Navigation Links
Active component of grape seed extract effective against cancer cells

A University of Colorado Cancer Center study published online ahead of print in the journal Nutrition and Cancer describes the laboratory synthesis of the most active component of grape seed extract, B2G2, and shows this synthesized compound induces the cell death known as apoptosis in prostate cancer cells while leaving healthy cells unharmed.

"We've shown similar anti-cancer activity in the past with grape seed extract (GSE), but now we know B2G2 is its most biologically active ingredient which can be synthesized in quantities that will allow us to study the detailed death mechanism in cancer cells," says Alpna Tyagi, PhD, of the University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences. Tyagi works in the lab of CU Cancer Center investigator and Skaggs School of Pharmacy faculty member, Chapla Agarwal, PhD.

The group has spent more than a decade demonstrating the anti-cancer activity of GSE in controlled, laboratory conditions. For example, previous studies have shown the GSE effectiveness against cancer cells and have also shown its mechanism of action. "But until recently, we didn't know which constituent of GSE created this effect. This naturally occurring compound, GSE, is a complex mixture of polyphenols and also so far it has been unclear about the biologically active constituents of GSE against cancer cells," Tyagi says.

Eventually the group pinpointed B2G2 as the most active compound, but, "it's expensive and it takes a long time to isolate B2G2 from grape seed extract," Tyagi says.

This expense related to the isolation of B2G2 has limited the group's further exploration. So instead of purifying B2G2 from GSE, the group decided to synthesize it in the lab. The current study reports the success of this effort, including the ability to synthesize gram-quantity of B2G2 reasonably quickly and inexpensively.

In the paper's second half, the group shows anti-cancer activity of synthesized B2G2 similar in mechanism and degree to overall GSE effectiveness.

"Our goal all along has been a clinical trial of the biologically active compounds from GSE against human cancer. But it's difficult to earn FDA approval for a trial in which we don't know the mechanisms and possible effects of all active components. Therefore, isolating and synthesizing B2G2 is an important step because now we have the ability to conduct more experiments with the pure compound. Ongoing work in the lab further increases our understanding of B2G2′s mechanism of action that will help for the preclinical and clinical studies in the future," Tyagi says.


Contact: Garth Sundem
University of Colorado Denver

Related medicine news :

1. 62 percent of men and 37 percent of women over the age of 65 are sexually active
2. Gene Signal presents data at ARVO 2012 showing topical aganirsen is active in retinal disease
3. Introducing Screenplay: An interactive childrens waiting room experience
4. Inherited DNA change explains overactive leukemia gene
5. Key to More Active, Slimmer Kids: Friends
6. New anti-inflammatory drugs pinch off reactive oxygen species at the source
7. Parents - not TV - may determine whether kids are active or couch potatoes
8. SingleSource Background Screening Company Calls On Adults To Take Proactive Approach To Stop Child Sexual Abuse
9. Active, Outdoor Teens Are Happier Teens: Study
10. Author, Speaker Richard London Battles Parkinson’s with an Active Lifestyle and the Desire to Give Back
11. Friends Life Care, a Pennsylvania Based Long-Term Care Provider, Launches VigR eMeetinghouse — An Interactive Online Community
Post Your Comments:
(Date:11/29/2015)... ... , ... Doctors who missed a case of mesothelioma in a 70-year-old Japanese ... push for a diagnosis, especially in people exposed to asbestos. Surviving Mesothelioma has just ... now. , Researchers at Gifu Prefectural Tajimi Hospital in Japan say the ...
(Date:11/28/2015)... ... November 28, 2015 , ... ... and teleradiology services, has added Chris Hafey and Claude Hooton to its board ... Radiological Society of North America (RSNA) 2015 Annual Meeting and continues to strategically ...
(Date:11/28/2015)... ... 28, 2015 , ... Pixel Film Studios is back again with ProPanel: ... possibilities are endless. Users have full control over angle of view, speed method, start ... are sure to get heads to turn. , ProPanel: Pulse offers fully customizable pulsating ...
(Date:11/27/2015)... ... November 27, 2015 , ... According to an ... changing the way that they are handling security in light of the recent terrorist ... presence in an attempt to stop an attack from reaching U.S. soil. Especially around ...
(Date:11/27/2015)... ... November 27, 2015 , ... "When I was traveling, ... from Hillside, N.J. "Many people catch diseases simply from sitting on such dirty ... be protected from germs." , He developed the patent-pending QUDRATECS to eliminate the ...
Breaking Medicine News(10 mins):
(Date:11/29/2015)... 29, 2015  Strengthening its leadership in connected healthcare ... today announced IntelliSpace Portal 8.0 , the latest ... platform that helps radiologists detect, diagnose and follow-up on ... Society of North America Annual Meeting (RSNA) in ... helps address the changing demands in radiology that result ...
(Date:11/29/2015)... Iowa , Nov. 29, 2015 ... ultrasound guidance technology at the Radiological Society of ... in Chicago November 29 ... system is designed to offer customers unrivaled versatility, ... --> ...
(Date:11/27/2015)... UTRECHT , Niederlande, November 27, 2015 /PRNewswire/ ... mit fotodynamischer Bremachlorin-Therapie bei fortgeschrittenem Krebs.   ... fotodynamischer Bremachlorin-Therapie bei fortgeschrittenem Krebs.   --> ... fotodynamischer Bremachlorin-Therapie bei fortgeschrittenem Krebs.   ... berichtet. --> Clinical Cancer Research ...
Breaking Medicine Technology: