摘要:
The present invention provides an antibody of the class IgG4 comprising at least one heavy chain which comprises a CH1 domain and a hinge region, wherein in each heavy chain: a. the inter-chain cysteine at position 127, numbered according to the Kabat numbering system, in the CH1 domain is substituted with another amino acid; and b. one or more of the amino acids positioned in the upper hinge region is substituted with cysteine.
摘要:
The present invention provides an antibody of the class IgG4 comprising at least one heavy chain which comprises a CH1 domain and a hinge region, wherein in each heavy chain: a. the inter-chain cysteine at position 127, numbered according to the Kabat numbering system, in the CH1 domain is substituted with another amino acid; and b. one or more of the amino acids positioned in the upper hinge region is substituted with cysteine.
摘要:
The present invention provides a multivalent antibody or a heavy/light chain component thereof comprising: a heavy chain comprising a constant region fragment, said constant region fragment located between two variable domains which are not a cognate pair, the heavy chain further comprising an Fc region with at least one domain selected from CH2, CH3 and combinations thereof, with the proviso that the heavy chain contains no more than one CH1 domain and only contains two variable domains, and a light chain comprising a constant region fragment located between two variable domains which are not a cognate pair, wherein said heavy and light chains are aligned to provide a first binding site formed by a first cognate pair of variable domains and a second binding site formed by a second cognate pair of variable domains.
摘要:
The present disclosure relates to a multi-specific antibody molecule comprising or consisting of: a) a polypeptide chain of formula (I): VH-CH1-CH2-CH3-X-(V1)p; and b) a polypeptide chain of formula (II): VL-CL-Y-(V2)q and pharmaceutical formulations comprising, for example for use in treatment. The disclosure also provides polynucleotide sequences encoding said multi-specific antibody molecules, vectors comprising the polynucleotides and host cells comprising said vectors and/or polynucleotide sequences. There is a provided a method of expressing a multi-specific antibody molecule of the present disclosure from a host cell.
摘要:
The present invention provides dual specificity antibody fusion proteins comprising an antibody Fab or Fab′ fragment with specificity for an antigen of interest, the fragment being fused to at least one single domain antibody which has specificity for a second antigen of interest.
摘要:
A multivalent antibody fusion protein comprising: a heavy chain comprising, in sequence from the N-terminal, a variable domain nominally VH1, a CH1 region and a further variable domain nominally VH2, a light chain comprising, in sequence from the N-terminal, a variable domain nominally VL1, a CL domain and a variable domain nominally VL2, wherein said heavy and light chains are aligned to provide a first binding site formed by a first variable domain pair of VH1 and VL1 and a second binding site formed by a second variable domain pair of VH2 and VL2, wherein there is a disulfide bond between a variable domain pair forming a binding site, and said fusion protein is conjugated to a PEG polymer.
摘要:
The present invention relates to a new class of modified antibody fragments. The present invention provides an antibody fragment to which one or more effector molecules is attached characterized in that the native interchain disulphide bond between the heavy (CHI) and light (CL) chain constant regions is absent and the heavy chain (CHI) and light chain (CL) constant regions are linked by an interchain disulphide bond between a pair of engineered cysteines, one in the light chain constant (CL) region and the other in the heavy chain constant (CHI) region.
摘要:
The present disclosure provides a binding protein comprising: a polypeptide heavy chain comprising: VH1—(X1)n-VH2—CH (X2)y wherein VH1 is a first variable domain, VH2 is a second variable domain, CH is a constant domain, X1 represents an amino acid or peptide, X2 represents an Fc region, n is 0 or 1 and y is independently 1 or 2, and a polypeptide light chain comprising: VL1-(X1)n-VL2-C wherein VL1 is a first variable domain, VL2 is a second variable domain, C is a constant domain, X1 represents an amino acid or peptide and n is 0 or 1, wherein the heavy chain and light chain are aligned such that VH1 and VL1 form a first binding domain, and VH2 and VL2 form a second binding domain and wherein: there is a disulfide bond between VH1 and VL1, and/or there is a disulfide bond between VH2 and VL2, and use thereof in treatment.
摘要:
The present disclosure provides an antibody or antibody fragment comprising at least one Fab molecule, wherein the light chain variable region, VL and the heavy chain region, VH of the Fab molecule are linked by one or more disulfide bonds, and use of the same in treatment or prophylaxis.
摘要:
The present invention provides a recombinant gram-negative bacterial cell comprising a mutant spr gene encoding a spr protein having a mutation at one or more amino acids selected from D133, H145, H157, N31, R62, I70, Q73, C94, S95, V98, Q99, R100, L108, Y115, V135, L136, G140, R144 and G147 and wherein the cell has reduced Tsp protein activity compared to a wild-type cell.