J 2016

Nitro-oleic acid modulates classical and regulatory activation of macrophages and their involvement in pro-fibrotic responses

AMBROŽOVÁ, Gabriela, Hana VEREŠČÁKOVÁ, Adolf KOUDELKA, Thorben RAVEKES, Tanja K. RUDOLPH et. al.

Základní údaje

Originální název

Nitro-oleic acid modulates classical and regulatory activation of macrophages and their involvement in pro-fibrotic responses

Autoři

AMBROŽOVÁ, Gabriela (203 Česká republika), Hana VEREŠČÁKOVÁ (203 Česká republika, domácí), Adolf KOUDELKA (203 Česká republika, domácí), Thorben RAVEKES (276 Německo), Tanja K. RUDOLPH (276 Německo), Anna KLINKE (276 Německo), Volker RUDOLPH (276 Německo), Bruce A. FREEMAN (840 Spojené státy), Steven R. WOODCOCK (840 Spojené státy), Lukáš KUBALA (203 Česká republika) a Michaela PEKAROVÁ (703 Slovensko)

Vydání

FREE RADICAL BIOLOGY AND MEDICINE, New York, NY, USA, ELSEVIER SCIENCE INC, 2016, 0891-5849

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

Genetika a molekulární biologie

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 5.606

Kód RIV

RIV/00216224:14310/16:00094207

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000367396600023

Klíčová slova anglicky

Nitro-fatty acids; Nitro-oleic acid; Macrophages; Macrophage functional specialization; Fibrosis; Inflammation

Štítky

Změněno: 11. 5. 2017 18:18, Ing. Andrea Mikešková

Anotace

V originále

Inflammation is an immune response triggered by microbial invasion and/or tissue injury. While acute inflammation is directed toward invading pathogens and injured cells, thus enabling tissue regeneration, chronic inflammation can lead to severe pathologies and tissue dysfunction. These processes are linked with macrophage polarization into specific inflammatory "M1-like" or regulatory "M2-like" subsets. Nitro-fatty acids (NO2-FAs), produced endogenously as byproducts of metabolism and oxidative inflammatory conditions, may be useful for treating diseases associated with dysregulated immune homeostasis. The goal of this study was to characterize the role of nitro-oleic acid (OA-NO2) in regulating the functional specialization of macrophages induced by bacterial lipopolysaccharide or interleukin-4, and to reveal specific signaling mechanisms which can account for OA-NO2-dependent modulation of inflammation and fibrotic responses. Our results show that OA-NO2 inhibits lipopolysaccharide-stimulated production of both pro-inflammatory and immunoregulatory cytokines (including transforming growth factor-beta) and inhibits nitric oxide and superoxide anion production. OA-NO2 also decreases interleukin-4-induced macrophage responses by inhibiting arginase-I expression and transforming growth factor-beta production. These effects are mediated via downregulation of signal transducers and activators of transcription, mitogen-activated protein kinase and nuclear factor-kappa B signaling responses. Finally, OA-NO2 inhibits fibrotic processes in an in vivo model of angiotensin II-induced myocardial fibrosis by attenuating expression of alpha-smooth muscle actin, systemic transforming growth factor-beta levels and infiltration of both "M1-" and "M2-like" macrophage subsets into afflicted tissue. Overall, the electrophilic fatty acid derivative OA-NO2 modulates a broad range of "M1-" and "M2-like" macrophage functions and represents a potential therapeutic approach to target diseases associated with dysregulated macrophage subsets.