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Zhang H, Yan C, Xia Y, Guan J, Zhou S. Causal Gene Identification Using Non-Linear Regression-Based Independence Tests. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2023; 20:185-195. [PMID: 35139025 DOI: 10.1109/tcbb.2022.3149864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
With the development of biomedical techniques in the past decades, causal gene identification has become one of the most promising applications in human genome-based business, which can help doctors to evaluate the risk of certain genetic diseases and provide further treatment recommendations for potential patients. When no controlled experiments can be applied, machine learning techniques like causal inference-based methods are generally used to identify causal genes. Unfortunately, most of the existing methods detect disease-related genes by ranking-based strategies or feature selection techniques, which generally return a superset of the corresponding real causal genes. There are also some causal inference-based methods that can identify a part of real causal genes from those supersets, but they are just able to return a few causal genes. This is contrary to our knowledge, as many results from controlled experiments have demonstrated that a certain disease, especially cancer, is usually related to dozens or hundreds of genes. In this work, we present an effective approach for identifying causal genes from gene expression data by using a new search strategy based on non-linear regression-based independence tests, which is able to greatly reduce the search space, and simultaneously establish the causal relationships from the candidate genes to the disease variable. Extensive experiments on real-world cancer datasets show that our method is superior to the existing causal inference-based methods in three aspects: 1) our method can identify dozens of causal genes, and 1/3 ∼ 1/2 of the discovered causal genes can be verified by existing works that they are really directly related to the corresponding disease; 2) The discovered causal genes are able to distinguish the status or disease subtype of the target patient; 3) Most of the discovered causal genes are closely relevant to the disease variable.
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Vishnoi K, Ke R, Viswakarma N, Srivastava P, Kumar S, Das S, Singh SK, Principe DR, Rana A, Rana B. Ets1 mediates sorafenib resistance by regulating mitochondrial ROS pathway in hepatocellular carcinoma. Cell Death Dis 2022; 13:581. [PMID: 35789155 PMCID: PMC9253325 DOI: 10.1038/s41419-022-05022-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 01/21/2023]
Abstract
The incidence and mortality of hepatocellular carcinoma (HCC) are on a rise in the Western countries including US, attributed mostly to late detection. Sorafenib has been the first-line FDA-approved drug for advanced unresectable HCC for almost a decade, but with limited efficacy due to the development of resistance. More recently, several other multi-kinase inhibitors (lenvatinib, cabozantinib, regorafenib), human monoclonal antibody (ramucirumab), and immune checkpoint inhibitors (nivolumab, pembrolizumab) have been approved as systemic therapies. Despite this, the median survival of patients is not significantly increased. Understanding of the molecular mechanism(s) that govern HCC resistance is critically needed to increase efficacy of current drugs and to develop more efficacious ones in the future. Our studies with sorafenib-resistant (soraR) HCC cells using transcription factor RT2 Profiler PCR Arrays revealed an increase in E26 transformation-specific-1 (Ets-1) transcription factor in all soraR cells. HCC TMA studies showed an increase in Ets-1 expression in advanced HCC compared to the normal livers. Overexpression or knocking down Ets-1 modulated sorafenib resistance-related epithelial-mesenchymal transition (EMT), migration, and cell survival. In addition, the soraR cells showed a significant reduction of mitochondrial damage and mitochondrial reactive oxygen species (mROS) generation, which were antagonized by knocking down Ets-1 expression. More in-depth analysis identified GPX-2 as a downstream mediator of Ets-1-induced sorafenib resistance, which was down-regulated by Ets-1 knockdown while other antioxidant pathway genes were not affected. Interestingly, knocking down GPX2 expression significantly increased sorafenib sensitivity in the soraR cells. Our studies indicate the activation of a novel Ets-1-GPX2 signaling axis in soraR cells, targeting which might successfully antagonize resistance and increase efficacy.
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Affiliation(s)
- Kanchan Vishnoi
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Rong Ke
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Navin Viswakarma
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Piush Srivastava
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Sandeep Kumar
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Subhasis Das
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA ,grid.185648.60000 0001 2175 0319University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Sunil Kumar Singh
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Daniel R. Principe
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Ajay Rana
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA ,grid.185648.60000 0001 2175 0319University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612 USA ,grid.280892.90000 0004 0419 4711Jesse Brown VA Medical Center, Chicago, IL 60612 USA
| | - Basabi Rana
- grid.185648.60000 0001 2175 0319Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612 USA ,grid.185648.60000 0001 2175 0319University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612 USA ,grid.280892.90000 0004 0419 4711Jesse Brown VA Medical Center, Chicago, IL 60612 USA
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Nath M, Nath S, Choudhury Y. The impact of thiazolidinediones on the risk for prostate cancer in patients with type 2 diabetes mellitus: A review and meta-analysis. Meta Gene 2021. [DOI: 10.1016/j.mgene.2020.100840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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4
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Lemos C, Schulze VK, Baumgart SJ, Nevedomskaya E, Heinrich T, Lefranc J, Bader B, Christ CD, Briem H, Kuhnke LP, Holton SJ, Bömer U, Lienau P, von Nussbaum F, Nising CF, Bauser M, Hägebarth A, Mumberg D, Haendler B. The potent AMPK inhibitor BAY-3827 shows strong efficacy in androgen-dependent prostate cancer models. Cell Oncol (Dordr) 2021; 44:581-594. [PMID: 33492659 DOI: 10.1007/s13402-020-00584-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE 5' adenosine monophosphate-activated kinase (AMPK) is an essential regulator of cellular energy homeostasis and has been associated with different pathologies, including cancer. Precisely defining the biological role of AMPK necessitates the availability of a potent and selective inhibitor. METHODS High-throughput screening and chemical optimization were performed to identify a novel AMPK inhibitor. Cell proliferation and mechanistic assays, as well as gene expression analysis and chromatin immunoprecipitation were used to investigate the cellular impact as well as the crosstalk between lipid metabolism and androgen signaling in prostate cancer models. Also, fatty acid turnover was determined by examining lipid droplet formation. RESULTS We identified BAY-3827 as a novel and potent AMPK inhibitor with additional activity against ribosomal 6 kinase (RSK) family members. It displays strong anti-proliferative effects in androgen-dependent prostate cancer cell lines. Analysis of genes involved in AMPK signaling revealed that the expression of those encoding 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGCR), fatty acid synthase (FASN) and 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 2 (PFKFB2), all of which are involved in lipid metabolism, was strongly upregulated by androgen in responsive models. Chromatin immunoprecipitation DNA-sequencing (ChIP-seq) analysis identified several androgen receptor (AR) binding peaks in the HMGCR and PFKFB2 genes. BAY-3827 strongly down-regulated the expression of lipase E (LIPE), cAMP-dependent protein kinase type II-beta regulatory subunit (PRKAR2B) and serine-threonine kinase AKT3 in responsive prostate cancer cell lines. Also, the expression of members of the carnitine palmitoyl-transferase 1 (CPT1) family was inhibited by BAY-3827, and this was paralleled by impaired lipid flux. CONCLUSIONS The availability of the potent inhibitor BAY-3827 will contribute to a better understanding of the role of AMPK signaling in cancer, especially in prostate cancer.
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Affiliation(s)
- Clara Lemos
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Volker K Schulze
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Simon J Baumgart
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Bayer US LLC, Cambridge, MA, USA
| | | | - Tobias Heinrich
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Julien Lefranc
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Nuvisan Innovation Campus Berlin, Berlin, Germany
| | - Benjamin Bader
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Nuvisan Innovation Campus Berlin, Berlin, Germany
| | - Clara D Christ
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Hans Briem
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Lara P Kuhnke
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Simon J Holton
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Nuvisan Innovation Campus Berlin, Berlin, Germany
| | - Ulf Bömer
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Nuvisan Innovation Campus Berlin, Berlin, Germany
| | - Philip Lienau
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Franz von Nussbaum
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Nuvisan Innovation Campus Berlin, Berlin, Germany
| | - Carl F Nising
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Marcus Bauser
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.,Janssen Pharmaceuticals, Beerse, Belgium
| | - Andrea Hägebarth
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Dominik Mumberg
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany
| | - Bernard Haendler
- Bayer AG, Research and Development, Pharmaceuticals, Berlin, Germany.
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Mutant Kras as a Biomarker Plays a Favorable Role in FL118-Induced Apoptosis, Reactive Oxygen Species (ROS) Production and Modulation of Survivin, Mcl-1 and XIAP in Human Bladder Cancer. Cancers (Basel) 2020; 12:cancers12113413. [PMID: 33217967 PMCID: PMC7698790 DOI: 10.3390/cancers12113413] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/13/2020] [Indexed: 12/12/2022] Open
Abstract
Simple Summary FL118 is a novel orally available small molecule anticancer drug. We found that bladder cancer cells with a mutant Kras is highly sensitive to FL118-induced cell growth inhibition and cell death induction through inhibiting the anti-cancer cell death and drug resistance factors (survivin, Mcl-1, XIAP). In the Kras-mutation bladder cancer cells, FL118 can stimulate the reactive oxygen species (ROS) over-production for killing bladder cancer cells and inhibiting bladder cancer cell-established tumor growth. Elimination of mutant Kras by Kras-specific shRNA technology in mutant Kras-containing bladder cancer cell-established tumor decreased FL118 effectiveness to inhibit bladder cancer tumor growth. In this regard, mutant Kras is a potential favorable biomarker for FL118. This finding is significant because mutant Kras is known to be a formidable challenge treatment resistant factor in various types of cancer. Thus, FL118 could use mutant Kras as favorable biomarker for patient selection to carry out precision medicine. Abstract Tumor heterogeneity in key gene mutations in bladder cancer (BC) is a major hurdle for the development of effective treatments. Using molecular, cellular, proteomics and animal models, we demonstrated that FL118, an innovative small molecule, is highly effective at killing T24 and UMUC3 high-grade BC cells, which have Hras and Kras mutations, respectively. In contrast, HT1376 BC cells with wild-type Ras are insensitive to FL118. This concept was further demonstrated in additional BC and colorectal cancer cells with mutant Kras versus those with wild-type Kras. FL118 strongly induced PARP cleavage (apoptosis hallmark) and inhibited survivin, XIAP and/or Mcl-1 in both T24 and UMUC3 cells, but not in the HT1376 cells. Silencing mutant Kras reduced both FL118-induced PARP cleavage and downregulation of survivin, XIAP and Mcl-1 in UMUC3 cells, suggesting mutant Kras is required for FL118 to exhibit higher anticancer efficacy. FL118 increased reactive oxygen species (ROS) production in T24 and UMUC3 cells, but not in HT1376 cells. Silencing mutant Kras in UMUC3 cells reduced FL118-mediated ROS generation. Proteomics analysis revealed that a profound and opposing Kras-relevant signaling protein is changed in UMUC3 cells and not in HT1376 cells. Consistently, in vivo studies indicated that UMUC3 tumors are highly sensitive to FL118 treatment, while HT1376 tumors are highly resistant to this agent. Silencing mutant Kras in UMUC3 cell-derived tumors decreases UMUC3 tumor sensitivity to FL118 treatment. Together, our studies revealed that mutant Kras is a favorable biomarker for FL118 targeted treatment.
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Vishnoi K, Ke R, Saini KS, Viswakarma N, Nair RS, Das S, Chen Z, Rana A, Rana B. Berberine Represses β-Catenin Translation Involving 4E-BPs in Hepatocellular Carcinoma Cells. Mol Pharmacol 2020; 99:1-16. [PMID: 33130557 DOI: 10.1124/molpharm.120.000029] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 10/02/2020] [Indexed: 12/17/2022] Open
Abstract
Aberrant activation of Wnt/β-catenin axis occurs in several gastrointestinal malignancies due to inactivating mutations of adenomatous polyposis coli (in colorectal cancer) or activating mutations of β-catenin itself [in hepatocellular carcinoma (HCC)]. These lead to β-catenin stabilization, increase in β-catenin/T-cell factor (TCF)-mediated transcriptional activation, and target gene expression, many of which are involved in tumor progression. While studying pharmaceutical agents that can target β-catenin in cancer cells, we observed that the plant compound berberine (BBR), a potent activator of AMP-activated protein kinase (AMPK), can reduce β-catenin expression and downstream signaling in HCC cells in a dose-dependent manner. More in-depth analyses to understand the mechanism revealed that BBR-induced reduction of β-catenin occurs independently of AMPK activation and does not involve transcriptional or post-translational mechanisms. Pretreatment with protein synthesis inhibitor cycloheximide antagonized BBR-induced β-catenin reduction, suggesting that BBR affects β-catenin translation. BBR treatment also antagonized mammalian target of rapamycin (mTOR) activity and was associated with increased recruitment of eukaryotic translation initiation factor 4E-binding protein (4E-BP) 1 in the translational complex, which was revealed by 7-methyl-cap-binding assays, suggesting inhibition of cap-dependent translation. Interestingly, knocking down 4E-BP1 and 4E-BP2 significantly attenuated BBR-induced reduction of β-catenin levels and expression of its downstream target genes. Moreover, cells with 4E-BP knockdown were resistant to BBR-induced cell death and were resensitized to BBR after pharmacological inhibition of β-catenin. Our findings indicate that BBR antagonizes β-catenin pathway by inhibiting β-catenin translation and mTOR activity and thereby reduces HCC cell survival. These also suggest that BBR could be used for targeting HCCs that express mutated/activated β-catenin variants that are currently undruggable. SIGNIFICANCE STATEMENT: β-catenin signaling is aberrantly activated in different gastrointestinal cancers, including hepatocellular carcinoma, which is currently undruggable. In this study we describe a novel mechanism of targeting β-catenin translation via utilizing a plant compound, berberine. Our findings provide a new avenue of targeting β-catenin axis in cancer, which can be utilized toward the designing of effective therapeutic strategies to combat β-catenin-dependent cancers.
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Affiliation(s)
- Kanchan Vishnoi
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Rong Ke
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Karan S Saini
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Navin Viswakarma
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Rakesh Sathish Nair
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Subhasis Das
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Zhengjia Chen
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Ajay Rana
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
| | - Basabi Rana
- Department of Surgery, Division of Surgical Oncology (K.V., R.K., K.S.S., N.V., R.S.N., S.D., A.R., B.R.), University of Illinois Hospital and Health Sciences System Cancer Center (S.D., A.R., B.R.), and Division of Epidemiology and Biostatistics, School of Public Health (Z.C.), University of Illinois at Chicago, Chicago, Illinois; Biostatistics Shared Resource Core, University of Illinois Cancer Institute, Chicago, Illinois (Z.C.); and Jesse Brown VA Medical Center, Chicago, Illinois (A.R., B.R.)
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7
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Mrowka P, Glodkowska-Mrowka E. PPARγ Agonists in Combination Cancer Therapies. Curr Cancer Drug Targets 2019; 20:197-215. [PMID: 31814555 DOI: 10.2174/1568009619666191209102015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/03/2019] [Accepted: 11/01/2019] [Indexed: 12/15/2022]
Abstract
Peroxisome proliferator-activated receptor-gamma (PPARγ) is a nuclear receptor acting as a transcription factor involved in the regulation of energy metabolism, cell cycle, cell differentiation, and apoptosis. These unique properties constitute a strong therapeutic potential that place PPARγ agonists as one of the most interesting and widely studied anticancer molecules. Although PPARγ agonists exert significant, antiproliferative and tumoricidal activity in vitro, their anticancer efficacy in animal models is ambiguous, and their effectiveness in clinical trials in monotherapy is unsatisfactory. However, due to pleiotropic effects of PPARγ activation in normal and tumor cells, PPARγ ligands interact with many antitumor treatment modalities and synergistically potentiate their effectiveness. The most spectacular example is a combination of PPARγ ligands with tyrosine kinase inhibitors (TKIs) in chronic myeloid leukemia (CML). In this setting, PPARγ activation sensitizes leukemic stem cells, resistant to any previous form of treatment, to targeted therapy. Thus, this combination is believed to be the first pharmacological therapy able to cure CML patients. Within the last decade, a significant body of data confirming the benefits of the addition of PPARγ ligands to various antitumor therapies, including chemotherapy, hormonotherapy, targeted therapy, and immunotherapy, has been published. Although the majority of these studies have been carried out in vitro or animal tumor models, a few successful attempts to introduce PPARγ ligands into anticancer therapy in humans have been recently made. In this review, we aim to summarize shines and shadows of targeting PPARγ in antitumor therapies.
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Affiliation(s)
- Piotr Mrowka
- Department of Biophysics and Human Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Eliza Glodkowska-Mrowka
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, Warsaw, Poland.,Department of Experimental Hematology, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
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8
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Tokunaga R, Cao S, Naseem M, Battaglin F, Lo JH, Arai H, Loupakis F, Stintzing S, Puccini A, Berger MD, Soni S, Zhang W, Mancao C, Salhia B, Mumenthaler SM, Weisenberger DJ, Liang G, Cremolini C, Heinemann V, Falcone A, Millstein J, Lenz HJ. AMPK variant, a candidate of novel predictor for chemotherapy in metastatic colorectal cancer: A meta-analysis using TRIBE, MAVERICC and FIRE3. Int J Cancer 2019; 145:2082-2090. [PMID: 30856283 DOI: 10.1002/ijc.32261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/23/2019] [Accepted: 02/13/2019] [Indexed: 11/08/2022]
Abstract
AMP-activated protein kinase (AMPK) is a key sensor of energy homeostasis and regulates cell metabolism, proliferation and chemotherapy/radiotherapy sensitivities. This study aimed to explore the relationship between the AMPK pathway-related single nucleotide polymorphisms (SNPs) and clinical outcomes in patients with metastatic colorectal cancer (mCRC). We analyzed a total of 884 patients with mCRC enrolled in three randomized clinical trials (TRIBE, MAVERICC and FIRE-3: where patients were treated with FOLFIRI, mFOLFOX6 or FOLFOXIRI combined with bevacizumab or cetuximab as the first-line chemotherapy). The association between AMPK pathway-related SNPs and clinical outcomes was analyzed across the six treatment cohorts, using a meta-analysis approach. Our meta-analysis showed that AMPK pathway had significant associations with progression-free survival (PFS; p < 0.001) and overall survival (OS; p < 0.001), but not with tumor response (TR; p = 0.220): PRKAA1 rs13361707 was significantly associated with favorable PFS (log HR = -0.219, SE = 0.073, p = 0.003), as well as PRKAA1 rs10074991 (log HR = -0.215, SE = 0.073, p = 0.003), and there were suggestive associations of PRKAG1 rs1138908 with unfavorable OS (log HR = 0.170, SE = 0.083, p = 0.041), and of UBE2O rs3803739 with unfavorable PFS (log HR = 0.137, SE = 0.068, p = 0.042) and OS (log HR = 0.210, SE = 0.077, p = 0.006), although these results were not significant after false discovery rate adjustment. AMPK pathway-related SNPs may be predictors for chemotherapy in mCRC. Upon validation, our findings would provide novel insight for selecting treatment strategies.
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Affiliation(s)
- Ryuma Tokunaga
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shu Cao
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Madiha Naseem
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Francesca Battaglin
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.,Clinical and Experimental Oncology Department, Medical Oncology Unit 1 Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Jae Ho Lo
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Hiroyuki Arai
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Fotios Loupakis
- Clinical and Experimental Oncology Department, Medical Oncology Unit 1 Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Sebastian Stintzing
- Medical Department, Divison of Oncology and Hematology (CCM), Charité Universitätsmedizin, Berlin, Germany
| | - Alberto Puccini
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Martin D Berger
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shivani Soni
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Wu Zhang
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Christoph Mancao
- Oncology Biomarker Development, Genentech Inc., Basel, Switzerland
| | - Bodour Salhia
- Department of Translational Genomics, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shannon M Mumenthaler
- Lawrence J. Ellison Institute for Transformative Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Daniel J Weisenberger
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Gangning Liang
- Department of Urology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Volker Heinemann
- Medical Department, Divison of Oncology and Hematology (CCM), Charité Universitätsmedizin, Berlin, Germany
| | - Alfredo Falcone
- Department of Medical Oncology, University of Pisa, Pisa, Italy
| | - Joshua Millstein
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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9
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Han XQ, Xu SQ, Lin JG. Curcumin Recovers Intracellular Lipid Droplet Formation Through Increasing Perilipin 5 Gene Expression in Activated Hepatic Stellate Cells In Vitro. Curr Med Sci 2019; 39:766-777. [DOI: 10.1007/s11596-019-2104-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/02/2019] [Indexed: 02/06/2023]
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10
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Zhang Y, Zhou X, Cheng L, Wang X, Zhang Q, Zhang Y, Sun S. PRKAA1 Promotes Proliferation and Inhibits Apoptosis of Gastric Cancer Cells Through Activating JNK1 and Akt Pathways. Oncol Res 2019; 28:213-223. [PMID: 31558185 PMCID: PMC7851536 DOI: 10.3727/096504019x15668125347026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
PRKAA1 (protein kinase AMP-activated catalytic subunit α 1) is a catalytic subunit of AMP-activated protein kinase (AMPK), which plays a key role in regulating cellular energy metabolism through phosphorylation, and genetic variations in the PRKAA1 have been found to be associated with gastric cancer risk. However, the effect and underlying molecular mechanism of PRKAA1 on gastric cancer tumorigenesis, especially the proliferation and apoptosis, are not fully understood. Our data showed that PRKAA1 is highly expressed in BGC-823 and MKN45 cells and is expressed low in SGC-7901 and MGC-803 cells in comparison with the other gastric cancer cells. PRKAA1 downregulation by shRNA or treatment of AMPK inhibitor compound C significantly inhibited proliferation as well as promoted cell cycle arrest and apoptosis of BGC-823 and MKN45 cells. Moreover, the expression of PCNA and Bcl-2 and the activity of JNK1 and Akt signaling were also reduced in BGC-823 and MKN45 cells after PRKAA1 downregulation. In vivo experiments demonstrated that tumor growth in nude mice was significantly inhibited after PRKAA1 silencing. Importantly, inactivation of JNK1 or Akt signaling pathway significantly inhibited PRKAA1 overexpression-induced increased cell proliferation and decreased cell apoptosis in MGC-803 cells. In conclusion, our findings suggest that PRKAA1 increases proliferation and restrains apoptosis of gastric cancer cells through activating JNK1 and Akt pathways.
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Affiliation(s)
- Yangmei Zhang
- Department of Oncology, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Xichang Zhou
- Department of Intervention, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Long Cheng
- Department of Intervention, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Xiang Wang
- Department of Oncology, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Qinglin Zhang
- Department of Central Laboratory, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Youwei Zhang
- Department of Oncology, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
| | - Sanyuan Sun
- Department of Oncology, Xuzhou Central Hospital, Xuzhou Medical UniversityXuzhouP.R. China
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11
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Chang SN, Lee JM, Oh H, Kim U, Ryu B, Park JH. Troglitazone inhibits the migration and invasion of PC-3 human prostate cancer cells by upregulating E-cadherin and glutathione peroxidase 3. Oncol Lett 2018; 16:5482-5488. [PMID: 30250621 DOI: 10.3892/ol.2018.9278] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 04/28/2017] [Indexed: 11/06/2022] Open
Abstract
Troglitazone (TGZ) is a synthetic peroxisome proliferator-activated receptor γ (PPARγ) ligand that exhibits potential antitumor effects on a number of cancer subtypes, including prostate cancer. However, little is known about the effect of TGZ on metastasis in prostate cancer. The aim of the present study was to determine the inhibitory effect and mechanism underlying TGZ on cell growth, migration and invasion using the prostate cancer PC-3 cell line. Cellular migration and invasion were evaluated by performing a wound healing assay and Matrigel assay, respectively. The expression levels of mRNA and protein were determined by reverse transcription-quantitative polymerase chain reaction and western blotting. The results demonstrated that TGZ dose-dependently inhibited cell migration and invasion of PC-3 cells. The present study also revealed that TGZ increased the mRNA and protein levels of E-cadherin and glutathione peroxidase 3 (GPx3) in human prostate cancer PC-3 cells. In addition, GW9662, a PPARγ antagonist, attenuated the increased mRNA and protein levels of E-cadherin and GPx3, suggesting that the PPARγ-dependent signaling pathway was involved. Taken together, these results suggested that the anti-migration and anti-invasion effect of TGZ on PC-3 prostate cancer cells is, at least in part, mediated via upregulation of E-cadherin and GPx3. The present study also concluded that PPARγ may be used as a potential remedial target for the prevention and treatment of prostate cancer cell invasion and metastasis.
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Affiliation(s)
- Seo-Na Chang
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ji Min Lee
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
| | - Hanseul Oh
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ukjin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
| | - Bokyeong Ryu
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jae-Hak Park
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
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12
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Zhao N, Mi L, Zhang X, Xu M, Yu H, Liu Z, Liu X, Guan G, Gao W, Wang J. Enhanced MiR-711 transcription by PPARγ induces endoplasmic reticulum stress-mediated apoptosis targeting calnexin in rat cardiomyocytes after myocardial infarction. J Mol Cell Cardiol 2018. [DOI: 10.1016/j.yjmcc.2018.03.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Ke R, Vishnoi K, Viswakarma N, Santha S, Das S, Rana A, Rana B. Involvement of AMP-activated protein kinase and Death Receptor 5 in TRAIL-Berberine-induced apoptosis of cancer cells. Sci Rep 2018; 8:5521. [PMID: 29615720 PMCID: PMC5882856 DOI: 10.1038/s41598-018-23780-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 03/20/2018] [Indexed: 12/22/2022] Open
Abstract
Our previous studies indicated that combination of Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and PPARγ ligand Troglitazone (TZD), can induce significant apoptosis in various TRAIL-resistant prostate and hepatocellular carcinoma (HCC) cells. These also suggested serine/threonine kinase AMP-activated protein kinase (AMPK) to be a mediator of TRAIL-TZD-induced apoptosis. To further validate AMPK’s role in TRAIL sensitization, we determined the apoptotic potential of TRAIL in combination with the natural compound Berberine (BBR), the latter being a potent activator of AMPK. These demonstrated a significant reduction of cell viability and induction of apoptosis (increased cleavage of caspase 3, 8, 9) when treated with TRAIL-BBR combination. This apoptosis is attenuated in cells overexpressing AMPKα-dominant negative (DN) or following AMPKα knockdown, confirming involvement of AMPK. To identify potential downstream mediators involved, an apoptosis RT2 PCR array analysis was performed. These showed induction of several genes including TNFRSF10B (expresses DR5) and Harakiri following BBR treatment, which were further validated by qPCR analysis. Furthermore, knocking down DR5 expression significantly attenuated TRAIL-BBR-induced apoptosis, suggesting DR5 to be a mediator of this apoptosis. Our studies indicate that combination of TRAIL and AMPK activator BBR might be an effective means of ameliorating TRAIL-resistance involving DR5 in advanced cancer.
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Affiliation(s)
- Rong Ke
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA
| | - Kanchan Vishnoi
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA
| | - Navin Viswakarma
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA
| | - Sreevidya Santha
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA.,Department of Pharmacology & Therapeutics, Roswell Park Cancer Institute, Buffalo, NY, 14263, USA
| | - Subhasis Das
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA
| | - Ajay Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA.,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL-60612, USA.,Jesse Brown VA Medical Center, Chicago, IL, 60612, USA
| | - Basabi Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL-60612, USA. .,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL-60612, USA. .,Jesse Brown VA Medical Center, Chicago, IL, 60612, USA.
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14
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Yousefnia S, Momenzadeh S, Seyed Forootan F, Ghaedi K, Nasr Esfahani MH. The influence of peroxisome proliferator-activated receptor γ (PPARγ) ligands on cancer cell tumorigenicity. Gene 2018; 649:14-22. [DOI: 10.1016/j.gene.2018.01.018] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 09/10/2017] [Accepted: 01/04/2018] [Indexed: 02/08/2023]
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15
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Lu Y, Sun Y, Zhu J, Yu L, Jiang X, Zhang J, Dong X, Ma B, Zhang Q. Oridonin exerts anticancer effect on osteosarcoma by activating PPAR-γ and inhibiting Nrf2 pathway. Cell Death Dis 2018; 9:15. [PMID: 29323103 PMCID: PMC5849031 DOI: 10.1038/s41419-017-0031-6] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/21/2017] [Accepted: 10/02/2017] [Indexed: 12/16/2022]
Abstract
Osteosarcoma is the most common high-grade human primary malignant bone sarcoma with lower survival in the past decades. Oridonin, a bioactive diterpenoid isolated from Rabdosia rubescens, has been proved to possess potent anti-cancer effects. However, its potential mechanism still remains not fully clear nowadays. In this study, we investigated the anticancer effect of oridonin on human osteosarcoma and illuminated the underlying mechanisms. In vitro, oridonin inhibited the cell viability of various osteosarcoma cells. We demonstrated that oridonin induced mitochondrial-mediated apoptosis by increasing Bax/Bcl-2 ratio, loss of mitochondrial membrane potential (MMP), triggering reactive oxygen species (ROS) generation and activating caspase-3 and caspase-9 cleavage in MG-63 and HOS cells. Moreover, we found that oridonin triggered ROS by inhibiting NF-E2-related factor 2 (Nrf2) pathway and induced mitochondrial apoptosis via inhibiting nuclear factor-κB (NF-κB) activation by activating Peroxisome Proliferator-Activated Receptor γ (PPAR-γ) in MG-63 and HOS cells. We further confirmed the results by PPAR-γ inhibitor GW9662, PPAR-γ siRNA as well as overexpression of PPAR-γ and Nrf2 in vitro. Furthermore, our in vivo study showed that oridonin inhibited tumor growth with high safety via inducing apoptosis through activating PPAR-γ and inhibiting Nrf2 activation in xenograft model inoculated HOS tumor. Taken together, oridonin exerted a dramatic pro-apoptotic effect by activating PPAR-γ and inhibiting Nrf2 pathway in vitro and in vivo. Therefore, oridonin may be a promising and effective agent for human osteosarcoma in the future clinical applications.
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Affiliation(s)
- Ying Lu
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Yang Sun
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China.
| | - Jianwei Zhu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Lisha Yu
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Xiubo Jiang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Jie Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Xiaochen Dong
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China
| | - Bo Ma
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China.
| | - Qi Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, The People's Republic of China.
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16
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Kawakita T, Masato N, Takiguchi E, Abe A, Irahara M. Cytotoxic effects of 15-deoxy-Δ12,14-prostaglandin J2 alone and in combination with dasatinib against uterine sarcoma in vitro. Exp Ther Med 2017; 13:2939-2945. [PMID: 28587364 PMCID: PMC5450749 DOI: 10.3892/etm.2017.4346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/15/2017] [Indexed: 01/21/2023] Open
Abstract
Effective chemotherapeutic strategies for uterine sarcoma are lacking; existing therapies achieve poor response rates. Previous studies have identified the prostaglandin 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) as a potential anticancer treatment; however, its effectiveness in uterine sarcoma has not been examined. Furthermore, the molecular mechanisms underlying the cytotoxic mechanism of 15d-PGJ2 remain unclear. Here, we evaluated the effects of 15d-PGJ2 alone and in combination with the tyrosine kinas inhibitor (TKI) dasatinib in uterine sarcoma cell lines (MES-SA, MES-SA/DX5 and SKN). 15d-PGJ2 inhibited cell growth and increased apoptosis. Western blotting demonstrated that 15d-PGJ2 treatment increased MEK and ERK phosphorylation, and decreased levels of phosphorylated AKT. Dasatinib in combination with 15d-PGJ2 significantly reduced cell proliferation compared with 15d-PGJ2 alone, and repressed both the AKT and MAPK pathways. The cell growth inhibition rate in the PGJ2 was 21.5±12.0, 35.3±5.4 and 28.3±4.2%, respectively (MES-SA, MES-SA/DX5 and SKN cell lines) and the cell growth inhibition rate in the combination therapy was significantly higher compared with 15d-PGJ2 alone (MES-SA; 64.2±0.8, MES-SA/DX5;23.9±8.2 and SKN; 41.4±17.6%). The PGJ2 IC50 determined by MTT assay was 27.41,10.46 and 17.38 µmol/l, respectively (MES-SA, MES-SA/DX5 and SKN cell lines) and the dasatinib IC50 was 6.68,17.30 and 6.25 µmol/l, respectively. Our findings demonstrate that 15d-PGJ2 suppresses proliferation by inactivating the AKT pathway in uterine sarcoma. Furthermore, combining 15d-PGJ2 with dasatinib produced a synergistic effect on cancer cell inhibition by repressing 15d-PGJ2-mediated activation of MAPK signaling, and further repressing AKT signaling. These results suggest that 15d-PGJ2 could be used in combination with dasatinib as a potential therapeutic approach for uterine sarcoma.
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Affiliation(s)
- Takako Kawakita
- Department of Obsterics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Nisimura Masato
- Department of Obsterics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Eri Takiguchi
- Department of Obsterics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Akiko Abe
- Department of Obsterics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Minoru Irahara
- Department of Obsterics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
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17
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Santha S, Davaakhuu G, Basu A, Ke R, Das S, Rana A, Rana B. Modulation of glycogen synthase kinase-3β following TRAIL combinatorial treatment in cancer cells. Oncotarget 2016; 7:66892-66905. [PMID: 27602497 PMCID: PMC5341845 DOI: 10.18632/oncotarget.11834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/29/2016] [Indexed: 12/12/2022] Open
Abstract
Glycogen Synthase Kinase-3β (GSK3β) is a serine/threonine kinase, known to regulate various cellular processes including proliferation, differentiation, survival, apoptosis as well as TRAIL-resistance. Thus pathways that can modulate GSK3β axis are important targets for cancer drug development. Our earlier studies have shown that combinatorial treatment with Troglitazone (TZD) and TRAIL can induce apoptosis in TRAIL-resistant cancer cells. The current studies were undertaken to investigate whether GSK3β pathway was modulated during this apoptosis. Our results indicated an increase in inhibitory GSK3βSer9 phosphorylation during apoptosis, mediated via AKT. At a later time, however, TZD alone and TRAIL-TZD combination produced a dramatic reduction of GSK3β expression, which was abolished by cycloheximide. Luciferase assays with GSK3β-luc promoter reporter showed that TZD can effectively antagonize GSK3β promoter activity. Since TZD is a ligand for transcription factor PPARγ and can activate AMPK, we determined their roles on antagonism of GSK3β. Knockdown of PPARγ was unable to restore GSK3β expression or antagonize GSK3βSer9 phosphorylation. Although pretreatment with Compound C (pharmacological inhibitor of AMPK) partially rescued GSK3β expression, knockdown of AMPKα1 or α2 alone or in combination were ineffective. These studies suggested a novel PPARγ-AMPK-independent mechanism of targeting GSK3β by TZD, elucidation of which might provide newer insights to improve our understanding of TRAIL-resistance.
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Affiliation(s)
- Sreevidya Santha
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Gantulga Davaakhuu
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Aninda Basu
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Rong Ke
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Subhasis Das
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ajay Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA.,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA.,Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Basabi Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, IL 60612, USA.,University of Illinois Hospital and Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA.,Jesse Brown VA Medical Center, Chicago, IL 60612, USA
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