Corporate Banner
Satellite Banner
Molecular & Clinical Diagnostics
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Mount Sinai Researchers Unveil New Chemotherapy-Resistant Cancer Stem Cell

Published: Wednesday, September 12, 2012
Last Updated: Wednesday, September 12, 2012
Bookmark and Share
Scientists have discovered cells that display cancer stem cell properties and resistance to chemotherapy, and participate in tumor progression.

Scientists at Mount Sinai School of Medicine have discovered a subpopulation of cells that display cancer stem cell properties and resistance to chemotherapy, and participate in tumor progression. This breakthrough could lead to the development of new tests for early cancer diagnosis, prognostic tests, and innovative therapeutic strategies, as reported in Cancer Cell.

Resistance to chemotherapy is a frequent and devastating phenomenon that occurs in cancer patients during certain treatments. Unfortunately, tumors that initially respond to chemotherapy eventually become resistant to it, contributing to tumor progression and death. The study reveals that these new cancer "stem" cells, which have not been differentiated into more specific cell types, are capable of multiplying despite being exposed to chemotherapy, while differentiated cells die.

Led by Carlos Cordon-Cardo, MD, PhD, Chair of Pathology, and Josep Domingo-Domenech, MD, PhD, Assistant Professor of Pathology at Mount Sinai, the research team generated cellular models of drug resistance by treating prostate tumor cell lines with increasing doses of the common chemotherapy drugs, including docetaxel. They identified a cell population expressing markers of embryonic development. In addition, these cells displayed cancer stem cell functions, including the capacity to initiate tumor cell growth. Next, the team evaluated human tissue samples of prostate cancer and found that patients with more aggressive or metastatic tumors had more of these cancer "stem" cells.

"This is the first time these so-called cancer stem cells of prostate have been identified as the basis for drug resistance and tumor progression, indicating that they are cancer's ‘Achilles Heel,'" said Dr. Cordon-Cardo. "These findings are the culmination of more than six years of innovative research, which has led to the successful unveiling of cancer characteristics that are critical to understanding how the disease works and progresses."

The study also defines a new therapeutic strategy for patients with prostate cancer, consisting of a combination of standard chemotherapy and two pharmacological agents that inhibit key signaling pathways associated with embryonic development and cell differentiation. Results showed that chemotherapy eliminated differentiated tumor cells, whereas the signaling pathway inhibitors selectively depleted the cancer stem cell population. Some of these inhibitors are already in clinical trials, and some are FDA-approved.

"By targeting these newly identified cancer ‘stem' cells, we are attacking the foundation of tumor growth, rather than treating the symptoms of it," said Dr. Domingo-Domenech. "The novel discovery of this cell population could lead to the development of new tests for early cancer diagnosis, prognostic tests, and innovative therapeutic strategies."

Ongoing studies suggest that this new cell type exist in other tumor types such as breast cancer, colon cancer, bladder cancer and lung cancer. Dr. Cordon-Cardo's team is studying these disease areas to determine the presence and impact of these cancer cells.


Further Information

Join For Free

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 3,500+ scientific posters on ePosters
  • More than 5,000+ 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.


Scientific News
Point of Care Diagnostics - A Cautious Revolution
Advances in molecular biology, coupled with the miniaturization and improved sensitivity of assays and devices in general, have enabled a new wave of point-of-care (POC) or “bedside” diagnostics.
ReadCoor Launched to Commercialize 3D Sequencing Tech
ReadCoor will leverage the Wyss Institute’s method for simultaneously sequencing and mapping RNAs within cells and tissues to advance development of diagnostics.
Crispr Toolbox Expanded By Protein
Researchers have shown a newly discovered CRISPR protein has two distinct RNA cutting activities.
Heart Arrhythmia Caused by Mosaic of Mutant Cells
Researchers have solved the genetic mystery of an infant suffering from heart arrhythmia.
Over Two-Thirds of Cervical Cancer Deaths Prevented
Cervical screening prevents 70% of cervical cancer deaths and if all eligible women regularly attended screening this would rise to 83%.
Detecting Bacterial Infections in Newborns
Researchers tested an alternative way to diagnose bacterial infections in infants—by analyzing RNA biosignatures from a small blood sample.
Case for Liquid Biopsies Builds in Advanced Lung Cancer
Study addresses unmet need for better, non-invasive tests called out in recent "Moonshot" blue ribbon panel report
Mechanisms of Parkinson’s Pathology
Defects that lead to cells’ failure to decommission faulty mitochondria cause nerve cells to die, triggering the symptoms of Parkinson’s disease.
Genetic Misdiagnoses of Heart Condition
Analysis found several genetic variations previously linked with a heart condition were harmless, leading to condition misdiagnosis.
Opening Door to Oesophageal Cancer Targeted Treatments
Scientists have discovered that oesophageal cancer can be classified into three different subtypes.
Skyscraper Banner

SELECTBIO Market Reports
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
3,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
5,000+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!