Gerald Schatten is an American stem cell researcher with interests in cell, developmental, and reproductive biology. He is Professor and Vice-Chair of Obstetrics, Gynecology and Reproductive Sciences and Professor of Cell Biology and Physiology at the University of Pittsburgh, where he is also Director of the Division of Developmental and Regenerative Medicine at the university's School of Medicine. Additionally, he is Deputy Director of the Magee-Womens Research Institute and Director of the Pittsburgh Development Center.
Schatten’s work on fertilization examines the differential inheritance of cellular components contributed by the sperm and egg, respectively, as well as the program of oocyte activation and cell division during meiosis and mitosis. His group has demonstrated the importance of the sperm centrosome-centriole complex during mammalian fertilization, with the unexpected exception of rodents in which the centrosome is of maternal origin.
Schatten also made contributions to imaging and microscopy. In his first published paper, he demonstrated the utility of polylysine and other engineered peptides that could adhere to cells, embryos, and intracellular structures for various microscopic applications and purifications. This technology is now widely applied and has solved the problem of holding cells for imaging. His team also published findings on imaging calcium and other ion transients in egg, embryos and cells, as well as dynamic architectural alternations during fertilization and cell division.
Transgenesis and stem cells
His more recent research has focused on the use of human and primate stem cells to determine the potential of stem cell-based medical therapies and better understand cell and human development; the study of genetic versus epigenetic causes for human disease; cloned transgenic disease modeling .
Bioethical considerations
Schatten has also published on the topic of scientific ethics, including a 1998 piece on bio-ethical aspects of ART, "Art before Science?", in the Journal of Law, Medicine & Ethics as well as a 2002 article in Nature Cell Biology titled "Safeguarding ART". Soon after, Schatten helped expose cloning frauds both by the Raelians and by a Korean lab he had links to. More recently, in 2009, he commented on the utilities and limitations of human disease modeling in genetically modified monkeys in the journal Nature.
Research misbehavior
In 2005, Schatten came to widespread media attention when he broke off his 20-month collaboration with Hwang Woo-suk, a Korean stem cell researcher, after reporting first ethical, and later scientific, lapses. In 2004 and 2005, Hwang claimed that his lab at the Seoul National University had successfully extracted stem cells from cloned human embryos, a statement later proved false. Science retracted both the 2004 article, in which Schatten had no involvement, and the 2005 article, on which he was listed as an author, and which he helped publicize. Schatten also received money from Hwang. Schatten called for an investigation by his university, the University of Pittsburgh, in 2005. Finished in February 2006, the investigation committee concluded that "Dr. Schatten shirked these responsibilities, a serious failure that facilitated the publication of falsified experiments in Science magazine. While this failure would not strictly constitute research misconduct as narrowly defined by University of Pittsburgh policies, it would be an example of research misbehavior."
Research mentoring
Schatten has trained twenty doctoral and thirty postdoctoral fellows and he serves on the executive board of UNESCO’s International Cell Research Organization, a body devoted exclusively to research career training and mentorship. With Roger Pedersen, Schatten established "Frontiers in Human Embryonic Stem Cell Research", an NIH-sponsored advanced training course for new and established investigators. As with his National Institute of Child Health and Human Development-sponsored "Frontiers in Reproduction" course at the Woods Hole laboratory, this endeavor brings physician-scientists together with non-clinical counterparts for full-time, side-by-side, hands-on research training.