Patents by Inventor Oscar Negrete

Oscar Negrete 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: 20240033362
    Abstract: A construct includes a core comprising an external surface and a plurality of pores, a cargo disposed in a pore of the plurality of pores, the cargo comprising a CRISPR Cas9 component or a nucleic acid sequence encoding a CRISPR Cas9 component; and a coating coupled to the core, wherein the coating comprises a cationic lipid, a pegylated lipid, a zwitterionic lipid, and a sterol. The coating may comprise a molar ratio of about 1 cationic lipid to 1 zwitterionic lipid to 0.9 sterol to 0.15 PEGylated lipid, wherein each molar ratio optionally varies by about plus or minus 10%. A method of treatment is also provided.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 1, 2024
    Inventors: Oscar Negrete, Annette Estelle LaBauve, Joseph S. Schoeniger, Edwin A. Saada
  • Publication number: 20230295616
    Abstract: The present invention relates to a CRISPR-Cas based system for targeting nucleic acid sequences. In part, the invention relates to synthetic guiding components for targeting single-stranded sequences, as well as design principles for constructing such components. Also described herein are methods of employing such components, e.g., to repress or activate a desired target within the subject.
    Type: Application
    Filed: March 29, 2023
    Publication date: September 21, 2023
    Inventors: Oscar Negrete, Jennifer A. Doudna, Steven C. Strutt
  • Patent number: 11661599
    Abstract: The present invention relates to a CRISPR-Cas based system for targeting nucleic acid sequences. In part, the invention relates to synthetic guiding components for targeting single-stranded sequences, as well as design principles for constructing such components. Also described herein are methods of employing such components, e.g., to repress or activate a desired target within the subject.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: May 30, 2023
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, The Regents of the University of California
    Inventors: Oscar Negrete, Jennifer A. Doudna, Steven C. Strutt
  • Patent number: 11564919
    Abstract: An in vitro assay was designed to measure the activity of the alphavirus non-structural protein 2 (nsP2), which is the viral protease and is required for viral replication. By taking advantage of fluorescence-resonance energy transfer between two proteins, a protease cleavage assay was generated. This was utilized for high-throughput screening of 40,000 small molecules. Inhibitors were validated using cell-based assays to measure alphavirus infection and cytotoxicity. Certain compounds were then characterized for anti-viral efficacy in various cell lines in numerous assays. Compounds were tested against Chikungunya virus, Venezuelan Equine Encephalitis virus, Rift Valley Fever virus, and Zika virus. Three compounds (compounds I, II, and III) showed pan-alphavirus anti-viral efficacy at concentrations that did not result in cell toxicity. An additional compound, structure IV, showed broad spectrum inhibition of all viruses tested.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: January 31, 2023
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Brooke Nicole Harmon, Oscar Negrete, Joseph S. Schoeniger, Edwin A. Saada
  • Patent number: 11433121
    Abstract: A construct includes a core comprising an external surface and a plurality of pores, a cargo disposed in a pore of the plurality of pores, the cargo comprising a CRISPR Cas9 component or a nucleic acid sequence encoding a CRISPR Cas9 component; and a coating coupled to the core, wherein the coating comprises a cationic lipid, a pegylated lipid, a zwitterionic lipid, and a sterol. The coating may comprise a molar ratio of about 1 cationic lipid to 1 zwitterionic lipid to 0.9 sterol to 0.15 PEGylated lipid, wherein each molar ratio optionally varies by about plus or minus 10%. A method of treatment is also provided.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: September 6, 2022
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Oscar Negrete, Annette Estelle LaBauve, Joseph S. Schoeniger, Edwin A. Saada
  • Publication number: 20210330809
    Abstract: The present invention relates to lipid-coated particles for treating viral infections, including viral encephalitis infections. In particular, an antiviral compound can be disposed within the lipid-coated particle, thereby providing an antiviral carrier. Methods of making and using such carriers are described herein.
    Type: Application
    Filed: May 3, 2021
    Publication date: October 28, 2021
    Inventors: Oscar Negrete, C. Jeffrey Brinker, Torri Rinker, Annette Estelle LaBauve
  • Patent number: 11045554
    Abstract: The present invention relates to lipid-coated particles for treating viral infections, including viral encephalitis infections. In particular, an antiviral compound can be disposed within the lipid-coated particle, thereby providing an antiviral carrier. Methods of making and using such carriers are described herein.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: June 29, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Oscar Negrete, C. Jeffrey Brinker, Torri Rinker, Annette Estelle LaBauve
  • Patent number: 10933027
    Abstract: The present invention relates to a construct including a porous core, a cargo, and a spacer disposed between the core and the cargo. In some examples, the construct further includes an outer layer composed of a lipid, a polymer, or a combination thereof. Methods of making and employing such constructs are also described herein.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 2, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Darryl Y. Sasaki, Oscar Negrete, Edwin A. Saada, Patrick F. Fleig, Scott Reed, Eric L. Qiao
  • Patent number: 10624949
    Abstract: The present invention relates to methods for treating a disease, in which the disease arises from dysregulation of the Wnt signaling pathway. In some instances, the disease can be treated by administering a Wnt pathway inhibitory compound. In other instances, the method optionally includes conducting a genome-wide screening to determine one or more genes resulting in a reduced disease state and then identifying the gene(s) as being involved in the Wnt signaling pathway.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: April 21, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Oscar A. Negrete, Brooke Nicole Harmon
  • Publication number: 20190262469
    Abstract: The present disclosure relates to protocells that are useful in the treatment and prevention of viral infections, including but not limited to infections caused by a Hendra virus and Nipah virus (NiV). The present disclosure relates to protocells that are useful in the treatment of bacterial infections, including antibiotic-resistant bacterial infections. The protocells are coated with a lipid bi- or multilayer comprising at least one moiety that targets a viral cellular receptor and at least one moiety that ruptures a virally-infected cell membrane. The present disclosure further relates to novel mesoporous metal oxide nanoparticles and related protocells that are useful in the treatment and/or prevention of a wide variety of disorders, including a cancer or a bacterial or viral infection. Such nanoparticles and protocells can be functionalized to allow for synergistic loading of a wide variety of active ingredients.
    Type: Application
    Filed: September 2, 2016
    Publication date: August 29, 2019
    Inventors: C. Jeffrey Brinker, Eric C. Carnes, Carlee Erin Ashley, Oscar Negrete, Dan C Wilkinson, Brian S Wilkinson, David Patrick Padilla
  • Publication number: 20180049984
    Abstract: The present disclosure relates to the delivery of polynucleotides and/or oligonucleotides using silica delivery platforms, e.g., silica carriers or protocells. In particular, in the present disclosure, polynucleotides in the form of plasmids expressing siRNA may be administered as cargo in the silica delivery platform to a patient or subject to inhibit and/or treat cancer in a patient. In one aspect, the silica delivery platform that have been charged with cargo comprising plasmid DNA (in particular, CRISPR ds plasmid DNA) which expresses siRNA, shRNA, mRNA and other RNA which may be used to administer these plasmids to patients in order to effect inhibition of cancer cells (especially including apoptosis of those cancer cells) and effective and/or prophylaxis of cancer, as well as numerous pathogens, including viruses, bacteria, fungi, and/or other disease states and/or conditions. In another aspect, the silica delivery platform comprises a biological package (e.g.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 22, 2018
    Inventors: Charles Jeffrey Brinker, Eric C. Carnes, Carlee Erin Ashley, Joshua Santarpia, Adrienne Celeste Greene, Oscar Negrete, Steven Branda, Ayse Muniz, Jacob Ongundi Agola, Kimberly Butler
  • Publication number: 20180028686
    Abstract: The present disclosure relates to the delivery of polynucleotides and/or oligonucleotides using silica delivery platforms, e.g., silica carriers or protocells. In particular, in the present disclosure, polynucleotides in the form of plasmids expressing siRNA may be administered as cargo in the silica delivery platform to a patient or subject to inhibit and/or treat cancer in a patient. In one aspect, the silica delivery platform that have been charged with cargo comprising plasmid DNA (in particular, CRISPR ds plasmid DNA) which expresses siRNA, shRNA, mRNA and other RNA which may be used to administer these plasmids to patients in order to effect inhibition of cancer cells (especially including apoptosis of those cancer cells) and effective and/or prophylaxis of cancer, as well as numerous pathogens, including viruses, bacteria, fungi, and/or other disease states and/or conditions. In another aspect, the silica delivery platform comprises a biological package (e.g.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 1, 2018
    Inventors: Charles Jeffrey Brinker, Eric C. Carnes, Carlee Erin Ashley, Joshua Santarpia, Adrienne Celeste Greene, Oscar Negrete, Steven Branda, Ayse Muniz, Jacob Ongundi Agola, Kimberly Butler
  • Publication number: 20170232115
    Abstract: The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g.
    Type: Application
    Filed: December 15, 2016
    Publication date: August 17, 2017
    Inventors: Carlee Erin Ashley, C. Jeffrey Brinker, Eric C. Carnes, Mohammed Houman Fekrazad, Linda A. Felton, Oscar Negrete, David Patrick Padilla, Brian S. Wilkinson, Dan C. Wilkinson, Cheryl L. Willman
  • Patent number: 9549976
    Abstract: The invention relates to virus-like particles of bacteriophage MS2 (MS2 VLPs) displaying peptide epitopes or peptide mimics of epitopes of Nipah Virus envelope glycoprotein that elicit an immune response against Nipah Virus upon vaccination of humans or animals. Affinity selection on Nipah Virus-neutralizing monoclonal antibodies using random sequence peptide libraries on MS2 VLPs selected peptides with sequence similarity to peptide sequences found within the envelope glycoprotein of Nipah itself, thus identifying the epitopes the antibodies recognize. The selected peptide sequences themselves are not necessarily identical in all respects to a sequence within Nipah Virus glycoprotein, and therefore may be referred to as epitope mimics VLPs displaying these epitope mimics can serve as vaccine. On the other hand, display of the corresponding wild-type sequence derived from Nipah Virus and corresponding to the epitope mapped by affinity selection, may also be used as a vaccine.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: January 24, 2017
    Assignees: STC.UNM, SANDIA CORPORATION
    Inventors: David S. Peabody, Bryce Chackerian, Carlee Ashley, Eric Carnes, Oscar Negrete
  • Publication number: 20150272885
    Abstract: The present invention is directed to protocells for specific targeting of hepatocellular and other cancer cells which comprise a nanoporous silica core with a supported lipid bilayer; at least one agent which facilitates cancer cell death (such as a traditional small molecule, a macromolecular cargo (e.g.
    Type: Application
    Filed: October 12, 2012
    Publication date: October 1, 2015
    Inventors: Carlee Erin Ashley, C. Jeffrey Brinker, Eric C. Carnes, Mohammad Houman Fekrazad, Linda A. Felton, Oscar Negrete, David Patrick Padilla, Brian S. Wilkinson, Dan C. Wilkinson, Cheryl L. Willman
  • Patent number: 8828736
    Abstract: We have developed an microelectroporation device that combines microarrays of oligonucleotides, microfluidic channels, and electroporation for cell transfection and high-throughput screening applications (e.g. RNA interference screens). Microarrays allow the deposition of thousands of different oligonucleotides in microscopic spots. Microfluidic channels and microwells enable efficient loading of cells into the device and prevent cross-contamination between different oligonucleotides spots. Electroporation allows optimal transfection of nucleic acids into cells (especially hard-to-transfect cells such as primary cells) by minimizing cell death while maximizing transfection efficiency. This invention has the advantage of a higher throughput and lower cost, while preventing cross-contamination compared to conventional screening technologies. Moreover, this device does not require bulky robotic liquid handling equipment and is inherently safer given that it is a closed system.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 9, 2014
    Assignee: Sandia Corporation
    Inventors: Thomas D. Perroud, Ronald F. Renzi, Oscar Negrete, Mark R. Claudnic
  • Publication number: 20120004144
    Abstract: We have developed an microelectroporation device that combines microarrays of oligonucleotides, microfluidic channels, and electroporation for cell transfection and high-throughput screening applications (e.g. RNA interference screens). Microarrays allow the deposition of thousands of different oligonucleotides in microscopic spots. Microfluidic channels and microwells enable efficient loading of cells into the device and prevent cross-contamination between different oligonucleotides spots. Electroporation allows optimal transfection of nucleic acids into cells (especially hard-to-transfect cells such as primary cells) by minimizing cell death while maximizing transfection efficiency. This invention has the advantage of a higher throughput and lower cost, while preventing cross-contamination compared to conventional screening technologies. Moreover, this device does not require bulky robotic liquid handling equipment and is inherently safer given that it is a closed system.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Inventors: Thomas D. Perroud, Ronald F. Renzi, Oscar Negrete, Mark R. Claudnic