Factors Involving Reprogramming in Cloned Embryos

  • Kim, N. H (Department of Animal Science, Chungbuk National University) ;
  • X. S. Cui (Department of Animal Science, Chungbuk National University) ;
  • Kim, I. H. (Department of Veterinary Science, Chungbuk National University) ;
  • Y. M. Han (Laboratory of Developmental and Differentiation, Korea Research Institute of Bioscience and Biotechnology.)
  • Published : 2003.12.01

Abstract

Although nuclear transfer (NT) techniques are used to clone animals, its efficiency is very low. Moreover, nuclear transfer has resulted in offspring with severe developmental problems, probably due to incomplete nuclear reprogramming. Nuclear reprogramming is characterized by functional modification of the transferred nucleus to allow it to direct normal embryo development with the potential to grow to term. Although the nature of the reprogramming factor(s) in mammals is not clear, various nuclear as well as cytoplasmic components are involved in the processes. In this article we review recent data on factors involved in the nuclear reprogramming of cloned embryos.

Keywords

References

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