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转化生长因子-β_1影响瘢痕疙瘩成纤维细胞Smad3和Smad7 mRNA表达的调控机制(英文) 被引量:5

Modulation mechanism of effects of transforming growth factor β_1 on Smad3 mRNA and Smad7 mRNA expression of keloid fibroblasts
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摘要 目的研究转化生长因子-β1(TGF-β1)影响瘢痕疙瘩成纤维细胞(KFB)Smad3,7mRNA表达的调控机制。方法用放线菌酮(CHX)和放线菌素D预处理KFB,以分别阻断KFB内源性蛋白质的合成及mR-NA合成。采用逆转录PCR法检测瘢痕疙瘩成纤维细胞Smad3,7mRNA表达水平。结果经CHX预处理后,KFB的Smad3mRNA表达轻度上调,并完全抑制了TGF-β1对KFBSmad3mRNA的下调作用,而CHX预处理对KFB的Smad7mRNA表达及TGF-β1上调Smad7mRNA的作用并无明显影响。经放线菌素D预处理后,随TGF-β1作用时间延长,KFB的Smad3mRNA表达水平无明显下降。结论TGF-β1对KFBSmad3mRNA表达的调控过程可能还需要细胞合成其他蛋白的参与;但对Smad7mRNA表达的调控则不需要细胞合成其他蛋白参与,KFB细胞中的Smad7可能也是活化的Smads的直接靶基因。 Aim To study the modulation mechanism of Smad3 mRNA and Smad7 mRNA expression in keloid fibroblasts(KFB) by transforming growth factor β 1(TGF β 1).Methods The de novo protein synthesis and mRNA in KFB were inhibited by pretreatments with cycloheximide(CHX) and actinomycin D.The levels of Smad3 mRNA and Smad7 mRNA expression in KFB were detected by using method of RT PCR.Results Inhibition of de novo protein synthesis in KFB caused a modest increase in Smad3 mRNA levels; however,delayed down regulation by TGF β 1 was completely prevented(P< 0.01).In contrast,induction of Smad7 mRNA in these cells was unaffected by pretreatment with CHX.The levels of Smad3 mRNA with less differences in untreated and TGF β 1- treated KFB.Conclusion The modulation of Smad3 mRNA expression by TGF β 1 was required de novo protein synthesis,while rapid and transient stimulation of Smad7 mRNA did not require it,suggesting that the Smad7 gene is a direct target of receptor activated Smad signals in KFB.<P>
出处 《中国临床康复》 CSCD 2003年第17期2400-2401,共2页 Chinese Journal of Clinical Rehabilitation
关键词 转化生长因子-β1 瘢痕疙瘩 成纤维细胞 SMAD3 SMAD7 MRNA表达 transforming growth factor beta keloid fibroblasts
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  • 1Yaug L, Chai YB, Li HY, et al. The expression of Smad3 mRNA and Smad7 mRNA of TGF-β1 in keloid-derived fibroblasts. Zhongguo Linchuang Kangfu( Chin J Clin Rehabil) 2003; 7(14).
  • 2de Winter JP, Roelen BA, ten Dijke P, van der Burg B, van den Eijnden-van Raaij AJ. DPC4.(Smad4) mediates transforming growth factor-β1(TGF-β1) induced growth inhibition and transcriptional response in breast tumour cells. Oncogene 1997; 14(16): 1891 -9.
  • 3Mori Y, Chen SJ, Varga J. Modulation of endogenous Smad expression in normal skin fibroblasts by transforming growth factor-beta. Exp Cell Res 2000; 258(2) : 374 - 83.
  • 4Nakao A, Afrakhte M, Moren A, et al. Identification of Smad7, a TGF-β inducible antagonist of TGF-β signalling. Nature 1997 ; 389(6651) : 631 - 5.
  • 5Stopa M, Anhuf D,Terstegen L, Gatsios P, Gressner AM, Dooley S. Participation of Smad2, Smad3 and Smad4 in transforming growth factor beta(TGF-β1)-induced activation of Smad7. The TGF-beta response element of the promoter requires functional Smad binding element and E-box sequences for transcriptional regulation. J Biol Chem 2000; 275(38): 29308 - 17.
  • 6Nagarajan RP, Zhang J, Li W, Chen Y. Regulation of Smad7 promoter by direct association with Smad3 and Smad4. J Biol Chem 1999; 274(47): 33412 - 8.

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  • 1[6]King SR, Hickerson WL, Proctor KG. Beneficial actions of exogenous hyaluronic acid on wound healing. Surgery 1991; 109:76 -84
  • 2[7]Longas MO. Evidence for structural changes in dermatan sulfate and hyaluronic acid with aging. Carbohydr Res 1987; 159:127 -36
  • 3[8]Mast BA, Haynes JH, Krummel TM, et al. In vivo degradation of fetal wound hyaluronic acid results in increasad fibroplasia, collagen deposition, and neovascularization. Plast Reconstr Surg 1992; 89:505 -9
  • 4[9]Merkel JR, Dipaolo BR, Hallock GG, et al. Type Ⅰ and type Ⅲ collagen content of healing wounds in fetal and adult rats. Proc Soc Exp Biol Med 1988; 187:493 -7
  • 5[1]Adzick NS, Lorenz HP. Cells, matrix, growth factors, and the surgeon. The biology of scarless fetal wound repair. Ann Surg 1994; 220:10 -8
  • 6Majno G. Chronic inflammation: link with angiogenesis and wound healing. Am J Pathol 1998; 153:1035 -9
  • 7Mahtabifard A, Merritt RE, Yamada RE, et al. In vivo gene transfer of pigment epithelium-derived factor inhibits tumor growth in syngeneic murine models of thoracic malignancies. J Thorac Cardiovasc Surg 2003; 126(1): 28 -38
  • 8Meyer C, Notari L, Becerra SP. Mapping the type I collagen-binding site on pigment epithelium-derived factor. implications for its antiangiogenic activity. J Biol Chem 2002; 277(47): 45400 -7
  • 9Sambrook J, Fritsch EF, Maniatis T. Molecular cloning, a laboratory manual 2nd. New York: Cold Spring Harbor Laboratory Press 1989; 1015 -20
  • 10Polo M, Ko F, Busillo F, et al. Cytokine production in patients with hypertrophic bum scar. J Burn Care Rehabil 1997; 18:477 -82

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