Patents by Inventor Lakmal Jayasinghe

Lakmal Jayasinghe 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: 11965183
    Abstract: The invention relates to modified Dda helicases which can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: April 23, 2024
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Andrew John Heron, Rebecca Victoria Bowen, Mark Bruce, Lakmal Jayasinghe, Joseph Hargreaves Lloyd, Szabolcs Soeroes, Elizabeth Jayne Wallace, Christopher Peter Youd
  • Patent number: 11945840
    Abstract: The present invention relates to novel protein pores and their uses in analyte detection and characterisation. The invention particularly relates to an isolated pore complex formed by a CsgG-like pore and a modified CsgF peptide, or a homologue or mutant thereof, thereby incorporating an additional channel constriction or reader head in the nanopore. The invention further relates to a transmembrane pore complex and methods for production of the pore complex and for use in molecular sensing and nucleic acid sequencing applications.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: April 2, 2024
    Assignees: VIB VZW, Vrije Universiteit Brussel, Oxford Nanopore Technologies PLC
    Inventors: Han Remaut, Sander Van Der Verren, Nani Van Gerven, Lakmal Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Jordan, John Joseph Kilgour
  • Patent number: 11939359
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using the mutant forms of lysenin.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: March 26, 2024
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, Mark Bruce, Luke McNeill, Ramiz Iqbal Nathani, Pratik Raj Singh, Neil Roger Wood, Stephen Robert Young
  • Patent number: 11859247
    Abstract: The invention relates to constructs comprising a transmembrane protein pore subunit and a nucleic acid handling enzyme. The pore subunit is covalently attached to the enzyme such that both the subunit and enzyme retain their activity. The constructs can be used to generate transmembrane protein pores having a nucleic acid handling enzyme attached thereto. Such pores are particularly useful for sequencing nucleic acids. The enzyme handles the nucleic acid in such a way that the pore can detect its component nucleotides by stochastic sensing.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: January 2, 2024
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, John Hagan Pryce Bayley, Stephen Cheley, Brian McKeown, James White, James Clarke
  • Patent number: 11845780
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using lysenin.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: December 19, 2023
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Mark Bruce, James Anthony Clarke, Andrew John Heron, Lakmal Jayasinghe, Elizabeth Jayne Wallace
  • Patent number: 11840556
    Abstract: Provided herein relate to modified or mutant forms of secretin and compositions comprising the same. In particular, the modified or mutant forms of secretin permits efficient capture and/or translocation of an analyte through the modified or mutant secretin nanopores. Methods for using unmodified secretin or the modified or mutant forms of secretin and compositions, for example, for characterizing an analyte, e.g., a target polynucleotide, are also provided.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: December 12, 2023
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh
  • Publication number: 20230227799
    Abstract: The invention relates to modified helicases with reduced unbinding from polynucleotides. The helicases can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Application
    Filed: October 18, 2022
    Publication date: July 20, 2023
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Andrew John Heron, James Anthony Clarke, Ruth Moysey, Elizabeth Jayne Wallace, Mark John Bruce, Lakmal Jayasinghe, Domenico Caprotti, Szabolcs Soeroes, Luke McNeill, David Antoni Alves, Rebecca Victoria Bowen, John Milton
  • Publication number: 20230084931
    Abstract: Methods of characterizing an analyte using a nanopore. One aspect features methods for characterizing a double-stranded polynucleotide using a nanopore, e.g., without using a hairpin connecting a template and a complement of the double-stranded polynucleotide. Another aspect features methods for characterizing an analyte using a tag-modified nanopore with increased sensitivity and/or higher throughput. Compositions and systems including, e.g., adaptors for attachment to double-stranded polynucleotides and tag-modified nanopores, which can be used in the methods are also provided.
    Type: Application
    Filed: August 3, 2022
    Publication date: March 16, 2023
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: James Anthony Clarke, James White, Richard Muscat, Jessica Mary May Knott, Ramiz Iqbal Nathani, Andrew John Heron, Mark John Bruce, Lakmal Jayasinghe, Domenico Caprotti, David Jackson Stoddart, Rebecca Victoria Bowen, Christopher James Wright, Paul Richard Moody
  • Publication number: 20230012471
    Abstract: The invention relates to a new method of characterising a target RNA polynucleotide by taking one or more measurements as the target RNA polynucleotide moves with respect to a transmembrane pore. The movement is controlled by a DNA helicase. The invention also relates to a modified RNA construct wherein the RNA polynucleotide has been modified to increase DNA helicase binding thereto.
    Type: Application
    Filed: April 30, 2021
    Publication date: January 12, 2023
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Daniel Ryan Garalde, Andrew John Heron, Lakmal Jayasinghe, Daniel John Turner, James White
  • Patent number: 11525126
    Abstract: The invention relates to modified helicases with reduced unbinding from polynucleotides. The helicases can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: December 13, 2022
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Andrew Heron, Anthony Clarke, Ruth Moysey, Elizabeth Jayne Wallace, Mark John Bruce, Lakmal Jayasinghe, Domenico Caprotti, Szabolcs Soeroes, Luke McNeill, David Antoni Alves, Rebecca Victoria Bowen, John Milton
  • Publication number: 20220283141
    Abstract: The invention relates to a novel method of producing hetero-oligomeric pores. The invention also relates to hetero-oligomeric pores produced using the method and polynucleotide characterisation using the hetero-oligomeric pores.
    Type: Application
    Filed: March 14, 2022
    Publication date: September 8, 2022
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, John Joseph Kilgour, Neil Roger Wood
  • Publication number: 20220162264
    Abstract: The present invention relates to novel protein pores and their uses in analyte detection and characterisation. The invention particularly relates to an isolated pore complex formed by a CsgG-like pore and a modified CsgF peptide, or a homologue or mutant thereof, thereby incorporating an additional channel constriction or reader head in the nanopore. The invention further relates to a transmembrane pore complex and methods for production of the pore complex and for use in molecular sensing and nucleic acid sequencing applications.
    Type: Application
    Filed: March 18, 2021
    Publication date: May 26, 2022
    Applicants: Oxford Nanopore Technologies Limited, VIB VZW, Vrije Universiteit Brussel
    Inventors: Han Remaut, Sander Van Der Verren, Nani Van Gerven, Lakmal Jayasinghe, Elizabeth Jayne Wallace, Pratik Raj Singh, Richard George Hambley, Michael Jordan, John Joseph Kilgour
  • Publication number: 20220154269
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterization using CsgG.
    Type: Application
    Filed: March 8, 2021
    Publication date: May 19, 2022
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Lakmal Jayasinghe, Elizabeth Jayne Wallace
  • Publication number: 20220135956
    Abstract: The invention relates to modified Dda helicases which can be used to control the movement of polynucleotides and are particularly useful for sequencing polynucleotides.
    Type: Application
    Filed: October 13, 2021
    Publication date: May 5, 2022
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Andrew John Heron, Rebecca Victoria Bowen, Mark Bruce, Lakmal Jayasinghe, Joseph Hargreaves Lloyd, Szabolcs Soeroes, Elizabeth Jayne Wallace, Christopher Peter Youd
  • Publication number: 20220119879
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterization using CsgG.
    Type: Application
    Filed: October 26, 2021
    Publication date: April 21, 2022
    Applicant: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, Elizabeth Jayne Wallace
  • Patent number: 11307192
    Abstract: The invention relates to a novel method of producing hetero-oligomeric pores. The invention also relates to hetero-oligomeric pores produced using the method and polynucleotide characterisation using the hetero-oligomeric pores.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: April 19, 2022
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, John Joseph Kilgour, Neil Roger Wood
  • Publication number: 20220064722
    Abstract: The invention relates to constructs comprising a transmembrane protein pore subunit and a nucleic acid handling enzyme. The pore subunit is covalently attached to the enzyme such that both the subunit and enzyme retain their activity. The constructs can be used to generate transmembrane protein pores having a nucleic acid handling enzyme attached thereto. Such pores are particularly useful for sequencing nucleic acids. The enzyme handles the nucleic acid in such a way that the pore can detect its component nucleotides by stochastic sensing.
    Type: Application
    Filed: June 23, 2021
    Publication date: March 3, 2022
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Lakmal Jayasinghe, John Hagan Pryce Bayley, Stephen Cheley, Brian McKeown, James White, James Clarke
  • Publication number: 20220064230
    Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using the mutant forms of lysenin.
    Type: Application
    Filed: July 26, 2021
    Publication date: March 3, 2022
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Lakmal Jayasinghe, Mark Bruce, Luke McNeill, Ramiz Iqbal Nathani, Pratik Raj Singh, Neil Roger Wood, Stephen Robert Young
  • Publication number: 20210395811
    Abstract: The invention relates to a new method of characterising a target RNA polynucleotide by taking one or more measurements as the target RNA polynucleotide moves with respect to a transmembrane pore. The movement is controlled by a DNA helicase. The invention also relates to a modified RNA construct wherein the RNA polynucleotide has been modified to increase DNA helicase binding thereto.
    Type: Application
    Filed: April 30, 2021
    Publication date: December 23, 2021
    Applicant: Oxford Nanopore Technologies Ltd.
    Inventors: Daniel Ryan Garalde, Andrew John Heron, Lakmal Jayasinghe, Daniel John Turner, James White
  • Patent number: 11186868
    Abstract: The invention relates to mutant forms of CsgG. The invention also relates to analyte detection and characterisation using CsgG.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: November 30, 2021
    Assignee: Oxford Nanopore Technologies PLC
    Inventors: Lakmal Jayasinghe, Elizabeth Jayne Wallace