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Journal of Cell Science, Vol 97, Issue 4 659-667, Copyright © 1990 by Company of Biologists

JOURNAL ARTICLES

Segregation of the myogenic cell lineage in mouse muscle development

GE Jones, SJ Murphy and DJ Watt
Division of Biomedical Sciences, King's College, London, UK.

With increasing interest in the idea of therapeutic implantation of normal muscle precursor cells into muscle lacking the protein product of the dystrophin gene, it has become important to obtain enriched populations of myogenic cells from biopsied muscle sources. Myogenic cells for implantation are highly favoured as they are the only cells that will fuse readily with host muscle fibres into which they are implanted, thus carrying the introduced gene into the target fibre with the maximum of efficiency. Second, myogenic cells appear less immunogenic than those of a non-myogenic nature; and third, the use of mononuclear myogenic cells may permit the introduction of multiple copies of a deficient gene into the patient's own cells. From a mixed population of cells obtained by the enzymic disaggregation of neonatal murine muscle we have selected, utilising a modification of the panning technique, for a cell population rich in myogenic cells. Segregation was accomplished using Mab H28, an antibody to the mouse neuronal cell adhesion molecule (N-CAM), derived from mouse/rat hybridoma cells. Following incubation with Mab H28, disaggregated muscle was applied to the surface of a bacteriological grade dish previously coated with anti-rat immunoglobulin. Cells segregated into two populations; those bearing N-CAM, and hence labelled with Mab H28, were adherent to the dish, whereas those not expressing N-CAM remained in suspension. Use of this technique, which involves minimal cell loss, resulted in the segregation of prefusion myogenic cells together with fibroblasts in the 'non-adherent' fraction, whereas cells in the adherent fraction consisted of a highly enriched population of actively dividing myogenic cells.


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© The Company of Biologists Ltd 1990