Human neuropeptide Y signal peptide gain-of-function polymorphism is associated with increased body mass index: possible mode of function

Neuropeptide Y (NPY) has been implicated in the control of food intake and energy balance based on many observations in animals. We have studied single nucleotide polymorphisms (SNPs) within the regulatory and coding sequences of the human NPY gene. One variant (1128 T>C), which causes an amino a...

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Veröffentlicht in:Regulatory peptides 2005-04, Vol.127 (1), p.45-53
Hauptverfasser: Ding, Bo, Kull, Björn, Liu, Zhurong, Mottagui-Tabar, Salim, Thonberg, Håkan, Gu, Harvest F., Brookes, Anthony J., Grundemar, Lars, Karlsson, Christina, Hamsten, Anders, Arner, Peter, Östenson, Claes-Göran, Efendic, Suad, Monné, Magnus, von Heijne, Gunnar, Eriksson, Per, Wahlestedt, Claes
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container_end_page 53
container_issue 1
container_start_page 45
container_title Regulatory peptides
container_volume 127
creator Ding, Bo
Kull, Björn
Liu, Zhurong
Mottagui-Tabar, Salim
Thonberg, Håkan
Gu, Harvest F.
Brookes, Anthony J.
Grundemar, Lars
Karlsson, Christina
Hamsten, Anders
Arner, Peter
Östenson, Claes-Göran
Efendic, Suad
Monné, Magnus
von Heijne, Gunnar
Eriksson, Per
Wahlestedt, Claes
description Neuropeptide Y (NPY) has been implicated in the control of food intake and energy balance based on many observations in animals. We have studied single nucleotide polymorphisms (SNPs) within the regulatory and coding sequences of the human NPY gene. One variant (1128 T>C), which causes an amino acid change from leucine to proline at codon 7 in the signal peptide of NPY, was associated with increased body mass index (BMI) in two separate Swedish populations of normal and overweight individuals. In vitro transcription and translation studies indicated the unlikelihood that this signal peptide variation affects the site of cleavage and targeting or uptake of NPY into the endoplasmic reticulum (ER). However, the mutant, and to a lesser extent the wild-type, signal peptide by themselves markedly potentiated NPY-induced food intake, as well as hypothalamic NPY receptor signaling. Our findings in humans strongly indicate that the NPY signaling system is implicated in body weight regulation and suggest a new and unexpected functional role of a signal peptide.
doi_str_mv 10.1016/j.regpep.2004.10.011
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subjects Animals
Association
Biological and medical sciences
Body Mass Index
DNA Mutational Analysis
Dose-Response Relationship, Drug
Eating
Endoplasmic Reticulum - metabolism
Function
Fundamental and applied biological sciences. Psychology
Humans
Male
Medical sciences
Metabolic diseases
Middle Aged
Molecular Sequence Data
Neuropeptide Y
Neuropeptide Y - administration & dosage
Neuropeptide Y - metabolism
Neuropeptide Y/administration & dosage/metabolism
Obesity
Polymorphism
Polymorphism, Genetic
Protein Binding
Protein Sorting Signals - genetics
Rats
Rats, Sprague-Dawley
Recombinant Fusion Proteins - metabolism
Signal Transduction - physiology
Sweden
Vertebrates: endocrinology
title Human neuropeptide Y signal peptide gain-of-function polymorphism is associated with increased body mass index: possible mode of function
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