News tagged with chromosome inactivation
Bush embryonic stem cell lines different from newly derived cell lines
Established human embryonic cell lines, including those approved for federal research funding under former President George W. Bush, are different than newly derived human embryonic stem cell lines, according to a study by ...
Dec 01, 2011 |
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Low oxygen levels prevent X chromosome inactivation in human embryonic stem cells
Oxygen levels in the lab can permanently alter human embryonic stem (ES) cells, specifically inducing X chromosome inactivation in female cells, according to Whitehead Institute researchers. Human ES cells have been routinely ...
May 13, 2010 |
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Small RNAs can play critical roles in male infertility/contraception
University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant ...
Apr 09, 2009 |
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Study reveals dynamic changes in gene regulation in human stem cells
A team led by scientists at The Scripps Research Institute and the University of California (UC) San Diego has discovered a new type of dynamic change in human stem cells.
May 03, 2012 |
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Adam's rib, revisited: Evolutionary divergence of mammalian sex chromosomes
(Phys.org) -- Males and females... Mars and Venus... XY and XX chromosomes -- all are common memes. At the same time, the evolution of therian (placental and marsupial) sex chromosomes is less widely understood. ...
Apr 18, 2012 |
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A double ring ceremony prepares telomerase RNA to wed its protein partner
Few molecules are more interesting than DNA—except of course RNA. After two decades of research, that "other macromolecule" is no longer considered a mere messenger between glamorous DNA and protein-synthesizing ...
Mar 25, 2012 |
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By temporarily silencing a hyperactive gene, scientists dramatically boost the efficiency of mouse cloning
In principle, somatic cell nuclear transfer (SCNT) is a potent tool for scientists looking to produce exact genetic replicas of a particular animal. By injecting a nucleus from an adult cell into an oocyte ...
Mar 16, 2012 |
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Gene controlling flowering boosts energy production from sorghum
A sorghum hybrid that does not flower and accumulates as much as three times the amount of stem and leaf matter may help the bioenergy industry, according to a study appearing today in the Proceedings of th ...
Sep 27, 2011 |
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Close up look at a microbial vaccination program
A complex of proteins in the bacterium E.coli that plays a critical role in defending the microbe from viruses and other invaders has been discovered to have the shape of a seahorse by researchers with the U. ...
Sep 22, 2011 |
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Scientist peers into cell division mechanics
A researcher at the University of Wyoming is peeling away the mysteries enshrouding a cellular process occurring billions of times a day in a body, is absolutely precious to life and traces back through the ...
Aug 04, 2011 |
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Speeding up evolution: Orchid epigenetics
Organisms adapt to their dynamic environment using various strategies. Ovidiu Paun, working at the Department of Systematic and Evolutionary Botany, investigates how marsh orchids adjust to and diffuse in ...
Jul 28, 2011 |
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Ends of chromosomes protected by stacked, coiled DNA caps, study finds
(PhysOrg.com) -- Researchers at the University of Pennsylvania School of Medicine are delving into the details of the complex structure at the ends of chromosomes. Recent work, e-published in Nature Structural & ...
Apr 20, 2011 |
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Researchers develop a screen for identifying new anticancer drug targets
Tumor suppressor genes normally control the growth of cells, but cancer can spring up when these genes are silenced by certain chemical reactions that modify chromosomes. Among the most common culprits responsible for inactivating ...
Apr 05, 2011 |
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