Patents Assigned to Da Volterra
  • Patent number: 11365403
    Abstract: The present invention relates to an isolated polypeptide having beta-lactamase activity and nucleic acid sequences encoding the polypeptide. The isolated polypeptide of the invention is a VIM-2 variant with improved properties such as improved protease stability, stability in intestinal medium, improved activity against one or more antibiotics, improved specific activity and/or improved production in a host cell.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: June 21, 2022
    Assignees: Da Volterra, Bioaster
    Inventors: Jean De Gunzburg, Jean-Denis Docquier
  • Publication number: 20220087945
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Application
    Filed: November 11, 2021
    Publication date: March 24, 2022
    Applicant: Da Volterra
    Inventors: Francois LESCURE, Jean DE GUNZBURG
  • Patent number: 11202761
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: December 21, 2021
    Assignee: DA VOLTERRA
    Inventors: Francois Lescure, Jean De Gunzburg
  • Patent number: 10988749
    Abstract: The present invention relates to an isolated polypeptide having beta-lactamase activity and nucleic acid sequences encoding the polypeptide. The isolated polypeptide of the invention is a VIM-2 variant with improved properties such as improved protease stability.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: April 27, 2021
    Assignees: DA VOLTERRA, BIOASTER
    Inventors: Jean De Gunzburg, Jean-Denis Docquier
  • Patent number: 10982205
    Abstract: The present invention relates to an isolated polypeptide having beta-lactamase activity and nucleic acid sequences encoding the polypeptide. The isolated polypeptide of the invention is a Verona integron-encoded metallo-?-lactamase (VIM-2) variant with improved properties such as improved protease stability, stability in intestinal medium, improved activity against one or more antibiotics, improved specific activity and/or improved production in a host cell.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: April 20, 2021
    Assignees: DA VOLTERRA, BIOASTER
    Inventors: Jean De Gunzburg, Jean-Denis Docquier
  • Publication number: 20190048331
    Abstract: The present invention relates to an isolated polypeptide having beta-lactamase activity and nucleic acid sequences encoding the polypeptide. The isolated polypeptide of the invention is a VIM-2 variant with improved properties such as improved protease stability.
    Type: Application
    Filed: February 22, 2017
    Publication date: February 14, 2019
    Applicants: DA VOLTERRA, BIOASTER
    Inventors: Jean DE GUNZBURG, Jean-Denis DOCQUIER
  • Publication number: 20180369156
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Application
    Filed: July 26, 2018
    Publication date: December 27, 2018
    Applicant: Da Volterra
    Inventors: Francois LESCURE, Jean DE GUNZBURG
  • Patent number: 10052288
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 21, 2018
    Assignee: DA VOLTERRA
    Inventors: Francois Lescure, Jean De Gunzburg
  • Patent number: 9968562
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 15, 2018
    Assignee: DA VOLTERRA
    Inventors: Francois Lescure, Jean De Gunzburg
  • Publication number: 20130323217
    Abstract: The present invention relates to a method for the controlled repopulation of the colonic bacterial flora.
    Type: Application
    Filed: December 22, 2011
    Publication date: December 5, 2013
    Applicants: Da Volterra, ASSISTANCE PUBLIQUE - HOPITAUX DE PARIS, Universite Paris Diderot-Paris 7
    Inventors: Antoine Andremont, Jean De Gunzburg
  • Publication number: 20130236944
    Abstract: The invention relates to methods for inactivating antibiotics in the environment. The invention further relates to the use of a laccase, a lipase or a cellulase for inactivation of antibiotics. It also relates to compositions to decontaminate the polluted environment and to prevent the pollution of the environment by inactivating antibiotics from waste and wastewater effluents before they reach the environment.
    Type: Application
    Filed: July 13, 2011
    Publication date: September 12, 2013
    Applicant: Da Volterra
    Inventors: Claude Bensoussan, Jean De Gunzburg
  • Patent number: 8388984
    Abstract: Compositions which deliver adsorbents, alone or in combination with active drug “degrading molecules,” in a site-specific manner to the intestine, and which eliminate or at least lower the concentration of residual unwanted material within the intestine, and methods of treatment using the compositions, are disclosed. The compositions are ideally designed to specifically release the adsorbents in a programmed manner at a specific site of the intestinal tract. Programmed delivery prevents adsorbents from interfering with the normal absorption process of a given molecule after oral absorption, until it reaches the lower part of the small intestine. The compositions can be used to adsorb, and therefore remove, any residual drug, metabolite thereof, or bacterial toxin after oral or parenteral administration which would otherwise cause adverse effects in the lower intestine and/or colon.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: March 5, 2013
    Assignees: Da Volterra, Centre National de la Recherche Scientifique, Assistance Publique—Hopitaux de Paris, Universite Paris Diderot—Paris 7, Universite Paris-SUD 11
    Inventors: Helene-Celine Huguet, Antoine Andremont, Nicolas Tsapis, Elias Fattal
  • Publication number: 20130052269
    Abstract: The invention relates to a formulation for the delayed and controlled delivery of an adsorbent into the lower intestine of mammals. The formulation includes a carrageenan and an adsorbent, such as activated charcoal. The invention further relates to uses of this formulation, in particular to pharmaceutical uses. In one embodiment, the formulation is used to eliminate or reduce the side effects in the intestine, in particular in the colon, of pharmaceutical agents that are administered as a treatment for a disorder, but that have side effects when they reach the late ileum, the caecum or the colon.
    Type: Application
    Filed: February 23, 2011
    Publication date: February 28, 2013
    Applicant: DA VOLTERRA
    Inventors: Francois Lescure, Jean De Gunzburg
  • Patent number: 8273376
    Abstract: Drug delivery systems for reducing the quantity of residual antibiotics reaching the colon following oral or parenteral antibiotic therapy, and for delivering metallo-dependent enzymes, and methods of use thereof, are disclosed. The drug delivery systems include pectin beads that encapsulate the active agent (which can be a metallo-dependent enzyme). The pectin is crosslinked with zinc or other divalent cations, and the pectin beads are coated with Eudragit®-type polymers. The delivery of the active agent can be modulated to occur at various pre-selected sites of delivery within the intestinal tract. A stable metallo-dependent enzyme formulation can be delivered to the lower intestine or colon. The use of zinc cations to crosslink the pectin is particularly preferred when the metallo-dependent enzymes are zinc dependent, where other cationic used to gel the pectin beads might adversely affect the activity of such metallo-dependent enzymes.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: September 25, 2012
    Assignees: DA Volterra, Assistance Publique-Hopitaux de Paris, Universite Paris Diderot-Paris 7
    Inventors: Antoine Andremont, Helene Huguet
  • Publication number: 20120058936
    Abstract: Oral drug delivery formulations which specifically administer antibacterial agents to the ileum, caecum, and/or the colon, without significant administration elsewhere in the gastrointestinal tract, are disclosed. The formulations include, as actives, a combination of a macrolide or aminoglysoside, or quinolone antibacterial and an anti-Gram-negative lipopeptide (polymyxin) antibacterial agent or other peptide antibacterials effective against Gram-negative bacteria. The formulations can be used to treat infections or unwanted colonization in the colon, and to provide effective decontamination of the colonic flora from unwanted or potentially pathogenic bacteria.
    Type: Application
    Filed: March 12, 2010
    Publication date: March 8, 2012
    Applicants: ASSISTANCE PUBLIQUE - HOPITAUX DE PARIS, DA VOLTERRA, UNIVERSITE PARIS DIDEROT - PARIS 7
    Inventors: Antoine Andremont, Jean De Gunzburg, Francois Lescure
  • Patent number: 8106000
    Abstract: Orally administrable, site-specific (colonic), particulate delivery systems including adsorbents are disclosed. When delivered specifically to the colon, they can remove various substances present in, or as they reach, the colon. Methods of treatment using the delivery systems, and methods of preparing the delivery systems, are also disclosed. The particulate delivery systems are based on adsorbent matrices encapsulated into and/or onto particles, which selectively deliver the adsorbents to the colon. Representative drug delivery devices include pectin beads, which can optionally be crosslinked with metal ions such as zinc and/or calcium. The delivery system protects the adsorbent and prevents its adsorbing effect in the upper gastro-intestinal (GI) tract. When the particles are made from pectin, and the beads are administered to the colon, specific pectinolytic enzymes in the colon degrade the pectin, allowing the adsorbent to be released and to be fully active.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: January 31, 2012
    Assignee: Da Volterra
    Inventors: Helene-Celine Huguet, Elias Fattal, Antoine Andremont, Nicolas Tsapis
  • Patent number: 7833765
    Abstract: The invention concerns multiparticulate galenic formulations for oral administration and designed for colon targeted delivery of active principles selected from the group comprising enzymes capable of inactivating macrolides and the like, enzymes capable of inactivating quinolones and ?-lactamases.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: November 16, 2010
    Assignees: Da Volterra, Centre Nationale de la Recherche Scientifique
    Inventors: Sandrine Bourgeois, Elias Fattal, Antoine Andremont, Patrick Couvreur
  • Publication number: 20090162339
    Abstract: The invention concerns multiparticulate galenic formulations for oral administration and designed for colon targeted delivery of active principles selected from the group comprising enzymes capable of inactivating macrolides and the like, enzymes capable of inactivating quinolones and ?-lactamases.
    Type: Application
    Filed: December 29, 2008
    Publication date: June 25, 2009
    Applicant: DA VOLTERRA
    Inventors: Sandrine Bourgeois, Elias Fattal, Antoine Andremont, Patrick Couvreur
  • Patent number: 7485294
    Abstract: Forms of colonic delivery suited to be used orally and designed for colonic delivery of active ingredients selected from the group comprising enzymes capable of inactivating macrolide antibiotics and related compounds, enzymes capable of inactivating quinolones, and ?-lactamases.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: February 3, 2009
    Assignee: Da Volterra
    Inventors: Sandrine Bourgeois, Elias Fattal, Antoine Andremont, Patrick Couvreur