Patents by Inventor Kiyosumi Takaishi

Kiyosumi Takaishi 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: 11230709
    Abstract: The present invention aims at establishing a molecular therapy for Alport syndrome. The present invention provides an oligonucleotide of 15-30 bp comprising a nucleotide sequence complementary to the cDNA of COL4A5 gene, wherein the oligonucleotide is capable of inducing skipping of an exon which has a truncating mutation found in COL4A5 gene in Alport syndrome patients and whose nucleotide number is a multiple of 3, a pharmaceutically acceptable salt thereof, or a solvate thereof. Also provided is a pharmaceutical drug comprising the above oligonucleotide, a pharmaceutically acceptable salt thereof, or a solvate thereof (therapeutic drug for Alport syndrome).
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: January 25, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, DAIICHI SANKYO COMPANY LIMITED
    Inventors: Kazumoto Iijima, Kandai Nozu, Akemi Shono, Makoto Koizumi, Yoshiyuki Onishi, Kiyosumi Takaishi, Tomomi Adachi
  • Publication number: 20200172903
    Abstract: The objective of the present invention is to provide nucleic acid therapeutics which exhibits more excellent effect and which shows a substantivity for a prolonged period to suppress an expression of ?-synuclein. The oligonucleotide or a pharmacologically acceptable salt thereof according to the present invention is characterized in comprising at least one 2?-O,4?-C-ethylene nucleoside, wherein the oligonucleotide can hybridize with ?-synuclein gene, has an activity to suppress an expression of the ?-synuclein gene, and is complementary to the ?-synuclein gene, 5? end of the oligonucleotide is a nucleotide complementary to the specific nucleotide, the oligonucleotide is complementary to at least a part of SEQ ID NO: 1, and the oligonucleotide has a length of 13 or more and 15 or less nucleotides.
    Type: Application
    Filed: July 3, 2018
    Publication date: June 4, 2020
    Inventors: Masayuki NAKAMORI, Hideki MOCHIZUKI, Satoshi OBIKA, Makoto KOIZUMI, Akifumi NAKAMURA, Kiyosumi TAKAISHI, Yumiko ASAHI
  • Publication number: 20200080080
    Abstract: The present invention aims at establishing a molecular therapy for Alport syndrome. The present invention provides an oligonucleotide of 15-30 bp comprising a nucleotide sequence complementary to the cDNA of COL4A5 gene, wherein the oligonucleotide is capable of inducing skipping of an exon which has a truncating mutation found in COL4A5 gene in Alport syndrome patients and whose nucleotide number is a multiple of 3, a pharmaceutically acceptable salt thereof, or a solvate thereof. Also provided is a pharmaceutical drug comprising the above oligonucleotide, a pharmaceutically acceptable salt thereof, or a solvate thereof (therapeutic drug for Alport syndrome).
    Type: Application
    Filed: December 25, 2017
    Publication date: March 12, 2020
    Applicants: DAIICHI SANKYO COMPANY, LIMITED, NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
    Inventors: Kazumoto IIJIMA, Kandai NOZU, Akemi SHONO, Makoto KOIZUMI, Yoshiyuki ONISHI, Kiyosumi TAKAISHI, Tomomi ADACHI
  • Patent number: 8735425
    Abstract: The present invention relates to a compound or a pharmacologically acceptable salt thereof having an excellent DGAT inhibitory effect and feeding suppressant effect. The present invention provides a compound represented by the general formula (I), or pharmacologically acceptable salt thereof: [wherein, R1 represents a phenylaminocarbonyl group that may be substituted with 1 to 5 group(s) independently selected from Substituent Group A, a benzoxazol-2-yl group that may be substituted with 1 to 3 group(s) independently selected from Substituent Group A, or the like; R2 independently represents a C1-C6 alkyl group; R3 represents a group represented by the formula —C(?O)—O—R4 or the like; R4 represents a hydrogen atom, a C1-C6 alkyl group that may be substituted with 1 to 3 group(s) independently selected from Substituent Group B, or the like; X represents an oxygen atom, a methylene group, or a group represented by the formula —NH—, or the like; L represents a single bond, a methylene group, or the like; .
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: May 27, 2014
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Yoshikazu Uto, Hiroshi Karasawa, Kiyosumi Takaishi
  • Publication number: 20120202847
    Abstract: The present invention relates to a compound or a pharmacologically acceptable salt thereof having an excellent DGAT inhibitory effect and feeding suppressant effect. The present invention provides trans-6-[3-(2,4-difluoro-phenyl)-ureido]-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 4-carboxymethyl-cyclohexyl ester, trans-6-[3-(2-chloro-phenyl)-ureido]-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 4-carboxymethyl-cyclohexyl ester, trans-6-[3-(2,3-difluoro-phenyl)-ureido]-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 4-carboxymethyl-cyclohexyl ester, trans-6-[3-(2,5-difluoro-phenyl)-ureido]-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 4-carboxymethyl-cyclohexyl ester, trans-6-[3-(2,6-difluoro-phenyl)-ureido]-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 4-carboxymethyl-cyclohexyl ester, or the like, or a pharmacologically acceptable salt thereof.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 9, 2012
    Inventors: Yoshikazu Uto, Hiroshi Karasawa, Kiyosumi Takaishi
  • Publication number: 20110034481
    Abstract: The present invention relates to a compound or a pharmacologically acceptable salt thereof having an excellent DGAT inhibitory effect and feeding suppressant effect.
    Type: Application
    Filed: September 9, 2010
    Publication date: February 10, 2011
    Inventors: Yoshikazu Uto, Hiroshi Karasawa, Kiyosumi Takaishi