Department of Biochemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
Nat Neurosci. 2010 Jan;13(1):22-4. doi: 10.1038/nn.2459. Epub 2009 Nov 15.
In cultured rat hippocampal neurons, we found that thrombospondin 1 (TSP1) increased the speed of synapse formation in young neurons, but not the final density of synapses in mature neurons. TSP1 interacted with neuroligin 1 (NL1) and application of the NL1 extracellular domain blocked TSP1-induced synaptogenesis. Furthermore, knocking down endogenous NL1 inhibited TSP1's effect. Our results indicate that TSP1 accelerates the speed of synaptogenesis through NL1 in hippocampal neurons.
在培养的大鼠海马神经元中,我们发现血小板反应蛋白 1(TSP1)可增加年轻神经元中突触形成的速度,但不影响成熟神经元中突触的最终密度。TSP1 与神经连接蛋白 1(NL1)相互作用,应用 NL1 的细胞外结构域可阻断 TSP1 诱导的突触发生。此外,敲低内源性 NL1 可抑制 TSP1 的作用。我们的结果表明,TSP1 通过海马神经元中的 NL1 加速突触发生的速度。