Dynamics of presynaptic protein recruitment induced by local presentation of artificial adhesive contacts.
Dynamics of presynaptic protein recruitment induced by local presentation of artificial adhesive contacts.
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DOI:
10.1002/dneu.22037
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发表时间:
2013-01
影响因子:
3
通讯作者:
Grutter, Peter
中科院分区:
文献类型:
--
作者:
Suarez, Fernando;Thostrup, Peter;Colman, David;Grutter, Peter
Here we introduce a novel approach to induce and observe the formation of presynaptic compartments in axons through a combination of Atomic Force Microscopy (AFM) and fluorescence microscopy. First, we use a poly-D-lysine coated bead attached to an AFM tip to induce the recruitment of two synaptic proteins, bassoon and synaptophysin, and measure their absolute arrival times to the presynaptic department. We find that bassoon arrives before synaptophysin. Second, we observed the formation of very long (several 10s of µm), structured, protein-containing membranous strings as the AFM tip was withdrawn from the axon. It is conceivable that these strings might be a novel mechanism by which new neurites or branch points along existing neurites may be generated in situ.
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