Related Experiment Video
Updated: Oct 21, 2026

Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
Published on: January 4, 2018
The IKC-leptin axis functions as a molecular bridge between neurodevelopment and endocrine signaling
Elena Forzisi1, Anika Gaur1, Aniket Gaur1
1Department of Neuroscience and Cell Biology Robert Wood Johnson Medical School Rutgers University, 683 Hoes Ln. West, Piscataway, NJ 08854, USA.
Abstract:
Kcnb1-null mice exhibit hypoleptinemia, disrupted Kcnb1-integrin-K+ channel complex (IKC) interactions with the leptin receptor (LepR) in proopiomelanocortin neurons, and broad neurodevelopmental and cognitive abnormalities. Because leptin is neurotrophic and IKC-LepR assemblies are present in neocortex, we tested whether leptin modifies these phenotypes. Early-life leptin supplementation partially improved behavioral and cognitive deficits and more strongly corrected anatomical and neuronal abnormalities. In null cortical neurons, leptin normalized dendritic overgrowth and F-actin dynamics through LepR- and integrin-dependent mechanisms. WT animals and neurons showed modest leptin responses; however, integrin manipulation unmasked leptin sensitivity, whereas LepR blockade induced null-like defects without exogenous leptin. These findings support a dual-mode model in which LepR signaling is regulated by both ligand availability and IKC-dependent mechanisms, identifying IKC-LepR coupling as a molecular interface linking endocrine signaling to neocortical development.
More Related Videos
Related Concept Videos
Regulation of Food Intake
Chemical Signaling in the Endocrine System
Lipid-soluble hormones, such as steroid hormones, demonstrate an intracellular action. These hormones traverse cell membranes due to their lipid nature. Once inside the target cell, they...
Hedgehog Signaling Pathway
Hedgehog Signaling Pathway
Endocrine Signaling
Endocrine Signaling

