Abstract:
:The expression of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) by human vascular smooth muscle cells (SMC) was monitored as a function of the phenotypic modulation in vitro. Cell phenotype was manipulated by varying serum concentration and cell density. Synthetic phenotype was characterized by a minimum expression of the contractile proteins and a maximal proliferation rate. Contractile phenotype was quiescent and expressed a maximal level of contractile proteins. Synthetic cells expressed the highest levels of both MMP-1 and TIMP-1 and displayed maximal collagenolytic activity. No significant change was detected in MMP-2 expression or catalytic activity. Enzyme immunoassays revealed that MMP-1 expression fell by 77+/-2.4-95+/-0.5%, and that of TIMP-1 by 34+/-0.5-59+/-1.9%, as the cells acquired a contractile phenotype. The level of the MMP-1/TIMP-1 complex was similarly reduced by 78+/-2.9-85+/-1.6%. These data demonstrate that the expression of MMP-1 and TIMP-1 are coordinately regulated with SMC phenotype.
journal_name
Connect Tissue Resjournal_title
Connective tissue researchauthors
Kato S,Yasukawa H,Fujii T,Yamaguchi M,Miyagi N,Okamoto K,Wada Y,Miyamoto T,Morimatsu M,Fox JCdoi
10.3109/03008200009067666keywords:
subject
Has Abstractpub_date
2000-01-01 00:00:00pages
143-53issue
2eissn
0300-8207issn
1607-8438pii
I120C009002journal_volume
41pub_type
杂志文章abstract::A transmission electron microscope study of carbonate apatite crystals isolated from bone and mineralizing tendon, as well as those produced synthetically under approximated-physiological conditions, shows that they are thin irregular shaped plates. Electron diffraction patterns of individual crystals confirm that the...
journal_title:Connective tissue research
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doi:10.3109/03008209109029158
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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更新日期:1996-01-01 00:00:00
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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doi:10.3109/03008208909103903
更新日期:1989-01-01 00:00:00
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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