Navigation Links
Growing old together: Yeast, worms and people may age by similar mechanisms
Date:3/12/2008

Thursday, March 13, 2008 A study published online today in Genome Research (www.genome.org) provides new insight into the evolutionary conservation of the genes and pathways associated with aging. This report describes the identification of conserved aging-related genes in simple model organisms that may lead to the characterization of similar genes playing a role in human aging and age-associated diseases.

While nearly all organisms experience aging, the underlying mechanisms have eluded geneticists and evolutionary biologists. Many different theories have been suggested, yet experimental evidence strongly suggests that aging is modulated, at least in part, by genetic factors. Previous studies have implicated a number of conserved genes in model organisms as regulators of aging, such as the Sirtuins and insulin/IGF1 receptors. However, no investigations to date have quantified the degree to which aging-related genes are conserved across the genome among distantly related species.

In the study published today, a group of researchers led by Drs. Matt Kaeberlein and Brian Kennedy of the University of Washington conducted a genome-wide analysis of the yeast Saccharomyces cerevisiae and the nematode worm Caenorhabditis elegans, to identify genes that may regulate aging in humans. Nematodes and humans are more similar to each other on an evolutionary scale than nematodes and yeast, explains Dr. Erica Smith, primary author of the study. We reasoned that if a particular gene modulates aging in both yeast and nematodes, there is a good chance that gene plays a similar role in people.

The researchers compiled a set of 276 C. elegans genes that were known to modulate aging, and scanned the yeast genome for genes with highly similar sequences. The highly similar yeast genes were then individually analyzed for a potential role in longevity by measuring the life span of yeast cells lacking each gene. Our study identified 25 genes that regulate aging in both yeast and nematodes, 22 of which were not previously known to be conserved modulators of aging, says Kaeberlein. As 15 of the 25 yeast genes are highly similar to known human genes, Kaeberlein adds that this work is readily applicable to human aging research. It is reasonable to speculate that many of the genes identified in our study also regulate longevity in humans.

In addition to identifying related pairs of aging-associated genes in yeast and nematodes, the group also investigated whether these genes are involved in common functional pathways. We find that there is significant overlap between nematode and yeast aging genes, particularly those in nutrient-response pathways, describes Kennedy. Signaling pathways involved in the response to nutrients have previously been implicated in the regulation of aging. This finding indicates that two very different species age through overlapping mechanisms and suggests that these mechanisms are likely to also contribute to human aging.

The genes identified in this study now provide a foundation for extending this research to a higher model organism, and ultimately for understanding human aging. It will be important to determine how each of these genes modulate aging at the molecular level, and to test whether they also modulate aging in a mammalian model, such as mice, says Kaeberlein. In principle, any of these genes could be a useful therapeutic target for treating age-associated diseases.


'/>"/>

Contact: Peggy Calicchia
calicchi@cshl.org
516-422-4012
Cold Spring Harbor Laboratory
Source:Eurekalert

Related biology technology :

1. BioCryst Strengthens Its Expertise in Clinical Development By Adding Thomas J. Simon, M.D. as Interim Chief Medical Officer To Meet Growing Product Development and Commercial Opportunities
2. Growing tiny carbon nanotube wires to connect computer chips of the future
3. Biotechnology Needed to Help Meet Growing Global Needs for Food, Feed, Fuel and Materials, DuPont Chairman & CEO Says at World Food Prize
4. Landfill mining reduces environmental impact of growing waste
5. Bone-growing nanomaterial could improve orthopaedic implants
6. Nanotech could make solar energy as easy and cheap as growing grass
7. Landfill mining reduces environmental impact of growing waste
8. Microfluidic chambers advance the science of growing neurons
9. Synvista Therapeutics Highlights Newly Published Data Demonstrating the Value of Haptoglobin Genotype Testing In People with Diabetes
10. Move to AMITIZA Advertising Campaign Underscores the Power of Not Letting Chronic Constipation Slow People Down
11. Video: New Survey Finds Technology Plays a Critical Role in Lives of People with Multiple Sclerosis, Yet Many Are Not Using it to Overcome Disease-Related Challenges
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2017)... ... 22, 2017 , ... Stratevi, a boutique firm that partners with healthcare companies ... opened an office in downtown Boston at 745 Atlantic Ave. , “We are ... generate evidence on the value they provide, not just to patients, but also payers. ...
(Date:5/19/2017)... (PRWEB) , ... May 19, 2017 , ... In response ... treating gait disorders, Biodex Medical Systems, Inc. announces the release of their Gait Trainer ... has been joined with a biomedical system to aid in rehabilitating individuals with cerebral ...
(Date:5/18/2017)... ... ... NDA Partners Chairman Carl Peck, MD , announced today that Richard ... of Pharmaceutical Development Business Unit of Cardinal Health, has joined the firm as an ... former Chief Operating Officer at Anaborex, Senior VP and General Manager of the San ...
(Date:5/18/2017)... ... May 17, 2017 , ... ... today that their Chief Executive Officer, Maik Jornitz, was recognized as a Top ... Power List celebrates 100 individuals “involved in bettering the pharma industry and bringing ...
Breaking Biology Technology:
(Date:5/16/2017)... -- Veratad Technologies, LLC ( www.veratad.com ), an innovative and ... solutions, announced today they will participate as a sponsor ... May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions of ... digital world, defining identity is critical to nearly every ...
(Date:4/24/2017)... Janice Kephart , former 9/11 ... Partners, LLP (IdSP) , today issues the following ... March 6, 2017 Executive Order: Protecting the ... be instilled with greater confidence, enabling the reactivation ... applications are suspended by until at least July ...
(Date:4/17/2017)... , April 17, 2017 NXT-ID, Inc. ... company, announces the filing of its 2016 Annual Report on Form ... Exchange Commission. ... Form 10-K is available in the Investor Relations section of the ... on the SEC,s website at http://www.sec.gov . 2016 ...
Breaking Biology News(10 mins):