Abstract
Reactive gliosis, also known as glial scar formation, is an inflammatory response characterized by the proliferation of microglia and astrocytes as well as astrocytic hypertrophy following injury in the central nervous system (CNS). The glial scar forms a physical and molecular barrier to isolate the injured area from adjacent normal nervous tissue for re-establishing the integrity of the CNS. It prevents the further spread of cellular damage but represents an obstacle to regrowing axons. In this review, we integrated the current findings to elucidate the tightly reciprocal modulation between activated microglia and astrocytes in reactive gliosis and proposed that modification of cellular response to the injury or cellular reprogramming in the glial scar could lead advances in axon regeneration and functional recovery after the CNS injury.
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Abbreviations
- ATP:
-
Adenosine triphosphate
- CD:
-
Cluster of differentiation
- ChABC:
-
Chondroitinase ABC
- CSPGs:
-
Chondroitin sulfate proteoglycans
- CXCL10 C-X-C:
-
motif chemokine 10
- FABP7/BLBP:
-
Fatty acid binding protein 7 brain (aka: brain lipid binding protein)
- FGFR3:
-
Fibroblast growth factor receptor 3
- GFAP:
-
Glial fibrillary acidic protein
- Glast:
-
Glutamate aspartate transporter
- Id3:
-
Inhibitor of DNA-binding/differentiation protein 3
- IFN-γ:
-
Interferon gamma
- IL:
-
Interleukin
- KSPGs:
-
Keratan sulfate proteoglycans
- MHCII:
-
Major histocompatibility complex class II
- NFI A/B:
-
Nuclear factor I protein A and B
- PGE2:
-
Prostaglandin E2
- Sox9:
-
Sex determining region Y-box 9
- TGF-α and TGF-β:
-
Transforming growth factor alpha and beta
- TNF-α:
-
Tumor necrosis factor alpha
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This work was supported by an Institutional Development Award (IDeA) from the NIGMS P20GM103453.
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Gao, Z., Zhu, Q., Zhang, Y. et al. Reciprocal Modulation Between Microglia and Astrocyte in Reactive Gliosis Following the CNS Injury. Mol Neurobiol 48, 690–701 (2013). https://doi.org/10.1007/s12035-013-8460-4
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DOI: https://doi.org/10.1007/s12035-013-8460-4