TREM2/PLCγ2 signalling in immune cells: function, structural insight, and potential therapeutic modulation

Mol Neurodegener. 2021 Apr 6;16(1):22. doi: 10.1186/s13024-021-00436-5.

Abstract

The central role of the resident innate immune cells of the brain (microglia) in neurodegeneration has become clear over the past few years largely through genome-wide association studies (GWAS), and has rapidly become an active area of research. However, a mechanistic understanding (gene to function) has lagged behind. That is now beginning to change, as exemplified by a number of recent exciting and important reports that provide insight into the function of two key gene products - TREM2 (Triggering Receptor Expressed On Myeloid Cells 2) and PLCγ2 (Phospholipase C gamma2) - in microglia, and their role in neurodegenerative disorders. In this review we explore and discuss these recent advances and the opportunities that they may provide for the development of new therapies.

Keywords: Alzheimer’s disease; Immune system; Microglia; Protein networks; Signalling; Therapeutic intervention.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Age of Onset
  • Alzheimer Disease / drug therapy
  • Alzheimer Disease / genetics
  • Alzheimer Disease / immunology*
  • Alzheimer Disease / prevention & control
  • Connective Tissue Cells / metabolism*
  • Humans
  • Lipid Metabolism
  • Lymphocytes / metabolism*
  • Membrane Glycoproteins / chemistry
  • Membrane Glycoproteins / physiology*
  • Microglia / metabolism*
  • Microglia / physiology
  • Models, Molecular
  • Mutation
  • Myeloid Cells / metabolism*
  • Phospholipase C gamma / chemistry
  • Phospholipase C gamma / genetics
  • Phospholipase C gamma / physiology*
  • Protein Conformation
  • Protein Domains
  • Protein Interaction Mapping
  • Receptors, Immunologic / chemistry
  • Receptors, Immunologic / physiology*
  • Sequence Homology, Amino Acid
  • Signal Transduction / physiology*
  • Structure-Activity Relationship

Substances

  • Membrane Glycoproteins
  • Receptors, Immunologic
  • TREM2 protein, human
  • Phospholipase C gamma