Modulation of collagen gene expression by cytokines: Stimulatory effect of transforming growth factor-beta 1, with divergent effects of epidermal growth factor and tumor necrosis factor-alpha on collagen type I and collagen type IV

被引:61
作者
Grande, JP [1 ]
Melder, DC [1 ]
Zinsmeister, AR [1 ]
机构
[1] MAYO CLIN & MAYO FDN,BIOSTAT SECT,ROCHESTER,MN 55905
来源
JOURNAL OF LABORATORY AND CLINICAL MEDICINE | 1997年 / 130卷 / 05期
关键词
D O I
10.1016/S0022-2143(97)90124-4
中图分类号
R446 [实验室诊断]; R-33 [实验医学、医学实验];
学科分类号
1001 ;
摘要
Transforming growth factor-beta 1 (TGF-beta 1) is well recognized as a potent mediator of both fibrillar (collagen type I) and basement membrane (collagen type IV) production. However, tissue injury is characterized by the concomitant expression of many cytokines and/or growth factors in addition to TGF-beta 1, and the ultimate extent of extracellular-matrix (ECM) deposition may reflect the interacting effects of TGF-beta 1 and these other cytokines and/or growth factors. We, therefore, sought to determine whether other cytokines and/or growth factors, known to be produced after tissue injury, am capable either alone or in combination with TGF-beta 1 of modulating collagen gene expression. Collagen type I and collagen type IV gene expression was assessed in NIH-3T3 cells, a murine fibroblast-like cell line that responds to TGF-beta 1, with increases in both collagen type I and collagen type IV production. TGF-beta 1 coordinately induced production of collagen type IV messenger ribonucleic acid (mRNA) to a level 3.8-fold above its baseline value (p < 0.001) and collagen type I mRNA to a level 2.6-fold above its baseline value (p < 0.001). Of the other cytokines and/or growth factors tested, only epidermal growth factor (EGF) had significant effects on collagen mRNA expression. We report the novel observation that EGF significantly induced collagen type IV mRNA (3.0-fold; p < 0.001) but did not alter collagen type I mRNA expression. Platelet-derived growth factor (PDGF), basic fibroblast growth factor (bFGF), tumor necrosis factor-alpha (TNF-alpha), interleukin-l (IL-l), and Insulin-like growth factor-1 (IGF-1) did not alter the expression of mRNA for collagen type IV or collagen type I. Addition of TGF-beta 1 to cytokine-and/or growth factor-treated cells increased both collagen type IV and collagen type I mRNA levels. However, collagen type IV mRNA levels were similar in cultures given TGF-beta 1 alone and cultures given TGF-beta 1 with other cytokines and/or growth factors; there were no additive, synergistic, or antagonistic effects after coadministration of TGF-beta 1 and other cytokines and/or growth factors. With regard to collagen type I mRNA expression, all cytokines and/or growth factors tested, with the exception of TNF-alpha, had no effect on collagen type I mRNA levels in TGF-beta 1-treated cultures. Importantly, TNF-alpha antagonized the stimulatory effect of TGF-beta 1 on collagen type I mRNA levels. These observations support a dominant role for TGF-beta 1 in stimulating coordinate expression of collagen type I and collagen type IV mRNAs by NIH-3T3 cells; EGF and TNF-alpha are capable of inducing divergent expression of the genes for these two types of collagen.
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页码:476 / 486
页数:11
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