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Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility
Published on: April 13, 2017
Roles of microglia in brain development, tissue maintenance and repair
Mackenzie A Michell-Robinson1, Hanane Touil1, Luke M Healy1
11 Neuroimmunology Unit, Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada.
Abstract:
The emerging roles of microglia are currently being investigated in the healthy and diseased brain with a growing interest in their diverse functions. In recent years, it has been demonstrated that microglia are not only immunocentric, but also neurobiological and can impact neural development and the maintenance of neuronal cell function in both healthy and pathological contexts. In the disease context, there is widespread consensus that microglia are dynamic cells with a potential to contribute to both central nervous system damage and repair. Indeed, a number of studies have found that microenvironmental conditions can selectively modify unique microglia phenotypes and functions. One novel mechanism that has garnered interest involves the regulation of microglial function by microRNAs, which has therapeutic implications such as enhancing microglia-mediated suppression of brain injury and promoting repair following inflammatory injury. Furthermore, recently published articles have identified molecular signatures of myeloid cells, suggesting that microglia are a distinct cell population compared to other cells of myeloid lineage that access the central nervous system under pathological conditions. Thus, new opportunities exist to help distinguish microglia in the brain and permit the study of their unique functions in health and disease.
Insights
Microglia, the brain's immune cells, have diverse roles in neural development and function. Emerging research highlights their dual capacity for both damage and repair in the central nervous system, with therapeutic potential in brain injury.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglia are increasingly recognized for their neurobiological functions beyond immunity.
- Their roles in neural development, neuronal maintenance, and response to central nervous system (CNS) injury are under active investigation.
- Microglia exhibit dynamic phenotypes influenced by their microenvironment, impacting CNS damage and repair.
Purpose of the Study:
- To explore the multifaceted roles of microglia in both healthy and diseased brains.
- To highlight the regulatory mechanisms, such as microRNAs, influencing microglial function.
- To underscore the therapeutic potential of modulating microglial activity for CNS repair.
Main Methods:
- Review of recent scientific literature on microglia.
- Analysis of studies investigating microglial phenotypes and functions in various conditions.
- Examination of research on microRNA regulation of microglia.
- Consideration of molecular signatures differentiating microglia from other myeloid cells.
Main Results:
- Microglia possess significant neurobiological functions impacting neural development and maintenance.
- Microglial functions are dynamically modulated by the microenvironment, influencing CNS damage and repair.
- MicroRNAs represent a novel mechanism for regulating microglial function with therapeutic implications for brain injury.
- Molecular signatures confirm microglia as a distinct CNS myeloid cell population.
Conclusions:
- Microglia play critical roles in brain health and disease, extending beyond their immune functions.
- Understanding microglial plasticity and regulation by factors like microRNAs offers therapeutic avenues for CNS disorders.
- Distinguishing microglia from other myeloid cells is crucial for studying their unique contributions to brain health and pathology.
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