PRIMATE-SCIENCE RESEARCH HIGHLIGHTS "UW scientist will continue ES cell work with monkeys" (courtesy Wisconsin Regional Primate Research Center) The Nov. 6 issue of Science introduces the breakthrough derivation and culture of human embryonic stem cells by James Thomson, Ph.D., at the University of Wisconsin-Madison. Thomson's accomplishment with human ES cells was not conducted at the Wisconsin Regional Primate Research Center, but rather in a separate lab across campus and with private funding. Nonetheless, the work was in large part the fruit of his extensive experience working with nonhuman primate cells over the past five years. The research brings us closer to the possibility that researchers may someday be able to genetically engineer ES cells for transplanting in diseased human tissues, where they would be able to grow into healthy cells while remaining free from attack by patients' immune systems. Although Thomson's breakthrough with human cells received widespread global media attention, it is important to note that his work with monkey ES cells will continue. "Any human ES cell-based therapies will be completely novel and will require extensive testing to demonstrate safety and efficacy," Thomson says. "The rhesus monkey and rhesus ES cells will provide an appropriate model for the development of these new transplantation therapies." Thomson is already establishing collaborations to examine the derivation of neural and blood cells from rhesus ES cells. Transplantation of these specific derivatives could be done in rhesus monkeys to develop treatments for Parkinson's disease or leukemia. ### References: Thomson, J.A., J Itskovitz-Eldor, S.S. Shapiro, M.A. Waknitz, J.J. Swiergiel, V.S. Marshall, and J.M. Jones. 1998. Embryonic stem cell lines derived form human blastocysts. Science. (Nov. 6) 282:1145-1147. Thomson, J.A., and V.S. Marshall. 1998. Primate Embryonic Stem Cells. Curr. Top. Dev. Biol. 38:133-165. Thomson, J.A., V.S. Marshall, and J.Q. Trojanowski. 1998. Neural differentiation of rhesus embryonic stem cells. APMIS. 106(1):149-156. Thomson, J.A., J. Kalishman, T.G. Golos, M. Durning, C.P. Harris, R.A. Becker, and J.P. Hearn. 1995. Isolation of a primate embryonic stem cell line. Proc. Natl. Acad. Sci. USA. 92:7844-7848. **************************** P-T Research Highlights appears every other week and focuses broadly on research involving non-human primates. Coverage includes biomedicine, behavior, conservation and veterinary science. Please submit highlights for this column to Larry Jacobsen, P-T Research Highlights editor, at jacobsen@primate.wisc.edu. A 300-word limit and lay-language style are recommended. P-T Research Highlights are supported by a grant from the National Institutes of Health, National Center for Research Resources. Copyright 1998, Wisconsin Regional Primate Research Center. No portion of this highlight may be copied or redistributed without the consent of the editor. ****************************