Human translatability of the GAN diet-induced obese mouse model of non-alcoholic steatohepatitis.

Abstract:

BACKGROUND:Animal models of non-alcoholic steatohepatitis (NASH) are important tools in preclinical research and drug discovery. Gubra-Amylin NASH (GAN) diet-induced obese (DIO) mice represent a model of fibrosing NASH. The present study directly assessed the clinical translatability of the model by head-to-head comparison of liver biopsy histological and transcriptome changes in GAN DIO-NASH mouse and human NASH patients. METHODS:C57Bl/6 J mice were fed chow or the GAN diet rich in saturated fat (40%), fructose (22%) and cholesterol (2%) for ≥38 weeks. Metabolic parameters as well as plasma and liver biomarkers were assessed. Liver biopsy histology and transcriptome signatures were compared to samples from human lean individuals and patients diagnosed with NASH. RESULTS:Liver lesions in GAN DIO-NASH mice showed similar morphological characteristics compared to the NASH patient validation set, including macrosteatosis, lobular inflammation, hepatocyte ballooning degeneration and periportal/perisinusoidal fibrosis. Histomorphometric analysis indicated comparable increases in markers of hepatic lipid accumulation, inflammation and collagen deposition in GAN DIO-NASH mice and NASH patient samples. Liver biopsies from GAN DIO-NASH mice and NASH patients showed comparable dynamics in several gene expression pathways involved in NASH pathogenesis. Consistent with the clinical features of NASH, GAN DIO-NASH mice demonstrated key components of the metabolic syndrome, including obesity and impaired glucose tolerance. CONCLUSIONS:The GAN DIO-NASH mouse model demonstrates good clinical translatability with respect to the histopathological, transcriptional and metabolic aspects of the human disease, highlighting the suitability of the GAN DIO-NASH mouse model for identifying therapeutic targets and characterizing novel drug therapies for NASH.

journal_name

BMC Gastroenterol

journal_title

BMC gastroenterology

authors

Hansen HH,Ægidius HM,Oró D,Evers SS,Heebøll S,Eriksen PL,Thomsen KL,Bengtsson A,Veidal SS,Feigh M,Suppli MP,Knop FK,Grønbæk H,Miranda D,Trevaskis JL,Vrang N,Jelsing J,Rigbolt KTG

doi

10.1186/s12876-020-01356-2

subject

Has Abstract

pub_date

2020-07-06 00:00:00

pages

210

issue

1

issn

1471-230X

pii

10.1186/s12876-020-01356-2

journal_volume

20

pub_type

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