title: Cloning of ES cells and mice by nuclear transfer.
abstract: We have been able to develop a stable nuclear transfer (NT) method in the mouse, in which donor nuclei are directly injected into the oocyte using a piezo-actuated micromanipulator. Although the piezo unit is a complex tool, once mastered it is of great help not only in NT experiments, but also in almost all other forms of micromanipulation. Using this technique, embryonic stem (ntES) cell lines established from somatic cell nuclei can be generated relatively easily from a variety of mouse genotypes and cell types. Such ntES cells can be used not only for experimental models of human therapeutic cloning but also as a means of preserving mouse genomes instead of preserving germ cells. Here, we describe our most recent protocols for mouse cloning.
authors.affiliation: Center for Developmental Biology RIKEN Kobe, Kobe, Japan.
authors.forename: Sayaka
authors.initials: S
authors.lastname: Wakayama
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kishigami
authors.forename: Teruhiko
authors.initials: T
authors.lastname: Wakayama
mesh_terms: D000818:Animals; D019976:Cloning, Organism / Q000295:instrumentation / Q000379:methods*; D046149:Embryo Culture Techniques / Q000379:methods*; D053595:Embryonic Stem Cells / Q000502:physiology*; D005260:Female; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D008813:Mice, Inbred ICR; D053652:Nuclear Transfer Techniques; D011247:Pregnancy