Within the ventral spinal cord there resides a diverse population of interneurons (INs) that play important roles in regulating the activity of motor neurons during locomotion. A screen for novel IN markers has revealed the presence of a previously unknown class of lamina VIII INs that arise at the boundary between dI6 and VO INs. These INs specifically express the transcription factor WT1, which is an important developmental regulator of a number of organ systems. The work proposed here will utilize the restricted expression of WT1 in the spinal cord to characterize this newly identified class of INs, providing insight into their contributions to spinal cord function. Additionally, these INs will be inactivated to directly test their role in locomotor behavior. The proposed studies will provide insight into the spinal cord circuitry controlling locomotor behavior and the developmental processes involved in the generation of functionally distinct spinal cord neurons. The techniques used will include marker expression analysis, dextran fills, pseudorabies virus injections, electrophysiology in reduced spinal cord preparations, gene targeting, allatostatin-mediated silencing of neuronal activity, and behavioral analysis. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Postdoctoral Individual National Research Service Award (F32)
Project #
1F32NS053281-01A1
Application #
7115422
Study Section
Special Emphasis Panel (ZRG1-F02B-B (20))
Program Officer
Talley, Edmund M
Project Start
2006-04-01
Project End
2009-03-31
Budget Start
2006-04-01
Budget End
2007-03-31
Support Year
1
Fiscal Year
2006
Total Cost
$48,796
Indirect Cost
Name
Salk Institute for Biological Studies
Department
Type
DUNS #
078731668
City
La Jolla
State
CA
Country
United States
Zip Code
92037