Patents by Inventor Keiko Ito

Keiko Ito 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: 11958845
    Abstract: The present invention provides a heterocyclic compound having a HDAC6 inhibitory action, which is useful for the treatment of central nervous system diseases including neurodegenerative diseases, and the like, and a medicament comprising the compound. The present invention relates to a compound represented by the formula (I): wherein each symbol is as defined in the description, or a salt thereof.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: April 16, 2024
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Masahiro Ito, Hideyuki Sugiyama, Takeshi Yamamoto, Keiko Kakegawa, Jinxing Li, Junsi Wang, Takahito Kasahara, Masato Yoshikawa
  • Patent number: 11952620
    Abstract: According to one embodiment, a method of quantifying a target nucleic acid containing a first sequence in a sample is provided. The method includes preparing a substrate on which a plurality of detection regions are arranged, forming a reaction field by placing, on the substrate, a reaction liquid containing a sample, a primer set, and an amplification enzyme, maintaining the reaction field in an isothermal amplification condition, detecting a detection signal for each of the detection regions, determining, for each of the plurality of detection regions, whether positive or negative and detecting or quantifying the target nucleic acid based on the number of positive and/or a rise time of each of the positive detection signal.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: April 9, 2024
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Hashimoto, Keiko Ito, Mika Inada
  • Patent number: 11655505
    Abstract: According to one embodiment, a primer set for elongating a target short-chain nucleic acid containing a first sequence to obtain an elongated product is provided. The elongated product contains a second, a third, a fourth sequence, a complementary sequence of the 1?-th sequence and a sixth sequence. The complementary sequence of the 1?-th sequence is a loop primer sequence. The primer set contains a first elongation primer containing a first elongation primer sequence and a complementary sequence of the sixth sequence, and a second elongation primer containing a second elongation primer sequence, the fourth, the third, and the second sequence.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: May 23, 2023
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiko Ito, Mika Inada, Koji Hashimoto
  • Patent number: 11353418
    Abstract: According to one embodiment, a nucleic acid reaction tool includes a support having a first surface, a covering body having a second surface, and a groove opened on the second surface, and a primer set. The covering body is in contact with the support to form a reaction space surrounded by the first surface and the groove. The groove includes, on an inner surface of the reaction space, rising surfaces opposed to each other, and a rear surface connecting one end of the side surfaces, and a primer fixing region to which the primer set is fixed, the primer fixing region being located at a corner where the one end of the side surfaces connected to the rear surface in the reaction space.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 7, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Hashimoto, Keiko Ito, Mika Inada
  • Publication number: 20220154261
    Abstract: According to one embodiment, a method for detecting target nucleic acid includes the following steps. (A) A reaction field is formed by placing a reaction mixture on an electrode, and the reaction mixture contains the sample, a primer set, an amplification enzyme, 4 mM to 30 mM of magnesium ion, and a redox probe. The redox probe has an oxidation reduction potential, which generates an electric signal of which amplitude increases. (B) The reaction field is maintained under an amplification reaction condition. (C) The electric signal is detected with the electrode. (D) Existence or quantity of the target nucleic acid is determined.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 19, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji HASHIMOTO, Keiko ITO, Mika INADA
  • Publication number: 20210388420
    Abstract: According to one embodiment, a detection method is a method for detecting a plurality of target nucleic acids in a sample. The method includes (a) preparing a chain-elongation nucleic acid set group, a primer set, and a probe immobilized substrate, (b) obtaining the target nucleic acid and a long-chain nucleic acid group containing a first sub-chain-elongation nucleic acid and a second sub-chain-elongation nucleic acid, (c) obtaining an amplification product group by maintaining the long-chain nucleic acid group and the primer set under amplification conditions, (d) detecting presence/absence and/or an amount of hybridization, and (e) detecting the plurality of target nucleic acids.
    Type: Application
    Filed: August 25, 2021
    Publication date: December 16, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiko ITO, Koji HASHIMOTO
  • Patent number: 11130988
    Abstract: According to one embodiment, a detection method is a method for detecting a plurality of target nucleic acids in a sample. The method includes (a) preparing a chain-elongation nucleic acid set group, a primer set, and a probe immobilized substrate, (b) obtaining the target nucleic acid and a long-chain nucleic acid group containing a first sub-chain-elongation nucleic acid and a second sub-chain-elongation nucleic acid, (c) obtaining an amplification product group by maintaining the long-chain nucleic acid group and the primer set under amplification conditions, (d) detecting presence/absence and/or an amount of hybridization, and (e) detecting the plurality of target nucleic acids.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: September 28, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiko Ito, Koji Hashimoto
  • Patent number: 11072822
    Abstract: In general, according to one embodiment, a method containing, reverse-transcribing the first sequence in the target RNA, to obtain a reverse-transcription product containing a first? sequence complementary to the first sequence, dissociating the reverse-transcription product from the target RNA, hybridizing an elongation primer and the reverse-transcription product to elongate both, thereby obtain an elongation product, and maintaining the amplification reaction liquid containing the elongation product, a primer set and Tin(exo-) DNA polymerase and/or Bsm DNA polymerase under an amplification reaction condition, to amplify the first? sequence.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: July 27, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mika Inada, Koji Hashimoto, Keiko Ito
  • Publication number: 20210214805
    Abstract: According to one embodiment, analytical method for determining the presence/absence of the contraction of the prostatic cancer in subjects is provided. The method comprises quantifying hsa-miR-92a-3p in a sample originated from a subject.
    Type: Application
    Filed: March 2, 2021
    Publication date: July 15, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mika INADA, Koji HASHIMOTO, Keiko ITO
  • Publication number: 20210214804
    Abstract: In general, according to one embodiment, analytical method for determining the presence/absence of the contraction of the pancreatic cancer in subjects is provided. The method comprises quantifying hsa-miR-122-5p in a sample originated from a subject.
    Type: Application
    Filed: March 1, 2021
    Publication date: July 15, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji HASHIMOTO, Mika INADA, Keiko ITO
  • Publication number: 20210207215
    Abstract: According to one embodiment, a primer set for elongating a target short-chain nucleic acid containing a first sequence to obtain an elongated product is provided. The elongated product contains a second, a third, a fourth sequence, a complementary sequence of the 1?-th sequence and a sixth sequence. The complementary sequence of the 1?-th sequence is a loop primer sequence. The primer set contains a first elongation primer containing a first elongation primer sequence and a complementary sequence of the sixth sequence, and a second elongation primer containing a second elongation primer sequence, the fourth, the third, and the second sequence.
    Type: Application
    Filed: February 10, 2021
    Publication date: July 8, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiko ITO, Mika INADA, Koji HASHIMOTO
  • Publication number: 20210189504
    Abstract: According to the embodiments, miRNA having a nucleotide sequence represented by SEQ ID NO: 1 is used as a marker for cancer diagnosis. For example, a method for diagnosing cancer in a subject, comprising the step of: measuring the amount of RNA having the nucleotide sequence in a biological sample is disclosed.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 24, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji HASHIMOTO, Mika INADA, Keiko ITO
  • Publication number: 20210139968
    Abstract: In general, according to one embodiment, a method containing, reverse-transcribing the first sequence in the target RNA, to obtain a reverse-transcription product containing a first' sequence complementary to the first sequence, dissociating the reverse-transcription product from the target RNA, hybridizing an elongation primer and the reverse-transcription product to elongate both, thereby obtain an elongation product, and maintaining the amplification reaction liquid containing the elongation product, a primer set and Tin(exo-) DMA polymerase and/or Bsm DMA polymerase under an amplification reaction condition, to amplify the first' sequence.
    Type: Application
    Filed: January 21, 2021
    Publication date: May 13, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mika INADA, Koji HASHIMOTO, Keiko ITO
  • Patent number: 10975433
    Abstract: According to one embodiment, a primer set for elongating a target short-chain nucleic acid containing a first sequence to obtain an elongated product is provided. The elongated product contains a second, a third, a fourth sequence, a complementary sequence of the 1?-th sequence and a sixth sequence. The complementary sequence of the 1?-th sequence is a loop primer sequence. The primer set contains a first elongation primer containing a first elongation primer sequence and a complementary sequence of the sixth sequence, and a second elongation primer containing a second elongation primer sequence, the fourth, the third, and the second sequence.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 13, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiko Ito, Mika Inada, Koji Hashimoto
  • Publication number: 20210079457
    Abstract: According to one embodiment, a method of quantifying a target nucleic acid containing a first sequence in a sample is provided. The method includes preparing a substrate on which a plurality of detection regions are arranged, forming a reaction field by placing, on the substrate, a reaction liquid containing a sample, a primer set, and an amplification enzyme, maintaining the reaction field in an isothermal amplification condition, detecting a detection signal for each of the detection regions, determining, for each of the plurality of detection regions, whether positive or negative and detecting or quantifying the target nucleic acid based on the number of positive and/or a rise time of each of the positive detection signal.
    Type: Application
    Filed: November 11, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji HASHIMOTO, Keiko ITO, Mika INADA
  • Patent number: 10876153
    Abstract: The nucleic acid detection method includes maintaining a reaction liquid containing the sample, a marker substance, polymerase, a primer set, and salt of a predetermined concentration in the reaction field which include a substrate and a probe, under an amplification condition, detecting a signal from the marker substance and determining existence and/or quantity of the target nucleic acid. The predetermined concentration is higher than the concentration in which the peak rate of the amplification reaction and the concentration with which the hybridization rate becomes higher than 0 au, whichever is higher, but not greater than the highest one of the concentrations with which the quantity of detection of the amplification product becomes a threshold value or more.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: December 29, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Hashimoto, Keiko Ito
  • Patent number: 10865438
    Abstract: According to one embodiment, a method of quantifying a target nucleic acid containing a first sequence in a sample is provided. The method includes preparing a substrate on which a plurality of detection regions are arranged, forming a reaction field by placing, on the substrate, a reaction liquid containing a sample, a primer set, and an amplification enzyme, maintaining the reaction field in an isothermal amplification condition, detecting a detection signal for each of the detection regions, determining, for each of the plurality of detection regions, whether positive or negative and detecting or quantifying the target nucleic acid based on the number of positive and/or a rise time of each of the positive detection signal.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: December 15, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Hashimoto, Keiko Ito, Mika Inada
  • Publication number: 20200109447
    Abstract: According to one embodiment, a method for detecting target nucleic acid includes the following steps. (A) A reaction field is formed by placing a reaction mixture on an electrode, and the reaction mixture contains the sample, a primer set, an amplification enzyme, 4 mM to 30 mM of magnesium ion, and a redox probe. The redox probe has an oxidation reduction potential, which generates an electric signal of which amplitude increases. (B) The reaction field is maintained under an amplification reaction condition. (C) The electric signal is detected with the electrode. (D) Existence or quantity of the target nucleic acid is determined.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 9, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji HASHIMOTO, Keiko ITO, Mika INADA
  • Patent number: 10557165
    Abstract: According to one embodiment, a method for detecting target nucleic acid includes the following steps. (A) A reaction field is formed by placing a reaction mixture on an electrode, and the reaction mixture contains the sample, a primer set, an amplification enzyme, 4 mM to 30 mM of magnesium ion, and a redox probe. The redox probe has an oxidation reduction potential, which generates an electric signal of which amplitude increases. (B) The reaction field is maintained under an amplification reaction condition. (C) The electric signal is detected with the electrode. (D) Existence or quantity of the target nucleic acid is determined.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: February 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Hashimoto, Keiko Ito, Mika Inada
  • Publication number: 20190285567
    Abstract: According to one embodiment, a nucleic acid reaction tool includes a support having a first surface, a covering body having a second surface, and a groove opened on the second surface, and a primer set. The covering body is in contact with the support to form a reaction space surrounded by the first surface and the groove. The groove includes, on an inner surface of the reaction space, rising surfaces opposed to each other, and a rear surface connecting one end of the side surfaces, and a primer fixing region to which the primer set is fixed, the primer fixing region being located at a corner where the one end of the side surfaces connected to the rear surface in the reaction space.
    Type: Application
    Filed: August 29, 2018
    Publication date: September 19, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Hashimoto, Keiko Ito, Mika Inada