Synaptic cell adhesion molecules

Advances in Experimental Medicine and Biology
Olena Bukalo, Alexander Dityatev

Abstract

During development of the nervous system following axon pathfinding, synaptic connections are established between neurons. Specific cell adhesion molecules (CAMs) accumulate at pre- and postsynaptic sites and trigger synaptic differentiation through interactions with intra- and extracellular scaffolds. These interactions are important to align pre- and postsynaptic transduction machineries and to couple the sites of cell-to-cell adhesion to the cytoskeleton and signaling complexes necessary to accumulate and recycle presynaptic vesicles, components of exo- and endocytic zones, and postsynaptic receptors. In mature brains, CAMs contribute to regulation of synaptic efficacy and plasticity, partially via direct interactions with postsynaptic neurotransmitter receptors and presynaptic voltage-gated ion channels. This chapter is to highlight the major classes of synaptic CAMs, their multiple functions, and the multistage concerted interactions between different CAMs and other components of synapses.

Citations

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