Cloning pigs using non-quiescent differentiated donor cells...

Multicellular living organisms and unmodified parts thereof and – Method of making a transgenic nonhuman animal – Via microinjection of a nucleus into an embryo – egg cell – or...

Reexamination Certificate

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C800S008000, C800S017000, C800S281000, C800S323200, C800S319000

Reexamination Certificate

active

09394902

ABSTRACT:
An improved method of nuclear transfer involving the transplantation of donor differentiated pig cell nuclei into enucleated pig oocytes is provided. The resultant nuclear transfer units are useful for multiplication of genotypes and transgenic genotypes by the production of fetuses and offspring. Production of genetically engineered or transgenic pig embryos, fetuses and offspring is facilitated by the present method since the differentiated cell source of the donor nuclei can be genetically modified and clonally propagated.

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patent: 6235969 (2001-05-01), Stice et al.
patent: 99/01164 (1999-01-01), None
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Kato et.al.; Nuclear Transplantation of Mouse Fetal Germ Cells Into Enucleated Two-Cell Embryos, 1992, Theriogenology 37:769-778.
Fodor et.al.; Expression of a Functional human complement inhibitor in a transgenic pig as a model for the prevention of xenogeneiic hyperacute organ rejection, 1994, Proc. Natl. Acad. Sci., vol. 91: 11153-11157.
Strojek et. al.; A Method for Cultivating Morphologically Undifferentiated Embryonic Stem Cells From Porcine Blastocysts, 1990, Theriogenology, vol. 33, No. 4: 901-913.
Chang et.al.; Autologous Fibroblast Implantation Feasibility and Potential Problems in Gene Replacement Therapy, 1990, Mol. Biol. Med. 7:461-470.
Renard et al. Theriogenology, 57:203-222 (2002).
Campbell et al. Cloning & Stem Cells, 3 :201-208 (2001).

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