NMDA receptor-mediated calcium influx plays an essential role in myoblast fusion
In: FEBS letters, Jg. 578 (2004-06-15), Heft 1-2
Online
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Zugriff:
Ca2+ influx is known to be prerequisite for myoblast fusion during skeletal muscle differentiation. Here, we show that the N-methyl-D-aspartate (NMDA) receptor is involved in the Ca2+ influx of C2C12 myoblasts. NMDA receptor (NR) 1 and NR2D were expressed in the myoblasts during muscle differentiation. Using Ca2+ imaging analysis, Ca2+ influx through NRs was directly measured at a single-cell level. l-Glutamate increased myoblast fusion as well as intracellular Ca2+ levels, and both effects were completely blocked by MK801, a selective antagonist of NRs. Furthermore, treatment with the Ca2+ ionophore A23187 recovered MK801-mediated inhibition of myoblast fusion. These results suggest that the NRs may play an important role in myoblast fusion by mediating Ca2+ influx.
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NMDA receptor-mediated calcium influx plays an essential role in myoblast fusion
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Autor/in / Beteiligte Person: | Kim, Kyungjin ; Jae Yong Park ; Kun Ho Lee |
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Zeitschrift: | FEBS letters, Jg. 578 (2004-06-15), Heft 1-2 |
Veröffentlichung: | 2004 |
Medientyp: | unknown |
ISSN: | 0014-5793 (print) |
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