1
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Kaplan Ö. Synergistic induction of apoptosis in liver cancer cells: exploring the combined potential of doxorubicin and XL-888. Med Oncol 2023; 40:318. [PMID: 37794195 DOI: 10.1007/s12032-023-02181-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/02/2023] [Indexed: 10/06/2023]
Abstract
Combination therapy has been frequently preferred in treating various types of cancer in recent years. Targeted cancer therapy has also become one of the remarkable treatment modalities. Therefore, the aim of the study to investigate its cytotoxic and apoptotic effects on liver cancer cell lines by combining the classical chemotherapeutic drug doxorubicin (DOX) and a targeted agent, the new generation HSP90 inhibitor XL-888. The molecular docking method was used to predict the binding conformation of XL-888 on the human Hsp90. The single and combined cytotoxic effects of DOX and XL-888 on liver cancer cell lines HepG2 and HUH-7 were determined by MTT assay. The effect of the combined use of two drugs was evaluated using Chou and Talalay method. The levels of apoptotic genes and heat shock proteins gene and protein expression levels were investigated by quantitative real-time polymerase chain reaction and western blotting, respectively. Molecular docking results showed that XL-888 selectively binds to the ATP binding pocket of HSP90 with an estimated free binding energy of - 7.8 kcal/mol. DOX and XL-888 and their combination showed dose-dependent cytotoxic effect. The combination of drugs showed a synergistic effect on both cell lines. The results revealed that the combination of DOX and XL-888 potently induced apoptosis in liver cancer cell lines rather than using drugs alone. The combined treatment of DOX and XL-888 demonstrated synergistic cytotoxic and apoptotic effects on liver cancer cell lines, presenting a promising approach for combination therapy in liver cancer.
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Affiliation(s)
- Özlem Kaplan
- Department of Genetics and Bioengineering, Rafet Kayış Faculty of Engineering, Alanya Alaaddin Keykubat University, Antalya, Turkey.
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2
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Karademir D, Özgür A. The effects of STA-9090 (Ganetespib) and venetoclax (ABT-199) combination on apoptotic pathways in human cervical cancer cells. Med Oncol 2023; 40:234. [PMID: 37432531 DOI: 10.1007/s12032-023-02107-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/26/2023] [Indexed: 07/12/2023]
Abstract
Combined chemotherapy is recommended strategy as a first-line treatment method in patients with cervical cancer. Ganetespib (STA-9090) is a second-generation heat shock protein 90 (Hsp90) inhibitor that blocks the ATPase function of Hsp90 and inhibits the proper folding of oncogenic client proteins. Venetoclax (ABT-199) is an orally bioavailable Bcl-2 (B-cell lymphoma 2) inhibitor that stimulates apoptotic signaling pathways in cancer cells. This study evaluated the anticancer effects of STA-9090 combined with Venetoclax in the human cervical cancer cell line (HeLa). The human cervical cancer cells were treated with STA-9090, Venetoclax, and Sta-9090 plus Venetoclax for 48 h, and cell viability was measured using the XTT assay. The alteration of the Hsp90 protein expression level and the chaperone activity of HSP90 were detected by ELISA and luciferase aggregation assay, respectively. For the apoptotic process, qRT-PCR was applied to study Bcl-2-associated X protein (Bax), B-cell lymphoma 2 (Bcl-2), Bcl-2-like protein 1 (Bcl-xL ), Cytochrome c (Cyt-c), Caspase3 (Cas-3), and Caspase7 (Cas-7) expression levels after drug treatments. Also, a colorimetric Cas-3 activity assay was performed to detect the induction of the apoptosis process. Our results demonstrated that 8 nM of STA-9090 combined with 4 µM of Venetoclax synergistically inhibited cervical cancer cell proliferation more than STA-9090 or Venetoclax alone after 48 h of treatment. STA-9090 and Venetoclax combination decreased the protein expression level of Hsp90 and significantly inhibited chaperone activity of Hsp90. This combination stimulated apoptosis in cervical cancer cells by down-regulating of anti-apoptotic markers while inducing pro-apoptotic markers. Also, the STA-9090-Venetoclax combination increased Cas-3 activity in Hela cells. Collectively, these findings pointed out that the STA-9090-Venetoclax combination exhibited more activity than the individual drugs to stimulate toxicity and apoptosis in cervical cancer cells based on HSP90 inhibition.
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Affiliation(s)
- Dilay Karademir
- Faculty of Medicine, Department of Gynecology and Obstetrics, Sivas Cumhuriyet University, Sivas, Turkey.
| | - Aykut Özgür
- Artova Vocational School, Department of Veterinary Medicine, Laboratory and Veterinary Health Program, Tokat Gaziosmanpasa University, Tokat, Turkey
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3
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Akter S, Shimba A, Ikuta K, Mahmud MRA, Yamada S, Sasanuma H, Tsuda M, Sone M, Ago Y, Murai K, Tanaka H, Takeda S. Physiological concentrations of glucocorticoids induce pathological DNA double-strand breaks. Genes Cells 2023; 28:53-67. [PMID: 36415926 DOI: 10.1111/gtc.12993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/24/2022]
Abstract
Steroid hormones induce the transcription of target genes by activating nuclear receptors. Early transcriptional response to various stimuli, including hormones, involves the active catalysis of topoisomerase II (TOP2) at transcription regulatory sequences. TOP2 untangles DNAs by transiently generating double-strand breaks (DSBs), where TOP2 covalently binds to DSB ends. When TOP2 fails to rejoin, called "abortive" catalysis, the resulting DSBs are repaired by tyrosyl-DNA phosphodiesterase 2 (TDP2) and non-homologous end-joining (NHEJ). A steroid, cortisol, is the most important glucocorticoid, and dexamethasone (Dex), a synthetic glucocorticoid, is widely used for suppressing inflammation in clinics. We here revealed that clinically relevant concentrations of Dex and physiological concentrations of cortisol efficiently induce DSBs in G1 phase cells deficient in TDP2 and NHEJ. The DSB induction depends on glucocorticoid receptor (GR) and TOP2. Considering the specific role of TDP2 in removing TOP2 adducts from DSB ends, induced DSBs most likely represent stalled TOP2-DSB complexes. Inhibition of RNA polymerase II suppressed the DSBs formation only modestly in the G1 phase. We propose that cortisol and Dex frequently generate DSBs through the abortive catalysis of TOP2 at transcriptional regulatory sequences, including promoters or enhancers, where active TOP2 catalysis occurs during early transcriptional response.
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Affiliation(s)
- Salma Akter
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akihiro Shimba
- Laboratory of Immune Regulation, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koichi Ikuta
- Laboratory of Immune Regulation, Department of Virus Research, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Md Rasel Al Mahmud
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yamada
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroyuki Sasanuma
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masataka Tsuda
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakatsu Sone
- Department of Metabolic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Division of Metabolism and Endocrinology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Yukio Ago
- Department of Cellular and Molecular Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Hisashi Tanaka
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Shunichi Takeda
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Shenzhen University School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
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4
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Pan X, Mao TY, Mai YW, Liang CC, Huang WH, Rao Y, Huang ZS, Huang SL. Discovery of Quinacrine as a Potent Topo II and Hsp90 Dual-Target Inhibitor, Repurposing for Cancer Therapy. Molecules 2022; 27:molecules27175561. [PMID: 36080326 PMCID: PMC9458065 DOI: 10.3390/molecules27175561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Topo II and Hsp90 are promising targets. In this study, we first verified the structural similarities between Topo IIα ATPase and Hsp90α N−ATPase. Subsequently, 720 compounds from the Food and Drug Administration (FDA) drug library and kinase library were screened using the malachite green phosphate combination with the Topo II-mediated DNA relaxation and MTT assays. Subsequently, the antimalarial drug quinacrine was found to be a potential dual−target inhibitor of Topo II and Hsp90. Mechanistic studies showed that quinacrine could specifically bind to the Topo IIα ATPase domain and inhibit the activity of Topo IIα ATPase without impacting DNA cleavage. Furthermore, our study revealed that quinacrine could bind Hsp90 N−ATPase and inhibit Hsp90 activity. Significantly, quinacrine has broad antiproliferation activity and remains sensitive to the multidrug−resistant cell line MCF−7/ADR and the atypical drug−resistant tumor cell line HL−60/MX2. Our study identified quinacrine as a potential dual−target inhibitor of Topo II and Hsp90, depending on the ATP−binding domain, positioning it as a hit compound for further structural modification.
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Affiliation(s)
- Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Teng-yu Mao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yan-wen Mai
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Cheng-cheng Liang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wei-hao Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yong Rao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhi-shu Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Guangzhou 510120, China
| | - Shi-liang Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Guangzhou 510120, China
- Correspondence: ; Tel.: +86-20-39943053; Fax: +86-20-39943056
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Basset CA, Rappa F, Barone R, Florena AM, Porcasi R, Conway de Macario E, Macario AJL, Leone A. The Chaperone System in Salivary Glands: Hsp90 Prospects for Differential Diagnosis and Treatment of Malignant Tumors. Int J Mol Sci 2022; 23:ijms23169317. [PMID: 36012578 PMCID: PMC9409185 DOI: 10.3390/ijms23169317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
Salivary gland tumors represent a serious medical problem and new tools for differential diagnosis and patient monitoring are needed. Here, we present data and discuss the potential of molecular chaperones as biomarkers and therapeutic targets, focusing on Hsp10 and Hsp90. The salivary glands are key physiological elements but, unfortunately, the information and the means available for the management of their pathologies, including cancer, are scarce. Progress in the study of carcinogenesis has occurred on various fronts lately, one of which has been the identification of the chaperone system (CS) as a physiological system with presence in all cells and tissues (including the salivary glands) that plays a role in tumor-cell biology. The chief components of the CS are the molecular chaperones, some of which belong to families of evolutionarily related molecules named heat shock protein (Hsp). We are quantifying and mapping these molecular chaperones in salivary glands to determine their possible role in the carcinogenetic mechanisms in these glands and to assess their potential as diagnostic biomarkers and therapeutic targets. Here, we report recent findings on Hsp10 and Hsp90 and show that the quantitative and topographic patterns of tissue Hsp90 are distinctive of malignant tumors and differentiate benign from malignant lesions. The Hsp90 results show a correlation between quantity of chaperone and tumor progression, which in turn calls for negative chaperonotherapy, namely, elimination/inhibition of the chaperone to stop the tumor. We found that in vitro, the Hsp90 inhibitor Ganetespib is cytotoxic for the salivary gland UM-HACC-2A cell line. The drug, by interfering with the pro-survival NF-κB pathway, hampers cellular proliferation and migration, and favors apoptosis, and can, therefore, be considered a suitable candidate for future experimentation to develop a treatment for salivary gland tumors.
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Affiliation(s)
- Charbel A. Basset
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, 90133 Palermo, Italy
| | - Francesca Rappa
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, 90133 Palermo, Italy
| | - Rosario Barone
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, 90133 Palermo, Italy
| | - Ada Maria Florena
- Dipartimento di Promozione della Salute, Materno-Infantile, Medicina Interna e Specialistica di Eccellenza “G. D’Alessandro”, University of Palermo, 90133 Palermo, Italy
| | - Rossana Porcasi
- Dipartimento di Promozione della Salute, Materno-Infantile, Medicina Interna e Specialistica di Eccellenza “G. D’Alessandro”, University of Palermo, 90133 Palermo, Italy
| | - Everly Conway de Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), 90139 Palermo, Italy
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore-Institute of Marine and Environmental Technology (IMET), Baltimore, MD 21202, USA
| | - Alberto J. L. Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), 90139 Palermo, Italy
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore-Institute of Marine and Environmental Technology (IMET), Baltimore, MD 21202, USA
| | - Angelo Leone
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, 90133 Palermo, Italy
- Correspondence:
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6
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Pommier Y, Nussenzweig A, Takeda S, Austin C. Human topoisomerases and their roles in genome stability and organization. Nat Rev Mol Cell Biol 2022; 23:407-427. [PMID: 35228717 PMCID: PMC8883456 DOI: 10.1038/s41580-022-00452-3] [Citation(s) in RCA: 137] [Impact Index Per Article: 68.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2022] [Indexed: 12/15/2022]
Abstract
Human topoisomerases comprise a family of six enzymes: two type IB (TOP1 and mitochondrial TOP1 (TOP1MT), two type IIA (TOP2A and TOP2B) and two type IA (TOP3A and TOP3B) topoisomerases. In this Review, we discuss their biochemistry and their roles in transcription, DNA replication and chromatin remodelling, and highlight the recent progress made in understanding TOP3A and TOP3B. Because of recent advances in elucidating the high-order organization of the genome through chromatin loops and topologically associating domains (TADs), we integrate the functions of topoisomerases with genome organization. We also discuss the physiological and pathological formation of irreversible topoisomerase cleavage complexes (TOPccs) as they generate topoisomerase DNA–protein crosslinks (TOP-DPCs) coupled with DNA breaks. We discuss the expanding number of redundant pathways that repair TOP-DPCs, and the defects in those pathways, which are increasingly recognized as source of genomic damage leading to neurological diseases and cancer. Topoisomerases have essential roles in transcription, DNA replication, chromatin remodelling and, as recently revealed, 3D genome organization. However, topoisomerases also generate DNA–protein crosslinks coupled with DNA breaks, which are increasingly recognized as a source of disease-causing genomic damage.
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7
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Kurop MK, Huyen CM, Kelly JH, Blagg BSJ. The heat shock response and small molecule regulators. Eur J Med Chem 2021; 226:113846. [PMID: 34563965 PMCID: PMC8608735 DOI: 10.1016/j.ejmech.2021.113846] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/07/2021] [Accepted: 09/07/2021] [Indexed: 01/09/2023]
Abstract
The heat shock response (HSR) is a highly conserved cellular pathway that is responsible for stress relief and the refolding of denatured proteins [1]. When a host cell is exposed to conditions such as heat shock, ischemia, or toxic substances, heat shock factor-1 (HSF-1), a transcription factor, activates the genes that encode for the heat shock proteins (Hsps), which are a family of proteins that work alongside other chaperones to relieve stress and refold proteins that have been denatured (Burdon, 1986) [2]. Along with the refolding of denatured proteins, Hsps facilitate the removal of misfolded proteins by escorting them to degradation pathways, thereby preventing the accumulation of misfolded proteins [3]. Research has indicated that many pathological conditions, such as diabetes, cancer, neuropathy, cardiovascular disease, and aging have a negative impact on HSR function and are commonly associated with misfolded protein aggregation [4,5]. Studies indicate an interplay between mitochondrial homeostasis and HSF-1 levels can impact stress resistance, proteostasis, and malignant cell growth, which further support the role of Hsps in pathological and metabolic functions [6]. On the other hand, Hsp activation by specific small molecules can induce the heat shock response, which can afford neuroprotection and other benefits [7]. This review will focus on the modulation of Hsps and the HSR as therapeutic options to treat these conditions.
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Affiliation(s)
- Margaret K Kurop
- Warren Center for Drug Discovery, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Cormac M Huyen
- Warren Center for Drug Discovery, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - John H Kelly
- Warren Center for Drug Discovery, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Brian S J Blagg
- Warren Center for Drug Discovery, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
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8
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Yang S, Xiao H, Cao L. Recent advances in heat shock proteins in cancer diagnosis, prognosis, metabolism and treatment. Biomed Pharmacother 2021; 142:112074. [PMID: 34426258 DOI: 10.1016/j.biopha.2021.112074] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 02/07/2023] Open
Abstract
Heat shock proteins (HSPs) are a group of proteins, also known as molecular chaperones, which participate in protein folding and maturation in response to stresses or high temperature. According to their molecular weights, mammalian HSPs are classified into HSP27, HSP40, HSP60, HSP70, HSP90, and large HSPs. Previous studies have revealed that HSPs play important roles in oncogenesis and malignant progression because they can modulate all six hallmark traits of cancer. Because of this, HSPs have been propelled into the spotlight as biomarkers for cancer diagnosis and prognosis, as well as an exciting anticancer drug target. However, the relationship between the expression level of HSPs and their activity and cancer diagnosis, prognosis, metabolism and treatment is not clear and has not been completely established. Herein, this review summarizes and discusses recent advances and perspectives in major HSPs as biomarkers for cancer diagnosis, as regulators for cancer metabolism or as therapeutic targets for cancer therapy, which may provide new directions to improve the accuracy of cancer diagnosis and develop more effective and safer anticancer therapeutics.
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Affiliation(s)
- Shuxian Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China; Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | - Haiyan Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China; Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | - Li Cao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; Zhongguancun Open Laboratory of the Research and Development of Natural Medicine and Health Products, Beijing 100193, China; Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China.
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9
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Lombardi R, Sonego M, Pucci B, Addi L, Iannelli F, Capone F, Alfano L, Roca MS, Milone MR, Moccia T, Costa A, Di Gennaro E, Bruzzese F, Baldassarre G, Budillon A. HSP90 identified by a proteomic approach as druggable target to reverse platinum resistance in ovarian cancer. Mol Oncol 2021; 15:1005-1023. [PMID: 33331136 PMCID: PMC8024727 DOI: 10.1002/1878-0261.12883] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/05/2020] [Accepted: 12/14/2020] [Indexed: 12/23/2022] Open
Abstract
Acquired resistance to platinum (Pt)-based therapies is an urgent unmet need in the management of epithelial ovarian cancer (EOC) patients. Here, we characterized by an unbiased proteomics method three isogenic EOC models of acquired Pt resistance (TOV-112D, OVSAHO, and MDAH-2774). Using this approach, we identified several differentially expressed proteins in Pt-resistant (Pt-res) compared to parental cells and the chaperone HSP90 as a central hub of these protein networks. Accordingly, up-regulation of HSP90 was observed in all Pt-res cells and heat-shock protein 90 alpha isoform knockout resensitizes Pt-res cells to cisplatin (CDDP) treatment. Moreover, pharmacological HSP90 inhibition using two different inhibitors [17-(allylamino)-17-demethoxygeldanamycin (17AAG) and ganetespib] synergizes with CDDP in killing Pt-res cells in all tested models. Mechanistically, genetic or pharmacological HSP90 inhibition plus CDDP -induced apoptosis and increased DNA damage, particularly in Pt-res cells. Importantly, the antitumor activities of HSP90 inhibitors (HSP90i) were confirmed both ex vivo in primary cultures derived from Pt-res EOC patients ascites and in vivo in a xenograft model. Collectively, our data suggest an innovative antitumor strategy, based on Pt compounds plus HSP90i, to rechallenge Pt-res EOC patients that might warrant further clinical evaluation.
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Affiliation(s)
- Rita Lombardi
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Maura Sonego
- Division of Molecular OncologyCentro di Riferimento Oncologico di Aviano (CRO)IRCCSAvianoItaly
| | - Biagio Pucci
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Laura Addi
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Federica Iannelli
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Francesca Capone
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Luigi Alfano
- Cell Biology and Biotherapy UnitIstituto Nazionale Tumori ‐ IRCCS, Fondazione G. PascaleNaplesItaly
| | - Maria Serena Roca
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Maria Rita Milone
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Tania Moccia
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Alice Costa
- Division of Molecular OncologyCentro di Riferimento Oncologico di Aviano (CRO)IRCCSAvianoItaly
- University of TriesteItaly
| | - Elena Di Gennaro
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Francesca Bruzzese
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
| | - Gustavo Baldassarre
- Division of Molecular OncologyCentro di Riferimento Oncologico di Aviano (CRO)IRCCSAvianoItaly
| | - Alfredo Budillon
- Experimental Pharmacology Unit‐Laboratories of Naples and Mercogliano (AV)Istituto Nazionale per lo Studio e la Cura dei Tumori “Fondazione G. Pascale” – IRCCSNaplesItaly
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10
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Vargas JE, Puga R, Lenz G, Trindade C, Filippi-Chiela E. Cellular Mechanisms Triggered by the Cotreatment of Resveratrol and Doxorubicin in Breast Cancer: A Translational In Vitro-In Silico Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:5432651. [PMID: 33204396 PMCID: PMC7654215 DOI: 10.1155/2020/5432651] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/22/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022]
Abstract
Doxorubicin (Doxo) is the most effective chemotherapeutic agent for the treatment of breast cancer. However, resistance to Doxo is common. Adjuvant compounds capable of modulating mechanisms involved in Doxo resistance may potentiate the effectiveness of the drug. Resveratrol (Rsv) has been tested as an adjuvant in mammary malignancies. However, the cellular and molecular mechanisms underlying the effects of cotreatment with Doxo and Rsv in breast cancer are poorly understood. Here, we combined in vitro and in silico analysis to characterize these mechanisms. In vitro, we employed a clinically relevant experimental design consisting of acute (24 h) treatment followed by 15 days of analysis. Acute Rsv potentiated the long-lasting effect of Doxo through the induction of apoptosis and senescence. Cells that survived to the cotreatment triggered high levels of autophagy. Autophagy inhibition during its peak of activation but not concomitant with Doxo+Rsv increased the long-term toxicity of the cotreatment. To uncover key proteins potentially associated with in vitro effects, an in silico multistep strategy was implemented. Chemical-protein networks were predicted based on constitutive gene expression of MCF7 cells and interatomic data from breast cancer. Topological analysis, KM survival analysis, and a quantitative model based on the connectivity between apoptosis, senescence, and autophagy were performed. We found seven putative genes predicted to be modulated by Rsv in the context of Doxo treatment: CCND1, CDH1, ESR1, HSP90AA1, MAPK3, PTPN11, and RPS6KB1. Six out of these seven genes have been experimentally proven to be modulated by Rsv in cancer cells, with 4 of the 6 genes in MCF7 cells. In conclusion, acute Rsv potentiated the long-term toxicity of Doxo in breast cancer potentially through the modulation of genes and mechanisms involved in Doxo resistance. Rational autophagy inhibition potentiated the effects of Rsv+Doxo, a strategy that should be further tested in animal models.
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Affiliation(s)
- José Eduardo Vargas
- Instituto de Ciências Biológicas, Universidade de Passo Fundo, Brazil
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Renato Puga
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Guido Lenz
- Centro de Biotecnologia e Departamento de Biofísica, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Cristiano Trindade
- Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, Barranquilla, Colombia
| | - Eduardo Filippi-Chiela
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Departamento de Ciências Morfológicas, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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11
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Codony-Servat J, Viteri S, Codony-Servat C, Ito M, Bracht JWP, Berenguer J, Chaib I, Molina-Vila MA, Karachaliou N, Rosell R. Hsp90 inhibitors enhance the antitumoral effect of osimertinib in parental and osimertinib-resistant non-small cell lung cancer cell lines. Transl Lung Cancer Res 2019; 8:340-351. [PMID: 31555510 DOI: 10.21037/tlcr.2019.08.22] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Osimertinib improve therapy for non-small cell lung cancer (NSCLC). However, invariable acquired resistance appears. Methods MTT assay was used to analyze cell viability. Protein expression and activation was detected by Western blotting. In addition, the effects of heat shock protein 90 (Hsp90) inhibitors and osimertinib were studied in colony formation assays. Results Our laboratory generated osimertinib resistant cell lines from PC9 cell line and overexpression or activation of several proteins was detected. Hsp90 inhibitors, ganetespib and luminespib, inhibited cell viability and colony formation in H1975, PC9 and PC9-derived osimertinib-resistant cell lines and combination of these inhibitors with osimertinib achieved to enhance this cell viability and colony formation inhibition. Luminespib downregulated the expression of the several proteins involved in osimertinib-resistance and the combination of this compound plus osimertinib caused an important decrease of expression of several of these proteins, such as Stat3, Yap, Akt, EGFR and Met. Osimertinib activated the phosphorylation of several membrane receptors and downstream molecules that was partially inhibited by luminespib. In addition, a lung cancer patient with an EGFR eon 20 mutation had a partial radiographic response to ganetespib. Conclusions Hsp90 inhibitors and osimertinib exhibits a good efficiency to inhibit cell viability, colony formation and inhibits expression and activation of proteins involved in osimertinib-resistance and may represent an effective strategy for NSCLC with intrinsic resistance to osimertinib inhibition.
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Affiliation(s)
- Jordi Codony-Servat
- Laboratory of Oncology/Pangaea Oncology S.L., Quirón-Dexeus University Institute, Barcelona, Spain
| | - Santiago Viteri
- Instituto Oncológico Dr. Rosell (IOR), Quirón-Dexeus University Institute, Barcelona, Spain.,Instituto Oncológico Dr. Rosell (IOR), Teknon Hospital, Barcelona, Spain
| | - Carles Codony-Servat
- Laboratory of Oncology/Pangaea Oncology S.L., Quirón-Dexeus University Institute, Barcelona, Spain.,Laboratori de Recerca Translacional-CReST-IDIBELL, Hospitalet de Llobregat, Spain
| | - Masaoki Ito
- Laboratory of Oncology/Pangaea Oncology S.L., Quirón-Dexeus University Institute, Barcelona, Spain.,Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | | | - Jordi Berenguer
- Laboratory of Oncology/Pangaea Oncology S.L., Quirón-Dexeus University Institute, Barcelona, Spain
| | - Imane Chaib
- Catalan Institute of Oncology, Institut d'Investigació en Ciències de la Salut, Germans Trias i Pujol, Badalona, Spain
| | - Miguel Angel Molina-Vila
- Laboratory of Oncology/Pangaea Oncology S.L., Quirón-Dexeus University Institute, Barcelona, Spain
| | - Niki Karachaliou
- Instituto Oncológico Dr. Rosell (IOR), Sagrat Cor Hospital, Barcelona, Spain.,GCD Oncology, Merck KGaA, Darmstadt, Germany
| | - Rafael Rosell
- Instituto Oncológico Dr. Rosell (IOR), Quirón-Dexeus University Institute, Barcelona, Spain.,Catalan Institute of Oncology, Institut d'Investigació en Ciències de la Salut, Germans Trias i Pujol, Badalona, Spain
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12
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Wang X, Zeng Q, Li Z, Yang X, Xia W, Chen Z. Adjudin synergizes with paclitaxel and inhibits cell growth and metastasis by regulating the sirtuin 3-Forkhead box O3a axis in human small-cell lung cancer. Thorac Cancer 2019; 10:642-658. [PMID: 30779316 PMCID: PMC6449276 DOI: 10.1111/1759-7714.12976] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/23/2018] [Accepted: 12/24/2018] [Indexed: 12/25/2022] Open
Abstract
Background Small‐cell lung cancer (SCLC), a malignant tumor, is usually widely metastatic when diagnosed. The lack of important therapeutic clinical advances makes it difficult to treat. Previous studies showed that Adjudin had anticancer effects in many other human cancers, and it was synergetic with cisplatin in non‐small cell lung cancer. However, the mechanism on SCLC was unclear. Methods We investigated the potential mechanism and effect of Adjudin on SCLC both in vitro and in vivo. Results An SCLC xenograft model showed that Adjudin inhibited tumor growth and was significantly synergetic with paclitaxel (in vitro as well). Cell Counting Kit‐8 assays, flow cytometric analysis and western blotting showed that Adjudin effectively suppressed SCLC cell proliferation by inducing S phase arrest and caspase‐dependent apoptosis. Moreover, Transwell and scratch assays showed that Adjudin also effectively inhibited migration and invasion. Furthermore, Adjudin activated the sirtuin 3 (SIRT3)–Forkhead box O3a (FOXO3a) pathway. Downregulating SIRT3 or FOXO3a significantly attenuated Adjudin‐induced anticancer effects. Furthermore, higher expression of SIRT3 and FOXO3a were positively correlated, and both were associated with longer survival in lung cancer patients. Conclusion Overall, the present study is the first to show that Adjudin synergizes with paclitaxel and inhibits cell growth and metastasis by regulating the SIRT3–FOXO3a axis in SCLC; thus, Adjudin has great potential to be an anticancer agent.
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Affiliation(s)
- Xue Wang
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qingyu Zeng
- School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Ziming Li
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao Yang
- School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Weiliang Xia
- School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Zhiwei Chen
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
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13
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Encinas-Basurto D, Ibarra J, Juarez J, Pardo A, Barbosa S, Taboada P, Valdez MA. Hybrid folic acid-conjugated gold nanorods-loaded human serum albumin nanoparticles for simultaneous photothermal and chemotherapeutic therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:669-678. [PMID: 30033301 DOI: 10.1016/j.msec.2018.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 03/22/2018] [Accepted: 06/06/2018] [Indexed: 12/18/2022]
Abstract
Hybrid nanoparticles containing both structural and functional nanocomponents might result in higher success and increased quality of life for patients suffering a disease such as cancer. In this study, we combine chemotherapy of conventional drug doxorubicin (Dox) with gold nanorods (AuNR) for photothermal therapy using multifunctional human serum albumin nanoparticles (HSA NP's) fabricated via desolvation technique with high efficiency. Folic acid (FA) was conjugated to HSA NP's trough an amidation via carbodiimide reaction for a more specific nanoplataform to HeLa cancer cells. The loading efficiency of Dox into AuNR loaded-HSA NP reached up to 2 μg Dox/mg HSA. The HSA-AuNR-Dox NP experienced photothermal heating varying laser potency (1, 0.5 and 0.2 W); reaching the bulk particle solution an increment of 16, 8 and 6 °C after 10 min of near-IR laser exposure respectively. When HeLa cells were treated with this multifunctional nanoplataform containing only AuNR, cancer cells experienced 96% cell viability without irradiation and 55% cell viability after just one irradiation session. When Dox is present in the nanoplataform, viability were 60% and 24% for non-irradiated and irradiated nanoplataforms, respectively. This study demonstrates that HSA-AuNR-Dox nanoparticles are suitable systems allowing a synergic chemo and phothothermal therapy.
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Affiliation(s)
- David Encinas-Basurto
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, Mexico
| | - Jaime Ibarra
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, Mexico
| | - Josué Juarez
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, Mexico
| | - Alberto Pardo
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Spain
| | - Silvia Barbosa
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Spain
| | - Pablo Taboada
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Spain.
| | - Miguel A Valdez
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, Mexico
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14
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Ganetespib targets multiple levels of the receptor tyrosine kinase signaling cascade and preferentially inhibits ErbB2-overexpressing breast cancer cells. Sci Rep 2018; 8:6829. [PMID: 29717218 PMCID: PMC5931511 DOI: 10.1038/s41598-018-25284-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 04/04/2018] [Indexed: 11/08/2022] Open
Abstract
Although ErbB2-targeted therapeutics have significantly improved ErbB2+ breast cancer patient outcomes, therapeutic resistance remains a significant challenge. Therefore, the development of novel ErbB2-targeting strategies is necessary. Importantly, ErbB2 is a sensitive client protein of heat shock protein 90 (HSP90), which regulates client protein folding, maturation, and stabilization. HSP90 inhibition provides an alternative therapeutic strategy for ErbB2-targeted degradation. In particular, ganetespib, a novel HSP90 inhibitor, is a promising agent for ErbB2+ cancers. Nevertheless, the anti-cancer efficacy and clinical application of ganetespib for ErbB2+ breast cancer is largely unknown. In our study, we examined the anti-cancer effects of ganetespib on ErbB2+ BT474 and SKBR3 breast cancer cells, and isogenic paired cancer cell lines with lentivirus-mediated ErbB2 overexpression. Ganetespib potently inhibited cell proliferation, cell cycle progression, survival, and activation/phosphorylation of ErbB2 and key downstream effectors in ErbB2+ breast cancer cells. Moreover, ganetespib decreased the total protein levels of HSP90 client proteins and reduced ErbB2 protein half-life. ErbB2-overexpressing cancer cells were also more sensitive to ganetespib-mediated growth inhibition than parental cells. Ganetespib also strikingly potentiated the inhibitory effects of lapatinib in BT474 and SKBR3 cells. Ultimately, our results support the application of ganetespib-mediated HSP90 inhibition as a promising therapeutic strategy for ErbB2+ breast cancer.
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15
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Posfai D, Eubanks AL, Keim AI, Lu KY, Wang GZ, Hughes PF, Kato N, Haystead TA, Derbyshire ER. Identification of Hsp90 Inhibitors with Anti-Plasmodium Activity. Antimicrob Agents Chemother 2018; 62:e01799-17. [PMID: 29339390 PMCID: PMC5913967 DOI: 10.1128/aac.01799-17] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 01/05/2018] [Indexed: 12/17/2022] Open
Abstract
Malaria remains a global health burden partly due to Plasmodium parasite resistance to first-line therapeutics. The molecular chaperone heat shock protein 90 (Hsp90) has emerged as an essential protein for blood-stage Plasmodium parasites, but details about its function during malaria's elusive liver stage are unclear. We used target-based screens to identify compounds that bind to Plasmodium falciparum and human Hsp90, which revealed insights into chemotypes with species-selective binding. Using cell-based malaria assays, we demonstrate that all identified Hsp90-binding compounds are liver- and blood-stage Plasmodium inhibitors. Additionally, the Hsp90 inhibitor SNX-0723 in combination with the phosphatidylinositol 3-kinase inhibitor PIK-75 synergistically reduces the liver-stage parasite load. Time course inhibition studies with the Hsp90 inhibitors and expression analysis support a role for Plasmodium Hsp90 in late-liver-stage parasite development. Our results suggest that Plasmodium Hsp90 is essential to liver- and blood-stage parasite infections and highlight an attractive route for development of species-selective PfHsp90 inhibitors that may act synergistically in combination therapies to prevent and treat malaria.
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Affiliation(s)
- Dora Posfai
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Amber L Eubanks
- Department of Chemistry, Duke University, Durham, North Carolina, USA
| | - Allison I Keim
- Department of Chemistry, Duke University, Durham, North Carolina, USA
| | - Kuan-Yi Lu
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Grace Z Wang
- Department of Chemistry, Duke University, Durham, North Carolina, USA
| | - Philip F Hughes
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | | | - Timothy A Haystead
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | - Emily R Derbyshire
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
- Department of Chemistry, Duke University, Durham, North Carolina, USA
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16
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Tsoukalas N, Aravantinou-Fatorou E, Baxevanos P, Tolia M, Tsapakidis K, Galanopoulos M, Liontos M, Kyrgias G. Advanced small cell lung cancer (SCLC): new challenges and new expectations. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:145. [PMID: 29862234 DOI: 10.21037/atm.2018.03.31] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Small cell lung cancer (SCLC) remains one of the most lethal malignancies and a major health riddle. The therapeutic options are limited. The combination of etoposide or irinotecan with platinum chemotherapy is the standard of care at any stage. The last decade systemic efforts have been done to reveal specific therapeutic targets for small cell lung carcinomas. In this review, we focus on the new therapeutic strategies of SCLC, including immune-related treatment that may change the prognosis of the disease. The main genetic mutations observed in SCLC are TP53 and RB1 mutations; however, it is well known that these molecules are not yet targetable. In recent years, research has revealed other frequent genetic alterations and activated signaling pathways that might be an effective treatment target. Loss of PTEN, activating PI3K mutations, inhibition of NOTCH pathway and aurora kinase activation are among them. Moreover, FDGFR1 amplification, activation of the Hedgehog pathway and repair-protein PARP1 seem to participate in SCLC tumorigenesis. These new findings have identified some interesting targets. Moreover, immunotherapy tries to find its place in the treatment of SCLC. Immune checkpoint inhibitors are under investigation in phase I to III clinical trials. We hope that in next years the treatment of SCLC patients will be improved with the administration of targeting therapy and the introduction of immunotherapy.
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Affiliation(s)
| | | | | | - Maria Tolia
- Department of Radiotherapy-Radiation Oncology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Konstantinos Tsapakidis
- Department of Oncology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | | | - Michail Liontos
- Department of Oncology, Alexandra General Hospital, Athens, Greece
| | - George Kyrgias
- Department of Radiotherapy-Radiation Oncology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
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17
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Subramaniam DS, Liu SV, Crawford J, Kramer J, Thompson J, Wang H, Giaccone G. A Phase Ib/II Study of Ganetespib With Doxorubicin in Advanced Solid Tumors Including Relapsed-Refractory Small Cell Lung Cancer. Front Oncol 2018; 8:64. [PMID: 29594044 PMCID: PMC5858550 DOI: 10.3389/fonc.2018.00064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 02/27/2018] [Indexed: 02/01/2023] Open
Abstract
Introduction Small cell lung cancer (SCLC) accounts for 15% of all lung cancers and is characterized by high response rates to cytotoxic chemotherapy and equally high rates of relapse. Many resistance mechanisms have been proposed including resistance to doxorubicin via induction of a heat shock response. Ganetespib is a novel and potent non-geldanamycin heat shock protein 90 (Hsp90) inhibitor. In preclinical studies, synergy between ganetespib and doxorubicin was shown. We conducted a phase Ib/II study of the safety, tolerability, and preliminary efficacy of the combination of ganetespib and doxorubicin. Methods Patients eligible for the phase Ib portion had advanced tumors that would be appropriate for doxorubicin therapy and those in the phase II portion had relapsed or refractory SCLC. All patients had an ECOG performance status, 0–1 and adequate organ function, including a cardiac ejection fraction ≥50%. Patients who received a lifetime cumulative doxorubicin dose of >150 mg/m2 or who had symptomatic brain metastases were excluded. Patients received ganetespib on Days 1 and 8 and doxorubicin 50 mg/m2 on day 1 in 21-day cycles. Results Eleven patients were enrolled including nine in the phase Ib dose escalation and two in the phase II expansion. The study was terminated by the sponsor. The dose recommended for future study is ganetespib 150 mg/m2 in combination with doxorubicin at a dose of 50 mg/m2. The most common adverse events of the combination were grade 1/2 diarrhea, nausea, fatigue, and transaminitis. No dose limiting toxicities were observed. Response rate was 25% and median duration of response was 137 days. Conclusion Ganetespib plus doxorubicin was a well-tolerated combination and there remains potential for the clinical development of Hsp90 inhibitors in SCLC. Clinical Trial Registration https://ClinicalTrials.gov/ct2/show/NCT02261805, identifier NCT02261805.
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Affiliation(s)
| | - Stephen V Liu
- MedStar Georgetown University Hospital, Washington, DC, United States
| | | | - Jenna Kramer
- MedStar Georgetown University Hospital, Washington, DC, United States
| | - Jillian Thompson
- MedStar Georgetown University Hospital, Washington, DC, United States
| | - Hongkun Wang
- Georgetown University, Washington, DC, United States
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18
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di Martino S, Amoreo CA, Nuvoli B, Galati R, Strano S, Facciolo F, Alessandrini G, Pass HI, Ciliberto G, Blandino G, De Maria R, Cioce M. HSP90 inhibition alters the chemotherapy-driven rearrangement of the oncogenic secretome. Oncogene 2018; 37:1369-1385. [PMID: 29311642 DOI: 10.1038/s41388-017-0044-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/24/2017] [Accepted: 09/10/2017] [Indexed: 12/29/2022]
Abstract
Adaptive resistance to therapy is a hallmark of cancer progression. To date, it is not entirely clear how microenvironmental stimuli would mediate emergence of therapy-resistant cell subpopulations, although a rearrangement of the cancer cell secretome following therapy-induced stress can be pivotal for such a process. Here, by using the highly chemoresistant malignant pleural mesothelioma (MPM) as an experimental model, we unveiled a key contribution of the chaperone HSP90 at assisting a chemotherapy-instigated Senescence-Associated-Secretory-Phenotype (SASP). Thus, administration of a clinical trial grade, HSP90, inhibitor blunted the release of several cytokines by the chemotherapy-treated MPM cells, including interleukin (IL)-8. Reduction of IL-8 levels hampered the FAK-AKT signaling and inhibited 3D growth and migration. This correlated with downregulation of key EMT and chemoresistance genes and affected the survival of chemoresistant ALDHbright cell subpopulations. Altogether, inhibition of HSP90 provoked a switch from a pro-tumorigenic SASP to a pro-apoptotic senescence status, thus resulting in chemosensitizing effects. In mouse xenografts treated with first-line agents, inhibiting HSP90 blunted FAK activation and reduced the expression of ALDH1A3 and the levels of circulating human IL-8, these latter strongly correlating with the effect on tumor growth. We validated the above findings in primary mesothelioma cultures, a more clinically relevant model. We unveiled here a key contribution of the chaperone HSP90 at assisting the secretory stress in chemotherapy-treated cells, which may warrant further investigation in combinatorial therapeutic settings.
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Affiliation(s)
- Simona di Martino
- Oncogenomic and Epigenetic Unit Regina Elena National Cancer Institute, Rome, Italy
| | | | - Barbara Nuvoli
- Preclinical Models and New Therapeutic Agents Unit, Regina Elena National Cancer Institute, Rome, Italy
| | - Rossella Galati
- Preclinical Models and New Therapeutic Agents Unit, Regina Elena National Cancer Institute, Rome, Italy
| | - Sabrina Strano
- Molecular Chemoprevention Unit, Regina Elena National Cancer Institute, Rome, Italy.,Department of Oncology, McMaster University, Hamilton, ON, Canada
| | - Francesco Facciolo
- Department of Thoracic Surgery, Regina Elena National Cancer Institute, Rome, Italy
| | | | - Harvey I Pass
- New York University School of Medicine, Department of Cardiothoracic Surgery, New York, NY, USA
| | - Gennaro Ciliberto
- Scientific Direction, Regina Elena National Cancer Institute, Rome, Italy
| | - Giovanni Blandino
- Oncogenomic and Epigenetic Unit Regina Elena National Cancer Institute, Rome, Italy.,Department of Oncology, McMaster University, Hamilton, ON, Canada
| | - Ruggero De Maria
- Scientific Direction, Regina Elena National Cancer Institute, Rome, Italy. .,Current address: Institute of General Pathology, Catholic University and Gemelli Polyclinic, Rome, Italy.
| | - Mario Cioce
- Oncogenomic and Epigenetic Unit Regina Elena National Cancer Institute, Rome, Italy.
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19
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Du Y, Wu J, Luo L. Secreted Heat Shock Protein 90α Attenuated the Effect of Anticancer Drugs in Small-Cell Lung Cancer Cells Through AKT/GSK3β/β-Catenin Signaling. Cancer Control 2018; 25:1073274818804489. [PMID: 30282477 PMCID: PMC6172942 DOI: 10.1177/1073274818804489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/24/2018] [Accepted: 09/07/2018] [Indexed: 01/07/2023] Open
Abstract
Small-cell lung cancer (SCLC) represents the progressive form of lung cancer. Patients with SCLC have poor prognosis, partially due to drug resistance. Therefore, understanding the underlying mechanism for drug resistance in SCLC is needed to improve clinical outcomes. The concentrations of heat shock protein 90α (HSP90α) in medium were detected by enzyme-linked immunosorbent assay. The protein levels were detected by Western blot. Cell apoptosis was detected by propidium iodide staining in cell lines or terminal deoxynucleotidyl transferase dUTP nick end labeling staining in tumor sections. Doxorubicin (DOX) was administered into cultured cell lines or intraperitoneally injected into xenograft mouse to induce apoptosis. In SCLC cell lines, either DOX or ABT-737 increased extracellular HSP90α levels, which attenuated the percentage of apoptotic cells. Extracellular HSP90α activated Ak strain transforming (AKT) and β-catenin signaling and inhibited glycogen synthase kinase 3β (GSK3β) signaling. In the xenograft mouse model, extracellular HSP90α promoted tumor development and inhibited apoptosis of tumor cells. Heat shock protein 90α attenuates the efficacy of anticancer drugs in SCLC cells through AKT/GSK3β/β-catenin signaling.
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Affiliation(s)
- Yingying Du
- Department of Oncology, First Affiliated Hospital of Anhui Medical
University, Hefei, Anhui, China
| | - Jin Wu
- Central Laboratory, First Affiliated Hospital of Anhui Medical
University, Hefei, Anhui, China
| | - Le Luo
- AnHui IsoTex Biotech Co, Xuancheng, China
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20
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Carr AC, Khaled AS, Bassiouni R, Flores O, Nierenberg D, Bhatti H, Vishnubhotla P, Manuel JP, Santra S, Khaled AR. Targeting chaperonin containing TCP1 (CCT) as a molecular therapeutic for small cell lung cancer. Oncotarget 2017; 8:110273-110288. [PMID: 29299146 PMCID: PMC5746381 DOI: 10.18632/oncotarget.22681] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 11/05/2017] [Indexed: 12/20/2022] Open
Abstract
Identifying new druggable targets is desired to meet the needs for effective cancer treatments. To this end, we previously reported the efficacy of a therapeutic peptide called CT20p that displays selective cytotoxicity through inhibition of a multi-subunit, protein-folding complex called Chaperonin-Containing TCP-1 (CCT). To investigate the role of CCT in cancer progression, we examined protein levels of CCT subunits in liver, prostate, and lung cancer using human tissue microarrays. We found that these cancers expressed higher levels of CCT2 as compared to normal tissues. Small cell lung cancer (SCLC) stood out as having statistically significant difference in CCT2. Higher levels of CCT2 in tumors from lung cancer patients were also associated with decreased survival. Using SCLC cell lines, we observed detectable amounts of CCT subunits and cells were susceptible to killing by CT20p. Treatment with CT20p, delivered to cells using polymeric nanoparticles, was cytotoxic to all SCLC cell lines, decreasing the levels of CCT client proteins like STAT3. In contrast, treatment with a STAT3 inhibitor was effective in one of the SCLC cell lines. While we found that CCT levels could vary in cell lines, normal tissues had low levels of CCT and minimal toxicity to liver or kidney function was observed in mice treated with CT20p. These results indicate that in SCLC, changes in CCT levels could be used as a biomarker for diagnosis and that targeting CCT for inhibition with CT20p is a promising treatment approach for those cancers such as SCLC that currently lack targeted therapeutics.
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Affiliation(s)
- Ana C. Carr
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Amr S. Khaled
- Department of Pathology and Laboratory Medicine, Department of Internal Medicine, Orlando VA Medical Center, Orlando, FL 32803, USA
| | - Rania Bassiouni
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Orielyz Flores
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Daniel Nierenberg
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Hammad Bhatti
- Department of Pathology and Laboratory Medicine, Department of Internal Medicine, Orlando VA Medical Center, Orlando, FL 32803, USA
| | - Priya Vishnubhotla
- Department of Pathology and Laboratory Medicine, Department of Internal Medicine, Orlando VA Medical Center, Orlando, FL 32803, USA
| | - J. Perez Manuel
- Biomedical Imaging Research Institute, & Samuel Oschin Comprehensive Cancer Institute, Department of Biomedical Sciences and Department of Neurosurgery, Cedar Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Santimukul Santra
- Department of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USA
| | - Annette R. Khaled
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
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21
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Kimura A, Ogata K, Altan B, Yokobori T, Mochiki E, Yanai M, Kogure N, Yanoma T, Suzuki M, Bai T, Kuwano H. Nuclear heat shock protein 110 expression is associated with poor prognosis and hyperthermo-chemotherapy resistance in gastric cancer patients with peritoneal metastasis. World J Gastroenterol 2017; 23:7541-7550. [PMID: 29204054 PMCID: PMC5698247 DOI: 10.3748/wjg.v23.i42.7541] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/08/2017] [Accepted: 09/19/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the significance of heat shock protein 110 (HSP110) in gastric cancer (GC) patients with peritoneal metastasis undergoing hyperthermo-chemotherapy.
METHODS Primary GC patients (n = 14) with peritoneal metastasis or positive peritoneal lavage cytology who underwent distal or total gastrectomy between April 2000 and December 2011 were enrolled in this study. The patients underwent postoperative intraperitoneal hyperthermo-chemotherapy using a Thermotron RF-8 heating device two weeks after surgery. We analyzed nuclear HSP110 expression in surgically resected tumors using immunohistochemistry. Additionally, the effect of HSP110 suppression on hyptherthermo-chemosensitivity was assessed in vitro in the MKN45 GC cell line using the HSP inhibitor KNK437.
RESULTS HSP110 immnohistochemical staining in 14 GC patients showed that five (35.7%) samples belonged to the low expression group, and nine (64.3%) samples belonged to the high expression group. Progression-free survival was significantly shorter in the HSP110 high-expression group than in the low-expression group (P = 0.0313). However, no significant relationships were identified between HSP110 expression and the clinicopathological characteristics of patients. Furthermore, high HSP110 expression was not an independent prognostic factor in GC patients with peritoneal metastasis (P = 0.0625). HSP110 expression in MKN45 cells was suppressed by KNK437 at the hyperthermic temperature of 43 °C in vitro. Comparison of MKN45 cell proliferation in the presence and absence of KNK437 at 43 °C, revealed that proliferation was significantly decreased when HSP110 was inhibited by KNK437. Additionally, HSP110 suppression via HSP inhibitor treatment increased cellular sensitivity to hyperthermo-chemotherapy in vitro.
CONCLUSION The expression of nuclear HSP110 in GC patients might be a new marker of chemosensitivity and a therapeutic target for patients who are tolerant to existing hyperthermo-chemotherapies.
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Affiliation(s)
- Akiharu Kimura
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Kyoichi Ogata
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Bolag Altan
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
- Department of Oncology Clinical Development, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Takehiko Yokobori
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
- Department of Molecular Pharmacology and Oncology, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Erito Mochiki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama 350-0844, Japan
| | - Mitsuhiro Yanai
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Norimichi Kogure
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Toru Yanoma
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Masaki Suzuki
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Tuya Bai
- and Hiroyuki Kuwano, Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
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22
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Lee H, Saini N, Parris AB, Zhao M, Yang X. Ganetespib induces G2/M cell cycle arrest and apoptosis in gastric cancer cells through targeting of receptor tyrosine kinase signaling. Int J Oncol 2017; 51:967-974. [PMID: 28713919 PMCID: PMC5564404 DOI: 10.3892/ijo.2017.4073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/06/2017] [Indexed: 01/28/2023] Open
Abstract
Heat shock protein 90 (HSP90) regulates several important cellular processes via its repertoire of 'client proteins'. These client proteins have been found to play fundamental roles in signal transduction, cell proliferation, cell cycle progression and survival, as well as other features of malignant cells, such as invasion, tumor angiogenesis and metastasis. Thus, HSP90 is an emerging target for cancer therapy. To this end, we evaluated ganetespib (STA-9090), a novel and potent HSP90 inhibitor, for its activity in gastric cancer cell lines. Ganetespib significantly inhibited the proliferation of AGS and N87 human gastric cancer cell lines and potently induced G2/M cell cycle arrest and apoptosis. Upregulation of cleaved poly(ADP-ribose) polymerase (c-PARP), c-caspase-3, c-caspase-8 and c-caspase-9 and suppression of gastric cancer‑associated HSP90 client proteins, including ErbB2, Erk, Akt, mTOR, GSK3 and Src, were observed in ganetespib-treated cells. These findings demonstrate that the ganetespib-induced mechanism of cell growth inhibition involves the activation of death receptor and mitochondrial pathways and the inhibition of receptor tyrosine kinase signaling pathways. Our study implicates ganetespib as a potential strategy for gastric cancer treatment, which warrants further preclinical and clinical investigation.
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Affiliation(s)
- Harry Lee
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, NC 28081, USA
| | - Nipun Saini
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, NC 28081, USA
| | - Amanda B Parris
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, NC 28081, USA
| | - Ming Zhao
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, NC 28081, USA
| | - Xiaohe Yang
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, Kannapolis, NC 28081, USA
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Wu IJ, Lin RJ, Wang HC, Yuan TM, Chuang SM. TRIB3 downregulation enhances doxorubicin-induced cytotoxicity in gastric cancer cells. Arch Biochem Biophys 2017; 622:26-35. [DOI: 10.1016/j.abb.2017.04.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 04/11/2017] [Accepted: 04/21/2017] [Indexed: 01/20/2023]
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Kimura A, Ogata K, Altan B, Yokobori T, Ide M, Mochiki E, Toyomasu Y, Kogure N, Yanoma T, Suzuki M, Bai T, Oyama T, Kuwano H. Nuclear heat shock protein 110 expression is associated with poor prognosis and chemotherapy resistance in gastric cancer. Oncotarget 2017; 7:18415-23. [PMID: 26943774 PMCID: PMC4951298 DOI: 10.18632/oncotarget.7821] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 01/23/2016] [Indexed: 01/16/2023] Open
Abstract
Heat shock protein (HSP) expression is induced by the exposure to stress, such as fever, oxidative stress, chemical exposure, and irradiation. In cancer, HSP promotes the survival of malignant cells by inhibiting the induction of apoptosis. In colorectal cancer, a loss-of-function mutation of HSP110 (HSP110ΔE9) has been identified. HSP110ΔE9 inhibits the nuclear translocation of wild-type HSP110, which is important for its chaperone activity and anti-apoptotic effects. The patients carrying HSP110ΔE9 mutation exhibit high sensitivity to anticancer agents, such as oxaliplatin and 5-fluorouracil. There is still insufficient information about HSP110 localization, the clinicopathological significance of HSP110 expression, and its association with chemotherapy resistance in gastric cancer. Here, we found that high nuclear expression of HSP110 in gastric cancer tissues is associated with cancer progression, poor prognosis, and recurrence after adjuvant chemotherapy. In vitro results showed that HSP110 suppression increases the sensitivity to 5-fluorouracil and cisplatin of human gastric cancer cell lines. Our results suggest that nuclear HSP110 may be a new drug sensitivity marker for gastric cancer and a potential molecular therapeutic target for the treatment of gastric cancer patients with acquired anticancer drug resistance.
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Affiliation(s)
- Akiharu Kimura
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Kyoichi Ogata
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Bolag Altan
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Takehiko Yokobori
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Munenori Ide
- Department of Diagnostic Pathology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Erito Mochiki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Yoshitaka Toyomasu
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Norimichi Kogure
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Toru Yanoma
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masaki Suzuki
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tuya Bai
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tetsunari Oyama
- Department of Diagnostic Pathology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hiroyuki Kuwano
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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25
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Liang W, Yang C, Peng J, Qian Y, Wang Z. The Expression of HSPD1, SCUBE3, CXCL14 and Its Relations with the Prognosis in Osteosarcoma. Cell Biochem Biophys 2017; 73:763-8. [PMID: 27259322 DOI: 10.1007/s12013-015-0579-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of the study was to explore the expression of three genes, HSPD1, SCUBE3, and CXCL14, in osteosarcoma cells and tissue, as well as their association with the prognosis of patients with osteosarcoma. The expression of HSPD1, SCUBE3, and CXCL14 in osteosarcoma cells was detected by using Western blotting method. siRNA was used to knockdown the expression of the three genes. CCK8 cell proliferation assay was used to observe the effect of siRNA interference on U2OS cell proliferation. The expression of the three genes in osteosarcoma tissue was detected employing immunohistochemical method. Kaplan-Meier survival analysis was used to compare the relations between the expression of the three genes and prognosis. The Western blotting results showed that the expression of Hsp70, SCUBE3 protein, and CXCL14 chemotactic factor in osteosarcoma cells was significantly higher than that in normal osteocytes (p < 0.05). After the three genes were interfered by siRNA, the mRNA and protein expression levels of these genes in osteosarcoma cells were significantly decreased (p < 0.05). The growth rate of U2OS cell after the siRNA interference was significantly lower than that before interference and that in the control group transfected with negative control siRNA (p < 0.05). The result of immunohistochemistry demonstrated that the expression of Hsp70, SCUBE3 protein, and CXCL14 chemotactic factor in osteosarcoma tissues was significantly higher than that in adjacent muscle tissue (p < 0.05). Kaplan-Meier survival analysis indicated that the survival rate of the patients with high expression of those three kinds of genes was obviously lower than that of other patients (p < 0.05). There was no significant difference between the survival rates of patients with high or low expression of two genes (p > 0.05). The expression of HSPD1, SCUBE3, and CXCL14 was all high in osteosarcoma tissues and cells; moreover, the three kinds of genes had close correlations with the prognosis of the patients. Targeted inhibition of these three genes could inhibit the proliferation of the tumor, which may become a new therapeutic target.
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Affiliation(s)
- Wenqing Liang
- Department of Orthopaedics, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, People's Republic of China
| | - Chengwei Yang
- Department of Spinal Surgery, Lanzhou General Hospital, Lanzhou Military Area Command, 333 Nanbinhe Road, Lanzhou, 730050, People's Republic of China
| | - Jiahao Peng
- Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017, People's Republic of China
| | - Yu Qian
- Department of Orthopaedics, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, People's Republic of China
| | - Zirui Wang
- East Medical Area, Internal Medicine Ward, Linyi People's Hospital, 27#Jiefang Road, Linyi City, 276000, Shandong Province, People's Republic of China.
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26
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Dalbergioidin Ameliorates Doxorubicin-Induced Renal Fibrosis by Suppressing the TGF- β Signal Pathway. Mediators Inflamm 2016; 2016:5147571. [PMID: 28100935 PMCID: PMC5214096 DOI: 10.1155/2016/5147571] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/21/2016] [Indexed: 12/24/2022] Open
Abstract
We investigated the effect of Dalbergioidin (DAL), a well-known natural product extracted from Uraria crinita, on doxorubicin- (DXR-) induced renal fibrosis in mice. The mice were pretreated for 7 days with DAL followed by a single injection of DXR (10 mg/kg) via the tail vein. Renal function was analyzed 5 weeks after DXR treatment. DXR caused nephrotoxicity. The symptoms of nephrotic syndrome were greatly improved after DAL treatment. The indices of renal fibrosis, the phosphorylation of Smad3, and the expression of alpha-smooth muscle actin (α-SMA), fibronectin, collagen III (Col III), E-cadherin, TGF-β, and Smad7 in response to DXR were all similarly modified by DAL. The present findings suggest that DAL improved the markers for kidney damage investigated in this model of DXR-induced experimental nephrotoxicity.
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27
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Subramaniam DS, Warner EA, Giaccone G. Ganetespib for small cell lung cancer. Expert Opin Investig Drugs 2016; 26:103-108. [DOI: 10.1080/13543784.2017.1268599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Eiran A. Warner
- Division of Hematology-Oncology, Georgetown University, Washington, DC, USA
| | - Giuseppe Giaccone
- Division of Hematology-Oncology, Georgetown University, Washington, DC, USA
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28
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Gaponova AV, Nikonova AS, Deneka A, Kopp MC, Kudinov AE, Skobeleva N, Khazak V, Ogawa LS, Cai KQ, Duncan KE, Duncan JS, Egleston BL, Proia DA, Boumber Y, Golemis EA. A Novel HSP90 Inhibitor-Drug Conjugate to SN38 Is Highly Effective in Small Cell Lung Cancer. Clin Cancer Res 2016; 22:5120-5129. [PMID: 27267850 DOI: 10.1158/1078-0432.ccr-15-3068] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 05/26/2016] [Indexed: 01/08/2023]
Abstract
PURPOSE Small cell lung cancer (SCLC) is a highly aggressive disease representing 12% to 13% of total lung cancers, with median survival of <2 years. No targeted therapies have proven effective in SCLC. Although most patients respond initially to cytotoxic chemotherapies, resistance rapidly emerges, response to second-line agents is limited, and dose-limiting toxicities (DLT) are a major issue. This study performs preclinical evaluation of a new compound, STA-8666, in SCLC. EXPERIMENTAL DESIGN To avoid DLT for useful cytotoxic agents, the recently developed drug STA-8666 combines a chemical moiety targeting active HSP90 (concentrated in tumors) fused via cleavable linker to SN38, the active metabolite of irinotecan. We compare potency and mechanism of action of STA-8666 and irinotecan in vitro and in vivo RESULTS: In two SCLC xenograft and patient-derived xenograft models, STA-8666 was tolerated without side effects up to 150 mg/kg. At this dose, STA-8666 controlled or eliminated established tumors whether used in a first-line setting or in tumors that had progressed following treatment on standard first- and second-line agents for SCLC. At 50 mg/kg, STA-8666 strongly enhanced the action of carboplatin. Pharmacokinetic profiling confirmed durable STA-8666 exposure in tumors compared with irinotecan. STA-8666 induced a more rapid, robust, and stable induction of cell-cycle arrest, expression of signaling proteins associated with DNA damage and cell-cycle checkpoints, and apoptosis in vitro and in vivo, in comparison with irinotecan. CONCLUSIONS Together, these results strongly support clinical development of STA-8666 for use in the first- or second-line setting for SCLC. Clin Cancer Res; 22(20); 5120-9. ©2016 AACR.
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Affiliation(s)
- Anna V Gaponova
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.,Department of Biochemistry, Kazan Federal University, Kazan 420008, Russia
| | - Anna S Nikonova
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Alexander Deneka
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.,Department of Biochemistry, Kazan Federal University, Kazan 420008, Russia
| | - Meghan C Kopp
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.,Program in Molecular and Cell Biology and Genetics, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Alexander E Kudinov
- University of New Mexico Comprehensive Cancer Center, University of New Mexico School of Medicine, Division of Hematology/Oncology, Department of Internal Medicine, Albuquerque, NM 87131
| | - Natalia Skobeleva
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | | | - Kathy Q Cai
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Kelly E Duncan
- Program in Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - James S Duncan
- Program in Cancer Biology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Brian L Egleston
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | - Yanis Boumber
- University of New Mexico Comprehensive Cancer Center, University of New Mexico School of Medicine, Division of Hematology/Oncology, Department of Internal Medicine, Albuquerque, NM 87131
| | - Erica A Golemis
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
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29
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Howe MK, Speer BL, Hughes PF, Loiselle DR, Vasudevan S, Haystead TAJ. An inducible heat shock protein 70 small molecule inhibitor demonstrates anti-dengue virus activity, validating Hsp70 as a host antiviral target. Antiviral Res 2016; 130:81-92. [PMID: 27058774 DOI: 10.1016/j.antiviral.2016.03.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/31/2016] [Accepted: 03/31/2016] [Indexed: 12/27/2022]
Abstract
An estimated three billion people are at risk of Dengue virus (DENV) infection worldwide and there are currently no approved therapeutic interventions for DENV infection. Due to the relatively small size of the DENV genome, DENV is reliant on host factors throughout the viral life cycle. The inducible form of Heat Shock Protein 70 (Hsp70i) has been implicated as a host factor in DENV pathogenesis, however the complete role remains to be elucidated. Here we further illustrate the importance of Hsp70i in dengue virus pathogenesis and describe the antiviral activity of the allosteric small molecule inhibitor that is selective for Hsp70i, called HS-72. In monocytes, Hsp70i is expressed at low levels preceding DENV infection, but Hsp70i expression is induced upon DENV infection. Targeting Hsp70i with HS-72, results in a dose dependent reduction in DENV infected monocytes, while cell viability was maintained. HS-72 works to reduce DENV infection by inhibiting the entry stage of the viral life cycle, through disrupting the association of Hsp70i with the DENV receptor complex. This work highlights Hsp70i as an antiviral target and HS-72 as a potential anti-DENV therapeutic agent.
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Affiliation(s)
- Matthew K Howe
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Brittany L Speer
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Philip F Hughes
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - David R Loiselle
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Subhash Vasudevan
- Emerging Infectious Diseases Program, Duke-NUS Graduate and Medical School, Singapore
| | - Timothy A J Haystead
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA.
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30
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Salinomycin decreases doxorubicin resistance in hepatocellular carcinoma cells by inhibiting the β-catenin/TCF complex association via FOXO3a activation. Oncotarget 2016; 6:10350-65. [PMID: 25871400 PMCID: PMC4496360 DOI: 10.18632/oncotarget.3585] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 02/13/2015] [Indexed: 12/17/2022] Open
Abstract
Doxorubicin is a conventional and effective chemotherapy drug against hepatocellular carcinoma (HCC). However, during long-term doxorubicin monotherapy, HCC cells may eventually develop acquired-resistance to doxorubicin which results in recurrence and a poor prognosis. Salinomycin, an ionophore antibiotic, was recently reported to selectively kill human cancer stem cells (CSCs) which were response for chemoresistance. In this study, salinomycin was found to exert synergistic cytotoxicity with doxorubicin in HCC cells and be capable of inhibiting doxorubicin-induced epithelial-mesenchymal transition (EMT), an important cellular process involved in the acquired chemoresistance of tumors. Further experiments revealed that FOXO3a, a multifunctional transcription factor that can be activated by salinomycin, was vital in mediating doxorubicin-induced EMT. In addition, activated FOXO3a disturbed the interaction between β-catenin and TCF and inhibited the expression of β-catenin/TCF target genes (ZEB1, c-Myc and CyclinD1), which played important roles in doxorubicin-induced EMT in HCC cells. Finally, the enhanced curative efficacy of combination treatment of doxorubicin and salinomycin for HCC was confirmed in established xenograft models. In summary, the present study identifies a new doxorubicin-based chemotherapy for advanced HCC and provides a potential anti-cancer strategy targeting FOXO3a and related cell pathway molecules.
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31
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Santarpia M, Daffinà MG, Karachaliou N, González-Cao M, Lazzari C, Altavilla G, Rosell R. Targeted drugs in small-cell lung cancer. Transl Lung Cancer Res 2016; 5:51-70. [PMID: 26958493 DOI: 10.3978/j.issn.2218-6751.2016.01.12] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In contrast to non-small-cell lung cancer (NSCLC), few advances have been made in systemic treatment of small-cell lung cancer (SCLC) in recent years. Most patients are diagnosed with extensive stage disease and are commonly treated with platinum-based chemotherapy which, although attaining high initial objective responses, has a limited impact on survival. Due to the dismal prognosis of SCLC, novel and more effective treatment strategies are urgently needed. A deeper characterization of the genomic landscape of SCLC has led to the development of rational and promising targeted agents. However, despite a large number of clinical trials, results have been disappointing and there are still no approved targeted drugs for SCLC. Recent comprehensive genomic studies suggest SCLC is a heterogeneous disease, characterized by genomic alterations targeting a broad variety of genes, including those involved in transcription regulation and chromatin modification which seem to be a hallmark of this specific lung cancer subtype. Current research efforts are focusing on further understanding of the cellular and molecular abnormalities underlying SCLC development, progression and resistance to chemotherapy. Unraveling the genomic complexity of SCLC could be the key to optimize existing treatments, including chemotherapy and radiotherapy, and for identifying those patients most likely to benefit from selected targeted therapeutic approaches.
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Affiliation(s)
- Mariacarmela Santarpia
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Maria Grazia Daffinà
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Niki Karachaliou
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Maria González-Cao
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Chiara Lazzari
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Giuseppe Altavilla
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
| | - Rafael Rosell
- 1 Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, Messina, Italy ; 2 Dr Rosell Oncology Institute, Quirón Dexeus University Hospital, Barcelona, Spain ; 3 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy ; 4 Pangaea Biotech, Barcelona, Spain ; 5 Cancer Biology and Precision Medicine Program, Catalan Institute of Oncology, Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain ; 6 Germans Trias i Pujol Health Sciences Institute and Hospital, Campus Can Ruti, Badalona, Barcelona, Spain ; 7 Molecular Oncology Research (MORe) Foundation, Barcelona, Spain
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Takeuchi S, Fukuda K, Arai S, Nanjo S, Kita K, Yamada T, Hara E, Nishihara H, Uehara H, Yano S. Organ-specific efficacy of HSP90 inhibitor in multiple-organ metastasis model of chemorefractory small cell lung cancer. Int J Cancer 2015; 138:1281-9. [DOI: 10.1002/ijc.29858] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 09/04/2015] [Indexed: 02/02/2023]
Affiliation(s)
- Shinji Takeuchi
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Koji Fukuda
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Sachiko Arai
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Shigeki Nanjo
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Kenji Kita
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Tadaaki Yamada
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
| | - Eiji Hara
- Division of Cancer Biology; the Cancer Institute, Japanese Foundation for Cancer Research; Koto-Ku Tokyo Japan
| | - Hiroshi Nishihara
- Department of Pathology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Hisanori Uehara
- Department of Molecular and Environmental Pathology; Institute of Health Biosciences, the University of Tokushima Graduate School; Tokushima Japan
| | - Seiji Yano
- Division of Medical Oncology; Cancer Research Institute, Kanazawa University; Kanazawa Japan
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Mei L, Chen Y, Wang Z, Wang J, Wan J, Yu C, Liu X, Li W. Synergistic anti-tumour effects of tetrandrine and chloroquine combination therapy in human cancer: a potential antagonistic role for p21. Br J Pharmacol 2015; 172:2232-45. [PMID: 25521075 DOI: 10.1111/bph.13045] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 10/28/2014] [Accepted: 12/03/2014] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Tetrandrine, a bisbenzylisoquinoline alkaloid isolated from the Chinese medicinal herb Stephaniae tetrandrae, has a long history in Chinese clinical applications to treat diverse diseases. Tetrandrine induced apoptosis or, at low concentrations, autophagy of human hepatocellular carcinoma cells. Here we have tested the effects of inhibitors of autophagy such as chloroquine, on the response to low concentrations of tetrandrine in cancer cells. EXPERIMENTAL APPROACH Cultures of several cancer cell lines, including Huh7, U251, HCT116 and A549 cells, were exposed to tetrandrine, chloroquine or a combination of these compounds. Cell viability and content of reactive oxygen species (ROS) were measured and synergy assessed by calculation of the combination index. Western blot and RT-PCR assays were also used along with fluorescence microscopy and histochemical techniques. KEY RESULTS Combinations of tetrandrine and chloroquine were more cytotoxic than the same concentrations used separately and these effects showed synergy. Such effects involved increased ROS generation and were dependent on caspase-3 but independent of Akt activity. Blockade of tetrandrine-induced autophagy with 3-methyladenine or bafilomycin-A1 induced apoptosis in cancer cells. Lack of p21 protein (p21(-/-) HCT116 cells) increased sensitivity to the apoptotic effects of the combination of tetrandrine and chloroquine. In a tumour xenograft model in mice, combined treatment with tetrandrine and chloroquine induced ROS accumulation and cell apoptosis, and decreased tumour growth. CONCLUSIONS AND IMPLICATIONS The combinations of tetrandrine and chloroquine exhibited synergistic anti-tumour activity, in vitro and in vivo. Our results suggest a novel therapeutic strategy for tumour treatment.
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Affiliation(s)
- Liufeng Mei
- College of Life Sciences, Wuhan University, Wuhan, China
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Arcaro A. Targeted therapies for small cell lung cancer: Where do we stand? Crit Rev Oncol Hematol 2015; 95:154-64. [PMID: 25800975 DOI: 10.1016/j.critrevonc.2015.03.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/23/2015] [Accepted: 03/04/2015] [Indexed: 12/19/2022] Open
Abstract
Small cell lung cancer (SCLC) accounts for 15% of lung cancer cases and is associated with a dismal prognosis. Standard therapeutic regimens have been improved over the past decades, but without a major impact on patient survival. The development of targeted therapies based on a better understanding of the molecular basis of the disease is urgently needed. At the genetic level, SCLC appears very heterogenous, although somatic mutations targeting classical oncogenes and tumor suppressors have been reported. SCLC also possesses somatic mutations in many other cancer genes, including transcription factors, enzymes involved in chromatin modification, receptor tyrosine kinases and their downstream signaling components. Several avenues have been explored to develop targeted therapies for SCLC. So far, however, there has been limited success with these targeted approaches in clinical trials. Further progress in the optimization of targeted therapies for SCLC will require the development of more personalized approaches for the patients.
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Affiliation(s)
- Alexandre Arcaro
- Department of Clinical Research, University of Bern, CH-3010 Bern, Switzerland.
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Zhao Z, Zhang L, Yao Q, Tao Z. miR-15b regulates cisplatin resistance and metastasis by targeting PEBP4 in human lung adenocarcinoma cells. Cancer Gene Ther 2015; 22:108-14. [PMID: 25721211 DOI: 10.1038/cgt.2014.73] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 10/14/2014] [Accepted: 10/16/2014] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) have been identified as important posttranscriptional regulators involved in various biological and pathological processes of cells, but their association with tumor chemoresistance has not been fully understood. We detected miR-15b expression in two lung adenocarcinoma cell lines, A549 and A549/CDDP, and then investigated the effects of miR-15b on the metastasis and the chemosensitivity of cancer cells, using both gain- and loss-of-function studies. The correlation between miR-15b level and chemoresistance was further investigated in clinical lung adenocarcinoma specimens. miR-15b was significantly upregulated in cisplatin-resistant lung adenocarcinoma A549/CDDP cells compared with parental A549 cells. miR-15b regulates epithelial-mesenchymal transition (EMT) and cisplatin resistance in vitro and modulates response of lung adenocarcinoma cells to cisplatin in vivo. Further studies identified phosphatidylethanolamine-binding protein 4 (PEBP4) as a direct and functional target of miR-15b. Small-interfering RNA-mediated PEBP4 knockdown revealed similar effects as that of ectopic miR-15b expression, whereas overexpression of PEBP4 attenuated the function of miR-15b in lung adenocarcinoma cells. Increased miR-15b expression was also detected in tumor tissues sampled from lung adenocarcinoma patients treated with cisplatin-based chemotherapy and was proved to be correlated with low expression of PEBP4, decreased sensitivity to cisplatin and poor prognosis. Our results suggest that upregulation of miR-15b could suppress PEBP4 expression and in turn contribute to chemoresistance of lung adenocarcinoma cells to cisplatin.
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Affiliation(s)
- Z Zhao
- Cancer Center, The General Hospital of Chengdu Military Region, Chengdu, China
| | - L Zhang
- Cancer Center, The General Hospital of Chengdu Military Region, Chengdu, China
| | - Q Yao
- Cancer Center, The General Hospital of Chengdu Military Region, Chengdu, China
| | - Z Tao
- Cancer Center, The General Hospital of Chengdu Military Region, Chengdu, China
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36
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Synthesis and biological evaluation of geldanamycin analogs against human cancer cells. Cancer Chemother Pharmacol 2015; 75:773-82. [DOI: 10.1007/s00280-015-2696-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 01/31/2015] [Indexed: 12/31/2022]
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Desale SS, Raja SM, Kim JO, Mohapatra B, Soni KS, Luan H, Williams SH, Bielecki TA, Feng D, Storck M, Band V, Cohen SM, Band H, Bronich TK. Polypeptide-based nanogels co-encapsulating a synergistic combination of doxorubicin with 17-AAG show potent anti-tumor activity in ErbB2-driven breast cancer models. J Control Release 2015; 208:59-66. [PMID: 25660204 DOI: 10.1016/j.jconrel.2015.02.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 02/02/2015] [Indexed: 12/29/2022]
Abstract
ErbB2-driven breast cancers constitute 20-25% of the cases diagnosed within the USA. The humanized anti-ErbB2 monoclonal antibody, Trastuzumab (Herceptin™; Genentech), with chemotherapy is the current standard of treatment. Novel agents and strategies continue to be explored, given the challenges posed by Trastuzumab-resistance development in most patients. The HSP90 inhibitor, 17-allylaminodemethoxygeldanamycin (17-AAG), which induces ErbB2 degradation and attenuates downstream oncogenic signaling, is one such agent that showed significant promise in early phase I and II clinical trials. Its low water solubility, potential toxicities and undesirable side effects observed in patients, partly due to the Cremophor-based formulation, have been discouraging factors in the advancement of this promising drug into clinical use. Encapsulation of 17-AAG into polymeric nanoparticle formulations, particularly in synergistic combination with conventional chemotherapeutics, represents an alternative approach to overcome these problems. Herein, we report an efficient co-encapsulation of 17-AAG and doxorubicin, a clinically well-established and effective modality in breast cancer treatment, into biodegradable and biocompatible polypeptide-based nanogels. Dual drug-loaded nanogels displayed potent cytotoxicity in a breast cancer cell panel and exerted selective synergistic anticancer activity against ErbB2-overexpressing breast cancer cell lines. Analysis of ErbB2 degradation confirmed efficient 17-AAG release from nanogels with activity comparable to free 17-AAG. Furthermore, nanogels containing both 17-AAG and doxorubicin exhibited superior antitumor efficacy in vivo in an ErbB2-driven xenograft model compared to the combination of free drugs. These studies demonstrate that polypeptide-based nanogels can serve as novel nanocarriers for encapsulating 17-AAG along with other chemotherapeutics, providing an opportunity to overcome solubility issues and thereby exploit its full potential as an anti-cancer agent.
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Affiliation(s)
- Swapnil S Desale
- Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, United States
| | - Srikumar M Raja
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States.
| | - Jong Oh Kim
- Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, United States; College of Pharmacy, Yeungnam University, Gyeongsan 712-749, South Korea
| | - Bhopal Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Kruti S Soni
- Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, United States
| | - Haitao Luan
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Stetson H Williams
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Timothy A Bielecki
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Dan Feng
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Matthew Storck
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States
| | - Vimla Band
- Department of Genetics, Cell Biology and Anatomy, UNMC, United States
| | - Samuel M Cohen
- Department of Pathology and Microbiology, UNMC, United States
| | - Hamid Band
- Eppley Institute for Research in Cancer and Allied Diseases, UNMC, United States.
| | - Tatiana K Bronich
- Department of Pharmaceutical Sciences and Center for Drug Delivery and Nanomedicine, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, United States.
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Lilja A, Weeden CE, McArthur K, Nguyen T, Donald A, Wong ZX, Dousha L, Bozinovski S, Vlahos R, Burns CJ, Asselin-Labat ML, Anderson GP. HSP90 inhibition suppresses lipopolysaccharide-induced lung inflammation in vivo. PLoS One 2015; 10:e0114975. [PMID: 25615645 PMCID: PMC4304786 DOI: 10.1371/journal.pone.0114975] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 11/15/2014] [Indexed: 11/18/2022] Open
Abstract
Inflammation is an important component of cancer diathesis and treatment-refractory inflammation is a feature of many chronic degenerative lung diseases. HSP90 is a 90kDa protein which functions as an ATP-dependent molecular chaperone that regulates the signalling conformation and expression of multiple protein client proteins especially oncogenic mediators. HSP90 inhibitors are in clinical development as cancer therapies but the myeleosuppressive and neutropenic effect of first generation geldanamycin-class inhibitors has confounded studies on the effects on HSP90 inhibitors on inflammation. To address this we assessed the ability of Ganetespib, a non-geldanamycin HSP90 blocker, to suppress lipopolysaccharide (LPS)-induced cellular infiltrates, proteases and inflammatory mediator and transcriptional profiles. Ganetespib (10-100 mg/kg, i.v.) did not directly cause myelosuppression, as assessed by video micrography and basal blood cell count, but it strongly and dose-dependently suppressed LPS-induced neutrophil mobilization into blood and neutrophil- and mononuclear cell-rich steroid-refractory lung inflammation. Ganetespib also suppressed B cell and NK cell accumulation, inflammatory cytokine and chemokine induction and MMP9 levels. These data identify non-myelosuppresssive HSP90 inhibitors as potential therapies for inflammatory diseases refractory to conventional therapy, in particular those of the lung.
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Affiliation(s)
- Andrew Lilja
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
| | - Clare E. Weeden
- Division of ACRF Stem Cells and Cancer, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia
| | - Kate McArthur
- Division of Chemical Biology, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; The Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Thao Nguyen
- Division of Chemical Biology, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; The Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Alastair Donald
- Division of Chemical Biology, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; The Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Zi Xin Wong
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
| | - Lovisa Dousha
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
| | - Steve Bozinovski
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
| | - Ross Vlahos
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
| | - Christopher J. Burns
- Division of Chemical Biology, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; The Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Marie-Liesse Asselin-Labat
- Division of ACRF Stem Cells and Cancer, the Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia
- * E-mail: (GPA); (MLAL)
| | - Gary P. Anderson
- Lung Health Research Centre, Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010 VIC, Australia
- * E-mail: (GPA); (MLAL)
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