Patents Assigned to Celltech R & D Limited
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Publication number: 20040235876Abstract: Pyrimidines of formla (1) are described: 1Type: ApplicationFiled: June 22, 2004Publication date: November 25, 2004Applicant: Celltech R&D LimitedInventors: Jeremy Martin Davis, David Festus Charles Moffat
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Patent number: 6808901Abstract: A process for the production of a chimeric antibody, comprising: a) preparing a replicable expression vector including a suitable promoter operably linked to a DNA sequence comprising a first part which encodes at least the variable region of the heavy or light chain of an Ig molecule and a second part which encodes at least part of a second protein; b) if necessary, preparing a replicable expression vector incuding a suitable promoter operably linked to a DNA sequence which encodes at least the variable region of a complementary light or heavy chain respectively of an Ig molecule; c) transforming an immortalized mammalian cell line with the or both prepared vectors; and d) culturing said transformed cell line to produce the chimeric antibody; chimeric antibodies produced by this process; and plasmids and transformed cell lines used in the process.Type: GrantFiled: June 6, 1995Date of Patent: October 26, 2004Assignee: Celltech R&D LimitedInventors: Michael Samuel Neuberger, Terence Howard Rabbitts
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Publication number: 20040185040Abstract: The invention provides methods for modulating the immune system using anti-CD83 antibodies that can influence CD83 function.Type: ApplicationFiled: November 21, 2003Publication date: September 23, 2004Applicant: Celltech R & D LimitedInventors: Leon Fernando Garcia-Martinez, Yuching Chen, Dawn Andrews
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Patent number: 6780874Abstract: Enamine derivatives of formula (1) are described: wherein R1 is a group Ar1L2Ar2Alk- in, which Ar1 is an aromatic or heteroaromatic group, L2 is a covalent bond or a linker atom or group, Ar2 is an arylene or heteroarylene group and Alk is a chain —CH2—CH(R)—, —CH═C(R)— or in which R is a carboxylic acid or a derivative or biostere thereof; R2 is a hydrogen atom or a C1-6alkyl group; Cy is a cycloaliphatic or heterocycloaliphatic ring in which X is a N atom or a C(Rw) group; Rx is a oxo, thioxo, or imino group; Rw and Rz is each a hydrogen atom or optional substituent; provided that Cy is not a cyclobutenedione group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders, or disorders involving the inappropriate growth or migration of cells.Type: GrantFiled: June 10, 2003Date of Patent: August 24, 2004Assignee: Celltech R & D LimitedInventors: Timothy John Norman, John Robert Porter, Brian Woodside Hutchinson, Andrew James Ratcliffe, John Clifford Head, Rikki Peter Alexander, Barry John Langham, Graham John Warrellow, Sarah Catherine Archibald, Janeen Marsha Linsley
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Patent number: 6750325Abstract: The invention provides recombinant antibody molecules comprising antigen binding regions derived from the heavy and/or light chain variable regions of a donor anti-CD3 antibody, e.g. OKT3, and which have anti-CD3 binding specificity, preferably of affinity similar to that of OKT3. The recombinant antibody is preferably a humanized antibody and may be a chimeric or CDR-grafted antibody. A method is disclosed for preparing CDR-grafted humanized antibodies in which, in addition to the CDR's non-human antibody residues are preferably used at positions 23, 24, 49, 71, 73 and 78 of the heavy chain variable region and at positions 46, 48, 58, and 71 of the light chain variable region. The recombinant, especially the humanized, anti-CD3 antibodies may be used for in vivo therapy or diagnosis.Type: GrantFiled: July 6, 1999Date of Patent: June 15, 2004Assignee: Celltech R&D LimitedInventors: Linda Kay Jolliffe, Robert Allan Zivin, John Robert Adair, Diljeet Singh Athwal
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Patent number: 6740654Abstract: Squaric acid derivatives of formula (1) are described: wherein Het is an optionally substituted bicyclic fused ring heteroaromatic group; L2 is a covalent bond or an atom or group —O—, —S—, —C(O)—, —C(S)—, —S(O)—, —S(O)2, —N(R8)— or —C(R8)(R8a)—; Ar2 is an optionally substituted aromatic or heteroaromatic group; Alk is a chain in which R is a carboxylic acid (—CO2H) or a derivative or biostere thereof; R1 is a hydrogen atom or a C1-6alkyl group; L1 is a covalent bond or a linker atom or group; Alk1 is an optionally substituted aliphatic chain; n is zero or the integer 1; R2 is a hydrogen atom or an optionally substituted heteroaliphatic, cycloaliphatic, heterocycloaliphatic, polycycloalphatic, heteropolycycloaliphatic, aromatic or heteroaromatic group other than a 2,6-naphthyridin-1-yl, isoquinolin-1-yl, 2,7-naphthyridin-1-yl or quinazolin-4-yl group; and the saltType: GrantFiled: July 5, 2001Date of Patent: May 25, 2004Assignee: Celltech R & D LimitedInventors: Barry John Langham, Rikki Peter Alexander, John Clifford Head, Janeen Marsha Linsley, John Robert Porter, Sarah Catherine Archibald, Graham John Warrellow
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Patent number: 6734286Abstract: An effective anti-IL-5 recombinant antibody molecule comprising heavy and/or light chain antigen-binding residues from a donor antibody.Type: GrantFiled: May 15, 2001Date of Patent: May 11, 2004Assignee: Celltech R&D LimitedInventors: Mark William Bodmer, Diljeet Singh Athwal, John Spencer Emtage
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Publication number: 20040024220Abstract: Bipolar lipids are described which are able to form complexes with polyanions. The lipids comprise a cationic head linked to a hydrophobic backbone and a hydrophilic tail and are capable of self assembly to form stable complexes in aqueous solutions. The lipids are of particular use for the delivery of bioactive substances such as nucleic acids to cells in vitro and especially in vivo.Type: ApplicationFiled: May 9, 2003Publication date: February 5, 2004Applicant: CELLTECH R & D LIMITEDInventors: Michael Anthony William Eaton, Timothy John Norman, David Parker, Terence Seward Baker, Andrew Neil Charles Weir, Catherine Fiona Catterall
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Patent number: 6677339Abstract: Phenylalanine derivatives of formula (1) are described: in which: Ar1 is an aromatic or heteroaromatic group; L1 is a linker atom or group; R is a carboxylic acid or a derivative thereof; Ar2 is an optionally substituted aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of &agr;4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.Type: GrantFiled: August 10, 2001Date of Patent: January 13, 2004Assignee: Celltech R & D LimitedInventors: John Clifford Head, John Robert Porter, Graham John Warrellow, Sarah Catherine Archibald, Brian Woodside Hutchinson
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Patent number: 6610700Abstract: Enamine derivatives of formula (1) are described: wherein R1 is a group Ar1 L2Ar2Alk- in which Ar1 is an aromatic or heteroaromatic group, L2 is a covalent bond or a linker atom or group, Ar2 is an arylene or heteroarylene group and Alk is a chain —CH2—CH(R)—, —CH═C(R)— or in which R is a carboxylic acid or a derivative or biostere thereof; R2 is a hydrogen atom or a C1-6alkyl group; Cy is a cycloaliphatic or heterocycloaliphatic ring in which X is a N atom or a C(Rw) group; Rx is a oxo, thioxo, or imino group; Rw and Rz is each a hydrogen atom or optional substituent; provided that Cy is not a cyclobutenedione group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders, or disorders involving the inappropriate growth or migration of cells.Type: GrantFiled: April 16, 2001Date of Patent: August 26, 2003Assignee: Celltech R & D LimitedInventors: Timothy John Norman, John Robert Porter, Brian Woodside Hutchinson, Andrew James Ratcliffe, John Clifford Head, Rikki Peter Alexander, Barry John Langham, Graham John Warrellow, Sarah Catherine Archibald, Janeen Marsha Linsley
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Patent number: 6603041Abstract: Enamide derivatives of formula (1) are described: wherein R1 is a group Ar1L2Ar2Alk- in which Ar1 is an optionally substituted aromatic or heteroaromatic group, L2 is a covalent bond or a linker atom or group, Ar2 is an optionally substituted arylene or heteroarylene group and Alk is a chain —CH2—CH(R)—, —CH═C(R)— or in which R is a carboxylic acid (—CO2H) or a derivative or biostere thereof; R2 is a hydrogen atom or a C1-6alkyl group; X is an O or S atom or the group NR30 group; j and k is each zero or the integer 1 or 2 provided that the sum of j and k is zero or the integer 1 or 2; Cy1 is an optionally substituted cycloaliphatic, heterocycloaliphatic, aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof.Type: GrantFiled: September 5, 2001Date of Patent: August 5, 2003Assignee: Celltech R & D LimitedInventors: Timothy John Norman, John Robert Porter, John Clifford Head, Andrew James Ratcliffe
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Patent number: 6599908Abstract: Fused polycyclic 2-aminopyrimidines of formula (1): wherein Ar is an optionally substituted aromatic or heteroaromatic group; X is a carbon or nitrogen atom; Y is a carbon or nitrogen atom; Z is a linker group; A together with X and Y forms an optionally substituted monocyclic or bicyclic aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof are described. The compounds are potent and selective inhibitors of the protein tyrosine kinases p56lck and p59fyn and are of use in the prophylaxis and treatment of immune diseases, hyperproliferative disorders and other diseases in which inappropriate p56lck and/or p59fyn activity is believed to have a role.Type: GrantFiled: March 2, 2000Date of Patent: July 29, 2003Assignee: Celltech R & D LimitedInventors: Jeremy Martin Davis, Peter David Davis, David Festus Charles Moffat, Mark James Batchelor
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Patent number: 6600037Abstract: Pyrimidines of formla (1) are described: wherein R1 is a —XR6 group; R2 and R3 which may be the same or different is each a hydrogen or halogen atom or a group selected from an optionally substituted aliphatic, cycloaliphatic, heteroaliphatic, heterocycloaliphatic, —OH, —OR10 [where R10 is an optionally substituted aliphatic, cycloaliphatic, heteroaliphatic, heterocycloaliphatic, aromatic or heteroaromatic group] —SH, —NO2, —CN, —SR10, —COR10, S(O)R10, —SO2R8, —SO2N(R8)(R9), —CO2R8, —CON(R8)(R9), —CSN(R8)(R9), —NH2 or substituted amino group; R4 is a X1R11 group where X1 is a covalent bond or a —C(R12)(R13)— [where each of R12 and R13 is a hydrogen or halogen atom or a hydroxyl, alkyl or haloalkyl group] or —C(O)— group and R11 is an optionally substituted phenyl, thienyl, thiazolyl or indolyl group; R5 is a halogen atom or an alkynyl group; and the salts, solvType: GrantFiled: October 19, 2000Date of Patent: July 29, 2003Assignee: Celltech R & D LimitedInventors: Jeremy Martin Davis, David Festus Charles Moffat
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Patent number: 6593338Abstract: 3-Substituted 2,7-naphthyridine derivatives of formula (1) are described: wherein L1 and L1 is each a covalent bond or a linker atom or group; Alk1 is an optionally substituted aliphatic chain; R2 is a hydrogen atom or an optionally substituted heteroaliphatic, cycloaliphatic, heterocycloaliphatic, polycycloaliphatic, heteropolycycloaliphatic, aromatic or heteroaromatic group; Alk is a chain in which R is a carboxylic acid (—CO2H) or a derivative or biostere thereof; Ar2 is an optionally substituted aromatic or heteroaromatic linking group; R16 is the group —L3(Alk2)tL4R20 in which L3 and L4 which may be the same or different is each a covalent bond or a linker atom or group, t is zero or the integer 1, Alk2 is an optionally substituted aliphatic or heteroaliphatic chain and R20 is an optionally substituted aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof.Type: GrantFiled: November 27, 2001Date of Patent: July 15, 2003Assignee: Celltech R&D LimitedInventors: John Clifford Head, Catherine McKay, John Robert Porter
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Patent number: 6583301Abstract: Bipolar lipids are described which are able to form complexes with polyanions. The lipids comprise a cationic head linked to a hydrophobic backbone and a hydrophilic tail and are capable of self assembly to form stable complexes in aqueous solutions. The lipids are of particular use for the delivery of bioactive substances such as nucleic acids to cells in vitro and especially in vivo.Type: GrantFiled: November 20, 2000Date of Patent: June 24, 2003Assignee: Celltech R & D LimitedInventors: Michael Anthony William Eaton, Timothy John Norman, David Parker, Terence Seward Baker, Andrew Neil Charles Weir, Catherine Fiona Catterall
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Patent number: 6579983Abstract: Pyrimidines of formula (1) are described wherein Ar is an optionally substituted aromatic or heteroaromatic group; R1 is a hydrogen atom or a straight or branched chain alkyl group; R2 is a —X1—R3 group where X1 is a direct bond or a linker atom or group, and R3 is an optionally substituted aliphatic, cycloaliphatic, heteroaliphatic, heterocycloaliphatic, aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are selective KDR Kinase and/or FGFr Kinase inhibitors and are of use in the prophylaxis and treatment of disease states assoicated with angiogenesis.Type: GrantFiled: June 16, 2000Date of Patent: June 17, 2003Assignee: Celltech R&D LimitedInventors: Mark James Batchelor, David Festus Charles Moffat, Jeremy Martin Davis, Martin Clive Hutchings
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Patent number: 6555562Abstract: Phenylalanine derivatives of formula (1) are described: wherein R is a carboxylic acid or a derivative thereof; L1 is a linker atom or group; Ar is an optionally substituted aromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of alpha4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.Type: GrantFiled: February 26, 1999Date of Patent: April 29, 2003Assignee: Celltech R&D LimitedInventors: Sarah Catherine Archibald, John Clifford Head, Graham John Warrellow, John Robert Porter
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Patent number: 6552029Abstract: Compounds of general formula (1) are described wherein: Ar is an optionally substituted aromatic group; R2 is a hydrogen or halogen atom or a group —X1—R2a where X1 is a direct bond or a linker atom or group, and R2a is an optionally substituted straight or branched chain alkyl, alkenyl or alkynyl group; R3 is an optionally substituted heterocycloalkyl group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are selective protein tyrosine kinase inhibitors, particularly the kinases ZAP-70 and syk and are of use in the prophylaxis and treatment of immune or allergic diseases and diseases involving inappropriate platelet activation.Type: GrantFiled: October 20, 1999Date of Patent: April 22, 2003Assignee: Celltech R&D LimitedInventors: Peter David Davis, David Festus Charles Moffat, Mark James Batchelor, Martin Clive Hutchings, David Mark Parry
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Patent number: 6545013Abstract: 2,7-Naphthyridine containing squaric acids of formula (1) are described: wherein Ar1 is an optionally substituted 2,7-naphthridin-1-yl group; L2 is a covalent bond or a linker atom or group; Ar2 is an optionally substituted aromatic or heteroaromatic chain; Alk is a chain —CH2CH(R)—, —CH═C(R)—, in which R is a carboxylic acid (—CO2H) or a derivative or biostere thereof; R1 is a hydrogen atom or a C1-6alkyl group; L1 is a covalent bond or a linker atom or group; Alk1 is an optionally substituted aliphatic chain; n is zero or the integer 1; R2 is a hydrogen atom or an optionally substituted heteroaliphatic, cycloaliphatic, heterocycloaliphatic, polycycloalphatic, heteropoly-cycloaliphatic, aromatic or heteroaromatic group; and the salts, solvates, hydrates and N-oxides thereof.Type: GrantFiled: May 29, 2001Date of Patent: April 8, 2003Assignee: Celltech R&D LimitedInventors: Barry John Langham, Rikki Peter Alexander, John Clifford Head, Janeen Marsha Linsley, John Robert Porter, Sarah Catherine Archibald, Graham John Warrellow
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Patent number: 6534513Abstract: Phenylalkanoic acid derivatives of formula (1) are described: wherein Ar1 is an aromatic or heteroaromatic group; L1 is a covalent bond or a linker atom or group; A is an optionally substituted aliphatic, heteroaliphatic, cycloaliphatic, polycycloaliphatic, heterocycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group; R is a carboxylic acid (—CO2H) or a derivative thereof; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of alpha 4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.Type: GrantFiled: September 29, 1999Date of Patent: March 18, 2003Assignee: Celltech R&D LimitedInventors: John Robert Porter, Graham John Warrellow, Sarah Catherine Archibald, John Clifford Head