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- W3007456467 abstract "Long noncoding RNAs (lncRNAs) are critical regulators of gene transcription. Our previous results have demonstrated that iron deficiency accelerates intervertebral disc degeneration (IDD) by affecting the stability of the DNA polymerase epsilon (Polε) complex. Here, we discovered that the novel lncRNA lncPolE functions as a negative regulator of Polε. The expression of lncPolE in IDD tissues was upregulated compared to its expression in healthy control tissues, and this was in contrast to the PolE1 expression levels. The increased lncPolE level was significantly correlated with the severity of IDD. Ectopic expression of lncPolE in human nucleus pulposus cells (hNPCs) was able to decrease PolE1 levels and cause apoptosis, while the specific knockdown of lncPolE in primary NP cells (pNPCs) from IDD patients can restore PolE1 levels. Interestingly, iron depletion or supplementation can affect the expression of lncPolE. Further analyses indicated that the downregulation of DNA methylation in the promoter region of lncPolE caused its overexpression. Collectively, our results suggest that the aberrant expression of lncPolE contributes to the pathogenesis of IDD by negatively regulating PolE1 in iron deficient conditions, and this may provide a new avenue to alleviate IDD progression in clinical treatment." @default.
- W3007456467 created "2020-03-06" @default.
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- W3007456467 date "2019-01-01" @default.
- W3007456467 modified "2023-09-22" @default.
- W3007456467 title "Upregulation of the long noncoding RNA lncPolE contributes to intervertebral disc degeneration by negatively regulating DNA polymerase epsilon." @default.
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