Transgenic animals expressing heparanase and uses thereof
First Claim
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1. A transgenic non-human animal whose genome comprises an exogenous polynucleotide sequence integrated into said genome, said exogenous polynucleotide sequence including a promoter active in tissues of the non-human, and a region encoding a human heparanase, wherein said promoter and said region encoding human heparanase are operably linked in said exogenous polynucleotide such that human heparanase is expressed in at least a portion of the cells of the non-human animal.
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Abstract
A transgenic non-human animal expressing heparanase from a transgene, methods for its preparation, compositions-of-matter derived therefrom and uses thereof.
102 Citations
28 Claims
- 1. A transgenic non-human animal whose genome comprises an exogenous polynucleotide sequence integrated into said genome, said exogenous polynucleotide sequence including a promoter active in tissues of the non-human, and a region encoding a human heparanase, wherein said promoter and said region encoding human heparanase are operably linked in said exogenous polynucleotide such that human heparanase is expressed in at least a portion of the cells of the non-human animal.
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21. A composition of matter comprising milk derived from a non-human transgenic mammal, said milk having detectable human heparanase activity.
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22. A composition of matter comprising egg yolk and/or white from a transgenic avian, said egg yolk and/or white having detectable human heparanase activity.
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23. A method of producing recombinant human heparanase, the method comprising the steps of:
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(a) obtaining a transgenic non-human mammal having mammary glands, whose genome comprises an exogenous polynucleotide sequence integrated into said genome, said exogenous polynucleotide sequence including a promoter active in tissues of the non-human mammal, and a region encoding a human heparanase, wherein said promoter and said region encoding human heparanase are operably linked in said exogenous polynucleotide such that the recombinant human heparanase is secreted into milk being produced by said mammary glands;
(b) milking said non-human mammal so as to obtain milk containing the recombinant human heparanase; and
(c) purifying the recombinant human heparanase from said milk. - View Dependent Claims (24, 25)
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26. A method of producing recombinant human heparanase, the method comprising the steps of:
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(a) obtaining a transgenic female avian having egg producing cells whose genome comprises an exogenous polynucleotide sequence integrated into said genome, said exogenous polynucleotide sequence including a promoter active in tissues of said transgenic female avian, and a region encoding a human heparanase, wherein said promoter and said region encoding human heparanase are operably linked in said exogenous polynucleotide such that the recombinant human heparanase is secreted into eggs being produced by said egg producing cells;
(b) collecting eggs laid by said transgenic female avian so as to obtain eggs containing the recombinant human heparanase; and
(c) purifying the recombinant human heparanase from said eggs. - View Dependent Claims (27, 28)
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Specification