We report herein the potential of colony-stimulating factor-1 receptor (CSF1R) inhibitors as therapeutic agents in neuroinflammatory diseases, with a focus on Alzheimer's disease (AD). Employing a carefully modified scaffold, -(4-heterocycloalkyl-2-cycloalkylphenyl)-5-methylisoxazole-3-carboxamide, we identify highly selective and potent CSF1R inhibitors─ and . Molecular docking studies shed light on the binding modes of these key compounds within the CSF1R binding site. Remarkably, kinome-wide selectivity assessment underscores the impressive specificity of for CSF-1R. Notably, emerges as a potent CSF-1R inhibitor with favorable cellular activity and minimal cytotoxicity among the synthesized compounds. Demonstrating efficacy in inhibiting CSF1R phosphorylation in microglial cells and successfully mitigating neuroinflammation in an LPS-induced model, establishes itself as a promising antineuroinflammatory agent.
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http://dx.doi.org/10.1021/acs.jmedchem.3c02366 | DOI Listing |
Theranostics
January 2025
Department of Neurology, Tianjin Neurological Institute, Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, International Joint Laboratory of Ocular Diseases, Ministry of Education, Haihe Laboratory of Cell Ecosystem, Laboratory of Post-Neuroinjury Neurorepair and Regeneration in Central Nervous System Tianjin & Ministry of Education, Tianjin Medical University General Hospital, Tianjin 300052, China.
Intracerebral hemorrhage (ICH) is a devastating form of stroke with a lack of effective treatments. Following disease onset, ICH activates microglia and recruits peripheral leukocytes into the perihematomal region to amplify neural injury. Bruton's tyrosine kinase (BTK) controls the proliferation and survival of various myeloid cells and lymphocytes.
View Article and Find Full Text PDFJ Ethnopharmacol
December 2024
Central Laboratory, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. Electronic address:
Ethnopharmacological Relevance: Epimedium Tourn. ex L. is a traditional Chinese medicine used for thousands of years in China to treat forgetfulness.
View Article and Find Full Text PDFNeurooncol Adv
November 2024
Huntsman Cancer Institute, Salt Lake City, UT, USA.
Background: Glioblastoma (GBM) has a median survival of <2 years. Pexidartinib (PLX3397) is a small-molecule inhibitor of CSF1R, KIT, and oncogenic FTL3, which are implicated in GBM treatment resistance. Results from glioma models indicate that combining radiation therapy (RT) and pexidartinib reduces radiation resistance.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Neuroscience, Del Monte Institute for Neuroscience, University of Rochester, Rochester, NY, USA.
Glia
December 2024
Inserm, NeuroDiderot, Université Paris-Cité, Paris, France.
A growing body of evidence highlights the importance of microglia, the resident immune cells of the CNS, and their pro-inflammatory activation in the onset of many neurological diseases. Microglial proliferation, differentiation, and survival are highly dependent on the CSF-1 signaling pathway, which can be pharmacologically modulated by inhibiting its receptor, CSF-1R. Pharmacological inhibition of CSF-1R leads to an almost complete microglial depletion whereas treatment arrest allows for subsequent repopulation.
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