ISSN:
0002-9106
Schlagwort(e):
Cadherins
;
Integrins
;
N-CAM
;
Fibronectin
;
Myoblasts
;
Myogenesis
;
Life and Medical Sciences
;
Cell & Developmental Biology
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Medizin
Notizen:
N-cadherin, N-CAM, fibronectin, and β1-integrins have been implicated in the control of myoblast fusion to form multinucleate myotubes, a critical step in the terminal differentiation of skeletal muscle. We have analyzed the temporal pattern of expression of mRNA transcripts encoding these adhesion molecules during the terminal differentiation of C2 mouse myoblasts. The accumulation of mRNA transcripts encoding N-cadherin, N-CAM, fibronectin, β5-integrin, and β1-integrin subunits was developmentally, but not coordinately, regulated. N-cadherin and integrin subunit expression was maximal in profusion myoblasts and declined thereafter. In contrast, N-CAM mRNA levels were low in prefusion myoblasts, and increased coincident with the onset of terminal differentiation. Fibronectin mRNA levels were also low in myoblasts, and they did not increase until after cell fusion had occurred. The results indicate that despite their lack of coordinate regulation maximal levels of mRNA transcripts encoding adhesion molecules are present at a stage which corresponds to the peak of the active phase of myoblast fusion. © 1992 Wiley-Liss, Inc.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/aja.1001950207
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