http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. When mother and daughter cells are created each time a cell divides, they are not exactly alike. They have the same set of genes, but differ in the way they regulate them. New research now reveals that these regulatory differences between mother and daughter cells are directly linked to how they prepare for their next split. The work, a collaboration between scientists at Rockefeller University and the State University of New York, Stony Brook, may ultimately lead to a better understanding of how cell division goes awry in different types of cancer. The findings are reported in this week's PLoS Biology. http://www.physorg.com/news175204209.html Biology Mon, 19 Oct 2009 21:00:01 EST news175204209 A Purdue University researcher has discovered that the absence of certain proteins needed for proper cell duplication can lead to cancer. http://www.physorg.com/news173969394.html Chemistry Mon, 05 Oct 2009 14:00:06 EST news173969394 (PhysOrg.com) -- Using new genetic tools, Cornell researchers have found that some stem cells in mice behave dramatically different than in fruit flies, where most of the pioneering stem cell work has been conducted. The findings could have important implications for understanding how some cancers might be initiated, say the researchers. http://www.physorg.com/news169480057.html Biology Fri, 14 Aug 2009 15:40:07 EST news169480057 The promise of stem cell therapy may lie in uncovering how adult cells revert back into a primordial, stem cell state, whose fate is yet to be determined. Now, cell scientists at the Johns Hopkins University School of Medicine have identified key molecular players responsible for this reversion in fruit fly sperm cells. Reporting online this week in Cell Stem Cell, researchers show that two proteins are responsible redirecting cells on the way to becoming sperm back to stem cells. http://www.physorg.com/news168788764.html Biology Thu, 06 Aug 2009 15:00:01 EST news168788764 Lars Jansen's work on the formation of the centromere, a key cellular structure in powering and controlling chromosome segregation and accurate cell division, has just earned him a paper in Nature Cell Biology and a prestigious EMBO installation grant, of 50,000 euro per year. http://www.physorg.com/news165669735.html Biology Wed, 01 Jul 2009 13:00:07 EST news165669735 (June 21, 2009) - Notch signaling helps determine the fate of a number of different cell types in a variety of organisms, including humans. In an article that appears in the current issue of Nature Cell Biology, researchers at Baylor College of Medicine report that a new finding about the Notch signaling pathway in sensory organ precursor cells in the fruit fly could explain the mystery behind an immunological disorder called Wiskott-Aldrich syndrome. http://www.physorg.com/news164809934.html Biology Sun, 21 Jun 2009 14:10:02 EST news164809934 Driving Miranda, a protein in fruit flies crucial to switch a stem cell's fate, is not as complex as biologists thought, according to University of Oregon biochemists. They've found that one enzyme (aPKC) stands alone and acts as a traffic cop that directs which roads daughter cells will take. http://www.physorg.com/news161519009.html Biology Thu, 14 May 2009 11:24:08 EST news161519009 Before a cell can divide into two, first it must duplicate its genetic material--the DNA packed in its chromosomes. The two new sets of chromosomes then have to be separated from one another and correctly distributed to the resulting "daughter" cells, so that both daughter cells are genetically identical to the original, or "parent," cell. http://www.physorg.com/news153075893.html Medicine & Health Thu, 05 Feb 2009 17:05:31 EST news153075893 A Swedish research group has discovered a new mechanism for cell division in a microorganism found in extremely hot and acidic conditions. The results of the research offer insights into evolution, but also into the functioning of the human body. The research has been recently published in PNAS, the magazine of the American National Academy of Sciences. Thijs Ettema, member of the research group, received a Rubicon grant from NWO in 2006 to gain experience abroad. http://www.physorg.com/news146833462.html Biology Tue, 25 Nov 2008 11:04:22 EST news146833462 A study of how one protein enzyme, BubR1, helps make sure chromosomes are equally distributed during mitosis might explain how the process of cell division goes so awry in cancer, according to researchers from Fox Chase Cancer Center. Their findings might offer a better understanding of the processes behind cancer-cell survival and drug-resistance. http://www.physorg.com/news146133713.html Medicine & Health Mon, 17 Nov 2008 08:41:53 EST news146133713 Unlike some parents, adult stem cells don't seem to mind when their daughters get a tattoo. In fact, they're willing to pass them along. Using the molecular equivalent of a tattoo on DNA that adult stem cells (ASC) pass to their "daughter" cells in combination with gene expression profiles, University of Utah researchers have identified two early steps in adult stem cell differentiation -the process that determines whether cells will form muscle, neurons, skin, etc., in people and animals. http://www.physorg.com/news140266575.html Biology Wed, 10 Sep 2008 11:56:15 EST news140266575