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Pharmacological Inhibition of CCR2/5 Signaling Prevents and Reverses Alcohol‐Induced Liver Damage, Steatosis, and Inflammation in Mice
Author(s) -
Ambade Aditya,
Lowe Patrick,
Kodys Karen,
Catalano Donna,
Gyongyosi Benedek,
Cho Yeonhee,
IrachetaVellve Arvin,
Adejumo Adeyinka,
Saha Banishree,
Calenda Charles,
Mehta Jeeval,
Lefebvre Eric,
Vig Pamela,
Szabo Gyongyi
Publication year - 2019
Publication title -
hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.488
H-Index - 361
eISSN - 1527-3350
pISSN - 0270-9139
DOI - 10.1002/hep.30249
Subject(s) - endocrinology , medicine , steatosis , liver injury , steatohepatitis , fatty liver , chemokine , inflammation , proinflammatory cytokine , ccr2 , chemistry , biology , chemokine receptor , disease
Kupffer cell and macrophage (MØ) activation contributes to steatosis, inflammation, and fibrosis in alcoholic liver disease (ALD). We found increased frequency of MØ, T cells, and expression of C‐C chemokine receptor type 2 ( Ccr2 ) and C‐C chemokine receptor type 5 ( Ccr5 ) in the livers of patients with ALD, and increased circulating chemokines, C‐C chemokine ligand types 2 (CCL2), and C‐C chemokine ligand types 5 (CCL5) in patients with alcoholic hepatitis. We hypothesized that inhibition of CCL2 signaling with the dual CCR2/5 inhibitor, cenicriviroc (CVC), would attenuate ALD. In a mouse model of ALD, liver injury (alanine aminotransferase [ALT]) and steatosis were prevented by CVC whether administered as “prevention” throughout the alcohol feeding or as “treatment” started after the development of ALD. Alcohol‐induced increases in early liver fibrosis markers (sirius red, hydroxyproline, and collagen‐1) were normalized by both modes of CVC administration. We found that prevention and treatment with CVC reversed alcohol‐related increases in liver mRNA and protein expression of tumor necrosis factor (TNF)‐α, interleukin (IL)‐1β, IL‐6, and CCL2. CVC administration regimens prevented the increase in infiltrating MØ (F4/80 lo CD11b hi ) and reduced proinflammatory Ly6C hi MØ in livers of alcohol‐fed mice. CVC increased liver T‐cell numbers and attenuated Il‐2 expression without an effect on CD69 + or CD25 + T‐cell expression. In vitro , CVC inhibited CCL2‐induced increases in hepatocyte fatty acid synthase ( Fasn ) and adipose differentiation‐related protein (Adrp ) , whereas it augmented acyl‐coenzyme A oxidase 1 ( Acox‐1 ), proliferator‐activated receptor gamma co‐activator alpha ( Pgc1α ) and uncoupling protein 2 expression, suggesting mechanisms for attenuated hepatocyte steatosis. We found that CCL2 and CCL5 sensitized hepatocytes to lipopolysaccharide‐induced liver injury (TNF‐α, ALT, and lactate dehydrogenase release). Alcohol feeding induced apoptosis (poly ADP‐ribose polymerase [PARP] and caspase‐3 [CASP‐3] cleavage) and pyroptosis (gasdermin D [GSDMD] cleavage) in livers, and CVC prevented both of these forms of cell death. Conclusion: Together, our data demonstrate preclinical evidence for CCR2/CCR5 inhibition with CVC as a potent intervention to ameliorate alcohol‐induced steatohepatitis and liver damage.