title: Characterization of myogenic cell membrane: spontaneous formation of heterokaryotic myotubes between two different kinds of myoblasts.
abstract: In a previous study, it has been shown that presumptive mouse C2 myoblast cells are strongly resistant to HVJ (hemaglutinating virus of Japan, Sendai virus)-mediated cell fusion, but do become capable of fusion upon differentiation. Quail myoblasts transformed with a temperature-sensitive mutant of Rous sarcoma virus (QM-RSV cells) also become more sensitive to HVJ-mediated cell fusion during differentiation. Investigations were undertaken to see whether heterokaryotic myotubes were formed spontaneously by co-culture of two different kinds of myogenic cells, QM-RSV cells and C2 cells. When both cells were committed to myotube formation, they spontaneously fused without HVJ on co-culture. On the other hand, when both or one of the cells were in the presumptive state, heterokaryons were not formed by co-culturing. Furthermore, committed QM-RSV cells did not fuse with non-myogenic cells. These results indicate that the membranes of myogenic cells change to become capable of fusion for myotube formation during differentiation.
authors.affiliation: Institute of Molecular and Cellular Biology for Pharmaceutical Sciences, Kyoto Pharmaceutical University, 1, Shichonocho, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan.
authors.forename: E
authors.initials: E
authors.lastname: Hirayama
authors.forename: M
authors.initials: M
authors.lastname: Nakanishi
authors.forename: J
authors.initials: J
authors.lastname: Kim
mesh_terms: D016475:3T3 Cells; D000818:Animals; D002454:Cell Differentiation / Q000502:physiology; D002462:Cell Membrane / Q000502:physiology; D002642:Chick Embryo; D018920:Coculture Techniques; D008561:Membrane Fusion / Q000502:physiology*; D051379:Mice; D018485:Muscle Fibers, Skeletal / Q000166:cytology*; D011784:Quail; D013234:Stem Cells / Q000166:cytology