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Development, Vol 107, Issue 2 407-411, Copyright © 1989 by Company of Biologists

JOURNAL ARTICLES

Nuclear transplantation of male primordial germ cells in the mouse

Y Tsunoda, T Tokunaga, H Imai and T Uchida
National Institute of Animal Industry, Ibaraki, Japan.

We examined the developmental ability of enucleated eggs receiving embryonic nuclei and male primordial germ cells (PGCs) in the mouse. Reconstituted eggs developed into the blastocyst stage only when an earlier 2-cell nucleus was transplanted (36%) but very rarely if the donor nucleus was derived from a later 2-cell, 8-cell, or inner cell mass of a blastocyst (0-3%). 54-100%, 11-67%, 6-43% and 6-20% of enucleated eggs receiving male PGCs developed to 2-cell, 4-cell, 8-cell and blastocyst stage, respectively, in culture. The overall success rate when taking into account the total number of attempts at introducing germ cells was actually 0-6%. Live fetuses were not obtained after transfer of reconstituted eggs to recipients, although implantation sites were observed. The developmental ability of reconstituted eggs in relation to embryonic genome activation and genomic imprinting is discussed.


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© The Company of Biologists Ltd 1989