Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.
Department of Gynecological Oncology, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi 330006, P.R. China.
Mol Med Rep. 2021 Jun;23(6). doi: 10.3892/mmr.2021.12097. Epub 2021 Apr 21.
Cervical cancer (CC) is the fourth most common type of cancer in women worldwide. LINC00885, a novel oncogenic type of long non‑coding RNA, is upregulated in various types of cancer, but its expression in CC remains unknown. The aim of the present study was to investigate the expression of LINC00885 in CC, and its effect on the proliferation and invasion of CC cells . The expression levels of LINC00885 and forkhead box protein 3 (FOXP3) from The Cancer Genome Atlas (TCGA) were selected to analyze the differences between CC tissues and normal cervical tissues using bioinformatics analyses. Reverse transcription‑quantitative (RT‑q)PCR was used to detect the relative expression of LINC00885 in CC cell lines, and its expression was knocked down. Cell Counting Kit‑8 assays and EdU staining were used to detect the changes in cell proliferative capacity of cells. Transwell experiments were used to examine cell invasion. Dual‑luciferase reporter and chromatin immunoprecipitation assays were performed to examine the interactions between LINC00885 and FOXP3. FOXP3 and epithelial‑mesenchymal transition (EMT)‑related proteins were detected using western blotting. The expression of LINC00885 and FOXP3 in CC tissues and CC cells was significantly higher compared with the normal cervical tissues and normal cervical epithelial cells. FOXP3 could specifically interact with the promoter of LINC00885 and activate LINC00885 transcription. Knockdown of LINC00885 and silencing of FOXP3 significantly inhibited proliferation, invasion and EMT of CC cells. Overexpression of LINC00885 reversed the inhibitory effects of FOXP3 knockdown on the proliferation and invasion of CC cells. Collectively, LINC00885 and FOXP3 may serve as biomarkers for the early diagnosis of CC and as a potential therapeutic target for reversing the malignant phenotype of CC.
宫颈癌(CC)是全球女性中第四常见的癌症类型。LINC00885 是一种新型致癌长链非编码 RNA,在多种类型的癌症中上调,但在 CC 中的表达尚不清楚。本研究旨在探讨 LINC00885 在 CC 中的表达及其对 CC 细胞增殖和侵袭的影响。采用生物信息学分析方法,从癌症基因组图谱(TCGA)中选择 LINC00885 和叉头框蛋白 3(FOXP3)的表达水平,分析 CC 组织与正常宫颈组织之间的差异。采用逆转录-定量(RT-q)PCR 检测 CC 细胞系中 LINC00885 的相对表达,并敲低其表达。采用细胞计数试剂盒-8 检测和 EdU 染色检测细胞增殖能力的变化。采用 Transwell 实验检测细胞侵袭能力。采用双荧光素酶报告基因和染色质免疫沉淀实验检测 LINC00885 和 FOXP3 之间的相互作用。采用 Western blot 检测 FOXP3 和上皮-间质转化(EMT)相关蛋白的表达。CC 组织和 CC 细胞中 LINC00885 和 FOXP3 的表达明显高于正常宫颈组织和正常宫颈上皮细胞。FOXP3 可以特异性地与 LINC00885 的启动子相互作用并激活 LINC00885 的转录。敲低 LINC00885 和沉默 FOXP3 显著抑制 CC 细胞的增殖、侵袭和 EMT。过表达 LINC00885 逆转了 FOXP3 敲低对 CC 细胞增殖和侵袭的抑制作用。总之,LINC00885 和 FOXP3 可能作为 CC 早期诊断的生物标志物,并作为逆转 CC 恶性表型的潜在治疗靶点。