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Molecular Biology News
Mon, 27 Apr 2015 13:31:17 EDT
How an RNA gene silences a whole chromosome
Researchers have discovered how an abundant class of RNA genes, called lncRNAs can regulate key genes. By studying an important lncRNA, called Xist, the scientists identified how this RNA gathers a group of proteins and ultimately prevents women from having an extra functional X-chromosome -- a condition in female embryos that leads to death in early development. These findings mark the first time that researchers have uncovered the mechanism of action for lncRNA genes.
Mon, 27 Apr 2015 12:44:38 EDT
Parallel sequencing of DNA and RNA provides insight into secret world of cells
Researchers have developed a large-scale sequencing technique called Genome and Transcriptome Sequencing (G&T-seq) that reveals, simultaneously, the unique genome sequence of a single cell and the activity of genes within that single cell.
Mon, 27 Apr 2015 10:15:27 EDT
Oil or fat? Saturated fatty acids might directly damage your heart
Olive oil is universally considered a much healthier alternative to meat fat. Plant-derived oils (such as olive oil, canola oil, and vegetable oil) largely consist of unsaturated fatty acids, whereas animal fat is richer in the saturated ones. After a typical meal, carbohydrates are the primary source of energy production by the heart. Under fasting conditions, however, free fatty acids become the major energy producer. Saturated fat in a diet is known to be detrimental to heart health, but its impact on the cardiac muscle has been studied only recently.
Mon, 27 Apr 2015 08:28:51 EDT
3-D image of live embryo turning itself inside out
Researchers have captured the first 3-D video of a living algal embryo turning itself inside out, from a sphere to a mushroom shape and back again. The results could help unravel the mechanical processes at work during a similar process in animals, which has been called the 'most important time in your life.'
Fri, 24 Apr 2015 12:23:10 EDT
Cell fusion 'eats up' the 'attractive cell' in flowering plants
Flowering plants naturally know when they need to spare or perish their cells. Scientists have now examined the ovules of plant cells to reveal a novel cell-elimination system based on an unusual cell fusion.
Fri, 24 Apr 2015 08:56:30 EDT
Beyond genes: Are centrioles carriers of biological information?
Scientists have discover that certain cell structures, the centrioles, could act as information carriers throughout cell generations. The discovery raises the possibility that transmission of biological information could involve more than just genes. Centrioles may actually be carriers of information, which holds profound implications for biology and disease treatment.
Fri, 24 Apr 2015 08:50:13 EDT
Discovery of a protein capable of regulating DNA repair during sperm formation
Researchers have discovered that the signalling route - a cascade activation of several molecules - triggered by the ATM protein regulates DNA repair during the production of spermatocytes by meiosis, the cell division process which yields spermatozoa.
Fri, 24 Apr 2015 08:50:01 EDT
Understanding the body's response to worms and allergies
Scientists are a step closer to developing new therapies for controlling the body's response to allergies and parasitic worm infections.
Thu, 23 Apr 2015 14:27:42 EDT
A GPS for chromosomes: Microtubules direct chromosomes during cell division
Scientists have identified a " Highway Code" within cells, a finding that changes the way we perceive how chromosomes move during cell division. Using chromosomes as a model to explain this navigation system, the research team show how this signaling mechanism determines the path through which molecular transporters travel. They have revealed that the existence of specific signals on microtubules -- which work as intracellular highways -- give directions to chromosomes on which route to take in the course of cell division.
Thu, 23 Apr 2015 12:58:54 EDT
Looking to fossils to predict tooth evolution in rodents: Ever-growing molars in the future?
Fifty million years ago, all rodents had short, stubby molars -- teeth similar to those found in the back of the human mouth, used for grinding food. Over time, rodent teeth progressively evolved to become taller, and some rodent species even evolved continuously growing molar teeth. A new study predicts that most rodent species will have ever-growing molars in the far distant future.
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