Patents by Inventor Hiroki KAWAUCHI

Hiroki KAWAUCHI 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).

  • Publication number: 20240158785
    Abstract: An objective of the present invention is to provide target tissue-specific antigen-binding molecules, antigen-binding molecules whose antigen-binding activity varies depending on the concentration of an unnatural compound, libraries comprising a plurality of the antigen-binding molecules which are different from one another, pharmaceutical compositions comprising the antigen-binding molecules, methods of screening for the antigen-binding molecules, and methods for producing the antigen-binding molecules. The present inventors created antigen-binding domains whose antigen-binding activity varies depending on the concentration of a small molecule compound or antigen-binding molecules containing an antigen-binding domain, and libraries comprising a plurality of the antigen-binding domains which are different from one another or antigen-binding domains, and demonstrated that the above-noted objective could be achieved by using the libraries.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 16, 2024
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Shun Shimizu, Kanako Tatsumi, Shojiro Kadono, Hiroki Kawauchi, Kazuhiro Ohara, Masayuki Matsushita, Takashi Emura, Masaki Kamimura
  • Patent number: 11912989
    Abstract: An objective of the present invention is to provide target tissue-specific antigen-binding molecules, antigen-binding molecules whose antigen-binding activity varies depending on the concentration of an unnatural compound, libraries comprising a plurality of the antigen-binding molecules which are different from one another, pharmaceutical compositions comprising the antigen-binding molecules, methods of screening for the antigen-binding molecules, and methods for producing the antigen-binding molecules. The present inventors created antigen-binding domains whose antigen-binding activity varies depending on the concentration of a small molecule compound or antigen-binding molecules containing an antigen-binding domain, and libraries comprising a plurality of the antigen-binding domains which are different from one another or antigen-binding domains, and demonstrated that the above-noted objective could be achieved by using the libraries.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: February 27, 2024
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Shun Shimizu, Kanako Tatsumi, Shojiro Kadono, Hiroki Kawauchi, Kazuhiro Ohara, Masayuki Matsushita, Takashi Emura, Masaki Kamimura
  • Publication number: 20240059774
    Abstract: The present disclosure provides anti-CTLA-4 antibodies and methods of producing and using the antibodies. The present disclosure also provides nucleic acids encoding the anti-CTLA-4 antibodies and host cells containing the nucleic acids. Furthermore, the present disclosure provides polypeptides containing a variant Fc region containing amino acid alterations in a parent Fc region and methods of producing and using the polypeptides.
    Type: Application
    Filed: September 19, 2023
    Publication date: February 22, 2024
    Inventors: Hitoshi KATADA, Kanako TATSUMI, Yutaka MATSUDA, Shun SHIMIZU, Masaki KAMIMURA, Yasunori KOMORI, Yuji HORI, Tomoyuki IGAWA, Hiroki KAWAUCHI, Hiroki HAYASHI, Hiroaki SUSUMU
  • Publication number: 20240002510
    Abstract: The present disclosure provides anti-CTLA-4 antibodies and methods of producing and using the antibodies. The present disclosure also provides nucleic acids encoding the anti-CTLA-4 antibodies and host cells containing the nucleic acids. Furthermore, the present disclosure provides polypeptides containing a variant Fc region containing amino acid alterations in a parent Fc region and methods of producing and using the polypeptides.
    Type: Application
    Filed: June 24, 2022
    Publication date: January 4, 2024
    Inventors: Hitoshi KATADA, Kanako TATSUMI, Yutaka MATSUDA, Shun SHIMIZU, Masaki KAMIMURA, Yasunori KOMORI, Yuji HORI, Tomoyuki IGAWA, Hiroki KAWAUCHI, Hiroki HAYASHI, Hiroaki SUSUMU, Shimon SAKAGUCHI
  • Publication number: 20230058982
    Abstract: The present disclosure provides anti-CTLA-4 antibodies and methods of producing and using the antibodies. The present disclosure also provides nucleic acids encoding the anti-CTLA-4 antibodies and host cells containing the nucleic acids. Furthermore, the present disclosure provides polypeptides containing a variant Fc region and methods of producing and using the polypeptides.
    Type: Application
    Filed: December 27, 2019
    Publication date: February 23, 2023
    Inventors: Hitoshi KATADA, Kanako TATSUMI, Kanako ATSUMI, Shun SHIMIZU, Masaki KAMIMURA, Yasunori KOMORII, Yuji HORI, Tomoyuki IGAWA, Hiroki KAWAUCHI, Hiroaki SUSUMU
  • Publication number: 20230020377
    Abstract: The present disclosure provides anti-CTLA-4 antibodies and methods of producing and using the antibodies. The present disclosure also provides nucleic acids encoding the anti-CTLA-4 antibodies and host cells containing the nucleic acids. Furthermore, the present disclosure provides polypeptides containing a variant Fc region containing amino acid alterations in a parent Fc region and methods of producing and using the polypeptides.
    Type: Application
    Filed: June 24, 2022
    Publication date: January 19, 2023
    Inventors: Hitoshi KATADA, Kanako Tatsumi, Yutaka Matsuda, Shun Shimizu, Masaki Kamimura, Yasunori Komori, Yuji Hori, Tomoyuki Igawa, Hiroki Kawauchi, Hiroki Hayashi, Hiroaki Susumu, Shimon Sakaguchi
  • Publication number: 20220401557
    Abstract: A multiple antigen-binding molecule fusion molecule containing a multiple antigen-binding molecule (?) having an immune cell antigen-binding region and a cancer antigen-binding region, a cancer tissue-specific protease-cleavable linker (?), and a masking molecule (?) containing a polypeptide having the amino acid sequence QDGNE, in which the multiple antigen-binding molecule (?) and the masking molecule (?) are linked via the cancer tissue-specific protease-cleavable linker (?).
    Type: Application
    Filed: June 23, 2022
    Publication date: December 22, 2022
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki IGAWA, Naoka HIRONIWA, Hiroki KAWAUCHI
  • Patent number: 11400157
    Abstract: A multiple antigen-binding molecule fusion molecule containing a multiple antigen-binding molecule (?) having an immune cell antigen-binding region and a cancer antigen-binding region, a cancer tissue-specific protease-cleavable linker (?), and a masking molecule (?) containing a polypeptide having the amino acid sequence QDGNE (SEQ ID NO: 15), in which the multiple antigen-binding molecule (?) and the masking molecule (?) are linked via the cancer tissue-specific protease-cleavable linker (?).
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 2, 2022
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Naoka Hironiwa, Hiroki Kawauchi
  • Publication number: 20220153875
    Abstract: An objective of the present invention is to provide antigen-binding molecules whose antigen-binding activity changes depending on the concentration of a small molecule compound specific to a target tissue, polynucleotides encoding the antigen-binding molecules, vectors containing the polynucleotides, cells carrying the vectors, libraries containing a plurality of the antigen-binding molecules that are different from one another, pharmaceutical compositions containing the antigen-binding molecules, methods of screening for the antigen-binding molecules, methods of producing the same, and the like.
    Type: Application
    Filed: March 19, 2020
    Publication date: May 19, 2022
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hideaki Mizuno, Koichiro Saka, Hiroki Kawauchi, Kuniyasu Kato, Ryoichi Saito, Tomoyuki Igawa, Kazuhiro Ohara, Junya Okude
  • Publication number: 20210324099
    Abstract: An objective of the present disclosure is to provide anti-CD137 antigen-binding molecules which have immunocyte-activating effect, cytotoxic activity, or anti-tumor activity, and meanwhile have reduced effect on non-tumor tissues such as normal tissues and produce less side effects, and methods of using the same. Anti-CD137 antigen-binding molecules which have immunocyte-activating effect, cytotoxic activity, or anti-tumor activity, and meanwhile have reduced effect on non-tumor tissues such as normal tissues and produce less side effects, are provided by discovering and producing CD137 antigen-binding molecules whose binding activity to CD137 depends on various substances (for example, small molecule compounds) in target tissues. Methods of using the same, pharmaceutical formulations, and such are also provided. The present disclosure also provides an antigen-binding molecule whose binding activity to an antigen varies depending on a small molecule compound, a preparation method thereof, and uses thereof.
    Type: Application
    Filed: August 9, 2019
    Publication date: October 21, 2021
    Inventors: Tomoyuki IGAWA, Mika SAKURAI, Shun SHIMIZU, Yuji HORI, Naoka HIRONIWA, Nasa SAVORY, Yoshinori NARITA, Takayuki KAMIKAWA, Taro MIYAZAKI, Shojiro KADONO, Masami HASEGAWA, Kanako TATSUMI, Akira HAYASAKA, Takeaki KAWAI, Futa MIMOTO, Hiroki KAWAUCHI, Masaki KAMIMURA
  • Publication number: 20210180049
    Abstract: An objective of the present invention is to provide target tissue-specific antigen-binding molecules, antigen-binding molecules whose antigen-binding activity varies depending on the concentration of an unnatural compound, libraries comprising a plurality of the antigen-binding molecules which are different from one another, pharmaceutical compositions comprising the antigen-binding molecules, methods of screening for the antigen-binding molecules, and methods for producing the antigen-binding molecules. The present inventors created antigen-binding domains whose antigen-binding activity varies depending on the concentration of a small molecule compound or antigen-binding molecules containing an antigen-binding domain, and libraries comprising a plurality of the antigen-binding domains which are different from one another or antigen-binding domains, and demonstrated that the above-noted objective could be achieved by using the libraries.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 17, 2021
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Igawa, Shigero Tamba, Shun Shimizu, Kanako Tatsumi, Shojiro Kadono, Hiroki Kawauchi, Kazuhiro Ohara, Masayuki Matsushita, Takashi Emura, Masaki Kamimura
  • Patent number: 10961530
    Abstract: An objective of the present invention is to provide target tissue-specific antigen-binding molecules, antigen-binding molecules whose antigen-binding activity varies depending on the concentration of an unnatural compound, libraries comprising a plurality of the antigen-binding molecules which are different from one another, pharmaceutical compositions comprising the antigen-binding molecules, methods of screening for the antigen-binding molecules, and methods for producing the antigen-binding molecules. The present inventors created antigen-binding domains whose antigen-binding activity varies depending on the concentration of a small molecule compound or antigen-binding molecules containing an antigen-binding domain, and libraries comprising a plurality of the antigen-binding domains which are different from one another or antigen-binding domains, and demonstrated that the above-noted objective could be achieved by using the libraries.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 30, 2021
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Shun Shimizu, Kanako Tatsumi, Shojiro Kadono, Hiroki Kawauchi, Kazuhiro Ohara, Masayuki Matsushita, Takashi Emura, Masaki Kamimura
  • Publication number: 20180125972
    Abstract: A multiple antigen-binding molecule fusion molecule containing a multiple antigen-binding molecule (?) having an immune cell antigen-binding region and a cancer antigen-binding region, a cancer tissue-specific protease-cleavable linker (?), and a masking molecule (?) containing a polypeptide having the amino acid sequence QDGNE, in which the multiple antigen-binding molecule (?) and the masking molecule (?) are linked via the cancer tissue-specific protease-cleavable linker (?).
    Type: Application
    Filed: May 13, 2016
    Publication date: May 10, 2018
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki IGAWA, Naoka HIRONIWA, Hiroki KAWAUCHI
  • Publication number: 20160304862
    Abstract: An objective of the present invention is to provide target tissue-specific antigen-binding molecules, antigen-binding molecules whose antigen-binding activity varies depending on the concentration of an unnatural compound, libraries comprising a plurality of the antigen-binding molecules which are different from one another, pharmaceutical compositions comprising the antigen-binding molecules, methods of screening for the antigen-binding molecules, and methods for producing the antigen-binding molecules. The present inventors created antigen-binding domains whose antigen-binding activity varies depending on the concentration of a small molecule compound or antigen-binding molecules containing an antigen-binding domain, and libraries comprising a plurality of the antigen-binding domains which are different from one another or antigen-binding domains, and demonstrated that the above-noted objective could be achieved by using the libraries.
    Type: Application
    Filed: December 4, 2014
    Publication date: October 20, 2016
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki IGAWA, Shigero TAMBA, Shun SHIMIZU, Kanako TATSUMI, Shojiro KADONO, Hiroki KAWAUCHI, Kazuhiro OHARA, Masayuki MATSUSHITA, Takashi EMURA, Masaki KAMIMURA