Visceral adipose tissue immune homeostasis is regulated by the crosstalk between adipocytes and dendritic cell subsets

Macdougall, Claire E, Wood, Elizabeth G, Loschko, Jakob, Scagliotti, Valeria, Cassidy, Féaron C, Robinson, Mark E, Feldhahn, Niklas, Castellano, Leandro, Voisin, Mathieu-Benoit, Marelli-Berg, Federica, Gaston-Massuet, Carles, Charalambous, Marika and Longhi, M Paula (2018) Visceral adipose tissue immune homeostasis is regulated by the crosstalk between adipocytes and dendritic cell subsets. Cell metabolism, 27 (3). 588-601.e4. ISSN 1932-7420

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Abstract

Visceral adipose tissue (VAT) has multiple roles in orchestrating whole-body energy homeostasis. In addition, VAT is now considered an immune site harboring an array of innate and adaptive immune cells with a direct role in immune surveillance and host defense. We report that conventional dendritic cells (cDCs) in VAT acquire a tolerogenic phenotype through upregulation of pathways involved in adipocyte differentiation. While activation of the Wnt/β-catenin pathway in cDC1 DCs induces IL-10 production, upregulation of the PPARγ pathway in cDC2 DCs directly suppresses their activation. Combined, they promote an anti-inflammatory milieu in vivo delaying the onset of obesity-induced chronic inflammation and insulin resistance. Under long-term over-nutrition, changes in adipocyte biology curtail β-catenin and PPARγ activation, contributing to VAT inflammation.

Item Type: Article
Schools and Departments: School of Life Sciences > Biochemistry
Depositing User: Leandro Castellano
Date Deposited: 15 Jun 2018 08:44
Last Modified: 02 Jul 2019 15:31
URI: http://sro.sussex.ac.uk/id/eprint/76516

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