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dc.contributor.authorSundarajan, Lakshmi
dc.contributor.authorNorris, Megan L.
dc.contributor.authorSchoneich, Sebastian
dc.contributor.authorAckley, Brian D.
dc.contributor.authorLundquist, Erik A.
dc.date.accessioned2017-03-06T22:36:50Z
dc.date.available2017-03-06T22:36:50Z
dc.date.issued2015-08-15
dc.identifier.citationSundararajan, Lakshmi, Megan L. Norris, Sebastian Schöneich, Brian D. Ackley, and Erik A. Lundquist. "The Fat-like Cadherin CDH-4 Acts Cell-non-autonomously in Anteriorâ posterior Neuroblast Migration." Developmental Biology 392.2 (2014): 141-52.en_US
dc.identifier.urihttp://hdl.handle.net/1808/23344
dc.description.abstractDirected migration of neurons is critical in the normal and pathological development of the brain and central nervous system. In C. elegans, the bilateral Q neuroblasts, QR on the right and QL on the left, migrate anteriorly and posteriorly, respectively. Initial protrusion and migration of the Q neuroblasts is autonomously controlled by the transmembrane proteins UNC-40/DCC, PTP-3/LAR, and MIG-21. As QL migrates posteriorly, it encounters and EGL-20/Wnt signal that induces MAB-5/Hox expression that drives QL descendant posterior migration. QR migrates anteriorly away from EGL-20/Wnt and does not activate MAB-5/Hox, resulting in anterior QR descendant migration. A forward genetic screen for new mutations affecting initial Q migrations identified alleles of cdh-4, which caused defects in both QL and QR directional migration similar to unc-40, ptp-3, and mig-21. Previous studies showed that in QL, PTP-3/LAR and MIG-21 act in a pathway in parallel to UNC-40/DCC to drive posterior QL migration. Here we show genetic evidence that CDH-4 acts in the PTP-3/MIG-21 pathway in parallel to UNC-40/DCC to direct posterior QL migration. In QR, the PTP-3/MIG-21 and UNC-40/DCC pathways mutually inhibit each other, allowing anterior QR migration. We report here that CDH-4 acts in both the PTP-3/MIG-21 and UNC-40/DCC pathways in mutual inhibition in QR, and that CDH-4 acts cell-non-autonomously. Interaction of CDH-4 with UNC-40/DCC in QR but not QL represents an inherent left-right asymmetry in the Q cells, the nature of which is not understood. We conclude that CDH-4 might act as a permissive signal for each Q neuroblast to respond differently to anterior-posterior guidance information based upon inherent left-right asymmetries in the Q neuroblasts.en_US
dc.publisherElsevieren_US
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License 3.0 (CC BY-NC-ND 3.0 US), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.titleThe Fat-like Cadherin CDH-4 Acts Cell-Non-Autonomously in Anterior-Posterior Neuroblast Migrationen_US
dc.typeArticleen_US
kusw.kuauthorLundquist, Erik A.
kusw.kudepartmentMolecular Biosciencesen_US
dc.identifier.doi10.1016/j.ydbio.2014.06.009en_US
kusw.oaversionScholarly/refereed, author accepted manuscripten_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccess


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This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License 3.0 (CC BY-NC-ND 3.0 US), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Except where otherwise noted, this item's license is described as: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License 3.0 (CC BY-NC-ND 3.0 US), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.