Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A molecular switch is linked to a common breast cancer

12.11.2007
Researchers have discovered that a molecular switch in the protein making machinery of cells is linked to one of the most common forms of lethal breast cancer worldwide. The discovery by researchers at NYU School of Medicine could lead to new therapies for the cancer, called locally advanced breast cancer (LABC).

Although precise data isn’t available, LABC may account for 50 percent or more of breast cancers among women in developing countries, and 30 percent of breast cancers among socially disadvantaged and minority women in the United States. This type of cancer is defined by a large tumor that is about 2 inches or larger in diameter, about the size of a plum, when first diagnosed. The cancer may have spread into surrounding lymph nodes or other tissues. However, it hasn’t yet spread to more distant areas in the body.

Without treatment, fewer than 20 percent of patients with LABC are living five years after their diagnosis. Unfortunately, even with appropriate treatments, this cancer is deadlier than other types of breast cancer that are detected earlier.

With funding from the Breast Cancer Research Foundation and the Department of Defense, Robert J. Schneider, Ph.D., the Albert B. Sabin Professor of Molecular Pathogenesis, and Silvia C. Formenti, M.D., the Sandra and Edward H. Meyer Professor of Radiation Oncology and Chairwoman of Radiation Oncology, and their colleagues at NYU School of Medicine have made LABC the focus of a coordinated effort to understand the disease.

... more about:
»Cancer »Formenti »LABC »Molecular »Switch »breast »breast cancer

“This disease has not been sufficiently studied, in part because of the social, psychological, economic, and cultural barriers that may stand in the way of obtaining care,” says Dr. Formenti.

“Our study shows that an unusual molecular switch occurs that is essential for the development of these large tumors. We think that this switch could be a target for new therapies,” says Dr. Schneider.

The new study is published in the November 9, 2007 issue of the journal Molecular Cell.

Drs. Schneider and Formenti led the new study which found that two molecules were unusually abundant or “overexpressed” specifically in locally advanced breast cancers. Further analysis in mice revealed that the molecules orchestrated a switch in the use of messenger RNA, a kind of ferry service that carries information for making proteins. This switch, the researchers found, occurs when tumors become starved for oxygen, a condition known as hypoxia. The switch permits the selective expression of proteins that are required for tumors to carry out angiogenesis, the process of developing a blood supply. It also enables tumors to grow to a large size and to progress.

“The identification of the molecular switch and its importance for development of locally advanced breast cancer reveals realistic targets for the development of new therapeutics to block tumor angiogenesis and progression in breast and possibly other cancers,” says Dr. Schneider.

The authors of this study are: Drs. Formenti and Schneider; Ksenia Karpisheva; Steve Braunstein; Carolina Pola; Judith Goldberg; Tsivia Hochman; Herman Yee; Joan Cangiarella; and Rezina Arju. All are affiliated with NYU School of Medicine.

Pamela McDonnell | EurekAlert!
Further information:
http://www.nyumc.org

Further reports about: Cancer Formenti LABC Molecular Switch breast breast cancer

More articles from Life Sciences:

nachricht What the world's tiniest 'monster truck' reveals
23.08.2017 | American Chemical Society

nachricht Treating arthritis with algae
23.08.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

What the world's tiniest 'monster truck' reveals

23.08.2017 | Life Sciences

Treating arthritis with algae

23.08.2017 | Life Sciences

Witnessing turbulent motion in the atmosphere of a distant star

23.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>