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Dynamic CCN3 expression in the murine CNS does not confer essential roles in myelination or remyelination
- Source :
- Proceedings of the National Academy of Sciences of the United States of America, de la Vega Gallardo, N, Penalva, R, Dittmer, M, Naughton, M, Falconer, J, Moffat, J, de la Fuente, A G, Hombrebueno, J R, Lin, Z, Perbal, B, Ingram, R J, Evergren, E & Fitzgerald, D C 2020, ' Dynamic CCN3 expression in the murine CNS does not confer essential roles in myelination or remyelination ', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 30, pp. 18018 . https://doi.org/10.1073/pnas.1922089117
- Publication Year :
- 2020
-
Abstract
- Significance Remyelination is a natural regenerative process driven by oligodendrocytes that occurs following myelin damage. Understanding this process holds therapeutic value for demyelinating diseases such as multiple sclerosis, in which remyelination can fail. CCN3 is a matricellular protein previously reported to enhance oligodendrocyte progenitor differentiation and myelination in vitro and ex vivo. Here, we show that despite extensive and dynamic expression in the murine CNS in homeostasis and following toxin-induced myelin damage, CCN3 is not required for myelination or remyelination in vivo. Yet, the anatomically distinct expression pattern suggests unidentified roles of CCN3 in a range of neurological processes. This investigation provides a framework for future investigations of the expression and role of CCN proteins in the CNS.<br />CCN3 is a matricellular protein that promotes oligodendrocyte progenitor cell differentiation and myelination in vitro and ex vivo. CCN3 is therefore a candidate of interest in central nervous system (CNS) myelination and remyelination, and we sought to investigate the expression and role of CCN3 during these processes. We found CCN3 to be expressed predominantly by neurons in distinct areas of the CNS, primarily the cerebral cortex, hippocampus, amygdala, suprachiasmatic nuclei, anterior olfactory nuclei, and spinal cord gray matter. CCN3 was transiently up-regulated following demyelination in the brain of cuprizone-fed mice and spinal cord lesions of mice injected with lysolecithin. However, CCN3−/− mice did not exhibit significantly different numbers of oligodendroglia or differentiated oligodendrocytes in the healthy or remyelinating CNS, compared to WT controls. These results suggest that despite robust and dynamic expression in the CNS, CCN3 is not required for efficient myelination or remyelination in the murine CNS in vivo.
- Subjects :
- Central Nervous System
Central nervous system
Hippocampus
Fluorescent Antibody Technique
Biology
Myelin
Mice
Nephroblastoma Overexpressed Protein
medicine
Animals
Remyelination
Myelin Sheath
Oligodendrocyte Precursor Cells
Multidisciplinary
integumentary system
Matricellular protein
Brain
Biological Sciences
Spinal cord
Oligodendrocyte
Disease Models, Animal
Oligodendroglia
myelin
medicine.anatomical_structure
remyelination
Gene Expression Regulation
Spinal Cord
Cerebral cortex
Neuroscience
OPC
oligodendrocyte
Demyelinating Diseases
CCN3
Subjects
Details
- ISSN :
- 10916490
- Volume :
- 117
- Issue :
- 30
- Database :
- OpenAIRE
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Accession number :
- edsair.doi.dedup.....cdf8314c6900a30118d030cdb4b47c14