Patents by Inventor Venigalla B. RAO

Venigalla B. RAO 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: 9850288
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 26, 2017
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Wadad Alsalmi
  • Patent number: 9834583
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 5, 2017
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Wadad Alsalmi
  • Patent number: 9701722
    Abstract: Described herein is a soluble HIV-1 retrovirus transmembrane glycoprotein gp41 trimer (Soc-gp41M-Fd) containing a partial ectodomain and the cytoplasmic domain, that is fused to the small outer capsid (Soc) protein of bacteriophage T4 and the Foldon domain of the bacteriophage T4 fibritin (Fd). The gp41 trimer that has a prehairpin structure could be utilized to understand the mechanism of viral entry and as a candidate for development of HIV-1 vaccines, diagnostics and therapeutics. Other secondary embodiments of the gp41 proteins containing different modifications are also disclosed. According to one embodiment, the gp41 trimer is further attached to a cell penetration peptide (CPP). Methods of producing gp41 trimers are also disclosed.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: July 11, 2017
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Guofen Gao
  • Patent number: 9580477
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: February 28, 2017
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Wadad Alsalmi
  • Patent number: 9523101
    Abstract: Complex viruses are assembled from simple protein subunits by sequential and irreversible assembly. During genome packaging in bacteriophages, a powerful molecular motor assembles at the special portal vertex of an empty prohead to initiate packaging. An aspect of the invention relates to the phage T4 packaging machine being highly promiscuous, translocating DNA into finished phage heads as well as into proheads. Single motors can force exogenous DNA into phage heads at the same rate as into proheads and phage heads undergo repeated initiations, packaging multiple DNA molecules into the same head. This shows that the phage DNA packaging machine has unusual conformational plasticity, powering DNA into an apparently passive capsid receptacle, including the highly stable virus shell, until it is full. These features allow for the design of a novel class of nanocapsid delivery vehicles.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: December 20, 2016
    Assignee: The Catholic University of America
    Inventor: Venigalla B. Rao
  • Publication number: 20160272685
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 22, 2016
    Inventors: Venigalla B. RAO, Wadad ALSALMI
  • Publication number: 20160272686
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 22, 2016
    Inventors: Venigalla B. RAO, Wadad ALSALMI
  • Publication number: 20160272947
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 22, 2016
    Inventors: Venigalla B. RAO, Wadad ALSALMI
  • Publication number: 20160272684
    Abstract: An approach of producing recombinant trimers that mimic native HIV-1 envelope trimers is developed. A recombinant protein forming the recombinant trimers encompasses a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140. The linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix. After expressed in a cell, the recombinant protein is secreted into the culture medium and assembles into recombinant trimers therein. The recombinant trimers may be directly purified from the culture medium. Cleaved and uncleaved trimers from different clade viruses are produced.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 22, 2016
    Inventors: Venigalla B. RAO, Wadad ALSALMI
  • Publication number: 20160271243
    Abstract: Provided herein are HIV vaccines that encompasses recombinant trimers that mimic native HIV-1 envelope trimers. Also provided are methods of administering to a subject in need thereof an HIV vaccine provided herein to elicit antibodies against a recombinant trimer in the subject. A recombinant trimer is formed by a recombinant protein comprising a recombinant HIV-1 gp140 fused to a tag through a linker at C-terminus of the recombinant HIV-1 gp140, wherein the linker is sufficiently long so that the tag is accessible for binding by a binding molecule bound on a solid matrix during purification of the recombinant trimer.
    Type: Application
    Filed: July 23, 2015
    Publication date: September 22, 2016
    Inventors: Venigalla B. RAO, Wadad ALSALMI
  • Publication number: 20160207964
    Abstract: Described herein is a soluble HIV-1 retrovirus transmembrane glycoprotein gp41 trimer (Soc-gp41M-Fd) containing a partial ectodomain and the cytoplasmic domain, that is fused to the small outer capsid (Soc) protein of bacteriophage T4 and the Foldon domain of the bacteriophage T4 fibritin (Fd). The gp41 trimer that has a prehairpin structure could be utilized to understand the mechanism of viral entry and as a candidate for development of HIV-1 vaccines, diagnostics and therapeutics. Other secondary embodiments of the gp41 proteins containing different modifications are also disclosed. According to one embodiment, the gp41 trimer is further attached to a cell penetration peptide (CPP). Methods of producing gp41 trimers are also disclosed.
    Type: Application
    Filed: March 25, 2016
    Publication date: July 21, 2016
    Inventors: Venigalla B. RAO, Guofen GAO
  • Patent number: 9365867
    Abstract: Complex viruses are assembled from simple protein subunits by sequential and irreversible assembly. During genome packaging in bacteriophages, a powerful molecular motor assembles at the special portal vertex of an empty prohead to initiate packaging. An aspect of the invention relates to the phage T4 packaging machine being highly promiscuous, translocating DNA into finished phage heads as well as into proheads. Single motors can force exogenous DNA into phage heads at the same rate as into proheads and phage heads undergo repeated initiations, packaging multiple DNA molecules into the same head. This shows that the phage DNA packaging machine has unusual conformational plasticity, powering DNA into an apparently passive capsid receptacle, including the highly stable virus shell, until it is full. These features allow for the design of a novel class of nanocapsid delivery vehicles.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: June 14, 2016
    Assignee: The Catholic University of America
    Inventor: Venigalla B. Rao
  • Patent number: 9328145
    Abstract: Described herein is a soluble HIV-1 retrovirus transmembrane glycoprotein gp41 trimer (Soc-gp41M-Fd) containing a partial ectodomain and the cytoplasmic domain, that is fused to the small outer capsid (Soc) protein of bacteriophage T4 and the Foldon domain of the bacteriophage T4 fibritin (Fd). The gp41 trimer that has a prehairpin structure could be utilized to understand the mechanism of viral entry and as a candidate for development of HIV-1 vaccines, diagnostics and therapeutics. Other secondary embodiments of the gp41 proteins containing different modifications are also disclosed. According to one embodiment, the gp41 trimer is further attached to a cell penetration peptide (CPP). Methods of producing gp41 trimers are also disclosed.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: May 3, 2016
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Guofen Gao
  • Patent number: 9328149
    Abstract: Techniques from two basic approaches, structure-based immunogen design and phage T4 nanoparticle delivery, are developed to construct new plague vaccines. The NH2-terminal ?-strand of F1 of Yersinia pestis is transplanted to the COOH-terminus of F1 of Yersinia pestis and the NH2-terminus sequence flanking the ?-strand of F1 of Yersinia pestis is duplicated to eliminate polymerization but to retain the T cell epitopes. The mutated F1 is fused to the V antigen of Yersinia pestis to thereby form a fusion protein F1mut-V mutant, which produces a completely soluble monomer. The fusion protein F1mut-V is then arrayed on phage T4 nanoparticles via a small outer capsid protein, Soc, from a T4 phage or a T4-related phage. Both the soluble and T4 decorated F1mut-V provided approximately 100% protection to mice and rats against pneumonic plague evoked by high doses of Yersinia pestis CO92.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: May 3, 2016
    Assignee: The Catholic University of America
    Inventors: Venigalla B. Rao, Pan Tao
  • Patent number: 9187765
    Abstract: Described is T4 DNA packaging machine comprising: one or more DNA molecules packaged in a head of the T4 DNA packaging machine, one or more Hoc-fused proteins displayed on the head of the T4 DNA packaging machine, and one or more Soc-fused proteins displayed on the head of the T4 DNA packaging machine. Also described are methods of making and using such a T4 DNA packaging machine.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: November 17, 2015
    Assignee: The Catholic University of America
    Inventor: Venigalla B. Rao
  • Patent number: 9163262
    Abstract: Described is T4 DNA packaging machine comprising: one or more DNA molecules packaged in a head of the T4 DNA packaging machine, one or more Hoc-fused proteins displayed on the head of the T4 DNA packaging machine, and one or more Soc-fused proteins displayed on the head of the T4 DNA packaging machine. Also described are methods of making and using such a T4 DNA packaging machine.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: October 20, 2015
    Assignee: The Catholic University of America
    Inventor: Venigalla B. Rao
  • Publication number: 20150017198
    Abstract: Techniques from two basic approaches, structure-based immunogen design and phage T4 nanoparticle delivery, are developed to construct new plague vaccines. The NH2-terminal ?-strand of F1 of Yersinia pestis is transplanted to the COOH-terminus of F1 of Yersinia pestis and the NH2-terminus sequence flanking the ?-strand of F1 of Yersinia pestis is duplicated to eliminate polymerization but to retain the T cell epitopes. The mutated F1 is fused to the V antigen of Yersinia pestis to thereby form a fusion protein F1mut-V mutant, which produces a completely soluble monomer. The fusion protein F1mut-V is then arrayed on phage T4 nanoparticles via a small outer capsid protein, Soc, from a T4 phage or a T4-related phage. Both the soluble and T4 decorated F1mut-V provided approximately 100% protection to mice and rats against pneumonic plague evoked by high doses of Yersinia pestis CO92.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 15, 2015
    Inventors: Venigalla B. RAO, Pan Tao
  • Publication number: 20140335158
    Abstract: Complex viruses are assembled from simple protein subunits by sequential and irreversible assembly. During genome packaging in bacteriophages, a powerful molecular motor assembles at the special portal vertex of an empty prohead to initiate packaging. An aspect of the invention relates to the phage T4 packaging machine being highly promiscuous, translocating DNA into finished phage heads as well as into proheads. Single motors can force exogenous DNA into phage heads at the same rate as into proheads and phage heads undergo repeated initiations, packaging multiple DNA molecules into the same head. This shows that the phage DNA packaging machine has unusual conformational plasticity, powering DNA into an apparently passive capsid receptacle, including the highly stable virus shell, until it is full. These features allow for the design of a novel class of nanocapsid delivery vehicles.
    Type: Application
    Filed: July 2, 2014
    Publication date: November 13, 2014
    Inventor: Venigalla B. Rao
  • Publication number: 20140329891
    Abstract: Described is T4 DNA packaging machine comprising: one or more DNA molecules packaged in a head of the T4 DNA packaging machine, one or more Hoc-fused proteins displayed on the head of the T4 DNA packaging machine, and one or more Soc-fused proteins displayed on the head of the T4 DNA packaging machine. Also described are methods of making and using such a T4 DNA packaging machine.
    Type: Application
    Filed: July 22, 2014
    Publication date: November 6, 2014
    Inventor: Venigalla B. RAO
  • Publication number: 20140256796
    Abstract: Described is T4 DNA packaging machine comprising: one or more DNA molecules packaged in a head of the T4 DNA packaging machine, one or more Hoc-fused proteins displayed on the head of the T4 DNA packaging machine, and one or more Soc-fused proteins displayed on the head of the T4 DNA packaging machine. Also described are methods of making and using such a T4 DNA packaging machine.
    Type: Application
    Filed: December 4, 2013
    Publication date: September 11, 2014
    Applicant: THE CATHOLIC UNIVERSITY OF AMERICA
    Inventor: Venigalla B. RAO