Patents by Inventor Ene Ustav

Ene Ustav 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: 11000529
    Abstract: Methods for treating high risk HPV infection by inhibiting one or more phases of HPV replication cycle with antiviral compounds are disclosed. Moreover, a mechanism for the inhibition is suggested and targets for further antiviral compounds are disclosed.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 11, 2021
    Assignee: Icosagen Cell Factory OÜ
    Inventors: Mart Ustav, Sr., Ene Ustav, Andres Männik, Mart Toots, Andres Tover
  • Patent number: 10954545
    Abstract: A U2OS-based model system using luciferase reporters to monitor the genome replication of alpha and beta HPVs is provided. A modified U2OS cell line is disclosed that expresses Firefly luciferase to measure toxicity of the screened compounds. In addition, provided are HPV18, HPV 16 and HPV5 marker genomes that express Renilla luciferase under the control of viral promoters used to measure changes in the viral copy number. This ready-to-use model system is capable of being used in high-throughput screens to identify compounds inhibiting initial amplification and stable maintenance as well as vegetative phase of various HPV subtypes.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: March 23, 2021
    Assignee: Icosagen Cell Factory OÜ
    Inventors: Mart Ustav, Ene Ustav, Andres Männik, Mart Toots, Mart Ustav, Jr., Andres Tover
  • Publication number: 20200046730
    Abstract: Methods for treating high risk HPV infection by inhibiting one or more phases of HPV replication cycle with antiviral compounds are disclosed. Moreover, a mechanism for the inhibition is suggested and targets for further antiviral compounds are disclosed.
    Type: Application
    Filed: September 12, 2019
    Publication date: February 13, 2020
    Applicant: Icosagen Cell Factory OÜ
    Inventors: Mart USTAV, SR., Ene USTAV, Andres MÄNNIK, Mart TOOTS, Andres TOVER
  • Patent number: 10543218
    Abstract: Novel antiviral compounds for inhibiting one or more phases of HPV replication cycle are disclosed. Moreover, a mechanism for the inhibition is suggested and targets for further antiviral compounds are disclosed.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: January 28, 2020
    Assignee: Icosagen Cell Factory OÜ
    Inventors: Mart Ustav, Sr., Ene Ustav, Andres Männik, Mart Toots, Andres Tover
  • Publication number: 20180155756
    Abstract: A U2OS-based model system using luciferase reporters to monitor the genome replication of alpha and beta HPVs is provided. A modified U2OS cell line is disclosed that expresses Firefly luciferase to measure toxicity of the screened compounds. In addition, provided are HPV18, HPV 16 and HPV5 marker genomes that express Renilla luciferase under the control of viral promoters used to measure changes in the viral copy number. This ready-to-use model system is capable of being used in high-throughput screens to identify compounds inhibiting initial amplification and stable maintenance as well as vegetative phase of various HPV subtypes.
    Type: Application
    Filed: April 11, 2016
    Publication date: June 7, 2018
    Applicant: Icosagen Cell Factory OÜ
    Inventors: Mart USTAV, Ene USTAV, Andres MÄNNIK, Mart TOOTS, Mart USTAV, JR., Andres TOVER
  • Publication number: 20180133228
    Abstract: Novel antiviral compounds for inhibiting one or more phases of HPV replication cycle are disclosed. Moreover, a mechanism for the inhibition is suggested and targets for further antiviral compounds are disclosed.
    Type: Application
    Filed: May 11, 2016
    Publication date: May 17, 2018
    Applicant: Icosagen Cell Factory OÜ
    Inventors: Mart Ustav, Sr., Ene Ustav, Andres Männik, Mart Toots, Andres Tover
  • Patent number: 9725486
    Abstract: A method for treating an HIV disease in a subject in need of said treatment, comprising administering to the subject a therapeutically effective amount of a DNA vaccine comprising an expression vector and a pharmaceutically acceptable excipient, where the expression vector comprises: (a) a heterologous promoter operatively linked to a DNA sequence encoding a nuclear-anchoring protein, where the nuclear-anchoring protein comprises: (i) a DNA binding domain which binds to a specific DNA binding sequence, and (ii) a functional domain of the Bovine Papilloma Virus Type 1 E2 protein, where the functional domain binds to a nuclear component; (b) a multimerized DNA sequence that forms a binding site for the nuclear anchoring protein; and (c) at least one expression cassette comprising a DNA sequence encoding a protein or peptide that stimulates an immune response specific to the protein or peptide; where the expression vector lacks an origin of replication functional in mammalian cells.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: August 8, 2017
    Assignee: Fit Biotech OY
    Inventors: Kai Krohn, Vesna Blazevic, Marja Tähtinen, Mart Ustav, Urve Toots, Andres Männik, Annamari Ranki, Ene Ustav
  • Publication number: 20140234361
    Abstract: A method for treating an HIV disease in a subject in need of said treatment, comprising administering to the subject a therapeutically effective amount of a DNA vaccine comprising an expression vector and a pharmaceutically acceptable excipient, where the expression vector comprises: (a) a heterologous promoter operatively linked to a DNA sequence encoding a nuclear-anchoring protein, where the nuclear-anchoring protein comprises: (i) a DNA binding domain which binds to a specific DNA binding sequence, and (ii) a functional domain of the Bovine Papilloma Virus Type 1 E2 protein, where the functional domain binds to a nuclear component; (b) a multimerized DNA sequence that forms a binding site for the nuclear anchoring protein; and (c) at least one expression cassette comprising a DNA sequence encoding a protein or peptide that stimulates an immune response specific to the protein or peptide; where the expression vector lacks an origin of replication functional in mammalian cells.
    Type: Application
    Filed: January 13, 2014
    Publication date: August 21, 2014
    Applicant: FIT Biotech Oy
    Inventors: Kai KROHN, Vesna Blazevic, Marja Tähtinen, Mart Ustav, Urve Toots, Andres Männik, Annamari Ranki, Ene Ustav
  • Publication number: 20130236958
    Abstract: This disclosure shows that the EBV FR-element comprised of EBNA1 multimeric binding sites can provide the stable maintenance replication function to the mouse polyomavirus (PyV) core origin plasmids in the presence of BPV-1 E2 protein and PyV large T-antigen (LT).
    Type: Application
    Filed: January 23, 2013
    Publication date: September 12, 2013
    Applicant: ICOSAGEN CELL FACTORY OU
    Inventors: Toomas SILLA, Ingrid TAGEN, Jelizaveta GEIMANEN, Kadri JANIKSON, Aare ABROI, Ene USTAV, Mart USTAV, Tiiu MANDEL, Urve TOOTS, Andres TOVER, Anne KALLING, Radi TEGOVA
  • Patent number: 8377653
    Abstract: This disclosure shows that the EBV FR-element comprised of EBNA1 multimeric binding sites can provide the stable maintenance replication function to the mouse polyomavirus (PyV) core origin plasmids in the presence of BPV-1 E2 protein and PyV large T-antigen (LT).
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: February 19, 2013
    Assignee: Icosagen Cell Factory Oü
    Inventors: Toomas Silla, Ingrid Tagen, Anne Kalling, Radi Tegova, Mart Ustav, Tiiu Mandel, Urve Toots, Andres Tover, Aare Abroi, Ene Ustav, Jelizaveta Geimanen, Kadri Janikson
  • Publication number: 20110076760
    Abstract: This disclosure shows that the EBV FR-element comprised of EBNA1 multimeric binding sites can provide the stable maintenance replication function to the mouse polyomavirus (PyV) core origin plasmids in the presence of BPV-1 E2 protein and PyV large T-antigen (LT).
    Type: Application
    Filed: July 7, 2010
    Publication date: March 31, 2011
    Applicant: Icosagen S.A.
    Inventors: Toomas Silla, Ingrid Tagen, Anne Kalling, Radi Tegova, Mart Ustav, Tiiu Mandel, Urve Toots, Andres Tover, Aare Abroi, Ene Ustav, Jelizaveta Geimanen, Kadri Janikson
  • Publication number: 20100279416
    Abstract: The invention relates to a method for introducing changes into a eukaryotic genome in vivo wherein the HPV genome, which comprises HPV replication origin sequence, is used together with HPV early proteins in order to achieve DNA replication in vivo. There is also disclosed a kit for in vivo amplification, excision, translocation and/or inversion of a DNA sequence, which comprises a vector carrying HPV genome or a part of HPV genome including HPV replication origin sequence, and expression vector or vectors encoding HPV early proteins.
    Type: Application
    Filed: March 27, 2008
    Publication date: November 4, 2010
    Inventors: Mart Ustav, Ene Ustav, Meelis Kadaja, Alina Sumerina
  • Patent number: 7790446
    Abstract: This disclosure shows that the BPV-1 E2 protein-dependent minichromosome maintenance element (MME) comprised of E2 multimeric binding sites can provide the stable maintenance replication function to the mouse polyomavirus (PyV) core origin plasmids in the presence of BPV-1 E2 protein and PyV large T-antigen (LT). MME dependent plasmids are lost with the frequency of 6% per generation. Significantly long stable maintenance replication can also be provided without selection pressure. We also demonstrate that PyV core origin maintenance function/replication activation could be provided by Epstein-Barr virus Family of repeats and EBNA1 protein. The maintenance of the Polyomavirus core origin plasmid was characterized by 13% loss of the plasmid during one cell generation in the case of EBV FR harboring plasmids.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: September 7, 2010
    Assignee: Kosagen Cell Factory Oü
    Inventors: Toomas Silla, Ingrid Tagen, Jelizaveta Geimanen, Kadri Janikson, Aare Abroi, Ene Ustav, Mart Ustav, Tiiu Mandel
  • Publication number: 20090252707
    Abstract: A method for treating an HIV disease in a subject in need of said treatment, comprising administering to the subject a therapeutically effective amount of a DNA vaccine comprising an expression vector and a pharmaceutically acceptable excipient, where the expression vector comprises: (a) a heterologous promoter operatively linked to a DNA sequence encoding a nuclear-anchoring protein, where the nuclear-anchoring protein comprises: (i) a DNA binding domain which binds to a specific DNA binding sequence, and (ii) a functional domain of the Bovine Papilloma Virus Type 1 E2 protein, where the functional domain binds to a nuclear component; (b) a multimerized DNA sequence that forms a binding site for the nuclear anchoring protein; and (c) at least one expression cassette comprising a DNA sequence encoding a protein or peptide that stimulates an immune response specific to the protein or peptide; where the expression vector lacks an origin of replication functional in mammalian cells.
    Type: Application
    Filed: January 27, 2009
    Publication date: October 8, 2009
    Applicant: FIT BIOTECH OY
    Inventors: KAI KROHN, VESNA BLAZEVIC, MARJA TAHTINEN, MART USTAV, URVE TOOTS, ANDRES MANNIK, ANNAMARI RANKI, ENE USTAV
  • Patent number: 7510718
    Abstract: The present invention relates to novel vectors, to DNA vaccines and gene therapeutics containing the vectors, to methods for the preparation of the vectors and DNA vaccines and gene therapeutics containing the vectors, and to therapeutic uses of the vectors. The novel vectors comprise (a) an expression cassette of a gene of a nuclear-anchoring protein, which contains (i) a DNA binding domain capable of binding to a specific DNA sequence and (ii) a functional domain capable of binding to a nuclear component and (b) a multimerized DNA sequence forming a binding site for the anchoring protein, and optionally (c) one or more expression cassettes of a DNA sequence of interest. The vectors lack a papilloma virus origin of replication.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: March 31, 2009
    Assignee: Fit Biotech Oyj PLC
    Inventors: Kai Krohn, Vesna Blazevic, Marja Tahtinen, Mart Ustav, Urve Toots, Andres Mannik, Annamari Ranki, Ene Ustav
  • Patent number: 7498314
    Abstract: The present invention relates to novel vectors, to DNA vaccines and gene therapeutics containing said vectors, to methods for the preparation of the vectors and DNA vaccines and gene therapeutics, and to therapeutic uses of said vectors. More specifically, the present invention relates to novel vectors comprising an expression cassette of a gene of a nuclear-anchoring protein, which contains a DNA binding domain capable of binding to a specific DNA sequence and a functional domain capable of binding to a nuclear component and a multimerized DNA sequence forming a binding site for the nuclear-anchoring protein, and optionally an expression cassette of a gene, genes or a DNA sequence or DNA sequences of interest. The present invention further relates to DNA vaccines and gene therapeutics containing the novel vectors, to methods for the preparation of the novel vectors and the DNA vaccines and gene therapeutics.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: March 3, 2009
    Assignee: Fit Biotech Oyj PLC
    Inventors: Kai Krohn, Vesna Blazevic, Marja Tähtinen, Mart Ustav, Urve Toots, Andres Männik, Annamari Ranki, Ene Ustav
  • Publication number: 20060183230
    Abstract: This disclosure shows that the BPV-1 E2 protein-dependent minichromosome maintenance element (MME) comprised of E2 multimeric binding sites can provide the stable maintenance replication function to the mouse polyomavirus (PyV) core origin plasmids in the presence of BPV-1 E2 protein and PyV large T-antigen (LT). MME dependent plasmids are lost with the frequency of 6% per generation. Significantly long stable maintenance replication can also be provided without selection pressure. We also demonstrate that PyV core origin maintenance function/replication activation could be provided by Epstein-Barr virus Family of repeats and EBNA1 protein. The maintenance of the Polyomavirus core origin plasmid was characterized by 13% loss of the plasmid during one cell generation in the case of EBV FR harboring plasmids.
    Type: Application
    Filed: February 10, 2006
    Publication date: August 17, 2006
    Inventors: Toomas Silla, Ingrid Tagen, Jelizaveta Geimanen, Kadri Janikson, Aare Abroi, Ene Ustav, Mart Ustav, Tiiu Mandel
  • Publication number: 20050026137
    Abstract: The present invention relates to novel vectors, to DNA vaccines and gene therapeutics containing said vectors, to methods for the preparation of the vectors and DNA vaccines and gene therapeutics containing the vectors, and to therapeutic uses of said vectors. More specifically, the present invention relates to novel vectors comprising (a) an expression cassette of a gene of a nuclear-anchoring protein, which contains (i) a DNA binding domain capable of binding to a specific DNA sequence and (ii) a functional domain capable of binding to a nuclear component and (b) a multimerized DNA sequence forming a binding site for the anchoring protein, and optionally (c) one or more expression cassettes of a DNA sequence of interest. In particular the invention relates to vectors that lack a papilloma virus origin of replication. The nuclear-anchoring protein might be the E2 protein of Bovine Papilloma Virus type 1 or Epstein-Barr Virus Nuclear Antigen 1.
    Type: Application
    Filed: May 3, 2002
    Publication date: February 3, 2005
    Inventors: Kai Krohn, Vesna Blazevic, Marja Tahtinen, Mart Ustav, Urve Toots, Andres Mannjk, Annamari Ranki, Ene Ustav
  • Publication number: 20030129169
    Abstract: The present invention relates to novel vectors, to DNA vaccines and gene therapeutics containing said vectors, to methods for the preparation of the vectors and DNA vaccines and gene therapeutics, and to therapeutic uses of said vectors. More specifically, the present invention relates to novel vectors comprising an expression cassette of a gene of a nuclear-anchoring protein, which contains a DNA binding domain capable of binding to a specific DNA sequence and a functional domain capable of binding to a nuclear component and a multimerized DNA sequence forming a binding site for the nuclear-anchoring protein, and optionally an expression cassette of a gene, genes or a DNA sequence or DNA sequences of interest. The present invention further relates to DNA vaccines and gene therapeutics containing the novel vectors, to methods for the preparation of the novel vectors and the DNA vaccines and gene therapeutics containing the novel vectors, and to the use the vectors in therapy.
    Type: Application
    Filed: May 3, 2002
    Publication date: July 10, 2003
    Inventors: Kai Krohn, Vesna Blazevic, Marja Tahtinen, Mart Ustav, Urve Toots, Andres Mannik, Annamari Ranki, Ene Ustav