例如:"lncRNA", "apoptosis", "WRKY"

Female mice lacking Ftx lncRNA exhibit impaired X-chromosome inactivation and a microphthalmia-like phenotype.

Nat Commun. 2018 Sep 20;9(1):3829
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摘要


X-chromosome inactivation (XCI) is an essential epigenetic process in female mammalian development. Although cell-based studies suggest the potential importance of the Ftx long non-protein-coding RNA (lncRNA) in XCI, its physiological roles in vivo remain unclear. Here we show that targeted deletion of X-linked mouse Ftx lncRNA causes eye abnormalities resembling human microphthalmia in a subset of females but rarely in males. This inheritance pattern cannot be explained by X-linked dominant or recessive inheritance, where males typically show a more severe phenotype than females. In Ftx-deficient mice, some X-linked genes remain active on the inactive X, suggesting that defects in random XCI in somatic cells cause a substantially female-specific phenotype. The expression level of Xist, a master regulator of XCI, is diminished in females homozygous or heterozygous for Ftx deficiency. We propose that loss-of-Ftx lncRNA abolishes gene silencing on the inactive X chromosome, leading to a female microphthalmia-like phenotype.

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