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lncRNA HCP5 acts as a ceRNA to regulate EZH2 by sponging miR‑138‑5p in cutaneous squamous cell carcinoma
- Source :
- International Journal of Oncology
- Publication Year :
- 2021
- Publisher :
- Spandidos Publications, 2021.
-
Abstract
- Long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) are essential for the progression of tumors, including cutaneous squamous cell carcinoma (CSCC). The present study aimed to examine the competing endogenous RNA (ceRNA) network in CSCC. Differentially expressed genes in CSCC were analyzed using the GSE66359 microarray data set, and the upstream miRNAs and lncRNAs were predicted using online database analysis (TargetScan 7.1, mirDIP 4.1, miRSearch V3.0, miRDB and RNA22 2.0) and were verified in clinical tissues. RNA pull-down and dual luciferase reporter gene assays were used to verify the targeting relationships among lncRNA human histocompatibility leukocyte antigen complex P5 (HCP5), miR-138-5p and enhancer of zeste homolog 2 (EZH2). Cell lines with a high and low HCP5 expression were screened, and a pcDNA-3.1-HCP5 overexpression vector, small interfering RNA against HCP5, miR-138-5p mimics and miR-138-5p inhibitors were transfected into the CSCC cells. Cell viability, invasion, migration, apoptotic rate and autophagy were evaluated. The effects of HCP5 on autophagy and apoptosis of CSCC cells were verified in vivo using Ki67 and TUNEL staining. EZH2 was demonstrated to be upregulated in CSCC cells. miR-138-5p target sequences were identified in HCP5 and EZH2. HCP5 was revealed to function as a putative ceRNA of miR-138-5p to positively regulate EZH2, and EZH2 was shown to regulate autophagy and apoptosis of CSCC cells through the STAT3/VEGFR2 pathway. HCP5 overexpression decreased miR-138-5p levels, increased EZH2 levels and promoted cell malignant behaviors and autophagy but decreased the apoptosis rate. These trends were opposite when HCP5 was silenced. In conclusion, HCP5 may competitively bind to miR-138-5p to regulate EZH2 in CSCC cells, promoting autophagy and reducing apoptosis through the STAT3/VEGFR2 pathway. This study may provide a new perspective for understanding the molecular mechanism and treatment of CSCC.
- Subjects :
- Male
autophagy
Cancer Research
Small interfering RNA
Skin Neoplasms
long non-coding RNA human histocompatibility leukocyte antigen complex P5
cutaneous squamous cell carcinoma
Cell
enhancer of zeste homolog 2
Biology
Cell Movement
Cell Line, Tumor
microRNA
medicine
Humans
Enhancer of Zeste Homolog 2 Protein
microRNA-138-5p
Cell Proliferation
Oligonucleotide Array Sequence Analysis
Oncogene
Competing endogenous RNA
Microarray analysis techniques
Gene Expression Profiling
Autophagy
STAT3/VEGFR2 pathway
Articles
Middle Aged
Cell cycle
Up-Regulation
Gene Expression Regulation, Neoplastic
MicroRNAs
medicine.anatomical_structure
Oncology
Carcinoma, Squamous Cell
Disease Progression
Cancer research
Female
RNA, Long Noncoding
Neoplasm Transplantation
Subjects
Details
- ISSN :
- 17912423 and 10196439
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- International Journal of Oncology
- Accession number :
- edsair.doi.dedup.....1f58c6b424c9e3914793cd48f5e1a750