Interneurons are critical to higher cortical processing and conversely malfunction of these cells is clinically implicated as a cause of epilepsy, chorea and dyskinesia. Recent work has determined that cortical interneurons are largely or completely derived from the subpallial portion of the telencephalon. Using a novel transplantation approach, we have recently fate mapped the caudal versus the medial ganglionic eminences of the E13.5 mouse brain. While we find that both these regions are sources of cortical interneurons, the laminar distribution, tiling and morphology of cells originating from these 2 eminences are distinct. We have begun to characterize interneurons originating from these 2 eminences on the basis of their evoked firing pattern, immunological markers and morphology. In particular we wish to assess whether the interneurons that are derived from these structures changes as development progresses. In addition, we propose to extend this study by genetically fate mapping whether specific developmental expressed bHLH and homeodomain transcription factors are expressed in progenitors that give rise to specific subclasses of cortical interneurons. This proposal will therefore provide the first comprehensive analysis of the developmental origins of cortical interneuron diversity.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Research Project (R01)
Project #
1R01MH071679-01A1
Application #
6925929
Study Section
Special Emphasis Panel (ZRG1-MDCN-B (02))
Program Officer
Sieber, Beth-Anne
Project Start
2005-04-13
Project End
2010-03-31
Budget Start
2005-04-13
Budget End
2006-03-31
Support Year
1
Fiscal Year
2005
Total Cost
$303,753
Indirect Cost
Name
New York University
Department
Anatomy/Cell Biology
Type
Schools of Medicine
DUNS #
121911077
City
New York
State
NY
Country
United States
Zip Code
10016
Mayer, Christian; Hafemeister, Christoph; Bandler, Rachel C et al. (2018) Developmental diversification of cortical inhibitory interneurons. Nature 555:457-462
Priya, Rashi; Paredes, Mercedes Francisca; Karayannis, Theofanis et al. (2018) Activity Regulates Cell Death within Cortical Interneurons through a Calcineurin-Dependent Mechanism. Cell Rep 22:1695-1709
Wilson, Daniel E; Smith, Gordon B; Jacob, Amanda L et al. (2017) GABAergic Neurons in Ferret Visual Cortex Participate in Functionally Specific Networks. Neuron 93:1058-1065.e4
Quattrocolo, Giulia; Fishell, Gord; Petros, Timothy J (2017) Heterotopic Transplantations Reveal Environmental Influences on Interneuron Diversity and Maturation. Cell Rep 21:721-731
Tuncdemir, Sebnem N; Wamsley, Brie; Stam, Floor J et al. (2016) Early Somatostatin Interneuron Connectivity Mediates the Maturation of Deep Layer Cortical Circuits. Neuron 89:521-35
McKenzie, Melissa; Fishell, Gord (2016) Human brains teach us a surprising lesson. Science 354:38-39
Mayer, Christian; Bandler, Rachel C; Fishell, Gord (2016) Lineage Is a Poor Predictor of Interneuron Positioning within the Forebrain. Neuron 92:45-51
Dimidschstein, Jordane; Chen, Qian; Tremblay, Robin et al. (2016) A viral strategy for targeting and manipulating interneurons across vertebrate species. Nat Neurosci 19:1743-1749
Miyoshi, Goichi; Young, Allison; Petros, Timothy et al. (2015) Prox1 Regulates the Subtype-Specific Development of Caudal Ganglionic Eminence-Derived GABAergic Cortical Interneurons. J Neurosci 35:12869-89
Mayer, Christian; Jaglin, Xavier H; Cobbs, Lucy V et al. (2015) Clonally Related Forebrain Interneurons Disperse Broadly across Both Functional Areas and Structural Boundaries. Neuron 87:989-98

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