Stimulation of the Angiotensin II AT2 Receptor is Anti-inflammatory in Human Lipopolysaccharide-Activated Monocytic Cells

Overview

Journal Inflammation

Specialties Allergy & Immunology
Pathology

Date 2015 Mar 12

PMID 25758542

Citations 16

Authors

Mario Menk

Jan Adriaan Graw

Clarissa Von Haefen

Marco Sifringer

David Schwaiberger

Thomas Unger

Ulrike Steckelings

Claudia D Spies

Affiliations

Soon will be listed here.

Abstract

Recently, AT2 receptors have been discovered on the surface of human immunocompetent cells such as monocytes. Data on regulative properties of this receptor on the cellular immune response are poor. We hypothesized that direct stimulation of the AT2 receptor mediates anti-inflammatory responses in these cells. Human monocytic THP-1 and U937 cells were stimulated with lipopolysaccharide (LPS) and the selective AT2 receptor agonist Compound 21 (C21). Expression of pro- and anti-inflammatory cytokines IL-6, IL-10, tumor necrosis factor-α (TNFα), and IL-1β were analyzed on both the transcriptional and the translational level over course of time. Treatment with C21 attenuated the expression of TNFα, IL-6, and IL-10 after LPS challenge in both cell lines in a time- and dose-dependent manner. We conclude that selective AT2 receptor stimulation acts anti-inflammatory in human monocytes. Modulation of cytokine response by AT2 receptor activation might be a beneficial and novel treatment concept in inflammatory conditions.

Citing Articles

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