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Updated: Dec 25, 2025

An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
MicroRNA-212 suppresses cell proliferation in nasopharyngeal carcinoma by targeting ELF3
Yaojie Kang1, Yanfei Cui2, Ming Tan2
1Department of Otolaryngology-Head and Neck Surgery, Central Hospital of Enshi Autonomous Prefecture, Enshi, Hubei 445000, P.R. China.
Abstract:
Nasopharyngeal carcinoma (NPC) is an epithelial malignancy of the head and neck that is prevalent in China. The present study investigated the molecular mechanisms of microRNA-212 (miR-212) and E74-like factor 3 (ELF3) in NPC cell lines and tissues. Using reverse transcription-quantitative PCR, the present study identified that miR-212 expression was downregulated in NPC cell lines and tissues. Furthermore, an elevated expression level of miR-212 was revealed to inhibit NPC cell proliferation, as determined using a cell counting kit-8 assay in vitro. ELF3 was identified as a direct target of miR-212 in NPC cells by a luciferase reporter assay. Additionally, the expression levels of miR-212 and ELF3 were negatively correlated in NPC tissues. The expression levels of ELF3 and miR-212 were associated with metastasis and TNM stage in patients with NPC. In summary, the present study indicated that miR-212 was downregulated in NPC and suppressed cell proliferation. This suggested that the miR-212/ELF3 axis may serve as a novel target for the diagnosis and treatment of NPC.
Insights
MicroRNA-212 (miR-212) is downregulated in nasopharyngeal carcinoma (NPC), inhibiting its proliferation. The miR-212/ELF3 axis presents a potential diagnostic and therapeutic target for NPC.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Nasopharyngeal carcinoma (NPC) is a prevalent head and neck cancer in China.
- Understanding the molecular mechanisms of NPC is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the role of microRNA-212 (miR-212) and its target E74-like factor 3 (ELF3) in nasopharyngeal carcinoma.
- To explore the potential of the miR-212/ELF3 axis as a diagnostic and therapeutic target for NPC.
Main Methods:
- Reverse transcription-quantitative PCR (RT-qPCR) to assess miR-212 expression.
- Cell Counting Kit-8 (CCK-8) assay to evaluate NPC cell proliferation.
- Luciferase reporter assay to confirm ELF3 as a direct target of miR-212.
Main Results:
- miR-212 expression was significantly downregulated in NPC cell lines and tissues.
- Elevated miR-212 expression inhibited NPC cell proliferation in vitro.
- ELF3 was identified as a direct target of miR-212, with inverse correlation in NPC tissues.
- miR-212 and ELF3 expression levels correlated with NPC metastasis and TNM stage.
Conclusions:
- miR-212 is downregulated in NPC and suppresses tumor cell proliferation.
- The miR-212/ELF3 axis represents a promising novel target for NPC diagnosis and treatment.
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