Myofibroblasts from Scleroderma Skin Synthesize Elevated Levels of Collagen and Tissue Inhibitor of Metalloproteinase (TIMP-1) with Two Forms of TIMP-1 (*)

Myofibroblasts from Scleroderma Skin Synthesize Elevated Levels of Collagen and Tissue Inhibitor of Metalloproteinase (TIMP-1) with Two Forms of TIMP-1 (*)
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硬皮病皮肤的肌成纤维细胞合成水平升高的胶原蛋白和金属蛋白酶组织抑制剂 (TIMP-1) 以及两种形式的 TIMP-1 (*)

DOI:
--
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发表时间:
1995
影响因子:
4.8
通讯作者:
Maureen D. Mayes
Maureen D. Mayes
中科院分区:
生物学2区
文献类型:
--
作者:
T. Kirk;Mina E. Mark;C. C. Chua;B. Chua;Maureen D. Mayes

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对来自硬皮病患者和正常个体的皮肤活检组织的培养成纤维细胞检测平滑肌α-肌动蛋白(肌成纤维细胞的标志物)的存在。发现8个硬皮病细胞系中有6个α-肌动蛋白阳性率为50%或更高,而4个正常细胞系中有3个和1个来自硬皮病患者未受影响皮肤的细胞系的α-肌动蛋白阳性率低于10%。来自受影响的硬皮病皮肤的培养的成纤维细胞主要是肌成纤维细胞,这是在硬皮病组织的活组织检查中发现的表型,以及其他纤维化病变、伤口愈合和肿瘤结缔组织增生。这些数据支持这样的假设,即某些活化的成纤维细胞表型在硬皮病中占主导地位。活化的成纤维细胞是肌成纤维细胞。在α-肌动蛋白阳性(肌成纤维细胞富集)培养物中,胶原和TIMP(金属蛋白酶组织抑制剂)均升高。此外,肌成纤维细胞富集的培养物在SDS-聚丙烯酰胺凝胶电泳上显示出更突出的TIMP双重带模式。
Cultured fibroblasts derived from skin biopsies from scleroderma patients and normal individuals were examined for the presence of smooth muscle α-actin, a marker for myofibroblasts. Six of eight scleroderma cell lines were found to be 50% or more positive for α-actin while three of four normal lines and one cell line derived from unaffected skin of a scleroderma patient were less than 10% positive. The cultured fibroblasts from affected scleroderma skin were largely myofibroblasts, a phenotype found in biopsies of scleroderma tissue, as well as other fibrotic lesions, wound healing, and tumor desmoplasia. The data support the hypothesis that a certain activated fibroblast phenotype predominates in scleroderma. The activated fibroblast is the myofibroblast. Both collagen and TIMP (tissue inhibitor of metalloproteinases) were elevated in the α-actin positive (myofibroblast enriched) cultures. In addition, the myofibroblast-enriched cultures displayed a more prominent TIMP doublet band pattern on SDS-polyacrylamide gel electrophoresis.
DOI: --
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长期暴露于单核细胞的可溶性介质后,正常成纤维细胞中硬皮病样表型的持续存在。
DOI: 10.1002/art.1780290108
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DOI: 10.1111/1523-1747.ep12480289
发表时间: 1991-08-01
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DOI: --
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期刊: The Journal of biological chemistry
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