The Immunology Podcast

Ep. 117: “The Pathogenesis of Viruses and Cancer” Featuring Dr. Matteo Iannacone

Oct 21, 2025
In this episode, Professor Matteo Iannacone, a leading expert in liver immunology from Vita-Salute San Raffaele University, dives into the fascinating interplay between viruses and cancer. He discusses how unique liver architecture affects immune responses, especially in chronic hepatitis B. Matteo details how CD4 T cells license Kupffer cells to restore CD8 T cell function, and he explores the mechanisms behind liver zonation and its influence on immune cell behavior. Plus, he shares a personal note about his passion for jazz piano!
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INSIGHT

FOXP3 Is The Master Regulator

  • Mary Brunkow and Fred Ramsdell mapped the scurfy mutation to FOXP3 and showed it causes fatal lymphoproliferative autoimmunity.
  • FOXP3 proved to be the master regulator of regulatory T cells and mutated in human IPEX patients.
INSIGHT

ZAP-70 Controls Neonatal Treg Fate

  • Age-dependent ZAP-70 expression in thymocytes shapes neonatal tolerance by reducing deletion of self-reactive cells.
  • Low neonatal ZAP-70 lowers calcium signaling and favors diversion of self-reactive thymocytes into the Treg pool.
INSIGHT

Proteotoxicity Drives T Cell Exhaustion

  • Proteotoxic stress, with elevated protein synthesis and aggregation, actively drives T cell exhaustion rather than being a byproduct.
  • AKT-driven elevated translation, not mTOR/PI3K, sustains proteotoxicity and enforces exhaustion phenotypes.
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