title: [Proteoglycans of L6J1 myoblast extracellular matrix. Characteristics and effect on myoblast adhesion].
abstract: Proteoglycans were isolated from extracellular matrix of L6J1 rat myoblasts and their influence on myoblast adhesion was studied. Proteoglycan digestion with chondroitinase AC and heparinase III degrading the polysaccharide moieties revealed that chondroitin sulfate proteoglycans are the main class of myoblast extracellular matrix proteoglycans. Electrophoresis of enzymatically processed proteoglycans was used to examine their core proteins. Myoblast adhesion was suppressed by proteoglycans or the mixture of proteoglycans and fibronectin/extracellular matrix. When being processed with chondroitinase AC the combined substrate of fibronectin and proteoglycans lost the capability of myoblast adhesion suppression. Thus, as a result of presented work the proteoglycans of L6J1 rat myoblast extracellular matrix were isolated and purified. The main class of proteoglycans was chondroitin sulphate proteoglycans. Isolated proteoglycans suppressed myoblast adhesion and this effect was mediated by polysaccharide moieties of proteoglycans.
authors.forename: I I
authors.initials: II
authors.lastname: Ermakova
authors.forename: T A
authors.initials: TA
authors.lastname: Chertkova
authors.forename: A L
authors.initials: AL
authors.lastname: Mokrushin
authors.forename: A V
authors.initials: AV
authors.lastname: Romaniuk
authors.forename: G A
authors.initials: GA
authors.lastname: Sakuta
authors.forename: V I
authors.initials: VI
authors.lastname: Morozov
mesh_terms: D000818:Animals; D002448:Cell Adhesion / Q000187:drug effects / Q000502:physiology; D002460:Cell Line; D011508:Chondroitin Sulfate Proteoglycans / Q000302:isolation & purification / Q000494:pharmacology / Q000502:physiology*; D002810:Chondroitinases and Chondroitin Lyases / Q000737:chemistry; D005109:Extracellular Matrix / Q000737:chemistry; D005353:Fibronectins / Q000502:physiology; D032446:Myoblasts / Q000737:chemistry / Q000187:drug effects / Q000502:physiology*; D011133:Polysaccharide-Lyases / Q000737:chemistry; D051381:Rats
chemical_list: D011508:Chondroitin Sulfate Proteoglycans; D005353:Fibronectins; D002810:Chondroitinases and Chondroitin Lyases; D011133:Polysaccharide-Lyases; C021349:heparitinsulfate lyase