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@ARTICLE{Jennemann:181227,
author = {R. Jennemann$^*$ and G. Federico$^*$ and D. Mathow$^*$ and
M. Rabionet$^*$ and F. Rampoldi$^*$ and Z. Popovic$^*$ and
M. Volz$^*$ and T. Hielscher$^*$ and R. Sandhoff$^*$ and
H.-J. Gröne$^*$},
title = {{I}nhibition of hepatocellular carcinoma growth by blockade
of glycosphingolipid synthesis.},
journal = {OncoTarget},
volume = {8},
number = {65},
issn = {1949-2553},
address = {[S.l.]},
publisher = {Impact Journals LLC},
reportid = {DKFZ-2022-01875},
pages = {109201 - 109216},
year = {2017},
note = {POF Topic: 317},
abstract = {Hepatocellular carcinoma (HCC) is one of the most frequent
cancers. In vitro studies suggest that growth and response
to therapy of human carcinomas may depend on
glycosphingolipid (GSL) expression. Glucosylceramide
synthase (GCS), encoded by the gene Ugcg, is the basic
enzyme required for the synthesis of GSLs. Gene array
analysis implied that Ugcg is significantly overexpressed in
human HCC as compared to non-tumorous liver tissue.
Therefore we have investigated whether tumor - genesis and -
growth is altered in the absence of GSLs. An endogenous
liver cancer model has been initiated by application of
diethylnitrosamine in mice lacking Ugcg specifically in
hepatocytes. We have now shown that hepatocellular tumor
initiation and growth in mice is significantly inhibited by
hepatic GSL deficiency in vivo. Neither the expression of
cell cycle proteins, such as cyclins and pathways such as
the MAP-kinase/Erk pathway nor the mTOR/Akt pathway as well
as the number of liver infiltrating macrophages and T cells
were essentially changed in tumors lacking GSLs.
Significantly elevated bi-nucleation of atypical
hepatocytes, a feature for impaired cytokinesis, was
detected in tumors of mice lacking liver-specific GSLs. A
reduction of proliferation and restricted growth of tumor
microspheres due to delayed, GSL-dependent cytokinesis,
analogous to the histopathologic phenotype in vivo could be
demonstrated in vitro. GSL synthesis inhibition may thus
constitute a potential therapeutic target for hepatocellular
carcinoma.},
keywords = {cytokinesis (Other) / glycolipid (Other) /
glycosphingolipid (Other) / hepatocellular carcinoma (Other)
/ sphingomyelin (Other)},
cin = {G130 / A411 / C060},
ddc = {610},
cid = {I:(DE-He78)G130-20160331 / I:(DE-He78)A411-20160331 /
I:(DE-He78)C060-20160331},
pnm = {317 - Translational cancer research (POF3-317)},
pid = {G:(DE-HGF)POF3-317},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29312601},
pmc = {pmc:PMC5752514},
doi = {10.18632/oncotarget.22648},
url = {https://inrepo02.dkfz.de/record/181227},
}