TIM-3 blockade in diffuse intrinsic pontine glioma models promotes tumor regression and antitumor immune memory

Iker Ausejo-Mauleon, Sara Labiano, Daniel de la Nava, Virginia Laspidea, Marta Zalacain, Lucía Marrodán, Marc García-Moure, Marisol González-Huarriz, Irati Hervás-Corpión, Laasya Dhandapani, Silvestre Vicent, Maria Collantes, Iván Peñuelas, Oren J. Becher, Mariella G. Filbin, Li Jiang, Jenna Labelle, Carlos A.O. de Biagi-Junior, Javad Nazarian, Sandra LaternserTimothy N. Phoenix, Jasper van der Lugt, Mariette Kranendonk, Raoull Hoogendijk, Sabine Mueller, Carlos De Andrea, Ana C. Anderson, Elizabeth Guruceaga, Carl Koschmann, Viveka Nand Yadav, Jaime Gállego Pérez-Larraya, Ana Patiño-García, Fernando Pastor, Marta M. Alonso

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Diffuse intrinsic pontine glioma (DIPG) is an aggressive brain stem tumor and the leading cause of pediatric cancer-related death. To date, these tumors remain incurable, underscoring the need for efficacious therapies. In this study, we demonstrate that the immune checkpoint TIM-3 (HAVCR2) is highly expressed in both tumor cells and microenvironmental cells, mainly microglia and macrophages, in DIPG. We show that inhibition of TIM-3 in syngeneic models of DIPG prolongs survival and produces long-term survivors free of disease that harbor immune memory. This antitumor effect is driven by the direct effect of TIM-3 inhibition in tumor cells, the coordinated action of several immune cell populations, and the secretion of chemokines/cytokines that create a proinflammatory tumor microenvironment favoring a potent antitumor immune response. This work uncovers TIM-3 as a bona fide target in DIPG and supports its clinical translation.

Original languageEnglish (US)
Pages (from-to)1911-1926.e8
JournalCancer cell
Volume41
Issue number11
DOIs
StatePublished - Nov 13 2023
Externally publishedYes

Keywords

  • diffuse midline glioma
  • DIPG
  • DMGs
  • immune checkpoint
  • immunotherapy
  • macrophages
  • microglia
  • pediatric brain tumor
  • TIM-3
  • tumor microenvironment

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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