Abstract: Compounds of formula (IA) or (IB) are inhibitors of CD80 and useful in immunomodulation therapy: wherein Ar represents an optionally substituted monocyclic or bicyclic aromatic or heteroaromatic group having from 5 to 10 ring atoms; R1 and R2 independently represent H, or C1-C6 alkyl; R3 represents H; F; Cl; Br; —NO2; —CN; C1-C6 alkyl optionally substituted by F or CI; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may be interrupted by one or more —O—, —S— or —N(R8)— radicals wherein R8 represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —CF3;—OH; —SH; —NR8R8 wherein e

Abstract: Compounds of formula (IA) or (IB) are inhibitors of CD80 and useful in immunomodulation therapy: wherein Ar represents an optionally substituted monocyclic or bicyclic aromatic or heteroaromatic group having from 5 to 10 ring atoms; R1 and R2 independently represent H, or C1-C6 alkyl; R3 represents H; F; CI; Br, —NO2; —CN; C1-C6 alkyl optionally substituted by F or CI; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NR7C(?O)OR6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may be interrupted by one or more —O—, —S— or —N(R8)— radicals wherein R8 represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —CF3; —OH; —SH; —

Abstract: Compounds of formula (I) are inhibitors of CD80 and useful in immunomodulation therapy: wherein R1 and R3 independently represent H; F; Cl; Br; —NO2; —CN; C1-C6 alkyl optionally substituted by F or Cl; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NR7C(?O)OR6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may contain one or more —O—, —S— or —N(R8)— links wherein R8 represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —NR9R10 wherein R9 and R10 independently represents H; C1-C4 alkyl; C3-C4 alkenyl; C3-C4 alkynyl; C3-C6 cycloalkyl; an ester group; an optionally substituted carbocyclic or heterocyclic group; or

Abstract: Compounds of formula (I) are inhibitors of CD80 and useful in immunomodulation therapy: wherein R1 and R3 independently represent H; F; Cl; Br; —NO2; —CN; C1-C6 alkyl optionally substituted by F or Cl; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NR7C(?O)OR6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may contain one or more —O—, —S— or —N(R8)— links wherein R8 represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —NR9R10 wherein R9 and R10 independently represents H; C1-C4 alkyl; C3-C4 alkenyl; C3-C4 alkynyl; C3-C6 cycloalkyl; an ester group; an optionally substituted carbocyclic or heterocyclic group; or

Abstract: The choline salt of the CD80 antagonist compound 4-(6-fluoro-3-oxo-1,3-dihydro-pyrazolo[4,3-c]cinnolin-2-yl)-N-(2,2-difluoro-ethyl)-benzamide (I) has good aqueous solubility and is therefore convenient for pharmaceutical use.

Abstract: The present invention provides polypeptides having the property of binding to a given Class I pMHC CHARACTERISED IN THAT said polypeptide has a KD for the said given Class I pMHC of less than or equal to 1 ?M and/or has an off-rate (koff) for the said given Class I pMHC molecule of 2 S?1 or slower AND said polypeptide has at least a 45% identity and/or 55% similarity to SEQ ID NO: 7 AND said polypeptide inhibits CD8 binding to the given pMHC to a greater extent than the polypeptide SEQ ID NO:3. Such polypeptides are useful, either alone or associated with a therapeutic agent, for the inhibition of cytotoxic T cell (CTL) responses.

Abstract: Compounds of formula (I) are CD80 inhibitors, and of value for immunomodulation, e.g. in rheumatoid arthritis, multiple sclerosis, diabetes, asthma, transplantation, systemic lupus erythematosis and psoriasis: wherein Y is —CH2—, —CH2CH2—, or CH2CH2CH2—; R1 represents H; F; methyl, trifuoromethyl, methoxy or triflioromethoxy; R3 represents H; F; CI; Br; NO2; CN; C1C6 alkyl optionally substituted by F or Cl; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O) NR6R7—NR7C(?O)R6, NR7C(?O)OR6, NHC(?O) or NHC(?S)NR7R6 wherein R6 and R7 are as defined in the specification and X represents a bond or a divalent radical as defined in the specification.

Abstract: The present invention provides gamma-delta T cell receptors (??TCRs) with an introduced disulfide interchain bond. Such proteins, and cells expressing of such proteins on the surface thereof, have value in methods for distinguishing between cell populations by the TCR ligand they present, and in the treatment of diseases.

Abstract: A method of increasing the affinity and/or decreasing the off-rate of a given TCR specific for a given target pMHC, comprising creating a plurality of TCRs having an ? chain CDR2 sequence and/or a ? chain CDR2 sequence different from the corresponding CDR2 sequence(s) of the given TCR but having the same ? and ? CDR1 and CDR3 sequences as the given TCR, determining the affinity and/or off-rate of members of said plurality of TCRs for the target pMHC, and selecting one or more members having at least a 10-fold greater affinity for the target pMHC than the given TCR and/or a 10-fold slower off-rate for the target pMHC than the given TCR.

Abstract: The present invention provides TCRs having an affinity (KD) of less than or equal to 3 ?M, and/or an off-rate (koff) of 1×10?3 S?1 or slower, for the AAGIGILTV-HLA-A*0201 complex. Such TCRs are useful, either alone or associated with a therapeutic agent, for targeting cancer cells presenting that complex.

Abstract: The present invention provides isolated T cell receptors (TCRs) having the property of specifically binding to the VYGFVRACL-HLA-A24 peptide-MHC. Such TCRs are useful, either alone or associated with a therapeutic agent, for targeting cancerous cells presenting the complex.

Abstract: The present invention provides modified CD8 molecules whose binding to MHC is enhanced compared to wild-type CD8, wherein Ser53 of at least one CD8? chain thereof is mutated to another amino acid. It also provides nucleic acids encoding such molecules and methods of using such molecules and nucleic acids in immunosuppressive therapy, in particular as inhibitors of cytotoxic T cell responses.

Abstract: The present invention provides a superantigen quality control assay, particularly for SEA-E120, comprising incubating a standard amount of a superantigen-containing test sample with a standard amount of a soluble TCR which binds the superantigen, separating unbound TCR from the resultant superantigen/TCR-containing sample, quantifying the TCR bound in that sample, and comparing that result with a reference result characterising a control superantigen-containing sample. Also provided are soluble TCRs useful as reagents in said assay.

Abstract: Compounds of formula (I) are inhibitors of CD80 and useful in immunomodulation therapy: wherein R1 and R3 independently represent H; F; Cl; Br; —NO2; —CN; C1-C6 alkyl optionally substituted by F or Cl; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NR7C(?O)OR6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may contain one or more —O—, —S— or —N(R8)— links wherein R8 represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —NR9R10 wherein R9 and R10 independently represents H; C1-C4 alkyl; C3-C4 alkenyl; C3-C4 alkynyl; C3-C6 cycloalkyl; an ester group; an optionally substituted carbocyclic or heterocyclic group; or

Abstract: The present invention provides a soluble T cell receptor (sTCR), which comprises (i) all for part of a TCR ? chain, except the transmembrane domain thereof, and (ii) all or part of a TCR ? chain, except the transmembrane domain thereof. (i) and (ii) each comprise a functional variable domain and at least a part of the constant domain of the TCR chain, and are linked by a disulphide bond between constant domain residues which is not present in native TCR.

Abstract: Compounds of formula (I) are inhibitors of CD80 and useful in immunomodulation therapy: wherein R1 and R3 independently represent H; F; CI; Br; —NO2; —CN; C1-C6 alkyl optionally substituted by F or Cl; or C1-C6 alkoxy optionally substituted by F; R4 represents a carboxylic acid group (—COOH) or an ester thereof, or —C(?O)NR6R7, —NR7C(?O)R6, —NR7C(?O)OR6, —NHC(?O)NR7R6 or —NHC(?S)NR7R6 wherein R6 represents H, or a radical of formula -(Alk)m-Q wherein m is 0 or 1, Alk is an optionally substituted divalent straight or branched C1-C12 alkylene, or C2-C12 alkenylene, or C2-C12 alkynylene radical or a divalent C3-C12 carbocyclic radical, any of which radicals may contain one or more —O—, —S— or —N(R8)— links wherein R8, represents H or C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, or C3-C6 cycloalkyl, and Q represents H; —NR9R10 wherein R9 and R10 independently represents H; C1-C4 alkyl; C3-C4 alkenyl; C3-C4 alkynyl; C3-C6 cycloalkyl; an ester group; an optionally substituted carbocyclic or heterocyclic group; or R9