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Li T, Dai C, Lu Q, Tian M. A polarity-responsive lysosomes-nucleus translocation probe for the dual-emissive visualization of cell apoptosis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124272. [PMID: 38603960 DOI: 10.1016/j.saa.2024.124272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
Visualization of cell apoptosis is a critical task playing central roles in the fundamental studies in biology, pathology, and biomedicine. Dual-emissive fluorescent probes are desired molecular tools for study on apoptosis, which however were rarely reported. Herein, utilizing the polarity differences between lysosomes and nucleus, a translocation type of fluorescent probe (NA-S) was developed for the dual-color visualization of cell apoptosis. NA-S was designed to be polarity sensitive, bearing alkalescence group, and with DNA affinity. In living cells, NA-S targeted the lysosomes to give blue fluorescence, which translocated into the nucleus during cell apoptosis to give green emission. Thereby, the cell apoptosis could be visualized with NA-S in dual-emissive manner. With the unique probe, the cell apoptosis induced by oxidative stress, UV irradiation, rotenone, colchicine, and paclitaxel have been successfully visualized.
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Affiliation(s)
- Tianyu Li
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Chun Dai
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Qingqing Lu
- Engineering & Technology Center of Electrochemistry, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
| | - Minggang Tian
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China.
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2
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Xiang L, Lou J, Zhao J, Geng Y, Zhang J, Wu Y, Zhao Y, Tao Z, Li Y, Qi J, Chen J, Yang L, Zhou K. Underlying Mechanism of Lysosomal Membrane Permeabilization in CNS Injury: A Literature Review. Mol Neurobiol 2024:10.1007/s12035-024-04290-6. [PMID: 38888836 DOI: 10.1007/s12035-024-04290-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 06/06/2024] [Indexed: 06/20/2024]
Abstract
Lysosomes play a crucial role in various intracellular pathways as their final destination. Various stressors, whether mild or severe, can induce lysosomal membrane permeabilization (LMP), resulting in the release of lysosomal enzymes into the cytoplasm. LMP not only plays a pivotal role in various cellular events but also significantly contributes to programmed cell death (PCD). Previous research has demonstrated the participation of LMP in central nervous system (CNS) injuries, including traumatic brain injury (TBI), spinal cord injury (SCI), subarachnoid hemorrhage (SAH), and hypoxic-ischemic encephalopathy (HIE). However, the mechanisms underlying LMP in CNS injuries are poorly understood. The occurrence of LMP leads to the activation of inflammatory pathways, increased levels of oxidative stress, and PCD. Herein, we present a comprehensive overview of the latest findings regarding LMP and highlight its functions in cellular events and PCDs (lysosome-dependent cell death, apoptosis, pyroptosis, ferroptosis, and autophagy). In addition, we consolidate the most recent insights into LMP in CNS injury by summarizing and exploring the latest advances. We also review potential therapeutic strategies that aim to preserve LMP or inhibit the release of enzymes from lysosomes to alleviate the consequences of LMP in CNS injury. A better understanding of the role that LMP plays in CNS injury may facilitate the development of strategic treatment options for CNS injury.
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Affiliation(s)
- Linyi Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Junsheng Lou
- Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Jiayi Zhao
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yibo Geng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Jiacheng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yuzhe Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yinuo Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310000, China
| | - Zhichao Tao
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Jianjun Qi
- Department of Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, China.
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China.
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China.
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China.
| | - Liangliang Yang
- School of Pharmaceutical Sciences, Wenzhou Medical University, WenzhouZhejiang, 325035, China.
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China.
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China.
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, 325027, China.
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3
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Wang Y, Lin Q, Liu Y, Li C, Liu Z, Yu X, Wang KN. Lighting Up Nucleolus To Report Mitochondria Damage Using a Mitochondria-to-Nucleolus Migration Probe. Anal Chem 2024; 96:9808-9816. [PMID: 38833718 DOI: 10.1021/acs.analchem.3c05629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Visualization of the mitochondrial state is crucial for tracking cell life processes and diagnosing disease, while fluorescent probes that can accurately assess mitochondrial status are currently scarce. Herein, a fluorescent probe named "SYN" was designed and prepared, which can target mitochondria via the mitochondrial membrane potential. Upon pathology or external stimulation, SYN can be released from the mitochondria and accumulate in the nucleolus to monitor the status of mitochondria. During this process, the brightness of the nucleolus can then serve as an indicator of mitochondrial damage. SYN has demonstrated excellent photostability in live cells as well as an extremely inert fluorescence response to bioactive molecules and the physiological pH environment of live cells. Spectroscopic titration and molecular docking studies have revealed that SYN can be lit up in nucleoli due to the high viscosity of the nucleus and the strong electrostatic interaction with the phosphate backbone of RNA. This probe is expected to be an exceptional tool based on its excellent imaging properties for tracking mitochondrial state in live cells.
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Affiliation(s)
- Yumeng Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Qiaowen Lin
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yang Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Chi Li
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhiqiang Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
| | - Xiaoqiang Yu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Kang-Nan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
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4
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Chao X, Yao D, Chen C, Sheng Z, Zhu B. Tetrabromobisphenol A induces neuronal cytotoxicity by inhibiting PINK1-Parkin-mediated mitophagy via upregulating ATF3 expression. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169175. [PMID: 38065503 DOI: 10.1016/j.scitotenv.2023.169175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 10/30/2023] [Accepted: 12/05/2023] [Indexed: 01/18/2024]
Abstract
Tetrabromobisphenol A (TBBPA), as a widely used brominated flame retardant, has been implicated as a potential neurotoxicant. However, the mechanism of TBBPA-induced neurotoxicity has not been fully elucidated yet. In this study, using mouse hippocampal neuron cell HT22 as the in vitro model, the neuronal cytotoxicity of TBBPA and the mechanism by focusing on mitophagy have been studied. We found that neuronal cytotoxic effects were indeed induced by TBBPA exposure at concentrations of >20 μM for 24 h, including decreased cell viability (to 92.38 % at 20 μM; 18.25 % at 80 μM), enhanced ROS (enhanced 53.26 % at IC50 of 60 μM, compared with that in the control group) and mitochondrial ROS (mtROS) levels (enhanced 24.12 % at 60 μM), reduced mitochondrial membrane potential (MMP) (decreased 33.60 % at 60 μM). As a protective mechanism in cells, autophagy was initiated; however, mitophagy was inhibited, where PINK1 (PINK1-Parkin activation is critical in the depolarized MMP-induced mitophagy) expression was found to be repressed and decreased, further leading to the failure of Parkin recruitment to the damaged mitochondria. Mitophagy activator, nicotinamide mononucleotide (β-NMN) that activates the PINK1-Parkin pathway, could alleviate TBBPA-induced mitophagy deficiency and further reduce the neuronal cytotoxicity, demonstrating that TBBPA-induced PINK1-Parkin-mediated mitophagy deficiency contributed to the neuronal cytotoxicity. Furthermore, we found TBBPA caused the upregulation of Atf3 (activating transcription factor 3) gene transcription and expression levels, alongside reduced Pink1 levels; whereas enhanced Pink1 transcript levels were observed after ATF3 depletion even under TBBPA treatment, demonstrating TBBPA-induced overexpression of ATF3 should be responsible for the reduced PINK1 expression. Therefore, for the first time, here we demonstrate that TBBPA can inhibit PINK1-Parkin-mediated mitophagy via upregulating ATF3 expression, which further contributes to its neuronal cytotoxicity. This study should be able to improve our understanding of the mechanism of TBBPA-induced neuronal cytotoxicity.
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Affiliation(s)
- Xijuan Chao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Dezhi Yao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Chuxuan Chen
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Zhiguo Sheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing 100085, China
| | - Benzhan Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing 100085, China
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5
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Caceres L, Abogunloko T, Malchow S, Ehret F, Merz J, Li X, Sol Mitre L, Magnani N, Tasat D, Mwinyella T, Spiga L, Suchanek D, Fischer L, Gorka O, Colin Gissler M, Hilgendorf I, Stachon P, Rog-Zielinska E, Groß O, Westermann D, Evelson P, Wolf D, Marchini T. Molecular mechanisms underlying NLRP3 inflammasome activation and IL-1β production in air pollution fine particulate matter (PM 2.5)-primed macrophages. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122997. [PMID: 38000727 PMCID: PMC10804998 DOI: 10.1016/j.envpol.2023.122997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/10/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Exposure to air pollution fine particulate matter (PM2.5) aggravates respiratory and cardiovascular diseases. It has been proposed that PM2.5 uptake by alveolar macrophages promotes local inflammation that ignites a systemic response, but precise underlying mechanisms remain unclear. Here, we demonstrate that PM2.5 phagocytosis leads to NLRP3 inflammasome activation and subsequent release of the pro-inflammatory master cytokine IL-1β. Inflammasome priming and assembly was time- and dose-dependent in inflammasome-reporter THP-1-ASC-GFP cells, and consistent across PM2.5 samples of variable chemical composition. While inflammasome activation was promoted by different PM2.5 surrogates, significant IL-1β release could only be observed after stimulation with transition-metal rich Residual Oil Fly Ash (ROFA) particles. This effect was confirmed in primary human monocyte-derived macrophages and murine bone marrow-derived macrophages (BMDMs), and by confocal imaging of inflammasome-reporter ASC-Citrine BMDMs. IL-1β release by ROFA was dependent on the NLRP3 inflammasome, as indicated by lack of IL-1β production in ROFA-exposed NLRP3-deficient (Nlrp3-/-) BMDMs, and by specific NLRP3 inhibition with the pharmacological compound MCC950. In addition, while ROFA promoted the upregulation of pro-inflammatory gene expression and cytokines release, MCC950 reduced TNF-α, IL-6, and CCL2 production. Furthermore, inhibition of TNF-α with a neutralizing antibody decreased IL-1β release in ROFA-exposed BMDMs. Using electron tomography, ROFA particles were observed inside intracellular vesicles and mitochondria, which showed signs of ultrastructural damage. Mechanistically, we identified lysosomal rupture, K+ efflux, and impaired mitochondrial function as important prerequisites for ROFA-mediated IL-1β release. Interestingly, specific inhibition of superoxide anion production (O2•-) from mitochondrial respiratory Complex I, but not III, blunted IL-1β release in ROFA-exposed BMDMs. Our findings unravel the mechanism by which PM2.5 promotes IL-1β release in macrophages and provide a novel link between innate immune response and exposure to air pollution PM2.5.
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Affiliation(s)
- Lourdes Caceres
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Químicas, C1113AAD, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular Prof. Alberto Boveris (IBIMOL), C1113AAD, Buenos Aires, Argentina
| | - Tijani Abogunloko
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany; Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, 79104, Freiburg, Germany
| | - Sara Malchow
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Fabienne Ehret
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany; Faculty of Biology, University of Freiburg, 79104, Freiburg im Breisgau, Germany
| | - Julian Merz
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Xiaowei Li
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Lucia Sol Mitre
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany; Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, 79104, Freiburg, Germany
| | - Natalia Magnani
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Químicas, C1113AAD, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular Prof. Alberto Boveris (IBIMOL), C1113AAD, Buenos Aires, Argentina
| | - Deborah Tasat
- Universidad Nacional de General San Martín, Escuela de Ciencia y Tecnología, B1650, General San Martín, Argentina
| | - Timothy Mwinyella
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Lisa Spiga
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Dymphie Suchanek
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Larissa Fischer
- Faculty of Biology, University of Freiburg, 79104, Freiburg im Breisgau, Germany; Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany
| | - Oliver Gorka
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany
| | - Mark Colin Gissler
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Ingo Hilgendorf
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Peter Stachon
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Eva Rog-Zielinska
- Institute for Experimental Cardiovascular Medicine, University Heart Center, Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Olaf Groß
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany
| | - Dirk Westermann
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany
| | - Pablo Evelson
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Químicas, C1113AAD, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular Prof. Alberto Boveris (IBIMOL), C1113AAD, Buenos Aires, Argentina
| | - Dennis Wolf
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany.
| | - Timoteo Marchini
- Department of Cardiology and Angiology, University Heart Center, University of Freiburg, 79106, Freiburg im Breisgau, Germany; Faculty of Medicine, University of Freiburg, 79110, Freiburg im Breisgau, Germany; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Químicas, C1113AAD, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular Prof. Alberto Boveris (IBIMOL), C1113AAD, Buenos Aires, Argentina
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Pereira THR, de Moura TR, Santos MRM, Zamarioli LDS, Erustes AG, Smaili SS, Pereira GJS, Godoy Netto AVD, Bincoletto C. Palladium (II) compounds containing oximes as promising antitumor agents for the treatment of osteosarcoma: An in vitro and in vivo comparative study with cisplatin. Eur J Med Chem 2024; 264:116034. [PMID: 38103541 DOI: 10.1016/j.ejmech.2023.116034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/24/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023]
Abstract
Drug resistance, evasion of cell death and metastasis are factors that contribute to the low cure rate and disease-free survival in osteosarcomas (OS). In this study, we demonstrated that a new class of oxime-containing organometallic complexes called Pd-BPO (O3) and Pd-BMO (O4) are more cytotoxic than cisplatin (CDDP) for SaOS-2 and U2OS cells using the MTT assay. Annexin-FITC/7-AAD staining demonstrated a greater potential for palladium-oxime complexes to induce death in SaOS-2 cells than CDDP, an event confirmed using the pan-caspase inhibitor Z-VAD-FMK. Compared to CDDP, only palladium-oxime complexes eradicated the clonogenicity of SaOS-2 cells after 7 days of treatment. The involvement of the lysosome-mitochondria axis in the cell death-inducing properties of the complexes was also evaluated. Using LysoTracker Red to label the acidic organelles of SaOS-2 cells treated with the O3 and O4 complexes, a decrease in the fluorescence intensity of this probe was observed in relation to CDDP and the control. Lysosomal membrane permeabilization (LMP) was also induced by the O3 and O4 complexes in an assay using acridine orange (A/O). The greater efficiency of the complexes in depolarizing the mitochondrial membrane compared to SaOS-2 cells treated with CDDP was also observed using TMRE (tetramethyl rhodamine, ethyl ester). For in vivo studies, C. elegans was used and demonstrated that both complexes reduce body bends and pharyngeal pumping after 24 h of treatment to the same extent as CDDP. We conclude that both palladium-oxime complexes are more effective than CDDP in inducing tumor cell death. The toxicity of these complexes to C. elegans was like that induced by CDDP. These results encourage preclinical studies aimed at developing more effective drugs for the treatment of osteosarcoma (OS). Furthermore, we propose palladium-oxime complexes as a new class of antineoplastic agents.
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Affiliation(s)
- Thales Hebert Regiani Pereira
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | | | - Michele Rosana Maia Santos
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Lucas Dos Santos Zamarioli
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Adolfo G Erustes
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Soraya S Smaili
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Gustavo J S Pereira
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | | | - Claudia Bincoletto
- Departamento de Farmacologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
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7
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Eriksson I, Vainikka L, Persson HL, Öllinger K. Real-Time Monitoring of Lysosomal Membrane Permeabilization Using Acridine Orange. Methods Protoc 2023; 6:72. [PMID: 37623923 PMCID: PMC10459729 DOI: 10.3390/mps6040072] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/24/2023] [Accepted: 08/02/2023] [Indexed: 08/26/2023] Open
Abstract
Loss of lysosomal membrane integrity results in leakage of lysosomal hydrolases to the cytosol which might harm cell function and induce cell death. Destabilization of lysosomes often precede apoptotic or necrotic cell death and occur during both physiological and pathological conditions. The weak base acridine orange readily enters cells and accumulates in the acidic environment of lysosomes. Vital staining with acridine orange is a well-proven technique to observe lysosomal destabilization using fluorescence microscopy and flow cytometry. These analyses are, however, time consuming and only adapted for discrete time points, which make them unsuitable for large-scale approaches. Therefore, we have developed a time-saving, high-throughput microplate reader-based method to follow destabilization of the lysosomal membrane in real-time using acridine orange. This protocol can easily be adopted for patient samples since the number of cells per sample is low and the time for analysis is short.
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Affiliation(s)
- Ida Eriksson
- Experimental Pathology, Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden; (L.V.); (K.Ö.)
| | - Linda Vainikka
- Experimental Pathology, Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden; (L.V.); (K.Ö.)
| | - Hans Lennart Persson
- Department of Respiratory Medicine in Linköping, Linköping University, 581 85 Linköping, Sweden;
- Department of Health, Medicine and Caring Sciences, Linköping University, 581 85 Linköping, Sweden
| | - Karin Öllinger
- Experimental Pathology, Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden; (L.V.); (K.Ö.)
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8
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Sahoo S, Pathak S, Kumar A, Nandi D, Chakravarty AR. Lysosome directed red light photodynamic therapy using glycosylated iron-(III) conjugates of boron-dipyrromethene. J Inorg Biochem 2023; 244:112226. [PMID: 37105008 DOI: 10.1016/j.jinorgbio.2023.112226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023]
Abstract
To overcome the drawbacks associated with chemotherapeutic and porphyrin-based photodynamic therapy (PDT) agents, the use of BODIPY (boron-dipyrromethene) scaffold has gained prominence in designing a new generation of photosensitizers-cum-cellular imaging agents. However, their poor cell permeability and limited solubility in aqueous medium inhibits the in-vitro application of their organic form. This necessitates the development of metal-BODIPY conjugates with improved physiological stability and enhanced therapeutic efficacy. We have designed two iron(III)-BODIPY conjugates, [Fe(L1/2)(L3)Cl] derived from benzyl-dipicolylamine and its glycosylated analogue along with a BODIPY-tagged catecholate. The complexes showed intense absorption bands (ε ∼ 55,000 M-1 cm-1) and demonstrated apoptotic PDT activity upon red-light irradiation (30 J/cm2, 600-720 nm). The complex with singlet oxygen quantum yield value of ∼0.34 gave sub-micromolar IC50 (half-maximal inhibitory concentration) value (∼0.08 μM) in both HeLa and H1299 cancer cells with a photocytotoxicity index value of >1200. Both the complexes were found to have significantly lower cytotoxic effects in non-cancerous HPL1D (human peripheral lung epithelial) cells. Singlet oxygen was determined to be the prime reactive oxygen species (ROS) responsible for cell damage from pUC19 DNA photo-cleavage studies, 1,3-diphenylisobenzofuran and SOSG (Singlet Oxygen Sensor Green) assays. Cellular imaging studies showed excellent fluorescence from complex 2 within 4 h, with localization in lysosomes. Significant drug accumulation into the core of 3D multicellular tumor spheroids was observed within 8 h from intense in-vitro emission. The complexes exemplify iron-based targeted PDT agents and show promising results as potential transition metal-based drugs for ROS mediated red light photocytotoxicity with low dosage requirement.
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Affiliation(s)
- Somarupa Sahoo
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Sanmoy Pathak
- Department of Biochemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Arun Kumar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Dipankar Nandi
- Department of Biochemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India.
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India.
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Sun C, Cao N, Wang Q, Liu N, Yang T, Li S, Pan L, Yao J, Zhang L, Liu M, Zhang G, Xiao X, Liu C. Icaritin induces resolution of inflammation by targeting cathepsin B to prevents mice from ischemia-reperfusion injury. Int Immunopharmacol 2023. [DOI: 10.1016/j.intimp.2023.109850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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10
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Implication of Vegetable Oil-Derived Hydroxynonenal in the Lysosomal Cell Death for Lifestyle-Related Diseases. Nutrients 2023; 15:nu15030609. [PMID: 36771317 PMCID: PMC9921130 DOI: 10.3390/nu15030609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/27/2023] Open
Abstract
Lysosomes are membrane-bound vesicular structures that mediate degradation and recycling of damaged macromolecules and organelles within the cell. For ensuring the place of degradation within the acidic organelle, the integrity of the lysosomal-limiting membrane is critical in order to not injure the cell. As lysosomes fade away in response to acute intense insults or long-term mild insults, dissolving lysosomes are hardly detected during the phase of cell degeneration. If observed at the right time, however, lysosomal membrane rupture/permeabilization can be detected using an electron microscope. In both the experimental and clinical materials, here the author reviewed electron microphotographs showing disintegrity of the lysosomal-limiting membrane. Regardless of insults, cell types, organs, diseases, or species, leakage of lysosomal content occurred either by the apparent disruption of the lysosomal membrane (rupture) and/or through the ultrastructurally blurred membrane (permeabilization). Since lysosomal rupture occurs in the early phase of necrotic cell death, it is difficult to find vivid lysosomes after the cell death or disease are completed. A lipid peroxidation product, 4-hydroxy-2-nonenal (hydroxynonenal), is incorporated into the serum by the intake of ω-6 polyunsaturated fatty acid-rich vegetable oils (exogenous), and/or is generated by the peroxidation of membrane lipids due to the oxidative stress (intrinsic). Exogenous and intrinsic hydroxynonenal may synergically oxidize the representative cell stress protein Hsp70.1, which has dual functions as a 'chaperone protein' and 'lysosomal stabilizer'. Hydroxynonenal-mediated carbonylation of Hsp70.1 facilitates calpain-mediated cleavage to induce lysosomal membrane rupture and the resultant cell death. Currently, vegetable oils such as soybean and canola oils are the most widely consumed cooking oils at home and in restaurants worldwide. Accordingly, high linoleic acid content may be a major health concern, because cells can become damaged by its major end product, hydroxynonenal. By focusing on dynamic changes of the lysosomal membrane integrity at the ultrastructural level, implications of its rupture/permeabilization on cell death/degeneration were discussed as an etiology of lifestyle-related diseases.
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11
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Youden B, Jiang R, Carrier AJ, Servos MR, Zhang X. A Nanomedicine Structure-Activity Framework for Research, Development, and Regulation of Future Cancer Therapies. ACS NANO 2022; 16:17497-17551. [PMID: 36322785 DOI: 10.1021/acsnano.2c06337] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Despite their clinical success in drug delivery applications, the potential of theranostic nanomedicines is hampered by mechanistic uncertainty and a lack of science-informed regulatory guidance. Both the therapeutic efficacy and the toxicity of nanoformulations are tightly controlled by the complex interplay of the nanoparticle's physicochemical properties and the individual patient/tumor biology; however, it can be difficult to correlate such information with observed outcomes. Additionally, as nanomedicine research attempts to gradually move away from large-scale animal testing, the need for computer-assisted solutions for evaluation will increase. Such models will depend on a clear understanding of structure-activity relationships. This review provides a comprehensive overview of the field of cancer nanomedicine and provides a knowledge framework and foundational interaction maps that can facilitate future research, assessments, and regulation. By forming three complementary maps profiling nanobio interactions and pathways at different levels of biological complexity, a clear picture of a nanoparticle's journey through the body and the therapeutic and adverse consequences of each potential interaction are presented.
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Affiliation(s)
- Brian Youden
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
| | - Runqing Jiang
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
- Department of Medical Physics, Grand River Regional Cancer Centre, Kitchener, Ontario N2G 1G3, Canada
| | - Andrew J Carrier
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
| | - Xu Zhang
- Department of Biology, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
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12
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Chang SH, Lin PY, Wu TK, Hsu CS, Huang SW, Li ZY, Liu KT, Kao JK, Chen YJ, Wong TW, Wu CY, Shieh JJ. Imiquimod-induced ROS production causes lysosomal membrane permeabilization and activates caspase-8-mediated apoptosis in skin cancer cells. J Dermatol Sci 2022; 107:142-150. [PMID: 36075780 DOI: 10.1016/j.jdermsci.2022.08.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 08/12/2022] [Accepted: 08/23/2022] [Indexed: 10/15/2022]
Abstract
BACKGROUND Lysosomal cell death is induced by lysosomal membrane permeabilization (LMP) and the subsequent release of lysosomal proteolytic enzymes, including cathepsins (CTSs), which results in mitochondrial dysfunction and apoptosis. Imiquimod (IMQ), a synthetic TLR7 ligand, has both antiviral and antitumor activity against various skin malignancies in clinical treatment. Previously, we demonstrated IMQ not only caused lysosomal dysfunction but also triggered lysosome biogenesis to achieve lysosomal adaptation in cancer cells. OBJECTIVE To determine whether lysosomes are involved in IMQ-induced apoptosis. METHODS The human skin cancer cell lines BCC, A375 and mouse melanoma cell line B16F10 were used in all experiments. Cell death was determined by the Cell Counting Kit-8 (CCK-8) assay and DNA content assay. Protein expression was determined by immunoblotting. Caspase-8 activity was assessed using a fluorescence caspase-8 kit and determined by flow cytometry and confocal microscopy. RESULTS IMQ not only induced lysosome damage but also abrogated lysosome function in skin cancer cells. IMQ-induced caspase-8 activation contributed to the processes of lysosomal cell death. Moreover, the use of ROS scavengers significantly abolished caspase-8 activation and inhibited IMQ-induced LMP. Additionally, pharmacological inhibition of CTSD not only abrogated caspase-8 activation but also rescued IMQ-induced cell death. Finally, lysosome-alkalizing agents enhanced the cytotoxicity of IMQ in vitro and in vivo. CONCLUSIONS IMQ-induced ROS accumulation promotes LMP, releases CTSs into the cytosol, stimulates caspase-8 activation and finally causes lysosomal cell death. Lysosomal cell death and the CTSD/caspase-8 axis may play a crucial role in IMQ-induced cell death.
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Affiliation(s)
- Shu-Hao Chang
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Pei-Ying Lin
- Center for Cell Therapy and Translation Research, China Medical University Hospital, Taichung, Taiwan
| | - Tsai-Kun Wu
- Division of Renal Medicine, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan; Post Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chien-Sheng Hsu
- Frontier Molecular Medical Research Center in Children, Changhua Christian Children Hospital, Changhua County, Taiwan
| | - Shi-Wei Huang
- Center for Cell Therapy and Translation Research, China Medical University Hospital, Taichung, Taiwan
| | - Zheng-Yi Li
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Kuang-Ting Liu
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan; Department of Pathology & Laboratory Medicine, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan
| | - Jun-Kai Kao
- Post Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan; Frontier Molecular Medical Research Center in Children, Changhua Christian Children Hospital, Changhua County, Taiwan
| | - Yi-Ju Chen
- Post Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan; Department of Dermatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Tak-Wah Wong
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chun-Ying Wu
- Division of Gastroenterology and Hepatology, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Jeng-Jer Shieh
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan; Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan; Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan.
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13
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Berg AL, Rowson-Hodel A, Wheeler MR, Hu M, Free SR, Carraway KL. Engaging the Lysosome and Lysosome-Dependent Cell Death in Cancer. Breast Cancer 2022. [DOI: 10.36255/exon-publications-breast-cancer-lysosome] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Overexpression of V-ATPase B2 attenuates lung injury/fibrosis by stabilizing lysosomal membrane permeabilization and increasing collagen degradation. Exp Mol Med 2022; 54:662-672. [PMID: 35624153 PMCID: PMC9166714 DOI: 10.1038/s12276-022-00776-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/02/2022] [Accepted: 03/10/2022] [Indexed: 11/29/2022] Open
Abstract
Excessive oxidative stress causes lysosomal membrane permeabilization (LMP), which leads to cell death. Vacuolar ATPase (V-ATPase) is the enzyme responsible for pumping H+ into the cytosol and thus maintaining intracellular pH. Previously, we reported that V-ATPase B2 subunit expression is upregulated in the TiO2-exposed lung epithelium. We investigated the role of the lysosomal V-ATPase B2 subunit in oxidative stress-induced alveolar epithelial cell death and in an experimental lung injury/fibrosis model. Overexpression of V-ATPase B2 increased lysosomal pH and lysosomal activities in the cells. In the presence of H2O2, overexpression of V-ATPase B2 increased survival, and silencing of V-ATPase B2 dramatically increased cell death. Overexpression of V-ATPase B2 diminished H2O2-triggered LMP, as evidenced by a reduction in acridine orange staining and leakage of cathepsin D from the lysosome to the cytoplasm. In addition, V-ATPase B2-overexpressing macrophages exhibited significantly enhanced uptake and degradation of collagen. V-ATPase B2-overexpressing transgenic mice showed significant inhibition of the bleomycin-induced increases in lung inflammation and fibrosis. We conclude that V-ATPase B2 is critical for maintaining lysosomal activities against excessive oxidative stress by stabilizing LMP. Our findings reveal a previously unknown role of this V-ATPase subunit in a lung injury and fibrosis model. An enzyme involved in maintaining the correct pH inside the lysosome, an organelle involved in disposal of cellular waste, also plays a critical role in preventing lung injury. Using human lung cells and mouse models of lung fibrosis, a team led by Sung Woo Park from Soonchunhyang University Bucheon Hospital, South Korea, showed that a overexpression of subunit of the vacuolar ATPase enzyme B2, which pumps protons into cellular compartments to create more acidic environments, helps to boost lysosomal activities that lead to prevent oxidative stress-induced cell death and alleviate experimental lung injury/fibrosis. In addition, V-ATPase B2 overexpressed macrophages increased collagen uptake and degradation activities. The findings point to the vacuolar ATPase, and its B2 subunit in particular, as a promising drug target for future treatments of pulmonary fibrosis.
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15
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Fortibui MM, Jang M, Lee S, Ryoo IJ, Ahn JS, Ko SK, Kim J. Near-Infrared Fluorescence Probe for Specific Detection of Acetylcholinesterase and Imaging in Live Cells and Zebrafish. ACS APPLIED BIO MATERIALS 2022; 5:2232-2239. [PMID: 35446530 DOI: 10.1021/acsabm.2c00084] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Acetylcholinesterase (AChE) is a pivotal enzyme that is closely related with multiple neurological diseases, such as brain disorders or alterations in the neurotransmission and cancer. The development of convenient methods for imaging AChE activity in biological samples is very important to understand its mechanisms and functions in a living system. Herein, a fluorescent probe exhibiting emission in the near-infrared (NIR) region is developed to detect AChE and visualize biological AChE activities. This probe exhibits a quick response time, reasonable detection limit, and a large Stokes shift accompanied by the NIR emission. The probe has much better reactivity toward AChE than butyrylcholinesterase, which is one of the significant interfering substances. The outstanding specificity of the probe is proved by cellular imaging AChE activity and successful mapping in different regions of zebrafish. Such an effective probe can greatly contribute to ongoing efforts to design emission probes that have distinct properties to assay AChE in biological systems.
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Affiliation(s)
- Maxine Mambo Fortibui
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Mina Jang
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Korea
| | - Sohyun Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - In-Ja Ryoo
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Korea
| | - Jong Seog Ahn
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Korea
| | - Sung-Kyun Ko
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Korea
| | - Jinheung Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
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Usategui-Martín R, Pérez-Castrillón JL, Mansego ML, Lara-Hernández F, Manzano I, Briongos L, Abadía-Otero J, Martín-Vallejo J, García-García AB, Martín-Escudero JC, Chaves FJ. Association between genetic variants in oxidative stress-related genes and osteoporotic bone fracture. The Hortega follow-up study. Gene 2022; 809:146036. [PMID: 34688818 DOI: 10.1016/j.gene.2021.146036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 11/20/2022]
Abstract
The most widely accepted etiopathogenesis hypothesis of the origin of osteoporosis and its complications is that they are a consequence of bone aging and other environmental factors, together with a genetic predisposition. Evidence suggests that oxidative stress is crucial in bone pathologies associated with aging. The aim of this study was to determine whether genetic variants in oxidative stress-related genes modified the risk of osteoporotic fracture. We analysed 221 patients and 354 controls from the HORTEGA sample after 12-14 years of follow up. We studied the genotypic and allelic distribution of 53 SNPs in 24 genes involved in oxidative stress. The results showed that being a carrier of the variant allele of the SNP rs4077561 within TXNRD1 was the principal genetic risk factor associated with osteoporotic fracture and that variant allele of the rs1805754 M6PR, rs4964779 TXNRD1, rs406113 GPX6, rs2281082 TXN2 and rs974334 GPX6 polymorphisms are important genetic risk factors for fracture. This study provides information on the genetic factors associated with oxidative stress which are involved in the risk of osteoporotic fracture and reinforces the hypothesis that genetic factors are crucial in the etiopathogenesis of osteoporosis and its complications.
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Affiliation(s)
- Ricardo Usategui-Martín
- IOBA, University of Valladolid, Valladolid. Spain; Cooperative Health Network for Research (RETICS), Oftared, National Institute of Health Carlos III, ISCIII, Madrid. Spain.
| | - José Luis Pérez-Castrillón
- Department of Internal Medicine, Rio Hortega Universitary Hospital, Valladolid, Spain; Department of Medicine. Faculty of Medicine. University of Valladolid, Valladolid, Spain.
| | - María L Mansego
- Genomic and Genetic Diagnosis Unit, INCLIVA Biomedical Research Institute, Valencia, Spain; Department of Bioinformatics. Making Genetics S.L. Pamplona. Spain
| | | | - Iris Manzano
- Genomic and Genetic Diagnosis Unit, INCLIVA Biomedical Research Institute, Valencia, Spain
| | - Laisa Briongos
- Department of Internal Medicine, Rio Hortega Universitary Hospital, Valladolid, Spain; Department of Medicine. Faculty of Medicine. University of Valladolid, Valladolid, Spain
| | - Jesica Abadía-Otero
- Department of Internal Medicine, Rio Hortega Universitary Hospital, Valladolid, Spain
| | - Javier Martín-Vallejo
- Department of Statistics. University of Salamanca. Salamanca Biomedical Research Institute (IBSAL), Salamanca. Spain
| | - Ana B García-García
- Genomic and Genetic Diagnosis Unit, INCLIVA Biomedical Research Institute, Valencia, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Madrid. Spain
| | - Juan Carlos Martín-Escudero
- Department of Internal Medicine, Rio Hortega Universitary Hospital, Valladolid, Spain; Department of Medicine. Faculty of Medicine. University of Valladolid, Valladolid, Spain
| | - Felipe J Chaves
- Genomic and Genetic Diagnosis Unit, INCLIVA Biomedical Research Institute, Valencia, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Madrid. Spain
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17
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Yu Z, Li X, Lu X, Guo Y. Rational construction of a novel probe for the rapid detection of butyrylcholinesterase stress changes in apoptotic cells. NEW J CHEM 2022. [DOI: 10.1039/d2nj01678h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The occurrence of numerous neurodegenerative diseases is associated with abnormal levels of butyrylcholinesterase (BChE).
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Affiliation(s)
- Zhenqing Yu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Xiang Li
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiaofeng Lu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Yong Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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18
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Halaby R. Natural Products Induce Lysosomal Membrane Permeabilization as an Anticancer Strategy. MEDICINES 2021; 8:medicines8110069. [PMID: 34822366 PMCID: PMC8624533 DOI: 10.3390/medicines8110069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 11/26/2022]
Abstract
Cancer is a global health and economic issue. The majority of anticancer therapies become ineffective due to frequent genomic turnover and chemoresistance. Furthermore, chemotherapy and radiation are non-specific, killing all rapidly dividing cells including healthy cells. In this review, we examine the ability of some natural products to induce lysosomal-mediated cell death in neoplastic cells as a way to kill them more specifically than conventional therapies. This list is by no means exhaustive. We postulate mechanisms to explain lysosomal membrane permeabilization and its role in triggering cell death in cancer cells.
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Affiliation(s)
- Reginald Halaby
- Department of Biology, Montclair State University, Montclair, NJ 07043, USA
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19
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AIE materials for lysosome imaging. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021. [PMID: 34749972 DOI: 10.1016/bs.pmbts.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
The aggregation-induced emission (AIE) active bioprobes are known for their high photostability and extraordinary signal to noise ratio. In view of this, research efforts to synthesize new AIE bioimaging probes are at an incredible speed. In this chapter, we have summarized the various lysosome specific AIE active "turn-on" bioprobes having applications in lysosome imaging, monitoring of lysosome bioactivity and evaluation of their therapeutic effects. By discussing their design and operational mechanisms, we hope to provide more insight into designing new AIE bioprobes for specific sensing and imaging of lysosome having flexibility for broad range of biomedical applications.
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20
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Saini H, Sharma H, Mukherjee S, Chowdhury S, Chowdhury R. Verteporfin disrupts multiple steps of autophagy and regulates p53 to sensitize osteosarcoma cells. Cancer Cell Int 2021; 21:52. [PMID: 33446200 PMCID: PMC7807844 DOI: 10.1186/s12935-020-01720-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023] Open
Abstract
Background Osteosarcoma (OS) is a malignant tumor of the bone mostly observed in children and adolescents. The current treatment approach includes neoadjuvant and adjuvant chemotherapy; however, drug resistance often hinders therapy in OS patients. Also, the post-relapse survival of OS patients is as low as 20%. We therefore planned to understand the molecular cause for its poor prognosis and design an appropriate therapeutic strategy to combat the disease. Methods We analyzed OS patient dataset from Gene Expression Omnibus (GEO) and identified the differentially expressed genes and the top deregulated pathways in OS. Subsequently, drugs targeting the major de-regulated pathways were selected and the following assays were conducted- MTT assay to assess cytotoxicity of drugs in OS cells; immunoblotting and immunostaining to analyze key protein expression and localization after drug treatment; LysoTracker staining to monitor lysosomes; Acridine Orange to label acidic vesicles; and DCFDA to measure Reactive Oxygen Species (ROS). Results The differential gene expression analysis from OS patient dataset implicated the striking involvement of cellular processes linked to autophagy and protein processing in the development of OS. We therefore selected the FDA approved drugs, chloroquine (CQ) and verteporfin (VP) known for autophagy inhibitory and proteotoxic functions to explore against OS. Importantly, VP, but not CQ, showed an extensive dose-dependent cytotoxicity. It resulted in autophagy disruption at multiple steps extending from perturbation of early autophagic processes, inhibition of autophagic flux to induction of lysosomal instability. Interestingly, VP treated protein lysates showed a ROS-dependent high molecular weight (HMW) band when probed for P62 and P53 protein. Further, VP triggered accumulation of ubiquitinated proteins as well. Since VP had a pronounced disruptive effect on cellular protein homeostasis, we explored the possibility of simultaneous inhibition of the ubiquitin-proteasomal system (UPS) by MG-132 (MG). Addition of a proteasomal inhibitor significantly aggravated VP induced cytotoxicity. MG co-treatment also led to selective targeting of P53 to the lysosomes. Conclusion Herein, we propose VP and MG induce regulation of autophagy and protein homeostasis which can be exploited as an effective therapeutic strategy against osteosarcoma.
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Affiliation(s)
- Heena Saini
- Department of Biological Sciences, BITS Pilani, Pilani Campus, Rajasthan, 333031, India
| | - Harshita Sharma
- Department of Biological Sciences, BITS Pilani, Pilani Campus, Rajasthan, 333031, India
| | - Sudeshna Mukherjee
- Department of Biological Sciences, BITS Pilani, Pilani Campus, Rajasthan, 333031, India
| | - Shibasish Chowdhury
- Department of Biological Sciences, BITS Pilani, Pilani Campus, Rajasthan, 333031, India
| | - Rajdeep Chowdhury
- Department of Biological Sciences, BITS Pilani, Pilani Campus, Rajasthan, 333031, India.
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Li C, Hu W, Wang J, Song X, Xiong X, Liu Z. A highly specific probe for the imaging of inflammation-induced endogenous nitric oxide produced during the stroke process. Analyst 2020; 145:6125-6129. [PMID: 32851996 DOI: 10.1039/d0an00824a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, a turn-on two-photon fluorescent probe (Lyso-TP-NO) for nitric oxide (NO) was developed. It was synthesized using 4-ethylamino-1,8-naphthalimide as the two-photon fluorophore and N-methylaniline moiety as the reaction site. The probe and fluorophore were tested under one- and two-photon modes. The fluorescence intensity of the system was enhanced 23.1-fold after reacting with NO in the one-photon mode. However, the maximal two-photon action cross-section value of 200 GM was obtained under excitation at 840 nm. The probe exhibits high selectivity and sensitivity over other reactive oxygen species (ROS) and reactive nitrogen species (RNS), with a detection limit as low as 3.3 nM. The two-photon fluorescence imaging of living cells and mouse brain tissues can capture inflammation-induced endogenous NO production in lysosomes during stroke occurrence.
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Affiliation(s)
- Chenchen Li
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, China.
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22
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Ma Y, Gao W, Ma S, Liu Y, Lin W. Observation of the Elevation of Cholinesterase Activity in Brain Glioma by a Near-Infrared Emission Chemsensor. Anal Chem 2020; 92:13405-13410. [DOI: 10.1021/acs.analchem.0c02770] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yanyan Ma
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China
| | - Wenjie Gao
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China
| | - Shihan Ma
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China
| | - Yongyuan Liu
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Jinan, Shandong 250022, P. R. 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 250022, P. R. China
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23
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Yamashima T, Ota T, Mizukoshi E, Nakamura H, Yamamoto Y, Kikuchi M, Yamashita T, Kaneko S. Intake of ω-6 Polyunsaturated Fatty Acid-Rich Vegetable Oils and Risk of Lifestyle Diseases. Adv Nutr 2020; 11:1489-1509. [PMID: 32623461 PMCID: PMC7666899 DOI: 10.1093/advances/nmaa072] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/30/2019] [Accepted: 05/26/2020] [Indexed: 12/28/2022] Open
Abstract
Although excessive consumption of deep-fried foods is regarded as 1 of the most important epidemiological factors of lifestyle diseases such as Alzheimer's disease, type 2 diabetes, and obesity, the exact mechanism remains unknown. This review aims to discuss whether heated cooking oil-derived peroxidation products cause cell degeneration/death for the occurrence of lifestyle diseases. Deep-fried foods cooked in ω-6 PUFA-rich vegetable oils such as rapeseed (canola), soybean, sunflower, and corn oils, already contain or intrinsically generate "hydroxynonenal" by peroxidation. As demonstrated previously, hydroxynonenal promotes carbonylation of heat-shock protein 70.1 (Hsp70.1), with the resultant impaired ability of cells to recycle damaged proteins and stabilize the lysosomal membrane. Until now, the implication of lysosomal/autophagy failure due to the daily consumption of ω-6 PUFA-rich vegetable oils in the progression of cell degeneration/death has not been reported. Since the "calpain-cathepsin hypothesis" was formulated as a cause of ischemic neuronal death in 1998, its relevance to Alzheimer's neuronal death has been suggested with particular attention to hydroxynonenal. However, its relevance to cell death of the hypothalamus, liver, and pancreas, especially related to appetite/energy control, is unknown. The hypothalamus senses information from both adipocyte-derived leptin and circulating free fatty acids. Concentrations of circulating fatty acid and its oxidized form, especially hydroxynonenal, are increased in obese and/or aged subjects. As overactivation of the fatty acid receptor G-protein coupled receptor 40 (GPR40) in response to excessive or oxidized fatty acids in these subjects may lead to the disruption of Ca2+ homeostasis, it should be evaluated whether GPR40 overactivation contributes to diverse cell death. Here, we describe the molecular implication of ω-6 PUFA-rich vegetable oil-derived hydroxynonenal in lysosomal destabilization leading to cell death. By oxidizing Hsp70.1, both the dietary PUFA- (exogenous) and the membrane phospholipid- (intrinsic) peroxidation product "hydroxynonenal," when combined, may play crucial roles in the occurrence of diverse lifestyle diseases including Alzheimer's disease.
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Affiliation(s)
| | | | | | | | - Yasuhiko Yamamoto
- Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Vitamin B 12b Enhances the Cytotoxicity of Diethyldithiocarbamate in a Synergistic Manner, Inducing the Paraptosis-Like Death of Human Larynx Carcinoma Cells. Biomolecules 2020; 10:biom10010069. [PMID: 31906414 PMCID: PMC7023477 DOI: 10.3390/biom10010069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 12/29/2019] [Accepted: 12/30/2019] [Indexed: 11/24/2022] Open
Abstract
We have shown that hydroxycobalamin (vitamin B12b) increases the toxicity of diethyldithiocarbamate (DDC) to tumor cells by catalyzing the formation of disulfiram (DSF) oxi-derivatives. The purpose of this study was to elucidate the mechanism of tumor cell death induced by the combination DDC + B12b. It was found that cell death induced by DDC + B12b differed from apoptosis, autophagy, and necrosis. During the initiation of cell death, numerous vacuoles formed from ER cisterns in the cytoplasm, and cell death was partially suppressed by the inhibitors of protein synthesis and folding, the IP3 receptor inhibitor as well as by thiols. At this time, a short-term rise in the expression of ER-stress markers BiP and PERK with a steady increase in the expression of CHOP were detected. After the vacuolization of the cytoplasm, functional disorders of mitochondria and an increase in the generation of superoxide anion in them occurred. Taken together, the results obtained indicate that DDC and B12b used in combination exert a synergistic toxic effect on tumor cells by causing severe ER stress, extensive ER vacuolization, and inhibition of apoptosis, which ultimately leads to the induction of paraptosis-like cell death.
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Iron homeostasis and oxidative stress: An intimate relationship. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:118535. [DOI: 10.1016/j.bbamcr.2019.118535] [Citation(s) in RCA: 189] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/23/2019] [Accepted: 08/18/2019] [Indexed: 02/07/2023]
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Yazdimamaghani M, Moos PJ, Dobrovolskaia MA, Ghandehari H. Genotoxicity of amorphous silica nanoparticles: Status and prospects. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2019; 16:106-125. [PMID: 30529789 PMCID: PMC6455809 DOI: 10.1016/j.nano.2018.11.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 11/19/2018] [Accepted: 11/27/2018] [Indexed: 12/11/2022]
Abstract
Amorphous silica nanoparticles (SNPs) are widely used in biomedical applications and consumer products. Little is known, however, about their genotoxicity and potential to induce gene expression regulation. Despite recent efforts to study the underlying mechanisms of genotoxicity of SNPs, inconsistent results create a challenge. A variety of factors determine particle-cell interactions and underlying mechanisms. Further, high-throughput studies are required to carefully assess the impact of silica nanoparticle physicochemical properties on induction of genotoxic response in different cell lines and animal models. In this article, we review the strategies available for evaluation of genotoxicity of nanoparticles (NPs), survey current status of silica nanoparticle gene alteration and genotoxicity, discuss particle-mediated inflammation as a contributing factor to genotoxicity, identify existing gaps and suggest future directions for this research.
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Affiliation(s)
- Mostafa Yazdimamaghani
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, United States; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, United States
| | - Philip J Moos
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, United States; Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, United States
| | - Marina A Dobrovolskaia
- Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Maryland, United States
| | - Hamidreza Ghandehari
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, United States; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, United States; Department of Bioengineering, University of Utah, Salt Lake City, Utah, United States.
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27
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Murschhauser A, Röttgermann PJF, Woschée D, Ober MF, Yan Y, Dawson KA, Rädler JO. A high-throughput microscopy method for single-cell analysis of event-time correlations in nanoparticle-induced cell death. Commun Biol 2019; 2:35. [PMID: 30701200 PMCID: PMC6345847 DOI: 10.1038/s42003-019-0282-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 12/27/2018] [Indexed: 12/20/2022] Open
Abstract
The temporal context of cell death decisions remains generally hidden in ensemble measurements with endpoint readouts. Here, we describe a method to extract event times from fluorescence time traces of cell death-related markers in automated live-cell imaging on single-cell arrays (LISCA) using epithelial A549 lung and Huh7 liver cancer cells as a model system. In pairwise marker combinations, we assess the chronological sequence and delay times of the events lysosomal membrane permeabilization, mitochondrial outer membrane permeabilization and oxidative burst after exposure to 58 nm amino-functionalized polystyrene nanoparticles (PS-NH2 nanoparticles). From two-dimensional event-time scatter plots we infer a lysosomal signal pathway at a low dose of nanoparticles (25 µg mL-1) for both cell lines, while at a higher dose (100 µg mL-1) a mitochondrial pathway coexists in A549 cells, but not in Huh7. In general, event-time correlations provide detailed insights into heterogeneity and interdependencies in signal transmission pathways.
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Affiliation(s)
- Alexandra Murschhauser
- Faculty of Physics and Center for NanoSciene (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, Munich, 80539 Germany
| | - Peter J. F. Röttgermann
- Faculty of Physics and Center for NanoSciene (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, Munich, 80539 Germany
| | - Daniel Woschée
- Faculty of Physics and Center for NanoSciene (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, Munich, 80539 Germany
| | - Martina F. Ober
- Faculty of Physics and Center for NanoSciene (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, Munich, 80539 Germany
| | - Yan Yan
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Kenneth A. Dawson
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Joachim O. Rädler
- Faculty of Physics and Center for NanoSciene (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, Munich, 80539 Germany
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28
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Trovato MC, Andronico D, Sciacchitano S, Ruggeri RM, Picerno I, Di Pietro A, Visalli G. Nanostructures: between natural environment and medical practice. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:295-307. [PMID: 30205650 DOI: 10.1515/reveh-2017-0036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
Abstract
Nanoparticles (NPs) are small structures under 100 nm in dimension. Interrelationships among the morphological parameters and toxicity of NPs have been the focus of several investigations that assessed potential health risk in environmentally-exposed subjects and the realistic uses of NPs in medical practice. In the current review, we provide a summary of the cellular mechanisms of membrane-mediated transport, including old and novel molecules that transport nanostructures across cellular membranes. The effects of geochemical exposure to natural NPs are evaluated through epidemiological data and cancerous pathways activated by Fe2+ NPs. Specifically, we discuss screening for papillary thyroid carcinomas in the inhabitants of the Sicilian volcanic area surrounding Mount Etna to compare the incidence of thyroid carcinoma in this population. Lastly, considering the increased production of carbon nanotubes (CNTs), we examine the toxicity and potential use of these engineered NPs in drug delivery of an extensive amount of therapeutic and imaging molecules (theranosis) that can be conjugated to CNTs.
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Affiliation(s)
- Maria Concetta Trovato
- Department of Clinical and Experimental Medicine, Policlinico Universitario, Consolare Valeria 1, Messina, Italy
| | - Daniele Andronico
- Istituto Nazionale di Geofisica e Vulcanologia (INGV), Osservatorio Etneo, Sezione di Catania, Piazza Roma 2, Catania, Italy
| | - Salvatore Sciacchitano
- Department of Clinical and Molecular Medicine, Sapienza University, Policlinico Umberto I, Viale Regina Elena n. 324, Rome, Italy
- Laboratorio di Ricerca Biomedica, Fondazione Università Niccolò Cusano per la Ricerca Medico Scientifica, Via Don Carlo Gnocchi 3, Rome, Italy
| | - Rosaria Maddalena Ruggeri
- Department of Clinical and Experimental Medicine, Policlinico Universitario, Consolare Valeria 1, Messina, Italy
| | - Isa Picerno
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Policlinico Universitario, Consolare Valeria 1, Messina, Italy
| | - Angela Di Pietro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Policlinico Universitario, Consolare Valeria 1, Messina, Italy
| | - Giuseppa Visalli
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Policlinico Universitario, Consolare Valeria 1, Messina, Italy
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Meng Y, Wang L, Ling L. Changes of lysosomal membrane permeabilization and lipid metabolism in sidt2 deficient mice. Exp Ther Med 2018; 16:246-252. [PMID: 29896245 PMCID: PMC5995057 DOI: 10.3892/etm.2018.6187] [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: 10/16/2017] [Accepted: 03/29/2018] [Indexed: 01/13/2023] Open
Abstract
The SID1 transmembrane family member 2 (sidt2) deficient mouse model was used to investigate the function of sidt2 in lysosomal membrane permeabilization and lipid metabolism of liver tissue. The mouse model was established by Cre/LoxP technology. Enzymatic methods were used to analyze the sidt2−/− mouse serum lipids, aspartate transaminase, alanine transaminase and serum bilirubin, compared with sidt2+/+ mice. Defective lipid metabolism and damaged liver functions were observed in the sidt2−/− mice. By using hematoxylin and eosin and Oil Red O staining, changes of morphology were observed in sidt2−/− mice with optical microscopy. Transmission electron microscopy was also used. Hepatic steatosis and partial liver tissue apoptosis were observed. The tissue distribution of sidt2 protein and mRNA was measured in knockout mice. The results indicated that negligible sidt2 mRNA and protein expression were observed in sidt2−/− mice, and that sidt2−/− mice had abnormal liver functions. Transmission electron microscopy revealed membrane lipid droplets in the liver cell cytoplasm, and some apoptotic body formation. These results demonstrated that absence of the lysosomal membrane protein sidt2 led to changes in lysosomal membrane permeabilization and lipid metabolism.
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Affiliation(s)
- Yu Meng
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, Anhui 241001, P.R. China.,Department of Biochemistry, Wannan Medical College, Wuhu, Anhui 241002, P.R. China
| | - Lizhuo Wang
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, Anhui 241001, P.R. China.,Department of Biochemistry, Wannan Medical College, Wuhu, Anhui 241002, P.R. China
| | - Liefeng Ling
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, Anhui 241001, P.R. China.,Department of Biochemistry, Wannan Medical College, Wuhu, Anhui 241002, P.R. China
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30
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Chao XJ, Wang KN, Sun LL, Cao Q, Ke ZF, Cao DX, Mao ZW. Cationic Organochalcogen with Monomer/Excimer Emissions for Dual-Color Live Cell Imaging and Cell Damage Diagnosis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13264-13273. [PMID: 29616788 DOI: 10.1021/acsami.7b12521] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Studies on the development of fluorescent organic molecules with different emission colors for imaging of organelles and their biomedical application are gaining lots of focus recently. Here, we report two cationic organochalcogens 1 and 2, both of which exhibit very weak green emission (Φ1 = 0.12%; Φ2 = 0.09%) in dilute solution as monomers, but remarkably enhanced green emission upon interaction with nucleic acids and large red-shifted emission in aggregate state by the formation of excimers at high concentration. More interestingly, the monomer emission and excimer-like emission can be used for dual color imaging of different organelles. Upon passively diffusing into cells, both probes selectively stain nucleoli with strong green emission upon 488 nm excitation, whereas upon 405 nm excitation, a completely different stain pattern by staining lysosomes (for 1) or mitochondria (for 2) with distinct red emission is observed because of the highly concentrated accumulation in these organelles. Studies on the mechanism of the accumulation in lysosomes (for 1) or mitochondria (for 2) found that the accumulations of the probes are dependent on the membrane permeabilization, which make the probes have great potential in diagnosing cell damage by sensing lysosomal or mitochondrial membrane permeabilization. The study is demonstrative, for the first time, of two cationic molecules for dual-color imaging nucleoli and lysosomes (1)/mitochondria (2) simultaneously in live cell based on monomer and excimer-like emission, respectively, and more importantly, for diagnosing cell damage.
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Affiliation(s)
- Xi-Juan Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Kang-Nan Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Li-Li Sun
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Zhuo-Feng Ke
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
| | - Du-Xia Cao
- School of Materials Science and Engineering , University of Jinan , Jinan 250022 Shandong , China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
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Abstract
Brain iron is tightly regulated by a multitude of proteins to ensure homeostasis. Iron dyshomeostasis has become a molecular signature associated with aging which is accompanied by progressive decline in cognitive processes. A common theme in neurodegenerative diseases where age is the major risk factor, iron dyshomeostasis coincides with neuroinflammation, abnormal protein aggregation, neurodegeneration, and neurobehavioral deficits. There is a great need to determine the mechanisms governing perturbations in iron metabolism, in particular to distinguish between physiological and pathological aging to generate fruitful therapeutic targets for neurodegenerative diseases. The aim of the present review is to focus on the age-related alterations in brain iron metabolism from a cellular and molecular biology perspective, alongside genetics, and neuroimaging aspects in man and rodent models, with respect to normal aging and neurodegeneration. In particular, the relationship between iron dyshomeostasis and neuroinflammation will be evaluated, as well as the effects of systemic iron overload on the brain. Based on the evidence discussed here, we suggest a synergistic use of iron-chelators and anti-inflammatories as putative anti-brain aging therapies to counteract pathological aging in neurodegenerative diseases.
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Affiliation(s)
- Azhaar Ashraf
- Institute of Psychiatry, Psychology and Neuroscience, Department of Neuroimaging, King's College London, London, United Kingdom
| | - Maryam Clark
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Po-Wah So
- Institute of Psychiatry, Psychology and Neuroscience, Department of Neuroimaging, King's College London, London, United Kingdom
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Why should neuroscientists worry about iron? The emerging role of ferroptosis in the pathophysiology of neuroprogressive diseases. Behav Brain Res 2017; 341:154-175. [PMID: 29289598 DOI: 10.1016/j.bbr.2017.12.036] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 12/23/2017] [Accepted: 12/27/2017] [Indexed: 12/12/2022]
Abstract
Ferroptosis is a unique form of programmed death, characterised by cytosolic accumulation of iron, lipid hydroperoxides and their metabolites, and effected by the fatal peroxidation of polyunsaturated fatty acids in the plasma membrane. It is a major driver of cell death in neurodegenerative neurological diseases. Moreover, cascades underpinning ferroptosis could be active drivers of neuropathology in major psychiatric disorders. Oxidative and nitrosative stress can adversely affect mechanisms and proteins governing cellular iron homeostasis, such as the iron regulatory protein/iron response element system, and can ultimately be a source of abnormally high levels of iron and a source of lethal levels of lipid membrane peroxidation. Furthermore, neuroinflammation leads to the upregulation of divalent metal transporter1 on the surface of astrocytes, microglia and neurones, making them highly sensitive to iron overload in the presence of high levels of non-transferrin-bound iron, thereby affording such levels a dominant role in respect of the induction of iron-mediated neuropathology. Mechanisms governing systemic and cellular iron homeostasis, and the related roles of ferritin and mitochondria are detailed, as are mechanisms explaining the negative regulation of ferroptosis by glutathione, glutathione peroxidase 4, the cysteine/glutamate antiporter system, heat shock protein 27 and nuclear factor erythroid 2-related factor 2. The potential role of DJ-1 inactivation in the precipitation of ferroptosis and the assessment of lipid peroxidation are described. Finally, a rational approach to therapy is considered, with a discussion on the roles of coenzyme Q10, iron chelation therapy, in the form of deferiprone, deferoxamine (desferrioxamine) and deferasirox, and N-acetylcysteine.
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Biological safety and tissue distribution of (16-mercaptohexadecyl)trimethylammonium bromide-modified cationic gold nanorods. Biomaterials 2017; 154:275-290. [PMID: 29149721 DOI: 10.1016/j.biomaterials.2017.10.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/13/2017] [Accepted: 10/27/2017] [Indexed: 12/18/2022]
Abstract
The exceptionally high cellular uptake of gold nanorods (GNRs) bearing cationic surfactants makes them a promising tool for biomedical applications. Given the known specific toxic and stress effects of some preparations of cationic nanoparticles, the purpose of this study was to evaluate, in an in vitro and in vivo in mouse, the potential harmful effects of GNRs coated with (16-mercaptohexadecyl)trimethylammonium bromide (MTABGNRs). Interestingly, even after cellular accumulation of high amounts of MTABGNRs sufficient for induction of photothermal effect, no genotoxicity (even after longer-term accumulation), induction of autophagy, destabilization of lysosomes (dominant organelles of their cellular destination), alterations of actin cytoskeleton, or in cell migration could be detected in vitro. In vivo, after intravenous administration, the majority of GNRs accumulated in mouse spleen followed by lungs and liver. Microscopic examination of the blood and spleen showed that GNRs interacted with white blood cells (mononuclear and polymorphonuclear leukocytes) and thrombocytes, and were delivered to the spleen red pulp mainly as GNR-thrombocyte complexes. Importantly, no acute toxic effects of MTABGNRs administered as 10 or 50 μg of gold per mice, as well as no pathological changes after their high accumulation in the spleen were observed, indicating good tolerance of MTABGNRs by living systems.
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Visalli G, Facciolà A, Iannazzo D, Piperno A, Pistone A, Di Pietro A. The role of the iron catalyst in the toxicity of multi-walled carbon nanotubes (MWCNTs). J Trace Elem Med Biol 2017; 43:153-160. [PMID: 28126205 DOI: 10.1016/j.jtemb.2017.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 12/30/2016] [Accepted: 01/12/2017] [Indexed: 11/19/2022]
Abstract
This study aimed to investigate the role of iron, used as a catalyst, in the biological response to pristine and functionalized multi-walled carbon nanotubes (p/fMWCNTs) with an iron content of 2.5-2.8%. Preliminarily, we assessed the pro-oxidant activity of MWCNTs-associated iron by an abiotic test. To evaluate iron bioavailability, we measured intracellular redox-active iron in A549 cells exposed to both MWCNT suspensions and to the cell medium preconditioned by MWCNTs, in order to assess the iron dissolution rate under physiological conditions. Moreover, in exposed cells, we detected ROS levels, 8-oxo-dG and mitochondrial function. The results clearly highlighted that MWCNTs- associated iron was not redox-active and that iron leakage did not occur under physiological conditions, including the oxidative burst of specialized cells. Despite this, in MWCNTs exposed cells, higher level of intracellular redox-active iron was measured in comparison to control and a significant time-dependent ROS increase was observed (P<0.01). Higher levels of 8-oxo-dG, a marker of oxidative DNA damage, and decreased mitochondrial function, confirmed the oxidative stress induced by MWCNTs. Based on the results we believe that oxidative damage could be attributable to the release of endogenous redox-active iron. This was due to the damage of acidic vacuolar compartment caused by endocytosis-mediated MWCNT internalization.
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Affiliation(s)
- Giuseppa Visalli
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
| | - Alessio Facciolà
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
| | - Daniela Iannazzo
- Department of Electronic Engineering, Industrial Chemistry and Engineering, University of Messina, Italy.
| | - Anna Piperno
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Alessandro Pistone
- Department of Electronic Engineering, Industrial Chemistry and Engineering, University of Messina, Italy.
| | - Angela Di Pietro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
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Pezhman M, Hosseini SM, Ostadhosseini S, Rouhollahi Varnosfaderani S, Sefid F, Nasr-Esfahani MH. Cathepsin B inhibitor improves developmental competency and cryo-tolerance of in vitro ovine embryos. BMC DEVELOPMENTAL BIOLOGY 2017; 17:10. [PMID: 28676034 PMCID: PMC5496377 DOI: 10.1186/s12861-017-0152-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 06/26/2017] [Indexed: 02/08/2023]
Abstract
Background Cathepsin B is a lysosomal cysteine protease involved in apoptosis and oocytes which have lower developmental competence show higher expression of Cathepsin B. Furthermore, expression of Cathepsin B show a decreasing trend from oocyte toward blastocyst stage. Results Present study assessed the effect of cathepsin B inhibitor, E-64, on developmental competency and cryo-survival of pre-implantation ovine IVF derived embryos. Cathepsin B inhibitor was added during day 3 to 8 of development. One μM E-64 was defined as the optimal concentration required for improving blastocyst rate. This concentration also reduced DNA fragmentation and BAX as apoptotic markers while increasing total cell number per blastocyst and improving anti-apoptotic marker, the BCL2. We further showed that addition of 1.0 μM of E-64 during day 3 to 8 of development improved re-expansion and hatching rates of blastocysts post vitrification. E-64 also reduced rate of DNA fragmentation and BAX expression and increased total cell number per blastocyst and BCL2 expression post vitrification. However, addition of E-64 post vitrification reduced the hatching rate. Conclusion Therefore, it can be concluded that inhibition of cathepsin B in IVC, not only improves quality and quantity of blastocysts but also improves the cryo-survival of in vitro derived blastocysts.
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Affiliation(s)
- M Pezhman
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran.,Department of Biology, Faculty of Science, Nour Danesh Institute of Higher Education, Isfahan, Meymeh, Iran
| | - S M Hosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - S Ostadhosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - Sh Rouhollahi Varnosfaderani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - F Sefid
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran
| | - M H Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Royan St., Salman St., Khorasgan, Jey St, Isfahan, 8159358686, Iran.
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Quantitative biology of hydrogen peroxide signaling. Redox Biol 2017; 13:1-7. [PMID: 28528123 PMCID: PMC5436100 DOI: 10.1016/j.redox.2017.04.039] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/05/2017] [Accepted: 04/08/2017] [Indexed: 12/13/2022] Open
Abstract
Hydrogen peroxide (H2O2) controls signaling pathways in cells by oxidative modulation of the activity of redox sensitive proteins denominated redox switches. Here, quantitative biology concepts are applied to review how H2O2 fulfills a key role in information transmission. Equations described lay the foundation of H2O2 signaling, give new insights on H2O2 signaling mechanisms, and help to learn new information from common redox signaling experiments. A key characteristic of H2O2 signaling is that the ratio between reduction and oxidation of redox switches determines the range of H2O2 concentrations to which they respond. Thus, a redox switch with low H2O2-dependent oxidability and slow reduction rate responds to the same range of H2O2 concentrations as a redox switch with high H2O2-dependent oxidability, but that is rapidly reduced. Yet, in the first case the response time is slow while in the second case is rapid. H2O2 sensing and transmission of information can be done directly or by complex mechanisms in which oxidation is relayed between proteins before oxidizing the final regulatory redox target. In spite of being a very simple molecule, H2O2 has a key role in cellular signaling, with the reliability of the information transmitted depending on the inherent chemical reactivity of redox switches, on the presence of localized H2O2 pools, and on the molecular recognition between redox switches and their partners. Hydrogen peroxide signaling proceeds through oxidation of redox switches. Oxidation of redox switches can be direct or mediated by highly reactive sensors. Response of redox switches is controlled by their oxidability and reduction rate. Localized protein interactions ensure the accuracy of information transmission.
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Master AM, Williams PN, Pothayee N, Pothayee N, Zhang R, Vishwasrao HM, Golovin YI, Riffle JS, Sokolsky M, Kabanov AV. Remote Actuation of Magnetic Nanoparticles For Cancer Cell Selective Treatment Through Cytoskeletal Disruption. Sci Rep 2016; 6:33560. [PMID: 27644858 PMCID: PMC5028756 DOI: 10.1038/srep33560] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/30/2016] [Indexed: 12/29/2022] Open
Abstract
Motion of micron and sub-micron size magnetic particles in alternating magnetic fields can activate mechanosensitive cellular functions or physically destruct cancer cells. However, such effects are usually observed with relatively large magnetic particles (>250 nm) that would be difficult if at all possible to deliver to remote sites in the body to treat disease. Here we show a completely new mechanism of selective toxicity of superparamagnetic nanoparticles (SMNP) of 7 to 8 nm in diameter to cancer cells. These particles are coated by block copolymers, which facilitates their entry into the cells and clustering in the lysosomes, where they are then magneto-mechanically actuated by remotely applied alternating current (AC) magnetic fields of very low frequency (50 Hz). Such fields and treatments are safe for surrounding tissues but produce cytoskeletal disruption and subsequent death of cancer cells while leaving healthy cells intact.
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Affiliation(s)
- Alyssa M Master
- Center for Nanotechnology in Drug Delivery, University of North Carolina, Chapel Hill, NC, USA
| | - Philise N Williams
- Center for Nanotechnology in Drug Delivery, University of North Carolina, Chapel Hill, NC, USA.,Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nikorn Pothayee
- Macromolecules and Interfaces Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Nipon Pothayee
- Macromolecules and Interfaces Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Rui Zhang
- Macromolecules and Interfaces Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Hemant M Vishwasrao
- Center for Nanotechnology in Drug Delivery, University of North Carolina, Chapel Hill, NC, USA.,Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Yuri I Golovin
- Nanocenter, G. R. Derzhavin Tambov State University, Tambov, 392000, Russian Federation.,Laboratory of Chemical Design of Bionanomaterials, Faculty of Chemistry, M. V. Lomonosov Moscow State University, Moscow, 117234, Russian Federation
| | - Judy S Riffle
- Macromolecules and Interfaces Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Marina Sokolsky
- Center for Nanotechnology in Drug Delivery, University of North Carolina, Chapel Hill, NC, USA
| | - Alexander V Kabanov
- Center for Nanotechnology in Drug Delivery, University of North Carolina, Chapel Hill, NC, USA
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Karlsson M, Kurz T. Attenuation of iron-binding proteins in ARPE-19 cells reduces their resistance to oxidative stress. Acta Ophthalmol 2016; 94:556-64. [PMID: 27287874 DOI: 10.1111/aos.13076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 03/03/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE Oxidative stress-related damage to retinal pigment epithelial (RPE) cells is an important feature in the development of age-related macular degeneration. Iron-catalysed intralysosomal production of hydroxyl radicals is considered a major pathogenic factor, leading to lipofuscin formation with ensuing depressed cellular autophagic capacity, lysosomal membrane permeabilization and apoptosis. Previously, we have shown that cultured immortalized human RPE (ARPE-19) cells are extremely resistant to exposure to bolus doses of hydrogen peroxide and contain considerable amounts of the iron-binding proteins metallothionein (MT), heat-shock protein 70 (HSP70) and ferritin (FT). According to previous findings, autophagy of these proteins depresses lysosomal redox-active iron. The aim of this study was to investigate whether up- or downregulation of these proteins would affect the resistance of ARPE-19 cells to oxidative stress. METHODS The sensitivity of ARPE-19 cells to H2 O2 exposure was tested following upregulation of MT, HSP70 and/or FT by pretreatment with ZnSO4 , heat shock or FeCl3 , as well as siRNA-mediated downregulation of the same proteins. RESULTS Upregulation of MT, HSP70 and FT did not improve survival following exposure to H2 O2 . This was interpreted as existence of an already maximal protection. Combined siRNA-mediated attenuation of both FT chains (H and L), or simultaneous downregulation of all three proteins, made the cells significantly more susceptible to oxidative stress confirming the importance of iron-binding proteins. CONCLUSION The findings support our hypothesis that the oxidative stress resistance exhibited by RPE cells may be explained by a high autophagic influx of iron-binding proteins that would keep levels of redox-active lysosomal iron low.
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Affiliation(s)
- Markus Karlsson
- Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
| | - Tino Kurz
- Department of Medical and Health Sciences; Linköping University; Linköping Sweden
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Mantzaris MD, Bellou S, Skiada V, Kitsati N, Fotsis T, Galaris D. Intracellular labile iron determines H2O2-induced apoptotic signaling via sustained activation of ASK1/JNK-p38 axis. Free Radic Biol Med 2016; 97:454-465. [PMID: 27387771 DOI: 10.1016/j.freeradbiomed.2016.07.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/15/2016] [Accepted: 07/04/2016] [Indexed: 01/14/2023]
Abstract
Hydrogen peroxide (H2O2) acts as a second messenger in signal transduction participating in several redox regulated pathways, including cytokine and growth factor stimulated signals. However, the exact molecular mechanisms underlying these processes remain poorly understood and require further investigation. In this work, using Jurkat T lymphoma cells and primary human umbilical vein endothelial cells, it was observed that changes in intracellular "labile iron" were able to modulate signal transduction in H2O2-induced apoptosis. Chelation of intracellular labile iron by desferrioxamine rendered cells resistant to H2O2-induced apoptosis. In order to identify the exact points of iron action, we investigated selected steps in H2O2-mediated apoptotic pathway, focusing on mitogen activated protein kinases (MAPKs) JNK, p38 and ERK. It was observed that spatiotemporal changes in intracellular labile iron, induced by H2O2, influenced the oxidation pattern of the upstream MAP3K ASK1 and promoted the sustained activation of JNK-p38 axis in a defined time-dependent context. Moreover, we indicate that H2O2 induced spatiotemporal changes in intracellular labile iron, at least in part, by triggering the destabilization of lysosomal compartments, promoting a concomitant early response in proteins of iron homeostasis. These results raise the possibility that iron-mediated oxidation of distinct proteins may be implicated in redox signaling processes. Since labile iron can be pharmacologically modified in vivo, it may represent a promising target for therapeutic interventions in related pathological conditions.
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Affiliation(s)
- M D Mantzaris
- Laboratory of Biological Chemistry, School of Health Sciences, Faculty of Medicine, University of Ioannina, Greece
| | - S Bellou
- Foundation for Research & Technology-Hellas, Institute of Molecular Biology & Biotechnology, Department of Biomedical Research, Ioannina, Greece
| | - V Skiada
- Laboratory of Biological Chemistry, School of Health Sciences, Faculty of Medicine, University of Ioannina, Greece
| | - N Kitsati
- Laboratory of Biological Chemistry, School of Health Sciences, Faculty of Medicine, University of Ioannina, Greece
| | - T Fotsis
- Laboratory of Biological Chemistry, School of Health Sciences, Faculty of Medicine, University of Ioannina, Greece; Foundation for Research & Technology-Hellas, Institute of Molecular Biology & Biotechnology, Department of Biomedical Research, Ioannina, Greece
| | - D Galaris
- Laboratory of Biological Chemistry, School of Health Sciences, Faculty of Medicine, University of Ioannina, Greece.
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Scaringi L, Cornacchione P, Ayroldi E, Corazzi L, Capodicasa E, Rossi R, Marconi P. Omeprazole Induces Apoptosis in Jurkat Cells. Int J Immunopathol Pharmacol 2016; 17:331-42. [PMID: 15461867 DOI: 10.1177/039463200401700313] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We report for the first time a potent apoptotic effect of omeprazole (OM). Apoptosis was induced in Jurkat cells in a time and concentration-dependent mode. Caspase 3 and PARP were rapidly cleaved in response to OM, but apoptosis was only partially inhibited by the caspase 3 inhibitor DEVD-CHO. OM also induced an early lysosomal destabilization which increased progressively and was correlated with a parallel increase in apoptotic cells. The cysteine protease inhibitor E64d gave strong protection against apoptosis thus proving the involvement of lysosomal enzymes in OM-induced apoptosis whereas, it did not impede the caspase 3 cleavage. Instead ZVAD-fmk, a general caspase inhibitor, also able to inhibit cathepsin activity, protected cells completely from OM-induced apoptosis. It therefore seems that both caspases and cysteine cathepsins are involved in the execution stage of OM-induced apoptosis.
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Affiliation(s)
- L Scaringi
- Department of Clinical and Experimental Medicine, General Pathology and Immunology Section, General Hospital, University of Perugia, Perugia, Italy.
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41
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Ouyang J, Zang Q, Chen W, Wang L, Li S, Liu RY, Deng Y, Liu ZQ, Li J, Deng L, Liu YN. Bright and photostable fluorescent probe with aggregation-induced emission characteristics for specific lysosome imaging and tracking. Talanta 2016; 159:255-261. [PMID: 27474306 DOI: 10.1016/j.talanta.2016.06.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/11/2016] [Accepted: 06/15/2016] [Indexed: 11/18/2022]
Abstract
We develop a new lysosome-targeting AIE fluorescent probe tetraphenylethene-morpholine (TPE-MPL), by incorporating a typical lysosome-targeting moiety of morpholine into a stable tetraphenylethene skeleton. Due to both the AIE and antenna effects, TPE-MPL possesses superior photostability, appreciable tolerance to microenvironment change and high lysosome targeting ability. Our findings confirm that TPE-MPL is a well-suited imaging agent for targeting lysosome and tracking dynamic movement of lysosome. Moreover, due to its synthetic accessibility, TPE-MPL could be further modified as a dual-functional probe for lysosome, thereby gain further insight into the role of lysosome in biomedical applications.
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Affiliation(s)
- Jiang Ouyang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
| | - Qiguang Zang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China; Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, Guangdong 510640, PR China
| | - Wansong Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
| | - Liqiang Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
| | - Shuo Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
| | - Ren-Yu Liu
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Xiangya School of Medicine, Central South University, Changsha, Hunan 410008, PR China
| | - Yuanyuan Deng
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Xiangya School of Medicine, Central South University, Changsha, Hunan 410008, PR China
| | - Zhao-Qian Liu
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China
| | - Juan Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
| | - Liu Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China.
| | - You-Nian Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China.
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Gutierrez EM, Seebacher NA, Arzuman L, Kovacevic Z, Lane DJR, Richardson V, Merlot AM, Lok H, Kalinowski DS, Sahni S, Jansson PJ, Richardson DR. Lysosomal membrane stability plays a major role in the cytotoxic activity of the anti-proliferative agent, di-2-pyridylketone 4,4-dimethyl-3-thiosemicarbazone (Dp44mT). BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:1665-81. [PMID: 27102538 DOI: 10.1016/j.bbamcr.2016.04.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/08/2016] [Accepted: 04/15/2016] [Indexed: 02/06/2023]
Abstract
The potent and selective anti-tumor agent, di-2-pyridylketone 4,4-dimethyl-3-thiosemicarbazone (Dp44mT), localizes in lysosomes and forms cytotoxic copper complexes that generate reactive oxygen species (ROS), resulting in lysosomal membrane permeabilization (LMP) and cell death. Herein, the role of lysosomal membrane stability in the anti-tumor activity of Dp44mT was investigated. Studies were performed using molecules that protect lysosomal membranes against Dp44mT-induced LMP, namely heat shock protein 70 (HSP70) and cholesterol. Up-regulation or silencing of HSP70 expression did not affect Dp44mT-induced LMP in MCF7 cells. In contrast, cholesterol accumulation in lysosomes induced by the well characterized cholesterol transport inhibitor, 3-β-[2-(diethyl-amino)ethoxy]androst-5-en-17-one (U18666A), inhibited Dp44mT-induced LMP and markedly and significantly (p<0.001) reduced the ability of Dp44mT to inhibit cancer cell proliferation (i.e., increased the IC(50)) by 140-fold. On the other hand, cholesterol extraction using methyl-β-cyclodextrin enhanced Dp44mT-induced LMP and significantly (p<0.01) increased its anti-proliferative activity. The protective effect of U18666A in increasing lysosomal cholesterol and preventing the cytotoxic activity of Dp44mT was not due to induced autophagy. Instead, U18666A was found to decrease lysosomal turnover, resulting in autophagosome accumulation. Moreover, preincubation with U18666A did not prevent the ability of Dp44mT to induce autophagosome synthesis, indicating that autophagic initiation via Dp44mT occurs independently of LMP. These studies demonstrate the significance of lysosomal membrane stability in relation to the ability of Dp44mT to execute tumor cell death and overcome pro-survival autophagy. Hence, lysosomal-dependent cell death induced by Dp44mT serves as an important anti-tumor strategy. These results are important for comprehensively understanding the mechanism of action of Dp44mT.
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Affiliation(s)
- Elaine M Gutierrez
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Nicole A Seebacher
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Laila Arzuman
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zaklina Kovacevic
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Darius J R Lane
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Vera Richardson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Angelica M Merlot
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Hiu Lok
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Danuta S Kalinowski
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Sumit Sahni
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Patric J Jansson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia.
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia.
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Ge K, Sun W, Zhang S, Wang S, Jia G, Zhang C, Zhang J. Europium-doped NaYF4 nanoparticles cause the necrosis of primary mouse bone marrow stromal cells through lysosome damage. RSC Adv 2016. [DOI: 10.1039/c6ra01625a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Applications of europium-doped NaYF4 (NaYF4:Eu3+) nanoparticles in biomedical fields will inevitably increase their exposure to humans, therefore, the assessment of toxicities must be taken into consideration.
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Affiliation(s)
- Kun Ge
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
| | - Wentong Sun
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
| | - Shaohan Zhang
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
| | - Shuxian Wang
- Affiliated Hospital of Hebei University
- Baoding 071000
- P. R. China
| | - Guang Jia
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
| | - Cuimiao Zhang
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
| | - Jinchao Zhang
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
- Baoding 071002
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Xu Y, Wang J, Song X, Wei R, He F, Peng G, Luo B. Protective mechanisms of CA074-me (other than cathepsin-B inhibition) against programmed necrosis induced by global cerebral ischemia/reperfusion injury in rats. Brain Res Bull 2016; 120:97-105. [PMID: 26562519 DOI: 10.1016/j.brainresbull.2015.11.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 01/13/2023]
Abstract
Many studies have demonstrated the key role of lysosomes in ischemic cell death in the brain and have led to the "lysosomocentric" hypothesis. In this hypothesis, the release of cathepsin-B due to a change of lysosomal membrane permeabilization (LMP) or rupture is critical, and this can be prevented by its inhibitors CA074 and CA074-me. However, the role of CA074-me in neuronal death and its effect on the change of lysosomal membrane integrity after global cerebral ischemia/reperfusion (I/R) injury is not clear, so we investigated this here. Rat hippocampal CA1 neuronal death was evaluated after 20-min global cerebral I/R injury. CA074-me (1 μg, 10 μg) were given intracerebroventricularly 1h before ischemia or 1h post reperfusion. The changes of heat shock protein 70 (Hsp70), cathepsin-B, lysosomal-associated membrane protein 1 (LAMP-1), receptor-interacting protein 3 (RIP3), and the change of lysosomal pH were evaluated respectively. Hippocampal CA1 neuronal programmed necrosis induced by global cerebral I/R injury was prevented by CA074-me both pre-treatment and post-treatment. Diffuse cytoplasmic cathepsin-B and LAMP-1 immunostaining synchronized with the pyknotic nuclear changes 2 days post reperfusion, and a rise of lysosomal pH with the leakage of DND-153, a dye of lysosomes, after oxygen-glucose deprivation (OGD) was detected. Both of these changes demonstrated the rupture of lysosomal membrane and the leakage of cathepsin-B, and this was strongly inhibited by CA074-me pre-treatment. The overexpression and nuclear translocation of RIP3 and the reduction of NAD(+) level after I/R injury were also inhibited, while the upregulation of Hsp70 was strengthened by CA074-me pre-treatment. Delayed fulminant leakage of cathepsin-B due to lysosomal rupture is a critical harmful factor in neuronal programmed necrosis induced by 20-min global I/R injury. In addition to being an inhibitor of cathepsin-B, CA074-me may have an indirect neuroprotective effect by maintaining lysosomal membrane integrity and protecting against lysosomal rupture.
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Affiliation(s)
- Yang Xu
- Department of Neurology, Brain Medical Centre, First Affiliated Hospital, Zhejiang University School of Medicine, 89 Qingchun Road, Hangzhou 310003, China
| | - Jingye Wang
- Department of Neurology, First Affiliated Hospital, Anhui Medical University, 218 Jixi Road, Hefei 230022, China
| | - Xinghui Song
- Core Facilities, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Ruili Wei
- Department of Neurology, Brain Medical Centre, First Affiliated Hospital, Zhejiang University School of Medicine, 89 Qingchun Road, Hangzhou 310003, China
| | - Fangping He
- Department of Neurology, Brain Medical Centre, First Affiliated Hospital, Zhejiang University School of Medicine, 89 Qingchun Road, Hangzhou 310003, China
| | - Guoping Peng
- Department of Neurology, Brain Medical Centre, First Affiliated Hospital, Zhejiang University School of Medicine, 89 Qingchun Road, Hangzhou 310003, China
| | - Benyan Luo
- Department of Neurology, Brain Medical Centre, First Affiliated Hospital, Zhejiang University School of Medicine, 89 Qingchun Road, Hangzhou 310003, China.
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Yu F, Chen Z, Wang B, Jin Z, Hou Y, Ma S, Liu X. The role of lysosome in cell death regulation. Tumour Biol 2015; 37:1427-36. [DOI: 10.1007/s13277-015-4516-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 11/25/2015] [Indexed: 02/01/2023] Open
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Cellular Composition of the Spleen and Changes in Splenic Lysosomes in the Dynamics of Dyslipidemia in Mice Caused by Repeated Administration of Poloxamer 407. Bull Exp Biol Med 2015; 160:28-31. [PMID: 26608379 DOI: 10.1007/s10517-015-3090-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Indexed: 10/22/2022]
Abstract
We studied the effect of dyslipidemia induced by poloxamer 407 (300 mg/kg twice a week for 30 days) on cellular composition of the spleen and splenocyte lysosomes in mice. Changes in blood lipid profile included elevated concentrations of total cholesterol, aterogenic LDL, and triglycerides most pronounced in 24 h after the last poloxamer 407 injection; gradual normalization of lipid profile was observed in 4 days (except triglycerides) and 10 days. The most pronounced changes in the spleen (increase in organ weight and number of cells, inhibition in apoptosis, and reduced accumulation of vital dye acridine orange in lysosomes) were detected on day 4; on day 10, the indices returned to normal. Cathepsin D activity in the spleen also increased at these terms. The relationship between changes in the cellular composition of the spleen and dynamics of serum lipid profile in mice in dyslipidemia caused by repeated administrations of relatively low doses of poloxamer 407 is discussed.
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Prasad KS, Vaghasiya JV, Soni SS, Patel J, Patel R, Kumari M, Jasmani F, Selvaraj K. Microbial Selenium Nanoparticles (SeNPs) and Their Application as a Sensitive Hydrogen Peroxide Biosensor. Appl Biochem Biotechnol 2015; 177:1386-93. [DOI: 10.1007/s12010-015-1814-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 08/17/2015] [Indexed: 12/19/2022]
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48
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Sims-Robinson C, Bakeman A, Rosko A, Glasser R, Feldman EL. The Role of Oxidized Cholesterol in Diabetes-Induced Lysosomal Dysfunction in the Brain. Mol Neurobiol 2015; 53:2287-96. [PMID: 25976368 PMCID: PMC4644712 DOI: 10.1007/s12035-015-9207-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 05/03/2015] [Indexed: 12/01/2022]
Abstract
Abnormalities in lysosomal function have been reported in diabetes, aging, and age-related degenerative diseases. These lysosomal abnormalities are an early manifestation of neurodegenerative diseases and often precede the onset of clinical symptoms such as learning and memory deficits; however, the mechanism underlying lysosomal dysfunction is not known. In the current study, we investigated the mechanism underlying lysosomal dysfunction in the cortex and hippocampi, key structures involved in learning and memory, of a type 2 diabetes (T2D) mouse model, the leptin receptor deficient db/db mouse. We demonstrate for the first time that diabetes leads to destabilization of lysosomes as well as alterations in the protein expression, activity, and/or trafficking of two lysosomal enzymes, hexosaminidase A and cathepsin D, in the hippocampus of db/db mice. Pioglitazone, a thiazolidinedione (TZD) commonly used in the treatment of diabetes due to its ability to improve insulin sensitivity and reverse hyperglycemia, was ineffective in reversing the diabetes-induced changes on lysosomal enzymes. Our previous work revealed that pioglitazone does not reverse hypercholesterolemia; thus, we investigated whether cholesterol plays a role in diabetes-induced lysosomal changes. In vitro, cholesterol promoted the destabilization of lysosomes, suggesting that lysosomal-related changes associated with diabetes are due to elevated levels of cholesterol. Since lysosome dysfunction precedes neurodegeneration, cognitive deficits, and Alzheimer’s disease neuropathology, our results may provide a potential mechanism that links diabetes with complications of the central nervous system.
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Affiliation(s)
- Catrina Sims-Robinson
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA. .,Department of Neurosciences, Medical University of South Carolina, Charleston, SC, 29425, USA. .,Department of Neurology and Neurosurgery, Medical University of South Carolina, 96 Jonathan Lucas Street, 309D2 Clinical Sciences Building, MSC 606, Charleston, SC, 29425, USA.
| | - Anna Bakeman
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Andrew Rosko
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Rebecca Glasser
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI, 48109, USA
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49
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Abstract
Autophagy is a homeostatic degradation process that is involved in tumor
development and normal development. Autophagy is induced in cancer cells in
response to chemotherapeutic agents, and inhibition of autophagy results in
enhanced cancer cell death or survival. Chloroquine (CQ), an anti-malarial drug,
is a lysosomotropic agent and is currently used as a potential anticancer agent
as well as an autophagy inhibitor. Here, we evaluate the characteristics of
these dual activities of CQ using human colorectal cancer cell line HCT15. The
results show that CQ inhibited cell viability in dose-and time-dependent manner
in the range between 20 to 80 uM, while CQ did not show any antiproliferative
activity at 5 and 10 uM. Cotreatment of CQ with antitumor agent NVP-BEZ235, a
dual inhibitor of PI3K/mTOR, rescued the cell viability at low concentrations
meaning that CQ acted as an autophagy inhibitor, but CQ induced the lethal
effect at high concentrations. Acridine orange staining revealed that CQ at high
doses induced lysosomal membrane permeabilization (LMP). High doses of CQ
produced cellular reactive oxygen species (ROS) and cotreatment of antioxidants,
such as NAC and trolox, with high doses of CQ rescued the cell viability. These
results suggest that CQ may exert its dual activities, as autophagy inhibitor or
LMP inducer, in concentration-dependent manner.
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Affiliation(s)
- Deokbae Park
- Dept. of Histology, Jeju National University School of Medicine, Jeju 690-756, Korea
| | - Youngki Lee
- Dept. of Histology, Jeju National University School of Medicine, Jeju 690-756, Korea
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50
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Rinaldi DE, Corradi GR, Cuesta LM, Adamo HP, de Tezanos Pinto F. The Parkinson-associated human P5B-ATPase ATP13A2 protects against the iron-induced cytotoxicity. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1646-55. [PMID: 25912790 DOI: 10.1016/j.bbamem.2015.04.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 03/28/2015] [Accepted: 04/15/2015] [Indexed: 12/11/2022]
Abstract
P-type ion pumps are membrane transporters that have been classified into five subfamilies termed P1-P5. The ion transported by the P5-ATPases is not known. Five genes named ATP13A1-ATP13A5 that belong to the P5-ATPase group are present in humans. Loss-of-function mutations in the ATP13A2 gene (PARK9, OMIM 610513) underlay a form of Parkinson's disease (PD) known as the Kufor-Rakeb syndrome (KRS), which belongs to the group of syndromes of neurodegeneration with brain iron accumulation (NBIA). Here we report that the cytotoxicity induced by iron exposure was two-fold reduced in CHO cells stably expressing the ATP13A2 recombinant protein (ATP13A2). Moreover, the iron content in ATP13A2 cells was lower than control cells stably expressing an inactive mutant of ATP13A2. ATP13A2 expression caused an enlargement of lysosomes and late endosomes. ATP13A2 cells exhibited a reduced iron-induced lysosome membrane permeabilization (LMP). These results suggest that ATP13A2 overexpression improves the lysosome membrane integrity and protects against the iron-induced cell damage.
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Affiliation(s)
- Débora E Rinaldi
- From IQUIFIB-Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires 1113, Argentina
| | - Gerardo R Corradi
- From IQUIFIB-Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires 1113, Argentina
| | - Lucía Martínez Cuesta
- From IQUIFIB-Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires 1113, Argentina
| | - Hugo P Adamo
- From IQUIFIB-Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires 1113, Argentina.
| | - Felicitas de Tezanos Pinto
- From IQUIFIB-Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires 1113, Argentina.
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