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Cell Biology News
Fri, 17 Oct 2014 09:29:14 EDT
High-speed evolution in the lab: Geneticists evaluate cost-effective genome analysis
Life implies change. And this holds true for genes as well. Organisms require a flexible genome in order to adapt to changes in the local environment. Researchers want to know why individuals differ from each other and how these differences are encoded in the DNA. In two review papers, they discuss why DNA sequencing of entire groups can be an efficient and cost-effective way to answer these questions. 
Thu, 16 Oct 2014 19:28:24 EDT
Cellular self-destruct program has deep roots throughout evolution
In what seems like a counter-intuitive move against survival, within animals, some cells are fated to die from the triggering of an elaborate cell death program, known as apoptosis. Now, researchers have honed in on understanding the evolution of caspase-8, a key cell death initiator molecule that was first identified in humans.
Thu, 16 Oct 2014 17:06:14 EDT
How a molecular Superman protects genome from damage
A new role for the RNAi protein Dicer has been found in preserving genomic stability. Researchers discovered that Dicer helps prevent collisions during DNA replication by freeing transcription machinery from active genes. Without Dicer function, transcription and replication machinery collide, leading to DNA damage and massive changes across the genome -- changes that are associated with aging and cancer.
Thu, 16 Oct 2014 16:59:55 EDT
Cells' powerhouses were once energy parasites: Study upends current theories of how mitochondria began
Parasitic bacteria were the first cousins of the mitochondria that power cells in animals and plants -- and first acted as energy parasites in those cells before becoming beneficial, according to a new study.
Thu, 16 Oct 2014 16:59:51 EDT
Sugared soda consumption, cell aging associated in new study
Sugar-sweetened soda consumption might promote disease independently from its role in obesity, according to UC San Francisco researchers who found in a new study that drinking sugary drinks was associated with cell aging.
Thu, 16 Oct 2014 14:40:03 EDT
'Paradigm shift' in understanding of potassium channels
A new discovery relating to one of the most common processes in human cells is being described as a 'paradigm shift' in understanding. Researchers have observed ion permeation in potassium channels which does not follow previously predicted pathways.
Thu, 16 Oct 2014 12:36:12 EDT
MicroRNA molecules serve as on/off switches for inflammation
Two microRNA molecules that control chronic inflammation have been found by researchers, a discovery that one day may help researchers prevent certain fatal or debilitating conditions before they start.
Thu, 16 Oct 2014 12:35:38 EDT
That pregnant feeling makes a fly start nesting
Across the animal kingdom, it's not uncommon for pregnancy to change an expectant mom's behavior. Even female flies have their own rudimentary way of 'nesting,' which appears to be brought on by the stretch of their egg-filled abdomens rather than the act of mating, according to a study.
Thu, 16 Oct 2014 12:35:36 EDT
Cell architecture: Finding common ground
When it comes to cellular architecture, function follows form. Plant cells contain a dynamic cytoskeleton, which is responsible for directing cell growth, development, movement, and division. Over time, changes in the cytoskeleton form the shape and behavior of cells and, ultimately, the structure and function of the organism. New work hones in on how one particular organizational protein influences cytoskeletal and cellular structure in plants, findings that may also have implications for animal cytoskeletal organization, scientists report.
Thu, 16 Oct 2014 12:35:34 EDT
Are male brains wired to ignore food for sex? Nematode study points to basic biological mechanisms
Choosing between two good things can be tough. When animals must decide between feeding and mating, it can get even trickier. In a discovery that might ring true even for some humans, researchers have shown that male brains -- at least in nematodes -- will suppress the ability to locate food in order to instead focus on finding a mate.
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