Related Experiment Video

Updated: Feb 7, 2026

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
09:58

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis

Published on: June 27, 2020

3.1K

The proto-oncogene function of Mdm2 in bone

David J Olivos1,2,3, Daniel S Perrien4,5, Adam Hooker2

  • 1Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana.

Journal of Cellular Biochemistry
|July 17, 2018
PubMed

Insights

Mouse double minute 2 (Mdm2) overexpression in specific cells promotes bone health. This proto-oncogene

Area of Science:

  • Oncology
  • Bone Biology
  • Genetics

Background:

  • Mouse double minute 2 (Mdm2) is a key oncoprotein with critical roles in cellular transformation.
  • Mdm2's embryonic lethality necessitates genetic modifications for in vivo study.
  • Global Mdm2 overexpression (Mdm2Tg) leads to hematopoietic neoplasms and sarcomas.

Purpose of the Study:

  • To investigate the role of Mdm2 in bone biology, specifically osteoblastogenesis and bone mass.
  • To determine if Mdm2 overexpression in osteoblasts causes malignancies.
  • To assess Mdm2's potential in reversing age-related bone loss.

Main Methods:

  • Generation of global Mdm2 transgenic mice (Mdm2Tg).
  • Creation of osteoblast-specific Mdm2 transgenic mice (Mdm2TgOb) in C57BL/6 and DBA strains.
  • Analysis of bone mineralization, osteoblastogenesis, and tumor development in transgenic mice and MG63 cells.

Main Results:

  • Global Mdm2 overexpression resulted in increased osteoblastogenesis, differentiation, and high bone mass.
  • Osteoblast-specific Mdm2 overexpression did not induce malignancies but increased bone mineralization.
  • Mdm2 overexpression ameliorated age-related bone loss in mice.

Conclusions:

  • Mdm2 plays a significant role in regulating bone mass and mineralization.
  • Targeted Mdm2 overexpression in osteoblasts enhances bone health without causing cancer.
  • Mdm2's proto-oncogenic activity is linked to maintaining bone health in adult animals.
Keywords:
bone massmouse double minute 2 (Mdm2)osteoblast (OB)

More Related Videos

Methods for Evaluating the Role of c-Fos and Dusp1 in Oncogene Dependence10:09

Methods for Evaluating the Role of c-Fos and Dusp1 in Oncogene Dependence

Published on: January 7, 2019

8.7K
Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line06:24

Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line

Published on: April 11, 2025

941

Related Concept Videos

Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
11.5K
Bone Structure01:55

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
51.8K
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.5K
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
16.6K
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
5.4K
The Hyoid Bone01:12

The Hyoid Bone

The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
5.2K