CA2652452C

Neutralizing antibodies to influenza viruses

Abstract

The present invention concerns methods and means for identifying, producing, and engineering neutralizing antibodies against influenza A viruses, and to the neutralizing antibodies produced. In particular, the invention concerns neutralizing antibodies against various influenza A virus subtypes, including neutralizing antibodies against two or more of Hl, H2, H3, H5, H7 and H9, such as, for example all of Hl, H2, H3, and H5 subtypes, and methods and means for making such antibodies. More specifically, the invention concerns antibodies capable of neutralizing more than one, preferably all, isolates of an influenza A virus subtype.

CA2652452C, drawing sheet 1
Sheet 1 of 30

Term

Projected expiry 15 May 2027.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Projected expiry

18 claims: 7 independent, 11 dependent

  1. 1
    CA 2652452 2017-04-19 What is Claimed is:1. A method of making a donor-specific library expressing a collection of antibodies or antibody fragments to a target antigen, comprising the steps of: a) obtaining mRNA from lymphocytes of a human patient donor who has suffered from, or who is suffering from a disease evoking antibody production to said antigen;b) generating in a vector a collection of nucleic acids comprising sequences encoding an immunoglobulin repertoire of said patient by reverse transcription of said obtained mRNA;and c) identifying said donor-specific library with a unique nucleotide sequence barcode that is linked to and labels said nucleic acids in the vector.
  2. 10
    The method of any one of claims 1 to 9, wherein the nucleotide sequence barcode is linked to and labels said nucleic acids such that it does not interfere with the expression of said nucleic acid molecules.
  3. 11
    The method of any one of claims 1 to 10, wherein said nucleotide sequence barcode is a contiguous non-coding sequence of one to about 24 nucleotides.
  4. 13
    The method of any one of claims 1 to 9, wherein said nucleotide sequence barcode is a coding sequence or one or more silent mutations incorporated into the nucleic acid molecules encoding the antibody light or heavy chains or fragments thereof.
  5. 14
    The method of any one of claims 1 to 9, wherein said nucleotide sequence barcode is non-contiguous.
  6. 17
    The method of any one of claims 1 to 9, wherein the barcode encodes a peptide or polypeptide sequence.
  7. 18
    The method of any one of claims 1 to 17, wherein the mRNA is obtained from bone marrow of the donor.