Novel histone deacetylase inhibitor MPT0G009 induces cell apoptosis and synergistic anticancer activity with tumor necrosis factor-related apoptosis-inducing ligand against human hepatocellular carcinoma

Mei-Chuan Chen, Hui-Hsuan Huang, Chin-Yu Lai, Yi-Jyun Lin, Jing-Ping Liou, Mei-Jung Lai, Yu-Hsuan Li, Che-Ming Teng, Chia-Ron Yang

Research output: Contribution to journalArticle

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Abstract

Hepatocellular carcinoma (HCC) is a frequent cause of cancer-related death; therefore, more effective anticancer therapies for the treatment of HCC are needed. Histone deacetylase (HDAC) inhibitors serve as promising anticancer drugs because they can induce cell growth arrest and apoptosis. We previously reported that 3-[1-(4-methoxybenzenesulfonyl)-2,3-dihydro-1H-indol-5-yl]-N-hydroxyacrylamide (MPT0G009)-a novel 1-arylsulfonyl-5-(N-hydroxyacrylamide)indolines compound-demonstrated potent pan-HDAC inhibition and anti-inflammatory effects. In this study, we evaluated the anti-HCC activity of MPT0G009 in vitro and in vivo. Growth inhibition, apoptosis, and inhibited HDAC activity induced by MPT0G009 were more potent than a marketed HDAC inhibitor SAHA (Vorinostat). Furthermore, MPT0G009-induced apoptosis of Hep3B cells was characterized by an increase in apoptotic (sub-G1) population, loss of mitochondrial membrane potential, activation of caspase cascade, increased levels of pro-apoptotic protein (Bim), and decreased levels of anti-apoptotic proteins (Bcl-2, Bcl-xL, and FLICE-inhibitory protein); the downregulation FLIP by MPT0G009 is mediated through proteasome-mediated degradation and transcriptional suppression. In addition, combinations of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) with lower concentrations (0.1 μM) of MPT0G009 were synergistic in cell growth inhibition and apoptosis in HCC cells. In the in vivo model, MPT0G009 markedly reduced Hep3B xenograft tumor volume, inhibited HDAC activities, and induced apoptosis in the Hep3B xenografts. Our results demonstrate that MPT0G009 is a potential new candidate drug for HCC therapy.

Original languageEnglish
Pages (from-to)402-17
Number of pages16
JournalOncotarget
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 5 2016

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Histone Deacetylase Inhibitors
Hepatocellular Carcinoma
Tumor Necrosis Factor-alpha
Apoptosis
Ligands
Histone Deacetylases
Apoptosis Regulatory Proteins
Heterografts
Growth
CASP8 and FADD-Like Apoptosis Regulating Protein
3-(1-(4-methoxybenzenesulfonyl)-2,3-dihydro-1H-indol-5-yl)-N-hydroxyacrylamide
Mitochondrial Membrane Potential
Proteasome Endopeptidase Complex
Caspases
Tumor Burden
Pharmaceutical Preparations
Anti-Inflammatory Agents
Down-Regulation

Keywords

  • Journal Article
  • Research Support, Non-U.S. Gov't

Cite this

Novel histone deacetylase inhibitor MPT0G009 induces cell apoptosis and synergistic anticancer activity with tumor necrosis factor-related apoptosis-inducing ligand against human hepatocellular carcinoma. / Chen, Mei-Chuan; Huang, Hui-Hsuan; Lai, Chin-Yu; Lin, Yi-Jyun; Liou, Jing-Ping; Lai, Mei-Jung; Li, Yu-Hsuan; Teng, Che-Ming; Yang, Chia-Ron.

In: Oncotarget, Vol. 7, No. 1, 05.01.2016, p. 402-17.

Research output: Contribution to journalArticle

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AU - Teng, Che-Ming

AU - Yang, Chia-Ron

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AB - Hepatocellular carcinoma (HCC) is a frequent cause of cancer-related death; therefore, more effective anticancer therapies for the treatment of HCC are needed. Histone deacetylase (HDAC) inhibitors serve as promising anticancer drugs because they can induce cell growth arrest and apoptosis. We previously reported that 3-[1-(4-methoxybenzenesulfonyl)-2,3-dihydro-1H-indol-5-yl]-N-hydroxyacrylamide (MPT0G009)-a novel 1-arylsulfonyl-5-(N-hydroxyacrylamide)indolines compound-demonstrated potent pan-HDAC inhibition and anti-inflammatory effects. In this study, we evaluated the anti-HCC activity of MPT0G009 in vitro and in vivo. Growth inhibition, apoptosis, and inhibited HDAC activity induced by MPT0G009 were more potent than a marketed HDAC inhibitor SAHA (Vorinostat). Furthermore, MPT0G009-induced apoptosis of Hep3B cells was characterized by an increase in apoptotic (sub-G1) population, loss of mitochondrial membrane potential, activation of caspase cascade, increased levels of pro-apoptotic protein (Bim), and decreased levels of anti-apoptotic proteins (Bcl-2, Bcl-xL, and FLICE-inhibitory protein); the downregulation FLIP by MPT0G009 is mediated through proteasome-mediated degradation and transcriptional suppression. In addition, combinations of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) with lower concentrations (0.1 μM) of MPT0G009 were synergistic in cell growth inhibition and apoptosis in HCC cells. In the in vivo model, MPT0G009 markedly reduced Hep3B xenograft tumor volume, inhibited HDAC activities, and induced apoptosis in the Hep3B xenografts. Our results demonstrate that MPT0G009 is a potential new candidate drug for HCC therapy.

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