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Published in: Journal of Cancer Research and Clinical Oncology 12/2020

01-12-2020 | Hepatocellular Carcinoma | Original Article – Cancer Research

Senescent hepatic stellate cells caused by deoxycholic acid modulates malignant behavior of hepatocellular carcinoma

Authors: Phuong Thao Nguyen, Keishi Kanno, Quoc Thang Pham, Yuka Kikuchi, Masaki Kakimoto, Tomoki Kobayashi, Yuichiro Otani, Nobusuke Kishikawa, Mutsumi Miyauchi, Koji Arihiro, Masanori Ito, Susumu Tazuma

Published in: Journal of Cancer Research and Clinical Oncology | Issue 12/2020

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Abstract

Purpose

Deoxycholic acid (DCA), a secondary bile acid, is reportedly increased in the serum of patients with nonalcoholic steatohepatitis and animals with experimentally induced hepatocellular carcinoma (HCC), but its contribution to malignant behaviors of HCC has not been precisely clarified. This study aimed to examine the effect of DCA on hepatic stellate cells (HSCs), a major component of nonparenchymal cells in the liver, and its subsequent indirect effect on HCC cells.

Methods

LX2 cells, a human HSC line, were treated with DCA in vitro. Then, HuH7 cells, a human hepatoma cell line, were incubated in conditioned media of DCA-treated LX2 to investigate the subsequent effect focusing on malignant behaviors.

Results

DCA resulted in cellular senescence in LX2 with the decreased cell proliferation via cell cycle arrest at G0/1 phase, together with the induction of senescence-associated secretory phenotype (SASP) factors. To investigate the influence of SASP factors secreted by HSCs in response to DCA, HCC cells were treated with conditioned media that promoted cell migration and invasion via induction of epithelial mesenchymal transition. These changes were attenuated in the presence of neutralizing antibody against IL8 or TGFβ. Pathological analysis of surgical specimens from HCC patients revealed that senescent HSCs were detected in the stroma surrounding HCC.

Conclusion

Our data suggest an important role of HSC senescence caused by DCA for the malignant biological behaviors of HCC via induction of SASP factors, particularly IL8 and TGFβ.
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Literature
Metadata
Title
Senescent hepatic stellate cells caused by deoxycholic acid modulates malignant behavior of hepatocellular carcinoma
Authors
Phuong Thao Nguyen
Keishi Kanno
Quoc Thang Pham
Yuka Kikuchi
Masaki Kakimoto
Tomoki Kobayashi
Yuichiro Otani
Nobusuke Kishikawa
Mutsumi Miyauchi
Koji Arihiro
Masanori Ito
Susumu Tazuma
Publication date
01-12-2020
Publisher
Springer Berlin Heidelberg
Published in
Journal of Cancer Research and Clinical Oncology / Issue 12/2020
Print ISSN: 0171-5216
Electronic ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-020-03374-9

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