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. (PhysOrg.com) -- When evolution has lucked into efficient solutions for life`s most fundamental problems, it adopts them as invaluable family heirlooms, passing them down as one species evolves into another. So it was reasonable to expect that a key regulator of embryonic development - a strand of RNA that shepherds stem cells through the process of differentiation - might play the same role in all vertebrates, from fish to people. New research, however, has shown that when it comes to microRNAs, what works for one animal may not work the same way in another. http://www.physorg.com/news161613204.html Biology Fri, 15 May 2009 13:34:51 EST news161613204 (PhysOrg.com) -- A new development in stem cell research has resulted from a completed study by a collaboration of scientists using the drug Rapamycin to inhibit mTOR, an intracellular protein necessary in cell proliferation. UCR`s Jiayu Liao, assistant professor in the Department of Bioengineering at Bourns College of Engineering, recently published a paper on the results in the Proceeding of the National Academy of Sciences dealing with human embryonic stem cell pluripotency. http://www.physorg.com/news161612417.html Biology Fri, 15 May 2009 13:20:52 EST news161612417 Scientists at UC Santa Barbara have made a significant discovery in understanding the way human embryonic stem cells function. http://www.physorg.com/news160314968.html Biology Thu, 30 Apr 2009 12:56:46 EST news160314968 US President Barack Obama will on Monday sign an executive order reversing Bush administration restrictions on federal funding for stem-cell research, a senior administration official said. http://www.physorg.com/news155587890.html Biology Fri, 06 Mar 2009 18:52:07 EST news155587890 The study, which appears in the December 18 online version of Cell Stem Cell and the January 2009 print edition of the journal, provides proof of principle that alternative sources of stem cells can be created. http://www.physorg.com/news148830455.html Biology Thu, 18 Dec 2008 13:47:35 EST news148830455 Typically, tobacco companies market harm-reduction cigarettes as being safer than traditional "full-flavored" brands, leading many smokers to conclude that the use of harm-reduction brands lowers their exposure to toxicants. http://www.physorg.com/news147975441.html Medicine & Health Mon, 08 Dec 2008 16:17:21 EST news147975441 Researchers have identified a stage during dopamine neuron differentiation that may be an ideal time to collect human embryonic stem cells for transplantation to treat Parkinson's disease, according to data presented at Neuroscience 2008, the 38th annual meeting of the Society for Neuroscience. http://www.physorg.com/news146314741.html Medicine & Health Wed, 19 Nov 2008 10:59:01 EST news146314741 The National Academies today released amended guidelines for research involving human embryonic stem cells, revising those that were issued in 2005 and updated in 2007. The Academies originally produced the guidelines to offer a common set of ethical standards for the responsible conduct of research using human stem cells, an area that, due to an absence of comprehensive federal funding, was lacking national standards. Since their initial release, the guidelines have served effectively as the basis for oversight of this research in the United States. In addition, a standing advisory committee -- a joint project between the Academies' National Research Council and Institute of Medicine -- was established to monitor and review scientific advances and determine any need for revisions. http://www.physorg.com/news139830672.html Biology Fri, 05 Sep 2008 10:51:12 EST news139830672 (PhysOrg.com) -- The results of a new study involving a McMaster University researcher provide insight into how scientists might control human embryonic stem cell differentiation. http://www.physorg.com/news137422723.html Biology Fri, 08 Aug 2008 13:58:43 EST news137422723