Patents by Inventor Kanako Tatsumi

Kanako Tatsumi 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: 20240043515
    Abstract: In one non-limiting embodiment, polypeptides comprising a variant Fc region which contains amino acid alterations in a parent Fc region, and methods for producing such polypeptides, are provided.
    Type: Application
    Filed: August 27, 2021
    Publication date: February 8, 2024
    Inventors: Hitoshi KATADA, Kanako TATSUMI
  • 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: 20230416371
    Abstract: In one non-limiting embodiment, polypeptides comprising a variant Fc region which contains amino acid alterations in a parent Fc region, and methods for producing such polypeptides, are provided.
    Type: Application
    Filed: August 28, 2020
    Publication date: December 28, 2023
    Inventors: Hitoshi KATADA, Kanako TATSUMI
  • Publication number: 20230322898
    Abstract: The present invention provides a pharmaceutical composition comprising cells expressing a chimeric receptor, for use in combination with administration of an antigen-binding molecule, wherein the chimeric receptor comprises an extracellular domain, the extracellular domain comprises an extracellular domain of an immunoreceptor, an extracellular domain variant of an immunoreceptor, or a portion thereof, and the antigen-binding molecule is a multispecific antigen-binding molecule having a target antigen recognition site and an immunoreceptor recognition site which recognizes the immunoreceptor.
    Type: Application
    Filed: July 30, 2021
    Publication date: October 12, 2023
    Applicants: Chugai Seiyaku Kabushiki Kaisha, Yamaguchi University
    Inventors: Tomoyuki Igawa, Mika Sakurai, Takashi Suzuki, Kanako Tatsumi, Shun Shimizu, Koji Tamada, Yukimi Sakoda
  • Publication number: 20230279099
    Abstract: The present inventors discovered that problems of existing antibody pharmaceuticals can be solved by producing antigen-binding molecules that contain an antigen-binding domain whose antigen-binding activity varies depending on the concentration of a target tissue-specific compound. Use of antigen-binding molecules of the present invention enables various diseases that originate from a target tissue to be treated in a manner specific to the target tissue.
    Type: Application
    Filed: April 25, 2023
    Publication date: September 7, 2023
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Kanako Tatsumi, Shun Shimizu, Shojiro Kadono
  • Patent number: 11673947
    Abstract: The present inventors discovered that problems of existing antibody pharmaceuticals can be solved by producing antigen-binding molecules that contain an antigen-binding domain whose antigen-binding activity varies depending on the concentration of a target tissue-specific compound. Use of antigen-binding molecules of the present invention enables various diseases that originate from a target tissue to be treated in a manner specific to the target tissue.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: June 13, 2023
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Kanako Tatsumi, Shun Shimizu, Shojiro Kadono
  • 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: 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: 20190359704
    Abstract: The present inventors discovered that the above-mentioned problems can be solved by producing antigen-binding molecules that contain an antigen-binding domain whose antigen-binding activity varies depending on the concentration of a target tissue-specific compound. Use of antigen-binding molecules of the present invention enables various diseases that originate from a target tissue to be treated in a manner specific to the target tissue.
    Type: Application
    Filed: August 13, 2019
    Publication date: November 28, 2019
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tomoyuki Igawa, Shigero Tamba, Kanako Tatsumi, Shun Shimizu, Shojiro Kadono
  • 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
  • Publication number: 20150166654
    Abstract: The present inventors discovered that the above-mentioned problems can be solved by producing antigen-binding molecules that contain an antigen-binding domain whose antigen-binding activity varies depending on the concentration of a target tissue-specific compound. Use of antigen-binding molecules of the present invention enables various diseases that originate from a target tissue to be treated in a manner specific to the target tissue.
    Type: Application
    Filed: May 30, 2013
    Publication date: June 18, 2015
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Igawa, Shigero Tamba, Kanako Tatsumi, Shun Shimizu, Shojiro Kadono