Patents by Inventor Weidong Xiao

Weidong Xiao 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).

  • Publication number: 20030073232
    Abstract: Methods for efficient production of recombinant AAV employ a host cell containing a first nucleic acid molecule comprising from 5′ to 3′, a parvovirus P5 promoter, a spacer, an AAV rep sequence and an AAV cap gene sequence, wherein said spacer is of sufficient size to reduce expression of the rep78 and rep68 gene products; a second nucleic acid molecule comprising a minigene comprising a transgene flanked by AAV inverse terminal repeats (ITRs) and under the control of regulatory sequences directing expression thereof in a host cell; and helper functions essential to the replication and packaging of rAAV, which functions are not provided by the first or second nucleic acid molecules. Host cells and molecule constructs are also described.
    Type: Application
    Filed: September 26, 2002
    Publication date: April 17, 2003
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20030053990
    Abstract: The present invention provides genetically-engineered parvovirus capsids and viruses designed to introduce a heterologous gene into a target cell. The parvoviruses of the invention provide a repertoire of vectors with altered antigenic properties, packaging capabilities, and/or cellular tropisms as compared with current AAV vectors.
    Type: Application
    Filed: July 26, 2002
    Publication date: March 20, 2003
    Applicant: University of North Carolina at Chapel Hill
    Inventors: Joseph E. Rabinowitz, Richard Jude Samulski, Weidong Xiao
  • Patent number: 6491907
    Abstract: The present invention provides genetically-engineered parvovirus capsids and viruses designed to introduce a heterologous gene into a target cell. The parvoviruses of the invention provide a repertoire of vectors with altered antigenic properties, packaging capabilities, and/or cellular tropisms as compared with current AAV vectors.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: December 10, 2002
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph E. Rabinowitz, Richard Jude Samulski, Weidong Xiao
  • Patent number: 6482634
    Abstract: Methods for efficient production of recombinant AAV employ a host cell containing a first nucleic acid molecule comprising from 5′ to 3′, a parvovirus P5 promoter, a spacer, an AAV rep sequence and an AAV cap gene sequence, wherein said spacer is of sufficient size to reduce expression of the rep78 and rep68 gene products; a second nucleic acid molecule comprising a minigene comprising a transgene flanked by AAV inverse terminal repeats (ITRs) and under the control of regulatory sequences directing expression thereof in a host cell; and helper functions essential to the replication and packaging of rAAV, which functions are not provided by the first or second nucleic acid molecules. Host cells and molecule constructs are also described.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: November 19, 2002
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20020045264
    Abstract: The present invention related to methods and compositions comprising recombinant vectors comprising chimeric capsids. The chimeric capsids confer an altered tropism that permits selective targeting of desired cells.
    Type: Application
    Filed: March 13, 2001
    Publication date: April 18, 2002
    Inventors: Matthew J. During, Weidong Xiao
  • Patent number: 6329181
    Abstract: The present invention provides methods and compositions for preparations of recombinant parvovirus virions with a reduced number of replication competent particles. The compositions of the present invention include nucleic acids encoding parvovirus helper functions which contain at least one non-native intron sequence. The present invention also includes helper function vectors, host cells transfected with the helper function vectors, methods of using the helper function vectors, and recombinant parvovirus virions produced by such methods.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: December 11, 2001
    Assignee: Neurologix, Inc.
    Inventors: Weidong Xiao, Matthew J. During, Lei Cao