Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Studies demonstrate differing response from left and right colon tumors

14.07.2003


Significant genetic differences exist between tumors of the right and left side of the colon, according to data presented today at the 94th Annual Meeting of the American Association for Cancer Research (AACR), and these distinctions should be considered for future research and treatment.



"With emerging treatments directed toward specific molecular targets, there should be special emphasis on such an important differentiation," said Sanne Olesen, M.Sc. of biology, Aarhus University Hospital, Denmark, and lead investigator of the study conducted by scientists from Denmark and Finland. "Hopefully with this new understanding of the differences that exist in the colon, we can more efficiently treat cancer patients."

In the study, approximately 6,800 known genes were monitored for activity. Twenty single samples of normal colonic mucosa were compared to 25 single cancerous samples from both the left and right sides of the colon. Findings were validated by semi-quantitative, RealTime-PCR and immunohistochemistry, or observations of clinical reactions to the immune system.


Scientists found 58 genes that were dissimilar between the normal samples and the left-sided tumor samples, and 118 genes between the normal samples and the right-sided tumor samples. An additional 44 unique genes were found between the right- and left-sided tumor samples. Furthermore, scientists identified 30 genes which showed parallel expression in both sides, and therefore may be regarded as general tumor markers.

"This discovery may explain why some colorectal patients have responded to treatment while others did not," said Dr. Torben Orntoft, a professor at Aarhus University. "With new targeted therapies in development, our patients have a better chance of survival."

Colon cancer is one of the most common cancers found in men and women today. The American Cancer Society estimates that in 2003 there will be about 105,500 new cases of colon cancer in the United States, causing over 57,000 deaths


Founded in 1907, the American Association for Cancer Research (AACR) is a professional society of more than 20,000 laboratory and clinical scientists engaged in cancer research in the United States and more than 60 other countries. AACR’s mission is to accelerate the prevention and cure of cancer through research, education, communication and advocacy. Its principal activities include the publication of five major peer-reviewed scientific journals (Cancer Research; Clinical Cancer Research; Molecular Cancer Therapeutics; Molecular Cancer Research; and Cancer Epidemiology, Biomarkers & Prevention). AACR’s annual meeting attracts more than 12,000 participants who share new and significant discoveries in the cancer field, and the AACR’s specialty meetings throughout the year focus on all the important areas of basic, translational and clinical cancer research.


Contact: Warren Froelich/AACR
froelich@aacr.org
215/440-9300


Aimee Frank/Spectrum Science
amf@spectrumscience.com
202/955-6222

In Washington, DC: (7/11-7/14)
Washington Convention Center
202/249-4060

Warren Froelich | EurekAlert!

More articles from Health and Medicine:

nachricht Fast-tracking T cell therapies with immune-mimicking biomaterials
16.01.2018 | Wyss Institute for Biologically Inspired Engineering at Harvard

nachricht Dengue takes low and slow approach to replication
12.01.2018 | Duke 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: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

White graphene makes ceramics multifunctional

16.01.2018 | Materials Sciences

Breaking bad metals with neutrons

16.01.2018 | Materials Sciences

ISFH-CalTeC is “designated test centre” for the confirmation of solar cell world records

16.01.2018 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>