Abstract:
:Cultured arterial smooth muscle cells incorporate [35S]sulfate into the extracellular chondroitin sulfate/dermatan sulfate containing proteoglycans at a higher rate in the phase of logarithmic growth than do non-dividing cells. The cell growth-dependent decrease in 35S incorporation with increasing cell density is accompanied by a decrease in the activity of chondroitin sulfate-synthesizing enzymes. The specific activity of xylosyl transferase, N-acetylgalactosaminyl transferase I and chondroitin sulfotransferase declines as the cells proceed from low to high densities. The corresponding correlation coefficients are 0.86, 0.91 and 0.89. The ratio of C-6OH/C-4OH sulfation of chondroitin shows a cell proliferation-dependent decrease indicating an inverse correlation of chondroitin 6-sulfotransferase and chondroitin 4-sulfotransferase activity. The observed changes in the expression of enzyme activities are thought to have some implications in the pathogenesis of arteriosclerosis, the initial stages of which are characterized by proliferation of arterial smooth muscle cells.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Hollmann J,Thiel J,Schmidt A,Buddecke Edoi
10.1016/0014-4827(86)90188-6subject
Has Abstractpub_date
1986-12-01 00:00:00pages
484-94issue
2eissn
0014-4827issn
1090-2422pii
0014-4827(86)90188-6journal_volume
167pub_type
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