Featured Research

from universities, journals, and other organizations

Compounds in mate tea induce death in colon cancer cells, in vitro study shows

Date:
January 23, 2012
Source:
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Summary:
In a recent study, scientists showed that human colon cancer cells die when they are exposed to the approximate number of bioactive compounds present in one cup of mate tea, which has long been consumed in South America for its medicinal properties.

Could preventing colon cancer be as simple as developing a taste for yerba mate tea? In a recent University of Illinois study, scientists showed that human colon cancer cells die when they are exposed to the approximate number of bioactive compounds present in one cup of this brew, which has long been consumed in South America for its medicinal properties.

Related Articles


"The caffeine derivatives in mate tea not only induced death in human colon cancer cells, they also reduced important markers of inflammation," said Elvira de Mejia, a U of I associate professor of food chemistry and food toxicology.

That's important because inflammation can trigger the steps of cancer progression, she said.

In the in vitro study, de Mejia and former graduate student Sirima Puangpraphant isolated, purified, and then treated human colon cancer cells with caffeoylquinic acid (CQA) derivatives from mate tea. As the scientists increased the CQA concentration, cancer cells died as a result of apoptosis.

"Put simply, the cancer cell self-destructs because its DNA has been damaged," she said.

The ability to induce apoptosis, or cell death, is a promising tactic for therapeutic interventions in all types of cancer, she said.

de Mejia said they were able to identify the mechanism that led to cell death. Certain CQA derivatives dramatically decreased several markers of inflammation, including NF-kappa-B, which regulates many genes that affect the process through the production of important enzymes. Ultimately cancer cells died with the induction of two specific enzymes, caspase-3 and caspase-8, de Mejia said.

"If we can reduce the activity of NF-kappa-B, the important marker that links inflammation and cancer, we'll be better able to control the transformation of normal cells to cancer cells," she added.

The results of the study strongly suggest that the caffeine derivatives in mate tea have potential as anti-cancer agents and could also be helpful in other diseases associated with inflammation, she said.

But, because the colon and its microflora play a major role in the absorption and metabolism of caffeine-related compounds, the anti-inflammatory and anti-cancer effects of mate tea may be most useful in the colon.

"We believe there's ample evidence to support drinking mate tea for its bioactive benefits, especially if you have reason to be concerned about colon cancer. Mate tea bags are available in health food stores and are increasingly available in large supermarkets," she added.

The scientists have already completed and will soon publish the results of a study that compares the development of colon cancer in rats that drank mate tea as their only source of water with a control group that drank only water.

This in vitro study was published in Molecular Nutrition & Food Research, vol. 55, pp. 1509-1522, in 2011. Co-authors include Sirima Puangpraphant, now an assistant professor at Kasetsart University in Thailand; Greg Potts, an undergraduate student of the U of I; and Mark A. Berhow and Karl Vermillion of the USDA, ARS, National Center for Agricultural Utilization Research in Peoria, Illinois. The work was funded by the U of I Research Board and Puangpraphant's Royal Thai Government Scholarship.


Story Source:

The above story is based on materials provided by University of Illinois College of Agricultural, Consumer and Environmental Sciences. The original article was written by Phyllis Picklesimer. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sirima Puangpraphant, Mark A. Berhow, Karl Vermillion, Greg Potts, Elvira Gonzalez de Mejia. Dicaffeoylquinic acids in Yerba mate (Ilex paraguariensis St. Hilaire) inhibit NF-κB nucleus translocation in macrophages and induce apoptosis by activating caspases-8 and -3 in human colon cancer cells. Molecular Nutrition & Food Research, 2011; 55 (10): 1509 DOI: 10.1002/mnfr.201100128

Cite This Page:

University of Illinois College of Agricultural, Consumer and Environmental Sciences. "Compounds in mate tea induce death in colon cancer cells, in vitro study shows." ScienceDaily. ScienceDaily, 23 January 2012. <www.sciencedaily.com/releases/2012/01/120123115539.htm>.
University of Illinois College of Agricultural, Consumer and Environmental Sciences. (2012, January 23). Compounds in mate tea induce death in colon cancer cells, in vitro study shows. ScienceDaily. Retrieved April 18, 2015 from www.sciencedaily.com/releases/2012/01/120123115539.htm
University of Illinois College of Agricultural, Consumer and Environmental Sciences. "Compounds in mate tea induce death in colon cancer cells, in vitro study shows." ScienceDaily. www.sciencedaily.com/releases/2012/01/120123115539.htm (accessed April 18, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, April 18, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Scientists Find Link Between Gestational Diabetes And Autism

Scientists Find Link Between Gestational Diabetes And Autism

Newsy (Apr. 17, 2015) Researchers who analyzed data from over 300,000 kids and their mothers say they&apos;ve found a link between gestational diabetes and autism. Video provided by Newsy
Powered by NewsLook.com
Video Messages Help Reassure Dementia Patients

Video Messages Help Reassure Dementia Patients

AP (Apr. 17, 2015) Family members are prerecording messages as part of a unique pilot program at the Hebrew Home in New York. The videos are trying to help victims of Alzheimer&apos;s disease and other forms of dementia break through the morning fog of forgetfulness. (April 17) Video provided by AP
Powered by NewsLook.com
Boy or Girl? Intersex Awareness Is on the Rise

Boy or Girl? Intersex Awareness Is on the Rise

AP (Apr. 17, 2015) At least 1 in 5,000 U.S. babies are born each year with intersex conditions _ ambiguous genitals because of genetic glitches or hormone problems. Secrecy and surgery are common. But some doctors and activists are trying to change things. (April 17) Video provided by AP
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