Multivalent fibronectin based scaffold domain proteins
First Claim
Patent Images
1. A polypeptide comprising:
- (a) an N-terminal domain comprising a first fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), and (iii) binds to insulin-like growth factor-I receptor (IGF-IR) with a KD of less than 500 nM; and
(b) a C-terminal domain comprising a second fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), and (iii) binds to vascular endothelial growth factor receptor 2 (VEGFR2) with a KD of less than 500 nM;
wherein the first and second 10Fn3 domains are linked via a polypeptide selected from a glycine-serine based linker, a glycine-proline based linker, a proline-alanine based linker or the amino acid sequence of SEQ ID NO;
20, wherein the polypeptide comprises an amino acid sequence at least 85% identical to the amino acid sequence of any one of SEQ ID NOs;
8-11, 29-31, and 63-70.
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Abstract
The present invention relates to multivalent polypeptides comprising at least two fibronectin scaffold domains connected via a polypeptide linker. The invention also relates to multivalent polypeptides for use in diagnostic, research and therapeutic applications. The invention further relates to cells comprising such proteins, polynucleotide encoding such proteins or fragments thereof, and to vectors comprising the polynucleotides encoding the innovative proteins.
141 Citations
29 Claims
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1. A polypeptide comprising:
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(a) an N-terminal domain comprising a first fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), and (iii) binds to insulin-like growth factor-I receptor (IGF-IR) with a KD of less than 500 nM; and(b) a C-terminal domain comprising a second fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), and (iii) binds to vascular endothelial growth factor receptor 2 (VEGFR2) with a KD of less than 500 nM;wherein the first and second 10Fn3 domains are linked via a polypeptide selected from a glycine-serine based linker, a glycine-proline based linker, a proline-alanine based linker or the amino acid sequence of SEQ ID NO;
20, wherein the polypeptide comprises an amino acid sequence at least 85% identical to the amino acid sequence of any one of SEQ ID NOs;
8-11, 29-31, and 63-70. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A polypeptide comprising:
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(a) an N-terminal domain comprising a first fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), (iii) binds to vascular endothelial growth factor receptor 2 (VEGFR2) with a KD of less than 500 nM, and (iv) is at least 85% identical to SEQ ID NO;
40; and(b) a C-terminal domain comprising a second fibronectin type III tenth domain (10Fn3), wherein the 10Fn3 domain (i) comprises a loop, AB;
a loop, BC;
a loop, CD;
a loop, DE;
a loop EF; and
a loop FG;
(ii) has at least one loop selected from loop BC, DE, and FG with an altered amino acid sequence relative to the sequence of the corresponding loop of the human 10Fn3 domain (SEQ ID NO;
1), (iii) binds to insulin-like growth factor-I receptor (IGF-IR) with a KD of less than 500 nM, and (iv) is at least 85% identical to SEQ ID NO;
35;wherein the first and second 10Fn3 domains are linked via a polypeptide selected from a glycine-serine based linker, a glycine-proline based linker, a proline-alanine based linker or the amino acid sequence of SEQ ID NO;
20. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification