期刊
CURRENT OPINION IN NEUROBIOLOGY
卷 63, 期 -, 页码 87-94出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.conb.2020.03.015
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资金
- N.I.H. [R01NS075233, R01NS11978, R01AG048218, R21AG052404, UG3NS111688]
Slow axonal transport conveys cytosolic and cytoskeletal proteins into axons and synapses at overall velocities that are several orders of magnitude slower than the fast transport of membranous organelles such as vesicles and mitochondria. The phenomenon of slow transport was characterized by in vivo pulse-chase radiolabeling studies done decades ago, and proposed models emphasized an orderly cargomovement, with apparent cohesive transport of multiple proteins and subcellular structures along axons over weeks to months. However, visualization of cytosolic and cytoskeletal cargoes in cultured neurons at much higher temporal and spatial resolution has revealed an unexpected diversity in movement - ranging from a diffusion-like biased motion, to intermittent cargo dynamics and unusual polymerizationbased transport paradigms. This review provides an updated view of slow axonal transport and explores emergent mechanistic themes in this enigmatic rate-class.
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