Endospanin 1 determines the balance of leptin-regulated hypothalamic functions

Endospanin 1 (Endo1), a protein encoded, in humans by the same gene than the leptin receptor (ObR), and increased by diet induced obesity, is an important regulator of ObR trafficking and cell surface exposure, determining leptin signaling strength. Defective intracellular trafficking of the leptin receptor to the neuronal plasma membrane has been proposed as a mechanism underlying the development of leptin resistance observed in human obesity. More recently, Endo1 has emerged as a mediator of "selective leptin resistance". The underlying mechanisms of the latter are not completely understood, but the possibility of differential activation of leptin signaling pathways was suggested among others. In this respect, the expression level of Endo1 is crucial for the appropriate balance between different leptin signaling pathways and leptin functions in the hypothalamus, and is likely participating in selective leptin resistance for the control of energy and glucose homeostasis.
Source: Neuroendocrinology - Category: Endocrinology Source Type: research

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