Related Experiment Video

Updated: Jan 10, 2026

Zebrafish Model of Neuroblastoma Metastasis
05:20

Zebrafish Model of Neuroblastoma Metastasis

Published on: March 14, 2021

3.1K

The Achilles Heel of Malignant Rhabdoid Tumors

Jing Huang1, Ji Luo1

  • 1Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland. huangj3@mail.nih.gov ji.luo@nih.gov.

Cancer Research
|June 5, 2019
PubMed

Insights

Malignant rhabdoid tumors (MRTs) are deadly pediatric cancers lacking targeted therapies. Researchers identified MDM2 and MDM4 inhibition as a promising therapeutic strategy for MRTs by targeting the p53 pathway.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Malignant rhabdoid tumors (MRTs) are aggressive pediatric cancers.
  • Mutations in the SMARCB1 gene are a hallmark of MRTs.
  • Current therapeutic options for MRTs are limited, with no targeted treatments available.

Purpose of the Study:

  • To identify novel therapeutic targets for malignant rhabdoid tumors (MRTs).
  • To investigate the role of MDM2 and MDM4 as potential drug targets in MRTs.
  • To explore the sensitivity of MRT cells to MDM2 and MDM4 inhibition.

Main Methods:

  • Genome-wide RNA interference (RNAi) screening.
  • CRISPR screening to identify drug targets.
  • Analysis of the p53 pathway and its regulation in MRT cells.

Main Results:

  • MDM2 and MDM4 were identified as potential therapeutic targets for MRTs.
  • SMARCB1's role in regulating p53-dependent apoptotic genes was elucidated.
  • MRTs with an intact p53 pathway demonstrated sensitivity to MDM2 and MDM4 inhibition.

Conclusions:

  • Inhibition of MDM2 and MDM4 presents a promising therapeutic strategy for MRTs.
  • The findings support the potential for clinical trials of MDM2 inhibitors in MRT patients.
  • Targeting the p53 pathway offers a novel approach for treating these rare pediatric tumors.

More Related Videos

Tumorsphere Derivation and Treatment from Primary Tumor Cells Isolated from Mouse Rhabdomyosarcomas09:21

Tumorsphere Derivation and Treatment from Primary Tumor Cells Isolated from Mouse Rhabdomyosarcomas

Published on: September 13, 2019

7.5K
Identification and Characterization of Metastatic Factors by Gene Transfer into the Novel RIP-Tag; RIP-tva Murine Model09:03

Identification and Characterization of Metastatic Factors by Gene Transfer into the Novel RIP-Tag; RIP-tva Murine Model

Published on: October 16, 2017

9.1K

Related Concept Videos

The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.6K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
6.1K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.1K
Small GTPases - Ras and Rho01:24

Small GTPases - Ras and Rho

Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
Three regulatory proteins control their activity:
5.2K