Unc5C and DCC act downstream of Ctip2 and Satb2 and contribute to corpus callosum formation

Swathi Srivatsa, Srinivas Parthasarathy, Olga Britanova, Ingo Bormuth, Amber-Lee Donahoo, Susan L. Ackerman, Linda J. Richards and Victor Tarabykin ()
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Swathi Srivatsa: Institute for Cell and Neurobiology, Center for Anatomy, Charité- Universitätsmedizin Berlin
Srinivas Parthasarathy: Institute for Cell and Neurobiology, Center for Anatomy, Charité- Universitätsmedizin Berlin
Olga Britanova: Institute for Cell and Neurobiology, Center for Anatomy, Charité- Universitätsmedizin Berlin
Ingo Bormuth: Institute for Cell and Neurobiology, Center for Anatomy, Charité- Universitätsmedizin Berlin
Amber-Lee Donahoo: Queensland Brain Institute, School of Biomedical Sciences, The University of Queensland
Susan L. Ackerman: Howard Hughes Medical Institute and The Jackson Laboratory
Linda J. Richards: Queensland Brain Institute, School of Biomedical Sciences, The University of Queensland
Victor Tarabykin: Institute for Cell and Neurobiology, Center for Anatomy, Charité- Universitätsmedizin Berlin

Nature Communications, 2014, vol. 5, issue 1, 1-15

Abstract: Abstract The pyramidal neurons of the mammalian neocortex form two major types of long-range connections—corticocortical and cortico-subcortical. The transcription factors Satb2 and Ctip2 are critical regulators of neuronal cell fate that control interhemispheric versus corticofugal connections respectively. Here, we investigate the axon guidance molecules downstream of Satb2 and Ctip2 that establish these connections. We show that the expression of two Netrin1 receptors- DCC and Unc5C is under direct negative regulation by Satb2 and Ctip2, respectively. Further, we show that the Netrin1–Unc5C/DCC interaction is involved in controlling the interhemispherical projection in a subset of early born, deep layer callosal neurons.

Date: 2014
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DOI: 10.1038/ncomms4708

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