Chromatin plasticity predetermines neuronal eligibility for memory trace formation
During development, epigenetic heterogeneity gives rise to different cell types with different functions. By stably instructing the activation and deactivation of genomic loci to catalyze specific signaling cascades, epigenetic mechanisms play a pivotal role in lineage commitment and cellular differentiation. What remains elusive, however, is whether chromatin plasticity plays an equally important role in the development of dynamic functions in fully differentiated cells, such as adult neurons.
One of the most intriguing features of neurons is their capacity for information encoding. Notably, for each new piece of information memorized the brain deploys only a subset of its neurons, implying that even within the same developmentally defined cell type, not all neurons are equally fit for information encoding at any given time.
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