Featured Research

from universities, journals, and other organizations

Double Binding Sites On Tumor Target May Provide Future Combination Therapy

Date:
April 8, 2008
Source:
University of Pennsylvania School of Medicine
Summary:
Researchers have found that two drugs bind to receptor sites on some tumors in different places at the same time, suggesting the possibility of a new combination therapy for certain types of cancer.

Researchers from the University of Pennsylvania School of Medicine and colleagues at Merck Serono Research in Germany have found that two drugs bind to receptor sites on some tumors in different places at the same time, suggesting the possibility of a new combination therapy for certain types of cancer.

Related Articles


An increasing number of therapies targeting tumors that have proteins called epidermal growth factor receptors (EGFR) sitting on their surface are already being used in the clinic or are in late stages of development. For example, Tarceva is an established treatment for certain types of lung cancer and pancreatic cancer, and Erbitux and Vectibix are in use for other types of cancer. An additional drug called matuzumab is in phase II clinical trials.

Three years ago, Kate Ferguson, PhD, Assistant Professor of Physiology, and colleagues determined the precise molecular details of how Erbitux, a colorectal and head and neck cancer drug, binds to its target on cancer cells. EGFR drugs halt cell proliferation by blocking EGFR's molecular doorway, keeping hormones from binding and signaling tumor growth. X-ray crystallography provided a snapshot of the interaction between Erbitux and the extracellular component of the cancer cell's receptors.

As is characteristic of many epithelial cancers - such as cancers of the colon, head and neck, breast, ovary, lung, and pancreas - the surface of cancer cells possess abnormally high levels of EGFR. In a cancer cell, an extracellular hormone binds to the outer piece of EGFR, and causes the inside part to kick off a series of reactions that signal the cancerous cell to replicate and divide.

In the present study, published in Cancer Cell, Ferguson and Merck colleagues found -- again using X-ray crystallography -- that matuzumab binds in a different place from Erbitux. Their binding does not overlap, and they can bind to EGFR at the same time.

"These findings imply that a combination therapy using both types of EGFR drugs could be developed and tested," says Ferguson. "This has important implications for the clinical use of matuzumab and for developing new therapies that target EGFR."

The research was governed by a Supported Research Agreement between Merck KGaA and the Trustees of the University of Pennsylvania and is financially supported in part by Merck KGaA, and the National Cancer Institute. Kate Ferguson is the Dennis and Marsha Dammerman Scholar of the Damon Runyon Cancer Research Foundation.


Story Source:

The above story is based on materials provided by University of Pennsylvania School of Medicine. Note: Materials may be edited for content and length.


Cite This Page:

University of Pennsylvania School of Medicine. "Double Binding Sites On Tumor Target May Provide Future Combination Therapy." ScienceDaily. ScienceDaily, 8 April 2008. <www.sciencedaily.com/releases/2008/04/080408132118.htm>.
University of Pennsylvania School of Medicine. (2008, April 8). Double Binding Sites On Tumor Target May Provide Future Combination Therapy. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2008/04/080408132118.htm
University of Pennsylvania School of Medicine. "Double Binding Sites On Tumor Target May Provide Future Combination Therapy." ScienceDaily. www.sciencedaily.com/releases/2008/04/080408132118.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins