Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers unlock key secrets showing how tumors hide from immune system

12.01.2004


In one of the biggest advances to come from the H. Lee Moffitt Cancer Center & Research Institute in its 16-year history, researchers have unlocked at least part of the mystery of how tumors flourish undetected by keeping their presence a secret from sentries of the body’s immune system.



"Flying beneath the radar" is how Nature Reviews Cancer (http://www.nature.com/cgi-taf/DynaPage.taf?file=/nrc/journal/v4/n1/full/nrc1261_fs.html) labels the mechanism of tumors evading capture, a process described by Hua Yu, Ph.D., and her colleagues at Moffitt and the University of South Florida College of Medicine. Their findings are published in the current issue of the journal Nature Medicine.

"Cancer is allowed to wreak havoc on the body’s immune system because it knows how to fool the body’s defensive arsenal," explains Jack Pledger, Ph.D., Associate Center Director for Basic Science and Professor of Biochemistry at USF. "The discoveries of Dr. Yu give us vital information about how tumors stay ’invisible.’ It opens the way for new treatments to help flush the cancer cells into the open, so the body’s armies against disease can destroy them."


Yu is an Associate Professor in the USF Department of Medical Microbiology and Immunology and the Immunology Program at Moffitt. Her coauthors on the study include Drew Pardoll, M.D., Ph.D., from the Johns Hopkins University School of Medicine, together with Richard Jove, Ph.D., and William Dalton, Ph.D., M.D., both from Moffitt and USF. Other authors include Tianhong Wang, Ph.D.., Guilian Niu, Ph.D., Lyudmila Burdelya, Ph.D., and Marcin Kortylewski, Ph.D. The study is titled "Regulation of the innate and adaptive immune responses by Stat3 signaling in tumor cells."

The researchers documented that the tumor’s activation of Stat3 (from the STAT family of proteins that regulates genes) secretes factors that inhibit the body’s immune responses by keeping dendritic cells from maturing. The activation also blocks expression of inflammatory mediators required to trigger the immune system.

Other ongoing research at Moffitt related to Stat3 includes using microarray technology to study the characteristic gene expression profiles or "molecular signatures" of certain genes that are regulated by the STAT. Scientists suspect that many genes that are directly or indirectly regulated by Stat3 may contribute to cancer, and they are working to develop new drugs based on inhibiting Stat3 for more effective treatment of breast cancer, prostate cancer, sarcoma, melanoma and other tumors that harbor aberrantly activated Stat3.

Andrea Brunais | EurekAlert!
Further information:
http://www.nature.com/cgi-taf/DynaPage.taf?file=/nrc/journal/v4/n1/full/nrc1261_fs.html
http://hsc.usf.edu/

More articles from Health and Medicine:

nachricht Rabies viruses reveal wiring in transparent brains
19.01.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn

nachricht On track to heal leukaemia
18.01.2017 | Universitätsspital Bern

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: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland

19.01.2017 | Earth Sciences

Not of Divided Mind

19.01.2017 | Life Sciences

Molecule flash mob

19.01.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>