Abstract:
:Focal epilepsy represents one of the most common chronic CNS diseases. The high incidence of drug resistance, devastating comorbidities, and insufficient responsiveness to surgery pose unmet medical challenges. In the quest of novel, disease-modifying treatment strategies of neuropeptides represent promising candidates. Here, we provide the "proof of concept" that gene therapy by adeno-associated virus (AAV) vector transduction of preprodynorphin into the epileptogenic focus of well-accepted mouse and rat models for temporal lobe epilepsy leads to suppression of seizures over months. The debilitating long-term decline of spatial learning and memory is prevented. In human hippocampal slices obtained from epilepsy surgery, dynorphins suppressed seizure-like activity, suggestive of a high potential for clinical translation. AAV-delivered preprodynorphin expression is focally and neuronally restricted and release is dependent on high-frequency stimulation, as it occurs at the onset of seizures. The novel format of "release on demand" dynorphin delivery is viewed as a key to prevent habituation and to minimize the risk of adverse effects, leading to long-term suppression of seizures and of their devastating sequel.
journal_name
EMBO Mol Medjournal_title
EMBO molecular medicineauthors
Agostinho AS,Mietzsch M,Zangrandi L,Kmiec I,Mutti A,Kraus L,Fidzinski P,Schneider UC,Holtkamp M,Heilbronn R,Schwarzer Cdoi
10.15252/emmm.201809963subject
Has Abstractpub_date
2019-10-01 00:00:00pages
e9963issue
10eissn
1757-4676issn
1757-4684journal_volume
11pub_type
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