Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers identify first genomic blueprint of cancer preventive compound found in broccoli

16.09.2002


Discovery could lead to the identification of other cancer-preventing compounds



Using gene chip technology, researchers at the Johns Hopkins Bloomberg School of Public Health have identified the blueprint of genes and enzymes in the body that enable sulforaphane, a compound found in broccoli and other vegetables, to prevent cancer and remove toxins from cells. The discovery was made using a "gene chip" that allows researchers to monitor the complex interactions of thousands of proteins on a whole genome rather than one at time. The study is published in the September 15, 2002 issue of the journal Cancer Research, and is the first gene profiling analysis of a cancer-preventing agent using this approach. The researchers believe the findings provide a better understanding of the body’s defense mechanisms and could lead to the identification of other cancer-preventing food compounds and strategies.

For the study, the researchers analyzed the downstream genomic targets of the transcription factor Nrf2 (Nuclear factor E2 p45-related factor 2), which scientists previously knew was activated in response to anticancer agents such as sulforaphane. The transcription factor, Nrf2, in response to cancer preventive agents, turns on genes and pathways inside the cell, whose products help in ridding the body of carcinogens.


"Carcinogens mutate the DNA in genes, which leads to cancer. Now, we know that sulforaphane present in broccoli can turn an extensive network of genes and pathways, which can annihilate a broad spectrum of carcinogens," said Shyam Biswal, PhD, assistant professor of environmental health sciences at the Johns Hopkins Bloomberg School of Public Health.

"With this study we’ve identified the specific genes regulated in response to a promising chemopreventive agent, which tells us how the process of cancer chemoprevention is occurring and provides us with a novel strategy for evaluating potential cancer preventive agents in future," explained Dr. Biswal.

Dr. Biswal and his colleagues studied the gene profile of small intestines of mice to identify the genes regulated by Nrf2. The researchers treated groups of mice with sulforaphane and compared the effects to control groups in which the Nrf2 gene was knocked off. "In summary, this study expands the scope of the positive, coordinated regulation of a wide variety of cellular defense proteins by Nrf2 and underscores the potential of Nrf2 activation as a strategy for achieving cancer chemoprevention," said Dr. Biswal.

Tim Parsons | EurekAlert!
Further information:
http://www.jhsph.edu/
http://www.jhu.edu/news_info/news/listserv.html

More articles from Life Sciences:

nachricht Topologische Quantenchemie
21.07.2017 | Max-Planck-Institut für Chemische Physik fester Stoffe

nachricht Topological Quantum Chemistry
21.07.2017 | Max-Planck-Institut für Chemische Physik fester Stoffe

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA looks to solar eclipse to help understand Earth's energy system

21.07.2017 | Earth Sciences

Stanford researchers develop a new type of soft, growing robot

21.07.2017 | Power and Electrical Engineering

Vortex photons from electrons in circular motion

21.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>