Related Experiment Video
Updated: Oct 5, 2025
An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
Published on: May 21, 2019
MicroRNA-323a-3p Negatively Regulates NEK6 in Colon Adenocarcinoma Cells
Zhongshi Hong1, Zhichuan Chen1, Jianpeng Pan1
1Department of General Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou 362000, Fujian, China.
Objective:
The activity of NEK6 is enhanced in several cancer cells, including colon adenocarcinoma (COAD) cells. However, there are few reports on the microRNA (miRNA/miR) regulation of NEK6. In this study, we aimed to investigate the effects of miRNAs targeting NEK6 in COAD cells.
Methods:
Public data and online analysis sites were used to analyze the expression levels of NEK6 and miR-323a-3p in COAD tissues as well as the relationship between NEK6 or miR-323a-3p levels and survival in patients with COAD and to predict miRNAs targeting NEK6. Real-time polymerase chain reaction and western blotting were performed to determine the levels of NEK6 and miR-323a-3p in COAD cells. The targeting of NEK6 by miR-323a-3p was verified using a dual-luciferase reporter assay. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, 5-ethynyl-2'-deoxyuridine assay, propidium iodide (PI) staining, annexin V-fluorescein isothiocyanate/PI staining, and transwell assay were employed to test the proliferation, apoptosis, migration ability, and invasiveness of COAD cells.
Results:
In COAD cells, NEK6 was highly expressed, whereas miR-323a-3p was expressed at low levels and negatively regulated NEK6. Upregulating the level of miR-323a-3p impaired the proliferation, migration, and invasion of COAD cells and promoted apoptosis, whereas supplementing NEK6 alleviated the damage of the proliferation, migration, and invasion of COAD cells caused by miR-323a-3p and inhibited miR-323a-3p-induced apoptosis. These findings indicate that miR-323a-3p regulates the proliferation, migration, invasion, and apoptosis of COAD cells by targeting NEK6.
Conclusion:
miR-323a-3p downregulates NEK6 in COAD cells; this provides a novel basis for further understanding the occurrence and development of COAD.
Insights
MicroRNA miR-323a-3p targets NEK6 in colon adenocarcinoma (COAD) cells, inhibiting cancer cell proliferation, migration, and invasion. This finding offers new insights into COAD development and potential therapeutic strategies.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Nekrotizing kinase 6 (NEK6) activity is elevated in colon adenocarcinoma (COAD), a common cancer.
- The regulatory role of microRNAs (miRNAs) on NEK6 in COAD remains largely unexplored.
Purpose of the Study:
- To investigate the impact of microRNAs targeting NEK6 in COAD cells.
- To elucidate the specific role of miR-323a-3p in regulating NEK6 expression and function in COAD.
Main Methods:
- Bioinformatic analysis of public datasets for NEK6 and miR-323a-3p expression and patient survival.
- Quantitative real-time PCR and Western blotting to assess NEK6 and miR-323a-3p levels in COAD cells.
- Dual-luciferase reporter assays to confirm direct targeting of NEK6 by miR-323a-3p.
- Cell-based assays (MTT, EdU, PI staining, Annexin V/PI, Transwell) to evaluate proliferation, apoptosis, migration, and invasion.
Main Results:
- NEK6 was highly expressed, while miR-323a-3p was lowly expressed in COAD cells, with a negative correlation observed.
- Upregulation of miR-323a-3p suppressed COAD cell proliferation, migration, and invasion, while promoting apoptosis.
- Overexpression of NEK6 counteracted the inhibitory effects of miR-323a-3p on cell growth and apoptosis.
Conclusions:
- miR-323a-3p directly targets and downregulates NEK6 expression in COAD cells.
- The miR-323a-3p/NEK6 axis plays a critical role in regulating COAD cell behavior.
- This study provides a novel molecular mechanism contributing to COAD pathogenesis and suggests potential therapeutic targets.
Related Concept Videos
01:22MicroRNAs
02:23Abnormal Proliferation
01:23Negative Regulator Molecules