Patents by Inventor Masayuki Kai
Masayuki Kai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11912775Abstract: A monoclonal antibody is provided which binds to a human CC chemokine receptor 1 (CCR1) and inhibits activation of the human CCR1, or an antibody fragment thereof. The monoclonal antibody binds to an extracellular region of a human CCR1 and inhibits activation of the human CCR1 by a human CC chemokine ligand 15 (CCL15). An antibody fragment thereof, a hybridoma producing the antibody, a nucleic acid having a nucleotide sequence encoding the antibody or the antibody fragment, a transformant cell containing a vector containing the nucleic acid, a method for producing the antibody or the antibody fragment using the hybridoma or the transformant cell; a therapeutic agent and a diagnostic agent containing the antibody or the antibody fragment, and a method for treating and diagnosing a CCR1-related disease using the antibody or the antibody fragment are also provided.Type: GrantFiled: July 18, 2018Date of Patent: February 27, 2024Assignees: KYOWA KIRIN CO., LTD., KYOTO UNIVERSITYInventors: Masayuki Kai, Shinya Ogawa, Makoto Taketo, Kenji Kawada, Hideyo Hirai, Yoshiharu Sakai, Taira Maekawa
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Publication number: 20240026017Abstract: A monoclonal antibody is provided which binds to a human CC chemokine receptor 1 (CCR1) and inhibits activation of the human CCR1, or an antibody fragment thereof. The monoclonal antibody binds to an extracellular region of a human CCR1 and inhibits activation of the human CCR1 by a human CC chemokine ligand 15 (CCL15). An antibody fragment thereof, a hybridoma producing the antibody, a nucleic acid having a nucleotide sequence encoding the antibody or the antibody fragment, a transformant cell containing a vector containing the nucleic acid, a method for producing the antibody or the antibody fragment using the hybridoma or the transformant cell; a therapeutic agent and a diagnostic agent containing the antibody or the antibody fragment, and a method for treating and diagnosing a CCR1-related disease using the antibody or the antibody fragment are also provided.Type: ApplicationFiled: September 1, 2023Publication date: January 25, 2024Applicants: Kyowa Kirin Co., Ltd., Kyoto UniversityInventors: Masayuki Kai, Shinya Ogawa, Makoto Taketo, Kenji Kawada, Hideyo Hirai, Yoshiharu Sakai, Taira Maekawa
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Publication number: 20220220216Abstract: An object of the present invention is to provide a bispecific antibody including an antigen binding domain that binds to CD40 and an antigen binding domain that binds to GPC3. The present invention relates to a bispecific antibody including an antigen binding domain that binds to CD40 and an antigen binding domain that binds to GPC3, a bispecific antibody fragment thereof, a DNA encoding the bispecific antibody or the bispecific antibody fragment, a vector containing the DNA, and the like.Type: ApplicationFiled: May 15, 2020Publication date: July 14, 2022Applicant: Kyowa Kirin Co., Ltd.Inventors: Yoshiki SUMITOMO, Masayuki KAI
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Publication number: 20220017635Abstract: The present invention relates to a bispecific antibody in which an N-terminal side polypeptide is bound to an IgG portion that binds to TfR, a bispecific antibody fragment thereof, a DNA encoding the bispecific antibody or the bispecific antibody fragment thereof, a vector containing the DNA, a hybridoma and a transformant that produce the bispecific antibody or the bispecific antibody fragment thereof, a method for producing the bispecific antibody or the bispecific antibody fragment thereof, therapeutic and diagnostic agents containing the bispecific antibody or the bispecific antibody fragment thereof, therapeutic and diagnostic methods using the bispecific antibody or the bispecific antibody fragment thereof, and a reagent for detection or measurement containing the bispecific antibody or the bispecific antibody fragment thereof.Type: ApplicationFiled: December 27, 2019Publication date: January 20, 2022Applicant: Kyowa Kirin Co., Ltd.Inventors: Keisuke MITAMURA, Ryosuke NAKANO, Masayuki KAI, Nobuaki TAKAHASHI
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Publication number: 20200199240Abstract: An object of the present invention is to provide a monoclonal antibody which binds to a human CC chemokine receptor 1 (CCR1) and inhibits activation of the human CCR1, or an antibody fragment thereof. The present invention relates to a monoclonal antibody which binds to an extracellular region of a human CCR1 and inhibits activation of the human CCR1 by a human CC chemokine ligand 15 (CCL15), or an antibody fragment thereof, a hybridoma producing the antibody, a nucleic acid having a nucleotide sequence encoding the antibody or the antibody fragment, a transformant cell containing a vector containing the nucleic acid, a method for producing the antibody or the antibody fragment using the hybridoma or the transformant cell; a therapeutic agent and a diagnostic agent containing the antibody or the antibody fragment, and a method for treating and diagnosing a CCR1-related disease using the antibody or the antibody fragment.Type: ApplicationFiled: July 18, 2018Publication date: June 25, 2020Applicants: KYOWA KIRIN CO., LTD., KYOTO UNIVERSITYInventors: Masayuki KAI, Shinya OGAWA, Makoto TAKETO, Kenji KAWADA, Hideyo HIRAI, Yoshiharu SAKAI, Taira MAEKAWA
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Patent number: 8999329Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (human c-Mpl), and pharmaceutical compositions comprising the same for use in treatment of thrombocytopenia. The disclosed agonist antibody comprises (1) antibody constant regions comprising heavy and light chain constant regions, each of which may optionally contain domain substitutions, or may contain deletions, substitutions, additions, or insertions of amino acid residues, and (2) antibody variable regions capable of binding to and activating a human thrombopoietin receptor. The-agonist antibody further induces colony formation at a concentration of 10,000 ng/ml or lower, and has a maximal activity at least 50% higher than that of PEG-rHuMGDF and an 50% effective concentration (EC50) of 100 nM or less.Type: GrantFiled: July 6, 2012Date of Patent: April 7, 2015Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Masayuki Kai, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara
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Publication number: 20130053547Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (human c-Mpl), and pharmaceutical compositions comprising the same for use in treatment of thrombocytopenia. The disclosed agonist antibody comprises (1) antibody constant regions comprising heavy and light chain constant regions, each of which may optionally contain domain substitutions, or may contain deletions, substitutions, additions, or insertions of amino acid residues, and (2) antibody variable regions capable of binding to and activating a human thrombopoietin receptor. The-agonist antibody further induces colony formation at a concentration of 10,000 ng/ml or lower, and has a maximal activity at least 50% higher than that of PEG-rHuMGDF and an 50% effective concentration (EC50) of 100 nM or less.Type: ApplicationFiled: July 6, 2012Publication date: February 28, 2013Applicant: KYOWA HAKKO KIRIN CO., LTD.Inventors: Masayuki KAI, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara
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Patent number: 8236314Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (human c-Mpl), and pharmaceutical compositions comprising the same for use in treatment of thrombocytopenia. The disclosed agonist antibody comprises (1) antibody constant regions comprising heavy and light chain constant regions, each of which may optionally contain domain substitutions, or may contain deletions, substitutions, additions, or insertions of amino acid residues, and (2) antibody variable regions capable of binding to and activating a human thrombopoietin receptor. The-agonist antibody further induces colony formation at a concentration of 10,000 ng/ml or lower, and has a maximal activity at least 50% higher than that of PEG-rHuMGDF and an 50% effective concentration (EC50) of 100 nM or less.Type: GrantFiled: September 14, 2011Date of Patent: August 7, 2012Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Masayuki Kai, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara
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Publication number: 20120053326Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (human c-Mpl), and pharmaceutical compositions comprising the same for use in treatment of thrombocytopenia. The disclosed agonist antibody comprises (1) antibody constant regions comprising heavy and light chain constant regions, each of which may optionally contain domain substitutions, or may contain deletions, substitutions, additions, or insertions of amino acid residues, and (2) antibody variable regions capable of binding to and activating a human thrombopoietin receptor. The-agonist antibody further induces colony formation at a concentration of 10,000 ng/ml or lower, and has a maximal activity at least 50% higher than that of PEG-rHuMGDF and an 50% effective concentration (EC50) of 100 nM or less.Type: ApplicationFiled: September 14, 2011Publication date: March 1, 2012Inventors: Masayuki KAI, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara
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Patent number: 8048421Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (alias: human c-Mpl).Type: GrantFiled: March 20, 2007Date of Patent: November 1, 2011Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Masayuki Kai, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara
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Publication number: 20100004429Abstract: This invention provides an agonist antibody to a human thrombopoietin receptor (alias: human c-Mpl).Type: ApplicationFiled: March 20, 2007Publication date: January 7, 2010Inventors: Masayuki Kai, Kazuhiro Motoki, Shiro Kataoka, Hideaki Yoshida, Tetsuya Hagiwara