Patents by Inventor Michel Chretien

Michel Chretien 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: 20210161933
    Abstract: A kit for reducing the risk of filovirus hemorrhagic fever or a symptom thereof in a mammal host exposed to a filovirus (e.g., Ebola or Zika virus), comprising an effective amount of quercetin-3?-O-D-glucoside (Q3G) or an analogue thereof, or a composition comprising Q3G or analogue thereof and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: January 26, 2021
    Publication date: June 3, 2021
    Inventors: Michel CHRÉTIEN, Majambu MBIKAY, Xiangguo QIU
  • Patent number: 10987371
    Abstract: A method of reducing the risk of filovirus hemorrhagic fever or a symptom thereof in a mammal host exposed to a filovirus (e.g., Ebola or Zika virus), comprising administering an effective amount of quercetin-3 ?-O-D-glucoside (Q3G) or an analogue thereof, or a composition comprising Q3G or analogue thereof and a pharmaceutically acceptable carrier, to said host prior to said exposure.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 27, 2021
    Inventors: Michel Chrétien, Majambu Mbikay, Xiangguo Qiu
  • Publication number: 20180353528
    Abstract: A method of reducing the risk of filovirus hemorrhagic fever or a symptom thereof in a mammal host exposed to a filovirus (e.g., Ebola or Zika virus), comprising administering an effective amount of quercetin-3 ?-O-D-glucoside (Q3G) or an analogue thereof, or a composition comprising Q3G or analogue thereof and a pharmaceutically acceptable carrier, to said host prior to said exposure.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 13, 2018
    Inventors: MICHEL CHRÉTIEN, MAJAMBU MBIKAY, XIANGGUO QIU
  • Publication number: 20150190369
    Abstract: There is described herein a use of quercetin-3-O-?-D-glucoside (Q3G) for increasing the amount of cell surface low-density lipoprotein receptor (LDLR) on a cell and for reducing the amount of functional proprotein convertase subtilisin/kexin type 9 (PCSK9) secreted by the cell, where the Q3G is formulated for administration to the cell, and where the increase in cell surface LDLR and the decrease in secretion of functional PCSK9 is in comparison to the cell not exposed to Q3G. The use may optionally include the treatment of a statin. There is also described a method of reducing plasma cholesterol levels in a patient in need thereof. The method includes treating the patient with a therapeutically effective amount of Q3G and, optionally, a therapeutically effective amount of a statin.
    Type: Application
    Filed: June 28, 2013
    Publication date: July 9, 2015
    Inventors: Majambu Mbikay, Francine Sirois, Michel Chretien, Janice Mayne
  • Patent number: 7928189
    Abstract: The present invention provide PCSK9 polypeptides, fragments thereof and methods of modulating PCSK9 phosphorylation and low density lipoprotein degradation.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: April 19, 2011
    Assignee: Ottawa Health Research Institute
    Inventors: Janice Mayne, Michel Chrétien, Majambu Mbikay
  • Patent number: 7900964
    Abstract: A section of a motor vehicle front low area includes a first extendable elongated part, whose rear end is placed in front of a vehicle structural element embodied in a form of a cradle, whereas the front end thereof is connected to a bar-type structural element of the vehicle by a first connection device. The rear end of the first elongated part is movably mounted in front of the cradle-shaped vehicle structural element. The first connection device includes a connection in a form of a slide bar enabling a substantially longitudinal movement to be carried out and a removable stop member for normally hindering movement up to the removal.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: March 8, 2011
    Assignee: ArcelorMittal Tubular Products Vitry
    Inventors: Jean-Michel Chretien, Arnaud Cocu, Jean-Louis Colmont, Thierry Derchu
  • Publication number: 20100201159
    Abstract: A section of a motor vehicle front low area includes a first extendable elongated part, whose rear end is placed in front of a vehicle structural element embodied in a form of a cradle, whereas the front end thereof is connected to a bar-type structural element of the vehicle by a first connection device. The rear end of the first elongated part is movably mounted in front of the cradle-shaped vehicle structural element. The first connection device includes a connection in a form of a slide bar enabling a substantially longitudinal movement to be carried out and a removable stop member for normally hindering movement up to the removal.
    Type: Application
    Filed: June 6, 2006
    Publication date: August 12, 2010
    Applicant: Vallourec Composants Automobiles Vitry
    Inventors: Jean-Michel Chretien, Arnaud Cocu, Jean-Louis Colmont, Thierry Derchu
  • Publication number: 20090275504
    Abstract: The present invention provide PCSK9 polypeptides, fragments thereof and methods of modulating PCSK9 phosphorylation and low density lipoprotein degradation.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 5, 2009
    Inventors: Janice Mayne, Michel Chretien, Majambu Mbikay
  • Patent number: 7211424
    Abstract: Using RT-PCR and degenerate oligonucleotides derived from the active site residues of subtilisin-kexin-like serine proteinases, we have identified a highly conserved and phylogenetically ancestral human, rat and mouse type-I membrane-bound proteinase called subtilisin-kexin-isozyme-1 (SKI-1). Computer data bank searches reveals that human SKI-1 was previously cloned but with no identified function. A SKI-1 processed fragment is secreted in culture media in a soluble form. In vitro studies suggest that SKI-1 is a Ca2+-dependent serine proteinase exhibiting a wide pH optimum for cleavage of proBDNF. Peptides mimicking SKI-1 cleavages sites are also disclosed. SKI-1 prosegment has an ex vivo inhibitory effect on SKI-1 activity. The prosegment is also processed and secreted in culture media. One of its fragments is found tightly associated with the SKI-1 soluble form. Therapeutic applications for SKI-1 inhibitors are disclosed.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: May 1, 2007
    Assignee: Institut de Recherches Cliniques de Montreal
    Inventors: Nabil G. Seidah, Michel Chretien, Mieczyslaw Marcinkiewicz
  • Publication number: 20040180417
    Abstract: A novel Asp-ase activity, referred to as BACE secretase/sheddase, has been found to cleave the ectoddomain of BACE after Asp379 (SQDD↓) and Asp407 (VVFD↓), and likely after Asp451 (PQTD↓). The cleavage of BACE by BACE secretase/sheddase renders BACE soluble which in turns appears to enhance the generation of the amyloidogenic peptide A&bgr;, which has been implicated as a major factor in the etiology of Alzheimer's Disease. The current invention concerns the modulation of this novel BACE secretase/sheddase activity for such applications as the prevention or treatment of a neurodegenerative disorder that is characterized by the generation of A&bgr; protein, including Alzheimer's Disease.
    Type: Application
    Filed: April 5, 2004
    Publication date: September 16, 2004
    Inventors: Nabil G. Seidah, Michel Chretien, James A. Cromish
  • Patent number: 6380171
    Abstract: The present invention relates to the cloning of human pro-protein converting enzyme 5 (PC5) CDNA isolated from human adrenal gland messenger RNA. Additionally, this invention relates to a method for reducing restenosis occurring at an injured vascular site comprising delivering to the injured site an antisense nucleic acid to suppress the expression of human PC5.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: April 30, 2002
    Assignees: Clinical Research Institute of Montreal, Universite de Montreal, Centre hospitalier de l'Universite de Montreal
    Inventors: Robert Day, Nabil G. Seidah, Rémi Martel, Michel Chrétien, Tim Reudelhuber, Guy LeClerc
  • Patent number: 5840529
    Abstract: This invention relates to a novel and seventh member of the subtilisin-kexin family isolated from rat, which has been named rPC7. The rat spleen cDNA has been totally sequenced. A shorter DNA sequence has been obtained for human, which corresponds to a portion of the catalytic region of a human pro-hormone convertase corresponding to the rat pro-hormone convertase. PC7 clearly distinguishes from the other mammalian members of the subtilisin-kexin family. Its tissue distribution is ubiquitous, but its presence is particularly remarkable in lymphoid tissues. It is present in LoVo cells that are able to cleave the HIV gp160 protein into active gp120/gp41 proteins and that are deficient in other effective pro-hormone convertases known up to date. Therefore, it is proposed that PC7 is a good candidate as a maturation enzyme responsible for the conversion of HIV gp160 protein in target CD.sup.+4 cells.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: November 24, 1998
    Assignee: Clinical Research Institute of Montreal
    Inventors: Nabil G. Seidah, Robert Day, Michel Chretien
  • Patent number: 5789564
    Abstract: The present invention relates to pro-hormone convertases and polypeptidic fragments thereof, nucleic acids encoding them, recombinant viruses expressing these convertases, polyclonal antibodies directed against the convertases, diagnostic kits for the detection and measurement of the convertase content in cell or tissue lysates, culture media or biological fluids by RIA. Diagnostic kits were also developped for detection or measurement of nucleic acids, preferably mRNAs, in cell or tissue lysates by hybridization. The invention also concerns oligonucleotides useful as probes or as primers for DNA synthesis. These oligonucleotides were included in the diagnostic kits as well as used for the obtention of specific fragments of the convertases which have served, together with native convertases, as antigens for the obtention of antibodies. The convertases were produced by mammalian cell lines transfected with the recombinant viruses and purified on affinity columns which are also an object of the invention.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: August 4, 1998
    Assignee: Institut de Recherches Cliniques de Montreal
    Inventors: Nabil G. Seidah, Michel Chretien
  • Patent number: 4632780
    Abstract: There are disclosed the N-terminal fragment of human pro-opiomelanocortin, a glycopeptide composed of 76 amino acid residues, and a process for preparing same from human pituitary glands. The glycopeptide is useful in potentiating the effects of ACTH on steroidogenesis, in stimulating the production of aldosterone, as a diagnostic tool, as well as a reagent for determining its presence in biological fluids and tissues by immunochemical means.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: December 30, 1986
    Inventors: Nabil G. Seidah, Michel Chretien
  • Patent number: 4607023
    Abstract: Novel peptides in substantially pure form and selected from the group of peptides having the amino acid sequence:X-Cys-Phe-Gly-Gly-Arg-Ile-Asp-Arg-Ile-Gly-Ala-Gln-Ser-Gly-Leu-Gly-Cys-Y-ZwhereinY is selected from the group consisting of -Asn, -Asn-Ser, -Asn-Ser-Phe, -Asn-Ser-Phe-Arg, and -Asn-Ser-Phe-Arg-Tyr;Z is OH or NH.sub.2 ; andX is selected from the group consisting of H, Ser-, Ser-Ser-, Arg-Ser-Ser-, Arg-Arg-Ser-Ser-, Leu-Arg-Arg-Ser-Ser, Ser-Leu-Arg-Arg-Ser-Ser-, Arg-Ser-Leu-Arg-Arg-Ser-Ser-, Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser-, Gly-Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser, Ala-Gly-Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser-, Leu-Ala-Gly-Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser, and Glu-Val-Pro-Trp-Thr-Gly-Glu-Val-Asn-Pro-Ser-Gln-Arg-Asp-Gly-Gly-Ala-Leu-Gl y-Arg-Gly-Pro-Trp-Asp-Pro-Ser-Asp-Arg-Ser-Ala-Leu-Lys-Ser-Lys-Leu-Arg-Ala-L eu-Leu-Ala-Gly-Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser-,are disclosed as having diuretic, natriuretic, vasorelaxant, hypotensive or anti-hypertensive properties.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: August 19, 1986
    Assignee: L'Institut de Recherches Cliniques de Montreal
    Inventors: Gaetan Thibault, Raul Garcia, Marc Cantin, Nabil Seidah, Claude Lazure, Michel Chretien