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. 1989 Jun;44(6):820–826.

Dystrophin analysis in clonal myoblasts derived from a Duchenne muscular dystrophy carrier.

O Hurko 1, E P Hoffman 1, L McKee 1, D R Johns 1, L M Kunkel 1
PMCID: PMC1715660  PMID: 2658563

Abstract

Clonal myogenic cell cultures were established from a potential heterozygote for a mutant Duchenne muscular dystrophy (DMD) gene who was also heterozygous for isozymes of the X-linked enzyme glucose-6-phosphate dehydrogenase. Previous tissue culture studies of this muscle donor demonstrated equal proliferative capacity of myoblasts that had lyonized either the paternal or maternal X-chromosome, indicating that mutation of the DMD gene does not affect growth of myoblasts. If this muscle donor were a gonadal mosaic, this conclusion would be incorrect. In the present study, only those myogenic colonies expressing the glucose-6-phosphate dehydrogenase-A isozyme were found to express dystrophin, indicating that this woman was indeed a heterozygote for DMD. By documenting dystrophin deficiency in a specific population of myogenic cells from this woman, we verify our previous conclusion regarding the normal proliferative capacity of DMD myoblasts. Somatic cell testing of dystrophin expression may offer an alternative to established genetic carrier tests for those women in whom deletions of the DMD are not detectable, whose pedigree structure does not permit linkage analysis, or in whom standard phenotypic analyses are ambiguous.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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