Role of metabolic programming in the modulation of microglia phagocytosis by lipids
1INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France; University Bordeaux, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux 33076, France.
Abstract:
Microglia phagocytosis is an essential process to maintain lifelong brain homeostasis and clear potential toxic factors from the neuropil. Microglia can engulf cells or part of cells through the expression of specific receptors at their surface and activation of downstream signaling pathways to engulf material. Microglia phagocytosis is finely regulated and is under the dependence of many factors, including environmental cues such as dietary lipids. Yet, the molecular mechanisms implicated are still largely unknown. The present publication is a 'hypothesis review', assessing the possibility that lipid-mediated modulation of phagocytosis occurs by affecting bioenergetic pathways within microglia. I assess our present knowledge and the elements that allow drawing such hypothesis. I also list some of the important gaps in the literature that need to be filled in. I also consider opportunities for future therapeutic target including nutritional interventions.
Insights
Microglia phagocytosis, crucial for brain health, may be modulated by dietary lipids impacting cellular energy pathways. This review explores lipid-driven mechanisms and therapeutic potential for nutritional interventions.
Area of Science:
- Neuroscience
- Immunology
- Cell Biology
Background:
- Microglia are essential for brain homeostasis, clearing cellular debris via phagocytosis.
- Phagocytosis is regulated by cell surface receptors, signaling pathways, and environmental factors like dietary lipids.
- The precise molecular mechanisms of lipid-mediated microglial phagocytosis remain largely unknown.
Purpose of the Study:
- To hypothesize that lipid-mediated modulation of microglial phagocytosis involves bioenergetic pathways.
- To review current knowledge and identify gaps in understanding lipid effects on microglial function.
- To explore potential therapeutic targets, including nutritional interventions.
Main Methods:
- This publication is a hypothesis review.
- It assesses existing knowledge on microglia, phagocytosis, and lipid metabolism.
- It identifies gaps in the literature and proposes future research directions.
Main Results:
- Dietary lipids may influence microglial phagocytosis by altering cellular bioenergetics.
- Specific molecular mechanisms linking lipids to microglial energy pathways require further investigation.
- Understanding these mechanisms could reveal novel therapeutic strategies.
Conclusions:
- Lipid modulation of microglial phagocytosis via bioenergetic pathways is a plausible hypothesis.
- Further research is needed to elucidate these molecular mechanisms.
- Nutritional interventions targeting microglial bioenergetics represent a promising therapeutic avenue.
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