Navigation Links
Consuming soy peptide may reduce colon cancer metastasis
Date:7/8/2013

URBANA, Ill. After a recent University of Illinois study showed that injection of the soy peptide lunasin dramatically reduced colon cancer metastasis in mice, the researchers were eager to see how making lunasin part of the animals' daily diet would affect the spread of the disease.

"In this new study, we find that giving lunasin orally at 20 mg/kg of body weight reduced the number of metastatic tumors by 94 percentwe went from 18 tumors to only one. And that was done using lunasin alone; no other type of therapy was used," said Elvira de Mejia, a U of I professor of food chemistry and food toxicology.

In the first study, injections of lunasin were used in concert with the chemotherapy drug oxaliplatin, yielding impressive results: a sixfold reduction in metastatic tumors to the liver.

"We learned in that study that lunasin can penetrate the cancer cell, cause cell death, and interact with at least one type of receptor in a cell that is ready to metastasize," said Vermont Dia, a postdoctoral associate in the de Mejia laboratory.

That led the scientists to do this study in which they experimented with oral doses of the peptide. "After all, soy is a food, and we wanted the animals to consume it as a food. Because this lunasin would be digested, we needed to figure out how much should be fed to achieve the desired concentration in the bloodstream," de Mejia said.

Using mice that had been injected with human colon cancer cells, the scientists began by feeding the animals 8 mg/kg of lunasin daily, which reduced the number of new tumors in the liver by 55 percent. They increased the dose five times, at last achieving a 94 percent reduction in tumors at 20 mg/kg of lunasin.

"We were very impressed by the reduction, but the results were short of statistical significance from the control group. More animals are needed to strengthen the power of the analysis. It's a small study but very promising," de Mejia said.

The scientists plan to repeat the study again using 30 mg/kg of lunasin as soon as they can obtain funding. "One tumor is still too many. We'd like to see no tumors," she said.

The scientists said that consuming the equivalent of 20 to 30 mg/kg of lunasin in soy foods would be daunting in terms of number of servings per day. "But it would certainly be possible if food companies began to offer lunasin-enriched soy milk or yogurt," she said, noting that lunasin-enriched flour is already on the market.

De Mejia said that chronic daily exposure to lunasin could make an even bigger difference in terms of cancer development and metastasis. "These animals were acutely exposed to the peptide for only 28 days, and we still achieved these results."

There is evidence that lunasin accumulates in the body tissues, most notably the livers, of animals that have experienced chronic exposure to this bioactive component of soy. "Consuming soy protein regularly in the diet could be important not only for nutrition but also for cancer prevention," she said.

The researchers also plan to begin a year-long study that would model lifetime exposure to lunasin in transgenic mice programmed to develop colon cancer in contrast to a group that did not receive any lunasin, she said.

Human studies are needed to validate the pre-clinical studies, de Mejia added.


'/>"/>

Contact: Phyllis Picklesimer
p-pickle@illinois.edu
217-244-2827
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert

Related medicine news :

1. Americans Already Consuming the Right Amount of Salt
2. Sugar Addict Claims Americans Consuming 150 lbs of Sugar Yearly
3. U.S. Kids Consuming Fewer Calories, Report Finds
4. Consuming coffee linked to lower risk of detrimental liver disease, Mayo Clinic finds
5. Combination peptide therapies might offer more effective, less toxic cancer treatment
6. Synthetic corkscrew peptide kills antibiotic-resistant Gram-negative bacteria
7. Is this peptide a key to happiness?
8. Global Peptide Therapeutics Market - New Market Research Report Published by Transparency Market Research
9. Collagen is a Key Anti-Aging Ingredient and is Featured in the New Collagen Peptide Serum at Sublime Beauty®; Introductory Offer on Now
10. Last Chance for the Sublime Beauty® Serums at 30-Percent Off; Quality Anti-Aging Products Include Retinol Serum, Collagen Peptide Serum and Luxurious Facial Oil
11. Huntingtons Disease Linked to Reduced Cancer Risk in Study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... Nevada (PRWEB) , ... October 13, 2017 , ... ... Hemp CBD Oil utilizing Purzorb™ technology. Applying the Purzorb™process to full spectrum CBD oil ... required and providing a CBD form that can be easily incorporated into liquid products, ...
(Date:10/13/2017)... ... October 13, 2017 , ... Apple Rehab Shelton Lakes , which specializes ... of the facility as part of a disaster drill on October 3rd. , Apple ... Shelton City Emergency Manager, as well as the Connecticut Long Term Care Mutual ...
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for ... for action towards gender equality at their inaugural Summit in New York City in ... reached a social audience of over 3 million. To watch the Mobilize Women video, ...
(Date:10/13/2017)... ... 2017 , ... Talented host, actor Rob Lowe, is introducing ... new episode of "Success Files," which is an award-winning educational program broadcasted on ... subject in-depth with passion and integrity. , Sciatica occurs when the sciatic nerve ...
(Date:10/13/2017)... , ... October 13, 2017 , ... “America On The ... identity. “America On The Brink” is the creation of published author, William Nowers. ... great-grandchildren. As a WWII veteran, he spent thirty years in the Navy. ...
Breaking Medicine News(10 mins):
(Date:9/18/2017)... 18, 2017 EpiVax, Inc. ("EpiVax") ... and immune engineering, today announced a new ... (H7N9) vaccine. ... influenza and presents a challenge for traditional ... to be effective. Using state-of-the-art bioinformatics and molecular ...
(Date:9/12/2017)... NEW YORK , Sept. 12, 2017   EcoVadis , ... supply chains, has published the first annual edition of its Global CSR ... than 20,400 companies evaluated by EcoVadis, based on Scorecard Ratings that analyzed ... ... & Performance Index ...
(Date:9/12/2017)... , Sept. 12, 2017  ValGenesis Inc., the ... (VLMS), is pleased to announce the appointment of ... of its Board of Directors and Chairman of ... enables life science companies to manage their entire ... of paper in this process. Furthermore, ValGenesis VLMS ...
Breaking Medicine Technology: