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  • Title: Expression of colony stimulating factor-1 receptor (CSF-1R) by CNS neurons in mice.
    Author: Wang Y, Berezovska O, Fedoroff S.
    Journal: J Neurosci Res; 1999 Sep 01; 57(5):616-32. PubMed ID: 10462686.
    Abstract:
    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.
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