Expression of colony stimulating factor-1 receptor (CSF-1R) by CNS neurons in mice.
We report that neurons in the central nervous system express colony stimulating factor-1 receptor (CSF-1R) mRNA and protein and that the expression has regional specificity. The presence of CSF-1R in neurons was demonstrated by the use of four different types of antibodies to CSF-1R and the presence of CSF-1R mRNA by in situ hybridization using oligonucleotide probe. In the steady state in most areas of the brain, CSF-1R is weakly expressed in only a few neurons. In the cerebellum, brainstem, and spinal cord, however, CSF-1R is expressed constitutively in greater numbers of neurons. After cerebral cortex ischemic injury, neurons in the area next to the ischemic lesion markedly upregulate CSF-1R. It is also upregulated in the contralateral cortex and in many other areas of the brain and spinal cord. We demonstrated that in cultures the ligand CSF-1 binds to its receptor (CSF-1R) in neurons and that reduction of the number of apoptotic neurons and potentiation of neuron survival is CSF-1 dose dependent. We propose that CSF-1/CSF-1R signaling is an important regulatory pathway between neurons, microglia, and astrocytes.
Wang
Y
Y
Department of Anatomy and Cell Biology, College of Medicine, University of Saskatchewan, Saskatoon, Canada.
Berezovska
O
O
Fedoroff
S
S
D000818:Animals; D017209:Apoptosis; D001921:Brain / Q000166:cytology / Q000502:physiology* / Q000503:physiopathology; D002545:Brain Ischemia / Q000473:pathology / Q000503:physiopathology; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D002540:Cerebral Cortex / Q000502:physiology; D004622:Embryo, Mammalian; D005786:Gene Expression Regulation; D006801:Humans; D016173:Macrophage Colony-Stimulating Factor / Q000494:pharmacology*; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D009474:Neurons / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D014176:Protein Biosynthesis / Q000187:drug effects; D012333:RNA, Messenger / Q000235:genetics; D016186:Receptor, Macrophage Colony-Stimulating Factor / Q000096:biosynthesis / Q000235:genetics*; D011994:Recombinant Proteins / Q000494:pharmacology; D013116:Spinal Cord / Q000166:cytology / Q000502:physiology*; D014158:Transcription, Genetic / Q000187:drug effects
D012333:RNA, Messenger; D011994:Recombinant Proteins; D016173:Macrophage Colony-Stimulating Factor; D016186:Receptor, Macrophage Colony-Stimulating Factor