John C. Morris, MD, and his colleagues report their findings in the Nov. 13, 2012, issue of PLOS One, a peer-reviewed online publication that features original research from all disciplines within science and medicine.
Stem cells are unique cells that can divide and differentiate into specialized cells types—for example cardiac muscle or liver tissue. These cells also have the ability to self-renew and produce more stem cells.
"Increasing evidence supports the idea that cancerous tumors have a population of stem cells, also called cancer-initiating cells, that continually regenerate and fuel cancer growth," explains Morris, senior author of the study and professor at the UC College of Medicine. "These cancer stem cells may also have the highest potential to spread to other organs."
Current models used to study cancer stem cells provide limited information on the interaction between cancer stem cells with the immune system, making the study of new therapies that utilize the body's immune system to fight off cancer virtually impossible.
In this study, the UC team set out to find a viable, consistent way to isolate lung cancer stem cells that could be used in a mouse model with full immune system function. The team was able to achieve this using a functional laboratory test known as "tumorsphere" assay.
The test—which shows how cells grow in culture—allowed them to enrich for cancer stem cells.
"Studying these unique cells could greatly improve our understanding of lung cancer's origins and lead to the novel therapeutics targeting these cells and help to more effectively eradicate this disease," adds Morris. "Immunotherapy is the future of cancer treatment. We are hopeful that this new method will accelerate our investigation of immunotherapies to specifically target cancer stem cells."
The team is working to characterize how cancer stem cells escape the body's immune system in order to develop more effective therapies that target stem cells.
"One of the hypotheses behind why cancer therapies fail is that the drug only kills cells deemed to be 'bad' (because of certain molecular characteristics), but leaves behind stem cells to repopulate the tumor," adds Morris. "Stem cells are not frequently dividing, so they are much less sensitive to existing chemotherapies used to eliminate cells deemed abnormal."
UC study collaborators in this UC-funded study include hematology oncology postdoctoral fellow Brian Morrison, PhD, and Jason Steel, PhD, a lung cancer researcher and assistant professor of research at the UC College of Medicine.
The University of Cincinnati Cancer Institute is one of four UC and UC Health collaborative centers of excellence for research, patient care and education. The UC Cancer Institute and Cincinnati Children's Hospital Medical Center Cancer and Blood Diseases Institute together form the Cincinnati Cancer Center, a joint cancer initiative aimed at advancing cancer care faster through innovative research.
Amanda Harper | Source: EurekAlert!
Further information: www.uc.edu
More articles from Life Sciences:
New insights into the immune system of the gastrointestinal tract
09.12.2013 | Helmholtz Zentrum München
Vibrational Molecular Pathology
09.12.2013 | Journal of Biophotonics
In power electronics systems bonded connections create the central electrical connections between adjoining surfaces.
The quality of these bonded connections is one of the main factors that determines the reliability and availability of drive systems in electric vehicles, and hence constitutes a major design challenge for German auto manufacturers aiming to electrify their vehicles.
Now the partners participating in the RoBE (Robust Bonds in ...
International team of scientists develops new feedback method for optimizing the laser pulse shapes used in the control of chemical reactions
In many ways, traditional chemical synthesis is similar to cooking. To alter the final product, you can change the ingredients or their ratio, change the method of mixing ingredients, or change the temperature or pressure of the environment of the ingredients.
Like an accomplished chef, chemists have become very skilled ...
A genetic defect protects mice from infection with influenza viruses
A new study published in the scientific journal PLOS Pathogens points out that mice lacking a protein called Tmprss2 are no longer affected by certain flu viruses.
The discovery was made by researchers from the Helmholtz Centre for Infection Research (HZI) in Braunschweig in collaboration with colleagues from Göttingen and ...
The Light: Global study gets underway with online user survey
Light has a fundamental impact on our sense of well-being and performance. In cooperation with Zumtobel, a supplier of lighting solutions, Fraunhofer IAO has launched a global user survey of lighting quality in offices. The objective is to identify the best lighting conditions for a variety of spaces and lighting ...
Quantum entanglement, a perplexing phenomenon of quantum mechanics that Albert Einstein once referred to as “spooky action at a distance,” could be even spookier than Einstein perceived.
Physicists at the University of Washington and Stony Brook University in New York believe the phenomenon might be intrinsically linked with wormholes, hypothetical features of space-time that in popular science fiction can provide a much-faster-than-light shortcut from one part of the universe to another.
But here’s the catch: One couldn’t actually ...
09.12.2013 | Materials Sciences
09.12.2013 | Life Sciences
09.12.2013 | Studies and Analyses
05.12.2013 | Event News
04.12.2013 | Event News
12.11.2013 | Event News