Transgenic animals secreting proteins into milk
First Claim
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1. A method of producing a recombinant protein comprising the steps of:
- (a) inserting into an embryo of a nonhuman mammal a DNA construct comprising a gene encoding said protein, said gene being under transcriptional control of a milk protein promoter sequence that does not naturally control transcription of said gene, said DNA construct further comprising a DNA sequence encoding a signal peptide for enabling secretion of said protein into the milk of said mammal,(b) transferring the embryo to a female mammal of the same species,(c) allowing said embryo to develop into an adult nonhuman mammal whose genome comprises said DNA construct,(d) inducing lactation in said mammal or transgenic progeny of said mammal, wherein the progeny'"'"'s genome comprises said DNA construct,(e) collecting milk from said lactating mammal or lactating progeny, and(f) isolating said protein from said collected milk.
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Abstract
A DNA sequence containing a gene encoding a protein, the gene being under the transcriptional control in the DNA sequence of a mammalian milk protein promoter which does not naturally control the transcription of the gene, such DNA sequence including DNA enabling secretion of the protein.
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Citations
41 Claims
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1. A method of producing a recombinant protein comprising the steps of:
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(a) inserting into an embryo of a nonhuman mammal a DNA construct comprising a gene encoding said protein, said gene being under transcriptional control of a milk protein promoter sequence that does not naturally control transcription of said gene, said DNA construct further comprising a DNA sequence encoding a signal peptide for enabling secretion of said protein into the milk of said mammal, (b) transferring the embryo to a female mammal of the same species, (c) allowing said embryo to develop into an adult nonhuman mammal whose genome comprises said DNA construct, (d) inducing lactation in said mammal or transgenic progeny of said mammal, wherein the progeny'"'"'s genome comprises said DNA construct, (e) collecting milk from said lactating mammal or lactating progeny, and (f) isolating said protein from said collected milk. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of producing a recombinant protein comprising the steps of:
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(a) providing an adult nonhuman mammal developed from an embryo of a nonhuman mammal, said embryo comprising a DNA construct comprising a gene encoding said protein, said gene being under transcriptional control of a milk protein promoter sequence that does not naturally control transcription of said gene, said DNA construct further comprising a DNA sequence encoding a signal peptide for enabling secretion of said protein into the milk of said mammal, wherein the genome of said mammal comprises said DNA construct, (b) inducing lactation in said mammal, (c) collecting milk from said lactating mammal, and (d) isolating said protein from said collected milk. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of producing a recombinant protein comprising the steps of:
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(a) providing a lactating transgenic mammal whose genome comprises a DNA construct comprising a gene encoding said recombinant protein, said gene being under transcriptional control of a milk protein promoter sequence that does not naturally control transcription of said gene, said DNA construct further comprising a DNA sequence encoding a signal peptide for enabling secretion of said recombinant protein into the milk of said mammal, (b) collecting milk from said lactating mammal, and (c) isolating said recombinant protein from said collected milk. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification