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Zani AP, Zani CP, Din ZU, Rodrigues-Filho E, Ueda-Nakamura T, Garcia FP, de Oliveira Silva S, Nakamura CV. Dibenzylideneacetone Induces Apoptosis in Cervical Cancer Cells through Ros-Mediated Mitochondrial Damage. Antioxidants (Basel) 2023; 12:antiox12020317. [PMID: 36829876 PMCID: PMC9952489 DOI: 10.3390/antiox12020317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/16/2023] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
Cervical cancer is a health problem among women worldwide. Considering the limitations of prevention and antineoplastic chemotherapy against cervical cancer, research is needed to discover new, more effective, and safe antitumor agents. In the present study, we investigated the in vitro cytotoxicity of a new synthetic dibenzylideneacetone derived from 1,5-diaryl-3-oxo-1,4-pentadienyl (A3K2A3) against cervical cancer cells immortalized by HPV 16 (SiHa), and 18 (HeLa) by MTT assay. Furthermore, we performed spectrofluorimetry, flow cytometry, and Western blot analyzes to explore the inhibitory mechanism of A3K2A3 in cervical cancer cells. A3K2A3 showed cytotoxic activity against both cell lines. Mitochondrial depolarization and reduction in intracellular ATP levels were observed, which may be dependent on the redox imbalance between increased ROS and reduced levels of the antioxidant defense. In addition, damage to the cell membrane and DNA, and effective blocking of cell division in the G2/M phase were detected, which possibly led to the induction of apoptosis. This result was further confirmed by the upregulation of apoptosis-related proteins Bax, cytochrome C, and caspases 9 and 3. Our results provided the first evidence that A3K2A3 contributes to the suppression of cervical cancer in vitro, showing promise as a possible alternative for the treatment of this cancer.
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Affiliation(s)
- Aline Pinto Zani
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
| | - Caroline Pinto Zani
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
| | - Zia Ud Din
- LaBioMMi, Department of Chemistry, Federal University of São Carlos, CP 676, São Carlos CEP 13565-905, SP, Brazil
| | - Edson Rodrigues-Filho
- LaBioMMi, Department of Chemistry, Federal University of São Carlos, CP 676, São Carlos CEP 13565-905, SP, Brazil
| | - Tânia Ueda-Nakamura
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
| | - Francielle Pelegrin Garcia
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
| | - Sueli de Oliveira Silva
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
| | - Celso Vataru Nakamura
- Laboratory of Technological Innovation in the Development of Pharmaceuticals and Cosmetics, State University of Maringá, Maringá CEP 87020-900, PR, Brazil
- Correspondence: ; Tel.: +55-(044)-3011-5012; Fax: +55-(044)-3011-5046
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Doxorubicin-Loaded Iron Oxide Nanoparticles Induce Oxidative Stress and Cell Cycle Arrest in Breast Cancer Cells. Antioxidants (Basel) 2023; 12:antiox12020237. [PMID: 36829796 PMCID: PMC9952039 DOI: 10.3390/antiox12020237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
Cancer is one of the most common diseases nowadays and derives from the uncontrollable growth of a single cell. Magnetic nanoparticles (NpMag) offer various possibilities for use in the biomedical area, including drug delivery mediated by magnetic fields. In the current study, we evaluated the in vitro effects of iron-oxide magnetic nanoparticles conjugated with the antitumor drug doxorubicin (Dox) on human breast cancer cells. Our results revealed that magnetic nanoparticles with Dox (NpMag+Dox) induce cellular redox imbalance in MCF-7 cells. We also demonstrate that iron-oxide nanoparticles functionalized with Dox induce oxidative stress evidenced by DNA damage, lipid peroxidation, cell membrane disruption, and loss of mitochondria potential. As a result, NpMag+Dox drives MCF-7 cells to stop the cell cycle and decrease cell migration. The association of NpMg+Dox induced a better delivery of Dox to MCF cells, mainly in the presence of a magnetic field, increasing the death of MCF cells which might reduce the toxicity for healthy cells providing a better efficacy for the treatment. Thus, iron-oxide nanoparticles and doxorubicin conjugated may be candidate for anticancer therapy.
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A Natural Botanical Product, Resveratrol, Effectively Suppresses Vesicular Stomatitis Virus Infection In Vitro. PLANTS 2021; 10:plants10061231. [PMID: 34204270 PMCID: PMC8234721 DOI: 10.3390/plants10061231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/12/2021] [Accepted: 06/15/2021] [Indexed: 12/18/2022]
Abstract
Numerous natural phytochemicals such as resveratrol are acknowledged as potent botanical agents in regulating immune responses. However, it is less understood whether such immunomodulatory phytochemicals are appropriate for use as direct treatments in veterinary viral diseases. In the present study, we investigated the efficacy of resveratrol in suppressing vesicular stomatitis virus (VSV) infection. Outbreaks of VSV can cause massive economic loss in poultry and livestock husbandry farming, and VSV treatment is in need of therapeutic development. We utilized a recombinant VSV that expresses green fluorescent protein (GFP) to measure viral replication in cells treated with resveratrol. Our findings revealed that resveratrol treatment affords a protective effect, shown by increased viability and reduced viral replication, as indicated by a reduction in fluorescent signals. Additionally, we found that resveratrol inhibition of VSV infection occurs via suppression of the caspase cascade. Structural analysis also indicated that resveratrol potentially interacts with the active sites of caspase-3 and -7, facilitating antiviral activity. The potential effect of resveratrol on reducing VSV infection in vitro suggests that resveratrol should be further investigated as a potential veterinary therapeutic or prophylactic agent.
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Kankala RK, Lin WZ, Lee CH. Combating Antibiotic Resistance through the Synergistic Effects of Mesoporous Silica-Based Hierarchical Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E597. [PMID: 32214046 PMCID: PMC7153717 DOI: 10.3390/nano10030597] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 01/17/2023]
Abstract
The enormous influence of bacterial resistance to antibiotics has led researchers toward the development of various advanced antibacterial modalities. In this vein, nanotechnology-based devices have garnered interest owing to their excellent morphological as well as physicochemical features, resulting in augmented therapeutic efficacy. Herein, to overcome the multidrug resistance (MDR) in bacteria, we demonstrate the fabrication of a versatile design based on the copper-doped mesoporous silica nanoparticles (Cu-MSNs). Indeed, the impregnated Cu species in the siliceous frameworks of MSNs establish pH-responsive coordination interactions with the guest molecules, tetracycline (TET), which not only enhance their loading efficiency but also assist in their release in the acidic environment precisely. Subsequently, the ultrasmall silver nanoparticles-stabilized polyethyleneimine (PEI-SNP) layer is coated over Cu-MSNs. The released silver ions from the surface-deposited SNPs are capable of sensitizing the resistant strains through establishing the interactions with the biomembranes, and facilitate the generation of toxic free radicals, damaging the bacterial components. In addition to SNPs, Cu species impregnated in MSN frameworks synergistically act through the production of free radicals by participating in the Fenton-like reaction. Various physical characterization techniques for confirming the synthesis and successful surface modification of functional nanomaterials, as well as different antibacterial tests performed against MDR bacterial strains, are highly commendable. Remarkably, this versatile formulation has shown no significant toxic effects on normal mammalian fibroblast cells accounting for its high biocompatibility. Together, these biocompatible MSN-based trio-hybrids with synergistic efficacy and pH-responsive delivery of antibiotics potentially allow for efficient combat against MDR in bacteria.
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Affiliation(s)
- Ranjith Kumar Kankala
- Department of Life Science, National Dong Hwa University, Hualien 97401, Taiwan; (R.K.K.); (W.-Z.L.)
- College of Chemical Engineering, Huaqiao University; Xiamen 361021, China
| | - Wei-Zhi Lin
- Department of Life Science, National Dong Hwa University, Hualien 97401, Taiwan; (R.K.K.); (W.-Z.L.)
| | - Chia-Hung Lee
- Department of Life Science, National Dong Hwa University, Hualien 97401, Taiwan; (R.K.K.); (W.-Z.L.)
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Miotto B, Marchal C, Adelmant G, Guinot N, Xie P, Marto JA, Zhang L, Defossez PA. Stabilization of the methyl-CpG binding protein ZBTB38 by the deubiquitinase USP9X limits the occurrence and toxicity of oxidative stress in human cells. Nucleic Acids Res 2018; 46:4392-4404. [PMID: 29490077 PMCID: PMC5961141 DOI: 10.1093/nar/gky149] [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: 01/05/2018] [Revised: 02/05/2018] [Accepted: 02/16/2018] [Indexed: 12/29/2022] Open
Abstract
Reactive oxygen species (ROS) are a byproduct of cell metabolism, and can also arise from environmental sources, such as toxins or radiation. Depending on dose and context, ROS have both beneficial and deleterious roles in mammalian development and disease, therefore it is crucial to understand how these molecules are generated, sensed, and detoxified. The question of how oxidative stress connects to the epigenome, in particular, is important yet incompletely understood. Here we show that an epigenetic regulator, the methyl-CpG-binding protein ZBTB38, limits the basal cellular production of ROS, is induced by ROS, and is required to mount a proper response to oxidative stress. Molecularly, these functions depend on a deubiquitinase, USP9X, which interacts with ZBTB38, deubiquitinates it, and stabilizes it. We find that USP9X is itself stabilized by oxidative stress, and is required together with ZBTB38 to limit the basal generation of ROS, as well as the toxicity of an acute oxidative stress. Our data uncover a new nuclear target of USP9X, show that the USP9X/ZBTB38 axis limits, senses and detoxifies ROS, and provide a molecular link between oxidative stress and the epigenome.
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Affiliation(s)
- Benoit Miotto
- Univ. Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate, UMR 7216 CNRS, 75013 Paris, France
- Institut Cochin, Sorbonne Paris Cité, 75014 Paris, France
| | - Claire Marchal
- Univ. Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate, UMR 7216 CNRS, 75013 Paris, France
- Institut Cochin, Sorbonne Paris Cité, 75014 Paris, France
| | - Guillaume Adelmant
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Blais Proteomics Center, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Nadège Guinot
- Institut Cochin, Sorbonne Paris Cité, 75014 Paris, France
| | - Ping Xie
- State Key Laboratory of Proteomics, National Center of Protein Science (Beijing), Beijing Institute of Lifeomics, Beijing 100850, China
| | - Jarrod A Marto
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Blais Proteomics Center, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Lingqiang Zhang
- State Key Laboratory of Proteomics, National Center of Protein Science (Beijing), Beijing Institute of Lifeomics, Beijing 100850, China
| | - Pierre-Antoine Defossez
- Univ. Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate, UMR 7216 CNRS, 75013 Paris, France
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Kuthati Y, Kankala RK, Busa P, Lin SX, Deng JP, Mou CY, Lee CH. Phototherapeutic spectrum expansion through synergistic effect of mesoporous silica trio-nanohybrids against antibiotic-resistant gram-negative bacterium. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:124-133. [PMID: 28319867 DOI: 10.1016/j.jphotobiol.2017.03.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/23/2017] [Accepted: 03/06/2017] [Indexed: 01/29/2023]
Abstract
The extensive impact of antibiotic resistance has led to the exploration of new anti-bacterial modalities. We designed copper impregnated mesoporous silica nanoparticles (Cu-MSN) with immobilizing silver nanoparticles (SNPs) to apply photodynamic inactivation (PDI) of antibiotic-resistant E. coli. SNPs were decorated over the Cu-MSN surfaces by coordination of silver ions on diamine-functionalized Cu-MSN and further reduced to silver nanoparticles with formalin. We demonstrate that silver is capable of sensitizing the gram-negative bacteria E. coli to a gram-positive specific phototherapeutic agent in vitro; thereby expanding curcumin's phototherapeutic spectrum. The mesoporous structure of Cu-MSN remains intact after the exterior decoration with silver nanoparticles and subsequent curcumin loading through an enhanced effect from copper metal-curcumin affinity interaction. The synthesis, as well as successful assembly of the functional nanomaterials, was confirmed by various physical characterization techniques. Curcumin is capable of producing high amounts of reactive oxygen species (ROS) under light irradiation, which can further improve the silver ion release kinetics for antibacterial activity. In addition, the positive charged modified surfaces of Cu-MSN facilitate antimicrobial response through electrostatic attractions towards negatively charged bacterial cell membranes. The antibacterial action of the synthesized nanocomposites can be activated through a synergistic mechanism of energy transfer of the absorbed light from SNP to curcumin.
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Affiliation(s)
- Yaswanth Kuthati
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Ranjith Kumar Kankala
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Prabhakar Busa
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Shi-Xiang Lin
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Jin-Pei Deng
- Department of Chemistry, Tamkang University, New Taipei City 251, Taiwan
| | - Chung-Yuan Mou
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chia-Hung Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
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Ayyagari VN, Hsieh THJ, Diaz-Sylvester PL, Brard L. Evaluation of the cytotoxicity of the Bithionol - cisplatin combination in a panel of human ovarian cancer cell lines. BMC Cancer 2017; 17:49. [PMID: 28086831 PMCID: PMC5234112 DOI: 10.1186/s12885-016-3034-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 12/15/2016] [Indexed: 11/23/2022] Open
Abstract
Background Combination drug therapy appears a promising approach to overcome drug resistance and reduce drug-related toxicities in ovarian cancer treatments. In this in vitro study, we evaluated the antitumor efficacy of cisplatin in combination with Bithionol (BT) against a panel of ovarian cancer cell lines with special focus on cisplatin-sensitive and cisplatin-resistant cell lines. The primary objectives of this study are to determine the nature of the interactions between BT and cisplatin and to understand the mechanism(s) of action of BT-cisplatin combination. Methods The cytotoxic effects of drugs either alone or in combination were evaluated using presto-blue assay. Cellular reactive oxygen species were measured by flow cytometry. Immunoblot analysis was carried out to investigate changes in levels of cleaved PARP, XIAP, bcl-2, bcl-xL, p21 and p27. Luminescent and colorimetric assays were used to test caspases 3/7 and ATX activity. Results The efficacy of the BT-cisplatin combination depends upon the cell type and concentrations of cisplatin and BT. In cisplatin-sensitive cell lines, BT and cisplatin were mostly antagonistic except when used at low concentrations, where synergy was observed. In contrast, in cisplatin-resistant cells, BT-cisplatin combination treatment displayed synergistic effects at most of the drug ratios/concentrations. Our results further revealed that the synergistic interaction was linked to increased reactive oxygen species generation and apoptosis. Enhanced apoptosis was correlated with loss of pro-survival factors (XIAP, bcl-2, bcl-xL), expression of pro-apoptotic markers (caspases 3/7, PARP cleavage) and enhanced cell cycle regulators p21 and p27. Conclusion In cisplatin-resistant cell lines, BT potentiated cisplatin-induced cytotoxicity at most drug ratios via enhanced ROS generation and modulation of key regulators of apoptosis. Low doses of BT and cisplatin enhanced efficiency of cisplatin treatment in all the ovarian cancer cell lines tested. Our results suggest that novel combinations such as BT and cisplatin might be an attractive therapeutic approach to enhance ovarian cancer chemosensitivity. Combining low doses of cisplatin with subtherapeutic doses of BT can ultimately lead to the development of an innovative combination therapy to reduce/prevent the side effects normally occurring when high doses of cisplatin are administered. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-3034-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Vijayalakshmi N Ayyagari
- Division of Gynecologic Oncology; Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Tsung-Han Jeff Hsieh
- Division of Gynecologic Oncology; Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Paula L Diaz-Sylvester
- Division of Gynecologic Oncology; Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL, USA.,Center for Clinical Research, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Laurent Brard
- Division of Gynecologic Oncology; Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL, USA. .,Simmons Cancer Institute at SIU, Southern Illinois University School of Medicine, Springfield, IL, USA.
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Krishnan M, Tiwari B, Seema S, Kalra N, Biswas P, Rajeswari K, Suresh MB, Johnson R, Gokhale NM, Iyer SR, Londhe S, Arora V, Tripathi RP. Transparent magnesium aluminate spinel: a prospective biomaterial for esthetic orthodontic brackets. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2591-2599. [PMID: 25027301 DOI: 10.1007/s10856-014-5268-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
Adult orthodontics is recently gaining popularity due to its importance in esthetics, oral and general health. However, none of the currently available alumina or zirconia based ceramic orthodontic brackets meet the esthetic demands of adult patients. Inherent hexagonal lattice structure and associated birefringence limits the visible light transmission in polycrystalline alumina and make them appear white and non transparent. Hence focus of the present study was to assess the feasibility of using magnesium aluminate (MgAl2O4) spinel; a member of the transparent ceramic family for esthetic orthodontic brackets. Transparent spinel specimens were developed from commercially available white spinel powder through colloidal shaping followed by pressureless sintering and hot isostatic pressing at optimum conditions of temperature and pressure. Samples were characterized for chemical composition, phases, density, hardness, flexural strength, fracture toughness and optical transmission. Biocompatibility was evaluated with in-vitro cell line experiments for cytotoxicity, apoptosis and genotoxicity. Results showed that transparent spinel samples had requisite physico-chemical, mechanical, optical and excellent biocompatibility for fabricating orthodontic brackets. Transparent spinel developed through this method demonstrated its possibility as a prospective biomaterial for developing esthetic orthodontic brackets.
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Affiliation(s)
- Manu Krishnan
- Department of Dental Research & Implantology, Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), Timarpur, Delhi, 110054, India,
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