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).

  • Patent number: 8263396
    Abstract: A method for the production of a replication-deficient recombinant virus vector is disclosed. The replication-deficient recombinant virus vector has a recombinant virus genome with one or more defective viral genes. The method comprises infecting a host cell with a carrier virus having a carrier virus genome encoding one or more trans factors or variants thereof, incubating the infected host cell for a desired period of time, and isolating the replication-deficient recombinant virus vector. The carrier virus is a cytoplasmic virus that retains the carrier virus genome in the cytoplasm of the host cell. The host cell contains the recombinant viral genome and retains the recombinant viral genome in a nucleus of the host cell. Also disclosed is a carrier virus for the production of a replication-deficient recombinant virus vector.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 11, 2012
    Inventor: Weidong Xiao
  • Publication number: 20110244552
    Abstract: A method for the production of a replication-deficient recombinant virus vector is disclosed. The replication-deficient recombinant virus vector has a recombinant virus genome with one or more defective viral genes. The method comprises infecting a host cell with a carrier virus having a carrier virus genome encoding one or more trans factors or variants thereof, incubating the infected host cell for a desired period of time, and isolating the replication-deficient recombinant virus vector. The carrier virus is a cytoplasmic virus that retains the carrier virus genome in the cytoplasm of the host cell. The host cell contains the recombinant viral genome and retains the recombinant viral genome in a nucleus of the host cell. Also disclosed is a carrier virus for the production of a replication-deficient recombinant virus vector.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 6, 2011
    Inventor: Weidong Xiao
  • Publication number: 20100278791
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: November 13, 2009
    Publication date: November 4, 2010
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: JAMES M. WILSON, Weidong Xiao
  • Publication number: 20090079385
    Abstract: The invention provides a charging device that uses switched capacitor voltage converters to charge a battery using solar power. The charger uses boosting topology to efficiently use solar module photovoltaic power. The boosting topology enables a lower voltage to be used resulting in reduced cutting and soldering of photovoltaic cells. The battery charger has overcharge protection and uses inductor-less circuitry.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 26, 2009
    Applicant: MSR Innovations Inc.
    Inventors: Weidong Xiao, Timothy James Roddick, Jason Leonard Scultety
  • Publication number: 20080300174
    Abstract: FVIII heavy chain mutants are provided which exhibit enhanced secretion from transfected cells and robust anti-coagulation activity.
    Type: Application
    Filed: October 11, 2007
    Publication date: December 4, 2008
    Inventor: Weidong Xiao
  • Publication number: 20080050345
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James Wilson, Weidong Xiao
  • Publication number: 20080050343
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James Wilson, Weidong Xiao
  • Publication number: 20080008684
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: February 20, 2007
    Publication date: January 10, 2008
    Applicant: The trustees of the University of Pennsylvania
    Inventors: James Wilson, Weidong Xiao
  • Patent number: 7186552
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 6, 2007
    Assignee: The Trustees of University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Patent number: 7172893
    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: July 26, 2002
    Date of Patent: February 6, 2007
    Assignee: University of North Carolina at Chapel Hill
    Inventors: Joseph E. Rabinowitz, Richard Jude Samulski, Weidong Xiao
  • Publication number: 20060204479
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: May 8, 2006
    Publication date: September 14, 2006
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James Wilson, Weidong Xiao
  • Patent number: 7105345
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: September 12, 2006
    Assignee: The University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20060188484
    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: April 28, 2006
    Publication date: August 24, 2006
    Inventors: Joseph Rabinowitz, Richard Samulski, Weidong Xiao
  • Publication number: 20060188483
    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: April 28, 2006
    Publication date: August 24, 2006
    Inventors: Joseph Rabinowitz, Richard Samulski, Weidong Xiao
  • Patent number: 6943019
    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: September 26, 2002
    Date of Patent: September 13, 2005
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Patent number: 6759237
    Abstract: An improved tet-repressible system is described in which the transgene is expressed under the control of a promoter which is activated upon binding of a fusion protein composed of a reverse tet repressor/activation domain to tet operator sequences located immediately upstream of the transgene promoter. The tet operator sequences are substantially free of interferon inducible response elements (ISRE). The reverse tet repressor is fused to an activation domain which lacks signals for protein clearance, thus extending expression of the fusion protein. Suitably, the tetO sequences are immediately upstream of a quiet promoter.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 6, 2004
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20040057932
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: October 29, 2003
    Publication date: March 25, 2004
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20040057933
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: October 30, 2003
    Publication date: March 25, 2004
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20040057931
    Abstract: The nucleic acid sequences of adeno-associated virus (AAV) serotype 1 are provided, as are vectors and host cells containing these sequences and functional fragments thereof. Also provided are methods of delivering genes via AAV-1 derived vectors.
    Type: Application
    Filed: October 29, 2003
    Publication date: March 25, 2004
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Weidong Xiao
  • Publication number: 20040002159
    Abstract: The present invention provides methods for making and using chimeric AAV particles having broad tissue tropism. The AAV particles may be used to deliver nucleic acid sequences encoding a desired protein wherein infection by chimeric AAV particles provides means to transduce cells with the nucleic acid sequences. Such gene transduction results in production of the desired protein in a cell, and thus establishes or restores the activity of the protein in the cell. The present invention also provides pharmaceutical compositions comprising such chimeric AAV particles for use in the therapeutic treatment of patients.
    Type: Application
    Filed: April 7, 2003
    Publication date: January 1, 2004
    Inventors: Weidong Xiao, Bernd Hauck