Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Moffitt Cancer Center Researchers Find Novel Predictor for MDS Progression Risk

13.09.2012
Researchers at Moffitt Cancer Center and colleagues have discovered that changes in the physical characteristics of the effector memory regulatory T cell can predict the progression risk of myelodysplastic syndromes (MDS) to acute myeloid leukemia. The finding could improve prognostication for patients with MDS and better inform therapeutic decision making.
The study published in the August issue of The Journal of Immunology.

Awareness of the condition increased earlier this year when ABC’s “Good Morning America” co-anchor Robin Roberts announced that she is battling MDS. Formerly known as pre-leukemia, MDS is a collection of blood disorders. One in three patients with MDS develops bone marrow failure and progresses to acute myelogenous leukemia within the first few years after diagnosis.

MDS involves the ineffective production of blood cells in bone marrow and often leaves patients anemic and in need of frequent blood transfusions.

The disease may develop as the result of chemotherapy or radiation for cancer treatment or can be related to bone marrow failure resulting from frequent transfusions and subsequent iron overload. Because the body has no natural means to reduce iron that accumulates from repeated transfusions, a patient’s organs can become overloaded with iron, leading to heart failure, liver injury, susceptibility to infection and other complications. Bone marrow transplantation may be necessary.

Seeking to understand more about the development of MDS, Moffitt researchers and their colleagues investigated aspects of the immune system, particularly the role of regulatory T cells, also known as Tregs. Tregs, said the researchers, are well-defined players in tumor immune invasion in solid tumors, but little is known about the role Tregs play in pre-malignant human diseases.

“We investigated a Treg subset called ‘effector memory Tregs,’ ” said study senior author Pearlie K. Epling-Burnette, Pharm.D., Ph.D., senior member of Moffitt’s Immunology Department. “We found that changes in the physical characteristics, or phenotypes, of Tregs in MDS suggest that they may be recently activated in a manner similar to effector memory T cells. By looking at a patient’s effector memory Treg cells, we were able to identify patients at higher risk for MDS progression.”

An increase in effector memory Tregs likely reflects active immune suppression and may represent the earliest biomarker indicating conversion to an immunosuppressive microenvironment, the researchers said.

The team concluded that the changes to effector memory Treg phenotype may also be a useful tool for identifying MDS patients who may respond to specific classes of drugs. This would make inclusion of a patient’s Treg status into prognostic and treatment models potentially valuable for informing therapy decisions for patients with MDS.
“Our study sheds light on a unique aspect of T cells and immunity in a pre-malignant model of disease and specifically implicates the importance of changes to effector memory Tregs,” concluded Epling-Burnette and her co-authors. “Our findings specifically implicate effector Treg expansion in disease progression in MDS.”

The study was funded by grants from the National Institutes of Health (R01 Grant CA129952) and Genzyme Corporation.

About Moffitt Cancer Center
Located in Tampa, Moffitt is one of only 41 National Cancer Institute-designated Comprehensive Cancer Centers, a distinction that recognizes Moffitt’s excellence in research, its contributions to clinical trials, prevention and cancer control. Since 1999, Moffitt has been listed in U.S. News & World Report as one of “America’s Best Hospitals” for cancer. With more than 4,200 employees, Moffitt has an economic impact on the state of nearly $2 billion. For more information, visit MOFFITT.org, and follow the Moffitt momentum on Facebook, twitter and YouTube.

Media release by Florida Science Communications

Kim Polacek | EurekAlert!
Further information:
http://www.moffitt.org

More articles from Health and Medicine:

nachricht NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures
17.11.2017 | National Institute of Standards and Technology (NIST)

nachricht High speed video recording precisely measures blood cell velocity
15.11.2017 | ITMO University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>