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Li L, Jin M, Tan J, Xiao B. NcRNAs: A synergistically antiapoptosis therapeutic tool in Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14476. [PMID: 37735992 PMCID: PMC11017435 DOI: 10.1111/cns.14476] [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: 07/12/2023] [Revised: 08/22/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
AIMS The aim of this review is to systematically summarize and analyze the noncoding RNAs (ncRNAs), especially microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs), in the cell apoptosis among Alzheimer's disease (AD) in recent years to demonstrate their value in the diagnosis and treatment of AD. METHODS We systematically summarized in vitro and in vivo studies focusing on the ncRNAs in the regulation of cell apoptosis among AD in PubMed, ScienceDirect, and Google Scholar. RESULTS We discover three patterns of ncRNAs (including 'miRNA-mRNA', 'lncRNA-miRNA-mRNA', and 'circRNA-miRNA-mRNA') form the ncRNA-based regulatory networks in regulating cell apoptosis in AD. CONCLUSIONS This review provides a future diagnosis and treatment strategy for AD patients based on ncRNAs.
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Affiliation(s)
- Liangxian Li
- Laboratory of Respiratory DiseaseAffiliated Hospital of Guilin Medical UniversityGuilinChina
- Guangxi Key Laboratory of Brain and Cognitive NeuroscienceGuilin Medical UniversityGuilinChina
| | - Mingyue Jin
- Guangxi Key Laboratory of Brain and Cognitive NeuroscienceGuilin Medical UniversityGuilinChina
| | - Jie Tan
- Guangxi Key Laboratory of Brain and Cognitive NeuroscienceGuilin Medical UniversityGuilinChina
| | - Bo Xiao
- Laboratory of Respiratory DiseaseAffiliated Hospital of Guilin Medical UniversityGuilinChina
- Guangxi Key Laboratory of Brain and Cognitive NeuroscienceGuilin Medical UniversityGuilinChina
- Key Laboratory of Respiratory DiseasesEducation Department of Guangxi Zhuang Autonomous RegionGuilinChina
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2
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Lin Z, Long F, Kang R, Klionsky DJ, Yang M, Tang D. The lipid basis of cell death and autophagy. Autophagy 2024; 20:469-488. [PMID: 37768124 PMCID: PMC10936693 DOI: 10.1080/15548627.2023.2259732] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
ABBREVIATIONS ACSL: acyl-CoA synthetase long chain family; DISC: death-inducing signaling complex; DAMPs: danger/damage-associated molecular patterns; Dtgn: dispersed trans-Golgi network; FAR1: fatty acyl-CoA reductase 1; GPX4: glutathione peroxidase 4; LPCAT3: lysophosphatidylcholine acyltransferase 3; LPS: lipopolysaccharide; MUFAs: monounsaturated fatty acids; MOMP: mitochondrial outer membrane permeabilization; MLKL, mixed lineage kinase domain like pseudokinase; oxPAPC: oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine; OxPCs: oxidized phosphatidylcholines; PUFAs: polyunsaturated fatty acids; POR: cytochrome p450 oxidoreductase; PUFAs: polyunsaturated fatty acids; RCD: regulated cell death; RIPK1: receptor interacting serine/threonine kinase 1; SPHK1: sphingosine kinase 1; SOAT1: sterol O-acyltransferase 1; SCP2: sterol carrier protein 2; SFAs: saturated fatty acids; SLC47A1: solute carrier family 47 member 1; SCD: stearoyl-CoA desaturase; VLCFA: very long chain fatty acids.
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Affiliation(s)
- Zhi Lin
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Clinical Research Center of Pediatric Cancer, Changsha, Hunan, China
| | - Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Postdoctoral Research Station of Basic Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
| | - Daniel J. Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Minghua Yang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Clinical Research Center of Pediatric Cancer, Changsha, Hunan, China
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, USA
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3
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Chen W, Yang C, Chen B, Xi M, Chen B, Li Q. Management of metastatic bone disease of melanoma. Melanoma Res 2024; 34:22-30. [PMID: 37939058 DOI: 10.1097/cmr.0000000000000937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
One of the most aggressive tumors arising from the skin, mucosa, and uvea is malignant melanoma, which easily metastasizes. Bone tissue is one of the most typical locations for distant metastasis, and around 5%-20% of patients eventually acquired skeletal metastases. For decades, the incidence of bone metastases was higher, bringing greater burden on the family, society, and healthcare system owing to the progress of targeted therapy and immunotherapy, which prolonging the survival time substantially. Moreover, bone metastases result in skeletal-related events, which influence the quality of life, obviously. Appropriate intervention is therefore crucial. To obtain the optimum cost-effectiveness, existing treatment algorithm must be integrated, which is still controversial. We have aimed to throw light on current views concerning the formation, biological and clinical features, and treatment protocol of melanoma bone metastases to guide the decision-making process.
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Affiliation(s)
- Wenyan Chen
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
| | - Chen Yang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
| | - Biqi Chen
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
| | - Mian Xi
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
| | - Baoqing Chen
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
| | - Qiaoqiao Li
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine
- Guangdong Esophageal Cancer Research Institute
- Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, P. R. China
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4
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Cai H, Lv M, Wang T. PANoptosis in cancer, the triangle of cell death. Cancer Med 2023; 12:22206-22223. [PMID: 38069556 PMCID: PMC10757109 DOI: 10.1002/cam4.6803] [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: 08/17/2023] [Revised: 11/08/2023] [Accepted: 11/27/2023] [Indexed: 12/31/2023] Open
Abstract
BACKGROUND PANoptosis is a novel form of programmed cell death (PCD) found in 2019 that is regulated by the PANoptosome. PANoptosis combines essential features of pyroptosis, apoptosis, and necroptosis, forming a "death triangle" of cells. While apoptosis, pyroptosis, and necroptosis have been extensively studied for their roles in human inflammatory diseases and many other clinical conditions, historically they were considered as independent processes. However, emerging evidence indicates that these PCDs exhibit cross talk and interactions, resulting in the development of the concept of PANoptosis. METHODS In this review, we offer a concise summary of the fundamental mechanisms of apoptosis, pyroptosis, and necroptosis. We subsequently introduce the notion of PANoptosis and detail the assembly mechanism of the PANoptosome complex which is responsible for inducing cell death. We also describe some regulatory networks of PANoptosis. RESULTS PANoptosis now has been associated with various human diseases including cancer. Although the exact function of PANoptosis in each tumor is not fully understood, it represents a prospective avenue for cancer therapy, offering promise for advancements in cancer therapy. CONCLUSIONS In the future, in-depth study of PANoptosis will continue to help us in understanding the fundamental processes underlying cell death and provide scientific support for cancer research.
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Affiliation(s)
- Hantao Cai
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Mingming Lv
- Department of Breast, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Tingting Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
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5
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Woo S, Gandhi S, Ghincea A, Saber T, Lee CJ, Ryu C. Targeting the NLRP3 inflammasome and associated cytokines in scleroderma associated interstitial lung disease. Front Cell Dev Biol 2023; 11:1254904. [PMID: 37849737 PMCID: PMC10577231 DOI: 10.3389/fcell.2023.1254904] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/19/2023] [Indexed: 10/19/2023] Open
Abstract
SSc-ILD (scleroderma associated interstitial lung disease) is a complex rheumatic disease characterized in part by immune dysregulation leading to the progressive fibrotic replacement of normal lung architecture. Because improved treatment options are sorely needed, additional study of the fibroproliferative mechanisms mediating this disease has the potential to accelerate development of novel therapies. The contribution of innate immunity is an emerging area of investigation in SSc-ILD as recent work has demonstrated the mechanistic and clinical significance of the NLRP3 inflammasome and its associated cytokines of TNFα (tumor necrosis factor alpha), IL-1β (interleukin-1 beta), and IL-18 in this disease. In this review, we will highlight novel pathophysiologic insights afforded by these studies and the potential of leveraging this complex biology for clinical benefit.
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Affiliation(s)
| | | | | | | | | | - Changwan Ryu
- Department of Internal Medicine, Yale School of Medicine, Section of Pulmonary, Critical Care and Sleep Medicine, New Haven, CT, United States
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6
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Kowalski S, Karska J, Łapińska Z, Hetnał B, Saczko J, Kulbacka J. An overview of programmed cell death: Apoptosis and pyroptosis-Mechanisms, differences, and significance in organism physiology and pathophysiology. J Cell Biochem 2023. [PMID: 37269535 DOI: 10.1002/jcb.30413] [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: 02/13/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 06/05/2023]
Abstract
Regulated cell death is an essential and heterogeneous process occurring in the life cycle of organisms, from embryonic development and aging to the regulation of homeostasis and organ maintenance. Under this term, we can distinguish many distinct pathways, including apoptosis and pyroptosis. Recently, there has been an increasing comprehension of the mechanisms governing these phenomena and their characteristic features. The coexistence of different types of cell death and the differences and similarities between them has been the subject of many studies. This review aims to present the latest literature in the field of pyroptosis and apoptosis and compare their molecular pathway's elements and significance in the physiology and pathophysiology of the organism.
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Affiliation(s)
- Szymon Kowalski
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Julia Karska
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Zofia Łapińska
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Bartosz Hetnał
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Jolanta Saczko
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
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7
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Giacomini C, Granéli C, Hicks R, Dazzi F. The critical role of apoptosis in mesenchymal stromal cell therapeutics and implications in homeostasis and normal tissue repair. Cell Mol Immunol 2023; 20:570-582. [PMID: 37185486 DOI: 10.1038/s41423-023-01018-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/30/2023] [Indexed: 05/17/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) have been extensively tested for the treatment of numerous clinical conditions and have demonstrated good safety but mixed efficacy. Although this outcome can be attributed in part to the heterogeneity of cell preparations, the lack of mechanistic understanding and tools to establish cell pharmacokinetics and pharmacodynamics, as well as the poorly defined criteria for patient stratification, have hampered the design of informative clinical trials. We and others have demonstrated that MSCs can rapidly undergo apoptosis after their infusion. Apoptotic MSCs are phagocytosed by monocytes/macrophages that are then reprogrammed to become anti-inflammatory cells. MSC apoptosis occurs when the cells are injected into patients who harbor activated cytotoxic T or NK cells. Therefore, the activation state of cytotoxic T or NK cells can be used as a biomarker to predict clinical responses to MSC treatment. Building on a large body of preexisting data, an alternative view on the mechanism of MSCs is that an inflammation-dependent MSC secretome is largely responsible for their immunomodulatory activity. We will discuss how these different mechanisms can coexist and are instructed by two different types of MSC "licensing": one that is cell-contact dependent and the second that is mediated by inflammatory cytokines. The varied and complex mechanisms by which MSCs can orchestrate inflammatory responses and how this function is specifically driven by inflammation support a physiological role for tissue stroma in tissue homeostasis, and it acts as a sensor of damage and initiator of tissue repair by reprogramming the inflammatory environment.
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Affiliation(s)
- Chiara Giacomini
- School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK.
| | - Cecilia Granéli
- BioPharmaceuticals R&D Cell Therapy Department, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Ryan Hicks
- School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK
- BioPharmaceuticals R&D Cell Therapy Department, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Francesco Dazzi
- School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK.
- BioPharmaceuticals R&D Cell Therapy Department, Research and Early Development, Cardiovascular, Renal, and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
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8
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The Normal, the Radiosensitive, and the Ataxic in the Era of Precision Radiotherapy: A Narrative Review. Cancers (Basel) 2022; 14:cancers14246252. [PMID: 36551737 PMCID: PMC9776433 DOI: 10.3390/cancers14246252] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
(1) Background: radiotherapy is a cornerstone of cancer treatment. When delivering a tumoricidal dose, the risk of severe late toxicities is usually kept below 5% using dose-volume constraints. However, individual radiation sensitivity (iRS) is responsible (with other technical factors) for unexpected toxicities after exposure to a dose that induces no toxicity in the general population. Diagnosing iRS before radiotherapy could avoid unnecessary toxicities in patients with a grossly normal phenotype. Thus, we reviewed iRS diagnostic data and their impact on decision-making processes and the RT workflow; (2) Methods: following a description of radiation toxicities, we conducted a critical review of the current state of the knowledge on individual determinants of cellular/tissue radiation; (3) Results: tremendous advances in technology now allow minimally-invasive genomic, epigenetic and functional testing and a better understanding of iRS. Ongoing large translational studies implement various tests and enriched NTCP models designed to improve the prediction of toxicities. iRS testing could better support informed radiotherapy decisions for individuals with a normal phenotype who experience unusual toxicities. Ethics of medical decisions with an accurate prediction of personalized radiotherapy's risk/benefits and its health economics impact are at stake; (4) Conclusions: iRS testing represents a critical unmet need to design personalized radiotherapy protocols relying on extended NTCP models integrating iRS.
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9
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Ilimaquinone (Marine Sponge Metabolite) Induces Apoptosis in HCT-116 Human Colorectal Carcinoma Cells via Mitochondrial-Mediated Apoptosis Pathway. Mar Drugs 2022; 20:md20090582. [PMID: 36135771 PMCID: PMC9503335 DOI: 10.3390/md20090582] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/03/2022] [Accepted: 09/15/2022] [Indexed: 12/05/2022] Open
Abstract
Ilimaquinone (IQ), a metabolite found in marine sponges, has been reported to have a number of biological properties, including potential anticancer activity against colon cancer. However, no clear understanding of the precise mechanism involved is known. The aim of this study was to examine the molecular mechanism by which IQ acts on HCT-116 cells. The anticancer activity of IQ was investigated by means of a cell viability assay followed by the determination of induction of apoptosis by means of the use of acridine orange–ethidium bromide (AO/EB) staining, Annexin V/PI double staining, DNA fragmentation assays, and TUNEL assays. The mitochondrial membrane potential (ΔΨm) was detected using the JC-1 staining technique, and the apoptosis-associated proteins were analyzed using real-time qRT-PCR. A molecular docking study of IQ with apoptosis-associated proteins was also conducted in order to assess the interaction between IQ and them. Our results suggest that IQ significantly suppressed the viability of HCT-116 cells in a dose-dependent manner. Fluorescent microscopy, flow cytometry, DNA fragmentation and the TUNEL assay in treated cells demonstrated apoptotic death mode. As an additional confirmation of apoptosis, the increased level of caspase-3 and caspase-9 expression and the downregulation of Bcl-2 and mitochondrial dysfunction were observed in HCT-116 cells after treatment with IQ, which was accompanied by a decrease in mitochondrial membrane potential (ΔΨm). Overall, the results of our studies demonstrate that IQ could trigger mitochondria-mediated apoptosis as demonstrated by a decrease in ΔΨm, activation of caspase-9/-3, damage of DNA and a decrease in the proportion of Bcl-2 through the mitochondrial-mediated apoptosis pathway.
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10
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Khan MI, Karima G, Khan MZ, Shin JH, Kim JD. Therapeutic Effects of Saponins for the Prevention and Treatment of Cancer by Ameliorating Inflammation and Angiogenesis and Inducing Antioxidant and Apoptotic Effects in Human Cells. Int J Mol Sci 2022; 23:10665. [PMID: 36142578 PMCID: PMC9504392 DOI: 10.3390/ijms231810665] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Saponins are natural compounds found in plants and have a diverse range of applications. However, the therapeutic potential of saponins in regulating cytotoxicity, angiogenesis, and inflammation in mammalian cells is yet to be explored. Here, we investigated the therapeutic effects of saponins from green tea by exploring the cytotoxic effects of saponins by inducing apoptosis in the human cancer cell lines hepatocellular carcinoma (HEPG2) and colorectal adenocarcinoma (HT29). The anti-angiogenesis effect of saponins was also investigated in human umbilical vein endothelial cells (HUVEC). We explored the ability of saponins to attenuate inflammation in a dose-dependent manner in normal human cells. It was found that saponins exhibit cytotoxic effects in cancer cells and not in normal cells at the same concentration. Cytotoxicity was measured by inducing apoptosis by enhancing caspase-3 (cas-3) activation and B-cell lymphoma-2 (Bcl-2)-associated X protein (BAX) gene expression and suppressing the antiapoptotic protein, Bcl-2. The inhibition of HUVEC proliferation was due to the suppression of the phosphoinositide 3-kinase (PI3K), protein kinase B (AKT), vascular endothelial growth factor receptor-2 (VEGFR-2), and nuclear factor kappa B (NF-κB). We also observed the antioxidant potential of green tea-derived saponins against free radicals in reactive oxygen species (ROS)-induced cells. Here we observed that the saponins exhibited free radical scavenging activities and activated nuclear factorerythroid 2-related factor 2 (NRF-2) leading to the upregulation of antioxidant-related genes in human embryonic kidney 293 (HEK293) cells. Furthermore, we demonstrated that the anti-inflammatory effects were due to the suppression of pro-inflammatory cytokines interleukin (IL)-1β, IL-6, tumor necrosis factor-alpha (TNF-α), and inducible nitric oxide synthase (iNOS) in HEK293 cells. The significance of the work is we are the first to report on the anti-cancer effects of saponins based on the anti-inflammatory, antioxidant, anti-angiogenesis, and apoptosis induction properties. In conclusion, green tea-derived saponins could be effective therapeutics for the treatment of cancer.
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Affiliation(s)
- Muhammad Imran Khan
- Department of Biotechnology, Faculty of Biomedical and Life Sciences, Kohsar University, Murree 47150, Pakistan
| | - Gul Karima
- Department of Bionanotechnology, Graduate School, Hanyang University, Seoul 04763, Korea
| | | | - Jin Hyuk Shin
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea
| | - Jong Deog Kim
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea
- Research Center on Anti-Obesity and Health Care, Chonnam National University, Yeosu 59626, Korea
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11
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Lyu Q, Feng M, Wang L, Yang J, Wu G, Liu M, Feng Y, Lin S, Yang Q, Hu J. Taurine Prevents Liver Injury by Reducing Oxidative Stress and Cytochrome C-Mediated Apoptosis in Broilers Under Low Temperature. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1370:145-152. [DOI: 10.1007/978-3-030-93337-1_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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12
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Molyer B, Kumar A, Angel JB. SMAC Mimetics as Therapeutic Agents in HIV Infection. Front Immunol 2021; 12:780400. [PMID: 34899741 PMCID: PMC8660680 DOI: 10.3389/fimmu.2021.780400] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
Although combination antiretroviral therapy is extremely effective in lowering HIV RNA to undetectable levels in the blood, HIV persists in latently infected CD4+ T-cells and persistently infected macrophages. In latently/persistently infected cells, HIV proteins have shown to affect the expression of proteins involved in the apoptosis pathway, notably the inhibitors of apoptosis proteins (IAPs), and thereby influence cell survival. IAPs, which are inhibited by endogenous second mitochondrial-derived activators of caspases (SMAC), can serve as targets for SMAC mimetics, synthetic compounds capable of inducing apoptosis. There is increasing evidence that SMAC mimetics can be used to reverse HIV latency and/or kill cells that are latently/persistently infected with HIV. Here, we review the current state of knowledge of SMAC mimetics as an approach to eliminate HIV infected cells and discuss the potential future use of SMAC mimetics as part of an HIV cure strategy.
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Affiliation(s)
- Bengisu Molyer
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Ashok Kumar
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.,Apoptosis Research Center of Children's Hospital of Eastern Ontario, Department of Microbiology and Immunology, University of Ottawa, Ottawa, Canada
| | - Jonathan B Angel
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.,Division of Infectious Diseases, Ottawa Hospital, Ottawa, ON, Canada
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13
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Kameyanda Poonacha S, Harishkumar M, Radha M, Varadarajan R, Nalilu SK, Shetty SS, Shetty PK, Chandrashekharappa RB, Sreenivas MG, Bhandary Bavabeedu SK. Insight into OroxylinA-7- O-β-d-Glucuronide-Enriched Oroxylum indicum Bark Extract in Oral Cancer HSC-3 Cell Apoptotic Mechanism: Role of Mitochondrial Microenvironment. Molecules 2021; 26:7430. [PMID: 34946511 PMCID: PMC8704017 DOI: 10.3390/molecules26247430] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 02/08/2023] Open
Abstract
Oroxylum indicum, of the Bignoniaceae family, has various ethnomedical uses such as an astringent, anti-inflammatory, anti-bronchitis, anti-helminthic and anti-microbial, including anticancer properties. The druggability of OI stem bark extract was determined by its molecular docking interactions with PARP and Caspase-3, two proteins involved in cell survival and death. Note that 50 µg/mL of Oroxylum indicum extract (OIE) showed a significant (p < 0.05%) toxicity to HSC-3 cells. MTT aided cell viability and proliferation assay demonstrated that 50 µg/mL of OIE displayed significant (p < 0.5%) reduction in cell number at 4 h of incubation time. Cell elongation and spindle formation was noticed when HSC-3 cells were treated with 50 µg/mL of OIE. OIE initiated DNA breakage and apoptosis in HSC-3 cells, as evident from DNA ladder assay and calcein/EB staining. Apoptosis potential of OIE is confirmed by flow cytometer and triple-staining (live cell/apoptosis/necrosis) assay. Caspase-3/7 fluorescence quenching (LANCE) assay demonstrated that 50 µg/mL of OIE significantly enhanced the RFU of caspases-3/7, indicating that the apoptosis potential of OIE is probably through the activation of caspases. Immuno-cytochemistry of HSC-3 cells treated with 50 µg/mL of OIE showed a significant reduction in mitochondrial bodies as well as a reduction in RFU in 60 min of incubation time. Immunoblotting studies clearly showed that treatment of HSC-3 cells with OI extract caused caspase-3 activation and PARP deactivation, resulting in apoptotic cell death. Overall, our data indicate that OIE is an effective apoptotic agent for human squamous carcinoma cells and it could be a future cancer chemotherapeutic target.
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Affiliation(s)
- Sharmila Kameyanda Poonacha
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
| | - Madhyastha Harishkumar
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
- Department of Cardio-Vascular Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan;
| | - Madhyastha Radha
- Department of Cardio-Vascular Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan;
| | - Remya Varadarajan
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
| | - Suchetha Kumari Nalilu
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
- Department of Biochemistry, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India
| | - Shilpa Sharathraj Shetty
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
| | - Praveen Kumar Shetty
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
- Department of Biochemistry, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India
| | | | - Mahendra Gowdru Sreenivas
- Department of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to Be) University, Mangaluru 575018, India; (R.B.C.); (M.G.S.)
| | - Satheesh Kumar Bhandary Bavabeedu
- Central Research Laboratory, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India; (S.K.P.); (R.V.); (S.K.N.); (S.S.S.); (P.K.S.)
- Department of Otorhinolarynology, K.S. Hegde Medical Academy, Nitte (Deemed to Be) University, Mangaluru 575018, India
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14
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Apoptosis, Pyroptosis, and Necroptosis-Oh My! The Many Ways a Cell Can Die. J Mol Biol 2021; 434:167378. [PMID: 34838807 DOI: 10.1016/j.jmb.2021.167378] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/12/2021] [Accepted: 11/21/2021] [Indexed: 12/12/2022]
Abstract
Cell death is an essential process in all living organisms and occurs through different mechanisms. The three main types of programmed cell death are apoptosis, pyroptosis, and necroptosis, and each of these pathways employs complex molecular and cellular mechanisms. Although there are mechanisms and outcomes specific to each pathway, they share common components and features. In this review, we discuss recent discoveries in these three best understood modes of cell death, highlighting their singularities, and examining the intriguing notion that common players shape different individual pathways in this highly interconnected and coordinated cell death system. Understanding the similarities and differences of these cell death processes is crucial to enable targeted strategies to manipulate these pathways for therapeutic benefit.
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15
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Over Fifty Years of Life, Death, and Cannibalism: A Historical Recollection of Apoptosis and Autophagy. Int J Mol Sci 2021; 22:ijms222212466. [PMID: 34830349 PMCID: PMC8618802 DOI: 10.3390/ijms222212466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 01/18/2023] Open
Abstract
Research in biomedical sciences has changed dramatically over the past fifty years. There is no doubt that the discovery of apoptosis and autophagy as two highly synchronized and regulated mechanisms in cellular homeostasis are among the most important discoveries in these decades. Along with the advancement in molecular biology, identifying the genetic players in apoptosis and autophagy has shed light on our understanding of their function in physiological and pathological conditions. In this review, we first describe the history of key discoveries in apoptosis with a molecular insight and continue with apoptosis pathways and their regulation. We touch upon the role of apoptosis in human health and its malfunction in several diseases. We discuss the path to the morphological and molecular discovery of autophagy. Moreover, we dive deep into the precise regulation of autophagy and recent findings from basic research to clinical applications of autophagy modulation in human health and illnesses and the available therapies for many diseases caused by impaired autophagy. We conclude with the exciting crosstalk between apoptosis and autophagy, from the early discoveries to recent findings.
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16
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The HSP70 chaperone as sensor of the NEDD8 cycle upon DNA damage. Biochem Soc Trans 2021; 49:1075-1083. [PMID: 34156462 DOI: 10.1042/bst20200381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 11/17/2022]
Abstract
Molecular chaperones are essential components of the protein quality control system and maintenance of homeostasis. Heat Shock Protein 70 (HSP70), a highly evolutionarily conserved family of chaperones is a key regulator of protein folding, oligomerisation and prevents the aggregation of misfolded proteins. HSP70 chaperone function depends on the so-called 'HSP70-cycle', where HSP70 interacts with and is released from substrates via ATP hydrolysis and the assistance of HSP70 co-factors/co-chaperones, which also provide substrate specificity. The identification of regulatory modules for HSP70 allows the elucidation of HSP70 specificity and target selectivity. Here, we discuss how the HSP70 cycle is functionally linked with the cycle of the Ubiquitin-like molecule NEDD8. Using as an example the DNA damage response, we present a model where HSP70 acts as a sensor of the NEDD8 cycle. The NEDD8 cycle acts as a regulatory module of HSP70 activity, where conversion of poly-NEDD8 chains into mono-NEDD8 upon DNA damage activates HSP70, facilitating the formation of the apoptosome and apoptosis execution.
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Bertheloot D, Latz E, Franklin BS. Necroptosis, pyroptosis and apoptosis: an intricate game of cell death. Cell Mol Immunol 2021; 18:1106-1121. [PMID: 33785842 PMCID: PMC8008022 DOI: 10.1038/s41423-020-00630-3] [Citation(s) in RCA: 776] [Impact Index Per Article: 258.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/15/2020] [Indexed: 02/01/2023] Open
Abstract
Cell death is a fundamental physiological process in all living organisms. Its roles extend from embryonic development, organ maintenance, and aging to the coordination of immune responses and autoimmunity. In recent years, our understanding of the mechanisms orchestrating cellular death and its consequences on immunity and homeostasis has increased substantially. Different modalities of what has become known as 'programmed cell death' have been described, and some key players in these processes have been identified. We have learned more about the intricacies that fine tune the activity of common players and ultimately shape the different types of cell death. These studies have highlighted the complex mechanisms tipping the balance between different cell fates. Here, we summarize the latest discoveries in the three most well understood modalities of cell death, namely, apoptosis, necroptosis, and pyroptosis, highlighting common and unique pathways and their effect on the surrounding cells and the organism as a whole.
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Affiliation(s)
- Damien Bertheloot
- Institute of Innate Immunity, University Hospitals Bonn, University of Bonn, Bonn, NRW, Germany.
| | - Eicke Latz
- Institute of Innate Immunity, University Hospitals Bonn, University of Bonn, Bonn, NRW, Germany
- Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
- German Center for Neurodegenerative Diseases, Bonn, NRW, Germany
| | - Bernardo S Franklin
- Institute of Innate Immunity, University Hospitals Bonn, University of Bonn, Bonn, NRW, Germany.
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18
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Missiakas D, Winstel V. Selective Host Cell Death by Staphylococcus aureus: A Strategy for Bacterial Persistence. Front Immunol 2021; 11:621733. [PMID: 33552085 PMCID: PMC7859115 DOI: 10.3389/fimmu.2020.621733] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022] Open
Abstract
Host cell death programs are fundamental processes that shape cellular homeostasis, embryonic development, and tissue regeneration. Death signaling and downstream host cell responses are not only critical to guide mammalian development, they often act as terminal responses to invading pathogens. Here, we briefly review and contrast how invading pathogens and specifically Staphylococcus aureus manipulate apoptotic, necroptotic, and pyroptotic cell death modes to establish infection. Rather than invading host cells, S. aureus subverts these cells to produce diffusible molecules that cause death of neighboring hematopoietic cells and thus shapes an immune environment conducive to persistence. The exploitation of cell death pathways by S. aureus is yet another virulence strategy that must be juxtaposed to mechanisms of immune evasion, autophagy escape, and tolerance to intracellular killing, and brings us closer to the true portrait of this pathogen for the design of effective therapeutics and intervention strategies.
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Affiliation(s)
- Dominique Missiakas
- Howard Taylor Ricketts Laboratory, Department of Microbiology, University of Chicago, Lemont, IL, United States
| | - Volker Winstel
- Research Group Pathogenesis of Bacterial Infections, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
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19
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Wijaya DA, Louisa M, Wibowo H, Taslim A, Permata TBM, Handoko H, Nuryadi E, Kodrat H, Gondhowiardjo SA. The future potential of Annona muricata L. extract and its bioactive compounds as radiation sensitizing agent: proposed mechanisms based on a systematic review. JOURNAL OF HERBMED PHARMACOLOGY 2021. [DOI: 10.34172/jhp.2021.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Despite technological advances in cancer treatment, especially in radiotherapy, many efforts are being made in improving cancer cell radio-sensitivity to increase therapeutic ratio and overcome cancer cell radio-resistance. In the present review, we evaluated the anticancer mechanism of Annona muricata L. (AM) leaves extract and its bioactive compounds such as annonaceous acetogenins, annomuricin, annonacin, or curcumin; and further correlated them with the potential of the mechanism to increase or to reduce cancer cells radio-sensitivity based on literature investigation. We see that AM has a promising future potential as a radio-sensitizer agent.
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Affiliation(s)
- David Andi Wijaya
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Melva Louisa
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Heri Wibowo
- Laboratorium Terpadu, Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Aslim Taslim
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Tiara Bunga Mayang Permata
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Handoko Handoko
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Endang Nuryadi
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Henry Kodrat
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
| | - Soehartati Argadikoesoema Gondhowiardjo
- Department of Radiation Oncology, Dr. Cipto Mangunkusumo National General Hospital - Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, Jakarta, Indonesia
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20
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The multiple biological roles of the cholinesterases. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2020; 162:41-56. [PMID: 33307019 DOI: 10.1016/j.pbiomolbio.2020.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 12/14/2022]
Abstract
It is tacitly assumed that the biological role of acetylcholinesterase is termination of synaptic transmission at cholinergic synapses. However, together with its structural homolog, butyrylcholinesterase, it is widely distributed both within and outside the nervous system, and, in many cases, the role of both enzymes remains obscure. The transient appearance of the cholinesterases in embryonic tissues is especially enigmatic. The two enzymes' extra-synaptic roles, which are known as 'non-classical' roles, are the topic of this review. Strong evidence has been presented that AChE and BChE play morphogenetic roles in a variety of eukaryotic systems, and they do so either by acting as adhesion proteins, or as trophic factors. As trophic factors, one mode of action is to directly regulate morphogenesis, such as neurite outgrowth, by poorly understood mechanisms. The other mode is by regulating levels of acetylcholine, which acts as the direct trophic factor. Alternate substrates have been sought for the cholinesterases. Quite recently, it was shown that levels of the aggression hormone, ghrelin, which also controls appetite, are regulated by butyrylcholinesterase. The rapid hydrolysis of acetylcholine by acetylcholinesterase generates high local proton concentrations. The possible biophysical and biological consequences of this effect are discussed. The biological significance of the acetylcholinesterases secreted by parasitic nematodes is reviewed, and, finally, the involvement of acetylcholinesterase in apoptosis is considered.
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21
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Bailly AP, Perrin A, Serrano-Macia M, Maghames C, Leidecker O, Trauchessec H, Martinez-Chantar ML, Gartner A, Xirodimas DP. The Balance between Mono- and NEDD8-Chains Controlled by NEDP1 upon DNA Damage Is a Regulatory Module of the HSP70 ATPase Activity. Cell Rep 2020; 29:212-224.e8. [PMID: 31577950 PMCID: PMC6899524 DOI: 10.1016/j.celrep.2019.08.070] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/27/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022] Open
Abstract
Ubiquitin and ubiquitin-like chains are finely balanced by conjugating and de-conjugating enzymes. Alterations in this balance trigger the response to stress conditions and are often observed in pathologies. How such changes are detected is not well understood. We identify the HSP70 chaperone as a sensor of changes in the balance between mono- and poly-NEDDylation. Upon DNA damage, the induction of the de-NEDDylating enzyme NEDP1 restricts the formation of NEDD8 chains, mainly through lysines K11/K48. This promotes APAF1 oligomerization and apoptosis induction, a step that requires the HSP70 ATPase activity. HSP70 binds to NEDD8, and, in vitro, the conversion of NEDD8 chains into mono-NEDD8 stimulates HSP70 ATPase activity. This effect is independent of NEDD8 conjugation onto substrates. The study indicates that the NEDD8 cycle is a regulatory module of HSP70 function. These findings may be important in tumorigenesis, as we find decreased NEDP1 levels in hepatocellular carcinoma with concomitant accumulation of NEDD8 conjugates. Restriction of NEDD8 chains by NEDP1 is required for DNA damage-induced apoptosis The HSP70 chaperone is a sensor of the balance between mono- and NEDD8 chains Mono-NEDD8 stimulates HSP70 activity, which allows the formation of the apoptosome NEDP1 levels are downregulated in mouse hepatocellular carcinoma
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Affiliation(s)
- Aymeric P Bailly
- CRBM, CNRS, Univ. Montpellier, UMR5237, Montpellier 34090, Cedex 5, France.
| | - Aurelien Perrin
- CRBM, CNRS, Univ. Montpellier, UMR5237, Montpellier 34090, Cedex 5, France
| | - Marina Serrano-Macia
- Liver Disease Laboratory, CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 48160 Derio, Bizkaia, Spain
| | - Chantal Maghames
- CRBM, CNRS, Univ. Montpellier, UMR5237, Montpellier 34090, Cedex 5, France
| | - Orsolya Leidecker
- CRBM, CNRS, Univ. Montpellier, UMR5237, Montpellier 34090, Cedex 5, France
| | - Helene Trauchessec
- CRBM, CNRS, Univ. Montpellier, UMR5237, Montpellier 34090, Cedex 5, France
| | - M L Martinez-Chantar
- Liver Disease Laboratory, CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), 48160 Derio, Bizkaia, Spain
| | - Anton Gartner
- Centre for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK
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22
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Handa K, Jindal R. Genotoxicity induced by hexavalent chromium leading to eryptosis in Ctenopharyngodon idellus. CHEMOSPHERE 2020; 247:125967. [PMID: 32069732 DOI: 10.1016/j.chemosphere.2020.125967] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/02/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
The initiation of eryptosis as a result of genotoxic action of Cr(VI), seen through micronucleus and comet assay in the peripheral erythrocytes of Ctenopharyngodon idellus was evaluated through RT-qPCR. For this, fish was exposed to sublethal concentration of hexavalent chromium (5.30 and 10.63 mg/L), and the blood was sampled on different endpoints (15, 30 and 45 days). Accumulation of chromium in the erythrocytes was also studied, which depicted a significant increase in toxicant concentration and time dependent manner. Both concentrations of hexavalent chromium induced DNA damage, visible in the form of comet tails. The presence of micronuclei in the erythrocytes was accompanied with occurrence of nuclear bud (NBu), lobed nucleus (Lb), notched nucleus (Nt), vacuolated nucleus (Vn), binucleated cell (Bn) as nuclear abnormalities; and acanthocytes (Ac), echinocytes (Ec), notched cells (Nc), microcytes (Mc) and vacuolated cytoplasm (Vc) as cytoplasmic abnormalities. The expression of genes related to intrinsic apoptotic pathway induced by Cr(VI) presented significant (p < 0.05) upregulation in the expression of p53, Bax, Apaf-1, caspase9 and caspase3, and downregulation of Bcl2; inferring the initiation of apoptotic pathway. The ration of Bax and Bcl2 also appended the apoptotic state of the erythrocytes. From the present investigation, it can be concluded that genotoxicity induced by hexavalent chromium lead to eryptosis in C. idellus.
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Affiliation(s)
- Kriti Handa
- Aquatic Biology Laboratory, Department of Zoology, Panjab University, Chandigarh, 160014, India.
| | - Rajinder Jindal
- Aquatic Biology Laboratory, Department of Zoology, Panjab University, Chandigarh, 160014, India.
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23
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Li Y, Shen F, Bao Y, Chen D, Lu H. Apoptotic effects of rhein through the mitochondrial pathways, two death receptor pathways, and reducing autophagy in human liver L02 cells. ENVIRONMENTAL TOXICOLOGY 2019; 34:1292-1302. [PMID: 31436023 DOI: 10.1002/tox.22830] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 07/22/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Rhein (4,5-dihydroxyanthraquinone-2-carboxylic acid) is a major component of many medicinal herbs such as Rheum palmatum L. and Polygonum multiflorum. Despite being widely used, intoxication cases associated with rhein-containing herbs are often reported. Currently, there are no available reports addressing the effects of rhein on apoptosis in human liver L02 cells. Thus, the aim of this study is to determine the cytotoxic effects and the underlying mechanism of rhein on human normal liver L02 cells. In the present study, the methyl thiazolyl tetrazolium assay demonstrated that rhein decreased the viability of L02 cells in dose-dependent and time-dependent ways. Rhein was found to trigger apoptosis in L02 cells as shown by Annexin V-fluoresceine isothiocyanate (FITC) apoptosis detection kit and cell mitochondrial membrane potential (MMP) assay, with nuclear morphological changes demonstrated by Hoechst 33258 staining. Detection of intracellular superoxide dismutase activity, lipid oxidation (malondialdehyde) content, and reactive oxygen species (ROS) levels showed that apoptosis was associated with oxidative stress. Moreover, it was observed that the mechanism implicated in rhein-induced apoptosis was presumably via the death receptor pathway and the mitochondrial pathway, as illustrated by upregulation of TNF-α, TNFR1, TRADD, and cleaved caspase-3, and downregulation of procaspase-8, and it is suggested that rhein may increase hepatocyte apoptosis by activating the increase of TNF-α level. Meanwhile, rhein upregulates the expression of Bax and downregulates the expression of procaspase-9 and -3, and it is suggested that the mitochondrial pathway is activated and rhein-induced apoptosis may be involved. In addition, we also want to explore whether rhein-induced apoptosis is related to the autophagic changes induced by rhein. The results showed that rhein treatment increased P62 and decreased LC3-II and beclin-1, which means that autophagy was weakened. The results of our studies indicated that rhein induced caspase-dependent apoptosis via both the Fas death pathway and the mitochondrial pathway by generating ROS, and meanwhile the autophagy tended to weaken.
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Affiliation(s)
- Yanglei Li
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fang Shen
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yiqi Bao
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Dongming Chen
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hong Lu
- Department of Pharmacology, Zhejiang Chinese Medical University, Hangzhou, China
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24
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Luo L, Ran R, Yao J, Zhang F, Xing M, Jin M, Wang L, Zhang T. Se-Enriched Cordyceps militaris Inhibits Cell Proliferation, Induces Cell Apoptosis, And Causes G2/M Phase Arrest In Human Non-Small Cell Lung Cancer Cells. Onco Targets Ther 2019; 12:8751-8763. [PMID: 31749621 PMCID: PMC6817841 DOI: 10.2147/ott.s217017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/20/2019] [Indexed: 12/28/2022] Open
Abstract
Background The anticancer effects of cordyceps on various tumors have been reported. However, little is known about the role of selenium (Se)-enriched Cordyceps militaris in non-small cell lung cancer (NSCLC). In this study, the effects of Se-enriched Cordyceps militaris on cell proliferation, cell apoptosis and cell cycle in NSCLC cell line NCI-H292 and A549 were investigated. Methods CCK-8 assay was used to determine the appropriate concentrations of Se-enriched Cordyceps militaris in NSCLC (namely NCI-H292 and A549) cells. Colony formation assay, flow cytometric and Hoechst 33342 staining assays, and flow cytometric analysis were separately employed to assess the effect of increased Se-enriched Cordyceps militaris on NSCLC cell viability, cell apoptosis and cell-cycle distribution. Finally, the qPCR and Western blot assays were, respectively, applied to evaluate the effects of Se-enriched Cordyceps militaris on the expression of pro-apoptotic member BAX and the anti-apoptotic member BCL-2, as well as of G2/M cell cycle regulatory proteins CDK1 and cyclin B1. Results The concentration of Se-enriched Cordyceps militaris was 0, 4, 8, 12 mg/mL for NCI-H292 cells, and 0, 12.5, 25, 50 mg/mL for A549 cells. NSCLC cells treated with increased Se-enriched Cordyceps militaris showed the inhibited cell viability. Se-enriched Cordyceps militaris induced NSCLC cell apoptosis in concentration-dependent manner. Consistently, Se-enriched Cordyceps militaris diminished the ratio of anti-apoptotic member BCL-2 and pro-apoptotic member BAX at mRNA and protein levels in NSCLC cells. The percentage in G2/M phase was increased in NSCLC cells treated with increased Se-enriched Cordyceps militaris. Downregulation of G2/M cell cycle regulatory proteins CDK1 and cyclin B1 at mRNA and protein levels in NSCLC cells further confirmed the effects of Se-enriched Cordyceps militaris on cell cycle. Conclusion This study demonstrated the inhibitory role of Se-enriched Cordyceps militaris in cell proliferation and its facilitating role in cell apoptosis and cell cycle in NSCLC cells, suggesting an alternative therapeutic strategy for NSCLC treatment.
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Affiliation(s)
- Lihua Luo
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, People's Republic of China.,Department of Oncology II, The Central Hospital of Enshi Autonomous Prefecture, Enshi Clinical College of Wuhan University, Enshi, Hubei 445000, People's Republic of China
| | - Ruizhi Ran
- Department of Oncology II, The Central Hospital of Enshi Autonomous Prefecture, Enshi Clinical College of Wuhan University, Enshi, Hubei 445000, People's Republic of China
| | - Jie Yao
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, People's Republic of China
| | - Fang Zhang
- Department of Oncology II, The Central Hospital of Enshi Autonomous Prefecture, Enshi Clinical College of Wuhan University, Enshi, Hubei 445000, People's Republic of China
| | - Maohui Xing
- Department of Oncology II, The Central Hospital of Enshi Autonomous Prefecture, Enshi Clinical College of Wuhan University, Enshi, Hubei 445000, People's Republic of China
| | - Min Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, People's Republic of China
| | - Lanqing Wang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, People's Republic of China
| | - Tao Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, People's Republic of China
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25
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Liu Q, Li X, Li L, Xu Z, Zhou J, Xiao W. Ginkgolide K protects SH‑SY5Y cells against oxygen‑glucose deprivation‑induced injury by inhibiting the p38 and JNK signaling pathways. Mol Med Rep 2018; 18:3185-3192. [PMID: 30066915 PMCID: PMC6102632 DOI: 10.3892/mmr.2018.9305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 05/10/2018] [Indexed: 12/25/2022] Open
Abstract
The purpose of the present study was to explore the protective effect and functional mechanism of ginkgolide K (GK: C20H22O9) on cerebral ischemia. SH-SY5Y cells were exposed to oxygen-glucose deprivation (OGD) to simulate an ischemic model in vitro. Cell viability, reactive oxygen species (ROS), nuclear staining with Hoechst 33258 and mitochondrial membrane potential were detected following 4 h of exposure to OGD. Subsequently, the expression levels of the apoptosis-related proteins, caspase-9, caspase-3, Bcl-2, Bax, p53 and c-Jun, as well as the mitogen-activated protein kinases (MAPKs) signaling molecules were detected by western blot analysis. GK significantly elevated the cell viability and decreased the generation of ROS and the number of apoptotic cells in a dose-dependent manner. Furthermore, GK markedly decreased the protein expression levels of p-p38, p-JNK, p-p53, p-c-Jun and the expression levels of Bcl-2, Bax, cleaved caspase-9 and caspase-3. In conclusion, GK demonstrated a neuroprotective effect on the simulated cerebral ischemia in vitro, and this effect was mediated through the inhibition of the mitochondria-mediated apoptosis pathway triggered by ROS-evoked p38 and JNK activation.
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Affiliation(s)
- Qiu Liu
- Jiangsu Kanion Pharmaceutical Co., Ltd., Jiangsu, Lianyungang 222001, P.R. China
| | - Xueke Li
- State Key Laboratory of New‑Tech for Chinese Medicine Pharmaceutical Process, Jiangsu, Lianyungang 222001, P.R. China
| | - Liang Li
- Jiangsu Kanion Pharmaceutical Co., Ltd., Jiangsu, Lianyungang 222001, P.R. China
| | - Zhiliang Xu
- Jiangsu Kanion Pharmaceutical Co., Ltd., Jiangsu, Lianyungang 222001, P.R. China
| | - Jun Zhou
- Jiangsu Kanion Pharmaceutical Co., Ltd., Jiangsu, Lianyungang 222001, P.R. China
| | - Wei Xiao
- Jiangsu Kanion Pharmaceutical Co., Ltd., Jiangsu, Lianyungang 222001, P.R. China
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26
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Dhanyakrishnan R, Sunitha MC, Prakash Kumar B, Sandya S, Nevin KG. Morphological and molecular effects of phenolic extract from coconut kernel on human prostate cancer cell growth in vitro. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2018. [DOI: 10.3233/mnm-17174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Coconut is an indispensable ingredient in the diet and traditional medicine of individuals belonging to the Indian subcontinent. Coconut is of high nutritional value owing to the presence of all essential dietary components, viz, saturated fatty acids, arginine rich proteins, fibre and minor components like vitamin E, phytosterols, polyphenols and flavonoids. The polyphenolic content present in coconut kernel is of particular interest due to their numerous reported beneficial effects such as reduction of oxidative stress, combating cancer and in modulating anti-inflammatory pathways. Therefore, in the present study the cytotoxic effect of the polyphenol rich fraction from coconut kernel (CKf) was evaluated in human prostate cancer (DU-145) cells. Individual components present in CKf was determined by LC-MS analysis. It showed that CKf contained several bioactive molecules which have potential anticancer activity viz, coumaric acid, myristin, chlorogenic acid and triterpenoid methyl esters. The cytotoxic effect of CKf at various concentrations (2.5–20 μg/ml) on DU-145 was assessed using MTT assay, AO/EB staining, mitochondrial superoxide/ROS production and changes in intracellular calcium levels, 24 hrs post treatment. Changes in the cell morphology and nucleus were observed using Scanning Electron Microscopy and Confocal microscopy. ROS and mitochondrial superoxide levels was evaluated using DCHF-DA and MitoSOX staining respectively. The impact of ROS on changes in cellular calcium levels was also studied using Fura-2-AM. LDH leakage from C K f treated and control cells were observed colorimetrically. Further, PCR analysis was done to detect changes in mitochondria associated apoptotic gene expression. It was also observed that C K f treatment increased the expression of pro-apoptotic genes - Bax, Bid, Bak and p53 in a dose-dependent manner. Based on the above results, it can be concluded that C K f may be used as a part of a dietary regime for controlling the progression of prostate cancer.
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Affiliation(s)
| | - Mary Chacko Sunitha
- School of Biosciences, Mahatma Gandhi University, PD Hills PO, Kottayam, Kerala, India
| | | | - Sukumaran Sandya
- Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore
- Spectroscopy/Analytical/Test Facility, Entrepreneurship Centre, Society for Innovation and Development (SID), Indian Institute of Science, Bangalore
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27
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Park YH, Jeong MS, Jang SB. Structural insights of homotypic interaction domains in the ligand-receptor signal transduction of tumor necrosis factor (TNF). BMB Rep 2017; 49:159-66. [PMID: 26615973 PMCID: PMC4915230 DOI: 10.5483/bmbrep.2016.49.3.205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Indexed: 11/21/2022] Open
Abstract
Several members of tumor necrosis factor receptor (TNFR) superfamily that these
members activate caspase-8 from death-inducing signaling complex (DISC) in TNF
ligand-receptor signal transduction have been identified. In the extrinsic
pathway, apoptotic signal transduction is induced in death domain (DD)
superfamily; it consists of a hexahelical bundle that contains 80 amino acids.
The DD superfamily includes about 100 members that belong to four subfamilies:
death domain (DD), caspase recruitment domain (CARD), pyrin domain (PYD), and
death effector domain (DED). This superfamily contains key building blocks: with
these blocks, multimeric complexes are formed through homotypic interactions.
Furthermore, each DD-binding event occurs exclusively. The DD superfamily
regulates the balance between death and survival of cells. In this study, the
structures, functions, and unique features of DD superfamily members are
compared with their complexes. By elucidating structural insights of DD
superfamily members, we investigate the interaction mechanisms of DD domains;
these domains are involved in TNF ligand-receptor signaling. These DD
superfamily members play a pivotal role in the development of more specific
treatments of cancer. [BMB Reports 2016; 49(3): 159-166]
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Affiliation(s)
- Young-Hoon Park
- Department of Molecular Biology, College of Natural Sciences, Pusan National University, Busan 46241, Korea
| | - Mi Suk Jeong
- Department of Molecular Biology, College of Natural Sciences, Pusan National University, Busan 46241, Korea
| | - Se Bok Jang
- Department of Molecular Biology, College of Natural Sciences, Pusan National University; Genetic Engineering Institute, Pusan National University, Busan 46241, Korea
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28
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Kitazawa M, Hida S, Fujii C, Taniguchi S, Ito K, Matsumura T, Okada N, Sakaizawa T, Kobayashi A, Takeoka M, Miyagawa SI. ASC Induces Apoptosis via Activation of Caspase-9 by Enhancing Gap Junction-Mediated Intercellular Communication. PLoS One 2017; 12:e0169340. [PMID: 28056049 PMCID: PMC5215782 DOI: 10.1371/journal.pone.0169340] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 12/15/2016] [Indexed: 12/20/2022] Open
Abstract
ASC (apoptosis-associated speck-like protein containing a CARD) is a key adaptor molecule of inflammasomes that mediates inflammatory and apoptotic signals. Aberrant methylation-induced silencing of ASC has been observed in a variety of cancer cells, thus implicating ASC in tumor suppression, although this role remains incompletely defined especially in the context of closely neighboring cell proliferation. As ASC has been confirmed to be silenced by abnormal methylation in HT1080 fibrosarcoma cells as well, this cell line was investigated to characterize the precise role and mechanism of ASC in tumor progression. The effects of ASC were examined using in vitro cell cultures based on comparisons between low and high cell density conditions as well as in a xenograft murine model. ASC overexpression was established by insertion of the ASC gene into pcDNA3 and pMX-IRES-GFP vectors, the latter being packed into a retrovirus and subjected to reproducible competitive assays using parental cells as an internal control, for evaluation of cell viability. p21 and p53 were silenced using shRNA. Cell viability was suppressed in ASC-expressing transfectants as compared with control cells at high cell density conditions in in vitro culture and colony formation assays and in in vivo ectopic tumor formation trials. This suppression was not detected in low cell density conditions. Furthermore, remarkable progression of apoptosis was observed in ASC-introduced cells at a high cell density, but not at a low one. ASC-dependent apoptosis was mediated not by p21, p53, or caspase-1, but rather by cleavage of caspase-9 as well as by suppression of the NF-κB-related X-linked inhibitor-of-apoptosis protein. Caspase-9 cleavage was observed to be dependent on gap junction formation. The remarkable effect of ASC on the induction of apoptosis through caspase-9 and gap junctions revealed in this study may lead to promising new approaches in anticancer therapy.
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Affiliation(s)
- Masato Kitazawa
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
- * E-mail:
| | - Shigeaki Hida
- Department of Molecular and Cellular Health Science, Nagoya City University Graduate School of Pharmaceutical Sciences, Mizuho-ku, Nagoya, Japan
| | - Chifumi Fujii
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Shun’ichiro Taniguchi
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Kensuke Ito
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Tomio Matsumura
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Nagisa Okada
- Department of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Takashi Sakaizawa
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Akira Kobayashi
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Michiko Takeoka
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shin-ichi Miyagawa
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Huang X, Huang W, Li L, Sun X, Song S, Xu Q, Zhang L, Wei BG, Deng X. Structure Determinants of Lagunamide A for Anticancer Activity and Its Molecular Mechanism of Mitochondrial Apoptosis. Mol Pharm 2016; 13:3756-3763. [PMID: 27715057 DOI: 10.1021/acs.molpharmaceut.6b00564] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Marine natural products are served as attractive source of anticancer therapeutics, with the great success of "first-in-class" drugs, such as Yondelis, Halaven, and Brentuximab vendotin. Lagunamides A-C from marine cyanobacterium, Lyngbya majuscula, exhibit exquisite growth inhibitory activities against cancer cells. In this study, we have systematically investigated the structure-activity relationships (SARs) of a concise collection of lagunamide A and its analogues constructed by total chemical synthesis against a broad panel of cancer cells derived from various tissues or organs, including A549, HeLa, U2OS, HepG2, BEL-7404, BGC-823, HCT116, MCF-7, HL-60, and A375. The R configuration of lagunamide A at C-39 position was found to be the structure determinant for anticancer activity. Further molecular mechanism study in A549 cells revealed that lagunamide A induced caspase-mediated mitochondrial apoptosis. Accompanied with the dissipation of mitochondrial membrane potential (Δφm) and overproduction of reactive oxygen species (ROS), lagunamide A led to mitochondrial dysfunction and finally caused cell death. Moreover, both anti- and pro-apoptotic B-cell lymphoma 2 (Bcl-2) family proteins participated in lagunamide A-induced mitochondrial apoptosis, especially myeloid cell leukemia-1 (Mcl-1). Overexpression of Mcl-1 partly rescued A549 cells from lagunamide A-induced apoptosis. This study suggests that lagunamide A may exert anticancer property through mitochondrial apoptosis. Together, our findings would provide insightful information for the design of new anticancer drugs derived from lagunamides.
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Affiliation(s)
- Xiaoxing Huang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Wei Huang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China.,Department of Natural Products Chemistry, School of Pharmacy, Fudan University , 826 Zhangheng Road, Shanghai 201203, China
| | - Li Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Xihuan Sun
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Siyang Song
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Qingyan Xu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Lianru Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
| | - Bang-Guo Wei
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , 826 Zhangheng Road, Shanghai 201203, China
| | - Xianming Deng
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University , Xiamen, Fujian 361102, China.,State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University , Xiamen, Fujian 361102, China
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30
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Cellular Pathways in Response to Ionizing Radiation and Their Targetability for Tumor Radiosensitization. Int J Mol Sci 2016; 17:ijms17010102. [PMID: 26784176 PMCID: PMC4730344 DOI: 10.3390/ijms17010102] [Citation(s) in RCA: 268] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/22/2015] [Accepted: 12/25/2015] [Indexed: 12/20/2022] Open
Abstract
During the last few decades, improvements in the planning and application of radiotherapy in combination with surgery and chemotherapy resulted in increased survival rates of tumor patients. However, the success of radiotherapy is impaired by two reasons: firstly, the radioresistance of tumor cells and, secondly, the radiation-induced damage of normal tissue cells located in the field of ionizing radiation. These limitations demand the development of drugs for either radiosensitization of tumor cells or radioprotection of normal tissue cells. In order to identify potential targets, a detailed understanding of the cellular pathways involved in radiation response is an absolute requirement. This review describes the most important pathways of radioresponse and several key target proteins for radiosensitization.
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31
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Abstract
The role of caspase proteases in regulated processes such as apoptosis and inflammation has been studied for more than two decades, and the activation cascades are known in detail. Apoptotic caspases also are utilized in critical developmental processes, although it is not known how cells maintain the exquisite control over caspase activity in order to retain subthreshold levels required for a particular adaptive response while preventing entry into apoptosis. In addition to active site-directed inhibitors, caspase activity is modulated by post-translational modifications or metal binding to allosteric sites on the enzyme, which stabilize inactive states in the conformational ensemble. This review provides a comprehensive global view of the complex conformational landscape of caspases and mechanisms used to select states in the ensemble. The caspase structural database provides considerable detail on the active and inactive conformations in the ensemble, which provide the cell multiple opportunities to fine tune caspase activity. In contrast, the current database on caspase modifications is largely incomplete and thus provides only a low-resolution picture of global allosteric communications and their effects on the conformational landscape. In recent years, allosteric control has been utilized in the design of small drug compounds or other allosteric effectors to modulate caspase activity.
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Affiliation(s)
- A Clay Clark
- Department of Biology, University of Texas at Arlington , Arlington, Texas 76019, United States
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32
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Langlais C, Hughes MA, Cain K, MacFarlane M. In Vitro Assembly and Analysis of the Apoptosome Complex. Cold Spring Harb Protoc 2015; 2015:pdb.prot087080. [PMID: 26631121 DOI: 10.1101/pdb.prot087080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This protocol describes an in vitro model for studying the mechanisms of caspase activation and native apoptosome complex assembly in cell-free extracts. Active caspases in dATP-activated lysates are detected by fluorimetry using a tetrapeptide substrate (DEVD) tagged with a fluorophore (AFC), which, when released, produces a real-time readout for caspase-3 and -7 (DEVDase) activity. Gel filtration is used to isolate the apoptosome complex from the activated lysates, and assembly of Apaf-1 and caspase-9 from their monomeric forms into the multiprotein apoptosome can be confirmed via western blot. Apoptosome complex activity can be shown by incubation with exogenous procaspase-3 and -7 followed by fluorimetric bioassay (to confirm functionality of the processed effector caspases) and/or western blotting (for detection of cleaved caspase-3 and -7). A method for preparation of free procaspases for the bioassay is also described.
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Affiliation(s)
- Claudia Langlais
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Michelle A Hughes
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Kelvin Cain
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Marion MacFarlane
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
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33
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Langlais C, Hughes MA, Cain K, MacFarlane M. Biochemical Analysis of Initiator Caspase-Activating Complexes: The Apoptosome and the Death-Inducing Signaling Complex. Cold Spring Harb Protoc 2015; 2015:pdb.top070326. [PMID: 26631130 DOI: 10.1101/pdb.top070326] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Apoptosis is a highly regulated process that can be initiated by activation of death receptors or perturbation of mitochondria causing the release of apoptogenic proteins. This results in the activation of caspases, which are responsible for many of the biochemical and morphological changes associated with apoptosis. Caspases are normally inactive and require activation in a cascade emanating from an "initiator" or activating caspase, which in turn activates a downstream or "effector" caspase. Activation of initiator caspases is tightly regulated and requires the assembly of caspase-9 (via mitochondrial perturbation) or caspase-8/10 (via death receptor ligation) activating complexes, which are termed the apoptosome and the death-inducing signaling complex (DISC), respectively. These large multiprotein complexes can initially be separated according to size by gel filtration chromatography and subsequently analyzed by affinity purification or immunoprecipitation. The advantage of combining these techniques is one can first assess the assembly of individual components into a multiprotein complex, and then assess the size and composition of the native functional signaling platform within a particular cell type alongside a biochemical analysis of the enriched/purified complex. Here, we describe various methods currently used for characterization of the apoptosome and DISC.
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Affiliation(s)
- Claudia Langlais
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Michelle A Hughes
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Kelvin Cain
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
| | - Marion MacFarlane
- MRC Toxicology Unit, Hodgkin Building, Leicester LE1 9HN, United Kingdom
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34
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Li YY, Wu H, Dong YG, Lin BO, Xu G, Ma YB. Application of eupatilin in the treatment of osteosarcoma. Oncol Lett 2015; 10:2505-2510. [PMID: 26622880 DOI: 10.3892/ol.2015.3563] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 05/22/2015] [Indexed: 02/01/2023] Open
Abstract
5,7-dihydroxy-3',4',6-trimethoxyflavone, commonly known as eupatilin, is a traditional Asian medicinal plant, which is mainly used for the treatment of gastritis, as well as its use as an anti-inflammatory agent. Eupatilin is a bioactive compound; however, its effects on osteosarcoma (OS) have remained to be elucidated. Therefore, the present study aimed to investigate the effects of eupatilin on this malignant bone tumor, using the U-2 OS cell line. The experimental results revealed that eupatilin inhibited U-2 OS cell growth in a concentration-dependent manner and induced G2/M phase cell cycle arrest and apoptosis. Additionally, western blot analysis indicated that eupatilin was able to trigger the mitochondrial apoptotic pathway, demonstrated by the enhanced Bax/B cell lymphoma-2 ratio, decrease in mitochondrial membrane potential, release of cytochrome c, caspase-3 and -9 activation and poly(ADP-ribose)polymerase cleavage detected in the U-2 OS cells. These results indicated that eupatilin was able to inhibit U-2 OS cancer cell proliferation by the induction of apoptosis via the mitochondrial intrinsic pathway. Eupatilin may therefore represent a novel anticancer drug for use in the treatment of osteosarcoma.
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Affiliation(s)
- Yan-Yan Li
- Department of Neurology, The Second People's Hospital of Mudanjiang, Mudanjiang, Heilongjiang 157013, P.R. China
| | - Hao Wu
- Department of Orthopedics, Sengong Hospital, Harbin, Heilongjiang 150040, P.R. China
| | - Yi-Guo Dong
- Department of Orthopedics, Hongqi Hospital, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - B O Lin
- Department of Orthopedics, Hongqi Hospital, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Gang Xu
- Department of Orthopedics, Hongqi Hospital, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Yu-Bo Ma
- Department of Orthopedics, Hongqi Hospital, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
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35
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Lee HH, Lee S, Lee K, Shin YS, Kang H, Cho H. Anti-cancer effect of Cordyceps militaris in human colorectal carcinoma RKO cells via cell cycle arrest and mitochondrial apoptosis. ACTA ACUST UNITED AC 2015; 23:35. [PMID: 26141646 PMCID: PMC4491205 DOI: 10.1186/s40199-015-0117-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 06/19/2015] [Indexed: 01/01/2023]
Abstract
Background Cordyceps militaris has been used as a traditional medicine in Asian countries for a long time. Different types of Cordyceps extract were reported to have various pharmacological activities including an anti-cancer effect. We investigated the inhibitory effect of Cordyceps militaris ethanol extract on a human colorectal cancer-derived cell line, RKO. Methods RKO cells were treated with various concentrations of nucleosides-enriched ethanol extract of Cordyceps militaris for 48 h and cytotoxicity was measured using a CCK-8 assay. Then, xenograft Balb/c nude mice were injected with RKO cells and subsequently orally administered with ethanol extract of Cordyceps militaris every day for 3 weeks to examine the inhibitory effect on tumor growth. Lastly, the effect of Cordyceps militaris on cell cycle as well as apoptosis was measured using flow cytometry. Also, the expression of p53, caspase 9, cleaved caspase-3, cleaved PARP, Bim, Bax, Bak, and Bad were detected using western blot assay. Results RKO cells were highly susceptible to the ethanol extract of Cordyceps militaris (CME) and the growth of RKO cells-derived tumor was significantly delayed by the treatment of Cordyceps militaris. Cordyceps militaris induced cell cycle arrest in G2/M phase (untreated; 20.5 %, CME 100 μg/ml; 61.67 %, CME 300 μg/ml; 66.33 %) and increased early apoptosis (untreated; 1.01 %, CME 100 μg/ml; 8.48 %, CME 300 μg/ml; 18.07 %). The expression of p53, cleaved caspase 9, cleaved caspase-3, cleaved PARP, Bim, Bak, and Bad were upregulated by the treatment of Cordyceps militaris. Conclusion Ethanol extract of Cordyceps militaris was highly cytotoxic to human colorectal carcinoma RKO cells and inhibited the growth of tumor in xenograft model. The anti-tumor effect of Cordyceps militaris was associated with an induction of cell cycle arrest and mitochondrial-mediated apoptosis.
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Affiliation(s)
- Hwan Hee Lee
- College of Pharmacy, Duksung Women's University, Seoul, 132-714, Republic of Korea. .,Innovative Drug Center, Duksung Women's University, Seoul, 132-714, Republic of Korea.
| | - Seulki Lee
- College of Pharmacy, Duksung Women's University, Seoul, 132-714, Republic of Korea. .,Innovative Drug Center, Duksung Women's University, Seoul, 132-714, Republic of Korea.
| | - Kanghyo Lee
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, 369-873, Republic of Korea.
| | - Yu Su Shin
- Department of Medicinal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, 369-873, Republic of Korea.
| | - Hyojeung Kang
- College of Pharmacy, Research Institute of Pharmaceutical Sciences and Institute for Microorganisms, Kyungpook National University, Daegu, 702-701, Republic of Korea.
| | - Hyosun Cho
- College of Pharmacy, Duksung Women's University, Seoul, 132-714, Republic of Korea. .,Innovative Drug Center, Duksung Women's University, Seoul, 132-714, Republic of Korea.
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36
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Anti-tumor effect of Cordyceps militaris in HCV-infected human hepatocarcinoma 7.5 cells. J Microbiol 2015; 53:468-74. [DOI: 10.1007/s12275-015-5198-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/21/2015] [Accepted: 05/26/2015] [Indexed: 12/21/2022]
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37
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Apoptosis-inducing effects of extracts from desert plants in HepG2 human hepatocarcinoma cells. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/s2221-1691(15)30150-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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38
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Chen Q, Xia X, Wu S, Wu A, Qi D, Liu W, Cui F, Jiao Y, Zhu W, Gu Y, Gao H, Zhang X, Cao J. Apoptosis, necrosis, and autophagy in mouse intestinal damage after 15-Gy whole body irradiation. Cell Biochem Funct 2014; 32:647-56. [DOI: 10.1002/cbf.3068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 08/24/2014] [Accepted: 08/26/2014] [Indexed: 01/16/2023]
Affiliation(s)
- Qiu Chen
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou China
| | - Xiaochun Xia
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Nantong Tumor Hospital; Nantong China
| | - Shu Wu
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
| | - Anqing Wu
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
| | - Dandan Qi
- Stem Cell Research Laboratory of Jiangsu Province; Suzhou China
| | - Wei Liu
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
| | - Fengmei Cui
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou China
| | - Yang Jiao
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou China
| | - Wei Zhu
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou China
| | - Yongping Gu
- Experimental Centre of Medical College; Soochow University; Suzhou China
| | - Hongjian Gao
- Electron Microscopy Core Labratory, Shanghai Medical College; Fudan University; Shanghai China
| | - Xueguang Zhang
- Stem Cell Research Laboratory of Jiangsu Province; Suzhou China
- Jiangsu Institute of Clinical Immunology; Suzhou China
- Institute of Medical Biotechnology; Soochow University; Suzhou Jiangsu Province China
| | - Jianping Cao
- School of Radiation Medicine and Protection; Soochow University; Suzhou China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions; Soochow University; Suzhou China
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39
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Würstle ML, Rehm M. A systems biology analysis of apoptosome formation and apoptosis execution supports allosteric procaspase-9 activation. J Biol Chem 2014; 289:26277-26289. [PMID: 25107908 DOI: 10.1074/jbc.m114.590034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The protease caspase-9 is activated on the apoptosome, a multiprotein signal transduction platform that assembles in response to mitochondria-dependent apoptosis initiation. Despite extensive molecular research, the assembly of the holo-apoptosome and the process of caspase-9 activation remain incompletely understood. Here, we therefore integrated quantitative data on the molecular interactions and proteolytic processes during apoptosome formation and apoptosis execution and conducted mathematical simulations to investigate the resulting biochemical signaling, quantitatively and kinetically. Interestingly, when implementing the homodimerization of procaspase-9 as a prerequisite for activation, the calculated kinetics of apoptosis execution and the efficacy of caspase-3 activation failed to replicate experimental data. In contrast, assuming a scenario in which procaspase-9 is activated allosterically upon binding to the apoptosome backbone, the mathematical simulations quantitatively and kinetically reproduced all experimental data. These data included a XIAP threshold concentration at which apoptosis execution is suppressed in HeLa cervical cancer cells, half-times of procaspase-9 processing, as well as the molecular timer function of the apoptosome. Our study therefore provides novel mechanistic insight into apoptosome-dependent apoptosis execution and suggests that caspase-9 is activated allosterically by binding to the apoptosome backbone. Our findings challenge the currently prevailing dogma that all initiator procaspases require homodimerization for activation.
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Affiliation(s)
- Maximilian L Würstle
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland; Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Markus Rehm
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin 2, Ireland; Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland.
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A polysaccharide from pomegranate peels induces the apoptosis of human osteosarcoma cells via the mitochondrial apoptotic pathway. Tumour Biol 2014; 35:7475-82. [DOI: 10.1007/s13277-014-1983-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 04/17/2014] [Indexed: 01/11/2023] Open
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Chai J, Shi Y. Apoptosome and inflammasome: conserved machineries for caspase activation. Natl Sci Rev 2014. [DOI: 10.1093/nsr/nwt025] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Apoptosome and inflammasome are multimeric protein complexes that mediate the activation of specific caspases at the onset of apoptosis and inflammation. The central component of apoptosome or inflammasome is a tripartite scaffold protein, exemplified by Apaf-1 and NLRC4, which contains an amino-terminal homotypic interaction motif, a central nucleotide-binding oligomerization domain and a carboxyl-terminal ligand-sensing domain. In the absence of death cue or an inflammatory signal, Apaf-1 or NLRC4 exists in an auto-inhibited, monomeric state, which is stabilized by adenosine diphosphate (ADP). Binding to an apoptosis- or inflammation-inducing ligand, together with replacement of ADP by adenosine triphosphate (ATP), results in the formation of a multimeric apoptosome or inflammasome. The assembled apoptosome and inflammasome serve as dedicated machineries to facilitate the activation of specific caspases. In this review, we describe the structure and functional mechanisms of mammalian inflammasome and apoptosomes from three representative organisms. Emphasis is placed on the molecular mechanism of caspase activation and the shared features of apoptosomes and inflammasomes.
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Affiliation(s)
- Jijie Chai
- Center for Life Sciences, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Yigong Shi
- Center for Life Sciences, School of Life Sciences and School of Medicine, Tsinghua University, Beijing 100084, China
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Abstract
Voltage-dependent anion channels (VDACs), known as outer mitochondrial membrane proteins, are present in all eukaryotic cells. In mammals, they are now recognized to play crucial roles in the regulation of metabolic and energetic functions of mitochondria as well as in mitochondria-mediated apoptosis, in association with various proteins and non-protein modulators. Although there is much less information available for plant than for animal VDACs, their similar electrophysiological and topological properties suggest that some common functions are conserved among eukaryotic VDACs. Recently, it has been revealed that plant VDACs also have various important physiological functions not only in developmental and reproductive processes, but also in biotic and abiotic stress responses, including programmed cell death. In this review, we summarize recent findings about the sequence motifs, localization, and function of plant VDACs and discuss these results in the light of recent advances in research on animal VDACs.
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Affiliation(s)
- Yoshihiro Takahashi
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba, Sendai, Miyagi 980-8577, Japan.
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Stan SD, Singh SV, Whitcomb DC, Brand RE. Phenethyl isothiocyanate inhibits proliferation and induces apoptosis in pancreatic cancer cells in vitro and in a MIAPaca2 xenograft animal model. Nutr Cancer 2013; 66:747-55. [PMID: 24195616 PMCID: PMC4008639 DOI: 10.1080/01635581.2013.795979] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Pancreatic cancer is often diagnosed at an advanced stage and it has a poor prognosis that points to an increased need to develop effective chemoprevention strategies for this disease. We examined the ability of phenethyl isothiocyanate (PEITC), a naturally occurring isothiocyanate found in cruciferous vegetables, to inhibit the growth of pancreatic cancer cells in vitro and in a MIAPaca2 xenograft animal model. Exposure to PEITC inhibited pancreatic cancer cell growth in a dose-dependent manner, with an IC50 of approximately 7 μmol/L. PEITC treatment induced G2/M phase cell cycle arrest, downregulated the antiapoptotic proteins Bcl-2 and Bcl-XL, upregulated the proapoptotic protein Bak, and suppressed Notch 1 and 2 levels. In addition, treatment with PEITC induced cleavage of poly-(ADP-ribose) polymerase and led to increased cytoplasmic histone-associated DNA fragmentation and subdiploid (apoptotic) fraction in pancreatic cancer cells. Oral administration of PEITC suppressed the growth of pancreatic cancer cells in a MIAPaca2 xenograft animal model. Our data show that PEITC exerts its inhibitory effect on pancreatic cancer cells through several mechanisms, including G2/M phase cell cycle arrest and induction of apoptosis, and supports further investigation of PEITC as a chemopreventive agent for pancreatic cancer.
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Affiliation(s)
- Silvia D. Stan
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana
| | - Shivendra V. Singh
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - David C. Whitcomb
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Randall E. Brand
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Isolation, characterisation and reconstitution of cell death signalling complexes. Methods 2013; 61:98-104. [PMID: 23485576 DOI: 10.1016/j.ymeth.2013.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 02/13/2013] [Accepted: 02/16/2013] [Indexed: 02/07/2023] Open
Abstract
Apoptosis and necroptosis are dependent on the formation/activation of distinct multi-protein complexes; these include the Death-Inducing Signalling Complex (DISC), apoptosome, piddosome, necrosome and ripoptosome. Despite intense research, the mechanisms that regulate assembly/function of several of these cell death signalling platforms remain to be elucidated. It is now increasingly evident that the composition and stoichiometry of components within these key signalling platforms not only determines the final signalling outcome but also the mode of cell death. Characterising these complexes can therefore provide new insights into how cell death is regulated and also how these cell death signalling platforms could potentially be targeted in the context of disease. Large multi-protein complexes can initially be separated according to their size by gel filtration or sucrose density gradient centrifugation followed by subsequent affinity-purification or immunoprecipitation. The advantage of combining these techniques is that you can assess the assembly of individual components into a complex and then assess the size and stoichiometric composition of the native functional signalling complex within a particular cell type. This, alongside reconstitution of a complex from its individual core components can therefore provide new insight into the mechanisms that regulate assembly/function of key multi-protein signalling complexes. Here, we describe the successful application of a range of methodologies that can be used to characterise the assembly of large multi-protein complexes such as the apoptosome, DISC and ripoptosome. Together with their subsequent purification and/or reconstitution, these approaches can provide novel insights into how cell death signalling platforms are regulated in both normal cell physiology and disease.
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Lebherz-Eichinger D, Krenn CG, Roth GA. Keratin 18 and heat-shock protein in chronic kidney disease. Adv Clin Chem 2013; 62:123-49. [PMID: 24772666 DOI: 10.1016/b978-0-12-800096-0.00003-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chronic kidney disease (CKD) is an affliction associated with increased systemic stress and cell death. We will review the role of keratin 18 (K-18) and caspase-cleaved CK-18 (ccK-18) as markers for increased apoptosis and necrosis during renal failure progression. The importance of preventative expression of heat-shock proteins (HSPs) in response to cell stress will also be discussed. The frequent development of CKD leads to serious complications. The potential of use of K-18 and HSP as early biomarkers of renal failure will be reviewed. Also, the role of these proteins with respect to dialysis regimes and in acute ischemic kidney injury following renal transplantation will be discussed.
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Slimani L, Micol D, Amat J, Delcros G, Meunier B, Taillandier D, Polge C, Béchet D, Dardevet D, Picard B, Attaix D, Listrat A, Combaret L. The worsening of tibialis anterior muscle atrophy during recovery post-immobilization correlates with enhanced connective tissue area, proteolysis, and apoptosis. Am J Physiol Endocrinol Metab 2012; 303:E1335-47. [PMID: 23032683 DOI: 10.1152/ajpendo.00379.2012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sustained muscle wasting due to immobilization leads to weakening and severe metabolic consequences. The mechanisms responsible for muscle recovery after immobilization are poorly defined. Muscle atrophy induced by immobilization worsened in the lengthened tibialis anterior (TA) muscle but not in the shortened gastrocnemius muscle. Here, we investigated some mechanisms responsible for this differential response. Adult rats were subjected to unilateral hindlimb casting for 8 days (I8). Casts were removed at I8, and animals were allowed to recover for 10 days (R1 to R10). The worsening of TA atrophy following immobilization occurred immediately after cast removal at R1 and was sustained until R10. This atrophy correlated with a decrease in type IIb myosin heavy chain (MyHC) isoform and an increase in type IIx, IIa, and I isoforms, with muscle connective tissue thickening, and with increased collagen (Col) I mRNA levels. Increased Col XII, Col IV, and Col XVIII mRNA levels during TA immobilization normalized at R6. Sustained enhanced peptidase activities of the proteasome and apoptosome activity contributed to the catabolic response during the studied recovery period. Finally, increased nuclear apoptosis prevailed only in the connective tissue compartment of the TA. Altogether, the worsening of the TA atrophy pending immediate reloading reflects a major remodeling of its fiber type properties and alterations in the structure/composition of the extracellular compartment that may influence its elasticity/stiffness. The data suggest that sustained enhanced ubiquitin-proteasome-dependent proteolysis and apoptosis are important for these adaptations and provide some rationale for explaining the atrophy of reloaded muscles pending immobilization in a lengthened position.
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Affiliation(s)
- Lamia Slimani
- Institut National de Recherche Agronomique (INRA), Unite Mixte de Recherche (UMR), 1019 Unité de Nutrition Humaine 63122, Saint Genès Champanelle, France
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Experimental study on inhibitory effects of diallyl sulfide on growth and invasion of human osteosarcoma MG-63 cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2014:378684. [PMID: 25097657 PMCID: PMC4109593 DOI: 10.1155/2014/378684] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 05/08/2014] [Accepted: 06/05/2014] [Indexed: 11/17/2022]
Abstract
Background. Allicin, the major component of freshly crushed garlic, is one of the most biologically active compounds of garlic; it has been reported to induce apoptosis in cancer cells; however, the mechanism by which allicin exerts its apoptotic effects is not fully understood. The aim of the present study was to further elucidate the apoptotic pathways induced by allicin in the human ovarian cancer cell line SKOV3. Methods. Cell proliferation and apoptosis were measured by cell-counting assay and flow cytometry analysis. Activation of the signaling pathway was screened by human phospho-kinase array analysis, and the activated pathway and its related proteins were further confirmed by western blot analysis. Results. Allicin induced SKOV3 cell apoptosis and JNK phosphorylation in a time- and dose-dependent manner, but these were significantly blocked by SP600125 (an inhibitor of JNK). The findings suggest that JNK phosphorylation is related to the action of allicin on SKOV3 cells. Furthermore, JNK activation induced Bcl-2 family activation, triggered mitochondria-mediated signaling pathways, and led to the translocation of a considerable amount of Bax and cytochrome c release. Conclusions. JNK activation and mitochondrial Bax translocation are involved in allicin-induced apoptosis in SKOV3 cells. Our data input new insights to the literature of allicin-induced apoptosis.
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Golden EB, Pellicciotta I, Demaria S, Barcellos-Hoff MH, Formenti SC. The convergence of radiation and immunogenic cell death signaling pathways. Front Oncol 2012; 2:88. [PMID: 22891162 PMCID: PMC3413017 DOI: 10.3389/fonc.2012.00088] [Citation(s) in RCA: 198] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 07/18/2012] [Indexed: 11/13/2022] Open
Abstract
Ionizing radiation (IR) triggers programmed cell death in tumor cells through a variety of highly regulated processes. Radiation-induced tumor cell death has been studied extensively in vitro and is widely attributed to multiple distinct mechanisms, including apoptosis, necrosis, mitotic catastrophe (MC), autophagy, and senescence, which may occur concurrently. When considering tumor cell death in the context of an organism, an emerging body of evidence suggests there is a reciprocal relationship in which radiation stimulates the immune system, which in turn contributes to tumor cell kill. As a result, traditional measurements of radiation-induced tumor cell death, in vitro, fail to represent the extent of clinically observed responses, including reductions in loco-regional failure rates and improvements in metastases free and overall survival. Hence, understanding the immunological responses to the type of radiation-induced cell death is critical. In this review, the mechanisms of radiation-induced tumor cell death are described, with particular focus on immunogenic cell death (ICD). Strategies combining radiotherapy with specific chemotherapies or immunotherapies capable of inducing a repertoire of cancer specific immunogens might potentiate tumor control not only by enhancing cell kill but also through the induction of a successful anti-tumor vaccination that improves patient survival.
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Affiliation(s)
- Encouse B Golden
- Department of Radiation Oncology, New York University New York, NY, USA
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Growth inhibition of human gynecologic and colon cancer cells by Phyllanthus watsonii through apoptosis induction. PLoS One 2012; 7:e34793. [PMID: 22536331 PMCID: PMC3335034 DOI: 10.1371/journal.pone.0034793] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 03/08/2012] [Indexed: 12/18/2022] Open
Abstract
Phyllanthus watsonii Airy Shaw is an endemic plant found in Peninsular Malaysia. Although there are numerous reports on the anti cancer properties of other Phyllanthus species, published information on the cytotoxicity of P. watsonii are very limited. The present study was carried out with bioassay-guided fractionation approach to evaluate the cytotoxicity and apoptosis induction capability of the P. watsonii extracts and fractions on human gynecologic (SKOV-3 and Ca Ski) and colon (HT-29) cancer cells. P. watsonii extracts exhibited strong cytotoxicity on all the cancer cells studied with IC(50) values of ≤ 20.0 µg/mL. Hexane extract of P. watsonii was further subjected to bioassay-guided fractionation and yielded 10 fractions (PW-1→PW-10). PW-4→PW-8 portrayed stronger cytotoxic activity and was further subjected to bioassay-guided fractionation and resulted with 8 sub-fractions (PPWH-1→PPWH-8). PPWH-7 possessed greatest cytotoxicity (IC(50) values ranged from 0.66-0.83 µg/mL) and was selective on the cancer cells studied. LC-MS/MS analysis of PPWH-7 revealed the presence of ellagic acid, geranic acid, glochidone, betulin, phyllanthin and sterol glucoside. Marked morphological changes, ladder-like appearance of DNA and increment in caspase-3 activity indicating apoptosis were clearly observed in both human gynecologic and colon cancer cells treated with P. watsonii especially with PPWH-7. The study also indicated that P. watsonii extracts arrested cell cycle at different growth phases in SKOV-3, Ca Ski and HT-29 cells. Cytotoxic and apoptotic potential of the endemic P. watsonii was investigated for the first time by bioassay-guided approach. These results demonstrated that P. watsonii selectively inhibits the growth of SKOV-3, Ca Ski and HT-29 cells through apoptosis induction and cell cycle modulation. Hence, P. watsonii has the potential to be further exploited for the discovery and development of new anti cancer drugs.
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