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RNA-seq of Monocyte-derived Macrophages and Hepatic Stellate Cell Activation after 72hr

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE228088 | GEO | 2024/03/20

REPOSITORIES: GEO

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Hepatic Stellate Cell Activation after 72hr

Project description:Chronic liver diseases as non-alcoholic steatohepatitis (NASH)-induced cirrhosis are characterized by an increasing accumulation of stressed, damaged, or dying hepatocytes. Hepatocyte damage triggers the activation of resident immune cells, such as Kupffer cells (KC), as well as the recruitment of immune cells from the circulation towards areas of inflammation. After infiltration, monocytes differentiate into monocyte-derived macrophages (MoMF) which are functionally distinct from resident KC. We herein aim to compare in vitro signatures of polarized macrophages and activated hepatic stellate cells (HSC) with ex vivo derived disease signatures from human NASH. Secondly, we investigate the effects of the secretome of primary human monocytes, macrophages and NK cells on HSC activation, as in particular monocytes and macrophages have often been linked to liver fibrosis progression. IL-4 and IL-13 treatment induced TGF-β1 secretion by macrophages. However, the supernatant transfer did not induce HSC activation. Interestingly, PMA-activated macrophages showed a strong induction of the fibrosis response genes COL10A1 and CTGF, while supernatant of IL-4/IL-13 treated monocytes induced the upregulation of COL3A1 in HSC. Supernatant of PMA-activated NK cells had the strongest effect on COL10A1 induction in HSC, while IL-15 stimulated NK cells reduced the expression of COL1A1 and CTGF. These data indicate that other factors, aside the well-known cytokines and chemokines, are potentially stronger contributors to activation of HSCs and induction of a fibrotic response, indicating a more diverse and complex role of monocytes, macrophages and NK cells in liver fibrosis progression.

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RNA-seq of Monocyte-derived Macrophages and Hepatic Stellate Cell Activation after 72hr

Project description:RNA-seq of Monocyte-derived Macrophages and Hepatic Stellate Cell Activation after 72hr

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