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Lilian Kisiswa, Clara Erice, Laurent Ferron, Sean Wyatt, Catarina Osório, Annette C Dolphin, Alun M Davies
Tumour necrosis factor receptor 1 (TNFR1)-activated TNFα reverse signalling, in which membrane-integrated TNFα functions as a receptor for TNFR1, enhances axon growth from developing sympathetic neurons and plays a crucial role in establishing sympathetic innervation. Here, we have investigated the link between TNFα reverse signalling and axon growth in cultured sympathetic neurons. TNFR1-activated TNFα reverse signalling promotes Ca2+ influx, and highly selective T-type Ca2+ channel inhibitors, but not pharmacological inhibitors of L-type, N-type and P/Q-type Ca2+ channels, prevented enhanced axon growth...
January 2017: Open Biology
Liberty François-Moutal, Yue Wang, Aubin Moutal, Karissa E Cottier, Ohannes K Melemedjian, Xiaofang Yang, Yuying Wang, Weina Ju, Tally M Largent-Milnes, May Khanna, Todd W Vanderah, Rajesh Khanna
Targeting proteins within the N-type voltage-gated calcium channel (CaV2.2) complex has proven to be an effective strategy for developing novel pain therapeutics. We describe a novel peptide aptamer derived from the collapsin response mediator protein 2 (CRMP2), a CaV2.2-regulatory protein. Addition of a 14-carbon myristate group to the peptide (myr-tat-CBD3) tethered it to the membrane of primary sensory neurons near surface CaV2.2. Pull-down studies demonstrated that myr-tat-CBD3 peptide interfered with the CRMP2-CaV2...
July 2015: Pain
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