The targetable kinase PIM1 drives ALK inhibitor resistance in high-risk neuroblastoma independent of MYCN status

Nat Commun. 2019 Nov 28;10(1):5428. doi: 10.1038/s41467-019-13315-x.

Abstract

Resistance to anaplastic lymphoma kinase (ALK)-targeted therapy in ALK-positive non-small cell lung cancer has been reported, with the majority of acquired resistance mechanisms relying on bypass signaling. To proactively identify resistance mechanisms in ALK-positive neuroblastoma (NB), we herein employ genome-wide CRISPR activation screens of NB cell lines treated with brigatinib or ceritinib, identifying PIM1 as a putative resistance gene, whose high expression is associated with high-risk disease and poor survival. Knockdown of PIM1 sensitizes cells of differing MYCN status to ALK inhibitors, and in patient-derived xenografts of high-risk NB harboring ALK mutations, the combination of the ALK inhibitor ceritinib and PIM1 inhibitor AZD1208 shows significantly enhanced anti-tumor efficacy relative to single agents. These data confirm that PIM1 overexpression decreases sensitivity to ALK inhibitors in NB, and suggests that combined front-line inhibition of ALK and PIM1 is a viable strategy for the treatment of ALK-positive NB independent of MYCN status.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anaplastic Lymphoma Kinase / antagonists & inhibitors*
  • Anaplastic Lymphoma Kinase / genetics
  • Animals
  • Apoptosis / drug effects
  • Biphenyl Compounds / pharmacology
  • Cell Line, Tumor
  • Drug Resistance, Neoplasm / genetics*
  • Gene Knockdown Techniques
  • Humans
  • Mice
  • N-Myc Proto-Oncogene Protein / genetics
  • Neuroblastoma / drug therapy
  • Neuroblastoma / genetics*
  • Organophosphorus Compounds / therapeutic use
  • Protein Kinase Inhibitors / pharmacology
  • Protein Kinase Inhibitors / therapeutic use
  • Proto-Oncogene Proteins c-pim-1 / antagonists & inhibitors
  • Proto-Oncogene Proteins c-pim-1 / genetics*
  • Pyrimidines / pharmacology
  • Pyrimidines / therapeutic use
  • Sulfones / pharmacology
  • Sulfones / therapeutic use
  • Thiazolidines / pharmacology
  • Xenograft Model Antitumor Assays

Substances

  • AZD1208
  • Biphenyl Compounds
  • MYCN protein, human
  • N-Myc Proto-Oncogene Protein
  • Organophosphorus Compounds
  • Protein Kinase Inhibitors
  • Pyrimidines
  • Sulfones
  • Thiazolidines
  • ALK protein, human
  • Anaplastic Lymphoma Kinase
  • PIM1 protein, human
  • Proto-Oncogene Proteins c-pim-1
  • brigatinib
  • ceritinib