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Berthier A, Gheeraert C, Johanns M, Vinod M, Staels B, Eeckhoute J, Lefebvre P. The Molecular Circadian Clock Is a Target of Anti-cancer Translation Inhibitors. J Biol Rhythms 2024; 39:20-34. [PMID: 37872767 DOI: 10.1177/07487304231202561] [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] [Indexed: 10/25/2023]
Abstract
Circadian-paced biological processes are key to physiology and required for metabolic, immunologic, and cardiovascular homeostasis. Core circadian clock components are transcription factors whose half-life is precisely regulated, thereby controlling the intrinsic cellular circadian clock. Genetic disruption of molecular clock components generally leads to marked pathological events phenotypically affecting behavior and multiple aspects of physiology. Using a transcriptional signature similarity approach, we identified anti-cancer protein synthesis inhibitors as potent modulators of the cardiomyocyte molecular clock. Eukaryotic protein translation inhibitors, ranging from translation initiation (rocaglates, 4-EGI1, etc.) to ribosomal elongation inhibitors (homoharringtonine, puromycin, etc.), were found to potently ablate protein abundance of REV-ERBα, a repressive nuclear receptor and component of the molecular clock. These inhibitory effects were observed both in vitro and in vivo and could be extended to PER2, another component of the molecular clock. Taken together, our observations suggest that the activity spectrum of protein synthesis inhibitors, whose clinical use is contemplated not only in cancers but also in viral infections, must be extended to circadian rhythm disruption, with potential beneficial or iatrogenic effects upon acute or prolonged administration.
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Affiliation(s)
- Alexandre Berthier
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Céline Gheeraert
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Manuel Johanns
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Manjula Vinod
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Bart Staels
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Jérôme Eeckhoute
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Philippe Lefebvre
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
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Poohadsuan J, O'Doherty GA, Owattanapanich W, Kungwankiattichai S, Rojanasakul Y, Issaragrisil S, Luanpitpong S. Cardiac glycoside ouabain efficiently targets leukemic stem cell apoptotic machinery independent of cell differentiation status. Cell Commun Signal 2023; 21:283. [PMID: 37828578 PMCID: PMC10568939 DOI: 10.1186/s12964-023-01317-8] [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: 04/01/2023] [Accepted: 09/13/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Acute myeloid leukemia (AML) is an aggressive hematologic malignancy characterized by an accumulation of immature leukemic myeloblasts initiating from leukemic stem cells (LSCs)-the subpopulation that is also considered the root cause of chemotherapy resistance. Repurposing cardiac glycosides to treat cancers has gained increasing attention and supporting evidence, but how cardiac glycosides effectively target LSCs, e.g., whether it involves cell differentiation, remains largely unexplored. METHODS Digoxin, a user-designed digitoxigenin-α-L-rhamnoside (D6-MA), and ouabain were tested against various human AML-derived cells with different maturation phenotypes. Herein, we established two study models to specifically determine the effects of cardiac glycosides on LSC death and differentiation-one allowed change in dynamics of LSCs and leukemic progenitor cells (LPCs), while another maintained their undifferentiated status. Regulatory mechanisms underlying cardiac glycoside-induced cytotoxicity were investigated and linked to cell cycle distribution and apoptotic machinery. RESULTS Primitive AML cells containing CD34+ LSCs/LPCs were very responsive to nanomolar concentrations of cardiac glycosides, with ouabain showing the greatest efficiency. Ouabain preferentially induces caspase-dependent apoptosis in LSCs, independent of its cell differentiation status, as evidenced by (i) the tremendous induction of apoptosis by ouabain in AML cells that acquired less than 15% differentiation and (ii) the higher rate of apoptosis in enriched LSCs than in LPCs. We sorted LSCs and LPCs according to their cell cycle distribution into G0/G1, S, and G2/M cells and revealed that G0/G1 cells in LSCs, which was its major subpopulation, were the top ouabain responders, indicating that the difference in ouabain sensitivity between LSCs and LPCs involved both distinct cell cycle distribution and intrinsic apoptosis regulatory mechanisms. Further, Mcl-1 and c-Myc, which were differentially expressed in LSCs and LPCs, were found to be the key apoptosis mediators that determined ouabain sensitivity in AML cells. Ouabain induces a more rapid loss of Mcl-1 and c-Myc in LSCs than in LPCs via the mechanisms that in part involve an inhibition of Mcl-1 protein synthesis and an induction of c-Myc degradation. CONCLUSIONS Our data provide new insight for repurposing cardiac glycosides for the treatment of relapsed/refractory AML through targeting LSCs via distinct cell cycle and apoptosis machinery. Video Abstract.
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Affiliation(s)
- Jirarat Poohadsuan
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Siriraj Hospital, Bangkoknoi, Bangkok, 10700, Thailand
| | - George A O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Weerapat Owattanapanich
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Excellence of Siriraj Adult Acute Myeloid/Lymphoblastic Leukemia, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Smith Kungwankiattichai
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Excellence of Siriraj Adult Acute Myeloid/Lymphoblastic Leukemia, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, West Virginia University, Morgantown, WV, USA
- WVU Cancer Institute, West Virginia University, Morgantown, WV, USA
| | - Surapol Issaragrisil
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Siriraj Hospital, Bangkoknoi, Bangkok, 10700, Thailand
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sudjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Siriraj Hospital, Bangkoknoi, Bangkok, 10700, Thailand.
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Traverso AN, Fragale DJ, Viale DL, Garate O, Torres P, Valverde G, Berra A, Torbidoni AV, Yakisich JS, Grasselli M, Radrizzani M. Two-Step Preparation of Protein-Decorated Biohybrid Quantum Dot Nanoparticles for Cellular Uptake. Pharmaceutics 2023; 15:1651. [PMID: 37376099 DOI: 10.3390/pharmaceutics15061651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Decoration of nanoparticles with specific molecules such as antibodies, peptides, and proteins that preserve their biological properties is essential for the recognition and internalization of their specific target cells. Inefficient preparation of such decorated nanoparticles leads to nonspecific interactions diverting them from their desired target. We report a simple two-step procedure for the preparation of biohybrid nanoparticles containing a core of hydrophobic quantum dots coated with a multilayer of human serum albumin. These nanoparticles were prepared by ultra-sonication, crosslinked using glutaraldehyde, and decorated with proteins such as human serum albumin or human transferrin in their native conformations. These nanoparticles were homogeneous in size (20-30 nm), retained the fluorescent properties of quantum dots, and did not show a "corona effect" in the presence of serum. The uptake of transferrin-decorated quantum dot nanoparticles was observed in A549 lung cancer and SH-SY5Y neuroblastoma cells but not in non-cancerous 16HB14o- or retinoic acid dopaminergic neurons differentiated SH-SY5Y cells. Furthermore, digitoxin-loaded transferrin-decorated nanoparticles decreased the number of A549 cells without effect on 16HB14o-. Finally, we analyzed the in vivo uptake of these biohybrids by murine retinal cells, demonstrating their capacity to selectively target and deliver into specific cell types with excellent traceability.
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Affiliation(s)
- Agata Noelia Traverso
- Neuro and Molecular Cytogenetics Laboratory, Institute of Emerging Technologies and Applied Sciences (ITECA), National Council for Scientific and Technical Research (CONICET), School of Science and Technology, National University of San Martín, Av. Gral. Paz 5445, San Martín B1650, Argentina
| | - David José Fragale
- Neuro and Molecular Cytogenetics Laboratory, Institute of Emerging Technologies and Applied Sciences (ITECA), National Council for Scientific and Technical Research (CONICET), School of Science and Technology, National University of San Martín, Av. Gral. Paz 5445, San Martín B1650, Argentina
| | - Diego Luis Viale
- Neuro and Molecular Cytogenetics Laboratory, Institute of Emerging Technologies and Applied Sciences (ITECA), National Council for Scientific and Technical Research (CONICET), School of Science and Technology, National University of San Martín, Av. Gral. Paz 5445, San Martín B1650, Argentina
| | - Octavio Garate
- Nanomateriales Funcionales, INTI-Micro y Nanotecnología, Instituto Nacional de Tecnología Industrial, San Martín B1650, Argentina
| | - Pablo Torres
- Science and Technology Institute Cesar Milstein, Fundación Pablo Cassará-National Council for Scientific and Technical Research (CONICET) Saladillo 2452, Ciudad Autónoma de Buenos Aires C1440, Argentina
| | - Gastón Valverde
- Translational Laboratory of Immunopathology and Ophthalmology, Department of Pathology, Faculty of Medicine, Universidad de Buenos Aires, Paraguay 2155, Ciudad Autónoma de Buenos Aires C1121, Argentina
| | - Alejandro Berra
- Translational Laboratory of Immunopathology and Ophthalmology, Department of Pathology, Faculty of Medicine, Universidad de Buenos Aires, Paraguay 2155, Ciudad Autónoma de Buenos Aires C1121, Argentina
| | - Ana Vanesa Torbidoni
- Laboratorio de Biología Celular y Molecular, Instituto Argentino de Veterinaria, Ambiente y Salud (IAVAS) Universidad Juan Agustín Maza (UMaza), Mendoza M5519, Argentina
| | - Juan Sebastián Yakisich
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, VA 23693, USA
| | - Mariano Grasselli
- Biotechnological Materials Laboratory (LaMaBio), Department of Science and Technology, National University of Quilmes, GBEyB, Grupo Vinculado IMBICE-CONICET, Roque Sáenz Peña 352, Buenos Aires B1876, Argentina
| | - Martín Radrizzani
- Neuro and Molecular Cytogenetics Laboratory, Institute of Emerging Technologies and Applied Sciences (ITECA), National Council for Scientific and Technical Research (CONICET), School of Science and Technology, National University of San Martín, Av. Gral. Paz 5445, San Martín B1650, Argentina
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Kim S, Oiler J, Xing Y, O'Doherty GA. De novo asymmetric Achmatowicz approach to oligosaccharide natural products. Chem Commun (Camb) 2022; 58:12913-12926. [PMID: 36321854 PMCID: PMC9710213 DOI: 10.1039/d2cc05280f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
The development and application of the asymmetric synthesis of oligosaccharides from achiral starting materials is reviewed. This de novo asymmetric approach centers around the use of asymmetric catalysis for the synthesis of optically pure furan alcohols in conjunction with Achmatowicz oxidative rearrangement for the synthesis of various pyranones. In addition, the use of a diastereoselective palladium-catalyzed glycosylation and subsequent diastereoselective post-glycosylation transformation was used for the synthesis of oligosaccharides. The application of this approach to oligosaccharide synthesis is discussed.
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Affiliation(s)
- Sugyeom Kim
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA.
| | - Jeremy Oiler
- Department of Chemistry, William Paterson University, Wayne, NJ, 07470, USA
| | - Yalan Xing
- Department of Chemistry, Hofstra University, Hempstead, NY, 11549, USA.
| | - George A O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA.
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Investigation of the Mechanism of Periploca forrestii against Rheumatoid Arthritis with Network Pharmacology-Based Analysis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2993374. [PMID: 35836835 PMCID: PMC9276489 DOI: 10.1155/2022/2993374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/16/2022] [Accepted: 05/24/2022] [Indexed: 11/17/2022]
Abstract
Periploca forrestii Schltr (P. forrestii) is an edible medicinal herb with various health benefits such as treating antirheumatoid arthritis (RA), reducing inflammation, and preventing tumor growth. The active ingredients in P. forrestii responsible for its protective effect against RA, however, remain unknown. In this study, the active ingredient of P. forrestii and its potential mechanism of action against RA were investigated by network pharmacology and enrichment analysis. The methods included predicting target genes of P. forrestii, constructing a protein interaction network, and performing gene-ontology (GO) and Kyoto-encyclopedia of genes and genomes (KEGG) enrichment analysis. We discovered targets of RA through retrieval of OMIM and GeneCards public databases. Cardiac glycosides (CGs) are considered the primarily active ingredients of P. forrestii, and the target genes of GCs were discovered to be overlapped with relevant targets of RA using the Venn diagram. After that, prediction of relevant targets of P. forrestii was accomplished with a network pharmacology-based approach. Through the Venn diagram, we discovered 99 genes shared in the target genes of P. forrestii and RA. Gene enrichment analysis showed that the mechanisms of CGs against RA are associated with 55 signaling pathways, including endocrine resistance, Epstein-Barr virus infection, bladder cancer, prostate cancer, and coronavirus disease (COVID-19) signaling pathways. Coexpression analysis indicated ADSL, ATIC, AR, CCND1, MDM2, and HSP90AA1 as the hub genes between putative targets of P. forrestii-derived CGs and known therapeutic targets of RA. In conclusion, we clarified the mechanism of action of P. forrestii against RA, which would provide a basis for further understanding the clinical application of P. forrestii.
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Kumbhar P, Kole K, Yadav T, Bhavar A, Waghmare P, Bhokare R, Manjappa A, Jha NK, Chellappan DK, Shinde S, Singh SK, Dua K, Salawi A, Disouza J, Patravale V. Drug repurposing: An emerging strategy in alleviating skin cancer. Eur J Pharmacol 2022; 926:175031. [PMID: 35580707 DOI: 10.1016/j.ejphar.2022.175031] [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: 03/07/2022] [Revised: 04/22/2022] [Accepted: 05/11/2022] [Indexed: 12/24/2022]
Abstract
Skin cancer is one of the most common forms of cancer. Several million people are estimated to have affected with this condition worldwide. Skin cancer generally includes melanoma and non-melanoma with the former being the most dangerous. Chemotherapy has been one of the key therapeutic strategies employed in the treatment of skin cancer, especially in advanced stages of the disease. It could be also used as an adjuvant with other treatment modalities depending on the type of skin cancer. However, there are several shortfalls associated with the use of chemotherapy such as non-selectivity, tumour resistance, life-threatening toxicities, and the exorbitant cost of medicines. Furthermore, new drug discovery is a lengthy and costly process with minimal likelihood of success. Thus, drug repurposing (DR) has emerged as a new avenue where the drug approved formerly for the treatment of one disease can be used for the treatment of another disease like cancer. This approach is greatly beneficial over the de novo approach in terms of time and cost. Moreover, there is minimal risk of failure of repurposed therapeutics in clinical trials. There are a considerable number of studies that have reported on drugs repurposed for the treatment of skin cancer. Thus, the present manuscript offers a comprehensive overview of drugs that have been investigated as repurposing candidates for the efficient treatment of skin cancers mainly melanoma and its oncogenic subtypes, and non-melanoma. The prospects of repurposing phytochemicals against skin cancer are also discussed. Furthermore, repurposed drug delivery via topical route and repurposed drugs in clinical trials are briefed. Based on the findings from the reported studies discussed in this manuscript, drug repurposing emerges to be a promising approach and thus is expected to offer efficient treatment at a reasonable cost in devitalizing skin cancer.
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Affiliation(s)
- Popat Kumbhar
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Kapil Kole
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Tejashree Yadav
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Ashwini Bhavar
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Pramod Waghmare
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Rajdeep Bhokare
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Arehalli Manjappa
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, 201310, Uttar Pradesh, India; Department of Biotechnology, School of Applied and Life Sciences (SALS), Uttaranchal University, Dehradun 248007, India
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, 57000, Kuala Lumpur, Malaysia
| | - Sunita Shinde
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, 2007, Australia; Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, 248007, India
| | - Ahmad Salawi
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
| | - John Disouza
- Tatyasaheb Kore College of Pharmacy, Warananagar, Tal: Panhala, Dist: Kolhapur Maharashtra, 416113, India.
| | - Vandana Patravale
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga, Mumbai, Maharashtra, 400019, India.
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Meneses-Sagrero SE, Rascón-Valenzuela LA, García-Ramos JC, Vilegas W, Arvizu-Flores AA, Sotelo-Mundo RR, Robles-Zepeda RE. Calotropin and corotoxigenin 3-O-glucopyranoside from the desert milkweed Asclepias subulata inhibit the Na +/K +-ATPase activity. PeerJ 2022; 10:e13524. [PMID: 35673388 PMCID: PMC9167584 DOI: 10.7717/peerj.13524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 05/10/2022] [Indexed: 01/17/2023] Open
Abstract
Na+/K+-ATPase is an essential transmembrane enzyme found in all mammalian cells with critical functions for cell ion homeostasis. The inhibition of this enzyme by several cardiotonic steroids (CTS) has been associated with the cytotoxic effect on cancer cell lines of phytochemicals such as ouabain and digitoxin. This study evaluated the inhibitory capacity of cardenolides calotropin and corotoxigenin 3-O-glucopyranoside (C3OG) from Asclepias subulata over the Na+/K+-ATPase activity in vitro and silico. The inhibitory assays showed that calotropin and C3OG decreased the Na+/K+-ATPase activity with IC50 values of 0.27 and 0.87 μM, respectively. Furthermore, the molecules presented an uncompetitive inhibition on Na+/K+-ATPase activity, with Ki values of 0.2 μM to calotropin and 0.5 μM to C3OG. Furthermore, the molecular modeling indicated that calotropin and C3OG might interact with the Thr797 and Gln111 residues, considered essential to the interaction with the Na+/K+-ATPase. Besides, these cardenolides can interact with amino acid residues such as Phe783, Leu125, and Ala323, to establish hydrophobic interactions on the binding site. Considering the results, these provide novel evidence about the mechanism of action of cardenolides from A. subulata, proposing that C3OG is a novel cardenolide that deserves further consideration for in vitro cellular antiproliferative assays and in vivo studies as an anticancer molecule.
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Affiliation(s)
| | | | - Juan C. García-Ramos
- Escuela de Ciencias de la Salud, Universidad Autónoma de Baja California, Ensenada, Baja California, México
| | - Wagner Vilegas
- Instituto de Biociências, São Paulo State University, Sao Paulo, Brasil
| | | | - Rogerio R. Sotelo-Mundo
- Laboratorio de Estructura Molecular, Centro de Investigación en Alimentación y Desarrollo AC, Hermosillo, Sonora, México
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Seeneevassen L, Dubus P, Gronnier C, Varon C. Hippo in Gastric Cancer: From Signalling to Therapy. Cancers (Basel) 2022; 14:cancers14092282. [PMID: 35565411 PMCID: PMC9105983 DOI: 10.3390/cancers14092282] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 12/12/2022] Open
Abstract
The Hippo pathway is one of the most important ones in mammals. Its key functions in cell proliferation, tissue growth, repair, and homeostasis make it the most crucial one to be controlled. Many means have been deployed for its regulation, since this pathway is not only composed of core regulatory components, but it also communicates with and regulates various other pathways, making this signalisation even more complex. Its role in cancer has been studied more and more over the past few years, and it presents YAP/TAZ as the major oncogenic actors. In this review, we relate how vital this pathway is for different organs, and how regulatory mechanisms have been bypassed to lead to cancerous states. Most studies present an upregulation status of YAP/TAZ, and urge the need to target them. A focus is made here on gastric carcinogenesis, its main dysregulations, and the major strategies adopted and tested to counteract Hippo pathway disbalance in this disease. Hippo pathway targeting can be achieved by various means, which are described in this review. Many studies have tested different potential molecules, which are detailed hereby. Though not all tested in gastric cancer, they could represent a real interest.
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Affiliation(s)
- Lornella Seeneevassen
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, F-33000 Bordeaux, France; (L.S.); (P.D.); (C.G.)
| | - Pierre Dubus
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, F-33000 Bordeaux, France; (L.S.); (P.D.); (C.G.)
- Department of Histology and Pathology, CHU Bordeaux, F-33000 Bordeaux, France
| | - Caroline Gronnier
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, F-33000 Bordeaux, France; (L.S.); (P.D.); (C.G.)
- Department of Digestive Surgery, Haut-Lévêque Hospital, CHU Bordeaux, F-33000 Bordeaux, France
| | - Christine Varon
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, F-33000 Bordeaux, France; (L.S.); (P.D.); (C.G.)
- Correspondence:
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Valadares JMDM, Bajaj SO, Li H, Wang HYL, Silva SC, Garcia IJP, Pereira DG, Azalim P, Quintas LEM, Noël F, Cortes VF, O'Doherty GA, Barbosa LA. Cytotoxic effect of carbohydrate derivatives of digitoxigenin involves modulation of plasma membrane Ca 2+ -ATPase. J Cell Biochem 2021; 122:1903-1914. [PMID: 34553411 PMCID: PMC8671332 DOI: 10.1002/jcb.30150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/12/2021] [Indexed: 12/26/2022]
Abstract
Cardiac glycosides, such as digoxin and digitoxin, are compounds that interact with Na+ /K+ -ATPase to induce anti-neoplastic effects; however, these cardiac glycosides have narrow therapeutic index. Thus, semi-synthetic analogs of digitoxin with modifications in the sugar moiety has been shown to be an interesting approach to obtain more selective and more effective analogs than the parent natural product. Therefore, the aim of this study was to assess the cytotoxic potential of novel digitoxigenin derivatives, digitoxigenin-α-L-rhamno-pyranoside (1) and digitoxigenin-α-L-amiceto-pyranoside (2), in cervical carcinoma cells (HeLa) and human diploid lung fibroblasts (Wi-26-VA4). In addition, we studied the anticancer mechanisms of action of these compounds by comparing its cytotoxic effects with the potential to modulate the activity of three P-type ATPases; Na+ /K+ -ATPase, sarco/endoplasmic reticulum Ca2+ -ATPase (SERCA), and plasma membrane Ca2+ -ATPase (PMCA). Briefly, the results showed that compounds 1 and 2 were more cytotoxic and selectivity for HeLa tumor cells than the nontumor cells Wi-26-VA4. While the anticancer cytotoxicity in HeLa cells involves the modulation of Na+ /K+ -ATPase, PMCA and SERCA, the modulation of these P-type ATPases was completely absent in Wi-26-VA4 cells, which suggest the importance of their role in the cytotoxic effect of compounds 1 and 2 in HeLa cells. Furthermore, the compound 2 inhibited directly erythrocyte ghosts PMCA and both compounds were more cytotoxic than digitoxin in HeLa cells. These results provide a better understanding of the mode of action of the synthetic cardiac glycosides and highlights 1 and 2 as potential anticancer agents.
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Affiliation(s)
- Jéssica Martins de Moura Valadares
- Campus Centro-Oeste Dona Lindú, Laboratório de Bioquímica Celular, Universidade Federal de São João Del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Sumit O Bajaj
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, USA
| | - Hongyan Li
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, USA
| | - Hua-Yu L Wang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, USA
| | - Simone Cavalcante Silva
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, USA
| | - Israel José Pereira Garcia
- Campus Centro-Oeste Dona Lindú, Laboratório de Bioquímica Celular, Universidade Federal de São João Del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Duane Gischewiski Pereira
- Campus Centro-Oeste Dona Lindú, Laboratório de Bioquímica Celular, Universidade Federal de São João Del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Pedro Azalim
- Instituto de Ciências Biomédicas, Laboratório de Farmacologia Bioquímica e Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, State of Rio de Janeiro, Brazil
| | - Luis Eduardo Menezes Quintas
- Instituto de Ciências Biomédicas, Laboratório de Farmacologia Bioquímica e Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, State of Rio de Janeiro, Brazil
| | - François Noël
- Instituto de Ciências Biomédicas, Laboratório de Farmacologia Bioquímica e Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, State of Rio de Janeiro, Brazil
| | - Vanessa Faria Cortes
- Campus Centro-Oeste Dona Lindú, Laboratório de Bioquímica Celular, Universidade Federal de São João Del-Rei, Divinópolis, Minas Gerais, Brazil
| | | | - Leandro Augusto Barbosa
- Campus Centro-Oeste Dona Lindú, Laboratório de Bioquímica Celular, Universidade Federal de São João Del-Rei, Divinópolis, Minas Gerais, Brazil
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10
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Liu C, Wang L, Pan L, Hou W, Hao Z, Qu L. An automated streamlined method for the therapeutic drug monitoring of digoxin based on the online-solid-phase extraction liquid chromatography tandem high-resolution mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9191. [PMID: 34490670 DOI: 10.1002/rcm.9191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
RATIONALE Digoxin is widely used in the clinical treatment of cardiovascular diseases. However, due to its extremely narrow therapeutic window, therapeutic drug monitoring (TDM) is vitally important. In consideration of the time-consuming and labor-intensive nature of the traditional techniques, an automated and efficient method was required for the clinical individualized TDM of digoxin. METHODS An online solid-phase extraction liquid chromatography tandem high-resolution mass spectrometry (online-SPE-LC-HRMS) method was developed and applied for the determination of digoxin in plasma. The online SPE-LC steps included pretreatment and separation of plasma samples that were carried out using a Waters Oasis HLB cartridge and XBridge Shield RP18 column, respectively. A high-resolution Q Orbitrap mass spectrometer with targeted-selected ion monitoring in negative scan mode was applied to monitor formate-adduct ions [M + HCOO]- m/z 825.42781 for digoxin. RESULTS Linearity was shown over the range 0.1-10 ng mL-1 for digoxin with correlation coefficients of R2 > 0.999. The lower limit of quantitation (LLOQ) for digoxin was 0.1 ng mL-1 . Extraction recoveries ranged from 82.61% to 94.28% for digoxin. The intra- and inter-day precision values were < 5.53% with accuracy ranging from 84.97% to 96.75%. The total running time was 10 min for each sample. CONCLUSION The established method displayed satisfactory recoveries, accuracy, precision, and stability, and successfully applied on the TDM of digoxin. This automated streamlined method provides a powerful tool to guide the individualized administration of digoxin, which is significant for the practice of precision medicine.
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Affiliation(s)
- Congmin Liu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Li Wang
- Department of Integrated of Chinese and Western Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, China
| | - Lixuan Pan
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Wenqing Hou
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Zhihui Hao
- Chinese Veterinary Medicine Innovation Center, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Lihua Qu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
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11
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Kumavath R, Paul S, Pavithran H, Paul MK, Ghosh P, Barh D, Azevedo V. Emergence of Cardiac Glycosides as Potential Drugs: Current and Future Scope for Cancer Therapeutics. Biomolecules 2021; 11:1275. [PMID: 34572488 PMCID: PMC8465509 DOI: 10.3390/biom11091275] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 12/24/2022] Open
Abstract
Cardiac glycosides are natural sterols and constitute a group of secondary metabolites isolated from plants and animals. These cardiotonic agents are well recognized and accepted in the treatment of various cardiac diseases as they can increase the rate of cardiac contractions by acting on the cellular sodium potassium ATPase pump. However, a growing number of recent efforts were focused on exploring the antitumor and antiviral potential of these compounds. Several reports suggest their antitumor properties and hence, today cardiac glycosides (CG) represent the most diversified naturally derived compounds strongly recommended for the treatment of various cancers. Mutated or dysregulated transcription factors have also gained prominence as potential therapeutic targets that can be selectively targeted. Thus, we have explored the recent advances in CGs mediated cancer scope and have considered various signaling pathways, molecular aberration, transcription factors (TFs), and oncogenic genes to highlight potential therapeutic targets in cancer management.
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Affiliation(s)
- Ranjith Kumavath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (P.O) Kasaragod, Kerala 671320, India;
| | - Sayan Paul
- Department of Biotechnology, Manonmaniam Sundaranar University, Tirunelveli, Tamilnadu 627012, India;
- Centre for Cardiovascular Biology and Disease, Institute for Stem Cell Science and Regenerative Medicine, Bangalore 560065, India
| | - Honey Pavithran
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (P.O) Kasaragod, Kerala 671320, India;
| | - Manash K. Paul
- Department of Pulmonary and Critical Care Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA;
| | - Preetam Ghosh
- Department of Computer Science, Virginia Commonwealth University, Richmond, VA 23284, USA;
| | - Debmalya Barh
- Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur 721172, India;
- Laboratório de Genética Celular e Molecular, Departamento de Genetica, Ecologia e Evolucao, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-001, Brazil;
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular, Departamento de Genetica, Ecologia e Evolucao, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-001, Brazil;
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12
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Sharif EU, Shi P, O'Doherty GA. Synthesis of
O
‐linked Cyclitol Analogues of Gilvocarcin M and Antibacterial Activity. Isr J Chem 2021. [DOI: 10.1002/ijch.202100015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ehesan U. Sharif
- Department of Chemistry and Chemical Biology Northeastern University Boston MA 02115 US
| | - Pei Shi
- Department of Chemistry and Chemical Biology Northeastern University Boston MA 02115 US
| | - George A. O'Doherty
- Department of Chemistry and Chemical Biology Northeastern University Boston MA 02115 US
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13
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Bejček J, Spiwok V, Kmoníčková E, Rimpelová S. Na +/K +-ATPase Revisited: On Its Mechanism of Action, Role in Cancer, and Activity Modulation. Molecules 2021; 26:molecules26071905. [PMID: 33800655 PMCID: PMC8061769 DOI: 10.3390/molecules26071905] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/08/2023] Open
Abstract
Maintenance of Na+ and K+ gradients across the cell plasma membrane is an essential process for mammalian cell survival. An enzyme responsible for this process, sodium-potassium ATPase (NKA), has been currently extensively studied as a potential anticancer target, especially in lung cancer and glioblastoma. To date, many NKA inhibitors, mainly of natural origin from the family of cardiac steroids (CSs), have been reported and extensively studied. Interestingly, upon CS binding to NKA at nontoxic doses, the role of NKA as a receptor is activated and intracellular signaling is triggered, upon which cancer cell death occurs, which lies in the expression of different NKA isoforms than in healthy cells. Two major CSs, digoxin and digitoxin, originally used for the treatment of cardiac arrhythmias, are also being tested for another indication—cancer. Such drug repositioning has a big advantage in smoother approval processes. Besides this, novel CS derivatives with improved performance are being developed and evaluated in combination therapy. This article deals with the NKA structure, mechanism of action, activity modulation, and its most important inhibitors, some of which could serve not only as a powerful tool to combat cancer, but also help to decipher the so-far poorly understood NKA regulation.
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Affiliation(s)
- Jiří Bejček
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic; (J.B.); (V.S.)
| | - Vojtěch Spiwok
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic; (J.B.); (V.S.)
| | - Eva Kmoníčková
- Department of Pharmacology, Second Faculty of Medicine, Charles University, Plzeňská 311, 150 00 Prague, Czech Republic;
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic; (J.B.); (V.S.)
- Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00 Pilsen, Czech Republic
- Correspondence: ; Tel.: +420-220-444-360
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14
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Investigation of the cytotoxic activity of two novel digitoxigenin analogues on H460 lung cancer cells. Anticancer Drugs 2021; 31:452-462. [PMID: 32079825 DOI: 10.1097/cad.0000000000000872] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cardiac glycosides (CGs) are natural compounds traditionally used for the treatment of heart disorders, and recently new therapeutic possibilities were proposed. Their antitumor reports and clinical trials have notably enhanced, including those targeted for lung cancer, the most lethal type that lacks of new treatment agents, instigating the research of these molecules. The CGs studied here, named C10 {3β-[(N-(2-hydroxyethyl)aminoacetyl]amino-3-deoxydigitoxigenin} and C18 (3β-(aminoacetyl)amino-3-deoxydigitoxigenin), are semisynthetic derivatives prepared from digitoxigenin scaffold. Both compounds demonstrated high cytotoxicity for different cancer cell lines, especially H460 lung cancer cells, and their cytotoxic effects were deeply investigated using different methodological approaches. C10 induced cell death at lower concentrations and during shorter periods of treatment than C18, and increased the number of small and irregular nuclei, which are characteristics of apoptosis. This type of cell death was confirmed by caspase-3/7 assay. Both compounds reduced H460 cells proliferative potential by long-term action, and C10 showed the strongest potential. Moreover, these compounds induced a significant decrease of the area and viability of H460 spheroids providing preclinical favorable profiles to develop new chemotherapeutic agents.
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15
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Cytotoxicity of glucoevatromonoside alone and in combination with chemotherapy drugs and their effects on Na +,K +-ATPase and ion channels on lung cancer cells. Mol Cell Biochem 2021; 476:1825-1848. [PMID: 33459980 DOI: 10.1007/s11010-020-04040-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022]
Abstract
Cardiac glycosides (CGs) are useful drugs to treat cardiac illnesses and have potent cytotoxic and anticancer effects in cultured cells and animal models. Their receptor is the Na+,K+ ATPase, but other plasma membrane proteins might bind CGs as well. Herein, we evaluated the short- and long-lasting cytotoxic effects of the natural cardenolide glucoevatromonoside (GEV) on non-small-cell lung cancer H460 cells. We also tested GEV effects on Na+,K+ -ATPase activity and membrane currents, alone or in combination with selected chemotherapy drugs. GEV reduced viability, migration, and invasion of H460 cells spheroids. It also induced cell cycle arrest and death and reduced the clonogenic survival and cumulative population doubling. GEV inhibited Na+,K+-ATPase activity on A549 and H460 cells and purified pig kidney cells membrane. However, it showed no activity on the human red blood cell plasma membrane. Additionally, GEV triggered a Cl-mediated conductance on H460 cells without affecting the transient voltage-gated sodium current. The administration of GEV in combination with the chemotherapeutic drugs paclitaxel (PAC), cisplatin (CIS), irinotecan (IRI), and etoposide (ETO) showed synergistic antiproliferative effects, especially when combined with GEV + CIS and GEV + PAC. Taken together, our results demonstrate that GEV is a potential drug for cancer therapy because it reduces lung cancer H460 cell viability, migration, and invasion. Our results also reveal a link between the Na+,K+-ATPase and Cl- ion channels.
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16
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Steroid Glycosides Hyrcanoside and Deglucohyrcanoside: On Isolation, Structural Identification, and Anticancer Activity. Foods 2021; 10:foods10010136. [PMID: 33440629 PMCID: PMC7827417 DOI: 10.3390/foods10010136] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 12/20/2022] Open
Abstract
Cardiac glycosides (CGs) represent a group of sundry compounds of natural origin. Most CGs are potent inhibitors of Na+/K+-ATPase, and some are routinely utilized in the treatment of various cardiac conditions. Biological activities of other lesser known CGs have not been fully explored yet. Interestingly, the anticancer potential of some CGs was revealed and thereby, some of these compounds are now being evaluated for drug repositioning. However, high systemic toxicity and low cancer cell selectivity of the clinically used CGs have severely limited their utilization in cancer treatment so far. Therefore, in this study, we have focused on two poorly described CGs: hyrcanoside and deglucohyrcanoside. We elaborated on their isolation, structural identification, and cytotoxicity evaluation in a panel of cancerous and noncancerous cell lines, and on their potential to induce cell cycle arrest in the G2/M phase. The activity of hyrcanoside and deglucohyrcanoside was compared to three other CGs: ouabain, digitoxin, and cymarin. Furthermore, by in silico modeling, interaction of these CGs with Na+/K+-ATPase was also studied. Hopefully, these compounds could serve not only as a research tool for Na+/K+-ATPase inhibition, but also as novel cancer therapeutics.
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17
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Ayogu JI, Odoh AS. Prospects and Therapeutic Applications of Cardiac Glycosides in Cancer Remediation. ACS COMBINATORIAL SCIENCE 2020; 22:543-553. [PMID: 32786321 DOI: 10.1021/acscombsci.0c00082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Active metabolites from natural sources are the predominant molecular targets in numerous biological studies owing to their appropriate compatibility with biological systems and desirable selective toxicities. Thus, their potential for therapeutic development could span a broad scope of disease areas, including pathological and neurological dysfunctions. Cardiac glycosides are a unique class of specialized metabolites that have been extensively applied as therapeutic agents for the treatment of numerous heart conditions, and more recently, they have also been explored as probable antitumor agents. They are a class of naturally derived compounds that bind to and inhibit Na+/K+-ATPase. This study presents cardiac glycosides and their analogues with highlights on their applications, challenges, and prospects as lead compounds for cancer treatment.
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Affiliation(s)
- Jude I. Ayogu
- Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka 410001, Nigeria
- Department of Chemistry, School of Physical and Chemical Science, University of Canterbury, Christchurch 8041, New Zealand
| | - Amaechi S. Odoh
- Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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18
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Wang Y, Zhou Z, Chen L, Li Y, Zhou Z, Chu X. Identification of key genes and biological pathways in lung adenocarcinoma via bioinformatics analysis. Mol Cell Biochem 2020; 476:931-939. [PMID: 33130972 DOI: 10.1007/s11010-020-03959-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/23/2020] [Indexed: 02/06/2023]
Abstract
Lung adenocarcinoma (LUAD) accounts for the majority of cancer-related deaths worldwide. Our study identified key LUAD genes and their potential mechanism via bioinformatics analysis of public datasets. GSE10799, GSE40791, and GSE27262 microarray datasets were retrieved from the Gene Expression Omnibus (GEO) database. The RobustRankAggreg package was used to perform a meta-analysis, and 50 upregulated genes and 87 downregulated genes overlapped in three datasets. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were performed using the Database for Annotation, Visualization, and Integrated Discovery (DAVID). Furthermore, protein-protein interaction (PPI) networks of the differentially expressed genes (DEGs) were built by the Search Tool for the Retrieval of Interacting Genes (STRING) and 22 core genes were identified by Molecular Complex Detection (MCODE) and visualized with Cytoscape. Subsequently, these core genes were analyzed by the Kaplan-Meier Plotter and Gene Expression Profiling Interactive Analysis (GEPIA). The results showed that all 22 genes were significantly associated with reduced survival rates. For GEPIA, the expression of only one gene was not significantly different between LUAD tissues and normal tissues. A KEGG pathway enrichment reanalysis of the 21 genes identified five key genes (CCNB1, BUB1B, CDC20, TTK, and MAD2L1) in the cell cycle pathway. Finally, the Comparative Toxicogenomics Database (CTD) website was used to explore the relationship between these key genes and certain drugs. Based on the bioinformatics analysis, five key genes were identified in LUAD, and drugs closely associated these genes can provide clues for the treatment and prognosis of LUAD.
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Affiliation(s)
- Yuanyuan Wang
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China
| | - Zihao Zhou
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China
| | - Liang Chen
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China
| | - Yuzheng Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China
| | - Zengyuan Zhou
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China
| | - Xia Chu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, Hei Longjiang Province, 150081, P. R. China.
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19
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Geng X, Wang F, Tian D, Huang L, Streator E, Zhu J, Kurihara H, He R, Yao X, Zhang Y, Tang J. Cardiac glycosides inhibit cancer through Na/K-ATPase-dependent cell death induction. Biochem Pharmacol 2020; 182:114226. [PMID: 32976831 DOI: 10.1016/j.bcp.2020.114226] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 02/06/2023]
Abstract
Successful drug repurposing relies on the understanding of molecular mechanisms of the target compound. Cardiac glycosides have demonstrated potent anticancer activities; however, the pharmacological mechanisms underlying their anticancer effects remained elusive, which has restricted their further development in cancer treatment. A bottleneck is the lack of comprehensive understanding about genes and signaling pathways that are altered at the early stage of drug treatment, which is key to understand how they inhibit cancer. To address this issue, we first investigated the anticancer effects of a panel of 68 naturally isolated cardiac glycosides. Our results illustrate critical structure activity relationship of these compounds on cancer cell survival. We confirmed the anticancer effect of cardiac glycoside in mouse tumor xenografts. Through RNA sequencing, quantitative PCR and immunoblotting, we show that cardiac glycoside first activated autophagy and then induced apoptosis. Further activating autophagy by rapamycin or inhibiting apoptosis by caspase inhibitor mitigated cardiac glycoside-induced cell death, whereas inhibiting autophagy by RNA interference-mediated depletion of critical autophagy genes enhanced cell death. While depletion of Na/K-ATPase, the protein target of cardiac glycosides, by RNA interference inhibited both autophagy activation and apoptosis induction by cardiac glycoside, expression of human, but not rodent Na/K-ATPase, increased cell sensitivity to cardiac glycoside. In conclusion, our analyses reveal sequential activation of autophagy and apoptosis during early stages of cardiac glycoside treatment and indicate the importance of Na/K-ATPase in their anticancer effects.
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Affiliation(s)
- Xinran Geng
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China
| | - Fangfang Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Danmei Tian
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Lihua Huang
- International Academic Support & Delivery Unit, BGI Genomics, Co., Ltd., Shenzhen 518083, People's Republic of China
| | - Evan Streator
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Jingjing Zhu
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Hiroshi Kurihara
- Anti-Stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, People's Republic of China
| | - Rongrong He
- Anti-Stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, People's Republic of China
| | - Xinsheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Youwei Zhang
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
| | - Jinshan Tang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou 510632, People's Republic of China.
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20
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Tian D, Tang J, Geng X, Li Q, Wang F, Zhao H, Narla G, Yao X, Zhang Y. Targeting UHRF1-dependent DNA repair selectively sensitizes KRAS mutant lung cancer to chemotherapy. Cancer Lett 2020; 493:80-90. [PMID: 32814087 DOI: 10.1016/j.canlet.2020.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/16/2020] [Accepted: 08/01/2020] [Indexed: 12/18/2022]
Abstract
Kirsten rat sarcoma virus oncogene homolog (KRAS) mutant lung cancer remains a challenge to cure and chemotherapy is the current standard treatment in the clinic. Hence, understanding molecular mechanisms underlying the sensitivity of KRAS mutant lung cancer to chemotherapy could help uncover unique strategies to treat this disease. Here we report a compound library screen and identification of cardiac glycosides as agents that selectively enhance the in vitro and in vivo effects of chemotherapy on KRAS mutant lung cancer. Quantitative mass spectrometry reveals that cardiac glycosides inhibit DNA double strand break (DSB) repair through suppressing the expression of UHRF1, an important DSB repair factor. Inhibition of UHRF1 by cardiac glycosides was mediated by specific suppression of the oncogenic KRAS pathway. Overexpression of UHRF1 rescued DSB repair inhibited by cardiac glycosides and depletion of UHRF1 mitigated cardiac glycoside-enhanced chemotherapeutic drug sensitivity in KRAS mutant lung cancer cells. Our study reveals a targetable dependency on UHRF1-stimulated DSB repair in KRAS mutant lung cancer in response to chemotherapy.
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Affiliation(s)
- Danmei Tian
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Jinshan Tang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Xinran Geng
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Qingwen Li
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Fangfang Wang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Huadong Zhao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Goutham Narla
- Division of Genetic Medicine, Department of Internal Medicine, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xinsheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Youwei Zhang
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA.
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21
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Lei Y, Gan H, Huang Y, Chen Y, Chen L, Shan A, Zhao H, Wu M, Li X, Ma Q, Wang J, Zhang E, Zhang J, Li Y, Xue F, Deng L. Digitoxin inhibits proliferation of multidrug-resistant HepG2 cells through G 2/M cell cycle arrest and apoptosis. Oncol Lett 2020; 20:71. [PMID: 32863904 PMCID: PMC7436926 DOI: 10.3892/ol.2020.11932] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/30/2020] [Indexed: 12/20/2022] Open
Abstract
Hepatocellular carcinoma (HCC) remains a challenge in the medical field due to its high malignancy and mortality rates particularly for HCC, which has developed multidrug resistance. Therefore, the identification of efficient chemotherapeutic drugs for multidrug resistant HCC has become an urgent issue. Natural products have always been of significance in drug discovery. In the present study, a cell-based method was used to screen a natural compound library, which consisted of 78 compounds, and the doxorubicin-resistant cancer cell line, HepG2/ADM, as screening tools. The findings of the present study led to the shortlisting of one of the compounds, digitoxin, which displayed an inhibitory effect on HepG2/ADM cells, with 50% inhibitory concentration values of 132.65±3.83, 52.29±6.26, and 9.13±3.67 nM for 24, 48, and 72 h, respectively. Immunofluorescence, western blotting and cell cycle analyses revealed that digitoxin induced G2/M cell cycle arrest via the serine/threonine-protein kinase ATR (ATR)-serine/threonine-protein kinase Chk2 (CHK2)-M-phase inducer phosphatase 3 (CDC25C) signaling pathway in HepG2/ADM cells, which may have resulted from a DNA double-stranded break. Digitoxin also induced mitochondrial apoptosis, which was characterized by changes in the interaction between Bcl-2 and Bax, the release of cytochrome c, as well as the activation of the caspase-3 and −9. To the best of our knowledge, the present study is the first report that digitoxin displays an anti-HCC effect on HepG2/ADM cells through G2/M cell cycle arrest, which was mediated by the ATR-CHK2-CDC25C signaling pathway and mitochondrial apoptosis. Therefore, digitoxin could be a promising chemotherapeutic agent for the treatment of patients with HCC.
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Affiliation(s)
- Yuhe Lei
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518034, P.R. China
| | - Hua Gan
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yuqing Huang
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yueyue Chen
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Lei Chen
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518034, P.R. China
| | - Aiyun Shan
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518034, P.R. China
| | - Huan Zhao
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Mansi Wu
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Xiaojuan Li
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Qingyu Ma
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jing Wang
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Enxin Zhang
- Department of Oncology, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518034, P.R. China
| | - Jiayan Zhang
- College of Chemistry and Materials Engineering, Huaihua University, Huaihua, Hunan 418000, P.R. China
| | - Yuanxiang Li
- College of Chemistry and Materials Engineering, Huaihua University, Huaihua, Hunan 418000, P.R. China
| | - Feifei Xue
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Lijuan Deng
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
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Eldawud R, Wagner A, Dong C, Gupta N, Rojanasakul Y, O'Doherty G, Stueckle TA, Dinu CZ. Potential antitumor activity of digitoxin and user-designed analog administered to human lung cancer cells. Biochim Biophys Acta Gen Subj 2020; 1864:129683. [PMID: 32679249 DOI: 10.1016/j.bbagen.2020.129683] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/19/2020] [Accepted: 07/09/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Cardiac glycosides (CGs), such as digitoxin, are traditionally used for treatment of congestive heart failure; recently they also gained attention for their anticancer properties. Previous studies showed that digitoxin and a synthetic L-sugar monosaccharide analog treatment decreases cancer cell proliferation, increases apoptosis, and pro-adhesion abilities; however, no reports are available on their potential to alter lung cancer cell cytoskeleton structure and reduce migratory ability. Herein, we investigated the anticancer effects of digitoxin and its analog, digitoxigenin-α-L-rhamnoside (D6MA), to establish whether cytoskeleton reorganization and reduced motility are drug-induced cellular outcomes. METHODS We treated non-small cell lung carcinoma cells (NSCLCs) with sub-therapeutic, therapeutic, and toxic concentrations of digitoxin and D6MA respectively, followed by both single point and real-time assays to evaluate changes in cellular gene and protein expression, adhesion, elasticity, and migration. RESULTS Digitoxin and D6MA induced a decrease in matrix metalloproteinases expression via altered focal adhesion signaling and a suppression of the phosphoinositide 3-kinases / protein kinase B pathway which lead to enhanced adhesion, altered elasticity, and reduced motility of NSCLCs. Global gene expression analysis identified dose-dependent changes to nuclear factor kappa-light-chain-enhancer, epithelial tumor, and microtubule dynamics signaling. CONCLUSIONS Our study demonstrates that digitoxin and D6MA can target antitumor signaling pathways to alter NSCLC cytoskeleton and migratory ability to thus potentially reduce their tumorigenicity. SIGNIFICANCE Discovering signaling pathways that control cancer's cell phenotype and how such pathways are affected by CG treatment will potentially allow for active usage of synthetic CG analogs as therapeutic agents in advanced lung conditions.
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Affiliation(s)
- Reem Eldawud
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Chenbo Dong
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Neha Gupta
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Yon Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, USA
| | - George O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Todd A Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
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23
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Gan H, Qi M, Chan C, Leung P, Ye G, Lei Y, Liu A, Xue F, Liu D, Ye W, Zhang D, Deng L, Chen J. Digitoxin inhibits HeLa cell growth through the induction of G2/M cell cycle arrest and apoptosis in vitro and in vivo. Int J Oncol 2020; 57:562-573. [PMID: 32468057 DOI: 10.3892/ijo.2020.5070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 05/12/2020] [Indexed: 11/05/2022] Open
Abstract
Cervical cancer is the fourth most common gynecological malignancy affecting the health of women worldwide and the second most common cause of cancer‑related mortality among women in developing regions. Thus, the development of effective chemotherapeutic drugs for the treatment of cervical cancer has become an important issue in the medical field. The application of natural products for the prevention and treatment of various diseases, particularly cancer, has always attracted widespread attention. In the present study, a library of natural products composed of 78 single compounds was screened and it was found that digitoxin exhibited the highest cytotoxicity against HeLa cervical cancer cells with an IC50 value of 28 nM at 48 h. Furthermore, digitoxin exhibited extensive antitumor activities in a variety of malignant cell lines, including the lung cancer cell line, A549, the hepatoma cell line, MHCC97H, and the colon cancer cell line, HCT116. Mechanistically, digitoxin caused DNA double‑stranded breaks (DSBs), inhibited the cell cycle at the G2/M phase via the ataxia telangiectasia mutated serine/threonine kinase (ATM)/ATM and Rad3‑related serine/threonine kinase (ATR)‑checkpoint kinase (CHK1)/checkpoint kinase 2 (CHK2)‑Cdc25C pathway and ultimately triggered mitochondrial apoptosis, which was characterized by the disruption of Bax/Bcl‑2, the release of cytochrome c and the sequential activation of caspases and poly(ADP‑ribose) polymerase (PARP). In addition, the in vivo anticancer effect of digitoxin was confirmed in HeLa cell xenotransplantation models. On the whole, the findings of the present study demonstrate the efficacy of digitoxin against cervical cancer in vivo and elucidate its molecular mechanisms, including DSBs, cell cycle arrest and mitochondrial apoptosis. These results will contribute to the development of digitoxin as a chemotherapeutic agent in the treatment of cervical cancer.
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Affiliation(s)
- Hua Gan
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Ming Qi
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Chakpiu Chan
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Pan Leung
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Geni Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yuhe Lei
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518034, P.R. China
| | - Aiai Liu
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Feifei Xue
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Dongdong Liu
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Wencai Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Dongmei Zhang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Lijuan Deng
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jiaxu Chen
- Formula‑pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
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Pessôa MTC, Valadares JMM, Rocha SC, Silva SC, McDermott JP, Sánchez G, Varotti FP, Scavone C, Ribeiro RIMA, Villar JAFP, Blanco G, Barbosa LA. 21-Benzylidene digoxin decreases proliferation by inhibiting the EGFR/ERK signaling pathway and induces apoptosis in HeLa cells. Steroids 2020; 155:108551. [PMID: 31812624 PMCID: PMC7028499 DOI: 10.1016/j.steroids.2019.108551] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/30/2019] [Accepted: 12/02/2019] [Indexed: 12/12/2022]
Abstract
Cardiotonic steroids (CTS) are agents traditionally known for their capacity to bind to the Na,K-ATPase (NKA), affecting the ion transport and the contraction of the heart. Natural CTS have been shown to also have effects on cell signaling pathways. With the goal of developing a new CTS derivative, we synthesized a new digoxin derivative, 21-benzylidene digoxin (21-BD). Previously, we have shown that this compound binds to NKA and has cytotoxic actions on cancer, but not on normal cells. Here, we further studied the mechanisms of actions of 21-BD. Working with HeLa cells, we found that 21-BD decreases the basal, as well as the insulin stimulated proliferation. 21-BD reduces phosphorylation of the epidermal growth factor receptor (EGFR) and extracellular-regulated kinase (ERK), which are involved in pathways that stimulate cell proliferation. In addition, 21-BD promotes apoptosis, which is mediated by the translocation of Bax from the cytosol to mitochondria and the release of mitochondrial cytochrome c to the cytosol. 21-BD also activated caspases-8, -9 and -3, and induced the cleavage of poly (ADP-ribose) polymerase-1 (PARP-1). Altogether, these results show that the new compound that we have synthesized exerts cytotoxic actions on HeLa cells by inhibition of cell proliferation and the activation of both the extrinsic and intrinsic apoptotic pathways. These results support the relevance of the cardiotonic steroid scaffold as modulators of cell signaling pathways and potential agents for their use in cancer.
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Affiliation(s)
- Marco Túlio C Pessôa
- Laboratório de Bioquímica Celular, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Jéssica M M Valadares
- Laboratório de Bioquímica Celular, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Sayonarah C Rocha
- Laboratório de Bioquímica Celular, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Simone C Silva
- Laboratório de Síntese Orgânica e Nanoestruturas, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Jeff P McDermott
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center (KUMC), Kansas City, KS, USA
| | - Gladis Sánchez
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center (KUMC), Kansas City, KS, USA
| | - Fernando P Varotti
- Núcleo de Pesquisa em Química Biológica (NQBio), Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Cristóforo Scavone
- Laboratório de Neurofarmacologia Molecular, Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Rosy I M A Ribeiro
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - José A F P Villar
- Laboratório de Síntese Orgânica e Nanoestruturas, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center (KUMC), Kansas City, KS, USA
| | - Leandro A Barbosa
- Laboratório de Bioquímica Celular, Universidade Federal de São João del-Rei (UFSJ) Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil.
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Chien CM, Yang JC, Wu PH, Wu CY, Chen GY, Wu YC, Chou CK, Tseng CH, Chen YL, Wang LF, Chiu CC. Phytochemical naphtho[1,2-b] furan-4,5‑dione induced topoisomerase II-mediated DNA damage response in human non-small-cell lung cancer. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 54:109-119. [PMID: 30668360 DOI: 10.1016/j.phymed.2018.06.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/18/2018] [Accepted: 06/18/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Phytochemical naphtho[1,2-b] furan-4,5‑dione (NFD) presenting in Avicennia marina exert anti-cancer effects, but little is known regarding about DNA damage-mediated apoptosis in non-small-cell lung carcinoma (NSCLC). PURPOSE To examine whether NFD-induced apoptosis of NSCLC cells is correlated with the induction of DNA damage, and to investigate its underlying mechanism. STUDY DESIGN The anti-proliferative effects of NFD were assessed by MTS Assay Kit FACS assay, and in vivo nude mice xenograft assay. The DNA damage related proteins, the Bcl-2 family and pro-apoptotic factors were examined by immunofluorescence assay, q-PCR, and western blotting. The activity of NF-κB p65 in nuclear extracts was detected using a colorimetric DNA-binding ELISA assay. The inhibitory activity of topoisomerase II (TOPO II) was evaluated by molecular docking and TOPO II catalytic assay. RESULTS NFD exerted selective cytotoxicity against NSCLC H1299, H1437 and A549 cells rather than normal lung-embryonated cells MRC-5. Remarkably, we found that NFD activated the hull marker and modulator of DNA damage repairs such as γ-H2AX, ATM, ATR, CHK1, and CHK2 probably caused by the accumulation of intracellular reactive oxygen species (ROS) and inhibition of TOPO II activity. Furthermore, the suppression of transcription factor NF-κB by NFD resulted in significantly decreased levels of pro-survival proteins including Bcl-2 family Bcl-2, Bcl-xL and Mcl-1 and the endogenous inhibitors of apoptosis XIAP and survivin in H1299 cells. Moreover, the nude mice xenograft assay further validated the suppression of H1299 growth by NFD, which is the first report for evaluating the anti-cancer effect of NFD in vivo. CONCLUSION These findings provide a novel mechanism indicating the inhibition of TOPO II activity and NF-κB signaling by NFD, leading to DNA damage and apoptosis of NSCLC tumor cells.
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Affiliation(s)
- Ching-Ming Chien
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, Taiwan
| | - Juan-Cheng Yang
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan; BioActive Lipid Research Center, BenQ Medical Center, Suzhou, Jiangsu Province, China; Research Center for Natural Products & Drug development, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pin-Hsuan Wu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Guan-Yu Chen
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan
| | - Yang-Chang Wu
- Research Center for Natural Products & Drug development, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chon-Kit Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Hua Tseng
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yeh-Long Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Li-Fang Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan; Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Cancer Center, Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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26
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Deng K, Shen J, Wang W, Li M, Li H, Chen C, Zhao H, Zhang M, Xue T, Liu Q, Lui VWY, Hong B, Lin W. Sodium chloride (NaCl) potentiates digoxin-induced anti-tumor activity in small cell lung cancer. Cancer Biol Ther 2018; 20:52-64. [PMID: 30183476 DOI: 10.1080/15384047.2018.1504723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Small cell lung cancer (SCLC) is a malignant neuroendocrine tumor with very high mortality. Effective new therapy for advanced SCLC patients is urgently needed. By screening a FDA-approved drug library, we identified a cardiac glycoside (CG), namely digoxin (an inhibitor of cellular Na+/K+ ATPase pump), which was highly effective in inhibiting SCLC cell growth. Intriguing findings showed that NaCl supplement markedly enhanced the anti-tumor activities of digoxin in both in vitro and in vivo models of SCLC. Subsequent analysis revealed that this novel combination of digoxin/NaCl caused an up-regulation of intracellular Na+ and Ca2+ levels with an induction of higher resting membrane potential of SCLC cells. We also found that this combination lead to morphological shrinking of SCLC cells, together with high levels of cytochrome C release. Lastly, our data revealed that NaCl supplement was able to induce the expression of ATP1A1 (a Na+/K+ ATPase subunit), in which contributes directly to the increased sensitivity of SCLC cells to digoxin. Thus, this is the first demonstration that NaCl is a potent supplement necessitating superior anti-cancer effects of digoxin for SCLC. Further, our study suggests that digoxin treatment could need to be combined with NaCl supplement in future clinical trial of SCLC, particularly where low Na+ is often present in SCLC patients.
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Affiliation(s)
- Ke Deng
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,b University of Science and Technology of China , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Jiawei Shen
- d School of Life Sciences , University of Science and Technology of China , Hefei , P. R. China
| | - Wei Wang
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Ming Li
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,b University of Science and Technology of China , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China.,e Department of Laboratory Diagnostics , Western Branch of The First Affiliated Hospital of University of Science and Technology of China , Hefei , P. R. China
| | - Hong Li
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Cheng Chen
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,b University of Science and Technology of China , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Huan Zhao
- d School of Life Sciences , University of Science and Technology of China , Hefei , P. R. China
| | - Mei Zhang
- d School of Life Sciences , University of Science and Technology of China , Hefei , P. R. China
| | - Tian Xue
- d School of Life Sciences , University of Science and Technology of China , Hefei , P. R. China
| | - Qingsong Liu
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Vivian Wai Yan Lui
- f School of Biomedical Sciences, Faculty of Medicine , The Chinese University of Hong Kong , Hong Kong SAR
| | - Bo Hong
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
| | - Wenchu Lin
- a High Magnetic Field Laboratory , Chinese Academy of Sciences , Hefei , P. R. China.,c Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei , P. R. China
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27
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Schneider NFZ, Cerella C, Lee JY, Mazumder A, Kim KR, de Carvalho A, Munkert J, Pádua RM, Kreis W, Kim KW, Christov C, Dicato M, Kim HJ, Han BW, Braga FC, Simões CMO, Diederich M. Cardiac Glycoside Glucoevatromonoside Induces Cancer Type-Specific Cell Death. Front Pharmacol 2018; 9:70. [PMID: 29545747 PMCID: PMC5838923 DOI: 10.3389/fphar.2018.00070] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/19/2018] [Indexed: 11/25/2022] Open
Abstract
Cardiac glycosides (CGs) are natural compounds used traditionally to treat congestive heart diseases. Recent investigations repositioned CGs as potential anticancer agents. To discover novel cytotoxic CG scaffolds, we selected the cardenolide glucoevatromonoside (GEV) out of 46 CGs for its low nanomolar anti-lung cancer activity. GEV presented reduced toxicity toward non-cancerous cell types (lung MRC-5 and PBMC) and high-affinity binding to the Na+/K+-ATPase α subunit, assessed by computational docking. GEV-induced cell death was caspase-independent, as investigated by a multiparametric approach, and culminates in severe morphological alterations in A549 cells, monitored by transmission electron microscopy, live cell imaging and flow cytometry. This non-canonical cell death was not preceded or accompanied by exacerbation of autophagy. In the presence of GEV, markers of autophagic flux (e.g. LC3I-II conversion) were impacted, even in presence of bafilomycin A1. Cell death induction remained unaffected by calpain, cathepsin, parthanatos, or necroptosis inhibitors. Interestingly, GEV triggered caspase-dependent apoptosis in U937 acute myeloid leukemia cells, witnessing cancer-type specific cell death induction. Differential cell cycle modulation by this CG led to a G2/M arrest, cyclin B1 and p53 downregulation in A549, but not in U937 cells. We further extended the anti-cancer potential of GEV to 3D cell culture using clonogenic and spheroid formation assays and validated our findings in vivo by zebrafish xenografts. Altogether, GEV shows an interesting anticancer profile with the ability to exert cytotoxic effects via induction of different cell death modalities.
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Affiliation(s)
- Naira F Z Schneider
- Laboratorio de Virologia Applicada, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Claudia Cerella
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, Luxembourg, Luxembourg.,Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jin-Young Lee
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Aloran Mazumder
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Kyung Rok Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Annelise de Carvalho
- Laboratorio de Virologia Applicada, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Jennifer Munkert
- Department of Biology, Friedrich-Alexander Universität, Erlangen-Nürnberg, Erlangen, Germany
| | - Rodrigo M Pádua
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Wolfgang Kreis
- Department of Biology, Friedrich-Alexander Universität, Erlangen-Nürnberg, Erlangen, Germany
| | - Kyu-Won Kim
- SNU-Harvard Neurovascular Protection Center, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
| | | | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, Luxembourg, Luxembourg
| | - Hyun-Jung Kim
- College of Pharmacy, Chung-Ang University, Seoul, South Korea
| | - Byung Woo Han
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Fernão C Braga
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cláudia M O Simões
- Laboratorio de Virologia Applicada, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Marc Diederich
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
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Schneider NFZ, Persich L, Rocha SC, Ramos ACP, Cortes VF, Silva IT, Munkert J, Pádua RM, Kreis W, Taranto AG, Barbosa LA, Braga FC, Simões CM. Cytotoxic and cytostatic effects of digitoxigenin monodigitoxoside (DGX) in human lung cancer cells and its link to Na,K-ATPase. Biomed Pharmacother 2018; 97:684-696. [DOI: 10.1016/j.biopha.2017.10.128] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/11/2017] [Accepted: 10/23/2017] [Indexed: 01/31/2023] Open
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Shen M, Asawa R, Zhang YQ, Cunningham E, Sun H, Tropsha A, Janzen WP, Muratov EN, Capuzzi SJ, Farag S, Jadhav A, Blatt J, Simeonov A, Martinez NJ. Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing. Oncotarget 2017; 9:4758-4772. [PMID: 29435139 PMCID: PMC5797010 DOI: 10.18632/oncotarget.23462] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/26/2017] [Indexed: 01/10/2023] Open
Abstract
Drug repurposing approaches have the potential advantage of facilitating rapid and cost-effective development of new therapies. Particularly, the repurposing of drugs with known safety profiles in children could bypass or streamline toxicity studies. We employed a phenotypic screening paradigm on a panel of well-characterized cell lines derived from pediatric solid tumors against a collection of ∼3,800 compounds spanning approved drugs and investigational agents. Specifically, we employed titration-based screening where compounds were tested at multiple concentrations for their effect on cell viability. Molecular and cellular target enrichment analysis indicated that numerous agents across different therapeutic categories and modes of action had an antiproliferative effect, notably antiparasitic/protozoal drugs with non-classic antineoplastic activity. Focusing on active compounds with dosing and safety information in children according to the Children's Pharmacy Collaborative database, we identified compounds with therapeutic potential through further validation using 3D tumor spheroid models. Moreover, we show that antiparasitic agents induce cell death via apoptosis induction. This study demonstrates that our screening platform enables the identification of chemical agents with cytotoxic activity in pediatric cancer cell lines of which many have known safety/toxicity profiles in children. These agents constitute attractive candidates for efficacy studies in pre-clinical models of pediatric solid tumors.
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Affiliation(s)
- Min Shen
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Rosita Asawa
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Ya-Qin Zhang
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Elizabeth Cunningham
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Hongmao Sun
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Alexander Tropsha
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | | | - Eugene N Muratov
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | - Stephen J Capuzzi
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | - Sherif Farag
- Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
| | - Ajit Jadhav
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Julie Blatt
- Division of Pediatric Hematology Oncology, University of North Carolina, Chapel Hill, NC, USA.,Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - Anton Simeonov
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
| | - Natalia J Martinez
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA
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Digoxin enhances radiation response in radioresistant A549 cells by reducing protein phosphatase 2A. Biosci Rep 2017; 37:BSR20171257. [PMID: 29070518 PMCID: PMC5707360 DOI: 10.1042/bsr20171257] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 12/10/2017] [Accepted: 10/23/2017] [Indexed: 12/26/2022] Open
Abstract
Protein phosphatase 2A (PP2A) is a ubiquitous multifunctional enzyme usually known as a tumor suppressor. Recent studies have reported that although inhibition of PP2A leads to acceleration of cell growth, it also induces damaged cells to pass through the cell cycle and renders them sensitive to radiotherapy. Here, we investigated the radiosensitizing effects of digoxin as a PP2A inhibitor in two non-small-cell lung cancer (NSCLC) cell types (H460 and A549) with differential sensitivity to radiation. Digoxin inhibited the proliferation of H460 and A549 cells in a dose-dependent fashion and was especially effective on radioresistant A549 cells. Interestingly, the radiosensitizing effect of digoxin was only present in the radioresistant A549 cells and xenografts. The combination of digoxin and ionizing radiation (IR) significantly reduced clonogenic survival and xenograft tumor growth (P<0.001), compared with IR alone. Digoxin suppressed PP2A protein expression and prevented IR-induced PP2A expression in A549 cells. Digoxin treatment combined with IR allowed the damaged cell to progress through the cell cycle via suppression of cell cycle-related proteins (p53, cyclin D1, cyclin B1, CDK4, and p-cdc2). Moreover, digoxin enhanced IR-induced DNA damage through reduction in levels of repair proteins and elevation of p-ATM foci formation up to 24 h (P<0.001). In conclusion, digoxin has a novel function as a PP2A inhibitor, and combined with IR produces a synergistic effect on radiosensitizing cells, thereby indicating a potentially promising therapeutic approach to radioresistant lung cancer treatment.
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Pessôa MTC, Alves SLG, Taranto AG, Villar JAFP, Blanco G, Barbosa LA. Selectivity analyses of γ-benzylidene digoxin derivatives to different Na,K-ATPase α isoforms: a molecular docking approach. J Enzyme Inhib Med Chem 2017; 33:85-97. [PMID: 29115894 PMCID: PMC6009882 DOI: 10.1080/14756366.2017.1380637] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Digoxin and other cardiotonic steroids (CTS) exert their effect by inhibiting Na,K-ATPase (NKA) activity. CTS bind to the various NKA isoforms that are expressed in different cell types, which gives CTS their narrow therapeutic index. We have synthesised a series of digoxin derivatives (γ-Benzylidene digoxin derivatives) with substitutions in the lactone ring (including non-oxygen and ether groups), to obtain CTS with better NKA isoform specificity. Some of these derivatives show some NKA isoform selective effects, with BD-3, BD-8, and BD-13 increasing NKA α2 activity, BD-5 inhibiting NKA α1 and NKA α3, BD-10 reducing NKA α1, but stimulating NKA α2 and α3; and BD-14, BD-15, and BD-16 enhancing NKA α3 activity. A molecular-docking approach favoured NKA isoform specific interactions for the compounds that supported their observed activity. These results show that BD compounds are a new type of CTS with the capacity to target NKA activity in an isoform-specific manner.
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Affiliation(s)
- Marco T C Pessôa
- a Laboratório de Bioquímica Celular , Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú , Divinópolis , Brazil
| | - Silmara L G Alves
- b Laboratório de Síntese Orgânica e Nanoestruturas , Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú , Divinópolis , Brazil
| | - Alex G Taranto
- c Laboratório de Modelagem Molecular , Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú , Divinópolis , Brazil
| | - José A F P Villar
- b Laboratório de Síntese Orgânica e Nanoestruturas , Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú , Divinópolis , Brazil
| | - Gustavo Blanco
- d Department of Molecular and Integrative Physiology , Kansas University Medical Center , Kansas City , KS , USA
| | - Leandro A Barbosa
- a Laboratório de Bioquímica Celular , Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú , Divinópolis , Brazil
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32
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Nolte E, Wach S, Silva IT, Lukat S, Ekici AB, Munkert J, Müller-Uri F, Kreis W, Oliveira Simões CM, Vera J, Wullich B, Taubert H, Lai X. A new semisynthetic cardenolide analog 3β-[2-(1-amantadine)- 1-on-ethylamine]-digitoxigenin (AMANTADIG) affects G2/M cell cycle arrest and miRNA expression profiles and enhances proapoptotic survivin-2B expression in renal cell carcinoma cell lines. Oncotarget 2017; 8:11676-11691. [PMID: 28099931 PMCID: PMC5355295 DOI: 10.18632/oncotarget.14644] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 12/24/2016] [Indexed: 12/14/2022] Open
Abstract
Cardiac glycosides are well known in the treatment of cardiovascular diseases; however, their application as treatment option for cancer patients is under discussion. We showed that the cardiac glycoside digitoxin and its analog AMANTADIG can inhibit the growth of renal cell carcinoma (RCC) cell lines and increase G2/M cell cycle arrest. To identify the signaling pathways and molecular basis of this G2/M arrest, microRNAs were profiled using microRNA arrays. Cardiac glycoside treatment significantly deregulated two microRNAs, miR-2278 and miR-670-5p. Pathway enrichment analysis showed that all cardiac glycoside treatments affected the MAPK and the axon guidance pathway. Within these pathways, three genes, MAPK1, NRAS and RAC2, were identified as in silico targets of the deregulated miRNAs. MAPK1 and NRAS are known regulators of G2/M cell cycle arrest. AMANTADIG treatment enhanced the expression of phosphorylated MAPK1 in 786-O cells. Secondly, we studied the expression of survivin known to be affected by cardiac glycosides and to regulate the G2/M cell phase. AMANTADIG treatment upregulated the expression of the pro-apoptotic survivin-2B variant in Caki-1 and 786-O cells. Moreover, treatment with AMANTADIG resulted in significantly lower survivin protein expression compared to 786-O control cells. Summarizing, treatment with all cardiac glycosides induced G2/M cell cycle arrest and downregulated the miR-2278 and miR-670-5p in microarray analysis. All cardiac glycosides affected the MAPK-pathway and survivin expression, both associated with the G2/M phase. Because cells in the G2/M phase are radio- and chemotherapy sensitive, cardiac glycosides like AMANTADIG could potentially improve the efficacy of radio- and/or chemotherapy in RCCs.
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Affiliation(s)
- Elke Nolte
- Department of Urology, University Hospital Erlangen, Erlangen, Germany
| | - Sven Wach
- Department of Urology, University Hospital Erlangen, Erlangen, Germany
| | - Izabella Thais Silva
- Department of Pharmaceutical Sciences, Universidade Federal de Santa Catarina, Florianópolis, Brazil.,Department of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Sabine Lukat
- Department of Urology, University Hospital Erlangen, Erlangen, Germany
| | - Arif B Ekici
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jennifer Munkert
- Department of Biology, Chair of Pharmaceutical Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Frieder Müller-Uri
- Department of Biology, Chair of Pharmaceutical Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Wolfgang Kreis
- Department of Biology, Chair of Pharmaceutical Biology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | | | - Julio Vera
- Laboratory of Systems Tumor Immunology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Bernd Wullich
- Department of Urology, University Hospital Erlangen, Erlangen, Germany
| | - Helge Taubert
- Department of Urology, University Hospital Erlangen, Erlangen, Germany
| | - Xin Lai
- Laboratory of Systems Tumor Immunology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
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Preya UH, Lee KT, Kim NJ, Lee JY, Jang DS, Choi JH. The natural terthiophene α-terthienylmethanol induces S phase cell cycle arrest of human ovarian cancer cells via the generation of ROS stress. Chem Biol Interact 2017; 272:72-79. [PMID: 28506552 DOI: 10.1016/j.cbi.2017.05.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 04/19/2017] [Accepted: 05/11/2017] [Indexed: 12/11/2022]
Abstract
Ovarian cancer is the most lethal gynecological malignancy worldwide. Thiophenes such as terthiophene have been shown to have anti-tumor effects on several cancer cell lines, including ovarian cancer cells. However, the underlying mechanisms behind the anti-proliferative effect of thiophenes are poorly understood. In this study, we investigated the molecular mechanisms underlying the anti-proliferative effect of α-terthienylmethanol, a terthiophene isolated from Eclipta prostrata (False Daisy), on human ovarian cancer cells. We found that α-terthienylmethanol is a more potent inhibitor of cell growth than is cisplatin in human ovarian cancer cells. α-Terthienylmethanol induces cell cycle arrest in ovarian cancer cells, as shown by the accumulation of cells in S phase. In addition, α-terthienylmethanol induced a change in S phase-related proteins cyclin A, cyclin-dependent kinase 2, and cyclin D2. Knockdown of cyclin A using specific siRNAs significantly compromised α-terthienylmethanol-induced S phase arrest. We further demonstrated that α-terthienylmethanol induced an increase in intracellular ROS, and the antioxidant N-acetyl-l-cysteine significantly reversed the S phase arrest induced by α-terthienylmethanol. Moreover, α-terthienylmethanol significantly increased the levels of p-H2AX, a DNA damage marker. These results suggest that α-terthienylmethanol inhibits the growth of human ovarian cancer cells by S phase cell cycle arrest via induction of ROS stress and DNA damage.
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Affiliation(s)
- Umma Hafsa Preya
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Kyung-Tae Lee
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Jung-Yun Lee
- Department of Plant Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea
| | - Dae Sik Jang
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Jung-Hye Choi
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea.
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Na/K Pump and Beyond: Na/K-ATPase as a Modulator of Apoptosis and Autophagy. Molecules 2017; 22:molecules22040578. [PMID: 28430151 PMCID: PMC6154632 DOI: 10.3390/molecules22040578] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/29/2017] [Accepted: 03/29/2017] [Indexed: 01/22/2023] Open
Abstract
Lung cancer is a leading cause of global cancer deaths. Na/K-ATPase has been studied as a target for cancer treatment. Cardiotonic steroids (CS) trigger intracellular signalling upon binding to Na/K-ATPase. Normal lung and tumour cells frequently express different pump isoforms. Thus, Na/K-ATPase is a powerful target for lung cancer treatment. Drugs targeting Na/K-ATPase may induce apoptosis and autophagy in transformed cells. We argue that Na/K-ATPase has a role as a potential target in chemotherapy in lung cancer treatment. We discuss the effects of Na/K-ATPase ligands and molecular pathways inducing deleterious effects on lung cancer cells, especially those leading to apoptosis and autophagy.
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35
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Fong Y, Wu CY, Chang KF, Chen BH, Chou WJ, Tseng CH, Chen YC, Wang HMD, Chen YL, Chiu CC. Dual roles of extracellular signal-regulated kinase (ERK) in quinoline compound BPIQ-induced apoptosis and anti-migration of human non-small cell lung cancer cells. Cancer Cell Int 2017; 17:37. [PMID: 28286419 PMCID: PMC5339964 DOI: 10.1186/s12935-017-0403-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 02/16/2017] [Indexed: 02/06/2023] Open
Abstract
Background 2,9-Bis[2-(pyrrolidin-1-yl)ethoxy]-6-{4-[2-(pyrrolidin-1-yl)ethoxy] phenyl}-11H-indeno[1,2-c]quinoline-11-one (BPIQ), is a synthetic quinoline analog. A previous study showed the anti-cancer potential of BPIQ through modulating mitochondrial-mediated apoptosis. However, the effect of BPIQ on cell migration, an index of cancer metastasis, has not yet been examined. Furthermore, among signal pathways involved in stresses, the members of the mitogen-activated protein kinase (MAPK) family are crucial for regulating the survival and migration of cells. In this study, the aim was to explore further the role of MAPK members, including JNK, p38 and extracellular signal-regulated kinase (ERK) in BPIQ-induced apoptosis and anti-migration of human non-small cell lung cancer (NSCLC) cells. Methods Western Blot assay was performed for detecting the activation of MAPK members in NSCLC H1299 cells following BPIQ administration. Cellular proliferation was determined using a trypan blue exclusion assay. Cellular apoptosis was detected using flow cytometer-based Annexin V/propidium iodide dual staining. Cellular migration was determined using wound-healing assay and Boyden’s chamber assay. Zymography assay was performed for examining MMP-2 and -9 activities. The assessment of MAPK inhibition was performed for further validating the role of JNK, p38, and ERK in BPIQ-induced growth inhibition, apoptosis, and migration of NSCLC cells. Results Western Blot assay showed that BPIQ treatment upregulates the phosphorylated levels of both MAPK proteins JNK and ERK. However, only ERK inhibitor rescues BPIQ-induced growth inhibition of NSCLC H1299 cells. The results of Annexin V assay further confirmed the pro-apoptotic role of ERK in BPIQ-induced cell death of H1299 cells. The results of wound healing and Boyden chamber assays showed that sub-IC50 (sub-lethal) concentrations of BPIQ cause a significant inhibition of migration in H1299 cells accompanied with downregulating the activity of MMP-2 and -9, the motility index of cancer cells. Inhibition of ERK significantly enhances BPIQ-induced anti-migration of H1299 cells. Conclusions Our results suggest ERK may play dual roles in BPIQ-induced apoptosis and anti-migration, and it would be worthwhile further developing strategies for treating chemoresistant lung cancers through modulating ERK activity. Electronic supplementary material The online version of this article (doi:10.1186/s12935-017-0403-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yao Fong
- Department of Thoracic Surgery, Chi-Mei Medical Center, Tainan, 710 Taiwan
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 804 Taiwan.,Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Kuo-Feng Chang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Bing-Hung Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,The Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, 804 Taiwan
| | - Wan-Ju Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Chih-Hua Tseng
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Yen-Chun Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Hui-Min David Wang
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung, 402 Taiwan
| | - Yeh-Long Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Chien-Chih Chiu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 804 Taiwan.,Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,Translational Research Center, Cancer Center and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807 Taiwan.,Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
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36
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Schneider NFZ, Silva IT, Persich L, de Carvalho A, Rocha SC, Marostica L, Ramos ACP, Taranto AG, Pádua RM, Kreis W, Barbosa LA, Braga FC, Simões CMO. Cytotoxic effects of the cardenolide convallatoxin and its Na,K-ATPase regulation. Mol Cell Biochem 2017; 428:23-39. [DOI: 10.1007/s11010-016-2914-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 12/21/2016] [Indexed: 01/08/2023]
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37
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Xiao Y, Yan W, Guo L, Meng C, Li B, Neves H, Chen PC, Li L, Huang Y, Kwok HF, Lin Y. Digitoxin synergizes with sorafenib to inhibit hepatocelluar carcinoma cell growth without inhibiting cell migration. Mol Med Rep 2016; 15:941-947. [PMID: 28035421 DOI: 10.3892/mmr.2016.6096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 11/24/2016] [Indexed: 11/06/2022] Open
Abstract
Sorafenib is a chemotherapeutic agent approved for the treatment of hepatocellular carcinoma (HCC) in China. Digitoxin is a cardiotonic drug, which has been demonstrated to exhibit anticancer effects in a number of cancers, but not in HCC. The aim of the present study was to evaluate the combinational effect of sorafenib and digitoxin on the treatment of HCC and to investigate the relevant molecular mechanisms of action that underlie these effects. The proliferation, cell death and migration of HCC cell lines, HepG2 and BEL‑7402, were examined using MTT, acridine orange/ethidium bromide staining and scratch wound healing assays, respectively. In addition, alterations in the expression of phosphorylated-extracellular signal-regulated kinase (ERK), hypoxia‑inducible factor 1‑α (HIF‑1α), hypoxia‑inducible factor 2‑α (HIF‑2α) and vascular endothelial growth factor (VEGF) were measured prior to and following drug application using western blot analysis. Digitoxin and sorafenib synergistically inhibited cell viability, but did not inhibit migration, which was potentially mediated by suppression of ERK and hypoxia signaling. In downstream signaling pathways, the activity of ERK was synergistically suppressed by combinatorial treatment of HepG2 and BEL‑7402 cells with sorafenib and digitoxin. In addition, the expression of HIF‑1α, HIF‑2α and VEGF was synergistically downregulated by combinational treatment.
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Affiliation(s)
- Yijun Xiao
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Wei Yan
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Libin Guo
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Chen Meng
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Bin Li
- Faculty of Health Sciences, University of Macau, Avenida de Universidade, Taipa, Macau SAR, P.R. China
| | - Henrique Neves
- Faculty of Health Sciences, University of Macau, Avenida de Universidade, Taipa, Macau SAR, P.R. China
| | - Peng-Chen Chen
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Ling Li
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian, P.R. China
| | - Yide Huang
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
| | - Hang Fai Kwok
- Faculty of Health Sciences, University of Macau, Avenida de Universidade, Taipa, Macau SAR, P.R. China
| | - Yao Lin
- College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, P.R. China
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Tesselaar MH, Crezee T, Swarts HG, Gerrits D, Boerman OC, Koenderink JB, Stunnenberg HG, Netea MG, Smit JW, Netea-Maier RT, Plantinga TS. Digitalis-like Compounds Facilitate Non-Medullary Thyroid Cancer Redifferentiation through Intracellular Ca2+, FOS, and Autophagy-Dependent Pathways. Mol Cancer Ther 2016; 16:169-181. [DOI: 10.1158/1535-7163.mct-16-0460] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/26/2016] [Accepted: 10/17/2016] [Indexed: 11/16/2022]
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Compound Library Screening Identified Cardiac Glycoside Digitoxin as an Effective Growth Inhibitor of Gefitinib-Resistant Non-Small Cell Lung Cancer via Downregulation of α-Tubulin and Inhibition of Microtubule Formation. Molecules 2016; 21:374. [PMID: 26999101 PMCID: PMC6274445 DOI: 10.3390/molecules21030374] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 12/25/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) dominates over 85% of all lung cancer cases. Epidermal growth factor receptor (EGFR) activating mutation is a common situation in NSCLC. In the clinic, molecular-targeting with Gefitinib as a tyrosine kinase inhibitor (TKI) for EGFR downstream signaling is initially effective. However, drug resistance frequently happens due to additional mutation on EGFR, such as substitution from threonine to methionine at amino acid position 790 (T790M). In this study, we screened a traditional Chinese medicine (TCM) compound library consisting of 800 single compounds in TKI-resistance NSCLC H1975 cells, which contains substitutions from leucine to arginine at amino acid 858 (L858R) and T790M mutation on EGFR. Attractively, among these compounds there are 24 compounds CC50 of which was less than 2.5 μM were identified. We have further investigated the mechanism of the most effective one, Digitoxin. It showed a significantly cytotoxic effect in H1975 cells by causing G2 phase arrest, also remarkably activated 5' adenosine monophosphate-activated protein kinase (AMPK). Moreover, we first proved that Digitoxin suppressed microtubule formation through decreasing α-tubulin. Therefore, it confirmed that Digitoxin effectively depressed the growth of TKI-resistance NSCLC H1975 cells by inhibiting microtubule polymerization and inducing cell cycle arrest.
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40
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Affeldt RF, Santos FP, da Silva RS, Rodrigues OED, Wessjohann LA, Lüdtke DS. Stereoselective glycoconjugation of steroids with selenocarbohydrates. RSC Adv 2016. [DOI: 10.1039/c6ra21485a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A methodology that brings together sugar and steroid scaffolds linked by a selenium atom is discussed in this work.
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Affiliation(s)
- Ricardo F. Affeldt
- Institute of Chemistry
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
- Leibniz Institute of Plant Biochemistry
| | - Francisco P. Santos
- Institute of Chemistry
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | | | | | | | - Diogo S. Lüdtke
- Institute of Chemistry
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
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Chiu CC, Chou HL, Chen BH, Chang KF, Tseng CH, Fong Y, Fu TF, Chang HW, Wu CY, Tsai EM, Lin SR, Chen YL. BPIQ, a novel synthetic quinoline derivative, inhibits growth and induces mitochondrial apoptosis of lung cancer cells in vitro and in zebrafish xenograft model. BMC Cancer 2015; 15:962. [PMID: 26672745 PMCID: PMC4682281 DOI: 10.1186/s12885-015-1970-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/01/2015] [Indexed: 11/30/2022] Open
Abstract
Background 2,9-Bis[2-(pyrrolidin-1-yl)ethoxy]-6-{4-[2-(pyrrolidin-1-yl)ethoxy] phenyl}-11H-indeno[1,2-c]quinolin-11-one (BPIQ) is a derivative from 6-arylindeno[1,2-c]quinoline. Our previous study showed the anti-cancer potential of BPIQ compared to its two analogues topotecan and irinotecan. In the study, the aim is to investigate the potency and the mechanism of BPIQ against lung cancer cells. Methods Both in vitro and zebrafish xenograft model were performed to examine the anti-lung cancer effect of BPIQ. Flow cytometer-based assays were performed for detecting apoptosis and cell cycle distribution. Western blot assay was used for detecting the changes of apoptotic and cell cycle-associated proteins. siRNA knockdown assay was performed for confirming the apoptotic role of Bim. Results Both in vitro and zebrafish xenograft model demonstrated the anti-lung cancer effect of BPIQ. BPIQ-induced proliferative inhibition of H1299 cells was achieved through the induction of G2/M-phase arrest and apoptosis. The results of Western blot showed that BPIQ-induced G2/M-phase arrest was associated with a marked decrease in the protein levels of cyclin B and cyclin-dependent kinase 1 (CDK1). The up-regulation of pro-apoptotic Bad, Bim and down-regulation of pro-survival XIAP and survivin was observed following BPIQ treatment. Conclusions BPIQ-induced anti-lung cancer is involved in mitochondrial apoptosis. BPIQ could be a promising anti-lung cancer drug for further applications. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1970-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan. .,Translational Research Center, Cancer Center, Department of Medical Research, and Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan.
| | - Han-Lin Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan.
| | - Bing-Hung Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan.
| | - Kuo-Feng Chang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Chih-Hua Tseng
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. .,Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Yao Fong
- Department of Thoracic Surgery, Chi-Mei Medical Center, Tainan, 710, Taiwan.
| | - Tzu-Fun Fu
- Department of Medical Laboratory Science and Biotechnology, School of Medicine, National Cheng Kung University, Tainan, 701, Taiwan.
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University; Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan.
| | - Eing-Mei Tsai
- Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Shinne-Ren Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Yeh-Long Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
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Zhang J, Ponomareva LV, Nandurkar NS, Yuan Y, Fang L, Zhan CG, Thorson JS. Influence of Sugar Amine Regiochemistry on Digitoxigenin Neoglycoside Anticancer Activity. ACS Med Chem Lett 2015; 6:1053-8. [PMID: 26487911 DOI: 10.1021/acsmedchemlett.5b00120] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/12/2015] [Indexed: 02/08/2023] Open
Abstract
The synthesis of a set of digitoxigenin neogluco/xylosides and corresponding study of their anticancer SAR revealed sugar amine regiochemistry has a dramatic effect upon activity. Specifically, this study noted sugar 3-amino followed by 4-amino-substitution to be most advantageous where the solvent accessibility of the appended amine within neoglycoside-Na(+),K(+)-ATPase docked models correlated with increased anticancer potency. This study presents a preliminary model for potential further warhead optimization in the context of antibody-directed steroidal glycosides and extends the demonstrated compatibility of aminosugars in the context of neoglycosylation.
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Affiliation(s)
- Jianjun Zhang
- Center for Pharmaceutical Research and
Innovation and ‡Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Larissa V. Ponomareva
- Center for Pharmaceutical Research and
Innovation and ‡Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Nitin S. Nandurkar
- Center for Pharmaceutical Research and
Innovation and ‡Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | | | | | | | - Jon S. Thorson
- Center for Pharmaceutical Research and
Innovation and ‡Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
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Bylda C, Thiele R, Kobold U, Volmer DA. Simultaneous quantification of digoxin, digitoxin, and their metabolites in serum using high performance liquid chromatography-tandem mass spectrometry. Drug Test Anal 2015; 7:937-46. [PMID: 25735870 DOI: 10.1002/dta.1781] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/05/2015] [Accepted: 02/05/2015] [Indexed: 12/29/2022]
Abstract
The study describes an LC-MS/MS method for simultaneous quantification of the cardiac glycosidic drugs digoxin and digitoxin and several of their metabolites. The assay represents a useful reference method for immunoassay-based tests, which are easily biased by the presence of metabolites of the target analytes or structurally similar substances.
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Affiliation(s)
- Caroline Bylda
- Roche Diagnostics GmbH, Penzberg, Germany.,Institute of Bioanalytical Chemistry, Saarland University, Saarbrücken, Germany
| | | | - Uwe Kobold
- Roche Diagnostics GmbH, Penzberg, Germany
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, Saarbrücken, Germany
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44
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Magpusao AN, Omolloh G, Johnson J, Gascón J, Peczuh MW, Fenteany G. Cardiac glycoside activities link Na(+)/K(+) ATPase ion-transport to breast cancer cell migration via correlative SAR. ACS Chem Biol 2015; 10:561-9. [PMID: 25334087 PMCID: PMC4340362 DOI: 10.1021/cb500665r] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
![]()
The cardiac glycosides ouabain and
digitoxin, established Na+/K+ ATPase inhibitors,
were found to inhibit MDA-MB-231
breast cancer cell migration through an unbiased chemical genetics
screen for cell motility. The Na+/K+ ATPase
acts both as an ion-transporter and as a receptor for cardiac glycosides.
To delineate which function is related to breast cancer cell migration,
structure–activity relationship (SAR) profiles of cardiac glycosides
were established at the cellular (cell migration inhibition), molecular
(Na+/K+ ATPase inhibition), and atomic (computational
docking) levels. The SAR of cardiac glycosides and their analogs revealed
a similar profile, a decrease in potency when the parent cardiac glycoside
structure was modified, for each activity investigated. Since assays
were done at the cellular, molecular, and atomic levels, correlation
of SAR profiles across these multiple assays established links between
cellular activity and specific protein–small molecule interactions.
The observed antimigratory effects in breast cancer cells are directly
related to the inhibition of Na+/K+ transport.
Specifically, the orientation of cardiac glycosides at the putative
cation permeation path formed by transmembrane helices αM1–M6
correlates with the Na+ pump activity and cell migration.
Other Na+/K+ ATPase inhibitors that are structurally
distinct from cardiac glycosides also exhibit antimigratory activity,
corroborating the conclusion that the antiport function of Na+/K+ ATPase and not the receptor function is important
for supporting the motility of MDA-MB-231 breast cancer cells. Correlative
SAR can establish new relationships between specific biochemical functions
and higher-level cellular processes, particularly for proteins with
multiple functions and small molecules with unknown or various modes
of action.
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Affiliation(s)
- Anniefer N. Magpusao
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - George Omolloh
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Joshua Johnson
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - José Gascón
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
| | - Gabriel Fenteany
- Department of Chemistry, University of Connecticut, 55 N.
Eagleville Road, U3060, Storrs, Connecticut 06269, United States
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45
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Menger L, Vacchelli E, Kepp O, Eggermont A, Tartour E, Zitvogel L, Kroemer G, Galluzzi L. Trial watch: Cardiac glycosides and cancer therapy. Oncoimmunology 2014; 2:e23082. [PMID: 23525565 PMCID: PMC3601180 DOI: 10.4161/onci.23082] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cardiac glycosides (CGs) are natural compounds sharing the ability to operate as potent inhibitors of the plasma membrane Na+/K+-ATPase, hence promoting—via an indirect mechanism—the intracellular accumulation of Ca2+ ions. In cardiomyocytes, increased intracellular Ca2+ concentrations exert prominent positive inotropic effects, that is, they increase myocardial contractility. Owing to this feature, two CGs, namely digoxin and digitoxin, have extensively been used in the past for the treatment of several cardiac conditions, including distinct types of arrhythmia as well as contractility disorders. Nowadays, digoxin is approved by the FDA and indicated for the treatment of congestive heart failure, atrial fibrillation and atrial flutter with rapid ventricular response, whereas the use of digitoxin has been discontinued in several Western countries. Recently, CGs have been suggested to exert potent antineoplastic effects, notably as they appear to increase the immunogenicity of dying cancer cells. In this Trial Watch, we summarize the mechanisms that underpin the unsuspected anticancer potential of CGs and discuss the progress of clinical studies that have evaluated/are evaluating the safety and efficacy of CGs for oncological indications.
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Affiliation(s)
- Laurie Menger
- Institut Gustave Roussy; Villejuif, France ; Université Paris-Sud/Paris XI; Le Kremlin-Bicêtre, France ; INSERM; U848; Villejuif, France
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46
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Rocha SC, Pessoa MTC, Neves LDR, Alves SLG, Silva LM, Santos HL, Oliveira SMF, Taranto AG, Comar M, Gomes IV, Santos FV, Paixão N, Quintas LEM, Noël F, Pereira AF, Tessis ACSC, Gomes NLS, Moreira OC, Rincon-Heredia R, Varotti FP, Blanco G, Villar JAFP, Contreras RG, Barbosa LA. 21-Benzylidene digoxin: a proapoptotic cardenolide of cancer cells that up-regulates Na,K-ATPase and epithelial tight junctions. PLoS One 2014; 9:e108776. [PMID: 25290152 PMCID: PMC4188576 DOI: 10.1371/journal.pone.0108776] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 08/25/2014] [Indexed: 02/07/2023] Open
Abstract
Cardiotonic steroids are used to treat heart failure and arrhythmia and have promising anticancer effects. The prototypic cardiotonic steroid ouabain may also be a hormone that modulates epithelial cell adhesion. Cardiotonic steroids consist of a steroid nucleus and a lactone ring, and their biological effects depend on the binding to their receptor, Na,K-ATPase, through which, they inhibit Na+ and K+ ion transport and activate of several intracellular signaling pathways. In this study, we added a styrene group to the lactone ring of the cardiotonic steroid digoxin, to obtain 21-benzylidene digoxin (21-BD), and investigated the effects of this synthetic cardiotonic steroid in different cell models. Molecular modeling indicates that 21-BD binds to its target Na,K-ATPase with low affinity, adopting a different pharmacophoric conformation when bound to its receptor than digoxin. Accordingly, 21-DB, at relatively high µM amounts inhibits the activity of Na,K-ATPase α1, but not α2 and α3 isoforms. In addition, 21-BD targets other proteins outside the Na,K-ATPase, inhibiting the multidrug exporter Pdr5p. When used on whole cells at low µM concentrations, 21-BD produces several effects, including: 1) up-regulation of Na,K-ATPase expression and activity in HeLa and RKO cancer cells, which is not found for digoxin, 2) cell specific changes in cell viability, reducing it in HeLa and RKO cancer cells, but increasing it in normal epithelial MDCK cells, which is different from the response to digoxin, and 3) changes in cell-cell interaction, altering the molecular composition of tight junctions and elevating transepithelial electrical resistance of MDCK monolayers, an effect previously found for ouabain. These results indicate that modification of the lactone ring of digoxin provides new properties to the compound, and shows that the structural change introduced could be used for the design of cardiotonic steroid with novel functions.
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Affiliation(s)
- Sayonarah C. Rocha
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Marco T. C. Pessoa
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Luiza D. R. Neves
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Silmara L. G. Alves
- Laboratório de Síntese Orgânica, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Luciana M. Silva
- Laboratório de Biologia Celular e Inovação Biotecnológica, Fundação Ezequiel Dias, Belo Horizonte, MG, Brazil
| | - Herica L. Santos
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Soraya M. F. Oliveira
- Laboratório de Bioinformática, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Alex G. Taranto
- Laboratório de Bioinformática, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Moacyr Comar
- Laboratório de Bioinformática, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Isabella V. Gomes
- Laboratório de Biologia Celular e Mutagenicidade, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Fabio V. Santos
- Laboratório de Biologia Celular e Mutagenicidade, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Natasha Paixão
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Luis E. M. Quintas
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - François Noël
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Antonio F. Pereira
- Laboratório de Bioquímica Microbiana, Instituto de Microbiologia Paulo Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana C. S. C. Tessis
- Laboratório de Bioquímica Microbiana, Instituto de Microbiologia Paulo Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, Brazil
| | - Natalia L. S. Gomes
- Laboratório de Biologia Molecular e Doenças Endêmicas, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Otacilio C. Moreira
- Laboratório de Biologia Molecular e Doenças Endêmicas, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Ruth Rincon-Heredia
- Department of Physiology, Biophysics and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Fernando P. Varotti
- Laboratório de Bioquímica de Parasitos, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Jose A. F. P. Villar
- Laboratório de Síntese Orgânica, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
| | - Rubén G. Contreras
- Department of Physiology, Biophysics and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Leandro A. Barbosa
- Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindú, Divinópolis, MG, Brazil
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47
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Evaluating the cancer therapeutic potential of cardiac glycosides. BIOMED RESEARCH INTERNATIONAL 2014; 2014:794930. [PMID: 24895612 PMCID: PMC4033509 DOI: 10.1155/2014/794930] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 11/23/2022]
Abstract
Cardiac glycosides, also known as cardiotonic steroids, are a group of natural products that share a steroid-like structure with an unsaturated lactone ring and the ability to induce cardiotonic effects mediated by a selective inhibition of the Na+/K+-ATPase. Cardiac glycosides have been used for many years in the treatment of cardiac congestion and some types of cardiac arrhythmias. Recent data suggest that cardiac glycosides may also be useful in the treatment of cancer. These compounds typically inhibit cancer cell proliferation at nanomolar concentrations, and recent high-throughput screenings of drug libraries have therefore identified cardiac glycosides as potent inhibitors of cancer cell growth. Cardiac glycosides can also block tumor growth in rodent models, which further supports the idea that they have potential for cancer therapy. Evidence also suggests, however, that cardiac glycosides may not inhibit cancer cell proliferation selectively and the potent inhibition of tumor growth induced by cardiac glycosides in mice xenografted with human cancer cells is probably an experimental artifact caused by their ability to selectively kill human cells versus rodent cells. This paper reviews such evidence and discusses experimental approaches that could be used to reveal the cancer therapeutic potential of cardiac glycosides in preclinical studies.
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48
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Eldawud R, Stueckle TA, Manivannan S, Elbaz H, Chen M, Rojanasakul Y, Dinu CZ. Real-time analysis of the effects of toxic, therapeutic and sub-therapeutic concentrations of digitoxin on lung cancer cells. Biosens Bioelectron 2014; 59:192-9. [PMID: 24727605 DOI: 10.1016/j.bios.2014.03.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/09/2014] [Accepted: 03/12/2014] [Indexed: 12/21/2022]
Abstract
Digitoxin belongs to a naturally occurring class of cardiac glycosides (CG); digitoxin is clinically approved for heart failure and known for its anti-cancer effects against non-small lung cancer cells (NSCLC). However, concerns associated with its narrow therapeutic index and its concentration-dependent mechanism of action are rising. Thus, before digitoxin implementation in designing and developing safer and more effective CG-based anti-cancer therapies, its pharmacological and safety profiles need to be fully elucidated. In this research we used a combinatorial approach to evaluate the anti-cancer mechanisms of digitoxin in real-time. Our approach employed a non-invasive electric cell impedance sensing technique as a proxy to monitor NSCLC behavior post-exposure to toxic, therapeutic and sub-therapeutic concentrations of the drug. By developing structure-function combinatorial relations we showed that digitoxin targets cancer cells in a time and dose-dependant manner by activating pro-apoptotic and anti-proliferative signaling cascades that results in strengthening cellular adhesion and sequestration of key regulatory proliferation protein from the nucleus.
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Affiliation(s)
- R Eldawud
- Department of Chemical Engineering, West Virginia University, WV, United States
| | - T A Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, WV, United States; Department of Basic Pharmaceutical Sciences, West Virginia University, WV, United States
| | - S Manivannan
- Department of Chemical Engineering, West Virginia University, WV, United States
| | - H Elbaz
- Wayne State University School of Medicine, MI, United States
| | - M Chen
- Department of Basic Pharmaceutical Sciences, West Virginia University, WV, United States
| | - Y Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, WV, United States; Mary Babb Randolph Cancer Center Allen Lung Program, West Virginia University, WV, United States.
| | - C Z Dinu
- Department of Chemical Engineering, West Virginia University, WV, United States; Department of Basic Pharmaceutical Sciences, West Virginia University, WV, United States; Mary Babb Randolph Cancer Center Allen Lung Program, West Virginia University, WV, United States.
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49
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Cuccarese MF, Singh A, Amiji M, O’Doherty GA. A novel use of gentamicin in the ROS-mediated sensitization of NCI-H460 lung cancer cells to various anticancer agents. ACS Chem Biol 2013; 8:2771-7. [PMID: 24093441 DOI: 10.1021/cb4007024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aminoglycosides are broad-spectrum antibiotics that are used for the treatment of severe Gram-negative and Gram-positive bacterial infections. While bactericidal effects of aminoglycosides are due to binding to the 30S subunit of the bacterial ribosome, aminoglycosides can affect protein synthesis, intracellular calcium levels, and levels of reactive oxygen species (ROS) in eukaryotic cells. While aminoglycosides can be cytotoxic at high concentrations, our results show that at much lower doses, gentamicin can be implemented as a sensitizing agent for the NSCLC cell line NCI-H460, increasing the efficacy of camptothecin, digitoxin, and vinblastine in vitro. We have also established that this sensitization is reliant on the ROS response generated by gentamicin.
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Affiliation(s)
- Michael F. Cuccarese
- Department of Chemistry and Chemical
Biology and ‡Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachussets, United States
| | - Amit Singh
- Department of Chemistry and Chemical
Biology and ‡Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachussets, United States
| | - Mansoor Amiji
- Department of Chemistry and Chemical
Biology and ‡Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachussets, United States
| | - George A. O’Doherty
- Department of Chemistry and Chemical
Biology and ‡Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachussets, United States
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50
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Pongrakhananon V, Stueckle TA, Wang HYL, O'Doherty GA, Dinu CZ, Chanvorachote P, Rojanasakul Y. Monosaccharide digitoxin derivative sensitize human non-small cell lung cancer cells to anoikis through Mcl-1 proteasomal degradation. Biochem Pharmacol 2013; 88:23-35. [PMID: 24231508 DOI: 10.1016/j.bcp.2013.10.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/28/2013] [Accepted: 10/28/2013] [Indexed: 12/18/2022]
Abstract
Advanced stage cancers acquire anoikis resistance which provides metastatic potential to invade and form tumors at distant sites. Suppression of anoikis resistance by novel molecular therapies would greatly benefit treatment strategies for metastatic cancers. Recently, digitoxin and several of its novel synthetic derivatives, such as α-l-rhamnose monosaccharide derivative (D6-MA), have been synthesized and studied for their profound anticancer activity in various cancer cell lines. In this study, we investigated the anoikis sensitizing effect of D6-MA compared with digitoxin to identify their anti-metastatic mechanism of action. D6-MA sensitized NSCLC H460 cells to detachment-induced apoptosis with significantly greater cytotoxicity (IC50=11.9 nM) than digitoxin (IC50=90.7 nM) by activating caspase-9. Screening of the Bcl-2 protein family revealed that degradation of anti-apoptotic Mcl-1 protein is a favorable target. Mcl-1 over-expression and knockdown studies in D6-MA and digitoxin exposed cells resulted in rescue and enhancement, respectively, indicating a facilitative role for decreased Mcl-1 expression in NSCLC anoikis. Transfection with mutant Mcl-1S159 attenuated detachment-induced cell death and correlated with a remaining of Mcl-1 level. Furthermore, D6-MA suppressed Mcl-1 expression via ubiquitin proteasomal degradation that is dependent on activation of glycogen synthase kinase (GSK)-3β signaling. In addition, D6-MA also targeted Mcl-1 degradation causing an increased anoikis in A549 lung cancer cells. Anoikis sensitizing effect on normal small airway epithelial cells was not observed indicating the specificity of D6-MA and digitoxin for NSCLC. These results identify a novel cardiac glycoside (CG) sensitizing anoikis mechanism and provide a promising anti-metastatic target for lung cancer therapy.
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Affiliation(s)
- Varisa Pongrakhananon
- Cell-Based Drug and Health Product Development Research Unit, Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.,Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, United States
| | - Todd A Stueckle
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, United States.,Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Hua-Yu Leo Wang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - George A O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, United States
| | - Cerasela Zoica Dinu
- Department of Chemical Engineering, West Virginia University, Morgantown, WV 26506, United States
| | - Pithi Chanvorachote
- Cell-Based Drug and Health Product Development Research Unit, Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Yon Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, United States.,Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, United States
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