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The role of cDC1s in vivo: CD8 T cell priming through cross-presentation

Derek Theisen1, Kenneth Murphy2

  • 1Department of Pathology and Immunology, Washington University in St. Louis School of Medicine, St. Louis, MO, USA.

F1000Research
|February 11, 2017
PubMed

Insights

Classical dendritic cell subset 1 (cDC1) cells prime CD8 T cell responses via cross-presentation. Understanding these mechanisms requires further study in cDC1s, not just in vitro models, to integrate CD4 T cell help.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Classical dendritic cells (cDC1) are key for initiating CD8 T cell responses through cross-presentation.
  • Current understanding of cross-presentation mechanisms is limited by challenges in studying rare cDC1 cells and reliance on in vitro models.

Purpose of the Study:

  • To review cross-presentation mechanisms, focusing on insights from monocyte- and bone-marrow-derived dendritic cells.
  • To highlight the necessity of future research on cDC1 cells for a comprehensive understanding.
  • To explore the role of cDC1s in integrating CD4 T cell help for CD8 T cell priming.

Main Methods:

  • Review of existing literature on dendritic cell cross-presentation.
  • Analysis of studies utilizing monocyte- and bone-marrow-derived dendritic cells.
  • Discussion of cDC1 cellular functions in antigen processing and presentation.

Main Results:

  • Cross-presentation by cDC1s is crucial for CD8 T cell immunity.
  • In vitro models provide valuable but incomplete insights into cross-presentation.
  • cDC1s can process antigens for both MHC class I and class II presentation.

Conclusions:

  • Further investigation into cDC1 biology is essential to fully elucidate cross-presentation mechanisms.
  • cDC1s serve as a unique cellular platform for integrating CD4 T cell "help" into CD8 T cell priming.
  • Bridging the gap between in vitro findings and cDC1-specific functions is critical for advancing T cell immunology.

Keywords:
Dendritic cellT cell responsemonocyte-derived dendritic cells

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