Nucleic acid encoding the mature .alpha. chain of inhibin and method for synthesizing polypeptides using such nucleic acid
First Claim
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1. Non-chromosomal DNA encoding an inhibin α
- chain polypeptide selected from the group consisting ofthe porcine inhibin α
chain having the sequence shown as residues 231-364 of SEQ ID NO;
29,a variant inhibin α
chain having a sequence identical to residues 231-364 of SEQ ID NO;
29 except for the replacement of Asn266 by Gln,the human inhibin α
chain having the sequence shown as residues 218-351 of SEQ ID NO;
39,a variant inhibin α
chain having a sequence identical to residues 218-351 of SEQ ID NO;
39 except for the replacement of Asn237 by Gln, anda mature mammalian inhibin α
chain polypeptide,wherein DNA encoding said mammalian polypeptide has the sequence of DNA which is specifically identified on a Southern blot of an ovarian cDNA library using any 64-nucleotide probe within residues 762-1166 of SEQ ID NO;
30 or within residues 654-1058 of SEQ ID NO;
40,and wherein said mammalian inhibin α
chain polypeptide is capable, not by itself but when combined with a mature mammalian inhibin β
chain polypeptide, of inhibiting the basal release of follicle stimulating hormone, but not of luteinizing hormone, from anterior pituitary cells.
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Abstract
DNA encoding the prepro inhibin α and β chains has been isolated. This DNA is ligated into expression vectors and used to transform host cells for the preparation of inhibin or activin. Also provided are prohormone domains and other inhibin α or β chain derivatives having therapeutic or diagnostic interest. The compositions provided herein are useful in the manipulation of fertility in animals.
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17 Claims
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1. Non-chromosomal DNA encoding an inhibin α
- chain polypeptide selected from the group consisting of
the porcine inhibin α
chain having the sequence shown as residues 231-364 of SEQ ID NO;
29,a variant inhibin α
chain having a sequence identical to residues 231-364 of SEQ ID NO;
29 except for the replacement of Asn266 by Gln,the human inhibin α
chain having the sequence shown as residues 218-351 of SEQ ID NO;
39,a variant inhibin α
chain having a sequence identical to residues 218-351 of SEQ ID NO;
39 except for the replacement of Asn237 by Gln, anda mature mammalian inhibin α
chain polypeptide,wherein DNA encoding said mammalian polypeptide has the sequence of DNA which is specifically identified on a Southern blot of an ovarian cDNA library using any 64-nucleotide probe within residues 762-1166 of SEQ ID NO;
30 or within residues 654-1058 of SEQ ID NO;
40,and wherein said mammalian inhibin α
chain polypeptide is capable, not by itself but when combined with a mature mammalian inhibin β
chain polypeptide, of inhibiting the basal release of follicle stimulating hormone, but not of luteinizing hormone, from anterior pituitary cells. - View Dependent Claims (2, 3, 4)
- chain polypeptide selected from the group consisting of
-
5. A replicable vector comprising DNA encoding an inhibin α
- chain polypeptide selected from the group consisting of
the porcine inhibin α
chain having the sequence shown as residues 231-364 of SEQ ID NO;
29,a variant inhibin α
chain having a sequence identical to residues 231-364 of SEQ ID NO;
29 except for the replacement of Asn266 by Gln,the human inhibin α
chain having the sequence shown as residues 218-351 of SEQ ID NO;
39,a variant inhibin α
chain having a sequence identical to residues 218-351 of SEQ ID NO;
39 except for the replacement of Asn237 by Gln, anda mature mammalian inhibin α
chain polypeptide,wherein DNA encoding said mammalian polypeptide has the sequence of DNA which is specifically identified on a Southern blot of an ovarian cDNA library using any 65-nucleotide probe within residues 762-1166 of SEQ ID NO;
30 or within residues 654-1058 of SEQ ID NO;
40,and wherein said mammalian inhibin α
chain polypeptide is capable, not by itself but when combined with a mature mammalian inhibin β
chain polypeptide, of inhibiting the basal release of follicle stimulating hormone, but not of luteinizing hormone, from anterior pituitary cells. - View Dependent Claims (6, 7)
- chain polypeptide selected from the group consisting of
-
8. A host cell transformed with a replicable vector comprising DNA encoding an inhibin α
- chain polypeptide selected from the group consisting of
the porcine inhibin α
chain having the sequence shown as residues 231-364 of SEQ ID NO;
29,a variant inhibin α
chain having a sequence identical to residues 231-364 of SEQ ID NO;
29 except for the replacement of Asn266 by Gln,the human inhibin α
chain having the sequence shown as residues 218-351 of SEQ ID NO;
39,a variant inhibin α
chain having a sequence identical to residues 218-351 of SEQ ID NO;
39 except for the replacement of Asn237 by Gln, anda mature mammalian inhibin α
chain polypeptide,wherein DNA encoding said mammalian polypeptide has the sequence of DNA which is specifically identified on a Southern blot of an ovarian cDNA library using any 64-nucleotide probe within residues 762-1166 of SEQ ID NO;
30 or within residues 654-1058 of SEQ ID NO;
40,and wherein said mammalian inhibin α
chain polypeptide is capable, not by itself but when combined with a mature mammalian inhibin β
chain polypeptide, of inhibiting the basal release of follicle stimulating hormone, but not of luteinizing hormone, from anterior pituitary cells. - View Dependent Claims (9, 10)
- chain polypeptide selected from the group consisting of
-
11. A method for expressing a mature inhibin α
- chain polypeptide, comprising the steps of
(a) constructing a vector that comprises a nucleic acid selected from the group consisting of DNA encoding the porcine inhibin α
chain having the sequence shown as residues 231-364 of SEQ ID NO;
29,DNA encoding a variant inhibin α
chain having a sequence identical to residues 231-364 of SEQ ID NO;
29 except for the replacement of Asn266 by Gln,DNA encoding the human inhibin α
chain having the sequence shown as residues 218-351 of SEQ ID NO;
39,DNA encoding a variant inhibin α
chain having a sequence identical to residues 218-351 of SEQ ID NO;
39 except for the replacement of Asn237 by Gln, andDNA encoding a mature mammalian inhibin α
chain polypeptide,wherein DNA encoding said mammalian polypeptide has the sequence of DNA which is specifically identified on a Southern blot of an ovarian cDNA library using any 64-nucleotide probe within residues 762-1166 of SEQ ID NO;
30 or within residues 654-1058 of SEQ ID NO;
40,and wherein said mammalian inhibin α
chain polypeptide is capable, not by itself but when combined with a mature mammalian inhibin β
chain polypeptide, of inhibiting the basal release of follicle stimulating hormone, but not of luteinizing hormone, from anterior pituitary cells;(b) transforming a host cell with the vector; and (c) culturing the transformed cell under conditions appropriate for the expression of said polypeptide. - View Dependent Claims (12, 13, 14, 15, 16, 17)
- chain polypeptide, comprising the steps of
Specification