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:2/24/2017)... 2017 China Cord Blood Corporation (NYSE: ... provider of cord blood collection, laboratory testing, hematopoietic stem ... its unaudited financial results for the third quarter and ... 31, 2016. Third Quarter of Fiscal 2017 ... of fiscal 2017 increased by 18.6% to RMB200.9 million ...
(Date:2/23/2017)... NEW YORK , Feb. 23, ... , a leading digital health company, and ... of telemedicine and remote patient monitoring, announce they ... reimbursements.  DN Telehealth maximizes collaboration ... real-time, extending consultations beyond a physical clinical setting ...
(Date:2/23/2017)... Feb. 23, 2017  In Atlanta, it seems everyone has ... culture intertwine to create an expressive and dynamic community unlike ... energy and contribute to it. With their ... Fairies seeks to carry on that tradition with a ... Atlanta salon is the newest of 13 nationwide ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... 12th annual Inventors Recognition Reception at Purdue Research Park of West ... member in recognition of outstanding contributions to, and success with, commercializing discoveries from ...
Breaking Biology Technology:
(Date:2/1/2017)... IDTechEx Research, a leading provider of independent market research, ... a new report, Sensors for Robotics: Technologies, Markets and Forecasts ... ... Revenues ... "Sensors for Robotics: Technologies, Markets and Forecasts 2017-2027: Machine vision, force ...
(Date:1/26/2017)... -- Crossmatch, a leading provider of security and identity management ... fraud, waste and abuse in assistance operations around the ... Disaster Relief conference in Panama City ... foreign assistance organizations throughout Latin America ... largely unacknowledged problem in the foreign assistance and disaster ...
(Date:1/24/2017)... , Jan. 24, 2017 Biopharm Reports ... the laboratory use of nuclear magnetic resonance spectroscopy ... end-users and profiled current practices, developments, trends and ... well as growth and opportunities. These areas include ... NMR instruments, needs and innovation requirements, hyphenated NMR ...
Breaking Biology News(10 mins):