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A bone to pick with compulsive behavior

Steven E Hyman1

  • 1Department of Neurobiology, Harvard Medical School, Massachusetts Hall, Cambridge, MA 02138, USA. seh@harvard.edu

Cell
|June 1, 2010
PubMed

Insights

Mice with Hoxb8 gene mutations show compulsive grooming. This behavior is caused by Hoxb8 gene deficiency in microglia, brain immune cells, linking immune dysfunction to neuropsychiatric disorders.

Area of Science:

  • Neuroscience
  • Immunology
  • Genetics

Background:

  • Mice with mutations in the Hoxb8 gene display compulsive grooming behavior.
  • The genetic basis and cellular mechanisms underlying this behavior were previously unclear.

Discussion:

  • Chen et al. (2010) identified Hoxb8 deficiency in microglia as the cause of compulsive grooming in mutant mice.
  • Microglia, the brain's resident immune cells, are derived from bone marrow progenitors.
  • This study highlights the critical role of microglia function in regulating specific behaviors.

Key Insights:

  • Hoxb8 gene is essential for normal microglial function.
  • Microglial dysfunction, specifically Hoxb8 deficiency, can lead to compulsive grooming.
  • Establishes a direct link between a specific gene mutation in immune cells and a behavioral phenotype.

Outlook:

  • Further research into Hoxb8 function in microglia may reveal new therapeutic targets for neuropsychiatric disorders.
  • Investigating the broader role of immune cells in brain function and behavior is warranted.
  • Potential for understanding other immune-related neurological conditions.

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