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https://hdl.handle.net/2440/23241
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Type: | Journal article |
Title: | Expression of hyaluronan synthases and hyaluronidases in the MG63 osteoblast cell line |
Author: | Adams, J. Sander, G. Byers, S. |
Citation: | Matrix Biology, 2006; 25(1):40-46 |
Publisher: | Elsevier Science BV |
Issue Date: | 2006 |
ISSN: | 0945-053X 1569-1802 |
Statement of Responsibility: | Adams Julian Robert James, Sander Guy and Byers Sharon |
Abstract: | The expression of hyaluronan synthases (1, 2 and 3) and hyaluronidases (1, 2, 3, 4 and PH20) was examined in the MG63 osteoblast cell line induced to mineralize in vitro and compared to the rate of glycosaminoglycan production. Real-time PCR analysis demonstrated a 13-fold decrease in hyaluronan synthase 3 expression in mineralising MG63 cells; no significant change in hyaluronan synthase 2 expression in mineralising cells and hyaluronah synthase 1 was not expressed. In mineralising MG63 cells a 62-fold increase in hyaluronidase 2, a 13-fold increase in hyaluronidase 3, and a 3-fold increase in hyaluronidase 4 expression were observed when compared to non-mineralising cells; hyaluronidase 1 and PH20 expression was not detected. After 5 weeks in mineralising culture conditions a 2-fold increase in total 3H-glucosamine incorporation was observed in cells when compared to 24 h or 5 week control cultures. This was made up of a 5-fold decrease in hyaluronan production, a 2-fold increase in chondroitin sulphate/dermatan sulphate and a 10-fold increase in 3H-glucosamine incorporation into the non-glycosaminoglycan fraction. A 3-fold increase in 35SO4 incorporation into chondroitin sulphate/dermatan sulphate was also observed. Thus there is co-ordinate expression of genes that control hyaluronan metabolism such that there is a general decrease in the expression of hyaluronan synthases, an increase in the expression of hyaluronidases and a corresponding decrease in hyaluronan production by mineralising MG63 cells. |
Keywords: | Hyaluronan Hyaluronidase Hyaluronan synthase Mineralisation Osteoblast |
DOI: | 10.1016/j.matbio.2005.08.007 |
Description (link): | http://cat.inist.fr/?aModele=afficheN&cpsidt=17540508 |
Published version: | http://dx.doi.org/10.1016/j.matbio.2005.08.007 |
Appears in Collections: | Aurora harvest 6 Paediatrics publications |
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