Corporate Banner
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Study Identifies Potential Therapeutic Target for Incurable, Rare Type of Soft-Tissue Cancer

Published: Friday, December 27, 2013
Last Updated: Thursday, December 26, 2013
Bookmark and Share
UT Southwestern scientists study published online in Cell Reports.

A deadly, rare type of soft-tissue cancer may be completely eradicated simply by inhibiting a key protein involved in its growth, UT Southwestern Medical Center researchers report.

In the study, published online in Cell Reports, scientists found that inhibiting the action of a protein called BRD4 caused cancer cells to die in a mouse model of malignant peripheral nerve sheath tumors (MPNSTs).

“This study identifies a potential new therapeutic target to combat MPNST, an incurable type of cancer that is typically fatal,” said Dr. Lu Le, Assistant Professor of Dermatology at UT Southwestern and senior author of the study. “The findings also provide important insight into what causes these tumors to develop.”

MPNSTs are highly aggressive sarcomas that form around nerves. These tumors can develop sporadically, but about half of cases are in patients with a genetic disorder called neurofibromatosis type 1 (NF1) that affects 1 in 3,500 people. About 10 percent of NF1 patients will develop MPNST, which usually evolves from a benign but often large and disfiguring tumor called a plexiform neurofibroma.

Up to now, the preferred treatment for MPNST has been surgical removal, but that oftentimes is difficult or impossible due to the tumor’s location around nerves. Radiation and chemotherapy are other options, but their effectiveness is limited. The five-year survival rate for MPNST patients is about 50 percent.

By studying changes in cells as they evolved into cancerous MPNSTs, researchers in Dr. Le’s laboratory were able to determine that BRD4, a bromodomain protein that binds to DNA to regulate gene activation, is expressed at an unusually high level in MPNST cancer cells.

This action caused another protein called BCL-2 to keep cancer cells from dying. Alternately, when researchers inhibited BRD4 either genetically in the mice or pharmacologically by administering a compound called JQ1, the tumors shrank.

“These treatments suppressed tumor growth and caused the cancer cells to undergo apoptosis, or cell death. This is why BRD4 inhibition is exquisitely effective against MPNSTs and may represent a paradigm shift in therapy for these patients,” Dr. Le said.

The same class of drug used in the experiments is currently being evaluated in phase 1 and 2 trials for treatment of leukemia and a subtype of lung cancer. Meanwhile, UT Southwestern is working with a pharmaceutical company to develop a similar BRD4-inhibiting drug to launch a clinical trial for MPNST patients.

New drugs are desperately needed to treat MPNST and provide hope to NF1 patients at highest risk for this cancer, said Dr. Le, who also serves as Co-director of UT Southwestern’s Comprehensive Neurofibromatosis Clinic. The clinic offers neurofibromatosis patients access to the latest clinical trials and treatments.

Co-directed by Dr. Laura Klesse, Assistant Professor of Pediatrics, the clinic is part of the Harold C. Simmons Comprehensive Cancer Center and serves patients with all three types of hereditary neurofibromatosis, including the dominant NF1 type and rarer NF2 and Schwannomatosis forms.


Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,500+ scientific posters on ePosters
  • More Than 3,700+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Regenerative Medicine Biologists Discover a Cellular Structure that Explains Fate of Stem Cells
The findings are presented in the journal Nature.
Thursday, July 02, 2015
Cell that Replenishes Heart Muscle Found by UT Southwestern Researchers
Researchers devise a new cell-tracing technique to detect cells that do replenish themselves.
Tuesday, June 23, 2015
Researchers Find Molecular Mechanisms within Fetal Lungs that Initiate Labor
Biochemists found that steroid receptor coactivators 1 and 2 (SRC-1 and SRC-2) proteins control genes.
Tuesday, June 23, 2015
Researchers Discover Molecule that Accelerates Tissue Regeneration
Newly discovered molecule, SW033291 accelerate cell recovery following bone marrow transplants.
Friday, June 12, 2015
Boosting Gut Bacteria Defense System May Lead to Better Treatments
Life-threatening bloodstream infections reversed by enhancing a specific immune defense response.
Tuesday, June 09, 2015
Immunity Enzyme Defends Against Tuberculosis Infection
Study shows that cGAS enzyme is essential for defense against the tuberculosis bacteria.
Wednesday, June 03, 2015
UT Southwestern Faculty Members Named HHMI Investigators
Appointment of Dr. Kim Orth and Dr. Joshua Mendell to HHMI.
Saturday, May 23, 2015
UT Southwestern’s Dr. Philipp Scherer Receive Banting Medal
Dr. Scherer will receive the prestigious Medal for diabetes research.
Friday, May 08, 2015
Mutations in Two Genes Linked to Familial Pulmonary Fibrosis and Telomere Shortening
PARN and RTEL1 genes strengthen the link between lung fibrosis and telomere dysfunction.
Tuesday, May 05, 2015
Scientists Identify Key Receptors Behind Development of AML
Blocking ITIM-receptor signaling in combination with conventional therapies may represent a novel strategy for AML treatment.
Saturday, May 02, 2015
Scherer to Receive Banting Medal for Diabetes Research
Medal recognizes significant, long-term contributions to the understanding, treatment, or prevention of diabetes.
Thursday, April 30, 2015
Study Reveals Molecular Genetic Mechanisms Driving Breast Cancer Progression
The findings are published online and in the journal Molecular Cell.
Saturday, April 04, 2015
New Cyclotron Facility at UT Southwestern
Expands research opportunities and imaging capabilities for detecting, tracking cancer.
Friday, March 20, 2015
Acetate Supplements Shown to Speed Up Cancer Growth
A major compound produced in the gut by host bacteria.
Friday, February 20, 2015
MAGE Genes Provide Insight into Optimizing Chemotherapy
UT Southwestern Medical Center scientists have identified a new biomarker that could help identify patients who are more likely to respond to certain chemotherapies.
Tuesday, February 17, 2015
Scientific News
Liquid Biopsies: Utilization of Circulating Biomarkers for Minimally Invasive Diagnostics Development
Market Trends in Biofluid-based Liquid Biopsies: Deploying Circulating Biomarkers in the Clinic. Enal Razvi, Ph.D., Managing Director, Select Biosciences, Inc.
Self-Assembling, Biomimetic Membranes May Aid Water Filtration
A synthetic membrane that self assembles and is easily produced may lead to better gas separation, water purification, drug delivery and DNA recognition, according to an international team of researchers.
Researchers Discover Immune System’s 'Trojan Horse'
Oxford University researchers have found that human cells use viruses as Trojan horses, transporting a messenger that encourages the immune system to fight the very virus that carries it.
Crystal Clear Images Uncover Secrets of Hormone Receptors
NIH researchers gain better understanding of how neuropeptide hormones trigger chemical reactions in cells.
How Cholesterol Leads to Clogged Arteries
A new study shows that when immune cells called neutrophils are exposed to cholesterol crystals, they release large extracellular web-like structures that trigger the production of inflammatory molecules linked to artherosclerosis.
Genetic Tug of War
Researchers have reported on a version of genetic parental control in mice that is more targeted, and subtle than canonical imprinting.
Ultrafast DNA Diagnostics
New technology developed by UC Berkeley bioengineers promises to make a workhorse lab tool cheaper, more portable and many times faster by accelerating the heating and cooling of genetic samples with the switch of a light.
Researchers Discover New Type of Mycovirus
Virus infects the fungus Aspergillus fumigatus, which can cause the human disease aspergillosis.
Error Correction Mechanism in Cell Division
Cell biologists have reported an advance in understanding the workings of an error correction mechanism that helps cells detect and correct mistakes in cell division early enough to prevent chromosome mis-segregation and aneuploidy, that is, having too many or too few chromosomes.
How to Become a Follicular T Helper Cell
Uncovering the signals that govern the fate of T helper cells is a big step toward improved vaccine design.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,700+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FREE!