Receptors as novel inhibitors of vascular endothelial growth factor activity and processes for their production
DCFirst Claim
1. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein comprising tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3, wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 comprises an amino acid sequence selected from the group consisting of:
- (a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);
(b) an amino acid sequence consisting essentially of the Ig-like domain 1 of the flt-1 tyrosine kinase receptor;
(c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and
(d) an amino acid sequence consisting of the Ig-like domain 1 of the KDR tyrosine kinase receptor;
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 comprises an amino acid sequence selected from the group consisting of;
(e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);
(f) an amino acid sequence consisting essentially of the Ig-like domain 2 of the flt-1 tyrosine kinase receptor;
(g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and
(h) an amino acid sequence consisting essentially of the Ig-like domain 2 of the KDR tyrosine kinase receptor; and
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 comprises an amino acid sequence selected from the group consisting of;
(i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);
(j) an amino acid sequence consisting essentially of the Ig-like domain 3 of the flt-1 tyrosine kinase receptor;
(k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and
(l) an amino acid sequence consisting essentially of the Ig-like domain 3 of the KDR tyrosine kinase receptor; and
wherein said VEGF receptor protein possesses at least one of (a), (b), (e), (f), (i) or (j) and at least one of (c), (d), (g), (h), (k) or (l).
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Abstract
The present invention is directed to novel chimeric VEGF receptor proteins comprising amino acid sequences derived from the vascular endothelial growth factor (VEGF) receptors flt-1 and KDR, including the murine homologue to the human KDR receptor FLK-1, wherein said chimeric VEGF receptor proteins bind to VEGF and antagonize the endothelial cell proliferative and angiogenic activity thereof. The present invention is also directed to nucleic acids and expression vectors encoding these chimeric VEGF receptor proteins, host cells harboring such expression vectors, pharmaceutically acceptable compositions comprising such proteins, methods of preparing such proteins and to methods utilizing such proteins for the treatment of conditions associated with undesired vascularization.
165 Citations
30 Claims
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1. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein comprising tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3, wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 comprises an amino acid sequence selected from the group consisting of:
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(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) an amino acid sequence consisting essentially of the Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) an amino acid sequence consisting of the Ig-like domain 1 of the KDR tyrosine kinase receptor; wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 comprises an amino acid sequence selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) an amino acid sequence consisting essentially of the Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) an amino acid sequence consisting essentially of the Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 comprises an amino acid sequence selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) an amino acid sequence consisting essentially of the Ig-like domain 3 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) an amino acid sequence consisting essentially of the Ig-like domain 3 of the KDR tyrosine kinase receptor; and wherein said VEGF receptor protein possesses at least one of (a), (b), (e), (f), (i) or (j) and at least one of (c), (d), (g), (h), (k) or (l). - View Dependent Claims (2, 3, 4, 5, 6, 7, 23, 24, 25, 26, 27, 28, 29, 30)
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8. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein consisting of tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3 fused to a heterologous polypeptide,
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 is selected from the group consisting of: -
(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) an amino acid sequence consisting essentially of the Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) an amino acid sequence consisting essentially of the Ig-like domain 1 of the KDR tyrosine kinase receptor; wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 is selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) an amino acid sequence consisting essentially of the Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) an amino acid sequence consisting essentially of the Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 is selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) an amino acid sequence consisting essentially of the Ig-like domain 3 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) an amino acid sequence consisting of the Ig-like domain 3 of the KDR tyrosine kinase receptor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein consisting of tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3,
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 is selected from the group consisting of: -
(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) an amino acid sequence consisting essentially of the Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) an amino acid sequence consisting essentially of the Ig-like domain 1 of the KDR tyrosine kinase receptor); wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 is selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) an amino acid sequence consisting essentially of the Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) an amino acid sequence consisting essentially of the Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 is selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) an amino acid sequence consisting essentially of the Ig-like domain 3 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) an amino acid sequence consisting essentially of the Ig-like domain 3 of the KDR tyrosine kinase receptor. - View Dependent Claims (16, 17, 18, 19)
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20. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein comprising tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3, wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 comprises an amino acid sequence selected from the group consisting of:
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(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the KDR tyrosine kinase receptor; wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 comprises an amino acid sequence selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 comprises an amino acid sequence selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) a functionally equivalent amino acid sequence variant of Ig-like domain 3 of the KDR tyrosine kinase receptor; and wherein said VEGF receptor protein possesses at least one of (a), (b), (e), (f), (i) or (j) and at least one of (c), (d), (g), (h), (k) or (l), wherein said VEGF receptor protein possesses no more than one of (b), (d), (f), (h), (j) and (l), and wherein said functionally equivalent amino acid sequence variant is obtained by a single modification selected from the group consisting of a deletion of 1 to 7 residues, an insertion of 1 to 5 residues, and a substitution of 1 residue.
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21. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein consisting of tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3 fused to a heterologous polypeptide,
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 comprises an amino acid sequence selected from the group consisting of: -
(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the KDR tyrosine kinase receptor; wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 comprises an amino acid sequence selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 comprises an amino acid sequence selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) a functionally equivalent amino acid sequence variant of Ig-like domain 3 of the KDR tyrosine kinase receptor; and wherein said VEGF receptor protein possesses no more than one of (b), (d), (f), (h), (j) and (l), and wherein said functionally equivalent amino acid sequence variant is obtained by a single modification selected from the group consisting of a deletion of 1 to 7 residues, an insertion of 1 to 5 residues, and a substitution of 1 residue.
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22. A VEGF receptor protein that is capable of binding to VEGF and thereby exerting an inhibitory effect thereon, said VEGF receptor protein consisting of tyrosine kinase receptor-derived immunoglobulin-like domains 1, 2 and 3,
wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 1 is selected from the group consisting of: -
(a) amino acids 32-128 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(b) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (c) amino acids 32-118 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(d) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the KDR tyrosine kinase receptor; wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 2 comprises an amino acid sequence selected from the group consisting of; (e) amino acids 134-226 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(f) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the flt-1 tyrosine kinase receptor; (g) amino acids 124-220 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(h) a functionally equivalent amino acid sequence variant of Ig-like domain 2 of the KDR tyrosine kinase receptor; and wherein said tyrosine kinase receptor-derived immunoglobulin-like domain 3 comprises an amino acid sequence selected from the group consisting of; (i) amino acids 232-331 of the flt-1 tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
1);(j) a functionally equivalent amino acid sequence variant of Ig-like domain 1 of the flt-1 tyrosine kinase receptor; (k) amino acids 226-327 of the KDR tyrosine kinase receptor shown in FIG. 1 (SEQ ID NO;
2); and(l) a functionally equivalent amino acid sequence variant of Ig-like domain 3 of the KDR tyrosine kinase receptor; and wherein said VEGF receptor protein possesses no more than one of (b), (d), (f), (h), (j) and (l), and wherein said functionally equivalent amino acid sequence variant is obtained by a single modification selected from the group consisting of a deletion of 1 to 7 residues, an insertion of 1 to 5 residues, and a substitution of 1 residue.
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Specification