Epican, a heparan/chondroitin sulfate proteoglycan form of CD44, mediates cell-cell adhesion
| Autor: | L.C. Kugelman, John G. Haggerty, L. Hough-Monroe, Jeffrey R. Bender, Leonard M. Milstone |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Keratinocytes
animal structures viruses Gene Expression Perlecan Biology Transfection Glycosaminoglycan Mice chemistry.chemical_compound L Cells Cell Adhesion medicine Animals Humans Hyaluronic Acid Cell adhesion Cells Cultured Cell Aggregation Epidermis (botany) Cell Membrane fungi Cell Biology Adhesion Heparin Molecular biology carbohydrates (lipids) Hyaluronan Receptors Phenotype chemistry Chondroitin sulfate proteoglycan embryonic structures biology.protein Proteoglycans medicine.drug |
| Zdroj: | Journal of Cell Science. 107:3183-3190 |
| ISSN: | 1477-9137 0021-9533 |
| DOI: | 10.1242/jcs.107.11.3183 |
| Popis: | Epican is a heparan/chondroitin sulfate proteoglycan form of CD44 and is expressed on the surface of keratinocytes from the basal layer to the granular layer of the epidermis. To analyze the adhesive properties of epican apart from the influence of other adhesive molecules found on keratinocytes, mouse L cell fibroblasts were transfected with CD44Epican cDNA. The epican expressed on the surface of transfected L cells was predominantly a heparan or chondroitin sulfate proteoglycan. The CD44Epican-transfected L cells acquired: (a) a self-aggregating phenotype that required hyaluronan but was calcium-independent; and (b) a new capacity to adhere to keratinocytes, a property that was blocked by an anti-epican antibody. Both aggregation and adhesion of CD44Epican-transfected cells were completely prevented by pretreatment with hyaluronidase, but were totally restored by the addition of exogenous hyaluronan. Aggregation of transfected L cells was minimally influenced by other glycosaminoglycans, but adhesion of transfected L cells to keratinocytes was substantially inhibited by heparin. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|