Navigation Links
Marine organisms with eternal life can solve the riddle of aging
Date:4/20/2011

Animals that reproduce asexually by somatic cloning have special mechanisms that delay ageing provide exceptionally good health. Scientists at the University of Gothenburg have shown how colony-forming ascidians (or sea squirts) can activate the enzyme telomerase, which protects DNA. This enzyme is more active also in humans who attain an advanced age.

"Animals that clone themselves, in which part of an individual's body is passes on to the next generations, have particularly interesting conditions related to remaining in good health to persist. This makes it useful to study these animals in order to understand mechanisms of ageing in humans", says Helen Nilsson Skld of the Department of Marine Ecology, University of Gothenburg.

There are enormous differences in the lengths of life of the Earth's species. Some animals and plants that reproduce asexually can in principle achieve essentially eternal life; there are examples of deep-sea corals that are tens of thousands of years old. Helen Nilsson Skld has decided to study sea squirts and starfish, which are species whose genes resemble closely those of humans.

"My research has shown that sea squirts rejuvenate themselves by activating the enzyme telomerase, and in this way extending their chromosomes and protecting their DNA. They also have a special ability to discard 'junk' from their cells. Older parts of the animal are quite simply broken down, and are then partially recycled when new and healthy parts grow out from the adult bodies."

Some species of starfish reproduce asexually by tearing apart their bodies, while others reproduce sexually only. This makes them particularly interesting animals to study. Both types of starfish can reconstruct lost body parts, but the species that reproduce asexually have considerably better health.

However, one consequence of asexual reproduction is that the species as a whole will have a very low genetic variation. This means that they will be particularly vulnerable to climate change, and the subsequent new types of changes in the environment. There is a high risk that these animals and plants will lose out and then we will lose important knowledge about the riddle of ageing.


'/>"/>

Contact: Helen Nilsson Skld
helen.skold@marecol.gu.se
46-052-318-529
University of Gothenburg
Source:Eurekalert  

Related biology news :

1. VIMS study: Propeller turbulence may affect marine food webs
2. Studies of marine animals aim to help prevent rejection of transplanted organs
3. Death -- not just life -- important link in marine ecosystems
4. Human impacts on the marine ecosystems of Antarctica
5. New device uses submarine technology to diagnose stroke quickly
6. Algae, bacteria hogged oxygen after ancient mass extinction, slowed marine life recovery
7. Ecological scorecards to help assess status, trends in North Americas marine protected areas
8. A research study analyzes marine spill prevention policies in Spain
9. MBARI and Monterey Bay National Marine Sanctuary to study effects of shipping containers lost at sea
10. New study shows marine networks can protect fish stocks
11. Semporna may have richest marine biodiversity in the world
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Marine organisms with eternal life can solve the riddle of aging
(Date:2/8/2017)... , Feb. 8, 2017 About Voice ... voice to match it against a stored voiceprint ... as pitch, cadence, and tone are compared to ... minimal hardware installation, as most PCs already have ... different transactions. Voice recognition biometrics are most likely ...
(Date:2/8/2017)... 2017 Report Highlights ... The global synthetic-biology market reached nearly ... 2021, growing at a compound annual growth rate (CAGR) of ... the global markets for synthetic biology. - Analyses of global ... projections of compound annual growth rates (CAGRs) through 2021. - ...
(Date:2/8/2017)... -- Report Highlights The global biosurgery market ... in 2016 at a compound annual growth rate (CAGR) ... - An overview of the global market for biosurgery. ... 2015 and 2016, and projections of compound annual growth ... on the basis of product type, source, application, and ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... ... February 23, 2017 , ... Brain ... to begin marketing the SPEAC® System, the Brain Sentinel® Seizure Monitoring and Alerting ... in healthcare facilities during periods of rest. A lightweight, non-invasive monitor is placed ...
(Date:2/23/2017)... ... 2017 , ... Today, researchers can fast-track sample collection and ... other biomarkers or SNPs of interest) using one, easy-to-collect saliva sample. With the ... between insulin and other relevant biomarkers can be extensively studied through a non-invasive ...
(Date:2/23/2017)... DIEGO , Feb. 23, 2017 ... research tools, announced the acquisition of GenWay Biotech ... a comprehensive service and product offering for both ... acquisition will facilitate growth and enhance capabilities for ... antibodies, and ELISA assays will nicely complement ASB,s ...
(Date:2/22/2017)... , Feb. 22, 2017  Aratana Therapeutics, Inc. (NASDAQ: PETX), ... commercialization of innovative biopharmaceutical products for companion animals, will host ... 8:30 a.m. ET to discuss financial results from the fourth ... Interested participants and investors may access the audio ... ...
Breaking Biology Technology: