101
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Sun XY, Zhang H, Liu J, Ouyang JM. Repair activity and crystal adhesion inhibition of polysaccharides with different molecular weights from red algae Porphyra yezoensis against oxalate-induced oxidative damage in renal epithelial cells. Food Funct 2019; 10:3851-3867. [DOI: 10.1039/c8fo02556h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Porphyra yezoensis polysaccharide repaired oxalate-injured renal epithelial cells and decreased COM crystal adhesion on the cell surface.
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Affiliation(s)
- Xin-Yuan Sun
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
- Institute of Biomineralization and Lithiasis Research
| | - Hui Zhang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
- Institute of Biomineralization and Lithiasis Research
| | - Jie Liu
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Jian-Ming Ouyang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
- Institute of Biomineralization and Lithiasis Research
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102
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Endolysosomal Ca 2+ Signalling and Cancer Hallmarks: Two-Pore Channels on the Move, TRPML1 Lags Behind! Cancers (Basel) 2018; 11:cancers11010027. [PMID: 30591696 PMCID: PMC6356888 DOI: 10.3390/cancers11010027] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 12/21/2018] [Accepted: 12/21/2018] [Indexed: 12/22/2022] Open
Abstract
The acidic vesicles of the endolysosomal (EL) system are emerging as an intracellular Ca2+ store implicated in the regulation of multiple cellular functions. The EL Ca2+ store releases Ca2+ through a variety of Ca2+-permeable channels, including Transient Receptor Potential (TRP) Mucolipin 1-3 (TRPML1-3) and two-pore channels 1-2 (TPC1-2), whereas EL Ca2+ refilling is sustained by the proton gradient across the EL membrane and/or by the endoplasmic reticulum (ER). EL Ca2+ signals may be either spatially restricted to control vesicle trafficking, autophagy and membrane repair or may be amplified into a global Ca2+ signal through the Ca2+-dependent recruitment of ER-embedded channels. Emerging evidence suggested that nicotinic acid adenine dinucleotide phosphate (NAADP)-gated TPCs sustain multiple cancer hallmarks, such as migration, invasiveness and angiogenesis. Herein, we first survey the EL Ca2+ refilling and release mechanisms and then focus on the oncogenic role of EL Ca2+ signaling. While the evidence in favor of TRPML1 involvement in neoplastic transformation is yet to be clearly provided, TPCs are emerging as an alternative target for anticancer therapies.
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103
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Picart-Armada S, Fernández-Albert F, Vinaixa M, Yanes O, Perera-Lluna A. FELLA: an R package to enrich metabolomics data. BMC Bioinformatics 2018; 19:538. [PMID: 30577788 PMCID: PMC6303911 DOI: 10.1186/s12859-018-2487-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 11/12/2018] [Indexed: 12/27/2022] Open
Abstract
Background Pathway enrichment techniques are useful for understanding experimental metabolomics data. Their purpose is to give context to the affected metabolites in terms of the prior knowledge contained in metabolic pathways. However, the interpretation of a prioritized pathway list is still challenging, as pathways show overlap and cross talk effects. Results We introduce FELLA, an R package to perform a network-based enrichment of a list of affected metabolites. FELLA builds a hierarchical representation of an organism biochemistry from the Kyoto Encyclopedia of Genes and Genomes (KEGG), containing pathways, modules, enzymes, reactions and metabolites. In addition to providing a list of pathways, FELLA reports intermediate entities (modules, enzymes, reactions) that link the input metabolites to them. This sheds light on pathway cross talk and potential enzymes or metabolites as targets for the condition under study. FELLA has been applied to six public datasets –three from Homo sapiens, two from Danio rerio and one from Mus musculus– and has reproduced findings from the original studies and from independent literature. Conclusions The R package FELLA offers an innovative enrichment concept starting from a list of metabolites, based on a knowledge graph representation of the KEGG database that focuses on interpretability. Besides reporting a list of pathways, FELLA suggests intermediate entities that are of interest per se. Its usefulness has been shown at several molecular levels on six public datasets, including human and animal models. The user can run the enrichment analysis through a simple interactive graphical interface or programmatically. FELLA is publicly available in Bioconductor under the GPL-3 license. Electronic supplementary material The online version of this article (10.1186/s12859-018-2487-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sergio Picart-Armada
- B2SLab, Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya, Barcelona, 08028, Spain. .,Networking Biomedical Research Centre in the subject area of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain. .,Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, 08950, Spain.
| | - Francesc Fernández-Albert
- B2SLab, Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya, Barcelona, 08028, Spain.,Networking Biomedical Research Centre in the subject area of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain.,Takeda Cambridge Ltd, Cambridge, CB4 0PZ, UK
| | - Maria Vinaixa
- Metabolomics Platform, IISPV, Department of Electronic Engineering (DEEEA), Universitat Rovira i Virgili, Tarragona, 43003, Spain.,CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Madrid, 28029, Spain
| | - Oscar Yanes
- Metabolomics Platform, IISPV, Department of Electronic Engineering (DEEEA), Universitat Rovira i Virgili, Tarragona, 43003, Spain.,CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Madrid, 28029, Spain
| | - Alexandre Perera-Lluna
- B2SLab, Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya, Barcelona, 08028, Spain.,Networking Biomedical Research Centre in the subject area of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain.,Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, 08950, Spain
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104
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Lenz B, Braendli-Baiocco A, Engelhardt J, Fant P, Fischer H, Francke S, Fukuda R, Gröters S, Harada T, Harleman H, Kaufmann W, Kustermann S, Nolte T, Palazzi X, Pohlmeyer-Esch G, Popp A, Romeike A, Schulte A, Lima BS, Tomlinson L, Willard J, Wood CE, Yoshida M. Characterizing Adversity of Lysosomal Accumulation in Nonclinical Toxicity Studies: Results from the 5th ESTP International Expert Workshop. Toxicol Pathol 2018; 46:224-246. [PMID: 29471779 DOI: 10.1177/0192623317749452] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Lysosomes have a central role in cellular catabolism, trafficking, and processing of foreign particles. Accumulation of endogenous and exogenous materials in lysosomes represents a common finding in nonclinical toxicity studies. Histologically, these accumulations often lack distinctive features indicative of lysosomal or cellular dysfunction, making it difficult to consistently interpret and assign adverse dose levels. To help address this issue, the European Society of Toxicologic Pathology organized a workshop where representative types of lysosomal accumulation induced by pharmaceuticals and environmental chemicals were presented and discussed. The expert working group agreed that the diversity of lysosomal accumulations requires a case-by-case weight-of-evidence approach and outlined several factors to consider in the adversity assessment, including location and type of cell affected, lysosomal contents, severity of the accumulation, and related pathological effects as evidence of cellular or organ dysfunction. Lysosomal accumulations associated with cytotoxicity, inflammation, or fibrosis were generally considered to be adverse, while those found in isolation (without morphologic or functional consequences) were not. Workshop examples highlighted the importance of thoroughly characterizing the biological context of lysosomal effects, including mechanistic data and functional in vitro readouts if available. The information provided here should facilitate greater consistency and transparency in the interpretation of lysosomal effects.
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Affiliation(s)
- B Lenz
- 1 Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - A Braendli-Baiocco
- 1 Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - J Engelhardt
- 2 Ionis Pharmaceuticals, Inc., Carlsbad, California, USA
| | - P Fant
- 3 Charles River Laboratories, Lyon, France
| | - H Fischer
- 1 Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - S Francke
- 4 Center for Food Safety and Applied Nutrition (CFSAN), U.S. Food and Drug Administration, College Park, Maryland, USA
| | - R Fukuda
- 5 Axcelead Drug Discovery Partners, Inc., Kanagawa, Japan
| | - S Gröters
- 6 Department of Experimental Toxicology and Ecology, BASF SE, Ludwigshafen, Germany
| | - T Harada
- 7 Institute of Environmental Toxicology, Ibaraki, Japan
| | - H Harleman
- 8 Global Medical, Clinical and Regulatory Affairs, Global Preclinical Development and Management, Fresenius-Kabi Deutschland GmbH, Bad Homburg, Germany
| | | | - S Kustermann
- 1 Roche Pharma Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - T Nolte
- 10 Nonclinical Drug Safety Germany, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany
| | - X Palazzi
- 11 Global Pathology, DSRD, Pfizer WRD, Groton, Connecticut, USA
| | - G Pohlmeyer-Esch
- 10 Nonclinical Drug Safety Germany, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany
| | - A Popp
- 12 Global Preclinical Safety, AbbVie, Ludwigshafen, Germany
| | - A Romeike
- 13 Covance Laboratories, Inc., Rueil-Malmaison, France
| | - A Schulte
- 14 Department of Chemicals and Product Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - B Silva Lima
- 15 Department of Pharmacological Sciences, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - L Tomlinson
- 11 Global Pathology, DSRD, Pfizer WRD, Groton, Connecticut, USA
| | - J Willard
- 16 CDER, U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | - C E Wood
- 17 Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - M Yoshida
- 18 Food Safety Commission, Cabinet Office, Tokyo, Japan
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105
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Lee TB, Seo EJ, Lee JY, Jun JH. Synergistic Anticancer Effects of Curcumin and Hinokitiol on Gefitinib Resistant Non-Small Cell Lung Cancer Cells. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801301223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study evaluated the synergistic effect of curcumin (diferuloylmethane) and hinokitiol (β-thujaplicin), natural product derived phytochemicals, on gefitinib (Iressa) resistant non-small cell lung cancer (NSCLC) cells. Gefitinib, a tyrosine kinase inhibitor targeting epidermal growth factor receptor (EGFR), is widely used for lung cancer treatment. However, gefitinib resistance is easily acquired by NSCLC and followed by the development of progressive disease. Curcumin and hinokitiol are well-known bioactive compounds demonstrating anti-inflammation, anti-bacteria and anticancer effects. However, the effects of co-treatment of curcumin and hinokitiol on cancer cells have not been reported. Here, we postulated, for the first time, the possibility of combination therapy with curcumin and hinokitiol for treatment of gefitinib resistant NSCLC via increment of apoptosis and lysosomal enlargement.
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Affiliation(s)
- Tae-Bok Lee
- Department of Senior Healthcare, BK21 plus Program, Graduate School of Eulji University, Seongnam 13135, Korea
- Department of Research and Experiments, Seoul National University Hospital, Seoul 03082, Korea
| | - Eun-Ju Seo
- Department of Research and Experiments, Seoul National University Hospital, Seoul 03082, Korea
| | - Ji-Yun Lee
- Department of Pathology, College of Medicine, Korea University, Seoul 02841, Korea
| | - Jin Hyun Jun
- Department of Senior Healthcare, BK21 plus Program, Graduate School of Eulji University, Seongnam 13135, Korea
- Department of Biomedical Laboratory Science, Eulji University, Seongnam 13135, Korea
- Eulji Medi-Bio Research Institute (EMBRI), Eulji University, Daejeon 34824, Korea
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106
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Fog CK, Zago P, Malini E, Solanko LM, Peruzzo P, Bornaes C, Magnoni R, Mehmedbasic A, Petersen NHT, Bembi B, Aerts JFMG, Dardis A, Kirkegaard T. The heat shock protein amplifier arimoclomol improves refolding, maturation and lysosomal activity of glucocerebrosidase. EBioMedicine 2018; 38:142-153. [PMID: 30497978 PMCID: PMC6306395 DOI: 10.1016/j.ebiom.2018.11.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/16/2018] [Accepted: 11/16/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Gaucher Disease is caused by mutations of the GBA gene which encodes the lysosomal enzyme acid beta-glucosidase (GCase). GBA mutations commonly affect GCase function by perturbing its protein homeostasis rather than its catalytic activity. Heat shock proteins are well known cytoprotective molecules with functions in protein homeostasis and lysosomal function and their manipulation has been suggested as a potential therapeutic strategy for GD. The investigational drug arimoclomol, which is in phase II/III clinical trials, is a well-characterized HSP amplifier and has been extensively clinically tested. Importantly, arimoclomol efficiently crosses the blood-brain-barrier presenting an opportunity to target the neurological manifestations of GD, which remains without a disease-modifying therapy. METHODS We used a range of biological and biochemical in vitro assays to assess the effect of arimoclomol on GCase activity in ex vivo systems of primary fibroblasts and neuronal-like cells from GD patients. FINDINGS We found that arimoclomol induced relevant HSPs such as ER-resident HSP70 (BiP) and enhanced the folding, maturation, activity, and correct cellular localization of mutated GCase across several genotypes including the common L444P and N370S mutations in primary cells from GD patients. These effects where recapitulated in a human neuronal model of GD obtained by differentiation of multipotent adult stem cells. INTERPRETATION These data demonstrate the potential of HSP-targeting therapies in GCase-deficiencies and strongly support the clinical development of arimoclomol as a potential therapeutic option for the neuronopathic forms of GD. FUNDING The research was funded by Orphazyme A/S, Copenhagen, Denmark.
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Affiliation(s)
- Cathrine K Fog
- Orphazyme A/S, Ole Maaloes vej 3, DK-2200 Copenhagen, Denmark
| | - Paola Zago
- Regional Coordinator Centre for Rare Diseases, Academic Hospital "Santa Maria della Misericordia", Udine, Italy
| | - Erika Malini
- Regional Coordinator Centre for Rare Diseases, Academic Hospital "Santa Maria della Misericordia", Udine, Italy
| | | | - Paolo Peruzzo
- Regional Coordinator Centre for Rare Diseases, Academic Hospital "Santa Maria della Misericordia", Udine, Italy
| | - Claus Bornaes
- Orphazyme A/S, Ole Maaloes vej 3, DK-2200 Copenhagen, Denmark
| | | | | | | | - Bruno Bembi
- Regional Coordinator Centre for Rare Diseases, Academic Hospital "Santa Maria della Misericordia", Udine, Italy
| | | | - Andrea Dardis
- Regional Coordinator Centre for Rare Diseases, Academic Hospital "Santa Maria della Misericordia", Udine, Italy
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107
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Dou X, Chen L, Lei M, Zellmer L, Jia Q, Ling P, He Y, Yang W, Liao DJ. Evaluating the Remote Control of Programmed Cell Death, with or without a Compensatory Cell Proliferation. Int J Biol Sci 2018; 14:1800-1812. [PMID: 30443184 PMCID: PMC6231223 DOI: 10.7150/ijbs.26962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/24/2018] [Indexed: 12/23/2022] Open
Abstract
Organisms and their different component levels, whether organelle, cellular or other, come by birth and go by death, and the deaths are often balanced by new births. Evolution on the one hand has built demise program(s) in cells of organisms but on the other hand has established external controls on the program(s). For instance, evolution has established death program(s) in animal cells so that the cells can, when it is needed, commit apoptosis or senescent death (SD) in physiological situations and stress-induced cell death (SICD) in pathological situations. However, these programmed cell deaths are not predominantly regulated by the cells that do the dying but, instead, are controlled externally and remotely by the cells' superior(s), i.e. their host tissue or organ or even the animal's body. Currently, it is still unclear whether a cell has only one death program or has several programs respectively controlling SD, apoptosis and SICD. In animals, apoptosis exterminates, in a physiological manner, healthy but no-longer needed cells to avoid cell redundancy, whereas suicidal SD and SICD, like homicidal necrosis, terminate ill but useful cells, which may be followed by regeneration of the live cells and by scar formation to heal the damaged organ or tissue. Therefore, “who dies” clearly differentiates apoptosis from SD, SICD and necrosis. In animals, apoptosis can occur only in those cell types that retain a lifelong ability of proliferation and never occurs in those cell types that can no longer replicate in adulthood. In cancer cells, SICD is strengthened, apoptosis is dramatically weakened while SD has been lost. Most published studies professed to be about apoptosis are actually about SICD, which has four basic and well-articulated pathways involving caspases or involving pathological alterations in the mitochondria, endoplasmic reticula, or lysosomes.
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Affiliation(s)
- Xixi Dou
- Key Laboratory of Biopharmaceuticals, Shandong Academy of Pharmaceutical Sciences, Jinan 250101, Shandong Province, P.R. China.,Technology Center, Shandong Freda Pharmaceutical Group, Jinan 250101, Shandong Province, P.R. China
| | - Lichan Chen
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, P.R. China
| | - Mingjuan Lei
- Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Lucas Zellmer
- Masonic Cancer Center, University of Minnesota, 435 E. River Road, Minneapolis, MN 55455, USA
| | - Qingwen Jia
- Key Laboratory of Biopharmaceuticals, Shandong Academy of Pharmaceutical Sciences, Jinan 250101, Shandong Province, P.R. China
| | - Peixue Ling
- Key Laboratory of Biopharmaceuticals, Shandong Academy of Pharmaceutical Sciences, Jinan 250101, Shandong Province, P.R. China.,Technology Center, Shandong Freda Pharmaceutical Group, Jinan 250101, Shandong Province, P.R. China
| | - Yan He
- Key Lab of Endemic and Ethnic Diseases of the Ministry of Education of China in Guizhou Medical University, Guiyang 550004, Guizhou Province, P.R. China
| | - Wenxiu Yang
- Department of Pathology, Guizhou Medical University Hospital, Guiyang 550004, Guizhou province, P.R. China
| | - Dezhong Joshua Liao
- Key Lab of Endemic and Ethnic Diseases of the Ministry of Education of China in Guizhou Medical University, Guiyang 550004, Guizhou Province, P.R. China.,Department of Pathology, Guizhou Medical University Hospital, Guiyang 550004, Guizhou province, P.R. China
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108
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Wang C, Dong B, Kong X, Zhang N, Song W, Lin W. Dual site-controlled two-photon fluorescent probe for the imaging of lysosomal pH in living cells. LUMINESCENCE 2018; 33:1275-1280. [PMID: 30256510 DOI: 10.1002/bio.3546] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 07/12/2018] [Accepted: 07/17/2018] [Indexed: 12/25/2022]
Abstract
Abnormal lysosomal pH is closely associated with many diseases, and real-time monitoring of lysosomal pH is important for understanding the lysosome physiological nature. Here, we present a novel lysosome-targeting two-photon fluorescent probe (MP-lys) for monitoring pH changes in living cells. As a dual site-controlled probe, MP-lys employed morpholine and piperazine groups as the lysosome-targeting groups and pH response sites. MP-lys showed rapid, reversible and sensitive fluorescence response to pH. MP-lys possessed lysosome-targeting properties, and could be used for two-photon imaging of chloroquine-induced pH variation in living cells.
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Affiliation(s)
- Chao Wang
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
| | - Baoli Dong
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
| | - Xiuqi Kong
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
| | - Nan Zhang
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
| | - Wenhui Song
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
| | - Weiying Lin
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, China
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109
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Guntuku L, Gangasani JK, Thummuri D, Borkar RM, Manavathi B, Ragampeta S, Vaidya JR, Sistla R, Vegi NGM. IITZ-01, a novel potent lysosomotropic autophagy inhibitor, has single-agent antitumor efficacy in triple-negative breast cancer in vitro and in vivo. Oncogene 2018; 38:581-595. [PMID: 30166591 DOI: 10.1038/s41388-018-0446-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 06/18/2018] [Accepted: 06/29/2018] [Indexed: 02/07/2023]
Abstract
Autophagy is a homeostatic process that recycles damaged organelles and long-lived proteins by delivering them in double-membrane vesicles to lysosomes for degradation. Autophagy has a prominent role in survival, proliferation, and resistance of tumors in metabolic and chemotherapeutic stress conditions. Clinical trials with chloroquine-a known autophagy inhibitor-were unable to achieve complete autophagy inhibition in vivo, warranting the search for more potent autophagy inhibitors. In a process of exploring the mechanism of action of previously identified cytotoxic s-triazine analogs, we discovered that both IITZ-01 and IITZ-02 act as potent autophagy inhibitors. Treatment with these compounds resulted in the vacuolated appearance of cells due to their specific accumulation in lysosomes. In addition, these basic compounds also deacidify lysosomes as evidenced by the decrease in lysotracker red staining and inhibit maturation of lysosomal enzymes leading to lysosomal dysfunction. IITZ-01 and IITZ-02 enhance autophagosome accumulation but inhibit autophagosomal degradation by impairing lysosomal function, finally resulting in the inhibition of autophagy. Interestingly, compound IITZ-01 exhibited more than 10-fold potent autophagy inhibition along with 12- to 20-fold better cytotoxic action than CQ. IITZ-01 and IITZ-02 also abolished mitochondrial membrane potential and triggered apoptosis through the mitochondria-mediated pathway. Furthermore, IITZ-01 and IITZ-02 displayed potent antitumor action in vivo through autophagy inhibition and apoptosis induction in MDA-MB-231 breast cancer xenograft model with IITZ-01 exhibiting superior anticancer efficacy. Overall, these data demonstrate that IITZ-01 is potent autophagy inhibitor with single-agent anticancer activity and awaits further preclinical development as potential anticancer therapeutic.
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Affiliation(s)
- Lalita Guntuku
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, TS, India
| | - Jagadeesh Kumar Gangasani
- Crop Protection Chemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, TS, India.,Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Chennai, TN, India
| | - Dinesh Thummuri
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, TS, India
| | - Roshan M Borkar
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Hyderabad, TS, India
| | - Bramanandam Manavathi
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, TS, India
| | - Srinivas Ragampeta
- National Centre for Mass Spectrometry, CSIR-Indian Institute of Chemical Technology, Hyderabad, TS, India
| | - Jayathirtha Rao Vaidya
- Crop Protection Chemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, TS, India.,Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Chennai, TN, India
| | - Ramakrishna Sistla
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad, TS, India
| | - Naidu G M Vegi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, TS, India. .,Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Guwahati, Assam, India.
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Corsi F, Caputo F, Traversa E, Ghibelli L. Not Only Redox: The Multifaceted Activity of Cerium Oxide Nanoparticles in Cancer Prevention and Therapy. Front Oncol 2018; 8:309. [PMID: 30155442 PMCID: PMC6103310 DOI: 10.3389/fonc.2018.00309] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 07/23/2018] [Indexed: 11/28/2022] Open
Abstract
Much information is accumulating on the effect of cerium oxide nanoparticles (CNPs) as cell-protective agents, reducing oxidative stress through their unique ability of scavenging noxious reactive oxygen species via an energy-free, auto-regenerative redox cycle, where superoxides and peroxides are sequentially reduced exploiting the double valence (Ce3+/Ce4+) on nanoparticle surface. In vitro and in vivo studies consistently report that CNPs are responsible for attenuating and preventing almost any oxidative damage and pathology. Particularly, CNPs were found to exert strong anticancer activities, helping correcting the aberrant homeostasis of cancer microenvironment, normalizing stroma-epithelial communication, contrasting angiogenesis, and strengthening the immune response, leading to reduction of tumor mass in vivo. Since these homeostatic alterations are of an oxidative nature, their relief is generally attributed to CNPs redox activity. Other studies however reported that CNPs exert selective cytotoxic activity against cancer cells and sensitize cancer cells to chemotherapy- and radiotherapy-induced apoptosis: such effects are hardly the result of antioxidant activity, suggesting that CNPs exert such important anticancer effects through additional, non-redox mechanisms. Indeed, using Sm-doped CNPs devoid of redox activity, we could recently demonstrate that the radio-sensitizing effect of CNPs on human keratinocytes is independent from the redox switch. Mechanisms involving particle dissolution with release of toxic Ce4+ atoms, or differential inhibition of the catalase vs. SOD-mimetic activity with accumulation of H2O2 have been proposed, explaining such intriguing findings only partially. Much effort is urgently required to address the unconventional mechanisms of the non-redox bioactivity of CNPs, which may provide unexpected medicinal tools against cancer.
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Affiliation(s)
- Francesca Corsi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Fanny Caputo
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy.,Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Enrico Traversa
- School of Materials and Energy, University of Electronic Science and Technology of China, Sichuan, China
| | - Lina Ghibelli
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
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111
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Zhang QQ, Yang T, Li RS, Zou HY, Li YF, Guo J, Liu XD, Huang CZ. A functional preservation strategy for the production of highly photoluminescent emerald carbon dots for lysosome targeting and lysosomal pH imaging. NANOSCALE 2018; 10:14705-14711. [PMID: 30039824 DOI: 10.1039/c8nr03212b] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Lysosomes, which can be easily targeted by molecules with abundant amino groups, play critical roles in endocytosis, autophagy, and phagocytosis; thus, it is important to accurately characterize lysosomes, including lysosomal pH, in living cells to understand their physiological and pathological functions. Herein, a new type of highly photoluminescent (PL) emerald carbon dots (CDs) was easily prepared through a functional preservation strategy (FPS) by simply mixing p-benzoquinone and ethanediamine at room temperature. The as-prepared CDs possessed abundant amino groups preserved from ethanediamine owing to FPS, and they exhibited excellent photostability as compared to the commercial LysoTracker probes. Consequently, they actively targeted lysosomes to sensitively respond to lysosomal pH in vitro owing to their abundant amino groups and good hydrophilicity. Thus, we could successfully monitor lysosomal pH dynamics during apoptosis in live cells.
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Affiliation(s)
- Qian Qian Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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112
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De Leon-Rodriguez CM, Rossi DCP, Fu MS, Dragotakes Q, Coelho C, Guerrero Ros I, Caballero B, Nolan SJ, Casadevall A. The Outcome of the Cryptococcus neoformans-Macrophage Interaction Depends on Phagolysosomal Membrane Integrity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 201:583-603. [PMID: 29858266 PMCID: PMC6245949 DOI: 10.4049/jimmunol.1700958] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 05/08/2018] [Indexed: 01/15/2023]
Abstract
Cryptococcus neoformans is a fungal pathogen with worldwide distribution. C. neoformans resides within mature phagolysosomes where it often evades killing and replicates. C. neoformans induces phagolysosomal membrane permeabilization (PMP), but the mechanism for this phenomenon and its consequences for macrophage viability are unknown. In this study, we used flow cytometry methodology in combination with cell viability markers and LysoTracker to measure PMP in J774.16 and murine bone marrow-derived macrophages infected with C. neoformans Our results showed that cells manifesting PMP were positive for apoptotic markers, indicating an association between PMP and apoptosis. We investigated the role of phospholipase B1 in C. neoformans induction of PMP. Macrophages infected with a C. neoformans Δplb1 mutant had reduced PMP compared with those infected with wild-type and phospholipase B1-complemented strains, suggesting a mechanism of action for this virulence factor. Capsular enlargement inside macrophages was identified as an additional likely mechanism for phagolysosomal membrane damage. Macrophages undergoing apoptosis did not maintain an acidic phagolysosomal pH. Induction of PMP with ciprofloxacin enhanced macrophages to trigger lytic exocytosis whereas nonlytic exocytosis was common in those without PMP. Our results suggest that modulation of PMP is a critical event in determining the outcome of C. neoformans-macrophage interaction.
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Affiliation(s)
| | - Diego C P Rossi
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Man Shun Fu
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Quigly Dragotakes
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Carolina Coelho
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Ignacio Guerrero Ros
- Department of Pathology, Albert Einstein College of Medicine, New York, NY 10461; and
| | - Benjamin Caballero
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, New York, NY 10461
| | - Sabrina J Nolan
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
| | - Arturo Casadevall
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY 10461;
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205
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113
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Dorayappan KDP, Wanner R, Wallbillich JJ, Saini U, Zingarelli R, Suarez AA, Cohn DE, Selvendiran K. Hypoxia-induced exosomes contribute to a more aggressive and chemoresistant ovarian cancer phenotype: a novel mechanism linking STAT3/Rab proteins. Oncogene 2018; 37:3806-3821. [PMID: 29636548 PMCID: PMC6043362 DOI: 10.1038/s41388-018-0189-0] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 12/13/2017] [Accepted: 02/07/2018] [Indexed: 12/21/2022]
Abstract
Hypoxia-mediated tumor progression, metastasis, and drug resistance are major clinical challenges in ovarian cancer. Exosomes released in the hypoxic tumor microenvironment may contribute to these challenges by transferring signaling proteins between cancer cells and normal cells. We observed that ovarian cancer cells exposed to hypoxia significantly increased their exosome release by upregulating Rab27a, downregulating Rab7, LAMP1/2, NEU-1, and also by promoting a more secretory lysosomal phenotype. STAT3 knockdown in ovarian cancer cells reduced exosome release by altering the Rab family proteins Rab7 and Rab27a under hypoxic conditions. We also found that exosomes from patient-derived ascites ovarian cancer cell lines cultured under hypoxic conditions carried more potent oncogenic proteins-STAT3 and FAS that are capable of significantly increasing cell migration/invasion and chemo-resistance in vitro and tumor progression/metastasis in vivo. Hypoxic ovarian cancer cells derived exosomes (HEx) are proficient in re-programming the immortalized fallopian tube secretory epithelial cells (FT) to become pro-tumorigenic in mouse fallopian tubes. In addition, cisplatin efflux via exosomes was significantly increased in ovarian cancer cells under hypoxic conditions. Co-culture of HEx with tumor cells led to significantly decreased dsDNA damage and increased cell survival in response to cisplatin treatment. Blocking exosome release by known inhibitor Amiloride or STAT3 inhibitor and treating with cisplatin resulted in a significant increase in apoptosis, decreased colony formation, and proliferation. Our results demonstrate that HEx are more potent in augmenting metastasis/chemotherapy resistance in ovarian cancer and may serve as a novel mechanism for tumor metastasis, chemo-resistance, and a point of intervention for improving clinical outcomes.
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Affiliation(s)
- Kalpana Deepa Priya Dorayappan
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Ross Wanner
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - John J Wallbillich
- Department of OB/GYN, Division of Gynecologic Oncology, Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - Uksha Saini
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Roman Zingarelli
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Adrian A Suarez
- Department of Pathology, Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - David E Cohn
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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114
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Study on the apoptosis mediated by apoptosis-inducing-factor and influencing factors of bovine muscle during postmortem aging. Food Chem 2018; 266:359-367. [PMID: 30381198 DOI: 10.1016/j.foodchem.2018.06.032] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 04/02/2018] [Accepted: 06/07/2018] [Indexed: 01/13/2023]
Abstract
This study investigated the apoptosis pathway mediated by apoptosis-inducing factors (AIF) and internal factors that influence the release of AIF. The results indicated that the AIF expression was decreased in mitochondria and increased in nucleus (P < 0.05). However, no significant differences were observed in the AIF expression in mitochondria with caspase inhibitor treatment. The optical density of nucleus and mitochondrial swelling was significant increased (P < 0.05). Reactive oxygen species (ROS) fell gradually within the first 6 h and increased in the next 24 h. Calpain I activity was decreased, Ca2+ concentration, cathepsin B and D activities was increased (P < 0.05). The results demonstrated that AIF-mediated caspase-dependent pathway was a new mitochondrial apoptosis pathway and that mitochondrial swelling, ROS content, Ca2+ concentration, calpain I, cathepsin B and cathepsin D activities are the key influencing factors in apoptosis in postmortem bovine muscle.
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115
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Kolb-Lenz D, Fuchs R, Lohberger B, Heitzer E, Meditz K, Pernitsch D, Pritz E, Groselj-Strele A, Leithner A, Liegl-Atzwanger B, Rinner B. Characterization of the endolysosomal system in human chordoma cell lines: is there a role of lysosomes in chemoresistance of this rare bone tumor? Histochem Cell Biol 2018; 150:83-92. [PMID: 29725750 DOI: 10.1007/s00418-018-1673-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2018] [Indexed: 02/07/2023]
Abstract
Chordoma is a rare tumor of the bone derived from remnants of the notochord with pronounced chemoresistance. A common feature of the notochord and chordoma cells is distinct vacuolization. Recently, the notochord vacuole was described as a lysosome-related organelle. Since lysosomes are considered as mediators of drug resistance in cancer, we were interested whether they may also play a role in chemoresistance of chordoma. We characterized the lysosomal compartment in chordoma cell lines by cytochemistry, electron microscopy (ELMI) and mutational analysis of genes essential for the physiology of lysosomes. Furthermore, we tested for the first time the cytotoxicity of chloroquine, which targets lysosomes, on chordoma. Cytochemical stainings clearly demonstrated a huge mass of lysosomes in chordoma cell lines with perinuclear accumulation. Also vacuoles in chordoma cells were positive for the lysosomal marker LAMP1 but showed no acidic pH. Genetic analysis detected no apparent mutation associated with known lysosomal pathologies suggesting that vacuolization and the huge lysosomal mass of chordoma cell lines is rather a relict of the notochord than a result of transformation. ELMI investigation of chordoma cells confirmed the presence of large vacuoles, lysosomes and autophagosomes with heterogeneous ultrastructure embedded in glycogen. Interestingly, chordoma cells seem to mobilize cellular glycogen stores via autophagy. Our first preclinical data suggested no therapeutically benefit of chloroquine for chordoma. Even though, chordoma cells are crammed with lysosomes which are according to their discoverer de Duve "cellular suicide bags". Destabilizing these "suicide bags" might be a promising strategy for the treatment of chordoma.
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Affiliation(s)
- Dagmar Kolb-Lenz
- Center of Medical Research, Medical University of Graz, Stiftingtalstraße 24, 8010, Graz, Austria.,Chair of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Robert Fuchs
- Chair of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Heinrichstraße 31, 8010, Graz, Austria.
| | - Birgit Lohberger
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Ellen Heitzer
- Diagnostic & Research Institute of Human Genetics, Diagnostic and Research Center for Molecular Biomedicine, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Katharina Meditz
- Division of Biomedical Research, Medical University of Graz, Roseggerweg 48, 8010, Graz, Austria
| | - Dominique Pernitsch
- Center of Medical Research, Medical University of Graz, Stiftingtalstraße 24, 8010, Graz, Austria
| | - Elisabeth Pritz
- Center of Medical Research, Medical University of Graz, Stiftingtalstraße 24, 8010, Graz, Austria
| | - Andrea Groselj-Strele
- Center of Medical Research, Medical University of Graz, Stiftingtalstraße 24, 8010, Graz, Austria
| | - Andreas Leithner
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Bernadette Liegl-Atzwanger
- Diagnostic & Research Institute of Pathology, Diagnostic and Research Center for Molecular BioMedicine, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Beate Rinner
- Division of Biomedical Research, Medical University of Graz, Roseggerweg 48, 8010, Graz, Austria
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116
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Ivanova L, Fæste CK, Solhaug A. Role of P -glycoprotein in deoxynivalenol-mediated in vitro toxicity. Toxicol Lett 2018; 284:21-28. [DOI: 10.1016/j.toxlet.2017.11.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 11/30/2022]
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117
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Chen X, Gu X, Zhang H. Sidt2 regulates hepatocellular lipid metabolism through autophagy. J Lipid Res 2018; 59:404-415. [PMID: 29363559 DOI: 10.1194/jlr.m073817] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/23/2018] [Indexed: 12/22/2022] Open
Abstract
SID1 transmembrane family member 2 (Sidt2) is an integral lysosomal membrane protein. To investigate its explicit function, we generated a global Sidt2 knockout mouse model (Sidt2-/-). Compared with the littermate controls, Sidt2-/- mice exhibited a remarkable accumulation of lipid droplets in liver. First, it was observed that food consumption, hepatocyte fatty acid uptake and de novo lipogenesis, hepatocyte lipolysis, and TG secretion in the form of very low density lipoprotein were comparable between Sidt2-/- and WT mice. However, the hepatic β-oxidation of fatty acids decreased significantly as revealed by a low level of serum β-hydroxybutyrate in the Sidt2-/- mice along with normal mRNA expression of genes involved in fatty acid oxidation. In addition, the classical autophagy pathway marker proteins, p62 and LC3-II, increased in liver, along with compromised autophagic flux in primary hepatocytes, indicating a block of autophagosome maturation due to Sidt2 deficiency, which was also supported by electron microscopy image analysis both in livers and in primary hepatocytes from Sidt2-/- mice. It was concluded that Sidt2 plays an important role in mouse hepatic lipid homeostasis by regulating autophagy at the terminal stage.
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Affiliation(s)
- Xueru Chen
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuefan Gu
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huiwen Zhang
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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118
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Endolysosomal Cation Channels and Cancer-A Link with Great Potential. Pharmaceuticals (Basel) 2018; 11:ph11010004. [PMID: 29303993 PMCID: PMC5874700 DOI: 10.3390/ph11010004] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/01/2018] [Accepted: 01/04/2018] [Indexed: 12/21/2022] Open
Abstract
The endolysosomal system (ES) consists of lysosomes; early, late, and recycling endosomes; and autophagosomes. It is a key regulator not only of macromolecule degradation and recycling, plasma membrane repair, homeostasis, and lipid storage, but also of antigen presentation, immune defense, cell motility, cell death signaling, tumor growth, and cancer progression. In addition, it plays a critical role in autophagy, and the autophagy-lysosome pathway is intimately associated with the hallmarks of cancer, such as escaping cell death pathways, evading immune surveillance, and deregulating metabolism. The function of endolysosomes is critically dependent on both soluble and endolysosomal membrane proteins such as ion channels and transporters. Cation channels found in the ES include members of the TRP (transient receptor potential) channel superfamily, namely TRPML channels (mucolipins) as well as two-pore channels (TPCs). In recent studies, these channels have been found to play crucial roles in endolysosomal trafficking, lysosomal exocytosis, and autophagy. Mutation or loss of these channel proteins can impact multiple endolysosomal trafficking pathways. A role for TPCs in cancer cell migration and metastasis, linked to distinct defects in endolysosomal trafficking such as integrin trafficking, has been recently established. In this review, we give an overview on the function of lysosomes in cancer with a particular focus on the roles which TPCs and TRPML channels play in the ES and how this can affect cancer cells.
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119
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Marín de Mas I, Aguilar E, Zodda E, Balcells C, Marin S, Dallmann G, Thomson TM, Papp B, Cascante M. Model-driven discovery of long-chain fatty acid metabolic reprogramming in heterogeneous prostate cancer cells. PLoS Comput Biol 2018; 14:e1005914. [PMID: 29293497 PMCID: PMC5766231 DOI: 10.1371/journal.pcbi.1005914] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 01/12/2018] [Accepted: 12/01/2017] [Indexed: 12/17/2022] Open
Abstract
Epithelial-mesenchymal-transition promotes intra-tumoral heterogeneity, by enhancing tumor cell invasiveness and promoting drug resistance. We integrated transcriptomic data for two clonal subpopulations from a prostate cancer cell line (PC-3) into a genome-scale metabolic network model to explore their metabolic differences and potential vulnerabilities. In this dual cell model, PC-3/S cells express Epithelial-mesenchymal-transition markers and display high invasiveness and low metastatic potential, while PC-3/M cells present the opposite phenotype and higher proliferative rate. Model-driven analysis and experimental validations unveiled a marked metabolic reprogramming in long-chain fatty acids metabolism. While PC-3/M cells showed an enhanced entry of long-chain fatty acids into the mitochondria, PC-3/S cells used long-chain fatty acids as precursors of eicosanoid metabolism. We suggest that this metabolic reprogramming endows PC-3/M cells with augmented energy metabolism for fast proliferation and PC-3/S cells with increased eicosanoid production impacting angiogenesis, cell adhesion and invasion. PC-3/S metabolism also promotes the accumulation of docosahexaenoic acid, a long-chain fatty acid with antiproliferative effects. The potential therapeutic significance of our model was supported by a differential sensitivity of PC-3/M cells to etomoxir, an inhibitor of long-chain fatty acid transport to the mitochondria. The coexistence within the same tumor of a variety of subpopulations, featuring different phenotypes (intra-tumoral heterogeneity) represents a challenge for diagnosis, prognosis and targeted therapies. In this work, we have explored the metabolic differences underlying tumor heterogeneity by building cell-type-specific genome-scale metabolic models that integrate transcriptome and metabolome data of two clonal subpopulations derived from the same prostate cancer cell line (PC-3). These subpopulations display either highly proliferative, cancer stem cell (PC-3/M) or highly invasive, epithelial-mesenchymal-transition-like phenotypes (PC-3/S). Our model-driven analysis and experimental validations have unveiled a differential utilization of the long-chain fatty acids pool in both subpopulations. More specifically, our findings show an enhanced entry of long-chain fatty acids into the mitochondria in PC-3/M cells, while in PC-3/S cells, long-chain fatty acids are used as precursors of eicosanoid metabolism. The different utilization of long-chain fatty acids between subpopulations endows PC-3/M cells with a highly proliferative phenotype while enhances PC-3/S invasive phenotype. The present work provides a tool to unveil key metabolic nodes associated with tumor heterogeneity and highlights potential subpopulation-specific targets with important therapeutic implications.
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Affiliation(s)
- Igor Marín de Mas
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
- Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Esther Aguilar
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
| | - Erika Zodda
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
- Department of Cell Biology, Barcelona Institute for Molecular Biology (IBMB), National Research Council (CSIC), Barcelona, Spain
| | - Cristina Balcells
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
| | - Silvia Marin
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
| | | | - Timothy M. Thomson
- Department of Cell Biology, Barcelona Institute for Molecular Biology (IBMB), National Research Council (CSIC), Barcelona, Spain
| | - Balázs Papp
- Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary
- * E-mail: (BP); (MC)
| | - Marta Cascante
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- Institute of Biomedicine of University of Barcelona (IBUB) and Associated Unit with CSIC, Barcelona, Spain
- * E-mail: (BP); (MC)
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120
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Trybus W, Król G, Trybus E, Stachurska A, Kopacz- Bednarska A, Król T. Aloe-Emodin Influence on the Lysosomal Compartment of Hela Cells. Asian Pac J Cancer Prev 2017; 18:3273-3279. [PMID: 29286219 PMCID: PMC5980883 DOI: 10.22034/apjcp.2017.18.12.3273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background: Aloe-emodin belongs to the group of anthraquinones having extremely high biological activity. The aim of this study was to evaluate the range of morphological and biochemical changes in HeLa cells treated with aloe-emodin, especially with regard to the lysosomal compartment. Methods: Marking of lysosomes was performed with neutral red staining for conventional light microscopy and acridine orange staining for confocal microscopy. To evaluate ctivity of lysosomal enzymes and permeability of the lysosomal membrane, spectrophotometric techniques were employed. Results: Aloe-emodin caused increased permeability of lysosomal membranes in HeLa cells, expressed inter alia by extinction of the orange color of acridine orange (lysosomal marker) and in reduction of neutral red uptake by lysosomes. These changes are accompanied by release of cathepsins from the interior of the lysosomes with a simultaneous highly significant increase in their activity in the cytoplasm. Conclusion: The results indicate that aloeemodin can activate lysosomal pathway-dependent apoptosis in HeLa cells.
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Affiliation(s)
- Wojciech Trybus
- Department of Cell Biology and Electron Microscopy, Institute of Biology, The Jan Kochanowski University, Świętokrzyska 15, 25-406 Kielce, Poland.
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Naegeli KM, Hastie E, Garde A, Wang Z, Keeley DP, Gordon KL, Pani AM, Kelley LC, Morrissey MA, Chi Q, Goldstein B, Sherwood DR. Cell Invasion In Vivo via Rapid Exocytosis of a Transient Lysosome-Derived Membrane Domain. Dev Cell 2017; 43:403-417.e10. [PMID: 29161591 DOI: 10.1016/j.devcel.2017.10.024] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/19/2017] [Accepted: 10/22/2017] [Indexed: 11/27/2022]
Abstract
Invasive cells use small invadopodia to breach basement membrane (BM), a dense matrix that encases tissues. Following the breach, a large protrusion forms to clear a path for tissue entry by poorly understood mechanisms. Using RNAi screening for defects in Caenorhabditis elegans anchor cell (AC) invasion, we found that UNC-6(netrin)/UNC-40(DCC) signaling at the BM breach site directs exocytosis of lysosomes using the exocyst and SNARE SNAP-29 to form a large protrusion that invades vulval tissue. Live-cell imaging revealed that the protrusion is enriched in the matrix metalloprotease ZMP-1 and transiently expands AC volume by more than 20%, displacing surrounding BM and vulval epithelium. Photobleaching and genetic perturbations showed that the BM receptor dystroglycan forms a membrane diffusion barrier at the neck of the protrusion, which enables protrusion growth. Together these studies define a netrin-dependent pathway that builds an invasive protrusion, an isolated lysosome-derived membrane structure specialized to breach tissue barriers.
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Affiliation(s)
- Kaleb M Naegeli
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA; Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27708, USA
| | - Eric Hastie
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Aastha Garde
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China; Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Daniel P Keeley
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Kacy L Gordon
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Ariel M Pani
- Biology Department and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Laura C Kelley
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Meghan A Morrissey
- The Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Qiuyi Chi
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA
| | - Bob Goldstein
- Biology Department and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - David R Sherwood
- Department of Biology, Regeneration Next, Duke University, 130 Science Drive, Box 90338, Durham, NC 27708, USA; Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27708, USA; Regeneration Next, Duke University, Durham, NC 27710, USA.
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122
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Kirkegaard T, Gray J, Priestman DA, Wallom KL, Atkins J, Olsen OD, Klein A, Drndarski S, Petersen NHT, Ingemann L, Smith DA, Morris L, Bornæs C, Jørgensen SH, Williams I, Hinsby A, Arenz C, Begley D, Jäättelä M, Platt FM. Heat shock protein-based therapy as a potential candidate for treating the sphingolipidoses. Sci Transl Med 2017; 8:355ra118. [PMID: 27605553 DOI: 10.1126/scitranslmed.aad9823] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 08/18/2016] [Indexed: 12/17/2022]
Abstract
Lysosomal storage diseases (LSDs) often manifest with severe systemic and central nervous system (CNS) symptoms. The existing treatment options are limited and have no or only modest efficacy against neurological manifestations of disease. We demonstrate that recombinant human heat shock protein 70 (HSP70) improves the binding of several sphingolipid-degrading enzymes to their essential cofactor bis(monoacyl)glycerophosphate in vitro. HSP70 treatment reversed lysosomal pathology in primary fibroblasts from 14 patients with eight different LSDs. HSP70 penetrated effectively into murine tissues including the CNS and inhibited glycosphingolipid accumulation in murine models of Fabry disease (Gla(-/-)), Sandhoff disease (Hexb(-/-)), and Niemann-Pick disease type C (Npc1(-/-)) and attenuated a wide spectrum of disease-associated neurological symptoms in Hexb(-/-) and Npc1(-/-) mice. Oral administration of arimoclomol, a small-molecule coinducer of HSPs that is currently in clinical trials for Niemann-Pick disease type C (NPC), recapitulated the effects of recombinant human HSP70, suggesting that heat shock protein-based therapies merit clinical evaluation for treating LSDs.
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Affiliation(s)
| | - James Gray
- Department of Pharmacology, University of Oxford, Oxford, U.K
| | | | | | - Jennifer Atkins
- Department of Pharmacology, University of Oxford, Oxford, U.K
| | - Ole Dines Olsen
- Orphazyme ApS, Copenhagen, Denmark. Cell Death and Metabolism Unit, Center for Autophagy, Recycling, and Metabolism, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Alexander Klein
- Institut für Chemie der Humboldt-Universität zu Berlin, Berlin, Germany
| | | | | | | | - David A Smith
- Department of Pharmacology, University of Oxford, Oxford, U.K
| | - Lauren Morris
- Department of Pharmacology, University of Oxford, Oxford, U.K
| | | | | | - Ian Williams
- Department of Pharmacology, University of Oxford, Oxford, U.K
| | | | - Christoph Arenz
- Institut für Chemie der Humboldt-Universität zu Berlin, Berlin, Germany
| | - David Begley
- Institute of Pharmaceutical Science, King's College London, London, U.K
| | - Marja Jäättelä
- Cell Death and Metabolism Unit, Center for Autophagy, Recycling, and Metabolism, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Frances M Platt
- Department of Pharmacology, University of Oxford, Oxford, U.K
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123
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Jena P, Roxbury D, Galassi TV, Akkari L, Horoszko CP, Iaea DB, Budhathoki-Uprety J, Pipalia N, Haka AS, Harvey JD, Mittal J, Maxfield FR, Joyce JA, Heller DA. A Carbon Nanotube Optical Reporter Maps Endolysosomal Lipid Flux. ACS NANO 2017; 11:10689-10703. [PMID: 28898055 PMCID: PMC5707631 DOI: 10.1021/acsnano.7b04743] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 08/31/2017] [Indexed: 05/18/2023]
Abstract
Lipid accumulation within the lumen of endolysosomal vesicles is observed in various pathologies including atherosclerosis, liver disease, neurological disorders, lysosomal storage disorders, and cancer. Current methods cannot measure lipid flux specifically within the lysosomal lumen of live cells. We developed an optical reporter, composed of a photoluminescent carbon nanotube of a single chirality, that responds to lipid accumulation via modulation of the nanotube's optical band gap. The engineered nanomaterial, composed of short, single-stranded DNA and a single nanotube chirality, localizes exclusively to the lumen of endolysosomal organelles without adversely affecting cell viability or proliferation or organelle morphology, integrity, or function. The emission wavelength of the reporter can be spatially resolved from within the endolysosomal lumen to generate quantitative maps of lipid content in live cells. Endolysosomal lipid accumulation in cell lines, an example of drug-induced phospholipidosis, was observed for multiple drugs in macrophages, and measurements of patient-derived Niemann-Pick type C fibroblasts identified lipid accumulation and phenotypic reversal of this lysosomal storage disease. Single-cell measurements using the reporter discerned subcellular differences in equilibrium lipid content, illuminating significant intracellular heterogeneity among endolysosomal organelles of differentiating bone-marrow-derived monocytes. Single-cell kinetics of lipoprotein-derived cholesterol accumulation within macrophages revealed rates that differed among cells by an order of magnitude. This carbon nanotube optical reporter of endolysosomal lipid content in live cells confers additional capabilities for drug development processes and the investigation of lipid-linked diseases.
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Affiliation(s)
- Prakrit
V. Jena
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Daniel Roxbury
- Department
of Chemical Engineering, University of Rhode
Island, Kingston, Rhode Island 02881, United States
| | - Thomas V. Galassi
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Leila Akkari
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Division
of Tumor Biology & Immunology, The Netherlands
Cancer Institute, Amsterdam 1066 CX, The Netherlands
| | - Christopher P. Horoszko
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - David B. Iaea
- Weill
Cornell Medicine, New York, New York 10065, United States
| | | | - Nina Pipalia
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Abigail S. Haka
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Jackson D. Harvey
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
| | - Jeetain Mittal
- Department
of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | | | - Johanna A. Joyce
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
- Ludwig Center
for Cancer Research, University of Lausanne, Lausanne CH 1066, Switzerland
| | - Daniel A. Heller
- Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
- Weill
Cornell Medicine, New York, New York 10065, United States
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124
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Platt FM. Emptying the stores: lysosomal diseases and therapeutic strategies. Nat Rev Drug Discov 2017; 17:133-150. [PMID: 29147032 DOI: 10.1038/nrd.2017.214] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Lysosomal storage disorders (LSDs) - designated as 'orphan' diseases - are inborn errors of metabolism caused by defects in genes that encode proteins involved in various aspects of lysosomal homeostasis. For many years, LSDs were viewed as unattractive targets for the development of therapies owing to their low prevalence. However, the development and success of the first commercial biologic therapy for an LSD - enzyme replacement therapy for type 1 Gaucher disease - coupled with regulatory incentives rapidly catalysed commercial interest in therapeutically targeting LSDs. Despite ongoing challenges, various therapeutic strategies for LSDs now exist, with many agents approved, undergoing clinical trials or in preclinical development.
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Affiliation(s)
- Frances M Platt
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
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125
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Gulumian M, Andraos C. In Search of a Converging Cellular Mechanism in Nanotoxicology and Nanomedicine in the Treatment of Cancer. Toxicol Pathol 2017; 46:4-13. [PMID: 29034767 DOI: 10.1177/0192623317735776] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Multiple applications of nanomaterials have raised concern with regard to their toxicity. With increasing research into nanomaterial safety, mechanisms involved in the toxic effects of nanomaterials have begun to emerge. The importance of nanomaterial-induced lysosomal membrane permeabilization through overloading or direct damage of the lysosomal compartment, resulting in the blockade of autophagosome-lysosome fusion and autophagy dysfunction, as well as inflammasome activation were cited as emerging mechanisms of nanomaterial toxicity. It has recently been proposed that these very mechanisms leading to nanomaterial toxicity may be utilized in nanotherapeutics. This review discusses these nanomaterial-induced mechanisms in detail and how it has been exploited in cancer research. This review also addresses certain considerations that need to be kept in mind when using nanomaterials in therapeutics.
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Affiliation(s)
- Mary Gulumian
- 1 National Institute for Occupational Health (NIOH), Johannesburg, South Africa.,2 Haematology and Molecular Medicine Department, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
| | - Charlene Andraos
- 1 National Institute for Occupational Health (NIOH), Johannesburg, South Africa
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126
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Ning P, Wang W, Chen M, Feng Y, Meng X. Recent advances in mitochondria- and lysosomes-targeted small-molecule two-photon fluorescent probes. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.09.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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127
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Synthetic microparticles conjugated with VEGF 165 improve the survival of endothelial progenitor cells via microRNA-17 inhibition. Nat Commun 2017; 8:747. [PMID: 28963481 PMCID: PMC5622042 DOI: 10.1038/s41467-017-00746-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 07/24/2017] [Indexed: 12/30/2022] Open
Abstract
Several cell-based therapies are under pre-clinical and clinical evaluation for the treatment of ischemic diseases. Poor survival and vascular engraftment rates of transplanted cells force them to work mainly via time-limited paracrine actions. Although several approaches, including the use of soluble vascular endothelial growth factor (sVEGF)—VEGF165, have been developed in the last 10 years to enhance cell survival, they showed limited efficacy. Here, we report a pro-survival approach based on VEGF-immobilized microparticles (VEGF-MPs). VEGF-MPs prolong VEGFR-2 and Akt phosphorylation in cord blood-derived late outgrowth endothelial progenitor cells (OEPCs). In vivo, OEPC aggregates containing VEGF-MPs show higher survival than those treated with sVEGF. Additionally, VEGF-MPs decrease miR-17 expression in OEPCs, thus increasing the expression of its target genes CDKN1A and ZNF652. The therapeutic effect of OEPCs is improved in vivo by inhibiting miR-17. Overall, our data show an experimental approach to improve therapeutic efficacy of proangiogenic cells for the treatment of ischemic diseases. Soluble vascular endothelial growth factor (VEGF) enhances vascular engraftment of transplanted cells but the efficacy is low. Here, the authors show that VEGF-immobilized microparticles prolong survival of endothelial progenitors in vitro and in vivo by downregulating miR17 and upregulating CDKN1A and ZNF652.
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128
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Cai Y, Gui C, Samedov K, Su H, Gu X, Li S, Luo W, Sung HHY, Lam JWY, Kwok RTK, Williams ID, Qin A, Tang BZ. An acidic pH independent piperazine-TPE AIEgen as a unique bioprobe for lysosome tracing. Chem Sci 2017; 8:7593-7603. [PMID: 29568423 PMCID: PMC5848814 DOI: 10.1039/c7sc03515b] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 09/15/2017] [Indexed: 12/13/2022] Open
Abstract
PIP–TPE’s fluorescence turns on blue due to the large viscosity of lysosomes which restricts intramolecular motions but it red-shifts in the bulk.
Lysosomes are involved in a multitude of cellular processes and their dysfunction is associated with various diseases. They are the most acidic organelles (pH 3.8–6.6, size 0.1–1.2 μm) with the highest viscosity (47–190 cP at 25 °C) in the cell. Because of their acidity, pH dependent non-AIE active fluorescent lysosomal probes have been developed that rely on protonation inhibited photoinduced electron transfer (PET). In this work, an acidic pH independent lysosome targetable piperazine–TPE (PIP–TPE) AIEgen has been designed with unique photophysical properties making it a suitable probe for quantifying viscosity. In a non-aggregated state PIP–TPE shows deep-blue emission as opposed to its yellowish-green emission in the bulk. It possesses high specificity for lysosomes with negligible cytotoxicity and good tracing ability due to its better photostability compared to LysoTracker Red. In contrast to most known lysosome probes that rely solely on PET, restriction of intramolecular motion (RIM) due to the larger viscosity inside the lysosomes is the mechanism responsible for PIP–TPE’s fluorescence. PIP–TPE’s high selectivity is attributed to its unique molecular design that features piperazine fragments providing a perfect balance between lipophilicity and polarity.
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Affiliation(s)
- Yuanjing Cai
- Guangdong Innovative Research Team , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China . .,Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Chen Gui
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Kerim Samedov
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , British Columbia , Canada V6T 1Z1
| | - Huifang Su
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Xinggui Gu
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Shiwu Li
- Guangdong Innovative Research Team , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China .
| | - Wenwen Luo
- Guangdong Innovative Research Team , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China .
| | - Herman H Y Sung
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Jacky W Y Lam
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Ryan T K Kwok
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Ian D Williams
- Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
| | - Anjun Qin
- Guangdong Innovative Research Team , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China .
| | - Ben Zhong Tang
- Guangdong Innovative Research Team , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China . .,Department of Chemistry , Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay , Kowloon , Hong Kong , China .
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129
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Martinez-Carreres L, Nasrallah A, Fajas L. Cancer: Linking Powerhouses to Suicidal Bags. Front Oncol 2017; 7:204. [PMID: 28932704 PMCID: PMC5592205 DOI: 10.3389/fonc.2017.00204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/21/2017] [Indexed: 11/26/2022] Open
Abstract
Membrane-bound organelles are integrated into cellular networks and work together for a common goal: regulating cell metabolism, cell signaling pathways, cell fate, cellular maintenance, and pathogen defense. Many of these interactions are well established, but little is known about the interplay between mitochondria and lysosomes, and their deregulation in cancer. The present review focuses on the common signaling pathways of both organelles, as well as the processes in which they both physically interact, their changes under pathological conditions, and the impact on targeting those organelles for treating cancer.
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Affiliation(s)
- Laia Martinez-Carreres
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Anita Nasrallah
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Lluis Fajas
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
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130
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Minnelli C, Cianfruglia L, Laudadio E, Galeazzi R, Pisani M, Crucianelli E, Bizzaro D, Armeni T, Mobbili G. Selective induction of apoptosis in MCF7 cancer-cell by targeted liposomes functionalised with mannose-6-phosphate. J Drug Target 2017; 26:242-251. [PMID: 28795851 DOI: 10.1080/1061186x.2017.1365873] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Liposomes are versatile platforms to carry anticancer drugs in targeted drug delivery; they can be surface modified by different strategies and, when coupled with targeting ligands, are able to increase cellular internalisation and organelle-specific drug delivery. An interesting strategy of antitumoral therapy could involve the use of lysosomotropic ligand-targeted liposomes loaded with molecules, which can induce lysosomal membrane permeabilization (LMP), leakage of cathepsins into the cytoplasm and subsequent apoptosis. We have previously demonstrated the ability of liposomes functionalised with a mannose-6-phosphate to reach lysosomes; in this research we compare the behaviour of M6P-modified and non-functionalised liposomes in MCF7 tumour cell and in HDF normal cells. With this aim, we first demonstrated by Western blotting the overexpression of mannose-6-phosphate/insulin-like growth factor (M6P/IGF-II) receptor in MCF7. Then, we prepared calcein-loaded liposomes and we revealed the increased uptake of M6P-functionalised liposomes in MCF7 cells respect to HDF cells by flow cytometry analysis. Finally, we loaded functionalised and not functionalised liposomes with N-hexanoyl-d-erythro-sphingosine (C6Cer), able to initiate LMP-induced apoptosis; after having studied the stability of both vesicles in the presence of serum by Dynamic Light Scattering and Spectrophotometric turbidity measurements, we showed that ceramide-loaded M6P-liposomes significantly increased apoptosis in MCF7 with respect to HDF cells.
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Affiliation(s)
- Cristina Minnelli
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
| | - Laura Cianfruglia
- b Department of Clinical Sciences, Section of Biochemistry, Biology and Physics , Università Politecnica delle Marche , Ancona , Italy
| | - Emiliano Laudadio
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
| | - Roberta Galeazzi
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
| | - Michela Pisani
- c Department of Materials, Environmental Sciences and Urban Planning , Università Politecnica delle Marche , Ancona , Italy
| | - Emanuela Crucianelli
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
| | - Davide Bizzaro
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
| | - Tatiana Armeni
- b Department of Clinical Sciences, Section of Biochemistry, Biology and Physics , Università Politecnica delle Marche , Ancona , Italy
| | - Giovanna Mobbili
- a Department of Life and Environmental Sciences , Università Politecnica delle Marche , Ancona , Italy
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131
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Wang Q, Yao J, Jin Q, Wang X, Zhu H, Huang F, Wang W, Qiang J, Ni Q. LAMP1 expression is associated with poor prognosis in breast cancer. Oncol Lett 2017; 14:4729-4735. [PMID: 29085473 PMCID: PMC5649640 DOI: 10.3892/ol.2017.6757] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 06/15/2017] [Indexed: 01/20/2023] Open
Abstract
Lysosome associated membrane protein-1 (LAMP1) is a heavily glycosylated lysosomal membrane protein, which is able to protect the lysosomal membrane from intracellular proteolysis. LAMP1 has been implicated in cancer development and progression. However, LAMP1 expression in breast cancer (BC) and its relationship with the clinical parameters of BC has not yet been fully investigated. In the present study, LAMP1 expression in BC was characterized by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) on 20 pairs of fresh-frozen BC and corresponding non-cancerous tissues. In addition, tissue microarray immunohistochemistry (TMA-IHC) was conducted on 143 BC and matched non-cancerous tissue samples. The results of RT-qPCR and TMA-IHC demonstrated that LAMP1 expression in BC tissues was significantly higher than in corresponding non-cancerous tissues. Furthermore, LAMP1 protein expression levels were significantly associated with histological grade (P=0.047), estrogen receptor expression (P=0.003), progesterone receptor expression (P=0.002), molecular classification (P=0.022), lymph node metastasis (P=0.033) and tumor-node-metastasis (TNM) stage (P=0.012). Multivariate analysis using Cox regression models and Kaplan-Meier survival curves demonstrated that LAMP1 expression (P=0.037), molecular classification (P=0.017) and TNM stage (P=0.003) were independent prognostic factors for overall survival. The above data suggested that LAMP1 expression is associated with malignant attributes of BC and may serve as a novel prognostic factor for patients with BC.
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Affiliation(s)
- Qingqing Wang
- Department of General Surgery, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Juan Yao
- Medical School, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China.,Department of Pathology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Qin Jin
- Department of Pathology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Xudong Wang
- Surgical Comprehensive Laboratory, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Huijun Zhu
- Department of Pathology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Fan Huang
- Department of Pathology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Wei Wang
- Department of Pathology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Jianfeng Qiang
- Medical School, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Qichao Ni
- Department of General Surgery, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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132
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Omeprazole promotes carcinogenesis of fore-stomach in mice with co-stimulation of nitrosamine. Oncotarget 2017; 8:70332-70344. [PMID: 29050283 PMCID: PMC5642558 DOI: 10.18632/oncotarget.19696] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 06/19/2017] [Indexed: 12/12/2022] Open
Abstract
Objectives To investigate if oral omeprazole application induces cancers of fore and glandular stomach in mice. Methods A total of 66 eligible male mice were randomly divided into 6 groups, which were treated with control reagent, low (6 mg/kg) and high dose omeprazole (30 mg/kg), N-methyl-N’-nitro-N-nitrosoguanidine (MNNG, 100 mg/L water), and MNNG plus low and high dose omeprazole, respectively. After 24 weeks, concentrations of acid phosphatase (ACP) and N-acetyl-β-D-glucosaminidase(NAG) in serum and spleen was examined, and p21 and mTOR levels in stomach were detected. Results The mouse spleen weight index was smaller in the omeprazole group than the control group, and in the MNNG plus omeprazole groups than the MNNG group. In the fore-stomach, more carcinomas were observed in the MNNG plus omeprazole groups than in the MNNG group. In the glandular stomach, there existed more atypical hyperplasia cases in the MNNG plus omeprazole groups than the MNNG-treated group, and one carcinoma was induced in the MNNG plus high dose omeprazole group. Omeprazole alone caused minor gastric pathological changes. Omeprazole treatment lowered both serum and spleen ACP and NAG levels in both the non-MNNG-treated and MNNG-treated subgroups. In fore-stomach, there existed decreased p21 and mTOR levels in the omeprazole-treated groups than in the control group, and in the MNNG plus omeprazole groups than the MNNG-treated group. Conclusion Omeprazole promotes carcinogenesis of the mouse fore-stomach but not the glandular stomach following treatment with MNNG. Lysosomal hydrolase activity was inhibited and some cancer-associated proteins was dysregulated, which requires further explorations.
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133
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Hu Q, Qin Y, Zhang B, Liang C, Ji S, Shi S, Xu W, Xiang J, Liang D, Ni Q, Yu X, Xu J. FBW7 increases the chemosensitivity of pancreatic cancer cells to gemcitabine through upregulation of ENT1. Oncol Rep 2017; 38:2069-2077. [PMID: 28765935 PMCID: PMC5652962 DOI: 10.3892/or.2017.5856] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 05/24/2017] [Indexed: 02/06/2023] Open
Abstract
F-box and WD repeat domain-containing 7 (FBW7) has been characterized as a tumor suppressor, and its mutation or decreased expression has been observed in many types of human cancers. Our recent studies have uncovered that in pancreatic cancer, the KRAS mutation decreased FBW7 expression through phosphorylation and subsequent ubiquitination. Moreover, FBW7 inhibited aerobic glycolysis in pancreatic cancer via induction of thioredoxin-interacting protein (TXNIP), a mitochondrial localized tumor suppressor. The roles of FBW7 in anti-apoptosis and drug resistance via proteosomal degradation of myeloid cell leukemia-1 (MCL-1), which is an anti-apoptotic factor have been reported. However, the role of FBW7 in the chemotherapeutic resistance of pancreatic cancer to gemcitabine has seldom been reported. In the present study, we demonstrated that overexpression of FBW7 in pancreatic cancer cells rendered increased sensitivity to gemcitabine. Mechanistically, FBW7 promoted gemcitabine sensitivity via upregulation of equilibrative nucleoside transporter 1 (ENT1) at the protein level rather than the transcriptional level. In depth analysis demonstrated that the ENT1 protein level could be increased by lysosome inhibition. Taken together, our results demonstrated that FBW7 could be a target for improving the therapeutic efficacy of gemcitabine by induction of ENT1.
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Affiliation(s)
- Qiangsheng Hu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Yi Qin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Bo Zhang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Chen Liang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Shunrong Ji
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Si Shi
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Wenyan Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Jinfeng Xiang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Dingkong Liang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Quanxing Ni
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Jin Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
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134
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Site-1 protease and lysosomal homeostasis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:2162-2168. [PMID: 28693924 DOI: 10.1016/j.bbamcr.2017.06.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 06/29/2017] [Accepted: 06/30/2017] [Indexed: 11/22/2022]
Abstract
The Golgi-resident site-1 protease (S1P) is a key regulator of cholesterol homeostasis and ER stress responses by converting latent transcription factors sterol regulatory element binding proteins (SREPBs) and activating transcription factor 6 (ATF6), as well as viral glycoproteins to their active forms. S1P is also essential for lysosome biogenesis via proteolytic activation of the hexameric GlcNAc-1-phosphotransferase complex required for modification of newly synthesized lysosomal enzymes with the lysosomal targeting signal, mannose 6-phosphate. In the absence of S1P, the catalytically inactive α/β-subunit precursor of GlcNAc-1-phosphotransferase fails to be activated and results in missorting of newly synthesized lysosomal enzymes, and lysosomal accumulation of non-degraded material, which are biochemical features of defective GlcNAc-1-phosphotransferase subunits and the associated pediatric lysosomal diseases mucolipidosis type II and III. The early embryonic death of S1P-deficient mice and the importance of various S1P-regulated biological processes, including lysosomal homeostasis, cautioned for clinical inhibition of S1P. This article is part of a Special Issue entitled: Proteolysis as a Regulatory Event in Pathophysiology edited by Stefan Rose-John.
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135
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Chen G, Cao Y, Zhang L, Ma H, Shen C, Zhao J. Analysis of long non-coding RNA expression profiles identifies novel lncRNA biomarkers in the tumorigenesis and malignant progression of gliomas. Oncotarget 2017; 8:67744-67753. [PMID: 28978068 PMCID: PMC5620208 DOI: 10.18632/oncotarget.18832] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/01/2017] [Indexed: 11/25/2022] Open
Abstract
Long non-coding RNAs have been shown to be associated with cancer development and progression, demonstrating potential applications as novel diagnostic or prognostic molecular markers in clinical management and treatment. However, the functional significance of lncRNAs in the development and malignant progression of gliomas is still unclear and needed to be further explored. we first obtained genome-wide lncRNA expression profiles in a large cohort of patients with gliomas from the Gene Expression Omnibus database using microarray probes repurposing method and investigated the lncRNA expression patterns during the tumorigenesis and malignant progression of gliomas. By using differential expression analysis, we identified a large number of lncRNAs that were associated with the tumorigenesis and malignant progression of gliomas in the training dataset and showed their robustness in the testing dataset. Subsequently, we identified a novel four-lncRNA signature which was closely related to the prognosis of patients with GBM. The prognostic value of this signature was verified in the test set of 80 patients. Functional analysis suggested that the four lncRNAs associated with survival of patients with GBM may be involved in cancer-related biological processes and pathways and their deregulation may lead to GBM tumorigenesis and progression. These novel lncRNA biomarkers will improve our understanding of the molecular mechanisms during the development and progression of glioma and provide novel diagnostic or prognostic markers and therapeutic targets for gliomas.
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Affiliation(s)
- Gang Chen
- Department of Neurosurgery, Daqing Oilfield General Hospital, Daqing 163001, China
| | - Yanfei Cao
- Department of Clinical Laboratory, Daqing Oilfield General Hospital, Daqing 163001, China
| | - Lina Zhang
- Department of Clinical Laboratory, Daqing Oilfield General Hospital, Daqing 163001, China
| | - Hongxing Ma
- Department of Clinical Laboratory, Daqing Oilfield General Hospital, Daqing 163001, China
| | - Chao Shen
- Department of Clinical Laboratory, Daqing Oilfield General Hospital, Daqing 163001, China
| | - Jiang Zhao
- Department of Neurosurgery, Shanghai Fourth People's Hospital, Shanghai 200081, China
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136
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Kavčič N, Pegan K, Turk B. Lysosomes in programmed cell death pathways: from initiators to amplifiers. Biol Chem 2017; 398:289-301. [DOI: 10.1515/hsz-2016-0252] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/05/2016] [Indexed: 01/19/2023]
Abstract
Abstract
Lysosome is the central organelle for intracellular degradation of biological macromolecules and organelles. The material destined for degradation enters the lysosomes primarily via endocytosis, autophagy and phagocytosis, and is degraded through the concerted action of more than 50 lysosomal hydrolases. However, lysosomes are also linked with numerous other processes, including cell death, inflammasome activation and immune response, as well as with lysosomal secretion and cholesterol recycling. Among them programmed cell death pathways including apoptosis have received major attention. In most of these pathways, cell death was accompanied by lysosomal membrane permeabilization and release of lysosomal constituents with an involvement of lysosomal hydrolases, including the cathepsins. However, it is less clear, whether lysosomal membrane permeabilization is really critical for the initiation of cell death programme(s). Therefore, the role of lysosomal membrane permeabilization in various programmed cell death pathways is reviewed, as well as the mechanisms leading to it.
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137
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Dong B, Song X, Kong X, Wang C, Zhang N, Lin W. A tumor-targeting and lysosome-specific two-photon fluorescent probe for imaging pH changes in living cells. J Mater Chem B 2017; 5:988-995. [PMID: 32263877 DOI: 10.1039/c6tb02957d] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Lysosomal pH is closely related to the metastasis and apoptosis of cancer cells. Detecting lysosomal pH changes in cancer cells could be helpful for analyzing tumor progressions and in-depth study of the roles of lysosomes in tumor invasion and metastasis. Herein, we describe a novel tumor-targeting and lysosome-specific two-photon fluorescent probe (BN-lys) for imaging pH changes for the first time. Biotin was employed as the tumor-targeting module, and morpholine was selected as the lysosome-specific group and the pH site to control the fluorescence by photoinduced electron transfer (PET) mechanism. With a pKa value of 5.36, BN-lys showed a fast and reversible fluorescence response to pH. Under the guidance of the biotin group, BN-lys displayed strong one-photon and two-photon fluorescence responses to lysosomal pH in cancer cells, while it displayed weak fluorescence in normal cells. Furthermore, BN-lys could be applied for the imaging of chloroquine-stimulated lysosomal pH changes in living cells. These features demonstrate that this probe could have practical applications in biological research.
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Affiliation(s)
- Baoli Dong
- Institute of Fluorescent Probes for Biological Imaging, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
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138
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Repnik U, Distefano MB, Speth MT, Ng MYW, Progida C, Hoflack B, Gruenberg J, Griffiths G. LLOMe does not release cysteine cathepsins to the cytosol but inactivates them in transiently permeabilized lysosomes. J Cell Sci 2017; 130:3124-3140. [DOI: 10.1242/jcs.204529] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 07/26/2017] [Indexed: 01/18/2023] Open
Abstract
L-leucyl-L-leucine methyl ester (LLOMe) induces apoptosis, which is thought to be mediated by release of lysosomal cysteine cathepsins from permeabilized lysosomes into the cytosol. Here, we demonstrated in HeLa cells that at apoptotic as well as sub-apoptotic concentrations LLOMe caused rapid and complete lysosomal membrane permeabilization (LMP), evidenced by loss of the proton gradient and release into the cytosol of internalized lysosomal markers below 10K molecular weight. However, there was no evidence for the release of cysteine cathepsins B and L into the cytosol; rather they remained within lysosomes, where they were rapidly inactivated and degraded. LLOMe-induced adverse effects, including LMP, loss of cysteine cathepsin activity, caspase activation and cell death could be reduced by inhibition of cathepsin C, but not by inhibiting cathepsins B and L. When incubated with sub-apoptotic LLOMe concentrations, lysosomes transiently lost protons but annealed and re-acidified within hours. Full lysosomal function required new protein synthesis of cysteine cathepsins and other hydrolyses. Our data argue against release of lysosomal enzymes into the cytosol and their proposed proteolytic signaling during LLOMe-induced apoptosis.
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Affiliation(s)
- Urska Repnik
- Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | | | - Martin Tobias Speth
- Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Matthew Yoke Wui Ng
- Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Cinzia Progida
- Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Bernard Hoflack
- Biotechnology Center, Technical University of Dresden, Tatzberg 47-51, 01307 Dresden, Germany
| | - Jean Gruenberg
- Department of Biochemistry, University of Geneva, Quai Ernest-Ansermet 30, 1211 Geneva 4, Switzerland
| | - Gareth Griffiths
- Department of Biosciences, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
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139
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Abstract
Cells depend on the lysosome for sequestration and degradation of macromolecules in order to maintain metabolic homeostasis. These membrane-enclosed organelles can receive intracellular and extracellular cargo through endocytosis, phagocytosis, and autophagy. Lysosomes establish acidic environments to activate enzymes that are able to break down biomolecules engulfed through these various pathways. Recent advances in methods to study the lysosome have allowed the discovery of extended roles for the lysosome in various diseases, including cancer, making it an attractive and targetable node for therapeutic intervention. This review focuses on key aspects of lysosomal biology in the context of cancer and how these properties can be exploited for the development of new therapeutic strategies. This will provide a contextual framework for how advances in methodology could be applied in future translational research.
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Affiliation(s)
- Colin Fennelly
- Department of Medicine and Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, 777 South Tower PCAM, 34th St. and Civic Center Blvd., Philadelphia, PA, 19104, USA
| | - Ravi K Amaravadi
- Department of Medicine and Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, 777 South Tower PCAM, 34th St. and Civic Center Blvd., Philadelphia, PA, 19104, USA.
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140
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Desmet KLJ, Van Hoeck V, Gagné D, Fournier E, Thakur A, O'Doherty AM, Walsh CP, Sirard MA, Bols PEJ, Leroy JLMR. Exposure of bovine oocytes and embryos to elevated non-esterified fatty acid concentrations: integration of epigenetic and transcriptomic signatures in resultant blastocysts. BMC Genomics 2016; 17:1004. [PMID: 27931182 PMCID: PMC5146907 DOI: 10.1186/s12864-016-3366-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 12/02/2016] [Indexed: 12/30/2022] Open
Abstract
Background Metabolic stress associated with negative energy balance in high producing dairy cattle and obesity in women is a risk factor for decreased fertility. Non-esterified fatty acids (NEFA) are involved in this pathogenesis as they jeopardize oocyte and embryo development. Growing evidence indicates that maternal metabolic disorders can disturb epigenetic programming, such as DNA methylation, in the offspring. Oocyte maturation and early embryo development coincide with methylation changes and both are sensitive to adverse environments. Therefore, we investigated whether elevated NEFA concentrations affect establishment and maintenance of DNA methylation in oocytes and embryos, subsequently altering transcriptomic profiles and developmental competence of resultant blastocysts. Results Bovine oocytes and embryos were exposed to different NEFA concentrations in separate experiments. In the first experiment, oocytes were matured in vitro for 24 h in medium containing: 1) physiological (“BASAL”) concentrations of oleic (OA), palmitic (PA) and stearic (SA) acid or 2) pathophysiological (“HIGH COMBI”) concentrations of OA, PA and SA. In the second experiment, zygotes were cultivated in vitro for 6.5 days under BASAL or HIGH COMBI conditions. Developmental competence was evaluated by assessing cleavage and blastocyst rate. Overall gene expression and DNA methylation of resultant blastocysts were analyzed using microarray. DNA methylation data were re-evaluated by pyrosequencing. HIGH COMBI-exposed oocytes and embryos displayed a lower competence to develop into blastocysts compared to BASAL-exposed counterparts (19.3% compared to 23.2% and 18.2% compared to 25.3%, respectively) (P < 0.05). HIGH COMBI-exposed oocytes and embryos resulted in blastocysts with altered DNA methylation and transcriptomic fingerprints, compared to BASAL-exposed counterparts. Differences in gene expression and methylation were more pronounced after exposure during culture compared to maturation suggesting that zygotes are more susceptible to adverse environments. Main gene networks affected were related to lipid and carbohydrate metabolism, cell death, immune response and metabolic disorders. Conclusions Overall, high variation in methylation between blastocysts made it difficult to draw conclusions concerning methylation of individual genes, although a clear overview of affected pathways was obtained. This may offer clues regarding the high rate of embryonic loss and metabolic diseases during later life observed in offspring from mothers displaying lipolytic disorders.
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Affiliation(s)
- K L J Desmet
- Laboratory of Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Wilrijk, Belgium.
| | - V Van Hoeck
- Laboratory of Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - D Gagné
- Centre de Recherche en Biologie de la Reproduction (CRBR), Département des Sciences Animales, Université Laval, Québec, Canada
| | - E Fournier
- Centre de Recherche en Biologie de la Reproduction (CRBR), Département des Sciences Animales, Université Laval, Québec, Canada
| | - A Thakur
- British Columbia Cancer Agency, University of British Columbia, Vancouver, Canada
| | - A M O'Doherty
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - C P Walsh
- Centre for Molecular Biosciences, School of Biomedical Sciences, University of Ulster, Coleraine, UK
| | - M A Sirard
- Centre de Recherche en Biologie de la Reproduction (CRBR), Département des Sciences Animales, Université Laval, Québec, Canada
| | - P E J Bols
- Laboratory of Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - J L M R Leroy
- Laboratory of Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
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141
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Can 'calpain-cathepsin hypothesis' explain Alzheimer neuronal death? Ageing Res Rev 2016; 32:169-179. [PMID: 27306474 DOI: 10.1016/j.arr.2016.05.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 05/10/2016] [Accepted: 05/19/2016] [Indexed: 01/08/2023]
Abstract
Neurons are highly specialized post-mitotic cells, so their homeostasis and survival depend on the tightly-regulated, continuous protein degradation, synthesis, and turnover. In neurons, autophagy is indispensable to facilitate recycling of long-lived, damaged proteins and organelles in a lysosome-dependent manner. Since lysosomal proteolysis under basal conditions performs an essential housekeeping function, inhibition of the proteolysis exacerbates level of neurodegeneration. The latter is characterized by an accumulation of abnormal proteins or organelles within autophagic vacuoles which reveal as 'granulo-vacuolar degenerations' on microscopy. Heat-shock protein70.1 (Hsp70.1), as a means of molecular chaperone and lysosomal stabilizer, is a potent survival protein that confers neuroprotection against diverse stimuli, but its depletion induces neurodegeneration via autophagy failure. In response to hydroxynonenal generated from linoleic or arachidonic acids by the reactive oxygen species, a specific oxidative injury 'carbonylation' occurs at the key site Arg469 of Hsp70.1. Oxidative stress-induced carbonylation of Hsp70.1, in coordination with the calpain-mediated cleavage, leads to lysosomal destabilization/rupture and release of cathepsins with the resultant neuronal death. Hsp70.1 carbonylation which occurs anywhere in the brain is indispensable for neuronal death, but extent of calpain activation should be more crucial for determining the cell death fate. Importantly, not only acute ischemia during stroke but also chronic ischemia due to ageing may cause calpain activation. Here, role of Hsp70.1-mediated lysosomal rupture is discussed by comparing ischemic and Alzheimer neuronal death. A common neuronal death cascade may exist between cerebral ischemia and Alzheimer's disease.
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142
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Gómez-Sintes R, Ledesma MD, Boya P. Lysosomal cell death mechanisms in aging. Ageing Res Rev 2016; 32:150-168. [PMID: 26947122 DOI: 10.1016/j.arr.2016.02.009] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 02/22/2016] [Accepted: 02/29/2016] [Indexed: 12/14/2022]
Abstract
Lysosomes are degradative organelles essential for cell homeostasis that regulate a variety of processes, from calcium signaling and nutrient responses to autophagic degradation of intracellular components. Lysosomal cell death is mediated by the lethal effects of cathepsins, which are released into the cytoplasm following lysosomal damage. This process of lysosomal membrane permeabilization and cathepsin release is observed in several physiopathological conditions and plays a role in tissue remodeling, the immune response to intracellular pathogens and neurodegenerative diseases. Many evidences indicate that aging strongly influences lysosomal activity by altering the physical and chemical properties of these organelles, rendering them more sensitive to stress. In this review we focus on how aging alters lysosomal function and increases cell sensitivity to lysosomal membrane permeabilization and lysosomal cell death, both in physiological conditions and age-related pathologies.
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Affiliation(s)
- Raquel Gómez-Sintes
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biologicas, CIB-CSIC, C/Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - María Dolores Ledesma
- Department of Molecular Neurobiology, Centro Biologia Molecular Severo Ochoa, CSIC-UAM, C/Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biologicas, CIB-CSIC, C/Ramiro de Maeztu 9, 28040 Madrid, Spain.
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143
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de Mingo Á, de Gregorio E, Moles A, Tarrats N, Tutusaus A, Colell A, Fernandez-Checa JC, Morales A, Marí M. Cysteine cathepsins control hepatic NF-κB-dependent inflammation via sirtuin-1 regulation. Cell Death Dis 2016; 7:e2464. [PMID: 27831566 PMCID: PMC5260902 DOI: 10.1038/cddis.2016.368] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/11/2016] [Accepted: 10/12/2016] [Indexed: 12/18/2022]
Abstract
Sirtuin-1 (SIRT1) regulates hepatic metabolism but its contribution to NF-κB-dependent inflammation has been overlooked. Cysteine cathepsins (Cathepsin B or S, CTSB/S) execute specific functions in physiological processes, such as protein degradation, having SIRT1 as a substrate. We investigated the roles of CTSB/S and SIRT1 in the regulation of hepatic inflammation using primary parenchymal and non-parenchymal hepatic cell types and cell lines. In all cells analyzed, CTSB/S inhibition reduces nuclear p65-NF-κB and κB-dependent gene expression after LPS or TNF through enhanced SIRT1 expression. Accordingly, SIRT1 silencing was sufficient to enhance inflammatory gene expression. Importantly, in a dietary mouse model of non-alcoholic steatohepatitis, or in healthy and fibrotic mice after LPS challenge, cathepsins as well as NF-κB-dependent gene expression are activated. Consistent with the prominent role of cathepsin/SIRT1, cysteine cathepsin inhibition limits NF-κB-dependent hepatic inflammation through the regulation of SIRT1 in all in vivo settings, providing a novel anti-inflammatory therapeutic target in liver disease.
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Affiliation(s)
- Álvaro de Mingo
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Estefanía de Gregorio
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Anna Moles
- Fibrosis Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
| | - Núria Tarrats
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Anna Tutusaus
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Anna Colell
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Jose C Fernandez-Checa
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain.,Research Center for Alcoholic Liver and Pancreatic Diseases, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Albert Morales
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
| | - Montserrat Marí
- Department of Cell Death and Proliferation, IIBB-CSIC/IDIBAPS, Barcelona, Catalonia, Spain
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144
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PIG7 promotes leukemia cell chemosensitivity via lysosomal membrane permeabilization. Oncotarget 2016; 7:4841-59. [PMID: 26716897 PMCID: PMC4826247 DOI: 10.18632/oncotarget.6739] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 11/30/2015] [Indexed: 02/05/2023] Open
Abstract
PIG7 localizes to lysosomal membrane in leukemia cells. Our previous work has shown that transduction of pig7 into a series of leukemia cell lines did not result in either apoptosis or differentiation of most tested cell lines. Interestingly, it did significantly sensitize these cell lines to chemotherapeutic drugs. Here, we further investigated the mechanism underlying pig7-induced improved sensitivity of acute leukemia cells to chemotherapy. Our results demonstrated that the sensitization effect driven by exogenous pig7 was more effective in drug-resistant leukemia cell lines which had lower endogenous pig7 expression. Overexpression of pig7 did not directly activate the caspase apoptotic pathway, but decreased the lysosomal stability. The expression of pig7 resulted in lysosomal membrane permeabilization (LMP) and lysosomal protease (e.g. cathepsin B, D, L) release. Moreover, we also observed increased reactive oxygen species (ROS) and decreased mitochondrial membrane potential (ΔΨm) induced by pig7. Some autophagy markers such as LC3I/II, ATG5 and Beclin-1, and necroptosis maker MLKL were also stimulated. However, intrinsic antagonism such as serine/cysteine protease inhibitors Spi2A and Cystatin C prevented downstream effectors from triggering leukemia cells, which were only on the "verge of apoptosis". When combined with chemotherapy, LMP increased and more proteases were released. Once this process was beyond the limit of intrinsic antagonism, it induced programmed cell death cooperatively via caspase-independent and caspase-dependent pathways.
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145
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Abstract
Lysosomes (or lytic bodies) were so named because they contain high levels of hydrolytic enzymes. Lysosome function and dysfunction have been found to play important roles in human disease, including cancer; however, the ways in which lysosomes contribute to tumorigenesis and cancer progression are still being uncovered. Beyond serving as a cellular recycling center, recent evidence suggests that the lysosome is involved in energy homeostasis, generating building blocks for cell growth, mitogenic signaling, priming tissues for angiogenesis and metastasis formation, and activating transcriptional programs. This review examines emerging knowledge of how lysosomal processes contribute to the hallmarks of cancer and highlights vulnerabilities that might be exploited for cancer therapy.
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Affiliation(s)
- Shawn M Davidson
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; , .,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Matthew G Vander Heiden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; , .,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.,Dana-Farber Cancer Institute, Boston, Massachusetts 02215
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146
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Denamur S, Boland L, Beyaert M, Verstraeten SL, Fillet M, Tulkens PM, Bontemps F, Mingeot-Leclercq MP. Subcellular mechanisms involved in apoptosis induced by aminoglycoside antibiotics: Insights on p53, proteasome and endoplasmic reticulum. Toxicol Appl Pharmacol 2016; 309:24-36. [DOI: 10.1016/j.taap.2016.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 08/20/2016] [Accepted: 08/22/2016] [Indexed: 12/21/2022]
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147
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Pagliero RJ, D'Astolfo DS, Lelieveld D, Pratiwi RD, Aits S, Jaattela M, Martin NI, Klumperman J, Egan DA. Discovery of Small Molecules That Induce Lysosomal Cell Death in Cancer Cell Lines Using an Image-Based Screening Platform. Assay Drug Dev Technol 2016; 14:489-510. [PMID: 27732064 DOI: 10.1089/adt.2016.727] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The lysosomal cell death (LCD) pathway is a caspase 3-independent cell death pathway that has been suggested as a possible target for cancer therapy, making the development of sensitive and specific high-throughput (HT) assays to identify LCD inducers highly desirable. In this study, we report a two-step HT screening platform to reliably identify such molecules. First, using a robust HT primary screen based on propidium iodide uptake, we identified compounds that kill through nonapoptotic pathways. A phenotypic image-based assay using a galectin-3 (Gal-3) reporter was then used to further classify hits based on lysosomal permeabilization, a hallmark of LCD. The identification of permeabilized lysosomes in our image-based assay is not affected by changes in the lysosomal pH, thus resolving an important limitation in currently used methods. We have validated our platform in a screen by identifying 24 LCD inducers, some previously known to induce LCD. Although most LCD inducers were cationic amphiphilic drugs (CADs), we have also identified a non-CAD LCD inducer, which is of great interest in the field. Our data also gave new insights into the biology of LCD, suggesting that lysosomal accumulation and acid sphingomyelinase inhibition are not sufficient or necessary for the induction of LCD. Overall, our results demonstrate a robust HT platform to identify novel LCD inducers that will also be very useful for gaining deeper insights into the molecular mechanism of LCD induction.
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Affiliation(s)
- Romina J Pagliero
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands
| | - Diego S D'Astolfo
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands .,2 KNAW-Hubrecht Institute , Utrecht, the Netherlands
| | - Daphne Lelieveld
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands
| | - Riyona D Pratiwi
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands
| | - Sonja Aits
- 3 Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center , Copenhagen, Denmark
| | - Marja Jaattela
- 3 Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center , Copenhagen, Denmark
| | - Nathaniel I Martin
- 4 Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University , Utrecht, the Netherlands
| | - Judith Klumperman
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands
| | - David A Egan
- 1 Department of Cell Biology, University Medical Center Utrecht (UMCU) , Utrecht, the Netherlands
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148
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Cecarini V, Bonfili L, Cuccioloni M, Mozzicafreddo M, Angeletti M, Keller JN, Eleuteri AM. The fine-tuning of proteolytic pathways in Alzheimer's disease. Cell Mol Life Sci 2016; 73:3433-51. [PMID: 27120560 PMCID: PMC11108445 DOI: 10.1007/s00018-016-2238-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/31/2016] [Accepted: 04/21/2016] [Indexed: 11/28/2022]
Abstract
Several integrated proteolytic systems contribute to the maintenance of cellular homeostasis through the continuous removal of misfolded, aggregated or oxidized proteins and damaged organelles. Among these systems, the proteasome and autophagy play the major role in protein quality control, which is a fundamental issue in non-proliferative cells such as neurons. Disturbances in the functionality of these two pathways are frequently observed in neurodegenerative diseases, like Alzheimer's disease, and reflect the accumulation of protease-resistant, deleterious protein aggregates. In this review, we explored the sophisticated crosstalk between the ubiquitin-proteasome system and autophagy in the removal of the harmful structures that characterize Alzheimer's disease neurons. We also dissected the role of the numerous shuttle factors and chaperones that, directly or indirectly interacting with ubiquitin and LC3, are used for cargo selection and delivery to one pathway or the other.
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Affiliation(s)
- Valentina Cecarini
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy.
| | - Laura Bonfili
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy
| | - Massimiliano Cuccioloni
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy
| | - Matteo Mozzicafreddo
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy
| | - Mauro Angeletti
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy
| | - Jeffrey N Keller
- Pennington Biomedical Research Centre, Louisiana State University System, Baton Rouge, LA, 70808, USA
| | - Anna Maria Eleuteri
- Department of Biosciences and Veterinary Medicine, School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032, Camerino, Italy
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149
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Wilder CL, Walton C, Watson V, Stewart FAA, Johnson J, Peyton SR, Payne CK, Odero-Marah V, Platt MO. Differential cathepsin responses to inhibitor-induced feedback: E-64 and cystatin C elevate active cathepsin S and suppress active cathepsin L in breast cancer cells. Int J Biochem Cell Biol 2016; 79:199-208. [PMID: 27592448 DOI: 10.1016/j.biocel.2016.08.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 08/12/2016] [Accepted: 08/29/2016] [Indexed: 10/21/2022]
Abstract
Cathepsins are powerful proteases, once referred to as the lysosomal cysteine proteases, that have been implicated in breast cancer invasion and metastasis, but pharmaceutical inhibitors have suffered failures in clinical trials due to adverse side effects. Scientific advancement from lysosomotropic to cell impermeable cathepsin inhibitors have improved efficacy in treating disease, but off-target effects have still been problematic, motivating a need to better understand cellular feedback and responses to treatment with cathepsin inhibitors. To address this need, we investigated effects of E-64 and cystatin C, two broad spectrum cathepsin inhibitors, on cathepsin levels intra- and extracellularly in MDA-MB-231 breast cancer cells. Cathepsins S and L had opposing responses to both E-64 and cystatin C inhibitor treatments with paradoxically elevated amounts of active cathepsin S, but decreased amounts of active cathepsin L, as determined by multiplex cathepsin zymography. This indicated cellular feedback to selectively sustain the amounts of active cathepsin S even in the presence of inhibitors with subnanomolar inhibitory constant values. These differences were identified in cellular locations of cathepsins L and S, trafficking for secretion, co-localization with endocytosed inhibitors, and longer protein turnover time for cathepsin S compared to cathepsin L. Together, this work demonstrates that previously underappreciated cellular compensation and compartmentalization mechanisms may sustain elevated amounts of some active cathepsins while diminishing others after inhibitor treatment. This can confound predictions based solely on inhibitor kinetics, and must be better understood to effectively deploy therapies and dosing strategies that target cathepsins to prevent cancer progression.
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Affiliation(s)
- Catera L Wilder
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Charlene Walton
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Valencia Watson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Fermin A A Stewart
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Jade Johnson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Shelly R Peyton
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Christine K Payne
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Valerie Odero-Marah
- Department of Biological Sciences, Clark Atlanta University, Atlanta, GA 30314, USA
| | - Manu O Platt
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA.
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150
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Targeted iron oxide nanoparticles for the enhancement of radiation therapy. Biomaterials 2016; 105:127-135. [PMID: 27521615 DOI: 10.1016/j.biomaterials.2016.07.032] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/08/2016] [Accepted: 07/25/2016] [Indexed: 12/22/2022]
Abstract
To increase the efficacy of radiation, iron oxide nanoparticles can be utilized for their ability to produce reactive oxygen species (ROS). Radiation therapy promotes leakage of electrons from the electron transport chain and leads to an increase in mitochondrial production of the superoxide anion which is converted to hydrogen peroxide by superoxide dismutase. Iron oxide nanoparticles can then catalyze the reaction from hydrogen peroxide to the highly reactive hydroxyl radical. Therefore, the overall aim of this project was to utilize iron oxide nanoparticles conjugated to a cell penetrating peptide, TAT, to escape lysosomal encapsulation after internalization by cancer cells and catalyze hydroxyl radical formation. It was determined that TAT functionalized iron oxide nanoparticles and uncoated iron oxide nanoparticles resulted in permeabilization of the lysosomal membranes. Additionally, mitochondrial integrity was compromised when A549 cells were treated with both TAT-functionalized nanoparticles and radiation. Pre-treatment with TAT-functionalized nanoparticles also significantly increased the ROS generation associated with radiation. A long term viability study showed that TAT-functionalized nanoparticles combined with radiation resulted in a synergistic combination treatment. This is likely due to the TAT-functionalized nanoparticles sensitizing the cells to subsequent radiation therapy, because the nanoparticles alone did not result in significant toxicities.
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