Patents by Inventor Shang-Zhen Zhou

Shang-Zhen Zhou 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: 20030166284
    Abstract: Provided are methods for selectively expressing therapeutic molecules, such as secretory proteins, antisense molecules and ribozymes, in the liver. The methods find use in treating hepatic diseases or conditions. The methods also find use in treating any disease or condition in which systemic administration of the therapeutic substance, for example, a secretory protein, is desired. The methods involve administering to a mammalian patient having a need for liver expression of a therapeutic molecule an AAV vector containing a therapeutically effective amount of the therapeutic molecule. Also provided are novel vectors employable in these methods.
    Type: Application
    Filed: March 28, 2002
    Publication date: September 4, 2003
    Applicant: Chiron Corporation
    Inventors: Arun Srivastava, Selvarangan Ponnazhagan, Robert H. Schloemer, Xu-Shan Wang, Mervin C. Yoder, Shang-Zhen Zhou, Jaime Escobedo, Varavani Dwarki
  • Patent number: 6521225
    Abstract: The present invention is directed to a recombinant adenovirus vector comprising two inverted terminal repeats (ITRs) each of which comprises a D-sequence having (i) from 5 to 15 native nucleotides and (ii) one or more deletions or substitutions therein.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: February 18, 2003
    Assignees: Chiron Corporation, Advanced Research and Technology Institute
    Inventors: Arun Srivastava, Selvarangan Ponnazhagan, Robert H. Chloemer, Xu-Shan Wang, Mervin C. Yoder, Shang-Zhen Zhou, Jaime Escobedo, Varavani Dwarki
  • Publication number: 20020132336
    Abstract: The invention provides a method for producing purified replication-defective recombinant AAV virions. The method comprises introducing into a suitable host cell an AAV vector, an AAV helper construct and an adenoplasmid accessory construct into the host cell. The adenoplasmid accessory plasmid is composed adenovirus plasmid DNA unable to be packaged into adenoviral particles because it lacks packaging signal sequence(s) or it contains additional sequences making it too large to package. The host cell is cultured to produce crude rAAV virions and then lysed. The resulting cell lysate is applied to a chromatographic column containing sulfonated cellulose or subjected to cesium chloride equilibrium gradient centrifugation and the purified rAAV virions are recovered.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 19, 2002
    Applicant: Chiron Corporation
    Inventors: Varavani Dwarki, Martha Baillie Ladner, Jaime Escobedo, Shang-Zhen Zhou
  • Publication number: 20010051611
    Abstract: Provided are methods for selectively expressing therapeutic molecules, such as secretory proteins, antisense molecules and ribozymes, in the liver. The methods find use in treating hepatic diseases or conditions. The methods also find use in treating any disease or condition in which systemic administration of the therapeutic substance, for example, a secretory protein, is desired. The methods involve administering to a mammalian patient having a need for liver expression of a therapeutic molecule an AAV vector containing a therapeutically effective amount of the therapeutic molecule. Also provided are novel vectors employable in these methods.
    Type: Application
    Filed: July 24, 2001
    Publication date: December 13, 2001
    Applicant: Chiron Corporation.
    Inventors: Arun Srivastava, Selvarangan Ponnazhagan, Robert H. Schloemer, Xu-Shan Wang, Mervin C. Yoder, Shang-Zhen Zhou, Jaime Escobedo, Varavani Dwarki
  • Publication number: 20010034054
    Abstract: The invention provides a method for producing purified replication-defective recombinant AAV virions. The method comprises introducing into a suitable host cell an AAV vector, an AAV helper construct and an adenoplasmid accessory construct into the host cell. The adenoplasmid accessory plasmid is composed adenovirus plasmid DNA unable to be packaged into adenoviral particles because it lacks packaging signal sequence(s) or it contains additional sequences making it too large to package. The host cell is cultured to produce crude rAAV virions and then lysed. The resulting cell lysate is applied to a chromatographic column containing sulfonated cellulose or subjected to cesium chloride equilibrium gradient centrifugation and the purified rAAV virions are recovered.
    Type: Application
    Filed: April 24, 2001
    Publication date: October 25, 2001
    Inventors: Varavani Dwarki, Martha Baillie Ladner, Jaime Escobedo, Shang-Zhen Zhou
  • Patent number: 6221646
    Abstract: The invention provides a method for producing purified replication-defective recombinant AAV virions. The method comprises introducing into a suitable host cell an AAV vector, an AAV helper construct and an adenoplasmid accessory construct into the host cell. The adenoplasmid accessory plasmid is composed adenovirus plasmid DNA unable to be packaged into adenoviral particles because it lacks packaging signal sequence(s) or it contains additional sequences making it too large to package. The host cell is cultured to produce crude rAAV virions and then lysed. The resulting cell lysate is applied to a chromatographic column containing sulfonated cellulose or subjected to cesium chloride equilibrium gradient centrifugation and the purified rAAV virions are recovered.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: April 24, 2001
    Assignee: Chiron Corporation
    Inventors: Varavani Dwarki, Martha Baillie Ladner, Jaime Escobedo, Shang-Zhen Zhou