MicroRNAs (miRNAs ) 是 21 ~ 24 核苷酸, post-transcriptionally 调整目标基因的表示的非编码的 RNA 分子。紫外 B (UVB ) 放射被显示了禁止在染色体 10 上删除的磷酸酶和 tensin 相当或相同的事物(PTEN ) 在通过未知机制的 HaCaT 房间的表示。在这研究,我们调查了 miR-141 是否能调整 UVB PTEN 的调停暴露的抑制表示。实时 RT-PCR,染色的 annexin V/fluorescein isothiocyanate,西方的弄污和 anti-miRNA oligonucleotide transfection 在这研究被采用。在 UVB 照耀相反地在 HaCaT 房间与 PTEN 表示层次被相关以后,我们发现了 miR-141 表示的那 upregulation。而且, miR-141 表示增加了 apoptosis,当 anti-miR-141 部分恢复了 PTEN 表示并且颠倒了 UVB 的 pro-apoptosis 效果时。UVB 在 HaCaT 房间由 upregulating miR-141 压制 PTEN 的表示。因此, miR-141 是为导致 UVB 的 photodamage 的一个潜在的基因治疗目标。
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 oligonucleotide transfection were employed in this study. We found that upregulation of miR-141 expression after UVB irradiation 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.