A neuropeptide-mediated stretch response links muscle contraction to changes in neurotransmitter release.

A neuropeptide-mediated stretch response links muscle contraction to changes in neurotransmitter release.
复制标题

DOI:
10.1016/j.neuron.2011.04.021
复制
发表时间:
2011-07-14
期刊:
影响因子:
16.2
通讯作者:
Kaplan JM
Kaplan JM
中科院分区:
医学1区
文献类型:
--
作者:
Hu Z;Pym EC;Babu K;Vashlishan Murray AB;Kaplan JM

文献摘要

参考文献

被引文献

相似文献

虽然线虫已被广泛用于研究突触的形成和功能,但对线虫突触的可塑性知之甚少。我们发现,用胆碱酯酶抑制剂敌敌畏进行短暂治疗,可以诱导一种形式的突触前增强,从而使神经肌肉接头(NMJ)的ACh释放增加一倍。敌百威诱导的增强可以通过阻断前神经肽的处理的突变、通过使单一的前神经肽(NLP-12)失活的突变和通过使NLP-12受体(CKR-2)失活的突变来消除。NLP-12的表达仅限于单个拉伸激活的神经元DVA。对YFP标记的NLP-12的分析表明,敌百威刺激DVA分泌NLP-12。破坏DVA机械感受器(Trp-4)的突变减少了敌百威诱导的NLP-12的分泌,并阻断了敌百威诱导的突触增强。缺乏NLP-12或CKR-2的突变体降低了运动速度。总之,这些结果表明,NLP-12介导了一个机械感觉反馈环,将肌肉收缩与突触前释放的变化联系在一起,从而为本体感觉运动控制提供了一种机制。
Although C. elegans has been utilized extensively to study synapse formation and function, relatively little is known about synaptic plasticity in C. elegans. We show that a brief treatment with the cholinesterase inhibitor aldicarb induces a form of presynaptic potentiation whereby ACh release at neuromuscular junctions (NMJs) is doubled. Aldicarb-induced potentiation was eliminated by mutations that block processing of pro-neuropeptides, by mutations inactivating a single pro-neuropeptide (NLP-12), and by those inactivating an NLP-12 receptor (CKR-2). NLP-12 expression is limited to a single stretch-activated neuron, DVA. Analysis of a YFP-tagged NLP-12 suggests that aldicarb stimulates DVA secretion of NLP-12. Mutations disrupting the DVA mechanoreceptor (TRP-4) decreased aldicarb-induced NLP-12 secretion and blocked aldicarb-induced synaptic potentiation. Mutants lacking NLP-12 or CKR-2 have decreased locomotion rates. Collectively, these results suggest that NLP-12 mediates a mechanosensory feedback loop that couples muscle contraction to changes in presynaptic release, thereby providing a mechanism for proprioceptive control of locomotion.
分析突触蛋白鉴定了胰岛素分泌和寿命的调节剂。
DOI: 10.1371/journal.pgen.1000283
发表时间: 2008-11
期刊: PLOS GENETICS
影响因子: 4.5
作者:
Ch'ng, QueeLim;Sieburth, Derek;Kaplan, Joshua M.
通讯作者: Kaplan, Joshua M.
DOI: 10.1023/a:1024126110356
发表时间: 2002-03-01
期刊: JOURNAL OF NEUROCYTOLOGY
影响因子: --
作者:
Kawaguchi, Y;Kondo, S
通讯作者: Kondo, S
DOI: 10.1016/s0896-6273(00)80835-1
发表时间: 1999-09-01
期刊: NEURON
影响因子: 16.2
作者:
Nurrish, S;Ségalat, L;Kaplan, JM
通讯作者: Kaplan, JM
DOI: 10.1523/jneurosci.0378-08.2008
发表时间: 2008-07-09
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Dittman JS;Kaplan JM
通讯作者: Kaplan JM
DOI: 10.1016/j.febslet.2007.08.003
发表时间: 2007-09-04
期刊: FEBS LETTERS
影响因子: 3.5
作者:
Husson, Steven J.;Schoofs, Liliane
通讯作者: Schoofs, Liliane