Patents by Inventor Kazuko Handa

Kazuko Handa 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: 8163497
    Abstract: Human antibodies and antigen-binding portions of those antibodies that specifically bind extended Type I chain glycosphingolipids are provided.
    Type: Grant
    Filed: September 7, 2008
    Date of Patent: April 24, 2012
    Assignee: Glyconex Inc.
    Inventors: Tong-Hsuan Chang, Jerry Ting, Tsai-Hsia Hong, Mei-Chun Yang, Liahng-Yirn Liu, Shu-Yen Chang, Ying-Jin Chen, Jaw-Yuan Wen, Kazuko Handa, Sen-itiroh Hakomori
  • Publication number: 20110142844
    Abstract: Human antibodies and antigen-binding portions of those antibodies that specifically bind extended Type I chain glycosphingolipids are provided.
    Type: Application
    Filed: September 7, 2008
    Publication date: June 16, 2011
    Applicant: GLYCONEX INC.
    Inventors: Tong-Hsuan Chang, Jerry Ting, Tsai-Hsia Hong, Mei-Chun Yang, Liahng-Yirn Liu, Shu-Yen Chang, Ying-Jin Chen, Jaw-Yuan Wen, Kazuko Handa, Sen-itiroh Hakomori
  • Publication number: 20070275019
    Abstract: A vaccine and method to prevent or to retard the growth and replication of cancer cells that express a carbohydrate wherein the vaccine comprises: (a) a pharmaceutically effective amount of a carbohydrate antigen found on said cancer cells, or a mimetic thereof; and (b) a pharmaceutically acceptable carrier. The carbohydrate antigen can be Tn or sialyl-Tn.
    Type: Application
    Filed: September 25, 2003
    Publication date: November 29, 2007
    Inventors: Sen-Itiroh Hakomori, Kazuko Handa
  • Publication number: 20070116727
    Abstract: A vaccine and method to prevent or to retard the growth and replication of cancer cells that express a carbohydrate wherein the vaccine comprises: (a) a pharmaceutically effective amount of a carbohydrate antigen found on said cancer cells, or a mimetic thereof; and (b) a pharmaceutically acceptable carrier. The carbohydrate antigen can be Tn or sialyl-Tn.
    Type: Application
    Filed: September 25, 2003
    Publication date: May 24, 2007
    Inventors: Sen-Itiroh Hakomori, Kazuko Handa
  • Publication number: 20070065954
    Abstract: The present invention provides an SPR system and corresponding methods of use, for determining the presence or concentration of tumor-associated antigens in cancer patient samples. The SPR system may have multiple channels, with each channel having operably affixed thereto an antibody specific for a tumor-associated antigen, so as to allow detection of multiple tumor-associated antigens simultaneously. When a biological sample from a patient is applied to the SPR system, the presence of two or more tumor-associated antigens can be determined by measuring an SPR signal shift from each channel. The SPR system may detect the presence or concentration of a tumor-associated carbohydrate antigen, where the sensor surface contains affixed thereto an antibody specific for the glycosyl epitope, as well as an antibody specific for the polypeptide to which the carbohydrate antigen is naturally associated in cancer patients.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 22, 2007
    Inventors: Minoru Taya, Fengyu Su, Chunye Xu, Kazuko Handa, Senitiroh Hakomori, Kimie Murayama
  • Publication number: 20050245479
    Abstract: Systematic chemical analysis of glycosphingolipid (GSL) fractions from large quantities of normal human neutrophils and HL60 cells failed to detect GSL's which are binding targets of selectin. A series of long-chain, unbranched polylactosamine GSL's with a terminally sialylated, internally polyfucosylated structure bind selectins.
    Type: Application
    Filed: December 4, 2003
    Publication date: November 3, 2005
    Inventors: Kazuko Handa, Mark Stroud, Steven Levery, Tatsushi Toyokuni, Sen-Itiroh Hakomori, Yu Song
  • Publication number: 20030186935
    Abstract: Systematic chemical analysis of glycosphingolipid (GSL) fractions from large quantities of normal human neutrophils and HL60 cells failed to detect GSL's containing an SLex structure. Instead, the binding target of E-selectin was revealed to be a series of long-chain, unbranched polylactosamine GSL's with a terminally sialylated, internally polyfucosylated structure, called, “myeloglycan”.
    Type: Application
    Filed: April 25, 2003
    Publication date: October 2, 2003
    Inventors: Kazuko Handa, Mark R. Stroud, Steven B. Levery, Tatsushi Toyokuni, Sen-Itiroh Hakomori
  • Publication number: 20030170249
    Abstract: A vaccine and method to prevent or to retard the growth and replication of cancer cells that express a carbohydrate wherein the vaccine comprises: (a) a pharmaceutically effective amount of a carbohydrate antigen found on said cancer cells, or a mimetic thereof; and (b) a pharmaceutically acceptable carrier. The carbohydrate antigen can be Tn or sialyl-Tn.
    Type: Application
    Filed: January 9, 2002
    Publication date: September 11, 2003
    Inventors: Sen-Itiroh Hakomori, Kazuko Handa
  • Publication number: 20030064956
    Abstract: A series of long chain, unbranched polylactosamine glycosphingolipids with terminally sialylated, internally polyfucosylated structures binds selectins.
    Type: Application
    Filed: February 19, 2002
    Publication date: April 3, 2003
    Inventors: Kazuko Handa, Mark R. Stroud, Steven Levery, Tatsushi Toyokuni, Sen-Itiroh Hakomori, Yu Song
  • Patent number: 6133239
    Abstract: An unbranched polylactosamine comprising at least 6 monosaccharides and having terminal .alpha.2.fwdarw.3 sialylation and internal .alpha.1.fwdarw.3 fucosylation at various N-acetylglucosamine residues except for solely at the penultimate N-acetylglucosamine residue.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: October 17, 2000
    Assignees: The Biomembrane Institute, Seikagaku Corporation
    Inventors: Kazuko Handa, Mary Ellen K. Salyan, Mark R. Stroud, Sen-itiroh Hakomori
  • Patent number: 5876715
    Abstract: The invention relates to antibodies that specifically bind a myelorollin comprising an unbranched polylactosamine comprising at least 10 monosaccharides and having terminal .alpha.2.fwdarw.3 sialylation and internal .alpha.1.fwdarw.3 fucosylation at various N-acetylglucosamine residues except the penultimate N-acetylglucosamine residue. The invention also relates to a method of using such antibodies to inhibit E-selectin-dependent rolling of a cell on another cell, wherein one of the cells expresses a myelorollin that binds the antibodies.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: March 2, 1999
    Assignees: The Biomembrane Institute, Seikagaku Corporation
    Inventors: Kazuko Handa, Mary Ellen K. Salyan, Mark R. Stroud, Sen-itiroh Hakomori
  • Patent number: 5331014
    Abstract: The invention relates to a novel compound, compositions and medicaments thereof and a method of inhibiting cell proliferation, platelet aggregation (induced by various factors) and inhibiting malignant phenotypes of tumor cells such as those having a metastatic property, and modulating cell adhesion molecule expression and function using said compound, composition or medicament. N,N,N-trimethylsphingosine shows superior cell proliferation inhibitory and anti-metastatic activity over related compounds.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: July 19, 1994
    Assignee: The Biomembrane Institute
    Inventors: Satoshi Kimura, Yasuyuki Igarashi, Sen-itiroh Hakomori, Mohammad N. Ahmad, Hirofumi Okoshi, Kazuko Handa
  • Patent number: 5268364
    Abstract: O-glycosylation and O-glycosylation extension inhibitors influence selectin-dependent interactions between cells and between cells and platelets.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: December 7, 1993
    Assignee: The Biomembrane Institute
    Inventors: Naoya Kojima, Kazuko Handa, Sen-Itiroh Hakomori
  • Patent number: 5151360
    Abstract: The invention relates to a novel compound, compositions and medicaments thereof and a method of inhibiting cell proliferation, platelet aggregation (induced by various factors) and inhibiting malignant phenotypes of tumor cells such as those having a metastatic property, and modulating cell adhesion molecule expression and function using said compound, composition or medicament. N,N,N-trimethylsphingosine shows superior cell proliferation inhibitory an anti-metastatic activity over related compounds.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: September 29, 1992
    Assignee: Biomembrane Institute
    Inventors: Kazuko Handa, Yasuyuki Igarashi, Mahammad N. Ahmad, Sen-Itiroh Hakomori