Cited by 202Autophagy in Disease and TherapyHepatocellular Carcinoma Treatment and PrognosisCell death mechanisms and regulation

Mcl-1-dependent activation of Beclin 1 mediates autophagic cell death induced by sorafenib and SC-59 in hepatocellular carcinoma cells

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Tai, W-T, Shiau, C-W, Chen, H-L, Liu, C-Y, Lin, C-S, Cheng, A-L, Chen, P-J, Chen, K-F·2013·Cell Death & Disease

Abstract

We investigated the molecular mechanisms underlying the effect of sorafenib and SC-59, a novel sorafenib derivative, on hepatocellular carcinoma (HCC). Sorafenib activated autophagy in a dose- and time-dependent manner in the HCC cell lines PLC5, Sk-Hep1, HepG2 and Hep3B. Sorafenib downregulated phospho-STAT3 (P-STAT3) and subsequently reduced the expression of myeloid cell leukemia-1 (Mcl-1). Inhibition of Mcl-1 by sorafenib resulted in disruption of the Beclin 1-Mcl-1 complex; however, sorafenib did not affect the amount of Beclin 1, suggesting that sorafenib treatment released Beclin 1 from binding with Mcl-1. Silencing of SHP-1 by small interference RNA (siRNA) reduced the effect of sorafenib on P-STAT3 and autophagy. Ectopic expression of Mcl-1 abolished the effect of sorafenib on autophagy. Knockdown of Beclin 1 by siRNA protected the cells from sorafenib-induced autophagy. Moreover, SC-59, a sorafenib derivative, had a more potent effect on cancer cell viability than sorafenib. SC-59 downregulated P-STAT3 and induced autophagy in all tested HCC cell lines. Furthermore, our in vivo data showed that both sorafenib and SC-59 inhibited tumor growth, downregulated P-STAT3, enhanced the activity of SHP-1 and induced autophagy in PLC5 tumors, suggesting that sorafenib and SC-59 activate autophagy in HCC. In conclusion, sorafenib and SC-59 induce autophagy in HCC through a SHP-1-STAT3-Mcl-1-Beclin 1 pathway.

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Authors
Tai, W.-T., Shiau, C.-W., Chen, H.-L., Liu, C.-Y., Lin, C.-S., Cheng, A.-L., Chen, P.-J., & Chen, K.-F.
Affiliations
  • National Taiwan University Hospital (TW)
  • National Yang Ming University (TW)
  • Taipei Veterans General Hospital (TW)
  • National Taiwan University (TW)
Corresponding author
Chen, K-F
Venue
Cell Death & Disease
Published
2013-02-07
Volume
4
Issue
2
Pages
e485-e485
ISSN
2041-4889 (ISSN-L)
OpenAlex
W2076745136
Cited by
202
References
43
Citations by year
2026: 3 · 2025: 8 · 2024: 15 · 2023: 13 · 2022: 10 · 2021: 20 · 2020: 21 · 2019: 16 · 2018: 24 · 2017: 19 · 2016: 12 · 2015: 17 · 2014: 16 · 2013: 7
FWCI
12.65
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Science Council (100-2325-B-002 -032)
  • National Taiwan University Hospital (NTUH 101P01)
  • National Taiwan University
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Hepatology › Hepatocellular Carcinoma Treatment and Prognosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
sorafenib, hepatocellular carcinoma, autophagy, autophagic cell death, Beclin-1, Mcl-1, STAT3, SHP-1, anticancer agents
MeSH terms
Beclin-1, Sorafenib, Animals, Antineoplastic Agents, Carcinoma, Hepatocellular, Humans, Liver Neoplasms, Membrane Proteins, Mice, Nude, Niacinamide, Phenylurea Compounds, Phosphorylation, Transplantation, Heterologous, Down-Regulation, Apoptosis, Proto-Oncogene Proteins c-bcl-2, RNA Interference, RNA, Small Interfering, Cell Line, Tumor, STAT3 Transcription Factor, Apoptosis Regulatory Proteins, Mice, Protein Tyrosine Phosphatase, Non-Receptor Type 6, Hep G2 Cells, Myeloid Cell Leukemia Sequence 1 Protein

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