A Novel Thermoregulatory Role for PDE10A in Mouse and Human Adipocytes

Overview

Journal EMBO Mol Med

Specialty Molecular Biology

Date 2016 Jun 2

PMID 27247380

Citations 19

Authors

Mohammed K Hankir

Mathias Kranz

Thorsten Gnad

Juliane Weiner

Sally Wagner

Winnie Deuther-Conrad

Felix Bronisch

Karen Steinhoff

Julia Luthardt

Nora Kloting

Swen Hesse

John P Seibyl

Osama Sabri

John T Heiker

Matthias Bluher

Alexander Pfeifer

Peter Brust

Wiebke K Fenske

Affiliations

Soon will be listed here.

Abstract

Phosphodiesterase type 10A (PDE10A) is highly enriched in striatum and is under evaluation as a drug target for several psychiatric/neurodegenerative diseases. Preclinical studies implicate PDE10A in the regulation of energy homeostasis, but the mechanisms remain unclear. By utilizing small-animal PET/MRI and the novel radioligand [(18)F]-AQ28A, we found marked levels of PDE10A in interscapular brown adipose tissue (BAT) of mice. Pharmacological inactivation of PDE10A with the highly selective inhibitor MP-10 recruited BAT and potentiated thermogenesis in vivo In diet-induced obese mice, chronic administration of MP-10 caused weight loss associated with increased energy expenditure, browning of white adipose tissue, and improved insulin sensitivity. Analysis of human PET data further revealed marked levels of PDE10A in the supraclavicular region where brown/beige adipocytes are clustered in adults. Finally, the inhibition of PDE10A with MP-10 stimulated thermogenic gene expression in human brown adipocytes and induced browning of human white adipocytes. Collectively, our findings highlight a novel thermoregulatory role for PDE10A in mouse and human adipocytes and promote PDE10A inhibitors as promising candidates for the treatment of obesity and diabetes.

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