Abstract :
[en] The axonal microtubules (MTs) support long-distance transport of cargoes that
are dispatched to distinct cellular subcompartments. Among them, mRNAs are
directly transported in membraneless ribonucleoprotein (RNP) granules that,
together with ribosomes, can also hitchhike on fast-moving membrane-bound
organelles for accurate transport along MTs. These organelles serve as platforms
for mRNA translation, thus generating axonal foci of newly synthesized proteins.
Local translation along axons not only supports MT network integrity but also
modulates the processivity and function of molecular motors to allow proper traf-
ficking of cargoes along MTs. Thus, identifying the mechanisms that coordinate
axonal transport with local protein synthesis will shed new light on the processes
underlying axon development and maintenance, whose deregulation often
contribute to neurological disorders.
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