Hostname: page-component-8678677fb7-89zkc Total loading time: 0 Render date: 2026-10-18T00:05:26.731Z Has data issue: false hasContentIssue false

Microglia in development: linking brain wiring to brain environment

Published online by Cambridge University Press:  06 July 2012

Rosa C. Paolicelli
Affiliation:
Mouse Biology Unit, European Molecular Biology Laboratory (EMBL), Monterotondo, Italy
Cornelius T. Gross*
Affiliation:
Mouse Biology Unit, European Molecular Biology Laboratory (EMBL), Monterotondo, Italy
*
Correspondence should be addressed to: Cornelius T. Gross, Mouse Biology Unit, European Molecular Biology Laboratory (EMBL), Via Ramarini 32, 00015 Monterotondo, Italy email: gross@embl.it

Abstract

Microglia are enigmatic non-neuronal cells that infiltrate and take up residence in the brain during development and are thought to perform a surveillance function. An established literature has documented how microglia are activated by pathogenic stimuli and how they contribute to and resolve injuries to the brain. However, much less work has been aimed at understanding their function in the uninjured brain. A series of recent in vivo imaging studies shows that microglia in their resting state are highly motile and actively survey their neuronal surroundings. Furthermore, new data suggest that microglia in their resting state are able to phagocytose unwanted synapses and in this way contribute to synaptic pruning and maturation during development. Coupled with their exquisite sensitivity to pathogenic stimuli, these data suggest that microglia form a link that couples changes in brain environment to changes in brain wiring. Here we discuss this hypothesis and propose a model for the role of microglia during development in sculpting brain connectivity.

Information

Type
Reviews
Copyright
Copyright © Cambridge University Press 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable