Related Experiment Video

Updated: May 10, 2026

In Vitro Cultivation Techniques for Modeling Liver Organogenesis, Building Assembloids, and Designing Synthetic Tissues using Human Cell Lines
08:50

In Vitro Cultivation Techniques for Modeling Liver Organogenesis, Building Assembloids, and Designing Synthetic Tissues using Human Cell Lines

Published on: April 18, 2025

miR-451 inhibits cell proliferation in human hepatocellular carcinoma through direct suppression of IKK-β

He-Ping Li1, Xian-Cheng Zeng, Bing Zhang

  • 1Department of Interventional Radiology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, China.

Carcinogenesis
|June 7, 2013
PubMed

Insights

MicroRNA-451 (miR-451) is downregulated in hepatocellular carcinoma (HCC), inhibiting tumor growth. Restoring miR-451 suppresses HCC proliferation by targeting the NF-κB pathway, offering potential new therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Hepatology

Background:

  • Nuclear factor-kappa B (NF-κB) is overactivated in hepatocellular carcinoma (HCC) and drives its development.
  • MicroRNAs (miRNAs) are increasingly recognized for their role in HCC progression.
  • Understanding miRNA regulation of the NF-κB pathway is crucial for identifying novel HCC therapeutic targets.

Purpose of the Study:

  • To investigate the role of miR-451 in hepatocellular carcinoma (HCC).
  • To elucidate the mechanism by which miR-451 affects HCC cell tumorigenicity and the NF-κB pathway.
  • To explore the therapeutic potential of modulating miR-451 in HCC.

Main Methods:

  • Quantitative real-time PCR to assess miR-451 expression in HCC tissues and cells.
  • In vitro and in vivo assays to evaluate the effect of miR-451 on HCC cell tumorigenicity.
  • Western blotting to analyze the expression of cyclin D1, c-Myc, and NF-κB pathway components.
  • Luciferase reporter assays to confirm direct targeting of IKBKB by miR-451.

Main Results:

  • miR-451 expression was significantly downregulated in HCC tissues and cells compared to normal controls.
  • Upregulation of miR-451 inhibited HCC cell proliferation and tumorigenicity, while downregulation promoted it.
  • miR-451 upregulation decreased the expression of cyclin D1 and c-Myc, key regulators of the G1/S transition.
  • miR-451 directly targeted the 3'-untranslated region of IKBKB, inhibiting the NF-κB pathway activation.

Conclusions:

  • Downregulation of miR-451 contributes to HCC cell proliferation by promoting the NF-κB pathway.
  • miR-451 acts as a tumor suppressor in HCC.
  • Modulating miR-451 represents a promising therapeutic strategy for hepatocellular carcinoma.

More Related Videos

In Vivo Inhibition of MicroRNA to Decrease Tumor Growth in Mice07:02

In Vivo Inhibition of MicroRNA to Decrease Tumor Growth in Mice

Published on: August 23, 2019

Related Concept Videos

Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
Inhibition of CDK Activity02:34

Inhibition of CDK Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...