Navigation Links
Gut microbes promote cell turnover by a well-known pathway
Date:10/7/2010

Microbes matter -- perhaps more than anyone realizes -- in basic biological development and, maybe, they could be a target for reducing cancer risks, according to University of Oregon researchers.

In a study of very basic biology of zebrafish, scientists in the UO Institute of Molecular Biology focused on the developing intestine during its early formation in the sterile environment of its eggshell through the exposure to natural colonizing bacteria after hatching.

What they found was eye opening, said Karen Guillemin, professor of biology: Resident microbes in the still-maturing intestine send messages that promote non-disease-related cell proliferation in the same Wnt [pronounced went] signaling pathway where genetic mutations have long been known to give rise to colorectal cancer. The findings appeared online ahead of regular publication in the Proceedings of the National Academy of Sciences.

The complex Wnt pathway in the gut already is considered the starting point for more than 70 percent of sporadic colorectal cancers. In the study, researchers used normal zebrafish and those harboring mutations in the Wnt pathway. They were reared under germ-free conditions and then exposed under laboratory conditions to specific microbes to define how microbial signals interact with the Wnt pathway to promote cell proliferation in the gut.

"We were able to show that microbial signals do feed into and enhance signaling in the Wnt pathway. They feed in at a point after the node where most cancer-promoting genetic mutations occur," Guillemin said. "What this says is that for anyone who is at risk for developing cancer because they have these mutations, it matters what microbes these mutations are associated with. These two pieces of information contribute in parallel and feed into the same pathway."

The findings, she said, add fodder in an emerging shift in cancer research to look at the impact of microbes and other infectious causes of the disease. "It may be that associated microbes play as significant a role in cancer risk as genetic mutations," she said. "We need to learn more about the contributions of microbe signaling to cell proliferation. Maybe you could intervene with a targeted therapy. Even if you can't fix a mutation you might manipulate the associated microbes to change the interaction and reduce unwanted cell proliferation."

Genetic research on zebrafish a high-priority model organism for the National Institutes of Health, which supported the project began at the UO in the early 1970s. Guillemin, who recently received an early career investigator-scholar award from the NIH Institute of Digestive and Kidney Diseases, is known for her studies in zebrafish on the role of good bacteria in the gastrointestinal tract.


'/>"/>

Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert  

Related medicine news :

1. Researchers engineer microbes for low-cost production of anti-cancer drug, Taxol
2. Study reveals a secret to the success of notorious, disease-causing microbes
3. New weapon against highly resistant microbes within grasp
4. Scientists Map Genetic Codes of Human Microbes
5. You Are What Microbes You Eat
6. ASTRO, Emilio Nares Foundation join to promote cancer survivorship
7. Individual mutations are very slow to promote tumor growth
8. Difficult Dialogues Initiative promotes diversity at MU, around country
9. Gold Standard/Elsevier promotes medication safety and compliance via New MEDcounselor languages
10. BVibrantNow, A New All-Natural Health Supplement Business, Launches Free Online Wellness Calendar to Promote Healthy Habits
11. Interventions to promote repeat breast cancer screening with mammography
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Gut microbes promote cell turnover by a well-known pathway
(Date:9/19/2017)... ... 2017 , ... The Lymphoma Research Foundation (LRF) – the ... the lymphoma community through a comprehensive series of education programs, outreach initiatives and ... Swirl: A Wine Tasting Event series on Thursday, October 26, 2017. Hosted at ...
(Date:9/19/2017)... ... 19, 2017 , ... The American College of Lifestyle ... recently formed Corporate Roundtable, a group of individuals and organizations whose collective vision ... Canyon Ranch is a unique collection of lifestyle-based immersion vacation settings and programs ...
(Date:9/19/2017)... (PRWEB) , ... September 19, 2017 , ... ... issued a rallying cry to Americans to watch for the discomforts and hidden ... young athletes to senior citizens, everyone is at risk for developing fungal infections ...
(Date:9/19/2017)... ... September 19, 2017 , ... Leonard I. Linkow, DDS, DMSC, sets ... (published by Xlibris on July of 2014). This book details the recent advances and ... approaches that benefit people who have lost all of their natural teeth . ...
(Date:9/19/2017)... Va (PRWEB) , ... September 19, 2017 , ... The ... the use of health IT to create efficiencies in healthcare information exchange and a ... the release of their latest industry white paper, entitled Barriers to Adoption of ...
Breaking Medicine News(10 mins):
(Date:9/5/2017)... , Sept. 5, 2017 Oramed Pharmaceuticals Inc. (NASDAQ: ... a clinical-stage pharmaceutical company focused on the development of ... successfully concluded its meeting with the U.S. Food and ... insulin formulation. At ... regulatory pathway for submission of ORMD-0801, would be a ...
(Date:9/1/2017)... 1, 2017  Bayer will present the latest research from ... Medical Oncology (ESMO) 2017 Congress, September 8-12 in ... preclinical and clinical data on Bayer,s marketed portfolio and late-stage ... "We value the ... cancer research at ESMO," said Carsten Brunn , Head ...
(Date:8/29/2017)... 2017 In a move that promises to ... for veterinary practices of all sizes, Cubex LLC and ... makes TITAN,s expertise in physical security, drug diversion investigations, ... nationally. "Every ... substances is at risk today," said TITAN founder and ...
Breaking Medicine Technology: