In:
Stem Cells International, Hindawi Limited, Vol. 2017 ( 2017), p. 1-9
Abstract:
Three to eight percent of female carriers of Duchenne muscular dystrophy (DMD) develop dystrophic symptoms ranging from mild muscle weakness to a rapidly progressive DMD-like muscular dystrophy due to skewed inactivation of X chromosomes during early development. Here, we generated human induced pluripotent stem cells (hiPSCs) from a manifesting female carrier using retroviral or Sendai viral (SeV) vectors and determined their X-inactivation status. Although manifesting carrier-derived iPS cells showed normal expression of human embryonic stem cell markers and formed well-differentiated teratomas in vivo, many hiPS clones showed bi-allelic expression of the androgen receptor (AR) gene and loss of X-inactivation-specific transcript and trimethyl-histone H3 (Lys27) signals on X chromosomes, suggesting that both X chromosomes of the hiPS cells are in an active state. Importantly, normal dystrophin was expressed in multinucleated myotubes differentiated from a manifesting carrier of DMD-hiPS cells with XaXa pattern. AR transcripts were also equally transcribed from both alleles in induced myotubes. Our results indicated that the inactivated X chromosome in the patient’s fibroblasts was activated during reprogramming, and XCI occurred randomly during differentiation.
Type of Medium:
Online Resource
ISSN:
1687-966X
,
1687-9678
DOI:
10.1155/2017/7906843
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2017
detail.hit.zdb_id:
2573856-2
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