Nature Communications (Aug 2020)

Blockade of the AHR restricts a Treg-macrophage suppressive axis induced by L-Kynurenine

  • Luis Felipe Campesato,
  • Sadna Budhu,
  • Jeremy Tchaicha,
  • Chien-Huan Weng,
  • Mathieu Gigoux,
  • Ivan Jose Cohen,
  • David Redmond,
  • Levi Mangarin,
  • Stephane Pourpe,
  • Cailian Liu,
  • Roberta Zappasodi,
  • Dmitriy Zamarin,
  • Jill Cavanaugh,
  • Alfredo C. Castro,
  • Mark G. Manfredi,
  • Karen McGovern,
  • Taha Merghoub,
  • Jedd D. Wolchok

DOI
https://doi.org/10.1038/s41467-020-17750-z
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 11

Abstract

Read online

The tryptophan metabolite kynurenine is an endogenous ligand of the aryl hydrocarbon receptor (AHR). Here, the authors show that AHR targeting in IDO/TDO-expressing tumours counteracts a regulatory T cell/macrophage suppressive axis and synergizes with immune checkpoint blockade to hinder tumour growth.