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A Pathway Association Study Tool for GWAS Analyses of Metabolic Pathway Information
Published on: July 1, 2020
PPARgamma and metabolism: insights from the study of human genetic variants
1Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK. mg299@mole.bio.cam.ac.uk
Abstract:
Diabetes, obesity, atherosclerosis and cancer are the principal contributors to morbidity and mortality in Western society. Emerging evidence indicates that a nuclear receptor, the peroxisome proliferator-activated receptor gamma (PPARgamma), plays a role in these pathological processes. Furthermore, modulation of receptor action in these diseases may be of therapeutic value, as exemplified by the recent introduction of the thiazolidinediones, a novel class of insulin-sensitizing agent for the treatment of type 2 diabetes mellitus. The availability of such high-affinity ligands has facilitated the study of signalling pathways through which PPARgamma regulates metabolic processes; these analyses have been complemented by the study of human subjects harbouring (naturally occurring) mutations and polymorphisms within the receptor. The latter have provided unique genetic evidence for a link between PPARgamma and mammalian glucose homeostasis, lipid metabolism and regulation of fat mass. This review highlights recent studies which have advanced our understanding of the pivotal role that this receptor plays in metabolism, with particular reference to the consequences of inherited variation in the human receptor gene.
Insights
Peroxisome proliferator-activated receptor gamma (PPARgamma) influences major diseases like diabetes and obesity. Genetic variations in PPARgamma offer insights into metabolic regulation and potential therapeutic targets.
Area of Science:
- Molecular biology
- Metabolic diseases
- Genetics
Background:
- Diabetes, obesity, atherosclerosis, and cancer are leading causes of mortality in Western societies.
- The nuclear receptor peroxisome proliferator-activated receptor gamma (PPARgamma) is implicated in these pathological processes.
- Thiazolidinediones, insulin-sensitizing agents for type 2 diabetes, highlight the therapeutic potential of modulating PPARgamma.
Purpose of the Study:
- To review recent studies on the role of PPARgamma in metabolic processes.
- To explore the therapeutic implications of PPARgamma modulation in metabolic diseases.
- To examine the impact of inherited variations in the human PPARgamma gene on metabolism.
Main Methods:
- Analysis of signaling pathways regulated by PPARgamma using high-affinity ligands.
- Study of human subjects with naturally occurring mutations and polymorphisms in the PPARgamma receptor.
- Review of recent scientific literature on PPARgamma's role in metabolism and disease.
Main Results:
- PPARgamma plays a crucial role in regulating metabolic processes, including glucose homeostasis, lipid metabolism, and fat mass.
- Genetic variations in PPARgamma provide significant evidence linking the receptor to mammalian metabolic regulation.
- Modulation of PPARgamma activity shows therapeutic promise for metabolic disorders.
Conclusions:
- PPARgamma is a pivotal nuclear receptor in regulating mammalian metabolism.
- Understanding inherited variations in PPARgamma is essential for comprehending its role in metabolic health and disease.
- Targeting PPARgamma pathways offers potential therapeutic strategies for major metabolic diseases.
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