Lack of preventive and disease modifying treatments for common disorders of the human nervous system is a glaring unmet medical need critical to the mission of NINDS. The work proposed here represents a novel approach to uncover molecular signaling mechanisms underlying temporal lobe epilepsy (TLE). Work accomplished during the current funding period reveals a pivotal role for the brain-derived neurotrophic factor (BDNF) receptor tyrosine kinase,TrkB, in the development of TLE induced by status epilepticus. TrkB-mediated activation of the effector, phospholipase C?1, is the dominant pathway by which TrkB promotes development of TLE. The objective of the current application is to explore the role of TrkB signaling in the persistence of TLE. To accomplish this objective, we will examine the effect of pharmacological and genetic perturbations of TrkB signaling on epilepsy induced in diverse models of TLE. Successful completion of the work proposed may pave the way to preventive and/or disease modifying therapy of TLE, a common disorder of the human central nervous system.

Public Health Relevance

Lack of effective preventive or disease modifying therapies for common disorders of the human nervous system is a glaring unmet medical need critical to the mission of NINDS. The work proposed here is a novel approach to uncover molecular signaling mechanisms underlying temporal love epilepsy. Such insights may pave the way to preventive and/or disease modifying therapies of temporal lobe epilepsy, a common disorder of the human nervous system.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Project (R01)
Project #
2R01NS056217-13A1
Application #
9729237
Study Section
Clinical Neuroplasticity and Neurotransmitters Study Section (CNNT)
Program Officer
Churn, Severn Borden
Project Start
2006-07-15
Project End
2024-03-31
Budget Start
2019-06-01
Budget End
2020-03-31
Support Year
13
Fiscal Year
2019
Total Cost
Indirect Cost
Name
Duke University
Department
Neurosciences
Type
Schools of Medicine
DUNS #
044387793
City
Durham
State
NC
Country
United States
Zip Code
27705
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Harward, Stephen C; Hedrick, Nathan G; Hall, Charles E et al. (2016) Autocrine BDNF-TrkB signalling within a single dendritic spine. Nature 538:99-103
Puranam, Ram S; He, Xiao Ping; Yao, Lijun et al. (2015) Disruption of Fgf13 causes synaptic excitatory-inhibitory imbalance and genetic epilepsy and febrile seizures plus. J Neurosci 35:8866-81
Gu, Bin; Huang, Yang Zhong; He, Xiao-Ping et al. (2015) A Peptide Uncoupling BDNF Receptor TrkB from Phospholipase C?1 Prevents Epilepsy Induced by Status Epilepticus. Neuron 88:484-91
Helgager, Jeffrey; Huang, Yang Zhong; Mcnamara, James O (2014) Brain-derived neurotrophic factor but not vesicular zinc promotes TrkB activation within mossy fibers of mouse hippocampus in vivo. J Comp Neurol 522:3885-99
He, Xiao Ping; Wen, Renren; McNamara, James O (2014) Impairment of kindling development in phospholipase C?1 heterozygous mice. Epilepsia 55:456-63
Harward, Stephen C; McNamara, James O (2014) Aligning animal models with clinical epilepsy: where to begin? Adv Exp Med Biol 813:243-51
Liu, Gumei; Kotloski, Robert J; McNamara, James O (2014) Antiseizure effects of TrkB kinase inhibition. Epilepsia 55:1264-73
Wang, Hong-Gang; He, Xiao Ping; Li, Qiang et al. (2013) The auxiliary subunit KChIP2 is an essential regulator of homeostatic excitability. J Biol Chem 288:13258-68

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