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2017 ; 4
(ä): 50-61
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Antibody-Directed Glucocorticoid Targeting to CD163 in M2-type Macrophages
Attenuates Fructose-Induced Liver Inflammatory Changes
#MMPMID28344991
Svendsen P
; Graversen JH
; Etzerodt A
; Hager H
; Røge R
; Grønbæk H
; Christensen EI
; Møller HJ
; Vilstrup H
; Moestrup SK
Mol Ther Methods Clin Dev
2017[Mar]; 4
(ä): 50-61
PMID28344991
show ga
Increased consumption of high-caloric carbohydrates contributes substantially to
endemic non-alcoholic fatty liver disease in humans, covering a histological
spectrum from fatty liver to steatohepatitis. Hypercaloric intake and lipogenetic
effects of fructose and endotoxin-driven activation of liver macrophages are
suggested to be essential to disease progression. In the present study, we show
that a low dose of an anti-CD163-IgG-dexamethasone conjugate targeting the
hemoglobin scavenger receptor CD163 in Kupffer cells and other M2-type
macrophages has a profound effect on liver inflammatory changes in rats on a
high-fructose diet. The diet induced severe non-alcoholic steatohepatitis
(NASH)-like changes within a few weeks but the antibody-drug conjugate strongly
reduced inflammation, hepatocyte ballooning, fibrosis, and glycogen deposition.
Non-conjugated dexamethasone or dexamethasone conjugated to a control IgG did not
have this effect but instead exacerbated liver lipid accumulation. The low-dose
anti-CD163-IgG-dexamethasone conjugate displayed no apparent systemic side
effects. In conclusion, macrophage targeting by antibody-directed
anti-inflammatory low-dose glucocorticoid therapy seems to be a promising
approach for safe treatment of fructose-induced liver inflammation.