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Zhengbin Han,Qiong Wu,Qi Liu,Zhijun Huang,Wei Cui,Yijun Tian,Weili Yan 한국분자세포생물학회 2013 Molecules and cells Vol.35 No.4
Recent advances of induced pluripotent stem cells (iPSCs) has demonstrated that full development potential is closely related with the expression state of noncoding RNAs (ncRNAs) of the Dlk1-Dio3 imprinted gene cluster. However, few of them, especially the long noncoding RNAs (lncRNAs), have been characterized in detail. AK044800 is a transcript from the Dlk1-Dio3 imprinted region with little known information. This study reports original data on the expression pattern of AK044800 during embryogenesis. Expression analysis showed that AK044800 was specifically expressed in the brain at mid-gestation, E9.5 and E11.5. And at E15.5, its expression was mainly concentrated in the forebrain. In the late-gestation stage (E18.5), AK044800 expression was weaker in the brain and began to emerge in some other tissues during this period. Notably, the expression of AK044800 was biallelic in the brain, unlike other noncoding transcripts from this imprinted region. In addition, its expression was dependent on inbred mouse strains. This may be the first lncRNA that has been identified with a different expression between inbred mouse strains. This study may provide useful clues for further investigations of expression regulation and func-tions of lncRNAs of the Dlk1-Dio3 imprinted region.
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