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001-es BibID:BIBFORM039242
035-os BibID:WOS:000084835200002 PMID:10672314
Első szerző:Boczán Judit (neurológus)
Cím:Differential expressions of protein kinase C isozymes during proliferation and differentiation of human skeletal muscle cells in vitro / Judit Boczan, Sándor Boros, Ferenc Mechler, László Kovacs, Tamás Bíró
Dátum:2000
ISSN:0001-6322
Megjegyzések:The mechanism of skeletal muscle regeneration in vivo can be well modeled in vitro by culturing skeletal muscle cells. In these cultures mononuclear satellite cells fuse to form polynuclear myotubes by proliferation and differentiation. The aim of this study was to determine how the different protein kinase C (PKC) isozymes were expressed during differentiation of human skeletal muscle in vitro. The expressions of desmin, used as a muscle-specific intermediate filament protein marker of differentiation, and of different PKC isozymes were detected by single and double immunohistochemical labeling, and by Western blot analysis. In skeletal muscle cells we could identify five PKC isozymes (PKC alpha, -gamma, -eta, -theta and -zeta). The expressions of PKC alpha and -zeta did not change significantly during differentiation; their levels of expression were high in the early immature cells and remained unchanged in later phases. In contrast, the expression levers of PKC gamma and -eta increased with differentiation. Furthermore, the cellular localization of PKCY markedly altered during differentiation. with a perinuclear-nuclear to cytoplasmic translocation. The change in the level of expression of PKC theta during differentiation showed different pattern; its expression was high during the early phases, but a decreased immunostaining was detected in the matured, well-differentiated myotubes. We conclude, therefore, that cultured human skeletal muscle cells possess a characteristic PKC isozyme pattern, and that the different phases of differentiation are accompanied by different expression patterns of the various isozymes. These data suggest the possible functional and differential roles of PKC isozymes in human skeletal muscle differentiation.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
egyetemen (Magyarországon) készült közlemény
Megjelenés:Acta Neuropathologica. - 99 : 2 (2000), p. 96-104. -
További szerzők:Boros Sándor Mechler Ferenc (1933-) (neurológus) Kovács László (1939-) (élettanász) Bíró Tamás (1968-) (élettanász)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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