Journal
FRONTIERS IN IMMUNOLOGY
Volume 12, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2021.790201
Keywords
phagocytosis; microglia; ischemic stroke; signaling receptors; prognosis
Categories
Funding
- National Natural Science Foundation of China [81971112, 82130036, 81920208017, 81400971, 81801147]
- Natural Science Foundation of Jiangsu Province [BK20191116]
- Jiangsu Province Key Medical Discipline [ZDXKA2016020]
- Key Research and Development Program of Jiangsu Province of China [BE2020620]
- Young Talent Support Program for the China Stroke Association from the China Association for Science and Technology
Ask authors/readers for more resources
Microglia play diverse roles in the pathogenesis of ischemic stroke, with their phagocytic properties being a subject of debate. Understanding the precise mechanisms of microglial phagocytosis after stroke may help in developing regulatory molecules that promote inflammation resolution without harming functional cells.
Microglia are the resident immune cells of the central nervous system that exert diverse roles in the pathogenesis of ischemic stroke. During the past decades, microglial polarization and chemotactic properties have been well-studied, whereas less attention has been paid to phagocytic phenotypes of microglia in stroke. Generally, whether phagocytosis mediated by microglia plays a beneficial or detrimental role in stroke remains controversial, which calls for further investigations. Most researchers are in favor of the former proposal currently since efficient clearance of tissue debris promotes tissue reconstruction and neuronal network reorganization in part. Other scholars propose that excessively activated microglia engulf live or stressed neuronal cells, which results in neurological deficits and brain atrophy. Upon ischemia challenge, the microglia infiltrate injured brain tissue and engulf live/dead neurons, myelin debris, apoptotic cell debris, endothelial cells, and leukocytes. Cell phagocytosis is provoked by the exposure of eat-me signals or the loss of don(')t eat-me signals. We supposed that microglial phagocytosis could be initiated by the specific eat-me signal and its corresponding receptor on the specific cell type under pathological circumstances. In this review, we will summarize phagocytic characterizations of microglia after stroke and the potential receptors responsible for this programmed biological progress. Understanding these questions precisely may help to develop appropriate phagocytic regulatory molecules, which are promoting self-limiting inflammation without damaging functional cells.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available