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Paulissen E, Martin BL. A Chemically Inducible Muscle Ablation System for the Zebrafish. Zebrafish 2024; 21:243-249. [PMID: 38436568 DOI: 10.1089/zeb.2023.0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
An effective method for tissue-specific ablation in zebrafish is the nitroreductase (NTR)/metronidazole (MTZ) system. Expressing bacterial NTR in the presence of nitroimidazole compounds causes apoptotic cell death, which can be useful for understanding many biological processes. However, this requires tissue-specific expression of the NTR enzyme, and many tissues have yet to be targeted with transgenic lines that express NTR. We generated a transgenic zebrafish line expressing NTR in differentiated skeletal muscle. Treatment of embryos with MTZ caused muscle specific cell ablation. We demonstrate this line can be used to monitor muscle regeneration in whole embryos and in transplanted transgenic cells.
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Affiliation(s)
- Eric Paulissen
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Benjamin L Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
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2
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Lourenço DM, Soares R, Sá-Santos S, Mateus JM, Rodrigues RS, Moreira JB, Vaz SH, Sebastião AM, Solá S, Xapelli S. Unravelling a novel role for cannabidivarin in the modulation of subventricular zone postnatal neurogenesis. Eur J Pharmacol 2023; 959:176079. [PMID: 37802277 DOI: 10.1016/j.ejphar.2023.176079] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/08/2023]
Abstract
Postnatal neurogenesis has been shown to rely on the endocannabinoid system. Here we aimed at unravelling the role of Cannabidivarin (CBDV), a non-psychoactive cannabinoid, with high affinity for the non-classical cannabinoid receptor TRPV1, on subventricular zone (SVZ) postnatal neurogenesis. Using the neurosphere assay, SVZ-derived neural stem/progenitor cells (NSPCs) were incubated with CBDV and/or 5'-Iodoresinferotoxin (TRPV1 antagonist), and their role on cell viability, proliferation, and differentiation were dissected. CBDV was able to promote, through a TRPV1-dependent mechanism, cell survival, cell proliferation and neuronal differentiation. Furthermore, pulse-chase experiments revealed that CBDV-induced neuronal differentiation was a result of cell cycle exit of NSPCs. Regarding oligodendrocyte differentiation, CBDV inhibited oligodendrocyte differentiation and maturation. Since our data suggested that the CBDV-induced modulation of NSPCs acted via TRPV1, a sodium-calcium channel, and that intracellular calcium levels are known regulators of NSPCs fate and neuronal maturation, single cell calcium imaging was performed to evaluate the functional response of SVZ-derived cells. We observed that CBDV-responsive cells displayed a two-phase calcium influx profile, being the initial phase dependent on TRPV1 activation. Taken together, this work unveiled a novel and untapped neurogenic potential of CBDV via TRPV1 modulation. These findings pave the way to future neural stem cell biological studies and repair strategies by repurposing this non-psychoactive cannabinoid as a valuable therapeutic target.
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Affiliation(s)
- Diogo M Lourenço
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Rita Soares
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Biologia Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Sónia Sá-Santos
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Joana M Mateus
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Rui S Rodrigues
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - João B Moreira
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Sandra H Vaz
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Susana Solá
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Sara Xapelli
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal.
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3
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Morse PT, Pérez-Mejías G, Wan J, Turner AA, Márquez I, Kalpage HA, Vaishnav A, Zurek MP, Huettemann PP, Kim K, Arroum T, De la Rosa MA, Chowdhury DD, Lee I, Brunzelle JS, Sanderson TH, Malek MH, Meierhofer D, Edwards BFP, Díaz-Moreno I, Hüttemann M. Cytochrome c lysine acetylation regulates cellular respiration and cell death in ischemic skeletal muscle. Nat Commun 2023; 14:4166. [PMID: 37443314 PMCID: PMC10345088 DOI: 10.1038/s41467-023-39820-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Skeletal muscle is more resilient to ischemia-reperfusion injury than other organs. Tissue specific post-translational modifications of cytochrome c (Cytc) are involved in ischemia-reperfusion injury by regulating mitochondrial respiration and apoptosis. Here, we describe an acetylation site of Cytc, lysine 39 (K39), which was mapped in ischemic porcine skeletal muscle and removed by sirtuin5 in vitro. Using purified protein and cellular double knockout models, we show that K39 acetylation and acetylmimetic K39Q replacement increases cytochrome c oxidase (COX) activity and ROS scavenging while inhibiting apoptosis via decreased binding to Apaf-1, caspase cleavage and activity, and cardiolipin peroxidase activity. These results are discussed with X-ray crystallography structures of K39 acetylated (1.50 Å) and acetylmimetic K39Q Cytc (1.36 Å) and NMR dynamics. We propose that K39 acetylation is an adaptive response that controls electron transport chain flux, allowing skeletal muscle to meet heightened energy demand while simultaneously providing the tissue with robust resilience to ischemia-reperfusion injury.
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Affiliation(s)
- Paul T Morse
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Gonzalo Pérez-Mejías
- Instituto de Investigaciones Químicas, Universidad de Sevilla - CSIC, 41092, Sevilla, Spain
| | - Junmei Wan
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Alice A Turner
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA
| | - Inmaculada Márquez
- Instituto de Investigaciones Químicas, Universidad de Sevilla - CSIC, 41092, Sevilla, Spain
| | - Hasini A Kalpage
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Asmita Vaishnav
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA
| | - Matthew P Zurek
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA
| | - Philipp P Huettemann
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Katherine Kim
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Tasnim Arroum
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
| | - Miguel A De la Rosa
- Instituto de Investigaciones Químicas, Universidad de Sevilla - CSIC, 41092, Sevilla, Spain
| | - Dipanwita Dutta Chowdhury
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA
| | - Icksoo Lee
- College of Medicine, Dankook University, Cheonan-si, Chungcheongnam-do 31116, Republic of Korea
| | - Joseph S Brunzelle
- Life Sciences Collaborative Access Team, Northwestern University, Center for Synchrotron Research, Argonne, IL, 60439, USA
| | - Thomas H Sanderson
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Moh H Malek
- Department of Health Care Sciences, Eugene Applebaum College of Pharmacy & Health Sciences, Wayne State University, Detroit, MI, 48201, USA
| | - David Meierhofer
- Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany
| | - Brian F P Edwards
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA
| | - Irene Díaz-Moreno
- Instituto de Investigaciones Químicas, Universidad de Sevilla - CSIC, 41092, Sevilla, Spain.
| | - Maik Hüttemann
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA.
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, MI, 48201, USA.
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4
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Kumar B, Prasad P, Singh R, Sahu RK, Singh A, Magani SJ, Hedau S. Role of identified proteins in the proteome profiles of CDK4/6 inhibitor-resistant breast cancer cell lines. Mol Omics 2023. [PMID: 36938944 DOI: 10.1039/d2mo00285j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Abemaciclib (Ab) and palbociclib (Pb) are CDK4/6 inhibitors used to cure advanced breast cancer (BC). However, acquired resistance is a major challenge. The molecular mechanisms and signature proteins of therapy resistance for Ab and Pb drugs need to be explored. Here we developed resistant cells for Ab and Pb drugs in MCF-7 cell lines and explored the mechanisms and signature proteins of therapy resistance in BC. Proteome profiling was performed using the label-free proteome-orbitrap-fusion-MS-MS technique. Gene ontology (GO)-terms, KEGG pathways and network analysis were performed for the proteome data. Drug-resistant cells showed increased drug tolerance, enhanced colony formation potential and an increased gap-healing tendency for the respective drug. Up-regulation of survival genes (BCL-2 and MCL-1) and down-regulation of apoptosis inducers were observed. Drug-resistance markers (MDR-1 and ABCG2 (BCRP)) along with ESR-1, CDK4, CDK6, and cyclin-D1 genes were up-regulated in resistant cells. A total of 237 and 239 proteins were found to be differentially expressed in the Ab and Pb-resistant cells, respectively. Down-regulated proteins induce apoptosis signalling and nucleotide metabolisms and restrict EGFR signalling; however, up-regulated proteins induce Erk, wnt-β-catenin, VEGFR-PI3K-AKT, glucose transportation, and hypoxia signalling pathways and regulate hydrogen peroxide signalling pathways. The panel of identified proteins associated with these pathways might have characteristics of molecular signature and new drug targets for overcoming drug resistance in breast cancer.
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Affiliation(s)
- Binayak Kumar
- Division of Molecular Oncology, ICMR-National Institute of Cancer Prevention and Research, I-7, Sector-39, Noida, Uttar Pradesh, 201301, India.
| | - Peeyush Prasad
- Department of Research, Sir Ganga Ram Hospital, 110060, New Delhi, India
| | - Ragini Singh
- Division of Molecular Oncology, ICMR-National Institute of Cancer Prevention and Research, I-7, Sector-39, Noida, Uttar Pradesh, 201301, India.
| | - Ram Krishna Sahu
- Division of Molecular Oncology, ICMR-National Institute of Cancer Prevention and Research, I-7, Sector-39, Noida, Uttar Pradesh, 201301, India.
| | - Ashutosh Singh
- Department of Life Sciences, Shiv Nadar University, NH-91, Tahsil-Dadri, Distt-Gautam Budhaa Nagar, Uttar Pradesh, 201314, India.
| | - Srikrishna Jayadev Magani
- Department of Life Sciences, Shiv Nadar University, NH-91, Tahsil-Dadri, Distt-Gautam Budhaa Nagar, Uttar Pradesh, 201314, India.
| | - Suresh Hedau
- Division of Molecular Oncology, ICMR-National Institute of Cancer Prevention and Research, I-7, Sector-39, Noida, Uttar Pradesh, 201301, India.
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5
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ROS-Induced DNA-Damage and Autophagy in Oral Squamous Cell Carcinoma by Usnea barbata Oil Extract-An In Vitro Study. Int J Mol Sci 2022; 23:ijms232314836. [PMID: 36499160 PMCID: PMC9738295 DOI: 10.3390/ijms232314836] [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: 10/24/2022] [Revised: 11/18/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022] Open
Abstract
Oxidative stress is associated with aging, cancers, and numerous metabolic and chronic disorders, and phenolic compounds are well known for their health-promoting role due to their free-radical scavenging activity. These phytochemicals could also exhibit pro-oxidant effects. Due to its bioactive phenolic secondary metabolites, Usnea barbata (L.) Weber ex. F.H. Wigg (U. barbata) displays anticancer and antioxidant activities and has been used as a phytomedicine for thousands of years. The present work aims to analyze the properties of U. barbata extract in canola oil (UBO). The UBO cytotoxicity on oral squamous cell carcinoma (OSCC) CLS-354 cell line and blood cell cultures was explored through complex flow cytometry analyses regarding apoptosis, reactive oxygen species (ROS) levels, the enzymatic activity of caspase 3/7, cell cycle, nuclear shrinkage (NS), autophagy (A), and synthesis of deoxyribonucleic acid (DNA). All these studies were concomitantly performed on canola oil (CNO) to evidence the interaction of lichen metabolites with the constituents of this green solvent used for extraction. The obtained data evidenced that UBO inhibited CLS-354 oral cancer cell proliferation through ROS generation (316.67 × 104), determining higher levels of nuclear shrinkage (40.12%), cell cycle arrest in G0/G1 (92.51%; G0 is the differentiation phase, while during G1 phase occurs preparation for cell division), DNA fragmentation (2.97%), and autophagy (62.98%) than in blood cells. At a substantially higher ROS level in blood cells (5250.00 × 104), the processes that lead to cell death-NS (30.05%), cell cycle arrest in G0/G1 (86.30%), DNA fragmentation (0.72%), and autophagy (39.37%)-are considerably lower than in CLS-354 oral cancer cells. Our work reveals the ROS-mediated anticancer potential of UBO through DNA damage and autophagy. Moreover, the present study suggests that UBO pharmacological potential could result from the synergism between lichen secondary metabolites and canola oil phytoconstituents.
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6
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Lu K, Wazawa T, Sakamoto J, Vu CQ, Nakano M, Kamei Y, Nagai T. Intracellular Heat Transfer and Thermal Property Revealed by Kilohertz Temperature Imaging with a Genetically Encoded Nanothermometer. NANO LETTERS 2022; 22:5698-5707. [PMID: 35792763 PMCID: PMC9335883 DOI: 10.1021/acs.nanolett.2c00608] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Despite improved sensitivity of nanothermometers, direct observation of heat transport inside single cells has remained challenging for the lack of high-speed temperature imaging techniques. Here, we identified insufficient temperature resolution under short signal integration time and slow sensor kinetics as two major bottlenecks. To overcome the limitations, we developed B-gTEMP, a nanothermometer based on the tandem fusion of mNeonGreen and tdTomato fluorescent proteins. We visualized the propagation of heat inside intracellular space by tracking the temporal variation of local temperature at a time resolution of 155 μs and a temperature resolution 0.042 °C. By comparing the fast in situ temperature dynamics with computer-simulated heat diffusion, we estimated the thermal diffusivity of live HeLa cells. The present thermal diffusivity in cells was about 1/5.3 of that of water and much smaller than the values reported for bulk tissues, which may account for observations of heterogeneous intracellular temperature distributions.
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Affiliation(s)
- Kai Lu
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Tetsuichi Wazawa
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Joe Sakamoto
- National
Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Cong Quang Vu
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Graduate
School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masahiro Nakano
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Yasuhiro Kamei
- National
Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Takeharu Nagai
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Graduate
School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan
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Singh KP, Sharma P, Singh M. Prenatal Venlafaxine Exposure-Induced Neurocytoarchitectural and Neuroapoptotic Degeneration in Striatum and Hippocampus of Developing Fetal Brain, Manifesting Long-term Neurocognitive Impairments in Rat Offspring. Neurotox Res 2022; 40:1174-1190. [PMID: 35819590 DOI: 10.1007/s12640-022-00541-3] [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: 02/07/2022] [Revised: 06/10/2022] [Accepted: 06/28/2022] [Indexed: 11/29/2022]
Abstract
Depression is a leading cause of disability which at its worst leads to suicide. Its treatment relies on psychotherapy in combination with certain antidepressants (AD(s)) from various classes such as tricyclics, selective serotonin reuptake inhibitors, or serotonin and norepinephrine reuptake inhibitors (SNRIs). Among SNRIs, venlafaxine (VEN) is one such most commonly prescribed AD which is recently reported to be in the top 50 most prescribed drugs in the USA. Depression during pregnancy is a common condition, where prescribing an AD becomes necessary as untreated depression during pregnancy has its own complications for both mother and the child. This, probably, is why an incredible rise has been reported in prescribing ADs like VEN to pregnant women in the recent past, despite some studies, including the one from our own group, having reported the in-utero VEN-induced apoptotic neurodegeneration in the fetal neocortex and the consequent neurobehavioral anomalies in adulthood. However, there still exists a lack of insight into the effects of intrauterine exposures of VEN on other fetal brain regions like the hippocampus (HPC) and striatum (STR) and the consequent effects on their cognitive and emotional wellbeing in later life. Hence, this study has been conducted where pregnant Charles-Foster (CF) rats were oral gavaged with VEN (25, 40, and 50 mg/kg bw) from gestation day (GD) 05-19. On GD-19, half of the control and treated dams were euthanized to collect their fetuses. Fetal brains were dissected and processed for reactive oxygen species (ROS) estimation neurohistopathology and confocal microscopic studies. The remaining dams were allowed to deliver naturally, and litters were reared for up to 8 weeks then tested for their cognitive abilities by the Morris water maze test and for their emotionality by the Forced swimming test. Our results showed substantial neurocytoarchitectural deficits in both HPC and STR, along with enhanced ROS levels and apoptotic neurodegenerations. Furthermore, VEN-treated young rat offsprings displayed cognitive impairments and depressive behavior as the long-lasting impact of VEN in a dose-dependent manner. So it may be inferred that prenatal VEN-induced oxidative stress causes apoptotic neurodegeneration leading to neuronal loss in HPC and STR which consequently affects the development of the said brain areas resulting in impaired cognitive and emotional abilities of young adult offsprings. Therefore, extrapolating these findings in animal models, caution may be taken before prescribing VEN to pregnant women, especially during the sensitive phase of pregnancy.
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Affiliation(s)
- K P Singh
- Neurobiology Lab, Department of Zoology, University of Allahabad, Prayagraj, 211002, UP, India.
| | - Prashant Sharma
- Chemical Biology Unit, Institute of Nano Science and Technology (INST), Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Manish Singh
- Chemical Biology Unit, Institute of Nano Science and Technology (INST), Knowledge City, Sector-81, Mohali, 140306, Punjab, India.
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Wang M, Li J, Cong W, Zhang J. Antimicrobial Mechanism and Secondary Metabolite Profiles of Biocontrol Agent Streptomyces lydicus M01 Based on Ultra-High-Performance Liquid Chromatography Connected to a Quadrupole Time-of-Flight Mass Spectrometer Analysis and Genome Sequencing. Front Microbiol 2022; 13:908879. [PMID: 35711789 PMCID: PMC9194905 DOI: 10.3389/fmicb.2022.908879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/04/2022] [Indexed: 11/15/2022] Open
Abstract
Streptomyces lydicus was used as biopesticide for crop protection in agriculture, however, the antimicrobial mechanism remains unclear and no systematic research on the secondary metabolites of S. lydicus has been reported. In this study, the extract of S. lydicus M01 culture was used to treat plant pathogen Alternaria alternata and morphological changes in the plasma membrane and cell wall of hyphae and conidia were observed. Fluorescence microscopy combined with different dyes showed that the accumulation of reactive oxygen species and cell death were also induced. To investigate the secondary metabolites in the culture filtrate, an online detection strategy of ultra-high-performance liquid chromatography connected to a quadrupole time-of-flight mass spectrometer (UPLC-Q-TOF-MS) was used for identification. The results revealed an excess of 120 metabolites, mainly consisted of fungicides, antibacterial agents, herbicides, insecticides, and plant growth regulators, such as IAA. Among which the five dominant components were oxadixyl, chloreturon, S-metolachlor, fentrazamide, and bucarpolate. On the other hand, the complete genome of S. lydicus M01 was sequenced and a number of key function gene clusters that contribute to the biosynthesis of active secondary metabolites were revealed. This is the first systematic characterization of S. lydicus secondary metabolites, and these results offer novel and valuable evidence for a comprehensive understanding of the biocontrol agent S. lydicus and its application in agriculture.
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Affiliation(s)
- Mingxuan Wang
- Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jing Li
- Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Wenjie Cong
- Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jianguo Zhang
- Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
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9
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McClusky LM. Several routes of cell death to secondary necrosis in the elasmobranch testis. Apoptosis 2022; 27:454-464. [PMID: 35672487 PMCID: PMC9308584 DOI: 10.1007/s10495-022-01733-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2022] [Indexed: 11/28/2022]
Abstract
The process of spermatogenesis features significant germ cell loss through apoptosis. Routine histology of the testes of well-studied animal models hardly discloses any trace of their phagocytic clearance by the supporting Sertoli cells. This review highlights lessons learnt from the cystic, diametric testes of some seasonally migrating elasmobranchs (e.g., spiny dogfish and blue sharks) that offer unconventional investigative paradigms to study these phenomena as these organs readily disclose a pronounced apoptosis gradient affecting exclusively spermatogonial clones that each are enclosed with their own Sertoli cells in spherical structures called spermatocysts. This gradient is visible at a certain time of year in the spermatogenically active shark, and peaks in mature spermatogonial cysts as clustered deaths with sporadic, and not massive secondary necrosis. Conversely, immature spermatogonial cysts in blue sharks reveal a characteristic periluminal display of single apoptotic deaths. Tracing aberrations in the immunostaining patterns of the conserved cell cycle marker, proliferating cell nuclear antigen, the gradual progression of the death process in individual or coalesced spermatogonia in contiguous cysts becomes clear. The multiple apoptotic nuclear fragmentation morphologies inform also of a protracted death process involving three different morphological routes of nuclear fragmentation (of which some are TUNEL-positive and other TUNEL-negative) and concomitant chromatin compaction that culminate in freed apoptotic bodies (i.e., secondary necrosis). It is discussed that the staggered spermatogonial deaths and accompanying intermittent secondary necrosis in mature blue shark spermatogonial cysts may well relate to the low phagocytosis capacity of cyst’s Sertoli cells that are still functionally naïve.
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Affiliation(s)
- Leon Mendel McClusky
- Anatomy Section, Department of Health & Care, Faculty of Health Sciences, UiT The Arctic University of Norway, Campus Narvik, Narvik, Norway.
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10
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Tice RR, Bassan A, Amberg A, Anger LT, Beal MA, Bellion P, Benigni R, Birmingham J, Brigo A, Bringezu F, Ceriani L, Crooks I, Cross K, Elespuru R, Faulkner DM, Fortin MC, Fowler P, Frericks M, Gerets HHJ, Jahnke GD, Jones DR, Kruhlak NL, Lo Piparo E, Lopez-Belmonte J, Luniwal A, Luu A, Madia F, Manganelli S, Manickam B, Mestres J, Mihalchik-Burhans AL, Neilson L, Pandiri A, Pavan M, Rider CV, Rooney JP, Trejo-Martin A, Watanabe-Sailor KH, White AT, Woolley D, Myatt GJ. In Silico Approaches In Carcinogenicity Hazard Assessment: Current Status and Future Needs. COMPUTATIONAL TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 20. [PMID: 35368437 DOI: 10.1016/j.comtox.2021.100191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Historically, identifying carcinogens has relied primarily on tumor studies in rodents, which require enormous resources in both money and time. In silico models have been developed for predicting rodent carcinogens but have not yet found general regulatory acceptance, in part due to the lack of a generally accepted protocol for performing such an assessment as well as limitations in predictive performance and scope. There remains a need for additional, improved in silico carcinogenicity models, especially ones that are more human-relevant, for use in research and regulatory decision-making. As part of an international effort to develop in silico toxicological protocols, a consortium of toxicologists, computational scientists, and regulatory scientists across several industries and governmental agencies evaluated the extent to which in silico models exist for each of the recently defined 10 key characteristics (KCs) of carcinogens. This position paper summarizes the current status of in silico tools for the assessment of each KC and identifies the data gaps that need to be addressed before a comprehensive in silico carcinogenicity protocol can be developed for regulatory use.
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Affiliation(s)
- Raymond R Tice
- RTice Consulting, Hillsborough, North Carolina, 27278, USA
| | | | - Alexander Amberg
- Sanofi Preclinical Safety, Industriepark Höchst, 65926 Frankfurt, Germany
| | - Lennart T Anger
- Genentech, Inc., South San Francisco, California, 94080, USA
| | - Marc A Beal
- Healthy Environments and Consumer Safety Branch, Health Canada, Government of Canada, Ottawa, Ontario, Canada K1A 0K9
| | | | | | - Jeffrey Birmingham
- GlaxoSmithKline, David Jack Centre for R&D, Ware, Hertfordshire, SG12 0DP, United Kingdom
| | - Alessandro Brigo
- Roche Pharmaceutical Research & Early Development, Pharmaceutical Sciences, Roche Innovation, Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | | | - Lidia Ceriani
- Humane Society International, 1000 Brussels, Belgium
| | - Ian Crooks
- British American Tobacco (Investments) Ltd, GR&D Centre, Southampton, SO15 8TL, United Kingdom
| | | | - Rosalie Elespuru
- Food and Drug Administration, Center for Devices and Radiological Health, Silver Spring, Maryland, 20993, USA
| | - David M Faulkner
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Marie C Fortin
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey, 08855, USA
| | - Paul Fowler
- FSTox Consulting (Genetic Toxicology), Northamptonshire, United Kingdom
| | | | | | - Gloria D Jahnke
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | | | - Naomi L Kruhlak
- Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, Maryland, 20993, USA
| | - Elena Lo Piparo
- Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | - Juan Lopez-Belmonte
- Cuts Ice Ltd Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | - Amarjit Luniwal
- North American Science Associates (NAMSA) Inc., Minneapolis, Minnesota, 55426, USA
| | - Alice Luu
- Healthy Environments and Consumer Safety Branch, Health Canada, Government of Canada, Ottawa, Ontario, Canada K1A 0K9
| | - Federica Madia
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Serena Manganelli
- Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | | | - Jordi Mestres
- IMIM Institut Hospital Del Mar d'Investigacions Mèdiques and Universitat Pompeu Fabra, Doctor Aiguader 88, Parc de Recerca Biomèdica, 08003 Barcelona, Spain; and Chemotargets SL, Baldiri Reixac 4, Parc Científic de Barcelona, 08028, Barcelona, Spain
| | | | - Louise Neilson
- Broughton Nicotine Services, Oak Tree House, Earby, Lancashire, BB18 6JZ United Kingdom
| | - Arun Pandiri
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | | | - Cynthia V Rider
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | - John P Rooney
- Integrated Laboratory Systems, LLC., Morrisville, North Carolina, 27560, USA
| | | | - Karen H Watanabe-Sailor
- School of Mathematical and Natural Sciences, Arizona State University, West Campus, Glendale, Arizona, 85306, USA
| | - Angela T White
- GlaxoSmithKline, David Jack Centre for R&D, Ware, Hertfordshire, SG12 0DP, United Kingdom
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Usnic Acid and Usnea barbata (L.) F.H. Wigg. Dry Extracts Promote Apoptosis and DNA Damage in Human Blood Cells through Enhancing ROS Levels. Antioxidants (Basel) 2021; 10:antiox10081171. [PMID: 34439420 PMCID: PMC8388874 DOI: 10.3390/antiox10081171] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/17/2021] [Accepted: 07/19/2021] [Indexed: 12/16/2022] Open
Abstract
Nowadays, numerous biomedical studies performed on natural compounds and plant extracts aim to obtain highly selective pharmacological activities without unwanted toxic effects. In the big world of medicinal plants, Usnea barbata (L) F.H. Wigg (U. barbata) and usnic acid (UA) are well-known for their therapeutical properties. One of the most studied properties is their cytotoxicity on various tumor cells. This work aims to evaluate their cytotoxic potential on normal blood cells. Three dry U. barbata extracts in various solvents: ethyl acetate (UBEA), acetone (UBA), and ethanol (UBE) were prepared. From UBEA we isolated usnic acid with high purity by semipreparative chromatography. Then, UA, UBA, and UBE dissolved in 1% dimethyl sulfoxide (DMSO) and diluted in four concentrations were tested for their toxicity on human blood cells. The blood samples were collected from a healthy non-smoker donor; the obtained blood cell cultures were treated with the tested samples. After 24 h, the cytotoxic effect was analyzed through the mechanisms that can cause cell death: early and late apoptosis, caspase 3/7 activity, nuclear apoptosis, autophagy, reactive oxygen species (ROS) level and DNA damage. Generally, the cytotoxic effect was directly proportional to the increase of concentrations, usnic acid inducing the most significant response. At high concentrations, usnic acid and U. barbata extracts induced apoptosis and DNA damage in human blood cells, increasing ROS levels. Our study reveals the importance of prior natural products toxicity evaluation on normal cells to anticipate their limits and benefits as potential anticancer drugs.
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Moghadam MN, Khaledi EM. Antibacterial activity and mechanism of action of some Iranian honeys compared to manuka honey against multidrug-resistant respiratory and urinary infections. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Selective Anti-Cancer Effects of Plasma-Activated Medium and Its High Efficacy with Cisplatin on Hepatocellular Carcinoma with Cancer Stem Cell Characteristics. Int J Mol Sci 2021; 22:ijms22083956. [PMID: 33921230 PMCID: PMC8069277 DOI: 10.3390/ijms22083956] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/26/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a major histological subtype of primary liver cancer. Ample evidence suggests that the pathological properties of HCC originate from hepatic cancer stem cells (CSCs), which are responsible for carcinogenesis, recurrence, and drug resistance. Cold atmospheric-pressure plasma (CAP) and plasma-activated medium (PAM) induce apoptosis in cancer cells and represent novel and powerful anti-cancer agents. This study aimed to determine the anti-cancer effect of CAP and PAM in HCC cell lines with CSC characteristics. We showed that the air-based CAP and PAM selectively induced cell death in Hep3B and Huh7 cells with CSC characteristics, but not in the normal liver cell line, MIHA. We observed both caspase-dependent and -independent cell death in the PAM-treated HCC cell lines. Moreover, we determined whether combinatorial PAM therapy with various anti-cancer agents have an additive effect on cell death in Huh7. We found that PAM highly increased the efficacy of the chemotherapeutic agent, cisplatin, while enhanced the anti-cancer effect of doxorubicin and the targeted-therapy drugs, trametinib and sorafenib to a lesser extent. These findings support the application of CAP and PAM as anti-cancer agents to induce selective cell death in cancers containing CSCs, suggesting that the combinatorial use of PAM and some specific anti-cancer agents is complemented mechanistically.
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Le Berre L, Chesneau M, Danger R, Dubois F, Chaussabel D, Garand M, Brouard S. Connection of BANK1, Tolerance, Regulatory B cells, and Apoptosis: Perspectives of a Reductionist Investigation. Front Immunol 2021; 12:589786. [PMID: 33815360 PMCID: PMC8015775 DOI: 10.3389/fimmu.2021.589786] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/06/2021] [Indexed: 12/07/2022] Open
Abstract
BANK1 transcript is upregulated in whole blood after kidney transplantation in tolerant patients. In comparison to patients with rejection, tolerant patients display higher level of regulatory B cells (Bregs) expressing granzyme B (GZMB+) that have the capability to prevent effector T cells proliferation. However, BANK1 was found to be decreased in these GZMB+ Bregs. In this article, we investigated seven different transcriptomic studies and mined the literature in order to make link between BANK1, tolerance and Bregs. As for GZMB+ Bregs, we found that BANK1 was decreased in other subtypes of Bregs, including IL10+ and CD24hiCD38hi transitional regulatory B cells, along with BANK1 was down-regulated in activated/differentiated B cells, as in CD40-activated B cells, in leukemia and plasma cells. Following a reductionist approach, biological concepts were extracted from BANK1 literature and allowed us to infer association between BANK1 and immune signaling pathways, as STAT1, FcγRIIB, TNFAIP3, TRAF6, and TLR7. Based on B cell signaling literature and expression data, we proposed a role of BANK1 in B cells of tolerant patients that involved BCR, IP3R, and PLCG2, and a link with the apoptosis pathways. We confronted these data with our experiments on apoptosis in total B cells and Bregs, and this suggests different involvement for BANK1 in these two cells. Finally, we put in perspective our own data with other published data to hypothesize two different roles for BANK1 in B cells and in Bregs.
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Affiliation(s)
- Ludmilla Le Berre
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Mélanie Chesneau
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Richard Danger
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Florian Dubois
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | | | - Mathieu Garand
- Systems Biology and Immunology, Sidra Medicine, Doha, Qatar
| | - Sophie Brouard
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
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15
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Liu J, Guo M, Fan X. Ethanol induces necroptosis in gastric epithelial cells in vitro. J Food Biochem 2021; 45:e13692. [PMID: 33686694 DOI: 10.1111/jfbc.13692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 02/19/2021] [Accepted: 02/21/2021] [Indexed: 11/27/2022]
Abstract
The stomach frequently suffers from acute gastric diseases after excessive ingestion of high-concentration alcoholic beverages, but little is known about the pathological mechanism by which ethanol affects the gastric mucosa. The aim of this study was to explore the mechanism of gastric epithelial cell death induced by relatively high concentrations of ethanol in vitro. Ethanol was demonstrated to induce rapid cell death in a concentration-dependent manner (Spearman r = .943, p = .017) and to activate the phosphorylation of key mediators in necroptosis pathway without influencing the key mediators in apoptosis pathway. The receptor-interacting serine-threonine kinase 1 (RIP1) kinase inhibitor necrostatin-1s (nec-1s) was found to reverse necroptotic cell death (from 65.5% necrosis to 35.8% necrosis, p = .006) and to inhibit the formation of necrosome complexes. These results indicate necroptosis rather than apoptosis pathway is an essential mechanism and is a novel therapeutic target in acute alcoholic gastric diseases. PRACTICAL APPLICATIONS: Alcohol consumption is related with a variety of diseases in many organs, but its pathological mechanism might be quite different due to the exposure extent between the stomach and other organs. Although there have been plenty of studies on alcoholic liver diseases and those in other organs, the pathological mechanism of alcoholic gastric diseases has been poorly investigated. Considering the unique distribution of ethanol on gastric mucosa, it is worthwhile to explore the specific cell death pattern of gastric epithelial cells under high-concentration ethanol treatment. Further investigation of the mechanisms of alcoholic gastric diseases would provide potential therapeutic strategies for the treatment of acute alcoholic gastric diseases as well as other acute alcoholic diseases.
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Affiliation(s)
- Jianning Liu
- State Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China.,Xi'an Gaoxin No. 1 High School, Xi'an, China
| | - Meng Guo
- State Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Xiaotong Fan
- State Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
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Li Z, Zhou X, Zhu H, Song X, Gao H, Niu Z, Lu J. Purpurin binding interacts with LHPP protein that inhibits PI3K/AKT phosphorylation and induces apoptosis in colon cancer cells HCT-116. J Biochem Mol Toxicol 2021; 35:e22665. [PMID: 33368780 DOI: 10.1002/jbt.22665] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/22/2020] [Accepted: 10/20/2020] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) is the leading type of diagnosed cancer; globally, it resides in the fourth-leading origin of cancer-interrelated mortality in the globe. The treatment strategies were chemotherapy and potent radiotherapy. Although chemotherapy treatment can eliminate tumor cells, it remains with unnecessary toxic effects in cancer patients. Therefore, the identification of natural-based compounds, which have selectively inhibiting target proteins with limited toxicity that can facilitate the therapeutic approaches against CRC. In this existing approach, which highlights the binding efficacy of our anthraquinone compound, purpurin against phospholysine phosphohistidine inorganic pyrophosphate phosphatase (LHPP) protein restrains the CRC cell growth by inhibiting phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT), cell proliferation, and inducing apoptosis signaling. Primarily, purpurin (36 μM) exposed to HCT-116 cells and incubated for 24 and 48 h could induce reactive oxygen species production, subsequently alter mitochondrion membrane, and increase the apoptotic cells in HCT-116. LHPP, a kind of histidine phosphatase protein, has been considered as a tumor suppressor in numerous carcinomas. However, purpurin-mediated LHPP proteins and its associated molecular events in CRC remain unclear. In our docking studies revealed that purpurin has been strongly interacts with LHPP via hydrophobic and hydrophilic binding interaction. Western blot results confirmed that purpurin enhances the expression of LHPP protein, thereby inhibits the expression of phosphorylated-PI3K/AKT, EGFR, cyclin-D1, PCNA in HCT-116 cells. Moreover, purpurin induces messenger RNA expression of apoptotic genes (Bax, CASP-9, and CASP-3) in HCT-116 cells. Thus, we conclude that purpurin could be a natural and useful compound, which inhibits the growth of CRC cells through the activation of LHPP proteins.
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Affiliation(s)
- Zhiwen Li
- Department of Colorectal and Anal Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Xu Zhou
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Huaqiang Zhu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Xie Song
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Hengjun Gao
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Zheyu Niu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
| | - Jun Lu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China
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Pamidimukkala K, Rani Inala M. Amalgamation of quercetin with anastrozole and capecitabine: A novel combination to treat breast and colon cancers – An in vitro study. J Cancer Res Ther 2021; 19:S93-S105. [PMID: 37147989 DOI: 10.4103/jcrt.jcrt_599_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Context Globally, cancer stands as the principle cause of mortality and immediate attention on its treatment options is required. Natural compounds stay at first priority in encountering novel therapeutics without adverse effects. Aim The aim of the study is to extract flavonol quercetin from leafy vegetables of Anethum graveolens L. and Raphanus sativus L. and find out its potential in combination with drugs used for chemotherapy to reduce the adverse effects of drugs. Settings and Design Observational study. Materials And Methods Column chromatography is used for quercetin extraction and anticancer activity of quercetin + anastrozole and quercetin + capecitabine were determined by (4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide assay (MTT), apoptosis assay, cell cycle analysis, mitochondrial membrane potential, and caspase 3 expression. Statistical Analysis Used Cytotoxic assay results were assessed by mean, standard deviation and ANOVA; and results were compared for determining its significance. Results The results noted that quercetin at very less concentration (16 and 31 μg/ml on Michigan Cancer Foundation-7 and 43 and 46 μg/ml on COLO 320) in combination with anastrozole and capecitabine was able to control the growth of cells, increase cell death, arrest cell cycle, and induce mitochondrial depolarization and expression of caspase 3. Conclusions The natural compound used in the present study is effective in treating breast and colon cancer at minimal concentrations in combination with the drugs. This combinational treatment appears to be reported for the first time in the present study.
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Mastalarz H, Mastalarz A, Wietrzyk J, Milczarek M, Kochel A, Regiec A. Synthesis of Platinum(II) Complexes with Some 1-Methylnitropyrazoles and In Vitro Research on Their Cytotoxic Activity. Pharmaceuticals (Basel) 2020; 13:ph13120433. [PMID: 33260497 PMCID: PMC7768359 DOI: 10.3390/ph13120433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/01/2022] Open
Abstract
A series of eight novel platinum(II) complexes were synthesized by the reaction of the appropriate 1-methylnitropyrazole derivatives with K2PtCl4 and characterized by elemental analysis, ESI MS spectrometry, 1H NMR, 195Pt NMR, IR and far IR spectroscopy. Thermal isomerization of cis-dichloridobis(1-methyl-4-nitropyrazole)platinum(II) 1 to trans-dichloridobis(1-methyl-4-nitropyrazole)platinum(II) 2 has been presented, and the structure of the compound 2 has been confirmed by X-ray diffraction method. Cytotoxicity of the investigated compounds was examined in vitro on three human cancer cell lines (MCF-7 breast, ES-2 ovarian and A-549 lung adenocarcinomas) and their logP was measured using a shake-flask method. The trans complex 2 showed better antiproliferative activity than cisplatin for all the tested cancer cell lines. Additionally, trans-dichloridobis(1-methyl-5-nitropyrazole)platinum(II) 4 has featured a lower IC50 value than reference cisplatin against MCF-7 cell line. To gain additional information that may facilitate the explanation of the mode of action of tested compounds cellular platinum uptake, stability in L-glutathione solution, influence on cell cycle progression of HL-60 cells and ability to apoptosis induction were determined for compounds 1 and 2.
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Affiliation(s)
- Henryk Mastalarz
- Department of Organic Chemistry, Faculty of Pharmacy, Wrocław Medical University, 211A Borowska Street, 50-556 Wrocław, Poland;
- Correspondence: ; Tel.: +48-717840347; Fax: +48-717840341
| | - Agnieszka Mastalarz
- Faculty of Chemistry, The University of Wrocław, 14F Joliot-Curie Street, 50-383 Wrocław, Poland; (A.M.); (A.K.)
| | - Joanna Wietrzyk
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl Street, 53-114 Wrocław, Poland; (J.W.); (M.M.)
| | - Magdalena Milczarek
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 Rudolf Weigl Street, 53-114 Wrocław, Poland; (J.W.); (M.M.)
| | - Andrzej Kochel
- Faculty of Chemistry, The University of Wrocław, 14F Joliot-Curie Street, 50-383 Wrocław, Poland; (A.M.); (A.K.)
| | - Andrzej Regiec
- Department of Organic Chemistry, Faculty of Pharmacy, Wrocław Medical University, 211A Borowska Street, 50-556 Wrocław, Poland;
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Kalpage HA, Wan J, Morse PT, Lee I, Hüttemann M. Brain-Specific Serine-47 Modification of Cytochrome c Regulates Cytochrome c Oxidase Activity Attenuating ROS Production and Cell Death: Implications for Ischemia/Reperfusion Injury and Akt Signaling. Cells 2020; 9:E1843. [PMID: 32781572 PMCID: PMC7465522 DOI: 10.3390/cells9081843] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/31/2020] [Accepted: 08/03/2020] [Indexed: 02/06/2023] Open
Abstract
We previously reported that serine-47 (S47) phosphorylation of cytochrome c (Cytc) in the brain results in lower cytochrome c oxidase (COX) activity and caspase-3 activity in vitro. We here analyze the effect of S47 modification in fibroblast cell lines stably expressing S47E phosphomimetic Cytc, unphosphorylated WT, or S47A Cytc. Our results show that S47E Cytc results in partial inhibition of mitochondrial respiration corresponding with lower mitochondrial membrane potentials (ΔΨm) and reduced reactive oxygen species (ROS) production. When exposed to an oxygen-glucose deprivation/reoxygenation (OGD/R) model simulating ischemia/reperfusion injury, the Cytc S47E phosphomimetic cell line showed minimal ROS generation compared to the unphosphorylated WT Cytc cell line that generated high levels of ROS upon reoxygenation. Consequently, the S47E Cytc cell line also resulted in significantly lower cell death upon exposure to OGD/R, confirming the cytoprotective role of S47 phosphorylation of Cytc. S47E Cytc also resulted in lower cell death upon H2O2 treatment. Finally, we propose that pro-survival kinase Akt (protein kinase B) is a likely mediator of the S47 phosphorylation of Cytc in the brain. Akt inhibitor wortmannin abolished S47 phosphorylation of Cytc, while the Akt activator SC79 maintained S47 phosphorylation of Cytc. Overall, our results suggest that loss of S47 phosphorylation of Cytc during brain ischemia drives reperfusion injury through maximal electron transport chain flux, ΔΨm hyperpolarization, and ROS-triggered cell death.
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Affiliation(s)
- Hasini A. Kalpage
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA; (H.A.K.); (J.W.); (P.T.M.)
| | - Junmei Wan
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA; (H.A.K.); (J.W.); (P.T.M.)
| | - Paul T. Morse
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA; (H.A.K.); (J.W.); (P.T.M.)
| | - Icksoo Lee
- College of Medicine, Dankook University, Cheonan-si, Chungcheongnam-do 31116, Korea;
| | - Maik Hüttemann
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA; (H.A.K.); (J.W.); (P.T.M.)
- Department of Biochemistry, Microbiology and Immunology, Wayne State University, Detroit, MI 48201, USA
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20
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Badran A, tul-Wahab A, Zafar H, Mohammad N, Imad R, Ashfaq Khan M, Baydoun E, Choudhary MI. Antipsychotics drug aripiprazole as a lead against breast cancer cell line (MCF-7) in vitro. PLoS One 2020; 15:e0235676. [PMID: 32746451 PMCID: PMC7398703 DOI: 10.1371/journal.pone.0235676] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 06/21/2020] [Indexed: 11/19/2022] Open
Abstract
Breast cancer is the second leading cause of death among women globally. The existing treatment options for breast cancer are largely associated with severe toxicities, and lower efficacies. Therefore, there is an urgent need for the development of non-toxic effective drugs against breast cancer. For this purpose, drug repositioning strategy was used to evaluate the anti-cancer potential of a library of heterocyclic drugs. The major advantage of drug repurposing is that the pharmacokinetic, pharmacodynamic, and toxicity profiles of drugs are well documented. In the current study, we screened 97 drugs of different chemical classes, and among them aripiprazole, an antipsychotic drug, was found to be sufficiently active against breast cancer cell line MCF-7. Aripiprazole showed a cytotoxicity (IC50 = 12.1 ± 0.40 μM) to MCF-7 cells, comparable to the standard anticancer drug doxorubicin (IC50 = 1.25 ± 0.34 μM). Aripiprazole was also found to be active against other cancer cell lines, including MDA-MB-231 (IC50 = 19.83 ± 0.27 μM), AU565 (IC50 = 18.02 ± 0.44 μM), and BT-474 (IC50 = 36.42 ± 0.12 μM). Aripiprazole significantly inhibited the cell cycle progression at subG0G1 phase, and enhanced apoptosis in MCF-7 breast cancer cells. The drug was also able to significantly increase the nuclear condensation, and modulated the expression of certain genes involved in breast cancer, such as caspases 3, and 9, BAK-1, C-MYC, BCL2L1, BCL-10, and BCL-2. Further studies are needed to explore the effect of aripiprazole on intrinsic and extrinsic pathways of apoptosis in cancer cells.
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Affiliation(s)
- Adnan Badran
- Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Atia tul-Wahab
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Humaira Zafar
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Nayab Mohammad
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Rehan Imad
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Mariam Ashfaq Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Elias Baydoun
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - M. Iqbal Choudhary
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
- Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Surabaya, Indonesia
- * E-mail:
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21
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Hsu WY, Masuda T, Afonin S, Sakai T, Arafiles JVV, Kawano K, Hirose H, Imanishi M, Ulrich AS, Futaki S. Enhancing the activity of membrane remodeling epsin-peptide by trimerization. Bioorg Med Chem Lett 2020; 30:127190. [PMID: 32317210 DOI: 10.1016/j.bmcl.2020.127190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/08/2020] [Accepted: 04/11/2020] [Indexed: 12/13/2022]
Abstract
Modulating the structural dynamics of biomembranes by inducing bilayer curvature and lipid packing defects has been highlighted as a practical tool to modify membrane-dependent cellular processes. Previously, we have reported on an amphipathic helical peptide derived from the N-terminal segment (residues 1-18, EpN18) of epsin-1, which can promote membrane remodeling including lipid packing defects in cell membranes. However, a high concentration is required to exhibit a pronounced effect. In this study, we demonstrate a significant increase in the membrane-remodeling effect of EpN18 by constructing a branched EpN18 homotrimer. Both monomer and trimer could enhance cell internalization of octaarginine (R8), a cell-penetrating peptide. The EpN18 trimer, however, promoted the uptake of R8 at an 80-fold lower concentration than the monomer. Analysis of the generalized polarization of a polarity-sensitive dye (di-4-ANEPPDHQ) revealed a higher efficacy of trimeric EpN18 in loosening the lipid packing in the cell membrane. Circular dichroism measurements in the presence of lipid vesicles showed that the EpN18 trimer has a higher α-helix content compared with the monomer. The stronger ability of the EpN18 trimer to impede negative bilayer curvature is also corroborated by solid-state 31P NMR spectroscopy. Hence, trimerizing peptides can be considered a promising approach for an exponential enhancement of their membrane-remodeling performance.
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Affiliation(s)
- Wei-Yuan Hsu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Toshihiro Masuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O.B. 3640, 76021 Karlsruhe, Germany
| | - Takayuki Sakai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | | | - Kenichi Kawano
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hisaaki Hirose
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Miki Imanishi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Anne S Ulrich
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O.B. 3640, 76021 Karlsruhe, Germany; Institute of Organic Chemistry (IOC), KIT, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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22
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Maklad RM, AbdelHafez ESMN, Abdelhamid D, Aly OM. Tubulin inhibitors: Discovery of a new scaffold targeting extra-binding residues within the colchicine site through anchoring substituents properly adapted to their pocket by a semi-flexible linker. Bioorg Chem 2020; 99:103767. [PMID: 32325332 DOI: 10.1016/j.bioorg.2020.103767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 03/06/2020] [Accepted: 03/15/2020] [Indexed: 02/08/2023]
Abstract
Bis-hydrazides 13a-h were designed and synthesized as potential tubulin inhibitors selectively targeting the colchicine site between α- and β-tubulin subunits. The newly designed ring-B substituents were assisted at their ends by 'anchor groups' which are expected to exert binding interaction(s) with new additional amino acid residues in the colchicine site (beyond those amino acids previously reported to interact with reference inhibitors as CA-4 and colchicine). Conformational flexibility of bis-hydrazide linker assisted these 'extra-binding' properties through reliving ligands' strains in the final ligand-receptor complexes. Compound 13f displayed the most promising computational and biological study results in the series: MM/GBSA binding energy of -62.362 kcal/mol (extra-binding to Arg α:221, Thr β:353 & Lys β:254); 34% NCI-H522 cells' death (at 10 µM), IC50 = 0.073 µM (MTT assay); significant cell cycle arrest at G2/M phase; 11.6% preG1 apoptosis induction and 83.1% in vitro tubulin inhibition (at concentration = IC50). Future researchers in bis-hydrazide tubulin inhibitors are advised to consider the 2-chloro-N-(4-substituted-phenyl)acetamide derivatives as compound 13f due to extra-binding properties of their ring B.
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Affiliation(s)
- Raed M Maklad
- Institute of Drug Discovery and Development, Kafrelsheikh University, Kafrelsheikh, Egypt; Pharmaceutical Chemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt; Zewail City of Science and Technology, 6th of October, Giza, Egypt.
| | | | - Dalia Abdelhamid
- Medicinal Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Omar M Aly
- Medicinal Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
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23
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Biopolymer K-carrageenan wrapped ZnO nanoparticles as drug delivery vehicles for anti MRSA therapy. Int J Biol Macromol 2019; 144:9-18. [PMID: 31821826 DOI: 10.1016/j.ijbiomac.2019.12.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/19/2019] [Accepted: 12/04/2019] [Indexed: 02/03/2023]
Abstract
Kappa-Carrageenan wrapped ZnO nanoparticles (KC-ZnO NPs) was synthesized, physico-chemically characterized and evaluated their biocompatibility and antimicrobial therapy against MRSA. XRD showed the highly crystalline and hexagonal phase structure of ZnO NPs. FETEM confirmed the spherical and hexagonal shaped particle with the mean size of 97.03 ± 9.05 nm. The synthesized KC-ZnO NPs exhibited significant antibacterial activity against MRSA. The biofilm growth of MRSA was greatly inhibited at 100 μg/ml as observed through live and dead cell assay. KC-ZnO NPs have shown invitro anti-inflammatory activity (82%) at 500 μg/ml. KC-ZnO NPs was non-toxic to NIH3T3 mouse embryonic fibroblasts cell lines. Further, no apoptotic and necrotic mediated death in NIH3T3 mouse embryonic fibroblasts cells were noticed by flow cytometric analysis. KC-ZnO NPs have good biocompatibility as recorded by the least hemolysis percentage (<3%) up to 100 μg/ml, which is much lesser than the acceptable limit. In addition, ecosafety analysis has shown that KC-ZnO NPs and kappa karrageenan (0-500 μg/ml) caused no mortality of A. salina after 48 h. However, bare zinc acetate has shown 35% mortality of A. salina after 48 h. The results conclude that KC-ZnO NPs could be a novel antibacterial therapy for the treatment of MRSA associated infectious.
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24
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Plotnikova MA, Klotchenko SA, Kiselev AA, Gorshkov AN, Shurygina APS, Vasilyev KA, Uciechowska-Kaczmarzyk U, Samsonov SA, Kovalenko AL, Vasin AV. Meglumine acridone acetate, the ionic salt of CMA and N-methylglucamine, induces apoptosis in human PBMCs via the mitochondrial pathway. Sci Rep 2019; 9:18240. [PMID: 31796757 PMCID: PMC6890692 DOI: 10.1038/s41598-019-54208-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 11/04/2019] [Indexed: 01/16/2023] Open
Abstract
Meglumine acridone acetate (MA) is used in Russia for the treatment of influenza and other acute respiratory viral infections. It was assumed, until recently, that its antiviral effect was associated with its potential ability to induce type I interferon. Advanced studies, however, have shown the failure of 10-carboxymethyl-9-acridanone (CMA) to activate human STING. As such, MA’s antiviral properties are still undergoing clarification. To gain insight into MA’s mechanisms of action, we carried out RNA-sequencing analysis of global transcriptomes in MA-treated (MA+) human peripheral blood mononuclear cells (PBMCs). In response to treatment, approximately 1,223 genes were found to be differentially expressed, among which 464 and 759 were identified as either up- or down-regulated, respectively. To clarify the cellular and molecular processes taking place in MA+ cells, we performed a functional analysis of those genes. We have shown that evident MA subcellular localizations are: at the nuclear envelope; inside the nucleus; and diffusely in perinuclear cytoplasm. Postulating that MA may be a nuclear receptor agonist, we carried out docking simulations with PPARα and RORα ligand binding domains including prediction and molecular dynamics-based analysis of potential MA binding poses. Finally, we confirmed that MA treatment enhanced nuclear apoptosis in human PBMCs. The research presented here, in our view, indicates that: (i) MA activity is mediated by nuclear receptors; (ii) MA is a possible PPARα and/or RORα agonist; (iii) MA has an immunosuppressive effect; and (iv) MA induces apoptosis through the mitochondrial signaling pathway.
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Affiliation(s)
| | | | - Artem A Kiselev
- Almazov National Medical Research Centre, St. Petersburg, Russia
| | - Andrey N Gorshkov
- Smorodintsev Research Institute of Influenza, St. Petersburg, Russia
| | | | - Kirill A Vasilyev
- Smorodintsev Research Institute of Influenza, St. Petersburg, Russia
| | | | | | - Alexey L Kovalenko
- Institute of Toxicology, Federal Medical-Biological Agency of Russia, St. Petersburg, Russia
| | - Andrey V Vasin
- Smorodintsev Research Institute of Influenza, St. Petersburg, Russia.,Institute of Biomedical Systems and Botechnologies, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.,Saint Petersburg State Chemical Pharmaceutical University, St. Petersburg, Russia
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25
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Bobylev AG, Kraevaya OA, Bobyleva LG, Khakina EA, Fadeev RS, Zhilenkov AV, Mishchenko DV, Penkov NV, Teplov IY, Yakupova EI, Vikhlyantsev IM, Troshin PA. Anti-amyloid activities of three different types of water-soluble fullerene derivatives. Colloids Surf B Biointerfaces 2019; 183:110426. [PMID: 31421408 DOI: 10.1016/j.colsurfb.2019.110426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/16/2019] [Accepted: 08/04/2019] [Indexed: 01/21/2023]
Abstract
Anti-amyloid activity, aggregation behaviour, cytotoxicity and acute toxicity were investigated for three water-soluble fullerene derivatives with different types of solubilizing addends. All investigated compounds showed a strong anti-amyloid effect in vitrocaused by interaction of the water-soluble fullerene derivatives with the Ab(1-42)-peptide and followed by destruction of the amyloid fibrils. Notably, all of the studied fullerene derivatives showed very low cytotoxicity and low acute toxicity in mice (most promising compound 3 was more than four times less toxic than aspirin). Strong anti-amyloid effect of the fullerene derivatives together with low toxicity reveals high potential of these compounds as drug candidates for treatment of neurodegenerative diseases.
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Affiliation(s)
- Alexander G Bobylev
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290, Russia
| | - Olga A Kraevaya
- Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russia; Institute for Problems of Chemical Physics of the Russian Academy of Sciences, Semenov Prospect 1, Chernogolovka, 141432, Russia
| | - Liya G Bobyleva
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290, Russia
| | - Ekaterina A Khakina
- Institute for Problems of Chemical Physics of the Russian Academy of Sciences, Semenov Prospect 1, Chernogolovka, 141432, Russia
| | - Roman S Fadeev
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290, Russia
| | - Alexander V Zhilenkov
- Institute for Problems of Chemical Physics of the Russian Academy of Sciences, Semenov Prospect 1, Chernogolovka, 141432, Russia
| | - Denis V Mishchenko
- Institute for Problems of Chemical Physics of the Russian Academy of Sciences, Semenov Prospect 1, Chernogolovka, 141432, Russia
| | - Nikita V Penkov
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya St., 3, Pushchino, Moscow Region, 142290, Russia
| | - Ilia Y Teplov
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya St., 3, Pushchino, Moscow Region, 142290, Russia
| | - Elmira I Yakupova
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290, Russia
| | - Ivan M Vikhlyantsev
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290, Russia
| | - Pavel A Troshin
- Skolkovo Institute of Science and Technology, Nobel St. 3, Moscow, 143026, Russia; Institute for Problems of Chemical Physics of the Russian Academy of Sciences, Semenov Prospect 1, Chernogolovka, 141432, Russia.
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26
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Jiao L, Zhang X, Cui J, Peng X, Song F. Three-in-One Functional Silica Nanocarrier with Singlet Oxygen Generation, Storage/Release, and Self-Monitoring for Enhanced Fractional Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25750-25757. [PMID: 31245990 DOI: 10.1021/acsami.9b08371] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
At present, the intermittent photodynamic therapy (fractional PDT) for overcoming tumor hypoxia still have their own defects, such as irradiation-dependence and rapid metabolism of organic photosensitizers. Therefore, it is still a really formidable challenge to achieve efficient fractional PDT. Herein, a three-in-one functional silica nanocarrier (FSNC) with singlet oxygen (1O2) generating unit (protoporphyrin IX derivative), 1O2 storage/release unit (2-pyridone derivative), and 1O2 self-monitoring unit (cyanine derivative) was prepared by reverse microemulsion method. Also, it could be efficiently internalized in the HeLa cells because of an appropriate particle size (∼44.8 nm). In the presence of light, the endoperoxide is formed to achieve 1O2 storage together with 1O2 generated by 1O2 generating unit for traditional PDT. In the absence of light, the endoperoxide produces 1O2 through cycloreversion for continuous PDT. As a result, the fractional PDT process of the FSNC on the HeLa cells performed a higher phototoxicity than traditional photosensitizer protoporphyrin IX. Furthermore, this real-time release behavior of 1O2 can be visually captured by confocal laser scanning microscope via monitoring fluorescent bleaching of 1O2 self-monitoring unit. Therefore, this fluorescent imaging-guided fractional PDT process could effectively enhance the PDT effect compared with traditional PDT.
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Affiliation(s)
- Long Jiao
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , No. 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Xiaoye Zhang
- Marine Engineering College , Dalian Maritime University , No. 1 Linghai Road, High-tech District , Dalian 116026 , P. R. China
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , No. 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , No. 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
| | - Fengling Song
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , No. 2 Linggong Road, High-tech District , Dalian 116024 , P. R. China
- Institute of Molecular Sciences and Engineering , Shandong University , Qingdao 266237 , P. R. China
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27
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Liu D, García-López V, Gunasekera RS, Greer Nilewski L, Alemany LB, Aliyan A, Jin T, Wang G, Tour JM, Pal R. Near-Infrared Light Activates Molecular Nanomachines to Drill into and Kill Cells. ACS NANO 2019; 13:6813-6823. [PMID: 31117378 DOI: 10.1021/acsnano.9b01556] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using two-photon excitation (2PE), molecular nanomachines (MNMs) are able to drill through cell membranes and kill the cells. This avoids the use of the more damaging ultraviolet light that has been used formerly to induce this nanomechanical cell-killing effect. Since 2PE is inherently confocal, enormous precision can be realized. The MNMs can be targeted to specific cell surfaces through peptide addends. Further, the efficacy was verified through a controlled opening of synthetic bilayer vesicles using the 2PE excitation of MNM that had been trapped within the vesicles.
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Affiliation(s)
| | | | | | | | | | | | - Tao Jin
- Department of Chemistry , North Carolina State University , Raleigh , North Carolina 27695-8204 , United States
| | - Gufeng Wang
- Department of Chemistry , North Carolina State University , Raleigh , North Carolina 27695-8204 , United States
| | | | - Robert Pal
- Department of Chemistry , Durham University , South Road , DH1 3LE Durham , United Kingdom
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28
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Ahmed R, Akcan M, Khondker A, Rheinstädter MC, Bozelli JC, Epand RM, Huynh V, Wylie RG, Boulton S, Huang J, Verschoor CP, Melacini G. Atomic resolution map of the soluble amyloid beta assembly toxic surfaces. Chem Sci 2019; 10:6072-6082. [PMID: 31360412 PMCID: PMC6585597 DOI: 10.1039/c9sc01331h] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 05/19/2019] [Indexed: 12/11/2022] Open
Abstract
Atomic resolution map of the soluble amyloid beta assembly (Aβn) “toxic surfaces” that facilitate the early pathogenic events in Alzheimer's disease (AD).
Soluble amyloid beta assemblies (Aβn) are neurotoxic and play a central role in the early phases of the pathogenesis cascade leading to Alzheimer's disease. However, the current knowledge about the molecular determinants of Aβn toxicity is at best scant. Here, we comparatively analyze Aβn prepared in the absence or presence of a catechin library that modulates cellular toxicity. By combining solution NMR with dynamic light scattering, fluorescence spectroscopy, electron microscopy, wide-angle X-ray diffraction and cell viability assays, we identify a cluster of unique molecular signatures that distinguish toxic vs. nontoxic Aβ assemblies. These include the exposure of a hydrophobic surface spanning residues 17–28 and the concurrent shielding of the highly charged N-terminus. We show that the combination of these two dichotomous structural transitions promotes the colocalization and insertion of β-sheet rich Aβn into the membrane, compromising membrane integrity. These previously elusive toxic surfaces mapped here provide an unprecedented foundation to establish structure-toxicity relationships of Aβ assemblies.
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Affiliation(s)
- Rashik Ahmed
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada .
| | - Michael Akcan
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada .
| | - Adree Khondker
- Department of Physics and Astronomy , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - Maikel C Rheinstädter
- Department of Physics and Astronomy , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - José C Bozelli
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada .
| | - Richard M Epand
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada .
| | - Vincent Huynh
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - Ryan G Wylie
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - Stephen Boulton
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada .
| | - Jinfeng Huang
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - Chris P Verschoor
- Department of Health Research Methods, Evidence, and Impact (HEI) , McMaster University , Hamilton , ON L8S 4M1 , Canada
| | - Giuseppe Melacini
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8S 4M1 , Canada . .,Department of Chemistry and Chemical Biology , McMaster University , Hamilton , ON L8S 4M1 , Canada
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29
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Wang C, Niu Y, Meng Q, Zhang L. Ethyl pyruvate (EP) suppressed post-harvest blue mold of sweet cherry fruit by inhibiting the growth of Penicillium oxalicum. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:3517-3524. [PMID: 30623442 DOI: 10.1002/jsfa.9571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 11/15/2018] [Accepted: 01/04/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The shelf-life of fresh sweet cherry is relatively short due to fungal decay during post-harvest storage. To investigate the effect and the mechanism of action of ethyl pyruvate (EP) against blue mold of sweet cherry fruit caused by Penicillium oxalicum, the spores were treated with 25 mg L-1 EP. The spore germination rate of P. oxalicum, the integrities of the cell wall and plasma membrane, reactive oxygen species (ROS) and malondialdehyde (MDA) were evaluated. RESULTS EP treatment significantly suppressed post-harvest blue mold of sweet cherry fruit. We found that the treatment of 25 mg L-1 EP significantly suppressed blue mold of post-harvest sweet cherry fruit by directly inhibiting germination and the mycelial growth of P. oxalicum. After co-inoculation with EP for 30 min, the spore germination rate of P. oxalicum was reduced by 83.5%. In addition, the pH of the EP solution was found to affect its antimicrobial activity. After treatment with EP, the cell surface structures of the spores of P. oxalicum were much more incomplete, and higher ROS and MDA values were recorded in the spores. CONCLUSIONS The results suggested that EP treatment destroyed the integrities of the cell surface structures and caused oxidative damage of the spores of P. oxalicum. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Chu Wang
- School of Life Science, Shanxi University, Taiyuan, China
| | - Yu Niu
- Institute of Agricultural Resources and Economy, Shanxi Academy of Agricultural Sciences, Taiyuan, China
| | - Qiuxia Meng
- Institute of Agricultural Environment and Resources, Shanxi Academy of Agricultural Sciences, Taiyuan, China
| | - Lizhen Zhang
- School of Life Science, Shanxi University, Taiyuan, China
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30
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Whole-Cell Multiparameter Assay for Ricin and Abrin Activity-Based Digital Holographic Microscopy. Toxins (Basel) 2019; 11:toxins11030174. [PMID: 30909438 PMCID: PMC6468687 DOI: 10.3390/toxins11030174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 01/25/2023] Open
Abstract
Ricin and abrin are ribosome-inactivating proteins leading to inhibition of protein synthesis and cell death. These toxins are considered some of the most potent and lethal toxins against which there is no available antidote. Digital holographic microscopy (DHM) is a time-lapse, label-free, and noninvasive imaging technique that can provide phase information on morphological features of cells. In this study, we employed DHM to evaluate the morphological changes of cell lines during ricin and abrin intoxication. We showed that the effect of these toxins is characterized by a decrease in cell confluence and changes in morphological parameters such as cell area, perimeter, irregularity, and roughness. In addition, changes in optical parameters such as phase-shift, optical thickness, and effective-calculated volume were observed. These effects were completely inhibited by specific neutralizing antibodies. An enhanced intoxication effect was observed for preadherent compared to adherent cells, as was detected in early morphology changes and confirmed by annexin V/propidium iodide (PI) apoptosis assay. Detection of the dynamic changes in cell morphology at initial stages of cell intoxication by DHM emphasizes the highly sensitive and rapid nature of this method, allowing the early detection of active toxins.
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31
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Kazaana A, Sano E, Yoshimura S, Makita K, Hara H, Yoshino A, Ueda T. Promotion of TRAIL/Apo2L-induced apoptosis by low-dose interferon-β in human malignant melanoma cells. J Cell Physiol 2019; 234:13510-13524. [PMID: 30613977 DOI: 10.1002/jcp.28029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/30/2018] [Indexed: 12/29/2022]
Abstract
Interferon β (IFN-β) is considered a signaling molecule with important therapeutic potential in cancer since IFN-β-induced gene transcription mediates antiproliferation and cell death induction. Whereas, TNF-related apoptosis inducing ligand/Apo2 ligand (TRAIL/Apo2L) has emerged as a promising anticancer agent because it induces apoptosis specifically in cancer cells. In this study, we elucidated that IFN-β augments TRAIL-induced apoptosis synergistically using five human malignant melanoma cells. All of these cells were induced apoptosis by TRAIL. Whereas, the response against IFN-β was different in amelanotic cells (A375 and CRL1579) and melanotic cells (G361, SK-MEL-28, and MeWo). The responsibility of amelanotic cells against IFN-β was higher than those of melanotic cells. The synergism of IFN-β and TRAIL were correlated with the responsibilities of the cells against IFN-β. The synergistic interaction was confirmed by a combination index based on the Chou-Talalay method. The upregulation of apoptosis in amelanotic cells was caused by very low doses of IFN-β (over 0.1 IU/ml). Both of p53-mediated intrinsic pathway and Fas-related extrinsic pathway were activated by IFN-β alone and combination with TRAIL. Further, TRAIL death receptors (DR4 and DR5) were upregulated by a low-dose IFN-β (over 0.1 IU/ml) and the expression was more promoted by the combination with TRAIL. It was clarified that the upregulation of DR5 is associated with the declination of viability.
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Affiliation(s)
- Akira Kazaana
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa-shi, Japan
| | - Emiko Sano
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa-shi, Japan
| | - Sodai Yoshimura
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Kotaro Makita
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Hiroyuki Hara
- Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Atsuo Yoshino
- Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa-shi, Japan
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32
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Characterization of sulfated polysaccharide from Laurencia obtusa and its apoptotic, gastroprotective and antioxidant activities. Int J Biol Macromol 2018; 126:326-336. [PMID: 30543883 DOI: 10.1016/j.ijbiomac.2018.12.089] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 12/08/2018] [Accepted: 12/09/2018] [Indexed: 12/12/2022]
Abstract
This study was designed to characterize the physico-chemical properties of the sulfated polysaccharide (SP) isolated from the red alga Laurencia obtusa and to evaluate its apoptotic, gastroprotective and antioxidant activities. The different macromolecular characteristics of SP were determined by size exclusion chromatography combined with multi-angle laser light-scattering detection (SEC-MALLS), Fourier transform infrared spectroscopy (FTIR) analysis and nuclear magnetic resonance spectroscopy (1H NMR and 13C NMR). The native molecular weight of the extracted polysaccharide is high (≥336,900 g·mol-1). It showed high amounts of sulfated groups (28.2%) and low levels of proteins. It was found to be a potent inducer of apoptosis on acute monocytic leukaemia THP-1cell lines with EC50 value of 53 μg·mL-1. Furthermore, a significant gastroprotective effect (p < 0.01) was also observed with a gastric ulcer inhibition of 63.44%, 78.42% and 82.15% at the doses 25, 50 and 100 mg·kg-1, respectively. In addition, SP significantly increased glutathione levels (GSH) and decreased the concentration of thiobarbituric acid-reactive substances (TBARS) in EtOH/HCl-damaged gastric mucosa in rats; it also exhibited an important antioxidant activity in vitro. Therefore, SP, derived from the red alga Laurencia obtusa, may have a potential therapeutic effect against acute myeloid leukaemia and a beneficial potential as gastroprotective and antioxidant natural product.
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Shahryari S, Zahiri HS, Haghbeen K, Adrian L, Noghabi KA. High phenol degradation capacity of a newly characterized Acinetobacter sp. SA01: Bacterial cell viability and membrane impairment in respect to the phenol toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 164:455-466. [PMID: 30144706 DOI: 10.1016/j.ecoenv.2018.08.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/14/2018] [Accepted: 08/16/2018] [Indexed: 06/08/2023]
Abstract
An efficient phenol-degrading bacterial strain, belonging to Acinetobacter genus, was isolated and selected to study the impact of different environmentally relevant phenol concentrations on the degradation process. The bacterial isolate, labeled as Acinetobacter sp. SA01 was able to degrade the maximum phenol concentration of 1 g/l during 60 h at optimum condition of pH 7, 30 °C and 180 rpm. Aeration and initial cell density, the two important factors, were carefully examined in the optimal growth conditions. The results showed that these two variables related proportionally with phenol degradation rate. Further investigations showed no effect of inoculum size on the enhancement of degradation of phenol at over 1 g/l. Flow cytometry (FCM) study was performed to find out the relationship between phenol-induced damages and phenol degradation process. Single staining using propidium iodide (PI) showed increased cell membrane permeability with an increase of phenol concentration, while single staining with carboxyfluorescein diacetate (cFDA) demonstrated a considerable reduction in esterase activity of the cells treated with phenol at more than 1 g/l. A detailed investigation of cellular viability using concurrent double staining of cFDA/PI revealed that the cell death increases in cells exposed to phenol at more than 1 g/l. The rate of cell death was low but noticeable in the presence of phenol concentration of 2 g/l, over time. Phenol at concentrations of 3 and 4 g/l caused strong toxicity in living cells of Acinetobacter sp. SA01. The plate count method and microscopy analysis of the cells treated with phenol at 1.5 and 2 g/l confirmed an apparent reduction in cell number over time. It was assumed that the phenol concentrations higher than 1 g/l have destructive effects on membrane integrity of Acinetobacter sp. SA01. Our results also revealed that the toxicity did not reduce by increasing initial cell density. Scanning electron microscopy (SEM) examination of bacterial cells revealed the surface morphological changes following exposure to phenol. The bacterial cells, with wizened appearance and wrinkled surface, were observed by exposing to phenol (1 g/l) at lag phase. A morphological change occurred in the mid-logarithmic phase as the bacterial cells demonstrated coccobacilli form as well as elongated filamentous shape. The wrinkled cell surface were totally disappeared in mid-stationary phase, suggesting that the complete degradation of phenol relieve the stress and direct bacterial cells toward possessing smoother cell membrane.
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Affiliation(s)
- Shahab Shahryari
- Division of Industrial & Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P. O. Box 14155-6343, Tehran, Iran
| | - Hossein Shahbani Zahiri
- Division of Industrial & Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P. O. Box 14155-6343, Tehran, Iran
| | - Kamahldin Haghbeen
- Division of Industrial & Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P. O. Box 14155-6343, Tehran, Iran
| | - Lorenz Adrian
- Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Kambiz Akbari Noghabi
- Division of Industrial & Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), P. O. Box 14155-6343, Tehran, Iran.
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Kozuch S, Cultrara CN, Beck AE, Heller CJ, Shah S, Patel MR, Zilberberg J, Sabatino D. Enhanced Cancer Theranostics with Self-Assembled, Multilabeled siRNAs. ACS OMEGA 2018; 3:12975-12984. [PMID: 30411024 PMCID: PMC6217585 DOI: 10.1021/acsomega.8b01999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 09/26/2018] [Indexed: 05/12/2023]
Abstract
The integration of therapy and diagnostics, termed "theranostics", has recently gained widespread utility in the development of new and improved therapeutics that effectively diagnose and treat diseases, such as cancer. In this study, the covalent attachment of multiple fluorescent labels (i.e., fluorescein isothiocyanate (FITC)) to a wide range of siRNAs, including those adopting linear, V- and Y-shape nanostructures, was successfully accomplished by solid-phase bioconjugation for monitoring cell uptake, co-localization, and biological activity in cell culture. The FITC-labeled higher-order V- and Y-shape siRNAs maintained the requisite hybrid stabilities and A-type helical structures for invoking RNAi activity. The FITC-siRNA hybrids with sense-strand modifiers enabled efficient mRNA knockdown (∼50-90%), which also translated to increased cell death (∼20-95%) in a bone metastatic prostate cancer cell line, over a 72 h incubation period. Significantly, the Y-shaped siRNA containing three FITC probes enhanced fluorescent signaling relative to the siRNA constructs containing single and double fluorophores while retaining potent knockdown and cell death effects post-transfection. Taken together, this data highlights the theranostic utility of the multilabeled FITC-siRNA constructs for potential cancer gene therapy applications.
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Affiliation(s)
- Stephen
D. Kozuch
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
| | - Christopher N. Cultrara
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
| | - Adah E. Beck
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
| | - Claudia J. Heller
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
| | - Sunil Shah
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
| | - Mayurbhai R. Patel
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
- Nitto
Denko Avecia Inc, 8560
Reading Road, Cincinnati, Ohio 45215, United
States
| | - Jenny Zilberberg
- Department
of Biomedical Research, Hackensack University
Medical Center, Hackensack, New Jersey 07601, United States
| | - David Sabatino
- Department
of Chemistry and Biochemistry, Seton Hall
University, South
Orange, New Jersey 07079, United States
- E-mail: . Tel: +1-973-313-6359
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Lin J, Wu G, Chen J, Fu C, Hong X, Li L, Liu X, Wu M. Electroacupuncture inhibits sodium nitroprusside‑mediated chondrocyte apoptosis through the mitochondrial pathway. Mol Med Rep 2018; 18:4922-4930. [PMID: 30272266 PMCID: PMC6236293 DOI: 10.3892/mmr.2018.9498] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 08/22/2018] [Indexed: 12/17/2022] Open
Abstract
In China, electroacupuncture (EA) is a therapeutic method that is extensively applied in the clinical treatment of osteoarthritis (OA); however, the underlying molecular mechanism remains unclear. Chondrocyte apoptosis may be observed in cartilage tissue in OA, and is often considered a key target for the treatment of this condition. Therefore, the present study aimed to determine the effects of EA on sodium nitroprusside (SNP)-induced chondrocyte apoptosis. Chondrocytes were obtained from the knee joints of Sprague Dawley rats by type II collagenase digestion. Following microscopic observation and authentication with type II collagen immunohistochemistry, articular cartilage cells were used in subsequent experiments. Using inverted phase contrast microscopy, DAPI staining and flow cytometry, it was revealed that chondrocytes treated with SNP became apoptotic, whereas EA inhibited SNP-induced chondrocyte apoptosis. Subsequently, JC-1 single staining, reverse transcription-quantitative polymerase chain reaction analysis, western blotting, colorimetric assays and immunofluorescence staining were performed for further investigation. The results demonstrated that, when compared with normal chondrocytes, the mitochondrial membrane potential of SNP-treated chondrocytes was markedly lowered, B-cell lymphoma 2 (Bcl-2) expression was reduced, and the expression levels of Bcl-2-associated X protein (Bax), cytochrome c, caspase-9 and caspase-3 were increased. Compared with in SNP-treated chondrocytes, the decrease in the mitochondrial membrane potential of chondrocytes treated with SNP and EA was smaller, Bcl-2 expression was increased, and the expression levels of Bax, cytochrome c, caspase-9 and caspase-3 were decreased following EA intervention. In conclusion, the present study demonstrated that EA modulated the mitochondrial pathway to suppress SNP-mediated chondrocyte apoptosis. Therefore, EA may be of value in the treatment of OA.
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Affiliation(s)
- Jie Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Guangwen Wu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Jun Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Changlong Fu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xiue Hong
- Department of Acupuncture and Moxibusion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
| | - Li Li
- Department of Acupuncture and Moxibusion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
| | - Xianxiang Liu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Mingxia Wu
- Department of Acupuncture and Moxibusion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
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Azuma Y, Imai H, Kawaguchi Y, Nakase I, Kimura H, Futaki S. Modular Redesign of a Cationic Lytic Peptide To Promote the Endosomal Escape of Biomacromolecules. Angew Chem Int Ed Engl 2018; 57:12771-12774. [DOI: 10.1002/anie.201807534] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Yusuke Azuma
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Haruka Imai
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | | | - Ikuhiko Nakase
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Hiroshi Kimura
- Institute of Innovative Research; Tokyo Institute of Technology; 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8503 Japan
| | - Shiroh Futaki
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
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Azuma Y, Imai H, Kawaguchi Y, Nakase I, Kimura H, Futaki S. Modular Redesign of a Cationic Lytic Peptide To Promote the Endosomal Escape of Biomacromolecules. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yusuke Azuma
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Haruka Imai
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | | | - Ikuhiko Nakase
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Hiroshi Kimura
- Institute of Innovative Research; Tokyo Institute of Technology; 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8503 Japan
| | - Shiroh Futaki
- Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
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38
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Cao H, Qi Y, Yang Y, Wang L, Sun J, Li Y, Xia J, Wang H, Li J. Assembled Nanocomplex for Improving Photodynamic Therapy through Intraparticle Fluorescence Resonance Energy Transfer. Chem Asian J 2018; 13:3540-3546. [DOI: 10.1002/asia.201800859] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/12/2018] [Indexed: 01/06/2023]
Affiliation(s)
- Hongqian Cao
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
- School of Public Health; Jilin University; Changchun 130021 P.R. China
| | - Yanfei Qi
- School of Public Health; Jilin University; Changchun 130021 P.R. China
| | - Yang Yang
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
| | - Lei Wang
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
| | - Jiaheng Sun
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
- School of Public Health; Jilin University; Changchun 130021 P.R. China
| | - Yue Li
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
| | - Jiarui Xia
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects, of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 P.R. China
| | - Junbai Li
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
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Development of Human Mast Cells from Hematopoietic Stem Cells within a 3D Collagen Matrix: Effect of Stem Cell Media on Mast Cell Generation. Stem Cells Int 2018; 2018:2136193. [PMID: 30123284 PMCID: PMC6079339 DOI: 10.1155/2018/2136193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/20/2018] [Accepted: 05/27/2018] [Indexed: 12/24/2022] Open
Abstract
Mast cells (MCs) arise from hematopoietic stem cells (HSCs) that mature within vascularized tissues. Fibroblasts and endothelial cells (ECs) play a role in the maturation of HSCs in the tissues. Due to difficulties in isolating MCs from tissues, large numbers of committed MC precursors can be generated in 2D culture systems with the use of differentiation factors. Since MCs are tissue-resident cells, the development of a 3D tissue-engineered model with ancillary cells that more closely mimics the 3D in vivo microenvironment has greater relevance for MC studies. The goals of this study were to show that MCs can be derived from HSCs within a 3D matrix and to determine a media to support MCs, fibroblasts, and ECs. The results show that HSCs within a collagen matrix cultured in StemSpan media with serum added at the last week yielded a greater number of c-kit+ cells and a greater amount of histamine granules compared to other media tested. Media supplemented with serum were necessary for EC survival, while fibroblasts survived irrespective of serum with higher cell yields in StemSpan. This work demonstrates the development of functional MCs within a 3D collagen matrix using a stem cell media that supports fibroblast and ECs.
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Dang Y, Waxman S, Wang C, Loewen RT, Sun M, Loewen NA. A porcine ex vivo model of pigmentary glaucoma. Sci Rep 2018; 8:5468. [PMID: 29615741 PMCID: PMC5882895 DOI: 10.1038/s41598-018-23861-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 03/16/2018] [Indexed: 11/11/2022] Open
Abstract
Pigment dispersion can lead to pigmentary glaucoma, a poorly understood condition of younger myopic eyes with fluctuating high intraocular pressure. It has been difficult to investigate its pathogenesis without a model similar to human eyes in size and behavior. Here we present a porcine ex vivo model that recreates several features of pigmentary glaucoma, including intraocular hypertension, accumulation of pigment in the trabecular meshwork, and declining phagocytosis. We found that trabecular meshwork cells regulate outflow, form actin stress fibers, and have a decreased phagocytic activity. Gene expression microarrays and a pathway analysis of TM monolayers as well as ex vivo anterior segment perfusion cultures indicated that RhoA plays a central role in regulating the cytoskeleton, motility, and phagocytosis in the trabecular meshwork, providing new insights and targets to investigate in pigmentary glaucoma.
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Affiliation(s)
- Yalong Dang
- Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America
| | - Susannah Waxman
- Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America
| | - Chao Wang
- Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Ralitsa T Loewen
- Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America
| | - Ming Sun
- Department of Cell Biology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America
| | - Nils A Loewen
- Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America.
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Yoon YJ, Suh MJ, Lee HY, Lee HJ, Choi EH, Moon IS, Song K. Anti-tumor effects of cold atmospheric pressure plasma on vestibular schwannoma demonstrate its feasibility as an intra-operative adjuvant treatment. Free Radic Biol Med 2018; 115:43-56. [PMID: 29138018 DOI: 10.1016/j.freeradbiomed.2017.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/07/2017] [Accepted: 11/10/2017] [Indexed: 12/12/2022]
Abstract
Vestibular schwannoma (VS), although a benign intracranial tumor, causes morbidities by brainstem compression. Since chemotherapy is not very effective in most Nf2-negative schwannomas, surgical removal or radiation therapy is required. However, depending on the size and site of the tumor, these approaches may cause loss of auditory or vestibular functions, and severely decrease the post-surgical wellbeing. Here, we examined the feasibility of cold atmospheric pressure plasma (CAP) as an intra-operative adjuvant treatment for VS after surgery. Cell death was efficiently induced in both human HEI-193 and mouse SC4 VS cell lines upon exposure to CAP for seven minutes. Interestingly, both apoptosis and necroptosis were simultaneously induced by CAP treatment, and cell death was not completely inhibited by pan-caspase and receptor-interacting serine/threonine-protein kinase 1 (RIK1) inhibitors. Upon CAP exposure, cell death phenotype was similarly observed in patient-derived primary VS cells and tumor mass. In addition, CAP exposure after the surgical removal of primary tumor efficiently inhibited tumor recurrence in SC4-grafted mouse models. Collectively, these results strongly suggest that CAP should be developed as an efficient adjuvant treatment for VS after surgery to eliminate the possible remnant tumor cells, and to minimize the surgical area in the brain for post-surgical wellbeing.
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Affiliation(s)
- Yeo Jun Yoon
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul 03722, Korea
| | - Michelle J Suh
- Department of Otorhinolaryngology, College of Medicine, Yonsei University, Seoul 03722, Korea
| | - Hyun Young Lee
- Department of Electrical Engineering, Pusan National University, Pusan 46269, Korea
| | - Hae June Lee
- Department of Electrical Engineering, Pusan National University, Pusan 46269, Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center and Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - In Seok Moon
- Department of Otorhinolaryngology, College of Medicine, Yonsei University, Seoul 03722, Korea.
| | - Kiwon Song
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul 03722, Korea.
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Abstract
Beyond the more common chemical delivery strategies, several physical techniques are used to open the lipid bilayers of cellular membranes. These include using electric and magnetic fields, temperature, ultrasound or light to introduce compounds into cells, to release molecular species from cells or to selectively induce programmed cell death (apoptosis) or uncontrolled cell death (necrosis). More recently, molecular motors and switches that can change their conformation in a controlled manner in response to external stimuli have been used to produce mechanical actions on tissue for biomedical applications. Here we show that molecular machines can drill through cellular bilayers using their molecular-scale actuation, specifically nanomechanical action. Upon physical adsorption of the molecular motors onto lipid bilayers and subsequent activation of the motors using ultraviolet light, holes are drilled in the cell membranes. We designed molecular motors and complementary experimental protocols that use nanomechanical action to induce the diffusion of chemical species out of synthetic vesicles, to enhance the diffusion of traceable molecular machines into and within live cells, to induce necrosis and to introduce chemical species into live cells. We also show that, by using molecular machines that bear short peptide addends, nanomechanical action can selectively target specific cell-surface recognition sites. Beyond the in vitro applications demonstrated here, we expect that molecular machines could also be used in vivo, especially as their design progresses to allow two-photon, near-infrared and radio-frequency activation.
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Tangchirakhaphan S, Innajak S, Nilwarangkoon S, Tanjapatkul N, Mahabusrakum W, Watanapokasin R. Mechanism of apoptosis induction associated with ERK1/2 upregulation via goniothalamin in melanoma cells. Exp Ther Med 2018; 15:3052-3058. [PMID: 29456710 DOI: 10.3892/etm.2018.5762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 01/11/2018] [Indexed: 01/28/2023] Open
Abstract
The present study aimed to investigate the effect of goniothalamin on apoptosis induction in the A375 melanoma cell line. Melanoma is a type of skin cancer with increased prevalence and no potential standard treatment. Goniothalamin is a plant, bioactive styrly-lactone, which has various bioactivities including anti-microbial, anti-inflammatory and anti-cancer. Apoptosis induction by goniothalamin has been studied in numerous cancer cell lines, however not in the melanoma cell line A375. The results of the MTT assay demonstrated that goniothalamin induced anti-proliferation in a dose dependent manner. Hoechst staining assay demonstrated that goniothalamin induced chromatin condensation and apoptotic bodies in A375 treated cells, and JC-1 staining revealed that goniothalamin induced mitochondrial membrane dysfunction in A375 cells. In addition, goniothalamin decreased the level of anti-apoptotic proteins myeloid cell leukemia 1, B cell lymphoma (Bcl)-2 and Bcl-extra large, whereas it increased the level of pro-apoptotic proteins, Bcl-2 Associated X, apoptosis regulator, t-BID and Bim in A375 treated cells. In addition, goniothalamin also increased active caspase-9, -7 and cleaved-poly (ADP-ribose) polymerase expression in A375 treated cells. Furthermore, phosphorylated (p)-pyruvate dehydrogenase kinase (PDK) 1 (Ser241) and p-RAC-alpha serine/threonine-protein kinase (Akt; Ser473) were decreased, however c-Jun and p-extracellular signal-regulated kinase (ERK)1/2 were increased upon goniothalamin treatment. These results suggest that goniothalamin has an effect, as anti-proliferation and apoptosis induction in A375 cells were associated with upregulated p-ERK1/2, c-Jun and downregulated p-PDK1 (Ser241), p-Akt (Ser473) in A375 cells. Therefore, goniothalamin may be a potential candidate for anti-cancer drug development for melanoma treatment.
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Affiliation(s)
| | - Sukanda Innajak
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand
| | - Sirinun Nilwarangkoon
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand
| | - Nudjaree Tanjapatkul
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand
| | - Wilawan Mahabusrakum
- Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Ramida Watanapokasin
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand
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Sun J, Xin Q, Yang Y, Shah H, Cao H, Qi Y, Gong JR, Li J. Nitrogen-doped graphene quantum dots coupled with photosensitizers for one-/two-photon activated photodynamic therapy based on a FRET mechanism. Chem Commun (Camb) 2018; 54:715-718. [DOI: 10.1039/c7cc08820e] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Photosensitizers can be excited by nitrogen-doped graphene quantum dots under one-/two-photon excitation through an intramolecular FRET mechanism and induced phototoxicity.
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Affiliation(s)
- Jiaheng Sun
- School of Public Health, Jilin University
- Changchun
- China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
| | - Qi Xin
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Yang Yang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Hameed Shah
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Hongqian Cao
- School of Public Health, Jilin University
- Changchun
- China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
| | - Yanfei Qi
- School of Public Health, Jilin University
- Changchun
- China
| | - Jian Ru Gong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Junbai Li
- CAS Key Laboratory of Colloid
- Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
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Joh Y, Choi WS. Mitochondrial Complex I Inhibition Accelerates Amyloid Toxicity. Dev Reprod 2017; 21:417-424. [PMID: 29354787 PMCID: PMC5769135 DOI: 10.12717/dr.2017.21.4.417] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 12/21/2017] [Accepted: 12/26/2017] [Indexed: 02/02/2023]
Abstract
Alzheimer's disease (AD) is neurodegenerative disease, characterized by the
progressive decline of memory, cognitive functions, and changes in personality.
The major pathological features in postmortem brains are neurofibrillary tangles
and amyloid beta (Aβ) deposits. The majority of AD cases are sporadic and
age-related. Although AD pathogenesis has not been established, aging and
declining mitochondrial function has been associated. Mitochondrial dysfunction
has been observed in AD patients' brains and AD mice models, and the mice with a
genetic defect in mitochondrial complex I showed enhanced Aβ level in
vivo. To elucidate the role of mitochondrial complex I in AD, we
used SH-SY5Y cells transfected with DNA constructs expressing human amyloid
precursor protein (APP) or human Swedish APP mutant (APP-swe). The expression of
APP-swe increased the level of Aβ protein in comparison with control. When
complex I was inhibited by rotenone, the increase of ROS level was remarkably
higher in the cells overexpressing APP-swe compared to control. The number of
dead cell was significantly increased in APP-swe-expressing cells by complex I
inhibition. We suggest that complex I dysfunction accelerate amyloid toxicity
and mitochondrial complex I dysfunction in aging may contribute to the
pathogenesis of sporadic AD.
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Affiliation(s)
- Yechan Joh
- School of Biological Sciences and Technology, College of Natural Sciences, College of Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Won-Seok Choi
- School of Biological Sciences and Technology, College of Natural Sciences, College of Medicine, Chonnam National University, Gwangju 61186, Korea
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Rahman S, Rahman T. Unveiling some FDA-approved drugs as inhibitors of the store-operated Ca 2+ entry pathway. Sci Rep 2017; 7:12881. [PMID: 29038464 PMCID: PMC5643495 DOI: 10.1038/s41598-017-13343-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/21/2017] [Indexed: 11/16/2022] Open
Abstract
The store-operated calcium entry (SOCE) pathway is an important route for generating cytosolic Ca2+ signals that regulate a diverse array of biological processes. Abnormal SOCE seem to underlie several diseases that notably include allergy, inflammation and cancer. Therefore, any modulator of this pathway is likely to have significant impact in cell biology under both normal and abnormal conditions. In this study, we screened the FDA-approved drug library for agents that share significant similarity in 3D shape and surface electrostatics with few, hitherto best known inhibitors of SOCE. This has led to the identification of five drugs that showed dose-dependent inhibition of SOCE in cell-based assay, probably through interacting with the Orai1 protein which effectively mediates SOCE. Of these drugs, leflunomide and teriflunomide could suppress SOCE significantly at clinically-relevant doses and this provides for an additional mechanism towards the therapeutic utility of these drugs as immunosuppressants. The other three drugs namely lansoprazole, tolvaptan and roflumilast, were less potent in suppressing SOCE but were more selective and thus they may serve as novel scaffolds for future development of new, more efficacious SOCE inhibitors.
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Affiliation(s)
- Saifur Rahman
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, UK
| | - Taufiq Rahman
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, UK.
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47
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Sassen WA, Lehne F, Russo G, Wargenau S, Dübel S, Köster RW. Embryonic zebrafish primary cell culture for transfection and live cellular and subcellular imaging. Dev Biol 2017; 430:18-31. [DOI: 10.1016/j.ydbio.2017.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/24/2017] [Accepted: 07/24/2017] [Indexed: 10/19/2022]
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48
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Sun B, Wang L, Li Q, He P, Liu H, Wang H, Yang Y, Li J. Bis(pyrene)-Doped Cationic Dipeptide Nanoparticles for Two-Photon-Activated Photodynamic Therapy. Biomacromolecules 2017; 18:3506-3513. [DOI: 10.1021/acs.biomac.7b00780] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bingbing Sun
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Lei Wang
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Qi Li
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Pingping He
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Huiling Liu
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Hao Wang
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Yang Yang
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Junbai Li
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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49
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Rybachuk O, Kopach O, Krotov V, Voitenko N, Pivneva T. Optimized Model of Cerebral Ischemia In situ for the Long-Lasting Assessment of Hippocampal Cell Death. Front Neurosci 2017; 11:388. [PMID: 28729821 PMCID: PMC5498507 DOI: 10.3389/fnins.2017.00388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/20/2017] [Indexed: 12/29/2022] Open
Abstract
Among all the brain, the hippocampus is the most susceptible region to ischemic lesion, with the highest vulnerability of CA1 pyramidal neurons to ischemic damage. This damage may cause either prompt neuronal death (within hours) or with a delayed appearance (over days), providing a window for applying potential therapies to reduce or prevent ischemic impairments. However, the time course when ischemic damage turns to neuronal death strictly depends on experimental modeling of cerebral ischemia and, up to now, studies were predominantly focused on a short time-window—from hours to up to a few days post-lesion. Using different schemes of oxygen-glucose deprivation (OGD), the conditions taking place upon cerebral ischemia, we optimized a model of mimicking ischemic conditions in organotypical hippocampal slices for the long-lasting assessment of CA1 neuronal death (at least 3 weeks). By combining morphology and electrophysiology, we show that prolonged (30-min duration) OGD results in a massive neuronal death and overwhelmed astrogliosis within a week post-OGD whereas OGD of a shorter duration (10-min) triggered programmed CA1 neuronal death with a significant delay—within 2 weeks—accompanied with drastically impaired CA1 neuron functions. Our results provide a rationale toward optimized modeling of cerebral ischemia for reliable examination of potential treatments for brain neuroprotection, neuro-regeneration, or testing neuroprotective compounds in situ.
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Affiliation(s)
- Oksana Rybachuk
- Department of Sensory Signaling, Bogomoletz Institute of PhysiologyKyiv, Ukraine
| | - Olga Kopach
- Department of Sensory Signaling, Bogomoletz Institute of PhysiologyKyiv, Ukraine
| | - Volodymyr Krotov
- Department of Sensory Signaling, Bogomoletz Institute of PhysiologyKyiv, Ukraine
| | - Nana Voitenko
- Department of Sensory Signaling, Bogomoletz Institute of PhysiologyKyiv, Ukraine
| | - Tatyana Pivneva
- Department of Sensory Signaling, Bogomoletz Institute of PhysiologyKyiv, Ukraine
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50
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Calabuig A, Mugnano M, Miccio L, Grilli S, Ferraro P. Investigating fibroblast cells under "safe" and "injurious" blue-light exposure by holographic microscopy. JOURNAL OF BIOPHOTONICS 2017; 10:919-927. [PMID: 27088256 DOI: 10.1002/jbio.201500340] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/26/2016] [Accepted: 03/18/2016] [Indexed: 05/26/2023]
Abstract
The exposure to visible light has been shown to exert various biological effects, such as erythema and retinal degeneration. However, the phototoxicity mechanisms in living cells are still not well understood. Here we report a study on the temporal evolution of cell morphology and volume during blue light exposure. Blue laser irradiation is switched during the operation of a digital holography (DH) microscope between what we call here "safe" and "injurious" exposure (SE & IE). The results reveal a behaviour that is typical of necrotic cells, with early swelling and successive leakage of the intracellular liquids when the laser is set in the "injurious" operation. In the phototoxicity investigation reported here the light dose modulation is performed through the very same laser light source adopted for monitoring the cell's behaviour by digital holographic microscope. We believe the approach may open the route to a deep investigation of light-cell interactions, with information about death pathways and threshold conditions between healthy and damaged cells when subjected to light-exposure. 3D Morphology and quantitative phase information from late stage of necrosis cell death.
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Affiliation(s)
- Alejandro Calabuig
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) 'E. Caianiello', Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, P. le Tecchio 80, 80125, Napoli, Italy
| | - Martina Mugnano
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) 'E. Caianiello', Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, P. le Tecchio 80, 80125, Napoli, Italy
| | - Lisa Miccio
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) 'E. Caianiello', Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
| | - Simonetta Grilli
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) 'E. Caianiello', Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
| | - Pietro Ferraro
- National Council of Research, Institute of Applied Science & Intelligent Systems (ISASI) 'E. Caianiello', Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
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