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Large-scale population study of human cell lines indicates that dosage compensation is virtually complete. | LitMetric

AI Article Synopsis

Article Abstract

X chromosome inactivation in female mammals results in dosage compensation of X-linked gene products between the sexes. In humans there is evidence that a substantial proportion of genes escape from silencing. We have carried out a large-scale analysis of gene expression in lymphoblastoid cell lines from four human populations to determine the extent to which escape from X chromosome inactivation disrupts dosage compensation. We conclude that dosage compensation is virtually complete. Overall expression from the X chromosome is only slightly higher in females and can largely be accounted for by elevated female expression of approximately 5% of X-linked genes. We suggest that the potential contribution of escape from X chromosome inactivation to phenotypic differences between the sexes is more limited than previously believed.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2213701PMC
http://dx.doi.org/10.1371/journal.pgen.0040009DOI Listing

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