Patents by Inventor Takafumi Tsuboi

Takafumi Tsuboi 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).

  • Patent number: 11835520
    Abstract: A system, method, apparatus and diagnostic test for Plasmodium vivax, to determine a likelihood of a specific timing of infection by P. vivax in a subject, and hence identify individuals with a high probability of being infected with otherwise undetectable liver-stage hypnozoites. The system, method, apparatus and diagnostic test relate to the identification of hypnozoites (“dormant” liver-stages), or at least of the likelihood of the subject being so infected. Optionally and preferably, the specific timing relates to recent infections, for example within the last 9 months.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 5, 2023
    Assignee: The Walter and Eliza Hall Institute of Medical Research
    Inventors: Ivo Mueller, Takafumi Tsuboi, Michael White, Rhea Longley
  • Publication number: 20230322910
    Abstract: The present disclosure includes a monoclonal antibody or antibody fragment that binds to an epitope consisting of 5 to 20 consecutive amino acids in the amino acid sequence of SEQ ID NO: 1, and a method of detecting or quantifying an Ripr-derived malaria vaccine antigen comprising contacting a sample with the monoclonal antibody or antibody fragment.
    Type: Application
    Filed: August 25, 2021
    Publication date: October 12, 2023
    Inventors: Takafumi Tsuboi, Eizo Takashima, Hikaru Nagaoka, Akihisa Fukushima
  • Publication number: 20230109998
    Abstract: Malaria transmission-blocking vaccines with good preservation stability and immunostimulatory action are provided. According the present invention, combination use of a pharmaceutical composition comprising (4E,8E,12E,16E,20E)-N-{2-[{4-[(2-amino-4-{[(3S)-1-hydroxyhexan-3-yl]amino}-6-methylpyrimidin-5-yl)methyl]benzyl}(methyl)amino]ethyl}-4,8,12,17,21,25-hexamethylhexacosa-4,8,12,16,20,24-hexaeneamide, or a pharmaceutically acceptable salt thereof, as a vaccine adjuvant with enhanced specific immune response against antigens and good preservation stability and a malaria vaccine with non-glycosylation, homogeneity, and biological activity allow for the provision of malaria transmission-blocking vaccines with good preservation stability and immunostimulatory action.
    Type: Application
    Filed: November 6, 2020
    Publication date: April 13, 2023
    Inventors: C. Richter King, Yimin Wu, Jordan Lee Plieskatt, Shwu-Maan Lee, Chia-Kuel Wu, Takafumi Tsuboi, Akihisa Fukushima
  • Patent number: 11273212
    Abstract: The present invention relates to a polypeptide consisting of an amino acid sequence selected from: (a) the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8, (b) an amino acid sequence that differs from the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8 by substitution, deletion, addition, or insertion of 1 to 10, preferably 1-5, more preferably 1, 2 or 3 amino acids, and (c) an amino acid sequence that has at least 95%, preferably 97%, more preferably 99% sequence identity with the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8, and a malaria vaccine comprising the polypeptide, for example.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 15, 2022
    Assignees: Sumitomo Dainippon Pharma Co., Ltd., National University Corporation Ehime University
    Inventors: Akihisa Fukushima, Takafumi Tsuboi, Eizo Takashima, Hikaru Nagaoka
  • Publication number: 20210132063
    Abstract: A system, method, apparatus and diagnostic test for Plasmodium vivax, to determine a likelihood of a specific timing of infection by P. vivax in a subject, and hence identify individuals with a high probability of being infected with otherwise undetectable liver-stage hypnozoites. The system, method, apparatus and diagnostic test relate to the identification of hypnozoites (“dormant” liver-stages), or at least of the likelihood of the subject being so infected. Optionally and preferably, the specific timing relates to recent infections, for example within the last 9 months.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 6, 2021
    Applicant: The Walter and Eliza Hall Institute of Medical Research
    Inventors: Ivo Mueller, Takafumi Tsuboi, Michael White, Rhea Longley
  • Publication number: 20190343943
    Abstract: The present invention relates to a polypeptide consisting of an amino acid sequence selected from: (a) the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8, (b) an amino acid sequence that differs from the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8 by substitution, deletion, addition, or insertion of 1 to 10, preferably 1-5, more preferably 1, 2 or 3 amino acids, and (c) an amino acid sequence that has at least 95%, preferably 97%, more preferably 99% sequence identity with the amino acid sequence of SEQ ID NO: 4 or SEQ ID NO: 8, and a malaria vaccine comprising the polypeptide, for example.
    Type: Application
    Filed: November 10, 2017
    Publication date: November 14, 2019
    Inventors: Akihisa Fukushima, Takafumi Tsuboi, Eizo Takashima, Hikaru Nagaoka
  • Patent number: 9222139
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 29, 2015
    Assignees: EHIME UNIVERSITY, OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Patent number: 9222140
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 29, 2015
    Assignees: EHIME UNIVERSITY, OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Patent number: 9200332
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: December 1, 2015
    Assignees: EHIME UNIVERSITY, OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Publication number: 20150322534
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Application
    Filed: July 29, 2015
    Publication date: November 12, 2015
    Applicants: OTSUKA PHARMACEUTICAL CO., LTD., EHIME UNIVERSITY
    Inventors: Takafumi TSUBOI, Eun-Taek HAN
  • Publication number: 20150184252
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Application
    Filed: December 16, 2014
    Publication date: July 2, 2015
    Applicants: EHIME UNIVERSITY, OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takafumi TSUBOI, Eun-Taek HAN
  • Publication number: 20150176083
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 25, 2015
    Applicants: OTSUKA PHARMACEUTICAL CO., LTD., EHIME UNIVERSITY
    Inventors: Takafumi TSUBOI, Eun-Taek HAN
  • Patent number: 8936920
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: January 20, 2015
    Assignees: Ehime University, Otsuka Pharmaceutical Co., Ltd.
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Patent number: 8580274
    Abstract: An objective of the invention is to provide a drug delivery vehicle capable of allowing a vaccine or adjuvant to reach a target cell or tissue efficiently while being capable of improving the immunogenicity of the vaccine or capable of enhancing the immunostimulating effect of the adjuvant as well as a vaccine or adjuvant utilizing the same. Said drug delivery vehicle contains a multimeric protein having a coiled coil structure and a ligand molecule to a receptor of an immune cell.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: November 12, 2013
    Assignee: University of the Ryukyus
    Inventors: Takeshi Arakawa, Takeshi Miyata, Goro Matsuzaki, Takafumi Tsuboi
  • Publication number: 20130149317
    Abstract: The present invention relates to a malaria vaccine comprising: (a) a polypeptide consisting of an amino acid sequence of SEQ ID NO: 1, 2, or 3; (b) a polypeptide consisting of an amino acid sequence of SEQ ID NO: 1, 2, or 3, wherein one or more amino acids are deleted, substituted and/or added and having effect for preventing falciparum malaria; or (c) a polypeptide consisting of an amino acid sequence having 70% or more identity with an amino acid sequence of SEQ ID NO: 1, 2, or 3 and having effect for preventing falciparum malaria.
    Type: Application
    Filed: July 4, 2011
    Publication date: June 13, 2013
    Applicant: CELLFREE SCIENCES CO., LTD.
    Inventors: Takafumi Tsuboi, Motomi Torii, Tatsuya Sawasaki, Yaeta Endo
  • Publication number: 20130017221
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Application
    Filed: June 13, 2012
    Publication date: January 17, 2013
    Applicants: OTSUKA PHARMACEUTICAL CO., LTD., EHIME UNIVERSITY
    Inventors: Takafumi TSUBOI, Eun-Taek HAN
  • Patent number: 8309702
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: November 13, 2012
    Assignees: Ehime University, Otsuka Pharmaceutical Co., Ltd.
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Publication number: 20120100165
    Abstract: An objective of the invention is to provide a drug delivery vehicle capable of allowing a vaccine or adjuvant to reach a target cell or tissue efficiently while being capable of improving the immunogenicity of the vaccine or capable of enhancing the immunostimulating effect of the adjuvant as well as a vaccine or adjuvant utilizing the same. Said drug delivery vehicle contains a multimeric protein having a coiled coil structure and a ligand molecule to a receptor of an immune cell.
    Type: Application
    Filed: February 10, 2010
    Publication date: April 26, 2012
    Applicant: University of the Ryukyus
    Inventors: Takeshi Arakawa, Takeshi Miyata, Goro Matsuzaki, Takafumi Tsuboi
  • Publication number: 20100183679
    Abstract: The present invention provides an easy and rapid method for detecting/identifying the presence or absence of specific Plasmodium parasites and four species of malaria parasites in a human specimen, an anti-malaria measure support system, and a malaria infection-prevention/treatment system, which can contribute to practical diagnosis in a malaria endemic area. According to the present invention, using a genus-specific primer set that can detect four Plasmodium parasites that infect humans at a time, and the primer sets each specific to each of four species of Plasmodium parasites (P. falciparum, P. vivax, P. malariae, and P. ovale), the presence or absence of infection with these parasites can be detected/identified easily and rapidly.
    Type: Application
    Filed: May 25, 2008
    Publication date: July 22, 2010
    Inventors: Takafumi Tsuboi, Eun-Taek Han
  • Publication number: 20080274132
    Abstract: The present invention relates novel methods and compositions for blocking transmission of Plasmodium vivax which cause malaria. In particular, Pvs25 and Pvs28 polypeptides, variants, including deglycosylated forms, and fusion proteins thereof, are disclosed which, when administered to a susceptible organism, induce an immune response against a 25 kD and 28 kD protein, respectively, on the surface of Plasmodium vivax zygotes and ookinetes. This immune response in the susceptible organism can block transmission of malaria.
    Type: Application
    Filed: July 2, 2008
    Publication date: November 6, 2008
    Applicant: The Gov. of the USA as represented by the Secretary of the Dep. of Health and Human Services
    Inventors: David C. KASLOW, Takafumi Tsuboi, Motomi Torii