Michele Lemons L, Hailey McKillop, Noelia Genao, Michael Francis M
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The extracellular matrix molecule Collagen XVIII/CLE-1 affects neuronal dendritic spines.
The extracellular matrix (ECM) is a rich collection of macromolecules that influences numerous cellular functions; however, its roles at neuronal synapses are not fully understood. Using dendritic spines of Caenorhabditis elegans GABAergic neurons as a model, we found that the ECM component Collagen XVIII/ CLE-1 is localized in close proximity to dendritic spines and is important for their normal development and maintenance. Specific expression of cle-1 in GABAergic neurons partially rescued the reduction in spine number in cle-1 ( cg120 ) mutants . Together, our findings suggest that Collagen XVIII/ CLE-1 regulates dendritic spines, in part through local CLE-1 deposition from GABAergic neurons.
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