Sequencing and Affinity Determination of Antigen-Specific B Lymphocytes from Peripheral Blood

Methods Mol Biol. 2018:1827:287-309. doi: 10.1007/978-1-4939-8648-4_15.

Abstract

Here we describe methods for screening human blood to isolate peripheral blood mononuclear cells (PBMCs) capable of binding fluorescently labeled antigen, as well as methods for the amplification and sequencing of B cell receptor (BCR) heavy and light chain genes. Detailed protocols are provided for transient mammalian expression in a hexahistidine-tagged Fab format, purification by immobilized metal affinity chromatography (IMAC), and affinity determination by BioLayer interferometry (BLI).

Keywords: Affinity determination; Antigen-specific B cells; B cell receptor; Mammalian expression; Single-cell sequencing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigens / blood*
  • B-Lymphocytes / immunology*
  • Chromatography, Affinity / methods*
  • Electrophoresis, Polyacrylamide Gel
  • Epitopes*
  • Fluorescent Dyes / metabolism
  • Humans
  • Immunoglobulin Fab Fragments / metabolism
  • Interferometry
  • Receptors, Antigen, B-Cell / chemistry
  • Receptors, Antigen, B-Cell / metabolism
  • Sequence Analysis, Protein / methods*

Substances

  • Antigens
  • Epitopes
  • Fluorescent Dyes
  • Immunoglobulin Fab Fragments
  • Receptors, Antigen, B-Cell