Stemagen CEO to Give Featured Presentation at 4th Stem Cell Conference.Samuel H. Wood, CEO at Stemagen, which announced on January 17, 2008 that it has become the first in the world to create, and meticulously document, a cloned human embryo using somatic cell nuclear transfer (SCNT), will give a featured presentation at the 4th International Stem Cell Research & Therapeutics, Apr 17-18, 2008 in Boston, MA. March 29, 2008 (FPRC) -- Dr. Wood will discuss the scientific, ethical, and legal challenges of human nuclear transfer stem cells. For more than a decade, attempts have been made to develop embryonic stem cell (ESC) lines following SCNT into human oocytes. But success has been elusive for a variety of scientific and practical reasons. Although Stemagen’s recent report of the first successful cloning of adult human fibroblast cells to the blastocyst stage represents an important milestone on the path to developing nuclear transfer stem cells (NTSC), significant obstacles remain. Chief among these impediments is a persistent paucity of high-quality human oocytes. Oocyte donation models described in currently promulgated ethical guidelines have not provided a practicable approach for the procurement of a significant number of oocytes for stem cell research. Stemagen’s research into the attitudes of young women towards egg donation for stem cell research indicates that recruiting donors will be extraordinarily difficult unless changes are made to these models. In approaching the scientific challenges of NTSC, events associated with the chromatin remodeling and epigenetic reprogramming of the somatic cell donor DNA following transfer are the most critical in optimizing the reinitiation of embryonic developmental pathways. The many available studies on mammalian cloning may provide additional important insights. The cloning of five blastocysts from 21 oocytes subjected to SCNT using fibroblasts obtained from two adult male skin donors, utilizing methods modified for human cells, is described, and the current status of human NTSC, as well as strategies to overcome the challenges that impede the achievement of its full potential in the field of regenerative medicine are explored. Keywords: Stem Cell You can read this press release online at: http://www.free-press-release-center.info/pr00000000000000012957.html |