Allosteric SHP2 inhibitors in cancer: Targeting the intersection of RAS, resistance, and the immune microenvironment

Curr Opin Chem Biol. 2021 Jun:62:1-12. doi: 10.1016/j.cbpa.2020.11.007. Epub 2021 Jan 6.

Abstract

The nonreceptor protein tyrosine phosphatase SHP2 (encoded by PTPN11) integrates growth and differentiation signals from receptor tyrosine kinases (RTKs) into the RAS/mitogen-activated protein kinase (MAPK) cascade. Considered 'undruggable' over three decades, SHP2 is now a potentially druggable target with the advent of allosteric SHP2 inhibitors. These agents hold promise for improving patient outcomes, showing efficacy in preclinical cancer models, where SHP2 is critical for either oncogenic signaling or resistance to current targeted agents. SHP2 inhibition may also produce immunomodulatory effects in certain tumor microenvironment cells to help cultivate antitumor immune responses. The first generation of allosteric SHP2 inhibitors is under clinical evaluation to determine safety, appropriate tolerability management, and antitumor efficacy, investigations that will dictate future clinical applications.

Keywords: Allosteric inhibitors; Drug resistance; Immunotherapy; KRAS G12C; SHP2; SHP2 inhibitors; SHP2 review.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Allosteric Regulation / drug effects
  • Animals
  • Antineoplastic Agents / chemistry*
  • Antineoplastic Agents / immunology
  • Antineoplastic Agents / pharmacology
  • Cell Line, Tumor
  • Drug Resistance, Neoplasm
  • Enzyme Inhibitors / chemistry*
  • Enzyme Inhibitors / immunology
  • Enzyme Inhibitors / pharmacology
  • Humans
  • Immunotherapy
  • Mitogen-Activated Protein Kinases / metabolism*
  • Molecular Docking Simulation
  • Protein Binding
  • Protein Conformation
  • Protein Tyrosine Phosphatase, Non-Receptor Type 11 / antagonists & inhibitors*
  • Receptor Protein-Tyrosine Kinases / metabolism*
  • Signal Transduction
  • Xenograft Model Antitumor Assays
  • ras Proteins / metabolism*

Substances

  • Antineoplastic Agents
  • Enzyme Inhibitors
  • Receptor Protein-Tyrosine Kinases
  • Mitogen-Activated Protein Kinases
  • PTPN11 protein, human
  • Protein Tyrosine Phosphatase, Non-Receptor Type 11
  • ras Proteins