Patents by Inventor Krishna J. Fisher

Krishna J. Fisher 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: 20220204989
    Abstract: A nucleic acid trans-splicing molecule is provided that can replace an exon in a targeted mammalian ocular gene carrying a defect or mutation causing an ocular disease with an exon having the naturally-occurring sequence without the defect or mutation. The trans-splicing molecule includes a 3? transcription terminator domain which enhances the efficiency of trans-splicing. The 3? TTD comprises a triple helix domain and a tRNA-like domain.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 30, 2022
    Inventors: Krishna J. Fisher, Jean Bennett
  • Patent number: 6387368
    Abstract: The present invention provides a hybrid vector construct which comprises a portion of an adenovirus, 5′ and 3′ ITR sequences from an AAV, and a selected transgene. Other hybrid vectors form a polycation conjugate and incorporate an AAV rep gene in a single particle. These hybrid virus vectors are characterized by high titer transgene delivery to a host cell and the ability to stably integrate the transgene into the host cell chromosome. Also disclosed is the use of the hybrid vectors to produce large quantities of recombinant AAV.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: May 14, 2002
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, William M. Kelley, Krishna J. Fisher
  • Publication number: 20020037867
    Abstract: A method of prolonging gene expression by reducing immune response to a recombinant adeno-associated virus (AAV) bearing a desired gene administered into the muscle of a mammal is described.
    Type: Application
    Filed: February 26, 1999
    Publication date: March 28, 2002
    Inventors: JAMES M. WILSON, KRISHNA J. FISHER
  • Patent number: 6270996
    Abstract: An adenovirus E1/E4 expressing packaging cell line is provided, which permits the generation of recombinant adenoviruses deleted in both gene regions. A method for enhancing the efficiency of transduction of a recombinant AAV into a target cell is provided by infecting a target cell with a recombinant AAV comprising a selected transgene under the control of regulatory sequences. The infected cell is contacted with an agent which facilitates the conversion of single stranded recombinant virus to its double stranded form.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: August 7, 2001
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher, Guang-Ping Gao
  • Patent number: 6261551
    Abstract: An adenovirus E1/E4 expressing packaging cell line is provided, which permits the generation of recombinant adenoviruses deleted in both gene regions. A method for enhancing the efficiency of transduction of a recombinant AAV into a target cell is provided by infecting a target cell with a recombinant AAV comprising a selected transgene under the control of regulatory sequences. The infected cell is contacted with an agent which facilitates the conversion of single stranded recombinant virus to its double stranded form.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: July 17, 2001
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher, Guang-Ping Gao
  • Publication number: 20010006955
    Abstract: A method of prolonging gene expression by reducing immune response to a recombinant adeno-associated virus (AAV) bearing a desired gene administered into the muscle of a mammal is described.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 5, 2001
    Inventors: James M. Wilson, Krishna J. Fisher
  • Patent number: 6251677
    Abstract: The present invention provides a hybrid vector construct which comprises a portion of an adenovirus, 5′ and 3′ ITR sequences from an AAV, and a selected transgene. Also provided is a hybrid virus linked via a polycation conjugate to an AAV rep gene to form a single particle. These trans-infection particles are characterized by high titer transgene delivery to a host cell and the ability to stably integrate the transgene into the host cell chromosome. Also disclosed is the use of the hybrid vectors and viruses to produce large quantities of recombinant AAV.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: June 26, 2001
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, William M. Kelley, Krishna J. Fisher
  • Patent number: 6203975
    Abstract: A recombinant adenovirus and a method for producing the virus are provided which utilize a recombinant shuttle vector comprising adenovirus DNA sequence for the 5′ and 3′ cis-elements necessary for replication and virion encapsidation in the absence of sequence encoding viral genes and a selected minigene linked thereto, and a helper adenovirus comprising sufficient adenovirus gene sequences necessary for a productive viral infection. Desirably the helper gene is crippled by modifications to its 5′ packaging sequences, which facilitates purification of the viral particle from the helper virus.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: March 20, 2001
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher, Shu-Jen Chen, Matthew Weitzman
  • Patent number: 6083716
    Abstract: A recombinant vector comprises chimpanzee adenovirus sequences and a heterologous gene under the control of regulatory sequences. A cell line which expresses chimpanzee adenovirus gene(s) is also disclosed. Methods of using the vectors and cell lines are provided.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: July 4, 2000
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Steven F. Farina, Krishna J. Fisher
  • Patent number: 6001557
    Abstract: A recombinant adenovirus and a method for producing the virus are provided which utilize a recombinant shuttle vector comprising adenovirus DNA sequence for the 5' and 3' cis-elements necessary for replication and virion encapsidation in the absence of sequence encoding viral genes and a selected minigene linked thereto, and a helper adenovirus comprising sufficient adenovirus gene sequences necessary for a productive viral infection. Desirably, the helper gene is crippled by modifications to its 5' packaging sequences, which facilitates purification of the viral particle from the helper virus.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 14, 1999
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher, Shu-Jen Chen, Matthew Weitzman
  • Patent number: 5871982
    Abstract: The present invention provides a hybrid vector construct which comprises a portion of an adenovirus, 5' and 3'ITR sequences from an AAV, and a selected transgene. Also provided is a hybrid virus linked via a polycation conjugate to an AAV rep gene to form a single particle. These trans-infection particles are characterized by high titer transgene delivery to a host cell and the ability to stably integrate the transgene into the host cell chromosome. Also disclosed is the use of the hybrid vectors and viruses to produce large quantities of recombinant AAV.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: February 16, 1999
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, William M. Kelley, Krishna J. Fisher
  • Patent number: 5866552
    Abstract: A method of gene transfer involving administering a recombinant adeno-associated virus (AAV) bearing the desired gene into the muscle of the animal is described.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: February 2, 1999
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher
  • Patent number: 5856152
    Abstract: The present invention provides a hybrid vector construct which comprises a portion of an adenovirus, 5' and 3' ITR sequences from an AAV, and a selected transgene. Other hybrid vectors form a polycation conjugate and incorporate an AAV rep gene in a single particle. These hybrid virus vectors are characterized by high titer transgene delivery to a host cell and the ability to stably integrate the transgene into the host cell chromosome. Also disclosed is the use of the hybrid vectors to produce large quantities of recombinant AAV.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: January 5, 1999
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, William M. Kelley, Krishna J. Fisher
  • Patent number: 5756283
    Abstract: A method for enhancing the efficiency of transduction of a recombinant AAV into a target cell is provided. The target cell is infected with a recombinant adeno-associated virus comprising a selected transgene under the control of regulatory sequences. The infected cell is contacted with an agent which facilitates the conversion of single stranded recombinant virus to its double stranded form. When this conversion occurs in the target cell, enhanced transduction of the recombinant virus into said target cell results. The agent can be a helper virus providing a gene which facilitates the conversion, or an agent to which the infected cell is exposed, which facilitates the conversion. In a similar manner, a novel recombinant AAV is provided which contains the facilitating gene and the transgene. The methods may be performed ex vivo or in vivo.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 26, 1998
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: James M. Wilson, Krishna J. Fisher, Guang-Ping Gao