The neuroendocrine system as a model to evaluate experimental gene therapy

Area of Science:

• Neuroscience
• Genetics
• Endocrinology

Background:

• The neuroendocrine system is a promising yet underutilized model for in vivo gene therapy research.
• Rodent models offer valuable platforms for studying gene therapy's effects on neurological and endocrine functions.

Purpose of the Study:

• To review documented studies on in vivo gene therapy implementation in the neuroendocrine system of rodent models.
• To highlight successful gene therapy strategies in hypothalamic regions for various disease models.

Main Methods:

• Stereotactic injection of viral vectors carrying specific genes (e.g., AVP, leptin receptor b, POMC, IGF-I, GDNF) into relevant hypothalamic regions of rodent models.
• Utilized rat models with genetic mutations or age-related neuronal degeneration.

Main Results:

• Restorative gene therapy successfully treated diabetes insipidus in Brattleboro rats and obesity/hyperinsulinemia in Koletsky and Zucker rats.
• Insulin-like Growth Factor-I (IGF-I) gene therapy corrected hyperprolactinemia and restored dopaminergic neurons in aging rats.
• Glial Cell Line-derived Neurotrophic Factor (GDNF) gene delivery induced weight loss in F-344 male rats.

Conclusions:

• In vivo gene therapy is a viable and effective strategy for addressing various neuroendocrine disorders in rodent models.
• Further exploration of gene therapy in neuroendocrine systems holds significant potential for therapeutic advancements.