Professor and Founding Director
My research focuses on biological actions of neuronal growth factors and signaling mechanisms downstream of receptor tyrosine kinases. One project funded by R01 NS031768-19 is directed at functions of the RAF/MEK/ERK signaling cascade in brain development. Mutations in core pathway components as well as in upstream modulators are associated with variety of neurodevelopmental syndromes collectively known as “Rasopathies”. We have established that MEK/ERK signaling is key mediator of gliogenesis both in the PNS (Neuron 69: 91 -105) and in the CNS (Neuron 75: 1035-1050). More recently we have focused on functions of the cascade in developing cortical neurons and are finding important layer-specific regulation of neuronal morphology and physiology. Our findings have implications for understanding mechanisms of cognitive dysfunction in “Rasopathy” patients and potentially for developing new treatments.
A second project funded by R01 NS050968-09 is focused on functions of GSK-3 in cortical development. GSK-3 is a key hub in multiple signaling cascades including growth factor/RTK and Wnt/β-catenin. GSK-3 is a target of the drug, lithium, used in the treatment of bipolar disorders, and some of the effects of DISC1 (Disrupted in Schizophrenia -1 ) are thought to be mediated by GSK-3. In mouse genetic experiments we have established the GSK-3 is key regulator of radial progenitor self-renewal and neurogenesis (Nature Neurosci. 12:1390). We are now exploring biological functions of GSK-3 in developing cortical neurons.
Guo X, Snider WD, Chen B (2016). GSK3β regulates AKT-induced central nervous system axon regeneration via an elF2B -dependent, mTORC1-independent pathway. elife 5: e11903.
Xing L, Larsen RS, Bjorklund GR, Li X, Wu Y, Philpot BD, Snider WD, Newbern JM (2016). Layer specific and general requirements for ERK/MAPK signaling in the developing neocortex. elife 5: e11123.
Yi JJ, Berrios J, Newbern JM, Snider WD, Philpot BD, Hahn KM, Zylka MJ (2015). An Autism-Linked Mutation Disables Phosphorylation Control of UBE3A. Cell 162(4): 795-807.
Xing L, Li X, Snider WD (2015). "Rasopathic" astrocytes constrain neural plasticity. Science 348: 636-637.
Yi JJ, Berrios J, Newbern JM, Snider WD, Philpot BD, Hahn KM, Zylka MJ (2015) An autism-linked mutation disables phosphorylation control of UBE3A. Cell 162: 795-807.
Ohata S, Nakatani J, Herranz-Pérez V, Cheng J, Belinson H, Inubushi T, Snider WD, García-Verdugo JM, Wynshaw-Boris A, Álvarez-Buylla A (2014). Loss of Dishevelleds disrupts planar polarity in ependymal motile cilia and results in hydrocephalus. Neuron 83: 558-571.
Morgan-Smith M, Wu Y, Zhu X, Pringle J, Snider WD (2014). GSK-3 signaling in developing cortical neurons is essential for radial migration and dendritic orientation. eLife 2014;3:e02663
Li X, Newbern JM, Wu Y, Morgan-Smith M, Zhong J, Charron J, and Snider WD (2012). MEK is a key regulator of gliogenesis in the developing brain. Neuron 75: 1035-1050 (with accompanying Preview). PMID: 22998872
Newbern JM and Snider WD. (2012) Bers-ERK Schwann cells coordinate nerve regeneration. Neuron 73: 623 – 626. PMID: 22365537
Newbern J, Li X, Shoemaker S, Zhou J, Zhong J, Wu Y, Bonder D, Hollenback S, Coppola G, Geschwind D, Landreth G, Snider WD. (2011) Specific functions for ERK/MAPK signaling during PNS development. Neuron 69: 91 -105 (selected by Faculty of 1000, Must Read, FFa 10). PMID: 21220101
Office: (919) 843-8623
Lab: (919) 843-8624