Patents by Inventor Jan Lotvall

Jan Lotvall 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: 20230160897
    Abstract: There is disclosed a method of identifying colon cancer-specific vesicle-associated proteins from a tissue sample of a subject. The method comprises isolating tissue-resident extracellular vesicles from the tissue sample; identifying vesicle-associated proteins associated with the isolated tissue-resident extracellular vesicles; quantifying the identified vesicle-associated proteins to identify one or more major vesicle-associated proteins; creating vesicle-associated protein profiles for the identified vesicle-associated proteins; and comparing the vesicle-associated protein profiles for the identified vesicle-associated proteins with pre-determined vesicle-associated protein profiles of the tumour tissue samples and/or non-tumour tissue samples.
    Type: Application
    Filed: March 31, 2021
    Publication date: May 25, 2023
    Inventors: Jan LOTVALL, Aleksander CVJETKOVIC, Cecilia LASSER
  • Patent number: 11561223
    Abstract: Disclosed is a method of isolating extracellular vesicles and identifying membrane proteins therefrom. The method includes providing human plasma and/or serum; separating lipoproteins and extracellular vesicles from the human plasma and/or serum by a density gradient preparation, collecting the extracellular vesicles from the separated lipoproteins and extracellular vesicles; isolating and purifying the collected extracellular vesicles by using size exclusion chromatography; treating the isolated and purified extracellular vesicles with an aqueous solution to obtain membranes of the extracellular vesicles, wherein the aqueous solution has a pH in a range of 9 to 14; adding salt in a concentration range between 0.5-2.0M to the aqueous solution; isolating the membranes from the treated extracellular vesicles and identifying proteins on the isolated membranes by employing mass spectrometry.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: January 24, 2023
    Assignee: Exocure Biosciences Inc.
    Inventors: Jan Lotvall, Su Chul Jang, Aleksander Cvjetkovic, Cecilia Lasser
  • Publication number: 20220387505
    Abstract: The present disclosure provides ghost nanovesicles (gNVs) that are deficient in cytosolic components. Methods of making such vesicles and therapeutic uses of such vesicles are also provided. The gNVs may be used in preventing or treating conditions that may benefit from administration of the gNVs. Such conditions include conditions that involve inflammation.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 8, 2022
    Inventors: Jan Lötvall, Kyong-su Park
  • Publication number: 20220334120
    Abstract: The present disclosure relates to a method of isolating extracellular vesicles directly from human tissues. The invention further relates to a method of identifying disease and tissue specific membrane proteins on extracellular vesicles by membrane isolation and proteomic analysis. The invention further relates to methods of diagnosing diseases by capturing extracellular vesicles by the use of disease specific membrane proteins from body fluids, and detecting or analyzing molecular signatures (proteome, DNA, and RNA) on captured extracellular vesicles. Moreover, the present invention relates to kits, apparatus and software required for implementing aforementioned methods.
    Type: Application
    Filed: April 28, 2022
    Publication date: October 20, 2022
    Inventors: Jan Lötvall, Su Chul Jang, Rossella Crescitelli
  • Patent number: 11333665
    Abstract: The present disclosure relates to a method of isolating extracellular vesicles directly from human tissues. The invention further relates to a method of identifying disease and tissue specific membrane proteins on extracellular vesicles by membrane isolation and proteomic analysis. The invention further relates to methods of diagnosing diseases by capturing extracellular vesicles by the use of disease specific membrane proteins from body fluids, and detecting or analyzing molecular signatures (proteome, DNA, and RNA) on captured extracellular vesicles. Moreover, the present invention relates to kits, apparatus and software required for implementing aforementioned methods.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 17, 2022
    Assignee: Exocure Biosciences, Inc.
    Inventors: Jan Lotvall, Su Chul Jang, Rossella Crescitelli
  • Publication number: 20220080035
    Abstract: Non-naturally occurring vesicles derived from bacteria, e.g., pathogenic bacteria, methods for making the vesicles, and methods for using compositions of these vesicles are disclosed. Methods of using the vesicles include prevention and/or treatment of bacterial infections. Also provided herein are compositions that include vesicles derived front bacteria and tumor vesicles, methods for making the tumor vesicles, and methods for using the compositions of bacterial vesicles and tumor vesicles. Methods of using the compositions of bacterial vesicles and tumor vesicles include treatment of cancer in a subject. Tumor vesicles may be derived from cancer cells present in the subject to be treated or from a cancer cell line expressing at least one neoantigen. The neoantigen may be specific to the subject and may have been identified by sequencing of the cancer cells from the subject. The neoantigen may be a neoantigen known to be commonly expressed in a particular type of cancer.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 17, 2022
    Inventors: Kyong-su PARK, Rossella CRESCITELLI, Jan LÖTVALL
  • Publication number: 20210000976
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Application
    Filed: June 18, 2020
    Publication date: January 7, 2021
    Applicant: Codiak BioSciences, Inc.
    Inventors: Jan LÖTVALL, Hadi VALADI
  • Publication number: 20200249234
    Abstract: Disclosed is a method of isolating extracellular vesicles and identifying membrane proteins therefrom. The method includes providing human plasma and/or serum; separating lipoproteins and extracellular vesicles from the human plasma and/or serum by a density gradient preparation, collecting the extracellular vesicles from the separated lipoproteins and extracellular vesicles; isolating and purifying the collected extracellular vesicles by using size exclusion chromatography; treating the isolated and purified extracellular vesicles with an aqueous solution to obtain membranes of the extracellular vesicles, wherein the aqueous solution has a pH in a range of 9 to 14; adding salt in a concentration range between 0.5-2.0M to the aqueous solution; isolating the membranes from the treated extracellular vesicles and identifying proteins on the isolated membranes by employing mass spectrometry.
    Type: Application
    Filed: September 17, 2018
    Publication date: August 6, 2020
    Inventors: Jan LOTVALL, Su Chul JANG, Aleksander CVJETKOVIC, Cecilia LASSER
  • Patent number: 10695443
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: June 30, 2020
    Assignee: Codiak BioSciences, Inc.
    Inventors: Jan Lötvall, Hadi Valadi
  • Publication number: 20200163998
    Abstract: The invention relates to methods for production of extracellular vesicle-mimetic nanovesicles from mesenchymal stem cells to treat or prevent inflammatory related conditions or diseases. Included with the invention are pharmaceutical compositions comprising extracellular vesicle-mimetic nanovesicles derived from mesenchymal stem cells for the treatment or prevention of inflammatory related conditions.
    Type: Application
    Filed: July 17, 2018
    Publication date: May 28, 2020
    Applicant: Codiak BioSciences, Inc.
    Inventors: Kyong-su PARK, Elga Bernardo BANDEIRA DE MELO, Jan LOTVALL
  • Publication number: 20200155703
    Abstract: The present invention relates to a method for producing membrane vesicles from extracellular vesicles or organelles and therapeutic membrane vesicles produced by such method. The invention further relates to therapeutic membrane vesicles, a method of treating a metabolic disorder by using such vesicles and such vesicles for use in therapy, such as in treatment of a metabolic disorder. The invention further relates to a method of producing a membrane vesicle from an organelle. In addition, the present invention relates to a method of separating a sub-population of extracellular vesicles from an extracellular vesicle bulk.
    Type: Application
    Filed: March 15, 2017
    Publication date: May 21, 2020
    Inventors: Jan Lõtvall, Su Chul Jang
  • Publication number: 20200088734
    Abstract: The present disclosure relates to a method of isolating extracellular vesicles directly from human tissues. The invention further relates to a method of identifying disease and tissue specific membrane proteins on extracellular vesicles by membrane isolation and proteomic analysis. The invention further relates to methods of diagnosing diseases by capturing extracellular vesicles by the use of disease specific membrane proteins from body fluids, and detecting or analyzing molecular signatures (proteome, DNA, and RNA) on captured extracellular vesicles. Moreover, the present invention relates to kits, apparatus and software required for implementing aforementioned methods.
    Type: Application
    Filed: March 22, 2018
    Publication date: March 19, 2020
    Inventors: Jan Lotvall, Su Chul Jang, Rossella Crescitelli
  • Publication number: 20200063138
    Abstract: A method of producing nanovesicles comprising an oligonucleotide inhibitor to an oncogene or a proto-oncogene or the gene product thereof, said method comprises a) introducing a DNA sequence encoding an oligonucleotide capable of inhibiting a human oncogenic or proto-oncogenic transcription factor, into a mammalian cell; b) allowing the cell to express said inhibitor oligonucleotide; and c) obtaining nanovesicles containing said inhibitor oligonucleotide from said cell. Nanovesicles produced by the claimed method can be effectively and specifically targeted to e.g. cancer cells to deliver the inhibitor oligonucleotide.
    Type: Application
    Filed: August 2, 2019
    Publication date: February 27, 2020
    Applicant: Codiak BioSciences, Inc.
    Inventors: Jan LÖTVALL, Jonas Andrej NILSSON
  • Patent number: 10370663
    Abstract: A method of producing nanovesicles comprising an oligonucleotide inhibitor to an oncogene or a proto-oncogene or the gene product thereof, said method comprises a) introducing a DNA sequence encoding an oligonucleotide capable of inhibiting a human oncogenic or proto-oncogenic transcription factor, into a mammalian cell; b) allowing the cell to express said inhibitor oligonucleotide; and c) obtaining nanovesicles containing said inhibitor oligonucleotide from said cell. Nanovesicles produced by the claimed method can be effectively and specifically targeted to e.g. cancer cells to deliver the inhibitor oligonucleotide.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: August 6, 2019
    Assignee: Codiak BioSciences, Inc.
    Inventors: Jan Lötvall, Jonas Andrej Nilsson
  • Publication number: 20190111155
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Application
    Filed: November 27, 2018
    Publication date: April 18, 2019
    Inventors: Jan LÖTVALL, Hadi VALADI
  • Publication number: 20180236104
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Application
    Filed: December 28, 2017
    Publication date: August 23, 2018
    Inventors: Jan LÖTVALL, Hadi VALADI
  • Publication number: 20180135056
    Abstract: A method of producing nanovesicles comprising an oligonucleotide inhibitor to an oncogene or a proto-oncogene or the gene product thereof, said method comprises a) introducing a DNA sequence encoding an oligonucleotide capable of inhibiting a human oncogenic or proto-oncogenic transcription factor, into a mammalian cell; b) allowing the cell to express said inhibitor oligonucleotide; and c) obtaining nanovesicles containing said inhibitor oligonucleotide from said cell. Nanovesicles produced by the claimed method can be effectively and specifically targeted to e.g. cancer cells to deliver the inhibitor oligonucleotide.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 17, 2018
    Inventors: Jan LÖTVALL, Jonas Andrej NILSSON
  • Patent number: 9889210
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 13, 2018
    Assignee: Codiak BioSciences, Inc.
    Inventors: Jan Lötvall, Hadi Valadi
  • Patent number: 9856477
    Abstract: A method of producing nanovesicles comprising an oligonucleotide inhibitor to an oncogene or a proto-oncogene or the gene product thereof, said method comprises a) introducing a DNA sequence encoding an oligonucleotide capable of inhibiting a human oncogenic or proto-oncogenic transcription factor, into a mammalian cell; b) allowing the cell to express said inhibitor oligonucleotide; and c) obtaining nanovesicles containing said inhibitor oligonucleotide from said cell. Nanovesicles produced by the claimed method can be effectively and specifically targeted to e.g. cancer cells to deliver the inhibitor oligonucleotide.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 2, 2018
    Assignee: Codiak BioSciences, Inc.
    Inventors: Jan Lötvall, Jonas Andrej Nilsson
  • Publication number: 20170258938
    Abstract: Methods for introducing nucleic acids to cells via exosomes for use in gene modulation and therapy, such as for gene silencing and to introduce genetic material into cells to compensate for abnormal genes or to induce or repress a process in the recipient cell.
    Type: Application
    Filed: March 31, 2017
    Publication date: September 14, 2017
    Inventors: Jan LÖTVALL, Hadi VALADI