Transgenic ungulate compositions and methods
First Claim
Patent Images
1. A method for making a chimeric ungulate comprising:
- (a) introducing at least one a cultured ungulate embryonic stem cell from a cultured ungulate embryonic stem cell line, wherein said cells grow in multilayers and wherein said embryonic stem cells have a rounded shape as observed with the light microscope, a diameter of approximately 8–
15 microns, and a cytoplasmic to nuclear diameter ratio of approximately 10–
25;
75–
90 as show in FIG. 2, wherein the ratio is approximated by the cytoplasmic diameter from the periphery of the nucleus to the end of the cell, to the diameter of the nucleus, and said cell has a first genetic complement, into a recipient embryo of the same species as the embryonic stem cell, said recipient embryo having a second genetic complement which differs from the first genetic complement, in at least one gene, to form a chimeric ungulate embryo; and
(b) placing the chimeric ungulate embryo in an environment suitable for the completion of development to form a chimeric ungulate.
1 Assignment
0 Petitions
Accused Products
Abstract
Transgenic ungulates and compositions and methods for making and using same, are provided. Central to the invention are porcine, bovine, ovine and caprine embryonic stem cell lines and methods for establishing them. Cells of such lines are transformed with exogenous genetic material of interest and then used to provide chimeric ungulates confirmed by genetic markers which have germ cells comprising the exogenous genetic material. The chimeric ungulates are bred to provide transgenic ungulates. The transgenic animals of the invention may show improved qualities and can be used to provide human proteins or peptide hormones or can be used as xenograft donors.
7 Citations
8 Claims
-
1. A method for making a chimeric ungulate comprising:
-
(a) introducing at least one a cultured ungulate embryonic stem cell from a cultured ungulate embryonic stem cell line, wherein said cells grow in multilayers and wherein said embryonic stem cells have a rounded shape as observed with the light microscope, a diameter of approximately 8–
15 microns, and a cytoplasmic to nuclear diameter ratio of approximately 10–
25;
75–
90 as show inFIG. 2 , wherein the ratio is approximated by the cytoplasmic diameter from the periphery of the nucleus to the end of the cell, to the diameter of the nucleus, and said cell has a first genetic complement, into a recipient embryo of the same species as the embryonic stem cell, said recipient embryo having a second genetic complement which differs from the first genetic complement, in at least one gene, to form a chimeric ungulate embryo; and(b) placing the chimeric ungulate embryo in an environment suitable for the completion of development to form a chimeric ungulate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification