Patents Assigned to Cytomx Therapeutics, Inc.
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Patent number: 9737623Abstract: The invention relates generally to antibodies and antigen-binding fragments thereof that bind activatable antibodies and/or conjugated activatable antibodies and methods of making and using these antibodies that bind activatable antibodies and/or conjugated activatable antibodies.Type: GrantFiled: December 11, 2014Date of Patent: August 22, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Luc Roland Desnoyers, Tony W. Liang, Annie Yang Weaver
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Patent number: 9695249Abstract: The present disclosure relates to antibodies specific for urokinase-type plasminogen activator (uPA). According to certain embodiments, the anti-uPA antibody specifically binds to the active form of uPA. In certain aspects, the anti-uPA antibody that specifically binds to active uPA binds specifically to the active form of human uPA (e.g., the antibody does not cross-react with active forms of uPA from non-human organisms). In certain aspects, an anti-uPA antibody of the present disclosure competes for specific binding to uPA with plasminogen activator inhibitor type 1 (PAI-1), where binding of the antibody to uPA results in internalization of a complex that includes the antibody, uPA, and urokinase-type plasminogen activator receptor (uPAR). Also provided are antibodies that specifically bind to uPA and compete for binding to uPA with a synthetic ligand of uPA. The disclosure also provides anti-uPA antibody conjugates and compositions (e.g.Type: GrantFiled: December 17, 2015Date of Patent: July 4, 2017Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Natalia Sevillano, Aaron M. Lebeau, Daniel Hostetter, Charles S. Craik
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Patent number: 9688748Abstract: This invention relates generally to the generation of antibodies, e.g., monoclonal antibodies including fully human monoclonal antibodies, that recognize Jagged 1 and/or Jagged 2, to antibodies, e.g., monoclonal antibodies including fully human antibodies that recognize Jagged 1 and/or Jagged 2, and nucleic acid molecules that encode antibodies, e.g., nucleic acid molecules that encode monoclonal antibodies including fully human cross-reactive antibodies that recognize both Jagged 1 and Jagged 2, and to methods of making the anti-Jagged antibodies and methods of using the anti-Jagged antibodies as therapeutics, prophylactics, and diagnostics. The invention also relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically bind to Jagged 1 and Jagged 2, and to methods of making and using these activatable anti-Jagged antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: July 31, 2015Date of Patent: June 27, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: James William West, Jason Gary Sagert, Paul H. Bessette, Henry Bernard Lowman, Nancy E. Stagliano, Olga Vasiljeva, Elizabeth-Edna Mary Menendez
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Patent number: 9644016Abstract: The present disclosure provides for proprotein and activatable proprotein compositions. A proprotein contains a functional protein (i.e. a full length protein or functional fragment thereof) which is coupled to a peptide mask that inhibits the binding of the functional protein to its target or binding partner. An activatable proprotein contains a functional protein coupled to a peptide mask, and further coupled to an activatable linker, wherein in an non-activated state, the peptide mask inhibits binding of the functional protein to its target or binding partner and in an activated state the peptide mask does not inhibit binding of the functional protein to its target or binding partner. Proproteins can provide for reduced toxicity and adverse side effects that could otherwise result from binding of a functional protein at non-treatment sites if it were not inhibited from binding its binding partner. Proproteins can further provide improved biodistribution characteristics.Type: GrantFiled: March 30, 2015Date of Patent: May 9, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Nancy E. Stagliano, James W. West, Kathryn Kamath, Paul H. Bessette, Jason G. Sagert
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Patent number: 9562073Abstract: The invention relates generally to polypeptides that include a cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator (uPA), to activatable antibodies and other larger molecules that include the cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator, and to methods of making and using these polypeptides that include a cleavable moiety that is a substrate for at least one protease selected from matriptase and u-plasminogen activator in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: January 30, 2015Date of Patent: February 7, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Stephen James Moore, Margaret Thy Luu Nguyen, Daniel R. Hostetter, Olga Vasiljeva
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Patent number: 9545442Abstract: The invention relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically binds to epidermal growth factor receptor (EGFR), and to methods of making and using these anti-EGFR activatable antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: July 31, 2015Date of Patent: January 17, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Henry Bernard Lowman, Luc Roland Desnoyers, Shouchun Liu, James William West, Jason Gary Sagert, Olga Vasiljeva, Elizabeth-Edna Mary Menendez
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Patent number: 9540440Abstract: The invention relates generally to variant activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically binds to epidermal growth factor receptor (EGFR), and to methods of making and using these variant anti-EGFR activatable antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: October 30, 2014Date of Patent: January 10, 2017Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Henry Bernard Lowman, Luc Roland Desnoyers, Shouchun Liu
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Patent number: 9517276Abstract: The invention relates generally to compositions and methods for conjugating antibodies and activatable antibodies, and methods of partially reducing antibodies and/or activatable antibodies prior to conjugation, e.g., thiol-based conjugation, with an agent, e.g., a therapeutic and/or diagnostic agent.Type: GrantFiled: June 4, 2014Date of Patent: December 13, 2016Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Henry Bernard Lowman, Luc Roland Desnoyers, Tony W. Liang, Andrei William Konradi, Shweta Singh
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Patent number: 9487590Abstract: The invention relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically binds to interleukin-6 receptor (IL-6R), and to methods of making and using these anti-IL-6R activatable antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: September 25, 2013Date of Patent: November 8, 2016Assignee: CYTOMX THERAPEUTICS, INC.Inventors: James William West, Jason Gary Sagert, Daniel Robert Hostetter, Stephen James Moore, Margaret Thy Luu Nguyen, Olga Vasiljeva, Jeanne Grace Flandez
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Patent number: 9453078Abstract: The present disclosure provides modified antibodies which contain an antibody or antibody fragment (AB) modified with a masking moiety (MM). Such modified antibodies can be further coupled to a cleavable moiety (CM), resulting in activatable antibodies (AAs), wherein the CM is capable of being cleaved, reduced, photolyzed, or otherwise modified. AAs can exhibit an activatable conformation such that the AB is more accessible to a target after, for example, removal of the MM by cleavage, reduction, or photolysis of the CM in the presence of an agent capable of cleaving, reducing, or photolyzing the CM. The disclosure further provides methods of making and using such modified antibodies and activatable antibodies.Type: GrantFiled: September 26, 2013Date of Patent: September 27, 2016Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Nancy E. Stagliano, James W. West, Kathryn Kamath, Paul H. Bessette, Fred Gluck, Jason Sagert, Patrick Daugherty
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Patent number: 9309510Abstract: The present invention generally relates to bacterial polypeptide display systems, libraries using these bacterial display systems, and methods of making and using these systems, including methods for improved display of polypeptides on the extracellular surface of bacteria using circularly permuted transmembrane bacterial polypeptides that have been modified to increase resistance to protease degradation and to enhance polypeptide display characteristics.Type: GrantFiled: August 9, 2013Date of Patent: April 12, 2016Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Sherry Lynn La Porte, Stephen James Moore, James William West
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Patent number: 9255155Abstract: The present disclosure relates to antibodies specific for urokinase-type plasminogen activator (uPA). According to certain embodiments, the anti-uPA antibody specifically binds to the active form of uPA. In certain aspects, the anti-uPA antibody that specifically binds to active uPA binds specifically to the active form of human uPA (e.g., the antibody does not cross-react with active forms of uPA from non-human organisms). In certain aspects, an anti-uPA antibody of the present disclosure competes for specific binding to uPA with plasminogen activator inhibitor type 1 (PAI-1), where binding of the antibody to uPA results in internalization of a complex that includes the antibody, uPA, and urokinase-type plasminogen activator receptor (uPAR). Also provided are antibodies that specifically bind to uPA and compete for binding to uPA with a synthetic ligand of uPA. The disclosure also provides anti-uPA antibody conjugates and compositions (e.g.Type: GrantFiled: January 23, 2014Date of Patent: February 9, 2016Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Natalia Sevillano, Aaron M. Lebeau, Daniel Robert Hostetter, Charles S. Craik
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Patent number: 9169321Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: July 24, 2013Date of Patent: October 27, 2015Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 9127053Abstract: This invention relates generally to the generation of antibodies, e.g., monoclonal antibodies including fully human monoclonal antibodies, that recognize Jagged 1 and/or Jagged 2, to antibodies, e.g., monoclonal antibodies including fully human antibodies that recognize Jagged 1 and/or Jagged 2, and nucleic acid molecules that encode antibodies, e.g., nucleic acid molecules that encode monoclonal antibodies including fully human cross-reactive antibodies that recognize both Jagged 1 and Jagged 2, and to methods of making the anti-Jagged antibodies and methods of using the anti-Jagged antibodies as therapeutics, prophylactics, and diagnostics. The invention also relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically bind to Jagged 1 and Jagged 2, and to methods of making and using these activatable anti-Jagged antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: June 21, 2013Date of Patent: September 8, 2015Assignee: CYTOMX THERAPEUTICS, INC.Inventors: James William West, Jason Gary Sagert, Paul H. Bessette, Henry Bernard Lowman, Nancy E. Stagliano, Olga Vasiljeva, Elizabeth-Edna Mary Menendez
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Patent number: 9120853Abstract: The invention relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically binds to epidermal growth factor receptor (EGFR), and to methods of making and using these anti-EGFR activatable antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: GrantFiled: April 26, 2013Date of Patent: September 1, 2015Assignee: CYTOMX THERAPEUTICS, INC.Inventors: Henry Bernard Lowman, Luc Roland Desnoyers, Shouchun Liu, James William West, Jason Gary Sagert, Olga Vasiljeva, Elizabeth-Edna Mary Menendez
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Patent number: 8993266Abstract: The present disclosure provides for proprotein and activatable proprotein compositions. A proprotein contains a functional protein (i.e. a full length protein or functional fragment thereof) which is coupled to a peptide mask that inhibits the binding of the functional protein to its target or binding partner. An activatable proprotein contains a functional protein coupled to a peptide mask, and further coupled to an activatable linker, wherein in an non-activated state, the peptide mask inhibits binding of the functional protein to its target or binding partner and in an activated state the peptide mask does not inhibit binding of the functional protein to its target or binding partner. Proproteins can provide for reduced toxicity and adverse side effects that could otherwise result from binding of a functional protein at non-treatment sites if it were not inhibited from binding its binding partner. Proproteins can further provide improved biodistribution characteristics.Type: GrantFiled: December 20, 2012Date of Patent: March 31, 2015Assignee: CytomX Therapeutics, Inc.Inventors: Nancy E. Stagliano, James W. West, Kathryn Kamath, Paul H. Bessette, Jason Sagert
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Publication number: 20140363430Abstract: The invention relates generally to activatable antibodies that include a masking moiety (MM), a cleavable moiety (CM), and an antibody (AB) that specifically binds to interleukin-6 receptor (IL-6R), and to methods of making and using these anti-IL-6R activatable antibodies in a variety of therapeutic, diagnostic and prophylactic indications.Type: ApplicationFiled: September 25, 2013Publication date: December 11, 2014Applicant: CYTOMX THERAPEUTICS, INC.Inventors: James William West, Jason Gary Sagert, Daniel Robert Hostetter, Stephen James Moore, Margaret Thy Luu Nguyen, Olga Vasiljeva, Jeanne Grace Flandez
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Publication number: 20140045195Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: ApplicationFiled: July 24, 2013Publication date: February 13, 2014Applicants: CytomX Therapeutics, Inc., The Regents of the University of CaliforniaInventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, Kathryn Kamath, James W. West, Sanjay Khare, Jason Sagert
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Patent number: 8563269Abstract: The present disclosure provides modified antibodies which contain an antibody or antibody fragment (AB) modified with a masking moiety (MM). Such modified antibodies can be further coupled to a cleavable moiety (CM), resulting in activatable antibodies (AAs), wherein the CM is capable of being cleaved, reduced, photolysed, or otherwise modified. AAs can exhibit an activatable conformation such that the AB is more accessible to a target after, for example, removal of the MM by cleavage, reduction, or photolysis of the CM in the presence of an agent capable of cleaving, reducing, or photolysing the CM. The disclosure further provides methods of making and using such modified antibodies and activatable antibodies.Type: GrantFiled: December 9, 2011Date of Patent: October 22, 2013Assignee: CytomX Therapeutics, Inc.Inventors: Nancy E. Stagliano, James W. West, Kathryn Kamath, Paul H. Bessette, Frederick W. Gluck, Jason Sagert, Patrick Daugherty
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Patent number: 8541203Abstract: Activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM) are provided. Activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM are provided. Furthermore, ABPs which contain a first TBM, a second TBM and a CM are provided. The ABPs exhibit an “activatable” conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. Further provided are libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. Further provided are ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.Type: GrantFiled: March 2, 2012Date of Patent: September 24, 2013Assignees: The Regents of the University of California, CytomX Therapeutics, Inc.Inventors: Patrick Sean Daugherty, Nancy Stagliano, Jerry Thomas, James W. West, Jason Sagert