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July 31, 2024

Single-Cell Multi-Omics for Antigen-Specific T Cells with dCODE Dextramer®

Parean Biotechnologies

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The MHC dCODE Dextramer® system integrates a DNA oligonucleotide with a unique barcode signature sequence into the dextran backbone, detailing the specific monomeric peptide-MHC complexes on the Dextramer®. This allows for efficient indexing of antigen-specific T cells and supports multiplexing for diverse TCR specificities. The DNA oligonucleotide in the dCODE Dextramer® (10x) is specifically engineered to be compatible with the 10x Chromium system, facilitating the collection and processing of numerous single cells.

 

 

  • Classical or tailored made antigens available.
  • Multiple barcodes available for multiplexing.
  • Adaptable for T, B and non-conventional T cells.
  • Proven, tested, and published technology.

dCode molecule construction for T cells. dCode can be adapted to different cell types, HLA, antigens and multiple barcoded are available to multiplex different antigens in the same experiment.

dCode+ cells sorting. Dot plot representing the gating strategy to sort antigen specific cells stained with dCode.

Applications of Dextramers in Immunology Studies

Dextramers are dedicated to decipher immune cell responses in infectious diseases and cancer. At the single-cell level, and combined with transcriptomics, we gain insights into the functionality of pathogen- and tumor antigen-specific cells, contributing to the development of novel immunotherapeutic strategies.

UMAP of antigen-specific cells at the single-cell level. The table represents the V(D)J sequence of the TCR specific for different antigens.

Heatmap of the differential gene and surface protein expression for the antigen-specific cells. Colors are related to antigen-specific cell clusters.

In conclusion...

… dextramers are crucial for advancing immune analysis through precise identification and characterization of antigen-specific T cells. Combined with transcriptomic, this technology leads to new perspectives on immune function and dysfunction. and promises breakthroughs in deciphering immune responses and creating innovative immune-based treatments.

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