The Immunology Podcast

Ep. 109: “Phagocyte Cell Biology” Featuring Dr. Johnathan Canton

Jul 15, 2025
Dr. Johnathan Canton, an Assistant Professor at the University of Calgary, dives into the fascinating world of phagocyte cell biology. He shares his career journey from studying tropical parasites to exploring dendritic cells and macrophages. The discussion highlights advanced microscopy techniques and the crucial roles of phagocytes in immune responses. Additionally, he reflects on his organic farming venture in Belize, blending his scientific ambitions with personal roots. Expect insights on CAR T cell therapy and chronic inflammation mechanisms that are reshaping immunology!
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INSIGHT

Unique Role of Dendritic Cells

  • Dendritic cells bridge innate and adaptive immunity by uniquely triggering specific T-cell responses.
  • Removing dendritic cells eliminates certain T-cell responses, showing their non-redundant role.
INSIGHT

Cross-Presentation Mechanism Mystery

  • Cross-presentation allows dendritic cells to present external antigens on MHC class I to CD8 T cells.
  • The mechanism is unclear, possibly involving antigen escape from phagosomes to the cytosol or processing within phagosomes.
INSIGHT

Advanced Microscopy Reveals Dendritic Cells

  • Correlative light electron microscopy combines live-cell imaging with detailed electron microscopy to study dendritic cells.
  • This approach reveals nanoscale structures beyond light microscopy's resolution, advancing cell biology understanding.
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