ïve CSSC and hCSSC-TGFβ3(si)were transplanted in a fibrin gel to mouse corneas,respectively,after wounding by stromal *** clarity and the expression of mouse inflammatory and fibrosis genes were ***:hTGFβ3 was upregulated by hCSSC when co-cultured with RAW cells under M1 *** of hCSSC to wounded mouse corneas showed significant upregulation of hTGFβ3 at days 1 and 3 post-injury,along with the reduced expression of mouse inflammatory genes(CD80,C-X-C motif chemokine ligand 5,lipocalin 2,plasminogen activator urokinase receptor,pro-platelet basic protein,and secreted phosphoprotein 1).By day 14,hCSSC treatment significantly reduced the expression of fibrotic and scar tissue genes(fibronectin,hyaluronan synthase 2,Secreted protein acidic and cysteine rich,tenascin C,collagen 3a1 andα-smooth muscle actin),and the injured corneas remained ***,hCSSC-TGFβ3(si)lost these anti-inflammatory and anti-scarring functions,and the wounded corneas showed intense ***:This study has demonstrated that the corneal regenerative effect of hCSSC is mediated by TGFβ3,inducing a s

关键词： cornea wound healing corneal stromal stem cells TGFβ3 Inflammation Fibrosis

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