Recombinant connective tissue growth factor modulates porcine skin fibroblast gene expression

Wound Repair and Regeneration : Official Publication of the Wound Healing Society [and] the European Tissue Repair Society
Jian Fei WangD A Hart

Abstract

Connective tissue growth factor (CTGF) is a 38 Kda cysteine-rich, heparin-binding peptide that has been implicated in several normal and abnormal physiological processes. CTGF has been shown to be induced by transforming growth factor-beta. Previous studies in our pig model of skin wound healing showed a coordinate expression of transforming growth factor-beta and CTGF during the healing process. To better understand the function of CTGF during wound healing, normal porcine fibroblasts were isolated from skin samples from SPF Yorkshire pigs. At fourth passage the cells were cultured in Dulbecco's modified Eagle's medium supplemented with fetal calf serum and at 80% confluence the medium was replaced with supplemented serum-free medium. After a further 24 hours, cells were treated with 0, 10, 25, 50, 100, and 500 ng/ml of 38 Kda or 16-20 Kda (C-terminal truncated form) recombinant expressed human CTGF for 24 hours or treated with 100 ng/ml for 0, 12, 24, and 48 hours. Subsequently, CTGF effects on cell DNA synthesis and mRNA levels for a subset of relevant molecules were assessed. The results showed that in cells treated with 38 Kda rhCTGF, mRNA levels for types I and III collagen, fibromodulin, and basic fibroblast growth facto...Continue Reading

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