Combined microfluidics/protein patterning platform for pharmacological interrogation of axon pathfinding.
Combined microfluidics/protein patterning platform for pharmacological interrogation of axon pathfinding.
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DOI:
10.1039/b922143c
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发表时间:
2010-04-21
期刊:
影响因子:
6.1
通讯作者:
Kam LC
中科院分区:
文献类型:
--
作者:
Shi P;Nedelec S;Wichterle H;Kam LC
This report combines microfabricated, multi-compartment chambers and protein-micropatterned surfaces into a new platform for the study of localized, sub-cellular signaling on axon guidance. We focus on the specific question of local crosstalk between N-cadherin and fibroblast growth factor receptor (FGFR) signaling. Motor neurons differentiated from embryonic stem cells extend axons from one compartment through a microchannel barrier into a second compartment containing patterns of N-cadherin against a background of laminin. N-cadherin was effective in both guiding and accelerating motor axon outgrowth. Selective inhibition of FGF receptor (FGFR) function in the axon but not the cell body reduced the rate of axon outgrowth while not affecting guidance along N-cadherin, indicating a differential role of crosstalk between these pathways in helping axons navigate the complex extracellular environment. This approach is readily applicable to other systems of guidance cues.
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