Demonstrated Protocol, Last Modified on August 25, 2020, Permalink
Multimeric MHC peptide complexes, such as Dextramers, bind to T-cell receptors (TCRs) with high affinity, which can enable detection of TCR antigen specificity. This protocol provides guidance for labeling cells with dCODE Dextramer (Dextramer MHC-Feature Barcode oligonucleotide conjugate), along with guidance for enriching Dextramer+ T cells by Fluorescence Activated Cell Sorting (FACS). These Dextramer labeled cells can be used for generating Chromium Single Cell libraries as described in the User Guide for Chromium Immune Profiling Solution with Feature Barcoding technology (CG000186, CG000208).
Antigen-only analysis is not currently supported by 10x Genomics. For antigen analysis, we recommend staining with dextramer reagents in conjunction with a small panel of TotalSeq-C antibodies. This increases the cell calling accuracy of the data. Please contact 10x Genomics support at [email protected] for TotalSeq-C antibody recommendations.