Patents Assigned to Ixsys, Inc.
  • Patent number: 6849425
    Abstract: The invention provides a method of conferring donor CDR binding affinity onto an antibody acceptor variable region framework. The invention also provides a method of simultaneously grafting and optimizing the binding affinity of a variable region binding fragment. A method of optimizing the binding affinity of an antibody variable region is also provided.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: February 1, 2005
    Assignee: Ixsys, Inc.
    Inventors: William D. Huse, Jeffry D. Watkins, Herren Wu
  • Publication number: 20040006213
    Abstract: The invention provides a Vitaxin antibody and a LM609 grafted antibody exhibiting selective binding affinity &agr;v&bgr;3. The Vitaxin antibody consists of at least one Vitaxin heavy chain polypeptide and at least one Vitaxin light chain polypeptide or functional fragments thereof. Also provided are the Vitaxin heavy and light chain polypeptides and functional fragments. The LM609 grafted antibody consists of at least one CDR grafted heavy chain polypeptide and at least one CDR grafted light chain polypeptide or functional fragment thereof. The invention additionally provides a high affinity LM609 grafted antibody comprising one or more CDRs having at least one amino acid substitution, where the &agr;v&bgr;3 binding activity of the high affinity LM609 grafted antibody is enhanced. Nucleic acids encoding Vitaxin and LM609 grafted heavy and light chains as well as nucleic acids encoding the parental non-human antibody LM609 are additionally provided.
    Type: Application
    Filed: June 16, 2003
    Publication date: January 8, 2004
    Applicant: Ixsys, Inc.
    Inventors: William D. Huse, Scott M. Glaser
  • Publication number: 20030208048
    Abstract: The invention provides a Vitaxin antibody and a LM609 grafted antibody exhibiting selective binding affinity to &agr;v&bgr;3. The Vitaxin antibody consists of at least one Vitaxin heavy chain polypeptide and at least one Vitaxin light chain polypeptide or functional fragments thereof. Also provided are the Vitaxin heavy and light chain polypeptides and functional fragments. The LM609 grafted antibody consists of at least one CDR grafted heavy chain polypeptide and at least one CDR grafted light chain polypeptide or functional fragment thereof. Nucleic acids encoding Vitaxin and LM609 grafted heavy and light chains as well as nucleic acids encoding the parental non-human antibody LM609 are additionally provided. Functional fragments of such encoding nucleic acids are similarly provided. The invention also provides a method of inhibiting a function of &agr;v&bgr;3.
    Type: Application
    Filed: May 30, 2003
    Publication date: November 6, 2003
    Applicant: Ixsys, Inc.
    Inventors: William D. Huse, Scott M. Glaser
  • Publication number: 20030120044
    Abstract: The invention provides a method of conferring donor CDR binding affinity onto an antibody acceptor variable region framework. The invention also provides a method of simultaneously grafting and optimizing the binding affinity of a variable region binding fragment. A method of optimizing the binding affinity of an antibody variable region is also provided.
    Type: Application
    Filed: October 18, 2001
    Publication date: June 26, 2003
    Applicant: Ixsys, Inc.
    Inventors: William D. Huse, Jeffry D. Watkins, Herren Wu
  • Patent number: 6531580
    Abstract: The invention provides enhanced LM609 grafted antibodies exhibiting selective binding affinity to &agr;V&bgr;3, or a functional fragment thereof. The invention also provides nucleic acid molecules encoding the enhanced LM609 grafted antibodies. Additionally provided are methods of inhibiting a function of &agr;V&bgr;3 by contacting &agr;V&bgr;3 with an enhanced LM609 grafted antibody.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: March 11, 2003
    Assignee: Ixsys, Inc.
    Inventors: William D. Huse, Herren Wu
  • Publication number: 20020182214
    Abstract: The invention provides a method of reducing the proliferation of a neoplastic cell. The method consists of contacting the neoplastic cell with a cytotoxic or cytostatic binding agent specifically reactive with an aberrantly expressed vesicular membrane associated neoplastic cell specific internalizing antigen. The neoplastic cell specific internalizing anitgen can be selected from the group consisting of lamp-2 and limp II families of lysosomal integral membrane proteins. Also provided is a method of intracellular targeting of a cytotoxic or cytostatic agent to a neoplastic cell population.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 5, 2002
    Applicant: IXSYS, INC.
    Inventors: William D. Huse, Jeffry D. Watkins
  • Patent number: 6420126
    Abstract: The invention provides a method of reducing the proliferation of a neoplastic cell. The method consists of contacting the neoplastic cell with a cytotoxic or cytostatic binding agent specifically reactive with an aberrantly expressed vesicular membrane associated neoplastic cell specific internalizing antigen. The neoplastic cell specific internalizing anitgen can be selected from the group consisting of lamp-2 and limp II families of lysosomal integral membrane proteins. Also provided is a method of intracellular targeting of a cytotoxic or cytostatic agent to a neoplastic cell population.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: July 16, 2002
    Assignee: Ixsys, Inc.
    Inventors: William D. Huse, Jeffry D. Watkins
  • Patent number: 6331431
    Abstract: A high throughput device is provided for simultaneously isolating periplasmic fractions from multiple samples of host cells. The device can be formatted to operate in a series. A method for simultaneously isolating multiple periplasmic fractions is also provided. The method includes (a) providing a high throughput device for isolating periplasmic fractions from multiple samples of host cells having an outer membrane via attaching a removable sample chamber having a membrane chamber wall to a vacuum chamber and applying a vacuum thereto (b) removing media with the vacuum and (c) removing the outer membrane of the host cells (d) attaching a collection chamber to the vacuum chamber and applying a vacuum thereto in order to carry out a collection of the periplasmic fractions that pass through the membrane of the chamber wall from the host cells.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: December 18, 2001
    Assignee: Ixsys, Inc.
    Inventors: Scott M. Glaser, William D. Huse, William P. MacConnell
  • Patent number: 6258530
    Abstract: A composition of matter comprising a plurality of procaryotic cells containing a diverse population of expressible oligonucleotides operationally linked to expression elements, said expressible oligonucleotides having a desirable bias of random codon sequences.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: July 10, 2001
    Assignee: Ixsys, INC.
    Inventor: William D. Huse
  • Patent number: 5871974
    Abstract: A composition of matter comprising a plurality of procaryotic cells containing diverse combinations of first and second DNA sequences encoding first and second polypeptides which form a heteromeric receptor exhibiting binding activity toward a preselected molecule, those heteromeric receptors being expressed on the surface of filamentous bacteriophage.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: February 16, 1999
    Assignee: Ixsys Inc.
    Inventor: William D. Huse
  • Patent number: 5862514
    Abstract: This invention provides a computer-executed method and means for simulating chemical synthesis. The invention concerns the simulation, by a programmed general purpose digital computer, of chemicals that have biological functions, and more specifically, concerns computer-implemented simulation of such chemicals based upon their synthesis and their assayed biological activity.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: January 19, 1999
    Assignee: Ixsys, Inc.
    Inventors: William D. Huse, Zhengxu He, Yifeng Wang
  • Patent number: 5523388
    Abstract: The invention provides a method of synthesizing oligonucleotides having random tuplets using individual monomers. The steps consist of: (1) sequentially coupling monomers on separate supports to form at least two different tuplets, the coupling is performed in separate reaction vessels; (2) mixing the supports from the reaction vessels; (3) dividing the mixed supports into two or more separate reaction vessels; and (4) repeating steps (1) through (3) one or more times in the reaction vessels of step (3), wherein the last step ends at step (2). Additionally, the oligonucleotides can be cleaved from the supports.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: June 4, 1996
    Assignee: Ixsys, Inc.
    Inventor: William D. Huse
  • Patent number: 5264563
    Abstract: The invention provides a method of synthesizing oligonucleotides having random tuplets using individual monomers. The steps consist of: (1) sequentially coupling monomers on separate supports to form at least two different tuplets, the coupling is performed in separate reaction vessels; (2) mixing the supports from the reaction vessels; (3) dividing the mixed supports into two or more separate reaction vessels; and (4) repeating steps (1) through (3) one or more times in the reaction vessels of step (3), wherein the last step ends at step (2). Additionally, the oligonucleotides can be cleaved from the supports.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Ixsys Inc.
    Inventor: William D. Huse