NPY Y2 and Y4 receptors selective ligands: promising anti-obesity drugs?
Related Experiment Video
Updated: Jul 10, 2026

Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
Published on: November 15, 2013
1Department of Gastroenterology, Faculty of Medicine, University of Sao Paulo, Ribeirão Preto Campus, Ribeirão Preto, Brazil.
Abstract:
Neuropeptide Y (NPY), a potent orexigen peptide widely produced and distributed in arcuate neurons in the hypothalamus, is a promising candidate for the control of appetitive ingestive behavior. In mammals, the signaling is mediated via at least five different cell surface receptors, denoted as Y(1), Y(2), Y(4), Y(5) and Y(6). Obesity is an important public health problem in the world, particularly in developed societies, and has taken on pandemic proportions. The therapeutics of obesity, including appetite suppressants, has increased 453% over the past decade, although issues concerning safety, efficacy, and little knowledge of the pharmacological activity result in the still modest effects of the anti-obesity drugs presently used. Ligands for Y receptors may be of benefit for the treatment of obesity, and recent findings have indicated a promising role of Y(2) and Y(4) in protecting against diet-induced obesity. This review highlights the supporting evidence therapeutic potential of Y(2) and Y(4) receptors antagonists as additional intervention to treat human obesity.
Insights
Neuropeptide Y (NPY) receptor antagonists, specifically targeting Y(2) and Y(4), show promise for treating obesity. These antagonists may offer a new therapeutic avenue for managing diet-induced obesity and appetite control.
Area of Science:
- Neuroendocrinology
- Pharmacology
- Obesity Research
Background:
- Neuropeptide Y (NPY) is a key orexigenic peptide in hypothalamic arcuate neurons, regulating ingestive behavior.
- Mammalian NPY signaling involves at least five receptors: Y(1), Y(2), Y(4), Y(5), and Y(6).
- Obesity is a global health crisis with increasing prevalence and limited effective pharmacological treatments.
Purpose of the Study:
- To review the therapeutic potential of targeting Neuropeptide Y receptors for obesity treatment.
- To highlight the specific roles of Y(2) and Y(4) receptors in combating diet-induced obesity.
Main Methods:
- Literature review of existing research on Neuropeptide Y receptors and their role in appetite regulation.
- Analysis of evidence supporting the use of Y(2) and Y(4) receptor antagonists in preclinical models of obesity.
Main Results:
- Recent findings suggest Y(2) and Y(4) receptors play a protective role against diet-induced obesity.
- Ligands targeting these receptors demonstrate potential for anti-obesity interventions.
Conclusions:
- Y(2) and Y(4) receptor antagonists represent a promising therapeutic strategy for human obesity.
- Targeting these specific NPY receptors could offer a novel approach to appetite suppression and weight management.
Related Concept Videos
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Glucagon-like Receptor Agonists
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by the...
Transducer Mechanism: Nuclear Receptors
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
G Protein-coupled Receptors
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Regulation of Food Intake
Drug-Receptor Interaction: Agonist
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous ligand's action.
