The nuclear receptor LXRα controls the functional specialization of splenic macrophages.

Abstract:

:Macrophages are professional phagocytic cells that orchestrate innate immune responses and have considerable phenotypic diversity at different anatomical locations. However, the mechanisms that control the heterogeneity of tissue macrophages are not well characterized. Here we found that the nuclear receptor LXRα was essential for the differentiation of macrophages in the marginal zone (MZ) of the spleen. LXR-deficient mice were defective in the generation of MZ and metallophilic macrophages, which resulted in abnormal responses to blood-borne antigens. Myeloid-specific expression of LXRα or adoptive transfer of wild-type monocytes restored the MZ microenvironment in LXRα-deficient mice. Our results demonstrate that signaling via LXRα in myeloid cells is crucial for the generation of splenic MZ macrophages and identify an unprecedented role for a nuclear receptor in the generation of specialized macrophage subsets.

journal_name

Nat Immunol

journal_title

Nature immunology

authors

A-Gonzalez N,Guillen JA,Gallardo G,Diaz M,de la Rosa JV,Hernandez IH,Casanova-Acebes M,Lopez F,Tabraue C,Beceiro S,Hong C,Lara PC,Andujar M,Arai S,Miyazaki T,Li S,Corbi AL,Tontonoz P,Hidalgo A,Castrillo A

doi

10.1038/ni.2622

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

831-9

issue

8

eissn

1529-2908

issn

1529-2916

pii

ni.2622

journal_volume

14

pub_type

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