4.6

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2.2

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  • ISSN 1674-8301
  • CN 32-1810/R
Wei Li, Wu Di, Lijuan Hua, Bingrong Zhou, Ze Guo, Dan Luo. UVB suppresses PTEN expression by upregulating miR-141 in HaCaT cells[J]. The Journal of Biomedical Research, 2011, 25(2): 135-140. DOI: 10.1016/S1674-8301(11)60017-1
Citation: Wei Li, Wu Di, Lijuan Hua, Bingrong Zhou, Ze Guo, Dan Luo. UVB suppresses PTEN expression by upregulating miR-141 in HaCaT cells[J]. The Journal of Biomedical Research, 2011, 25(2): 135-140. DOI: 10.1016/S1674-8301(11)60017-1

UVB suppresses PTEN expression by upregulating miR-141 in HaCaT cells

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This study was supported by the National Natural Science Foundation of China (No. 30771946 and No. 81000700).

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  • MicroRNAs (miRNAs) are 21 to 24 nucleotide, non-coding RNA molecules that post-transcriptionally regulate the expression of target genes. Ultraviolet B (UVB) radiation has been shown to inhibit phosphatase and tensin homolog deleted on chromosome 10 (PTEN) expression in HaCaT cells through an unknown mechanism. In this study, we investigated whether miR-141 can regulate UVB exposure-mediated inhibition of PTEN expression. Real-time RT-PCR, annexin V/fluorescein isothiocyanate staining, Western blotting and anti-miRNA oligonucle-otide transfection were employed in this study. We found that upregulation of miR-141 expression after UVB ir-radiation was inversely correlated with PTEN expression levels in HaCaT cells. Furthermore, miR-141 expression increased apoptosis, while anti-miR-141 partly restored PTEN expression and reversed the pro-apoptosis effect of UVB. UVB suppresses the expression of PTEN by upregulating miR-141 in HaCaT cells. Therefore, miR-141 is a potential gene therapy target for UVB-induced photodamage.
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