Patents by Inventor Dmitri Simberg

Dmitri Simberg 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: 11642319
    Abstract: Methods for intravesical administration of a therapeutic agent including application of a photoactive nanogel to the mucosal surfaces of the bladder and/or intravesical application of cell-penetrating peptides. Photoactive nanogels may be aggregated by exposure to ultraviolet light, either in vitro or in vivo, to provide controlled or extended release of a therapeutic agent, such as an antibiotic.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 9, 2023
    Assignee: THE REGENTS OF THE UNIVERSITY OF COLORADO
    Inventors: Devatha P. Nair, Dmitri Simberg, Manju Saraswathy
  • Publication number: 20200179296
    Abstract: Click chemistry groups attached to both nanoparticles and antibodies to reduce antibody concentration in the body. The nanoparticles with attached click chemistry groups react with the antibody/biologic attached with a corresponding click chemistry group to sequester it in the liver and spleen, effectively and rapidly decreasing the concentration of free antibody/biologic.
    Type: Application
    Filed: December 4, 2019
    Publication date: June 11, 2020
    Inventor: Dmitri Simberg
  • Publication number: 20200030244
    Abstract: Methods for intravesical administration of a therapeutic agent including application of a photoactive nanogel to the mucosal surfaces of the bladder and/or intravesical application of cell-penetrating peptides. Photoactive nanogels may be aggregated by exposure to ultraviolet light, either in vitro or in vivo, to provide controlled or extended release of a therapeutic agent, such as an antibiotic.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 30, 2020
    Inventors: Devatha P. NAIR, Dmitri SIMBERG, Manju SARASWATHY
  • Patent number: 9730637
    Abstract: In alternative embodiments, the invention provides compositions such as devices, pills, beads, capsules, products of manufacture, particles, microparticles, nanoparticles, gels, liquid gels, liquid gel capsules, capsules, tablets, geltabs, liquids, sprays, emulsions, suspensions, pastes or yogurts, for the detection and isolation of biomarkers, nucleic acids, proteins or peptides, proteoglycans, lipids, fats, sugars or polysaccharides in the gastrointestinal tract for e.g., detecting the presence of particular exogenous or endogenous nucleic acids, e.g., DNA or RNA, or proteins, in the gastrointestinal tract, for example, to diagnose the presence of an infectious or exogenous agent such as a virus, a fungus, a parasite, a bacteria, intestinal helminths and protozoan parasites, and the like, or a biomarker such as a cancer-causing or cancer-predisposing allele, e.g., mutations of the KRAS2 oncogene in pancreatic cancer.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: August 15, 2017
    Assignee: The Regents of the University of California
    Inventors: Dmitri Simberg, Yu-Tsueng Liu
  • Patent number: 9101671
    Abstract: Disclosed are compositions and methods related to clot binding compounds. For example, disclosed are conjugates comprising a surface molecule and a plurality of clot binding compounds. The clot binding compounds can selectively bind to clotted plasma protein. The conjugate can, for example, cause clotting and amplify the accumulation of the conjugate in tumors. In one example, the conjugate can comprise a sufficient number and composition of clot binding compounds such that the conjugate causes clotting and amplifies the accumulation of the conjugate in tumors. The disclosed targeting is useful for treatment of cancer and other diseases and disorders.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: August 11, 2015
    Assignee: Sanford-Burnham Medical Research Institute
    Inventors: Erkki Ruoslahti, Dmitri Simberg
  • Publication number: 20140288398
    Abstract: In alternative embodiments, the invention provides compositions such as devices, pills, beads, capsules, products of manufacture, particles, microparticles, nanoparticles, gels, liquid gels, liquid gel capsules, capsules, tablets, geltabs, liquids, sprays, emulsions, suspensions, pastes or yogurts, for the detection and isolation of biomarkers, nucleic acids, proteins or peptides, proteoglycans, lipids, fats, sugars or polysaccharides in the gastrointestinal tract for e.g., detecting the presence of particular exogenous or endogenous nucleic acids, e.g., DNA or RNA, or proteins, in the gastrointestinal tract, for example, to diagnose the presence of an infectious or exogenous agent such as a virus, a fungus, a parasite, a bacteria, intestinal helminths and protozoan parasites, and the like, or a biomarker such as a cancer-causing or cancer-predisposing allele, e.g., mutations of the KRAS2 oncogene in pancreatic cancer.
    Type: Application
    Filed: August 17, 2012
    Publication date: September 25, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Dmitri Simberg, Yu-Tsueng Liu
  • Publication number: 20140046181
    Abstract: Techniques, systems, devices and materials are disclosed for implementing and fabricating drug delivery and imaging vehicles, which are activated in the body at a tissue of interest by focused ultrasound. In one aspect, a drug delivery vehicle can include a carrier having an outer membrane that envelopes an acoustic sensitizer particle and a payload substance to be delivered to the target tissue. The outer membrane can protect the acoustic sensitizer particle and the payload substance from degradation and opsonization. The outer membrane can be functionalized with a tumor targeting ligand to cause the drug delivery vehicle to selectively accumulate in a tumor region over other tissues, as well as with an agent to increase circulation time by reducing uptake from undesired body tissues, organs, and systems.
    Type: Application
    Filed: January 5, 2012
    Publication date: February 13, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael Benchimol, Sadik C. Esener, Dmitri Simberg, Stuart Ibsen
  • Publication number: 20130202625
    Abstract: The technology relates in part to methods of preventing and treating diseases and conditions associated with cancer, including methods, compositions, and kits used for preventing and treating cancer dissemination and growth.
    Type: Application
    Filed: January 20, 2011
    Publication date: August 8, 2013
    Applicant: The Regents Of The University of Californa
    Inventors: Dmitri Simberg, Guixin Shi
  • Patent number: 8242089
    Abstract: The present invention concerns the use of a sphingoid-polyalkylamine conjugate comprising a sphingoid backbone carrying, via a carbamoyl bond, at least one polyalkylamine chains as a capturing agent of nucleic acid molecules. The present invention also provides the use of the sphingoid polyalkylamine conjugate for the preparation of a pharmaceutical composition for the delivery of a nucleic acid molecule into a target cell. In a further aspect the invention provides a method for transfecting a nucleic acid into a target cell, the method comprises contacting said target cell with the sphingoid-polyalkylamine conjugate associated with a nucleic acid molecule, thereby transfecting said target cell with said nucleic acid molecule. Other aspects of the invention concern pharmaceutical compositions comprising said conjugate, therapeutic methods as well as kits, making use of the said conjugate. A preferred conjugate according to the invention is N-palmitoyl D-erythrosphingosyl-1-carbamoyl spermine.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: August 14, 2012
    Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventors: Yechezkel Barenholz, Dmitri Simberg
  • Publication number: 20100254914
    Abstract: The disclosure provides elongated nanostructures useful for biological imaging and measurement. More particularly the disclosure provides nanoworms having an increased bioavailability compared to nanospheres.
    Type: Application
    Filed: February 25, 2010
    Publication date: October 7, 2010
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ji-Ho Park, Lianglin Zhang, Austin M. Derfus, Michael J. Sailor, Geoffrey A. Von Maltzahn, Todd Harris, Sangeeta N. Bhatia, Dmitri Simberg
  • Patent number: 7771711
    Abstract: The present invention concerns novel sphingolipid-polyalkylamines conjugates, a process for their preparation and pharmaceutical compositions comprising the same. In particular, the present invention concerns ceramide based polyalkylamine conjugates and its use as a capturing agent. A preferred ceramide polyalkylamine conjugate is a ceramide-spermine conjugate, more preferably, N-palmitoyl D-erythro sphingosyl-1-carbamoyl spermine.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: August 10, 2010
    Assignees: Yissum Research Development Company of The Hebrew University of Jerusalem, Biolab Ltd.
    Inventors: Yechezkel Barenholz, Dmitri Simberg, Elimelech Rochlin
  • Publication number: 20080305101
    Abstract: Disclosed are compositions and methods related to clot binding compounds. The disclosed targeting is useful for treatment of cancer and other diseases and disorders.
    Type: Application
    Filed: December 31, 2007
    Publication date: December 11, 2008
    Inventors: Erkki Ruoslahti, Dmitri Simberg
  • Publication number: 20080112917
    Abstract: The present invention concerns novel sphingolipid-polyalkylamines conjugates, a process for their preparation and pharmaceutical compositions comprising the same. In particular, the present invention concerns ceramide based polyalkylamine conjugates and its use as a capturing agent. A preferred ceramide polyalkylamine conjugate is a ceramide-spermine conjugate, more preferably, N-palmitoyl D-erythro sphingosyl-1-carbamoyl spermine.
    Type: Application
    Filed: June 17, 2004
    Publication date: May 15, 2008
    Applicants: BIOLAB LTD., YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM
    Inventors: Yechezkel Barenholz, Dmitri Simberg, Elimelech Rochlin
  • Publication number: 20060252718
    Abstract: The present invention concerns the use of a sphingoid-polyalkylamine conjugate comprising a sphingoid backbone carrying, via a carbamoyl bond, at least one polyalkylamine chains as a capturing agent of nucleic acid molecules. The present invention also provides the use of the sphingoid polyalkylamine conjugate for the preparation of a pharmaceutical composition for the delivery of a nucleic acid molecule into a target cell. In a further aspect the invention provides a method for transfecting a nucleic acid into a target cell, the method comprises contacting said target cell with the sphingoid-polyalkylamine conjugate associated with a nucleic acid molecule, thereby transfecting said target cell with said nucleic acid molecule. Other aspects of the invention concern pharmaceutical compositions comprising said conjugate, therapeutic methods as well as kits, making use of the said conjugate. A preferred conjugate according to the invention is N-palmitoyl D-erythrosphingosyl-1-carbamoyl spermine.
    Type: Application
    Filed: June 17, 2004
    Publication date: November 9, 2006
    Applicant: Yissum Research Development Company of the Hebrew Univeristy of Jerusalem
    Inventors: Yechezkel Barenholz, Dmitri Simberg