Generic placeholder image

Current Pharmaceutical Design

Editor-in-Chief

ISSN (Print): 1381-6128
ISSN (Online): 1873-4286

Regulation of Gastric Nesfatin-1/NUCB2

Author(s): Ziru Li, Michael Mulholland and Weizhen Zhang

Volume 19, Issue 39, 2013

Page: [6981 - 6985] Pages: 5

DOI: 10.2174/138161281939131127143306

Price: $65

Abstract

Originally identified in the hypothalamus as a satiety factor, recent studies provide evidence that nefatin-1/NUCB2 is a gutbrain peptide with a broader array of actions. Detection of abundant nesfatin-1/NUCB2 in gastric X/A like endocrine cells, which also produce the orexigenic hormone ghrelin, indicates that gastric mucosa may be one of the predominant sources of nesfatin-1/NUCB2. Functional studies have revealed significant effects of nefatin-1 on inhibition of feeding behavior and on glucose homeostasis. These metabolic functions make nesfatin-1/NUCB2 a novel candidate for treatment of obesity and diabetes. However, deficiencies in our understanding of nesfatin-1/NUCB2 receptor pose a significant hurdle for therapies that target its action. Defining novel pathways to alter the production of nesfatin-1/NUCB2 would shift therapeutic focus to gastric targets. A necessary precondition is improved understanding of the mechanisms by which nesfatin-1/NUCB2 is synthesized and secreted by gastric X/A like cells. Recent studies provide evidence that mTOR is a critical regulatory molecule in these endocrine cells and that its activity is linked to the production of ghrelin and nesfatin- 1/NUCB2. These findings suggest that gastric mTOR is involved in the regulation of food intake and overall energy metabolism through modulation of ghrelin and nesfatin-1/NUCB2. In this review, we first summarize current advances in the relationship between organism energy status and nesfatin-1/NUCB2 levels, and then discuss the novel finding on mTOR as the gastric fuel sensor and its role in the regulation of nesfatin-1/NUCB2 expression.

Keywords: Gut, X/A like endocrine cells, nesfatin-1/NUCB2, ghrelin, energy status, fuel sensing, mTOR, obesity.


Rights & Permissions Print Cite
© 2024 Bentham Science Publishers | Privacy Policy