Featured Research

from universities, journals, and other organizations

Fountain of youth in bile? Longevity molecule identified

Date:
September 15, 2010
Source:
Concordia University
Summary:
The human quest for longer life may be one step closer. A new study is the first to identify the role of a bile acid, called lithocholic acid, in extending the lifespan of normally aging yeast. The findings may have significant implications for human longevity and health, as yeast share some common elements with people.

New research has identified the role of a bile acid, called lithocholic acid, in extending the lifespan of normally aging yeast.
Credit: iStockphoto/Jaime Gonzαlez

The human quest for longer life may be one step closer, thanks to research from Concordia University. Published in the journal Aging, a new study is the first to identify the role of a bile acid, called lithocholic acid (LCA), in extending the lifespan of normally aging yeast. The findings may have significant implications for human longevity and health, as yeast share some common elements with people.

Related Articles


"Although we found that LCA greatly extends yeast longevity, yeast do not synthesize this or any other bile acid found in mammals," says senior author Vladimir Titorenko, Concordia University Research Chair in Genomics, Cell Biology and Aging and a professor in the Department of Biology. "It may be that yeast have evolved to sense bile acids as mildly toxic molecules and respond by undergoing life-extending changes. It is conceivable that the life-extending potential of LCA may be relevant to humans as well."

Over 19,000 small molecules screened

Titorenko and colleagues screened more than 19,000 small molecules to test their ability to extend yeast-lifespan. Under both normal and stressed conditions, LCA had a major impact.

"Our findings imply that LCA extends longevity by targeting two different mechanisms," says first author Alexander Goldberg, a Concordia doctoral student. "The first takes place regardless of the number of calories and involves the day-to-day or housekeeping proteins. The second system occurs during calorie-restriction and involves stressor proteins."

"Regardless of their triggers both of these mechanisms work to suppress the pro-aging process," he continues.

Bile acids may be beneficial to health

"Although we have an overall idea how LCA works to extend longevity in yeast, we still need to determine if this is the case for other species," says Titorenko. "We do know from previous studies, however, that bile acids are beneficial to health and longevity. For example, they have shown to accumulate in the serum of long living mice and play a role in improving rodent liver and pancreatic function."

"This leads us to believe that bile acids have potential as pharmaceutical agents for the treatment of diabetes, obesity and various metabolic disorders, all of which are age-related," continues Titorenko. "They may indeed offer hope for a healthy aging life."

This study was funded by the Canadian Institutes of Health Research, the Natural Sciences and Engineering Research Council of Canada, the Canada Foundation for Innovation and the Concordia University Chair Fund.


Story Source:

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


Journal References:

  1. Alexander A. Goldberg, Vincent R. Richard, Pavlo Kyryakov, Simon D. Bourque, Adam Beach, Michelle T. Burstein, Anastasia Glebov, Olivia Koupaki, Tatiana Boukh‐Viner, Christopher Gregg, Mylθne Juneau, Ann M. English, Vladimir I. Titorenko and David Y. Thomas. Chemical genetic screen identifies lithocholic acid as an anti‐aging compound that extends yeast chronological life span in a TOR independent manner, by modulating housekeeping longevity assurance processes. Aging, 2010; 2 (7): 393 [link]
  2. Alexander A. Goldberg, Pavlo Kyryakov, Simon D. Bourque and Vladimir I. Titorenko. Xenohormetic, hormetic and cytostatic selective forces driving longevity at the ecosystemic level. Aging, 2010; 2 (8): 461-470 [link]

Cite This Page:

Concordia University. "Fountain of youth in bile? Longevity molecule identified." ScienceDaily. ScienceDaily, 15 September 2010. <www.sciencedaily.com/releases/2010/09/100915100935.htm>.
Concordia University. (2010, September 15). Fountain of youth in bile? Longevity molecule identified. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2010/09/100915100935.htm
Concordia University. "Fountain of youth in bile? Longevity molecule identified." ScienceDaily. www.sciencedaily.com/releases/2010/09/100915100935.htm (accessed October 24, 2014).

Share This



More Health & Medicine News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) — An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) — Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. Video provided by Newsy
Powered by NewsLook.com
Ebola Fears Keep Guinea Hospitals Empty

Ebola Fears Keep Guinea Hospitals Empty

AP (Oct. 23, 2014) — Fears of Ebola are keeping doctors and patients alike away from hospitals in the West African nation of Guinea. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Despite Rising Death Toll, Many Survive Ebola

Despite Rising Death Toll, Many Survive Ebola

AP (Oct. 23, 2014) — The family of a Dallas nurse infected with Ebola in the US says doctors can no longer detect the virus in her. Despite the mounting death toll in West Africa, there are survivors there too. (Oct. 23) 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