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Published in: Molecular Brain 1/2016

Open Access 01-12-2016 | Research

Facilitation of axon outgrowth via a Wnt5a-CaMKK-CaMKIα pathway during neuronal polarization

Authors: Shin-ichiro Horigane, Natsumi Ageta-Ishihara, Satoshi Kamijo, Hajime Fujii, Michiko Okamura, Makoto Kinoshita, Sayaka Takemoto-Kimura, Haruhiko Bito

Published in: Molecular Brain | Issue 1/2016

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Abstract

Background

Wnt5a, originally identified as a guidance cue for commissural axons, activates a non-canonical pathway critical for cortical axonal morphogenesis. The molecular signaling cascade underlying this event remains obscure.

Results

Through Ca2+ imaging in acute embryonic cortical slices, we tested if radially migrating cortical excitatory neurons that already bore primitive axons were sensitive to Wnt5a. While Wnt5a only evoked brief Ca2+ transients in immature neurons present in the intermediate zone (IZ), Wnt5a-induced Ca2+ oscillations were sustained in neurons that migrated out to the cortical plate (CP). We wondered whether this early Wnt5a-Ca2+ signaling during neuronal polarization has a morphogenetic consequence. During transition from round to polarized shape, Wnt5a administration to immature cultured cortical neurons specifically promoted axonal, but not dendritic, outgrowth. Pharmacological and genetic inhibition of the CaMKK-CaMKIα pathway abolished Wnt5a-induced axonal elongation, and rescue of CaMKIα in CaMKIα-knockdown neurons restored Wnt5a-mediated axon outgrowth.

Conclusions

This study suggests that Wnt5a activates Ca2+ signaling during a neuronal morphogenetic time window when axon outgrowth is critically facilitated. Furthermore, the CaMKK-CaMKIα cascade is required for the axonal growth effect of Wnt5a during neuronal polarization.
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Literature
2.
go back to reference Gordon MD, Nusse R. Wnt signaling: multiple pathways, multiple receptors, and multiple transcription factors. J Biol Chem. 2006;281:22429–33.PubMedCrossRef Gordon MD, Nusse R. Wnt signaling: multiple pathways, multiple receptors, and multiple transcription factors. J Biol Chem. 2006;281:22429–33.PubMedCrossRef
3.
go back to reference Kikuchi A, Yamamoto H, Sato A. Selective activation mechanisms of Wnt signaling pathways. Trends Cell Biol. 2009;19:119–29.PubMedCrossRef Kikuchi A, Yamamoto H, Sato A. Selective activation mechanisms of Wnt signaling pathways. Trends Cell Biol. 2009;19:119–29.PubMedCrossRef
5.
go back to reference Salinas PC. Wnt signaling in the vertebrate central nervous system: from axon guidance to synaptic function. Cold Spring Harb Perspect Biol. 2012;4:a008003.PubMedPubMedCentralCrossRef Salinas PC. Wnt signaling in the vertebrate central nervous system: from axon guidance to synaptic function. Cold Spring Harb Perspect Biol. 2012;4:a008003.PubMedPubMedCentralCrossRef
6.
go back to reference Kikuchi A, Yamamoto H, Sato A, Matsumoto S. Wnt5a: its signalling, functions and implication in diseases. Acta Physiol (Oxf). 2012;204:17–33.CrossRef Kikuchi A, Yamamoto H, Sato A, Matsumoto S. Wnt5a: its signalling, functions and implication in diseases. Acta Physiol (Oxf). 2012;204:17–33.CrossRef
7.
go back to reference Yoshikawa S, McKinnon RD, Kokel M, Thomas JB. Wnt-mediated axon guidance via the Drosophila Derailed receptor. Nature. 2003;422:583–8.PubMedCrossRef Yoshikawa S, McKinnon RD, Kokel M, Thomas JB. Wnt-mediated axon guidance via the Drosophila Derailed receptor. Nature. 2003;422:583–8.PubMedCrossRef
8.
go back to reference Keeble TR. The Wnt receptor Ryk is required for Wnt5a-mediated axon guidance on the contralateral side of the corpus callosum. J Neurosci. 2006;26:5840–8.PubMedCrossRef Keeble TR. The Wnt receptor Ryk is required for Wnt5a-mediated axon guidance on the contralateral side of the corpus callosum. J Neurosci. 2006;26:5840–8.PubMedCrossRef
9.
go back to reference Li L, Hutchins BI, Kalil K. Wnt5a induces simultaneous cortical axon outgrowth and repulsive axon guidance through distinct signaling mechanisms. J Neurosci. 2009;29:5873–83.PubMedPubMedCentralCrossRef Li L, Hutchins BI, Kalil K. Wnt5a induces simultaneous cortical axon outgrowth and repulsive axon guidance through distinct signaling mechanisms. J Neurosci. 2009;29:5873–83.PubMedPubMedCentralCrossRef
10.
go back to reference Liu Y, Shi J, Lu C-C, Wang Z-B, Lyuksyutova AI, Song X, et al. Ryk-mediated Wnt repulsion regulates posterior-directed growth of corticospinal tract. Nat Neurosci. 2005;8:1151–9.PubMedCrossRef Liu Y, Shi J, Lu C-C, Wang Z-B, Lyuksyutova AI, Song X, et al. Ryk-mediated Wnt repulsion regulates posterior-directed growth of corticospinal tract. Nat Neurosci. 2005;8:1151–9.PubMedCrossRef
11.
go back to reference Hutchins BI, Li L, Kalil K. Wnt/calcium signaling mediates axon growth and guidance in the developing corpus callosum. Dev Neurobiol. 2011;71:269–83.PubMedPubMedCentralCrossRef Hutchins BI, Li L, Kalil K. Wnt/calcium signaling mediates axon growth and guidance in the developing corpus callosum. Dev Neurobiol. 2011;71:269–83.PubMedPubMedCentralCrossRef
12.
go back to reference Li L, Fothergill T, Hutchins BI, Dent EW, Kalil K. Wnt5a evokes cortical axon outgrowth and repulsive guidance by tau mediated reorganization of dynamic microtubules. Dev Neurobiol. 2014;74:797–817.PubMedPubMedCentralCrossRef Li L, Fothergill T, Hutchins BI, Dent EW, Kalil K. Wnt5a evokes cortical axon outgrowth and repulsive guidance by tau mediated reorganization of dynamic microtubules. Dev Neurobiol. 2014;74:797–817.PubMedPubMedCentralCrossRef
13.
go back to reference Bodmer D, Levine-Wilkinson S, Richmond A, Hirsh S, Kuruvilla R. Wnt5a mediates nerve growth factor-dependent axonal branching and growth in developing sympathetic neurons. J Neurosci. 2009;29:7569–81.PubMedPubMedCentralCrossRef Bodmer D, Levine-Wilkinson S, Richmond A, Hirsh S, Kuruvilla R. Wnt5a mediates nerve growth factor-dependent axonal branching and growth in developing sympathetic neurons. J Neurosci. 2009;29:7569–81.PubMedPubMedCentralCrossRef
14.
go back to reference Nairn AC, Greengard P. Purification and characterization of Ca2+/calmodulin-dependent protein kinase I from bovine brain. J Biol Chem. 1987;262:7273–81.PubMed Nairn AC, Greengard P. Purification and characterization of Ca2+/calmodulin-dependent protein kinase I from bovine brain. J Biol Chem. 1987;262:7273–81.PubMed
15.
go back to reference Yokokura H, Terada O, Naito Y, Hidaka H. Isolation and comparison of rat cDNAs encoding Ca2+/calmodulin-dependent protein kinase I isoforms. Biochim Biophys Acta. 1997;1338:8–12.PubMedCrossRef Yokokura H, Terada O, Naito Y, Hidaka H. Isolation and comparison of rat cDNAs encoding Ca2+/calmodulin-dependent protein kinase I isoforms. Biochim Biophys Acta. 1997;1338:8–12.PubMedCrossRef
16.
go back to reference Takemoto-Kimura S, Terai H, Takamoto M, Ohmae S, Kikumura S, Segi E, et al. Molecular cloning and characterization of CLICK-III/CaMKIgamma, a novel membrane-anchored neuronal Ca2+/calmodulin-dependent protein kinase (CaMK). J Biol Chem. 2003;278:18597–605.PubMedCrossRef Takemoto-Kimura S, Terai H, Takamoto M, Ohmae S, Kikumura S, Segi E, et al. Molecular cloning and characterization of CLICK-III/CaMKIgamma, a novel membrane-anchored neuronal Ca2+/calmodulin-dependent protein kinase (CaMK). J Biol Chem. 2003;278:18597–605.PubMedCrossRef
17.
go back to reference Ishikawa Y, Tokumitsu H, Inuzuka H, Murata-Hori M, Hosoya H, Kobayashi R. Identification and characterization of novel components of a Ca2+/calmodulin-dependent protein kinase cascade in HeLa cells. FEBS Lett. 2003;550:57–63.PubMedCrossRef Ishikawa Y, Tokumitsu H, Inuzuka H, Murata-Hori M, Hosoya H, Kobayashi R. Identification and characterization of novel components of a Ca2+/calmodulin-dependent protein kinase cascade in HeLa cells. FEBS Lett. 2003;550:57–63.PubMedCrossRef
18.
go back to reference Soderling TR. The Ca-calmodulin-dependent protein kinase cascade. Trends Biochem Sci. 1999;24:232–6.PubMedCrossRef Soderling TR. The Ca-calmodulin-dependent protein kinase cascade. Trends Biochem Sci. 1999;24:232–6.PubMedCrossRef
19.
go back to reference Bito H, Takemoto-Kimura S. Ca2+/CREB/CBP-dependent gene regulation: a shared mechanism critical in long-term synaptic plasticity and neuronal survival. Cell Calcium. 2003;34:425–30.PubMedCrossRef Bito H, Takemoto-Kimura S. Ca2+/CREB/CBP-dependent gene regulation: a shared mechanism critical in long-term synaptic plasticity and neuronal survival. Cell Calcium. 2003;34:425–30.PubMedCrossRef
20.
go back to reference Takemoto-Kimura S, Suzuki K, Kamijo S, Ageta-Ishihara N, Fujii H, Okuno H, et al. Differential roles for CaM kinases in mediating excitation-morphogenesis coupling during formation and maturation of neuronal circuits. Eur J Neurosci. 2010;32:224–30.PubMedCrossRef Takemoto-Kimura S, Suzuki K, Kamijo S, Ageta-Ishihara N, Fujii H, Okuno H, et al. Differential roles for CaM kinases in mediating excitation-morphogenesis coupling during formation and maturation of neuronal circuits. Eur J Neurosci. 2010;32:224–30.PubMedCrossRef
21.
go back to reference Ageta-Ishihara N, Takemoto-Kimura S, Nonaka M, Adachi-Morishima A, Suzuki K, Kamijo S, et al. Control of cortical axon elongation by a GABA-driven Ca2+/calmodulin-dependent protein kinase cascade. J Neurosci. 2009;29:13720–9.PubMedPubMedCentralCrossRef Ageta-Ishihara N, Takemoto-Kimura S, Nonaka M, Adachi-Morishima A, Suzuki K, Kamijo S, et al. Control of cortical axon elongation by a GABA-driven Ca2+/calmodulin-dependent protein kinase cascade. J Neurosci. 2009;29:13720–9.PubMedPubMedCentralCrossRef
22.
go back to reference Takemoto-Kimura S, Ageta-Ishihara N, Nonaka M, Adachi-Morishima A, Mano T, Okamura M, et al. Regulation of dendritogenesis via a lipid-raft-associated Ca2+/calmodulin-dependent protein kinase CLICK-III/CaMKIgamma. Neuron. 2007;54:755–70.PubMedCrossRef Takemoto-Kimura S, Ageta-Ishihara N, Nonaka M, Adachi-Morishima A, Mano T, Okamura M, et al. Regulation of dendritogenesis via a lipid-raft-associated Ca2+/calmodulin-dependent protein kinase CLICK-III/CaMKIgamma. Neuron. 2007;54:755–70.PubMedCrossRef
23.
go back to reference Hatanaka Y, Namikawa T, Yamauchi K, Kawaguchi Y. Cortical divergent projections in mice originate from two sequentially generated, distinct populations of excitatory cortical neurons with different initial axonal outgrowth characteristics. Cereb Cortex. 2015; in press. Hatanaka Y, Namikawa T, Yamauchi K, Kawaguchi Y. Cortical divergent projections in mice originate from two sequentially generated, distinct populations of excitatory cortical neurons with different initial axonal outgrowth characteristics. Cereb Cortex. 2015; in press.
24.
go back to reference Tabata H, Nakajima K. Efficient in utero gene transfer system to the developing mouse brain using electroporation: visualization of neuronal migration in the developing cortex. Neuroscience. 2001;103:865–72.PubMedCrossRef Tabata H, Nakajima K. Efficient in utero gene transfer system to the developing mouse brain using electroporation: visualization of neuronal migration in the developing cortex. Neuroscience. 2001;103:865–72.PubMedCrossRef
25.
go back to reference Saito T, Nakatsuji N. Efficient gene transfer into the embryonic mouse brain using in vivo electroporation. Dev Biol. 2001;240:237–46.PubMedCrossRef Saito T, Nakatsuji N. Efficient gene transfer into the embryonic mouse brain using in vivo electroporation. Dev Biol. 2001;240:237–46.PubMedCrossRef
26.
go back to reference Wayman GA, Kaech S, Grant WF, Davare M, Impey S, Tokumitsu H, et al. Regulation of axonal extension and growth cone motility by calmodulin-dependent protein kinase I. J Neurosci. 2004;24:3786–94.PubMedCrossRef Wayman GA, Kaech S, Grant WF, Davare M, Impey S, Tokumitsu H, et al. Regulation of axonal extension and growth cone motility by calmodulin-dependent protein kinase I. J Neurosci. 2004;24:3786–94.PubMedCrossRef
27.
go back to reference Schmitt JM, Wayman GA, Nozaki N, Soderling TR. Calcium activation of ERK mediated by calmodulin kinase I. J Biol Chem. 2004;279:24064–72.PubMedCrossRef Schmitt JM, Wayman GA, Nozaki N, Soderling TR. Calcium activation of ERK mediated by calmodulin kinase I. J Biol Chem. 2004;279:24064–72.PubMedCrossRef
28.
go back to reference Uboha NV, Flajolet M, Nairn AC, Picciotto MR. A calcium- and calmodulin-dependent kinase Ialpha/microtubule affinity regulating kinase 2 signaling cascade mediates calcium-dependent neurite outgrowth. J Neurosci. 2007;27:4413–23.PubMedCrossRef Uboha NV, Flajolet M, Nairn AC, Picciotto MR. A calcium- and calmodulin-dependent kinase Ialpha/microtubule affinity regulating kinase 2 signaling cascade mediates calcium-dependent neurite outgrowth. J Neurosci. 2007;27:4413–23.PubMedCrossRef
29.
go back to reference Nakamuta S, Funahashi Y, Namba T, Arimura N, Picciotto MR, Tokumitsu H, et al. Local application of neurotrophins specifies axons through inositol 1,4,5-trisphosphate, calcium, and Ca2+/calmodulin-dependent protein kinases. Sci Signal. 2011;4:ra76.PubMedCrossRef Nakamuta S, Funahashi Y, Namba T, Arimura N, Picciotto MR, Tokumitsu H, et al. Local application of neurotrophins specifies axons through inositol 1,4,5-trisphosphate, calcium, and Ca2+/calmodulin-dependent protein kinases. Sci Signal. 2011;4:ra76.PubMedCrossRef
30.
go back to reference Wayman GA, Impey S, Marks D, Saneyoshi T, Grant WF, Derkach V, et al. Activity-dependent dendritic arborization mediated by CaM-kinase I activation and enhanced CREB-dependent transcription of Wnt-2. Neuron. 2006;50:897–909.PubMedCrossRef Wayman GA, Impey S, Marks D, Saneyoshi T, Grant WF, Derkach V, et al. Activity-dependent dendritic arborization mediated by CaM-kinase I activation and enhanced CREB-dependent transcription of Wnt-2. Neuron. 2006;50:897–909.PubMedCrossRef
31.
go back to reference Saneyoshi T, Wayman G, Fortin D, Davare M, Hoshi N, Nozaki N, et al. Activity-dependent synaptogenesis: regulation by a CaM-kinase kinase/CaM-kinase I/betaPIX signaling complex. Neuron. 2008;57:94–107.PubMedPubMedCentralCrossRef Saneyoshi T, Wayman G, Fortin D, Davare M, Hoshi N, Nozaki N, et al. Activity-dependent synaptogenesis: regulation by a CaM-kinase kinase/CaM-kinase I/betaPIX signaling complex. Neuron. 2008;57:94–107.PubMedPubMedCentralCrossRef
32.
go back to reference Tokumitsu H, Chijiwa T, Hagiwara M, Mizutani A, Terasawa M, Hidaka H. KN-62, 1-[N, O-bis(5-isoquinolinesulfonyl)-N-methyl-L-tyrosyl]-4-phenylpiperazi ne, a specific inhibitor of Ca2+/calmodulin-dependent protein kinase II. J Biol Chem. 1990;265:4315–20.PubMed Tokumitsu H, Chijiwa T, Hagiwara M, Mizutani A, Terasawa M, Hidaka H. KN-62, 1-[N, O-bis(5-isoquinolinesulfonyl)-N-methyl-L-tyrosyl]-4-phenylpiperazi ne, a specific inhibitor of Ca2+/calmodulin-dependent protein kinase II. J Biol Chem. 1990;265:4315–20.PubMed
33.
go back to reference Sumi M, Kiuchi K, Ishikawa T, Ishii A, Hagiwara M, Nagatsu T, et al. The newly synthesized selective Ca2+/calmodulin dependent protein kinase II inhibitor KN-93 reduces dopamine contents in PC12h cells. Biochem Biophys Res Commun. 1991;181:968–75.PubMedCrossRef Sumi M, Kiuchi K, Ishikawa T, Ishii A, Hagiwara M, Nagatsu T, et al. The newly synthesized selective Ca2+/calmodulin dependent protein kinase II inhibitor KN-93 reduces dopamine contents in PC12h cells. Biochem Biophys Res Commun. 1991;181:968–75.PubMedCrossRef
34.
go back to reference Mochizuki H, Ito T, Hidaka H. Purification and characterization of Ca2+/calmodulin-dependent protein kinase V from rat cerebrum. J Biol Chem. 1993;268:9143–7.PubMed Mochizuki H, Ito T, Hidaka H. Purification and characterization of Ca2+/calmodulin-dependent protein kinase V from rat cerebrum. J Biol Chem. 1993;268:9143–7.PubMed
35.
go back to reference Enslen H, Sun P, Brickey D, Soderling S, Klamo E, Soderling T. Characterization of Ca2+/calmodulin-dependent protein kinase IV. Role in transcriptional regulation. J Biol Chem. 1994;269:15520–7.PubMed Enslen H, Sun P, Brickey D, Soderling S, Klamo E, Soderling T. Characterization of Ca2+/calmodulin-dependent protein kinase IV. Role in transcriptional regulation. J Biol Chem. 1994;269:15520–7.PubMed
36.
go back to reference Tokumitsu H, Inuzuka H, Ishikawa Y, Ikeda M, Saji I, Kobayashi. STO-609, a specific inhibitor of the Ca2+/calmodulin-dependent protein kinase kinase. J Biol Chem. 2002;277:15813–8.PubMedCrossRef Tokumitsu H, Inuzuka H, Ishikawa Y, Ikeda M, Saji I, Kobayashi. STO-609, a specific inhibitor of the Ca2+/calmodulin-dependent protein kinase kinase. J Biol Chem. 2002;277:15813–8.PubMedCrossRef
37.
go back to reference Kamata A, Sakagami H, Tokumitsu H, Sanda M, Owada Y, Fukunaga K, et al. Distinct developmental expression of two isoforms of Ca2+/calmodulin-dependent protein kinase kinases and their involvement in hippocampal dendritic formation. Neurosci Lett. 2007;423:143–8.PubMedCrossRef Kamata A, Sakagami H, Tokumitsu H, Sanda M, Owada Y, Fukunaga K, et al. Distinct developmental expression of two isoforms of Ca2+/calmodulin-dependent protein kinase kinases and their involvement in hippocampal dendritic formation. Neurosci Lett. 2007;423:143–8.PubMedCrossRef
38.
go back to reference Tokumitsu H, Inuzuka H, Ishikawa Y, Kobayashi R. A single amino acid difference between alpha and beta Ca2+/calmodulin-dependent protein kinase kinase dictates sensitivity to the specific inhibitor, STO-609. J Biol Chem. 2003;278:10908–13.PubMedCrossRef Tokumitsu H, Inuzuka H, Ishikawa Y, Kobayashi R. A single amino acid difference between alpha and beta Ca2+/calmodulin-dependent protein kinase kinase dictates sensitivity to the specific inhibitor, STO-609. J Biol Chem. 2003;278:10908–13.PubMedCrossRef
39.
go back to reference Fujiwara Y, Hiraoka Y, Fujimoto T, Kanayama N, Magari M, Tokumitsu H. Analysis of distinct roles of CaMKK isoforms using STO-609-resistant mutants in living cells. Biochemistry. 2015;54:3969–77.PubMedCrossRef Fujiwara Y, Hiraoka Y, Fujimoto T, Kanayama N, Magari M, Tokumitsu H. Analysis of distinct roles of CaMKK isoforms using STO-609-resistant mutants in living cells. Biochemistry. 2015;54:3969–77.PubMedCrossRef
40.
go back to reference Boitard M, Bocchi R, Egervari K, Petrenko V, Viale B, Gremaud S, et al. Wnt signaling regulates Multipolar-to-Bipolar transition of migrating neurons in the cerebral cortex. Cell Rep. 2015;10:1349–61.PubMedCrossRef Boitard M, Bocchi R, Egervari K, Petrenko V, Viale B, Gremaud S, et al. Wnt signaling regulates Multipolar-to-Bipolar transition of migrating neurons in the cerebral cortex. Cell Rep. 2015;10:1349–61.PubMedCrossRef
41.
go back to reference Witze ES, Connacher MK, Houel S, Schwartz MP, Morphew MK, Reid L, et al. Wnt5a directs polarized calcium gradients by recruiting cortical endoplasmic reticulum to the cell trailing edge. Dev Cell. 2013;26:645–57.PubMedCrossRef Witze ES, Connacher MK, Houel S, Schwartz MP, Morphew MK, Reid L, et al. Wnt5a directs polarized calcium gradients by recruiting cortical endoplasmic reticulum to the cell trailing edge. Dev Cell. 2013;26:645–57.PubMedCrossRef
42.
go back to reference Cuitino L, Godoy JA, Farías GG, Couve A, Bonansco C, Fuenzalida M, et al. Wnt-5a modulates recycling of functional GABAA receptors on hippocampal neurons. J Neurosci. 2010;30:8411–20.PubMedCrossRef Cuitino L, Godoy JA, Farías GG, Couve A, Bonansco C, Fuenzalida M, et al. Wnt-5a modulates recycling of functional GABAA receptors on hippocampal neurons. J Neurosci. 2010;30:8411–20.PubMedCrossRef
43.
go back to reference Wayman GA, Lee Y-S, Tokumitsu H, Silva AJ, Silva A, Soderling TR. Calmodulin-kinases: modulators of neuronal development and plasticity. Neuron. 2008;59:914–31.PubMedPubMedCentralCrossRef Wayman GA, Lee Y-S, Tokumitsu H, Silva AJ, Silva A, Soderling TR. Calmodulin-kinases: modulators of neuronal development and plasticity. Neuron. 2008;59:914–31.PubMedPubMedCentralCrossRef
44.
go back to reference Namiki S, Sasaki T, Matsuki N, Ikegaya Y. Regional difference in stainability with calcium-sensitive acetoxymethyl-ester probes in mouse brain slices. Int J Neurosci. 2009;119:214–26.PubMedCrossRef Namiki S, Sasaki T, Matsuki N, Ikegaya Y. Regional difference in stainability with calcium-sensitive acetoxymethyl-ester probes in mouse brain slices. Int J Neurosci. 2009;119:214–26.PubMedCrossRef
45.
go back to reference Namiki S, Ikegaya Y. Current application and technology of functional multineuron calcium imaging. Biol Pharm Bull. 2009;32:1–9.PubMedCrossRef Namiki S, Ikegaya Y. Current application and technology of functional multineuron calcium imaging. Biol Pharm Bull. 2009;32:1–9.PubMedCrossRef
46.
go back to reference Ohkura M, Sasaki T, Sadakari J, Gengyo-Ando K, Kagawa-Nagamura Y, Kobayashi C, et al. Genetically encoded green fluorescent Ca2+ indicators with improved detectability for neuronal Ca2+ signals. PLoS One. 2012;7, e51286.PubMedPubMedCentralCrossRef Ohkura M, Sasaki T, Sadakari J, Gengyo-Ando K, Kagawa-Nagamura Y, Kobayashi C, et al. Genetically encoded green fluorescent Ca2+ indicators with improved detectability for neuronal Ca2+ signals. PLoS One. 2012;7, e51286.PubMedPubMedCentralCrossRef
47.
go back to reference Chen Y, Stevens B, Chang J, Milbrandt J, Barres BA, Hell JW. NS21: re-defined and modified supplement B27 for neuronal cultures. J Neurosci Methods. 2008;171:239–47.PubMedPubMedCentralCrossRef Chen Y, Stevens B, Chang J, Milbrandt J, Barres BA, Hell JW. NS21: re-defined and modified supplement B27 for neuronal cultures. J Neurosci Methods. 2008;171:239–47.PubMedPubMedCentralCrossRef
48.
go back to reference Blaeser F, Sanders MJ, Truong N, Ko S, Wu LJ, Wozniak DF, et al. Long-term memory deficits in Pavlovian fear conditioning in Ca2+/calmodulin kinase kinase alpha-deficient mice. Mol Cell Biol. 2006;26:9105–15.PubMedPubMedCentralCrossRef Blaeser F, Sanders MJ, Truong N, Ko S, Wu LJ, Wozniak DF, et al. Long-term memory deficits in Pavlovian fear conditioning in Ca2+/calmodulin kinase kinase alpha-deficient mice. Mol Cell Biol. 2006;26:9105–15.PubMedPubMedCentralCrossRef
49.
go back to reference Peng I-C, Chen Z, Sun W, Li Y-S, Marin TL, Hsu P-H, et al. Glucagon regulates ACC activity in adipocytes through the CAMKKβ/AMPK pathway. Am J Physiol Endocrinol Metab. 2012;302:E1560–8.PubMedPubMedCentralCrossRef Peng I-C, Chen Z, Sun W, Li Y-S, Marin TL, Hsu P-H, et al. Glucagon regulates ACC activity in adipocytes through the CAMKKβ/AMPK pathway. Am J Physiol Endocrinol Metab. 2012;302:E1560–8.PubMedPubMedCentralCrossRef
Metadata
Title
Facilitation of axon outgrowth via a Wnt5a-CaMKK-CaMKIα pathway during neuronal polarization
Authors
Shin-ichiro Horigane
Natsumi Ageta-Ishihara
Satoshi Kamijo
Hajime Fujii
Michiko Okamura
Makoto Kinoshita
Sayaka Takemoto-Kimura
Haruhiko Bito
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Molecular Brain / Issue 1/2016
Electronic ISSN: 1756-6606
DOI
https://doi.org/10.1186/s13041-016-0189-3

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