Navigation Links
Latent memory of cells comes to life

New Danish research has examined the mechanisms behind latent cell memory, which can come to life and cause previously non-existent capacities suddenly to appear. Special yeast cells for example, can abruptly change from being of a single sex to hermaphrodite.

Researchers from the Niels Bohr Institute at the University of Copenhagen have used mathematical models and computer simulations to examine fundamental mechanisms of cell memory. The research is an interdisciplinary cooperation between molecular biologists and physicists and has just been published in the prestigious scientific journal CELL where it is featured on the cover page (article by Dodd et al., 18 May issue).

Dormant capacities

Our genetic material - DNA ?is a blueprint for how we look and are. This genetic material is very stable and it is faithfully transmitted to our descendants. Once in a while though, a change occurs to the DNA, either large or small. Such changes are at the origin of the immense and varied animal and plant life on earth. Constructive changes in the DNA, that is, changes creating new functions, normally arise by a slow and gradual process that involves natural selection operating over many generations.

Sometimes however, dramatic and very sudden changes are observed in one individual in the absence of any kind of change to the DNA. This happens in fact in all of us as our body develops: cells with identical genetic information adopt very different fates, forming tissues that have apparently very little in common with each other, such as skin, brain, or bones. Mechanisms at the origin of this so-called cellular differentiation are those for which researchers at the University of Copenhagen have a possible clarification.

”The explanation for the sudden changes is that it is not the DNA itself that is altered - it is its immediate surroundings that change and thereby cause a cell to activate some of its dormant capacities?says
'"/>

Source:University of Copenhagen


Page: 1 2 3

Related biology news :

1. How A Latent Virus Eludes Immune Defenses
2. Rats infected as newborns grew up vulnerable to memory problems during an immune challenge
3. Structure-building cell signals also may influence learning and memory
4. Mice brains shrink during winter, impairing some learning and memory
5. Montreal researchers probe the genetic basis of memory
6. U of MN researchers reverse memory loss in mice
7. Researchers know what you were about to say; fMRI used to detect memory storage and retrieval
8. Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace
9. Tracking the memory trace
10. Learning and memory stimulated by gut hormone
11. Mechanism for memory revealed in neurons of electric fish
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Latent memory cells comes life

(Date:8/29/2014)... in German . ... is considered the oldest form of communication. Acting as ... example, the sexual attraction between males and females. Fish ... coordinate reproductive behavior in males and females. Scientists at ... Algarve in Faro, Portugal, and at the Max Planck ...
(Date:8/28/2014)... A free mobile app called TX Invasives is now ... The University of Texas at Austin for identifying harmful ... , Invasive species in the United States cause about ... they destroy agricultural crops, clog waterways, kill native plants ... TX Invasives app for reporting where invasive species occur, ...
(Date:8/28/2014)... than traditional cigarettes, but still release toxins into ... USC. , Scientists studying secondhand smoke from e-cigarettes ... harmful particles, with close-to-zero exposure to organic carcinogens. ... in second-hand e-cigarette smoke were found to be ... levels of polycyclic aromatic hydrocarbons cancer-causing organic ...
Breaking Biology News(10 mins):Ready for mating at the right time 2Ready for mating at the right time 3Mobile app makes ID of harmful plants, insects in Texas a snap 2Second-hand e-cig smoke compared to regular cigarette smoke 2
... cargo transport, has inadvertently opened the flood gates for ... the most detailed forecast to date for importing potentially ... ships. Scientists from the Universities of Bristol, UK, ... biological records to assess the risk of future invasions. ...
... that buying food when we are hungry is a recipe ... sensitive to sights and smells of foods that will satiate, ... make our meal choices when we are full, and not ... make healthier choices? Researchers at the Cornell Center for Behavioral ...
... Queen Mary, University of London will bring researchers one-step ... relates to its function in two recently published studies. ... the researchers from the Complex Networks group at Queen ... the brain can have an association despite a lack ...
Cached Biology News:Researchers calculate the global highways of invasive marine species 2Researchers calculate the global highways of invasive marine species 3Preordering lunch increases healthy entree selection in elementary schools 2Mathematicians help to unlock brain function 2
(Date:8/28/2014)... , Aug. 28, 2014   SunTrust Robinson Humphrey ... industry veterans to its equity research team in ... ongoing expansion in equity research demonstrates our commitment ... insights to enhance their investment decision making," said ... STRH.  "We continue to make significant investments in ...
(Date:8/28/2014)... a Florida State University research team has led to ... emit white light, and convert photon energy directly to ... butterfly. , Biwu Ma, associate professor in the Department ... of Engineering, created the molecule in a lab about ... his creation has many other unique capabilities. , For ...
(Date:8/28/2014)... Earlier this month, a report was created by ... Air Force on the performance of vehicles using an ... of fuel made from mustard seeds, offered great potential ... Eco friendly future. In fact, every branch of the ... of foreign oil over the next few years. They ...
(Date:8/28/2014)... 2014 Whitehouse Laboratories is excited to ... with PTI Inspection Systems that will enable ... the art leak testing method development and validation programs ... available. As part of this agreement, Whitehouse Labs has ... Detection Instrument developed and manufactured by PTI. The ...
Breaking Biology Technology:SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 3Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5Whitehouse Labs Renews Partnership with PTI Inspection Systems 2Whitehouse Labs Renews Partnership with PTI Inspection Systems 3
... Designed for Culturing Mammalian, Insect, Plant, Bacteria, and ... Rajul Vyas, Product Manager , ... Edison, NJ 08817; , 1-800-631-5417 or 1-732-287-1200; ... Although shake flasks, T-flasks, or roller bottles have,become the lab ...
... , ... , This Application Report is ... 110,benchtop fermentor/bioreactor system. The modular,BioFlo 110 is offered with a ... variety,of cultures, including mammalian, insect, plant, yeast,and bacterial cells. Complete kits are ...
... , , ... Introduction ... is one in a series documenting,simple protocols for culturing cells in ... offered with an extensive,choice of vessels, impellers and control modules to,enable ...
Cached Biology Technology:An Easy-to-Use Research Fermentor/Bioreactor 2An Easy-to-Use Research Fermentor/Bioreactor 3Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 2Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 3Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 4Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 5Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 6CHO Cell Culture Application Using a BioFlo 110 Benchtop Bioreactor 2CHO Cell Culture Application Using a BioFlo 110 Benchtop Bioreactor 3CHO Cell Culture Application Using a BioFlo 110 Benchtop Bioreactor 4