Sorting through the roles of beclin 1 in microglia and neurodegeneration

J Neuroimmune Pharmacol. 2014 Jun;9(3):285-92. doi: 10.1007/s11481-013-9519-8. Epub 2014 Jan 3.

Abstract

Beclin 1 has a well-established role in regulating autophagy, a cellular degradation pathway. Although the yeast ortholog of beclin 1 (Atg6/Vps30) was discovered to also regulate vacuolar protein sorting nearly 30 years ago, the varied functions of beclin 1 in mammalian cells are only beginning to be sorted out. We recently described a role for beclin 1 in regulating recycling of phagocytic receptors in microglia, a function analogous to that of its yeast ortholog. Microglia lacking beclin 1 have a reduced phagocytic capacity, which impairs clearance of amyloid β (Aβ) in a mouse model of Alzheimer's Disease (AD). Here we summarize these findings and discuss the implications for beclin 1-regulated receptor recycling in neurodegenerative disease.

Publication types

  • Review

MeSH terms

  • Animals
  • Apoptosis Regulatory Proteins / physiology*
  • Autophagy / physiology
  • Beclin-1
  • Humans
  • Membrane Proteins / physiology*
  • Microglia / physiology*
  • Neurodegenerative Diseases / metabolism*
  • Neurodegenerative Diseases / pathology
  • Receptors, Immunologic / physiology

Substances

  • Apoptosis Regulatory Proteins
  • BECN1 protein, human
  • Beclin-1
  • Membrane Proteins
  • Receptors, Immunologic
  • phagocytosis receptor