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Hobsteter AW, Irazoqui AP, Gonzalez A, Picco AS, Rubert AA, Buitrago CG, Lo Fiego MJ, Silbestri GF. Acetylated galactopyranosyl N-heterocyclic monocarbene complexes of Silver(I) as novel anti-proliferative agents in a rhabdomyosarcoma cell line. Bioorg Med Chem 2024; 107:117756. [PMID: 38759255 DOI: 10.1016/j.bmc.2024.117756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/19/2024]
Abstract
Herein, four silver(I) complexes bearing acetylated d-galactopyranoside-based N-heterocyclic carbene ligands were synthesized and fully characterized by elemental analysis, NMR, and X-ray photoelectron spectroscopy. All complexes were obtained with an anomeric β-configuration and as monocarbene species. In this study, we investigated the biological effects of the silver(I) complexes 2a-d on the human rhabdomyosarcoma cell line, RD. Our results show concentration-dependent effects on cell density, growth inhibition, and activation of key signaling pathways such as Akt 1/2, ERK 1/2, and p38-MAPK, indicating their potential as anticancer agents. Notably, at 35.5 µM, the complexes induced mitochondrial network disruption, as observed with 2b and 2c, whereas with 2a, this disruption was accompanied by nuclear content release. These results provide insight into the utility of carbohydrate incorporated NHC complexes of silver(I) as new agents in cancer therapy.
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Affiliation(s)
- Ariana W Hobsteter
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS-CONICET), 8000 Bahía Blanca, Argentina
| | - Ana P Irazoqui
- INBIOSUR (UNS-CONICET), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Comisión de Investigaciones Científicas de la provincia de Buenos Aires (CIC PBA), Argentina.
| | - Agustina Gonzalez
- INBIOSUR (UNS-CONICET), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina
| | - Agustín S Picco
- INIFTA, Fac. de Cs. Exactas, Universidad Nacional de La Plata-CONICET, 1900 La Plata, Argentina
| | - Aldo A Rubert
- INIFTA, Fac. de Cs. Exactas, Universidad Nacional de La Plata-CONICET, 1900 La Plata, Argentina
| | - Claudia G Buitrago
- INBIOSUR (UNS-CONICET), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina
| | - Marcos J Lo Fiego
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS-CONICET), 8000 Bahía Blanca, Argentina.
| | - Gustavo F Silbestri
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS-CONICET), 8000 Bahía Blanca, Argentina
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Zhan H, Lv Y, Shen R, Li C, Li M, Li Y. Bimetallic Gold/Silver and Bioactive Camptothecin Hybrid Nanoparticles for Eradication of Cancer Stem Cells in a Combination Manner. Mol Pharm 2024; 21:1450-1465. [PMID: 38335466 DOI: 10.1021/acs.molpharmaceut.3c01100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
The defeat of cancer is still a challenge due to the existence of cancer stem cells (CSCs) because they resist conventional chemotherapy via multifactor regulated mechanisms. Consequently, one-dimensional action toward CSCs cannot work. Herein, we used rationally designed hybrid nanoparticles as a combined cancer therapy, hoping to form a multidimensional control network. In this paper, gold/silver alloy nanoparticle decorated camptothecin nanocrystals were formulated according to complementary anti-CSC mechanisms from gold, silver, and organic drug. This smart drug formulation could combine chemotherapy and thermotherapy, target different tumor sites, and demonstrate versatile toxicity profiles from each component. Major results indicated that this nanosystem demonstrated indiscriminately effective cytotoxic/proapoptotic/necrotic activity against bulk MCF-7 cells and their CSC subpopulation, in particular under laser ablation. Moreover, this nanosystem displayed enhanced antineoplastic activity against CSC spheroids, resulting in a significant reduction in their number and size, that is, their self-renewal capacity. All the results indicated that CSCs upon treatment of these new hybrid nanoparticles underwent reduced stemness and conversion from the original quiescent state and recovered their sensitivity toward chemotherapy. The relevant anticancer mechanism was ascribed to NIR-pH dual responsive drug release, synergistic/combined thermo-chemotherapy of organic drug and inorganic alloy nanoparticles, enhanced cellular uptake mediated by alloy nanoparticles, and Ag+-induced biomembrane damage. This thermo-chemotherapy platform provides a new combinatorial strategy for inorganic and organic agents in the complete elimination of CSCs.
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Affiliation(s)
- Honglei Zhan
- Department of Biopharmacy, School of Bioengineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
| | - Yulong Lv
- Department of Biopharmacy, School of Bioengineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
| | - Ruiyu Shen
- Department of Biopharmacy, School of Bioengineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
| | - Chaoyue Li
- Department of Biopharmacy, School of Bioengineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
| | - Miao Li
- Department of Biopharmacy, School of Bioengineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
| | - Yahong Li
- Research Institute of Photonics, Dalian Polytechnic University, Dalian, Liaoning Province 116034, P. R. China
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Li J, Wang Z, Chen Z, Xue X, Lin K, Chen H, Pan L, Yuan Y, Ma Z. Silver complexes with substituted terpyridines as promising anticancer metallodrugs and their crystal structure, photoluminescence, and DNA interactions. Dalton Trans 2023; 52:9607-9621. [PMID: 37377144 DOI: 10.1039/d2dt03463h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Six silver hexafluoroantimonate complexes (1-6) with 4'-(4'-substituted-phenyl)-2,2':6',2''-terpyridine compounds bearing hydrogen (L1), methyl (L2), methylsulfonyl (L3), chloro (L4), bromo (L5) and iodo (L6) were prepared and characterized by 1H NMR, 13C NMR, IR, elemental analysis and single crystal X-ray diffraction. All the compounds exhibit interesting photoluminescence properties in the solid state and solution. In vitro data demonstrate that all of them show higher antiproliferative activities than cisplatin against three human carcinoma cell lines, A549, Eca-109 and MCF-7. Compound 3 exhibits the lowest IC50 value (2.298 μM) against A549 cell lines, which is 2.963 μM for 4 against Eca-109 and 1.830 μM for 1 against MCF-7. For silver halogen-substituted terpyridine compounds, their anticancer activities decrease following the sequence of -Cl, -Br, and -I substituents. The comparison results show that their anticancer activity is significantly higher than that of their free ligands. The DNA interaction was studied by fluorescence titration, circular dichroism spectroscopy and molecular modeling methods. Spectrophotometric results reveal that the compounds have strong affinity binding with DNA as intercalators and molecular docking studies indicate that the binding is contributed by the π-π stacking and hydrogen bonds. The DNA binding ability of the complexes has been correlated with their anticancer activities, which could potentially provide a new rationale for the future design of terpyridine-based metal complexes with antitumor potential.
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Affiliation(s)
- Jiahe Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China.
- National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning 530007, People's Republic of China
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisbon 1049-001, Portugal
- Department of Emergency Medicine, Second Affiliated Hospital of Zhejiang University, Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burns of Zhejiang Province, Clinical Research Center for Emergency and Critical Care Medicine of Zhejiang Province, Hangzhou 310009, People's Republic of China
| | - Zhiyuan Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China.
| | - Zhongting Chen
- Department of Emergency Medicine, Second Affiliated Hospital of Zhejiang University, Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burns of Zhejiang Province, Clinical Research Center for Emergency and Critical Care Medicine of Zhejiang Province, Hangzhou 310009, People's Republic of China
| | - Xingyong Xue
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China.
| | - Kejuan Lin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China.
| | - Hailan Chen
- School of Animal Science and Technology, Guangxi University, Nanning 530004, People's Republic of China
| | - Lixia Pan
- National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning 530007, People's Republic of China
| | - Yulin Yuan
- Department of Laboratory Medicine, Guangxi Academy of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, People's Republic of China.
| | - Zhen Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China.
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisbon 1049-001, Portugal
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Khdary NH, Alangari AA, Katubi KM, Alanazi M, Alhassan A, Alzahrani SD, Khan Z, Alanazi IO. Synthesis of Gingerol-Metals Complex and in-vitro Cytotoxic Activity on Human Colon Cancer Cell Line. Cancer Manag Res 2023; 15:87-98. [PMID: 36733670 PMCID: PMC9888304 DOI: 10.2147/cmar.s391546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 01/04/2023] [Indexed: 01/28/2023] Open
Abstract
Introduction Herbs are excellent sources of medicinal substances, and their curative abilities have been recognized to treat many ailments and are used for example as antioxidants, analgesics, anti-inflammatories, antipyretics, and many other medicinal uses. The properties of natural compounds and their health effects have been studied extensively, especially those that originate from plant sources such as ginger. The ginger plant contains many chemical compounds, such as 6-gingerol, which is characterized by containing active groups such as carbonyl and hydroxide, which can be attached to metal molecules. This is what was done in this study, where the formation of complexes with a group of metals was studied and their effect on cancer cells was investigated. These complexes will open new horizons for further study of medicinal uses. Methods The synthesis of gingerol-metal complexes was carried out by conjugating gingerol molecules with Ag, Au, Cd, Co, Cu, Ni, and Zn metal ions. The extracted gingerol was transferred to culture tubes and deionized water-DMSO were added followed by sonication. The tubes were incubated at 90°C for two days as well as the control sample. The samples were then filtered and the complex solutions were transferred into new tubes for further studies. Different characterization techniques such as FT-IR, UV-vis spectroscopy, FESEM, and EDX are used to confirm the formation of the complexes. The in vitro of the complexes was tested by the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay against the human colorectal cancer cell lines HCT116 and HT29 which exhibited strong cytotoxicity. Results The gingerol-metal complexes showed an enhancement as an anticancer agent compared to the control. The in vitro anticancer activity showed that the Ag-gingerol complex showed the most activity among the other complexes. Discussion Gingerol-metal complexes can inhibit cancer cells, noting that the potency of the complex depends on the type of metal used.
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Affiliation(s)
- Nezar H Khdary
- Institute of Materials Science, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia,Correspondence: Nezar H Khdary, Institute of Materials Science, King Abdulaziz City for Science and Technology (KACST), Riyadh, Kingdom of Saudi Arabia, Tel +966-114814236, Email
| | | | - Khadijah M Katubi
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
| | - Mohammad Alanazi
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ahmed Alhassan
- Institute of Materials Science, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia
| | - Sami D Alzahrani
- Institute of Materials Science, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia
| | - Zahid Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ibrahim O Alanazi
- Institute of Materials Science, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia,Ibrahim O Alanazi, Aging institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, Kingdom of Saudi Arabia, Tel +966114813289, Email
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Bagherzadeh M, Safarkhani M, Daneshgar H, Radmanesh F, Taghavimandi F, Ghadiri AM, Kiani M, Fatahi Y, Safari-Alighiarloo N, Ahmadi S, Rabiee N. Magnetic carbon–based nanocomposite decorated with palladium complex for co-delivery of DOX/pCRISPR. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhang J, Zhang Y, He Y, Du T, Shan D, Fan H, Wang W, Qin Z, Xin C, Pei H. Metabolome and transcriptome integration reveals insights into the process of delayed petal abscission in rose by STS. FRONTIERS IN PLANT SCIENCE 2022; 13:1045270. [PMID: 36457520 PMCID: PMC9706100 DOI: 10.3389/fpls.2022.1045270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/31/2022] [Indexed: 06/17/2023]
Abstract
The abscission of plant organs plays an important role in ensuring the normal life activities. Rose is one of the most important ornamental plants, and its premature abscission of petal has seriously affected the quality and commercial value. Silver Thiosulfate (STS) is an ethylene inhibitor, which is often used preservative to delay the senescence of fresh cut flowers. To understand the regulatory mechanism of petal abscission in rose by STS, integrative analysis of the metabolome and transcriptome profiles was performed in abscission zone (AZ) tissues of rose under different treatments (MOCK, STS, ETH, STS+ETH). The results showed that STS significantly delayed the petal abscission in phenotype and reduced the activity of two enzymes (pectinase and cellulase) associated with cell wall degradation in physiological level. STS affected the contents of five metabolites (shikonin, jasmonic acid, gluconolactone, stachyose and D-Erythrose 4-phosphate), and involved changes in the expression of 39 differentially expressed genes (DEGs) associated with these five metabolites. Five DEGs (LOC112192149, LOC112196726, LOC112189737, LOC112188495, and LOC112188936) were probably directly associated with the biosynthesis of shikonin, jasmonic acid, and D-Erythrose 4-phosphate. Meanwhile, the effect of STS on the abscission process significantly involved in the pentose phosphate pathway and amino acid biosynthesis pathway. In addition, STS had a greater effect on the transcription factors, phytohormone related DEGs represented by auxin and ethylene, DEGs related to disease resistance and amino acid, etc. Above all, STS negatively influences petal abscission of rose, these results maybe provide a reference for subsequent studies on petal abscission of rose by STS.
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4-oxoquinoline-3-carboxamide acyclonucleoside phosphonates hybrids: human MCF-7 breast cancer cell death induction by oxidative stress-promoting and in silico ADMET studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu L, An X, Schaefer M, Yan B, de la Torre C, Hillmer S, Gladkich J, Herr I. Nanosilver inhibits the progression of pancreatic cancer by inducing a paraptosis-like mixed type of cell death. Biomed Pharmacother 2022; 153:113511. [PMID: 36076598 DOI: 10.1016/j.biopha.2022.113511] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/28/2022] [Accepted: 07/30/2022] [Indexed: 11/25/2022] Open
Abstract
Silver has been in clinical use since ancient times and silver nanoparticles (AgNPs) have attracted attention in cancer therapy. We investigated the mechanisms by which AgNPs inhibit pancreatic ductal adenocarcinoma (PDAC). AgNPs were synthesized and 3 human PDAC and 2 nonmalignant primary cell lines were treated with AgNPs. MTT, MAPK, colony, spheroid and scratch assays, Western blotting, TEM, annexin V, 7-AAD, and H2DCFDA staining, FACS analysis, mRNA array and bioinformatics analyses, tumor xenograft transplantation, and immunohistochemistry of the treated cells were performed. We found that minimal AgNPs amounts selectively eradicated PDAC cells within a few hours. AgNPs inhibited cell migration and spheroid and colony formation, damaged mitochondria, and induced paraptosis-like cell death with the presence of cytoplasmic vacuoles, dilation of the ER and mitochondria, ROS formation, MAPK activity, and p62 and LC3b expression, whereas effects on the nucleus, DNA fragmentation, or caspases were not detectable. AgNPs strongly decreased tumor xenograft growth without side effects and reduced the expression of markers for proliferation and DNA repair, but upregulated paraptosis markers. The results highlight nanosilver as complementary agent to improve the therapeutic efficacy in pancreatic cancer.
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Affiliation(s)
- Li Liu
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
| | - XueFeng An
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
| | - Michael Schaefer
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
| | - Bin Yan
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
| | - Carolina de la Torre
- Microarray Analytics - NPGS Core Facility, Medical Faculty Mannheim, Ruprecht Karls University of Heidelberg, Heidelberg, Germany.
| | - Stefan Hillmer
- Electron Microscopy Core Facility, University of Heidelberg, Heidelberg, Germany.
| | - Jury Gladkich
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
| | - Ingrid Herr
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, Ruprecht Karls University of Heidelberg, Medical Faculty Heidelberg, Germany.
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Faizullin B, Gubaidullin A, Gerasimova T, Kashnik I, Brylev K, Kholin K, Nizameev I, Voloshina A, Sibgatullina G, Samigullin D, Petrov K, Musina E, Karasik A, Mustafina A. “Proton sponge” effect and apoptotic cell death mechanism of Ag -Re6 nanocrystallites derived from the assembly of [{Re6S8}(OH)6–(H2O) ]4 with Ag+ ions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Aydın A, Korkmaz N, Kısa D, Türkmenoğlu B, Karadağ A. Dicyanoargentate(I)‐based complexes induced in vivo tumor inhibition by activating apoptosis‐related pathways. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ali Aydın
- Department of Basic Medical Science, Faculty of Medicine Yozgat Bozok University Yozgat Türkiye
| | - Nesrin Korkmaz
- Department of Basic Sciences and Health Hemp Research Institute, Yozgat Bozok University Yozgat Türkiye
| | - Dursun Kısa
- Department of Molecular Biology and Genetics, Faculty of Science Bartin University Bartin Türkiye
| | - Burçin Türkmenoğlu
- Department of Analytical Chemistry, Faculty of Pharmacy Erzincan Binali Yıldırım University Türkiye
| | - Ahmet Karadağ
- Department of Chemistry, Science and Art Faculty Yozgat Bozok University Yozgat Türkiye
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Multifunctional Silver(I) Complexes with Metronidazole Drug Reveal Antimicrobial Properties and Antitumor Activity against Human Hepatoma and Colorectal Adenocarcinoma Cells. Cancers (Basel) 2022; 14:cancers14040900. [PMID: 35205647 PMCID: PMC8869984 DOI: 10.3390/cancers14040900] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 12/23/2022] Open
Abstract
Simple Summary Our previous studies demonstrated that a silver(I) nitrate complex with metronidazole presented greater photo-stability, antimicrobial, cytotoxic and genotoxic properties than silver(I) nitrate. These advantages make the complex a better candidate for clinical therapy than pure salt. Therefore, in this study, we decided to synthetize and determine the chemical, cytotoxic and antimicrobial properties of [Ag(MTZ)2]2SO4, a novel metronidazole silver(I) complex, in comparison with pure salt Ag2SO4 and [Ag(MTZ)2NO3]. The photo-stability, cytotoxicity toward cancer cells and antimicrobial activity of [Ag(MTZ)2]2SO4 is higher than Ag2SO4. What is more, we found that the novel synthetized complex shows better cytotoxicity against cancer cells than [Ag(MTZ)2NO3]. Both complexes have similar biological activity against the majority of tested bacterial strains. Abstract Silver salts and azole derivatives are well known for their antimicrobial properties. Recent evidence has demonstrated also their cytotoxic and genotoxic potential toward both normal and cancer cells. Still, little is known about the action of complexes of azoles with silver(I) salts. Thus, the goal of the study was to compare the chemical, cytotoxic and antimicrobial properties of metronidazole complexes with silver(I) nitrate and silver(I) sulfate to metronidazole and pure silver(I) salts. We synthetized a novel complex, [Ag(MTZ)2]2SO4, and confirmed its chemical structure and properties using 1H and 13C NMR spectroscopy and X-Ray, IR and elemental analysis. To establish the stability of complexes [Ag(MTZ)2NO3] and [Ag(MTZ)2]2SO4, they were exposed to daylight and UV-A rays and were visually assessed. Their cytotoxicity toward human cancer cells (HepG2, Caco-2) and mice normal fibroblasts (Balb/c 3T3 clone A31) was determined by MTT, NRU, TPC and LDH assays. The micro-dilution broth method was used to evaluate their antimicrobial properties against Gram-positive and Gram-negative bacteria. A biofilm eradication study was also performed using the crystal violet method and confocal laser scanning microscopy. The photo-stability of the complexes was higher than silver(I) salts. In human cancer cells, [Ag(MTZ)2]2SO4 was more cytotoxic than Ag2SO4 and, in turn, AgNO3 was more cytotoxic than [Ag(MTZ)2NO3]. For Balb/c 3T3 cells, Ag2SO4 was more cytotoxic than [Ag(MTZ)2]2SO4, while the cytotoxicity of AgNO3 and [Ag(MTZ)2NO3] was similar. Metronidazole in the tested concentration range was non-cytotoxic for both normal and cancer cells. The complexes showed increased bioactivity against aerobic and facultative anaerobic bacteria when compared to metronidazole. For the majority of the tested bacterial strains, the silver(I) salts and complexes showed a higher antibacterial activity than MTZ; however, some bacterial strains presented the reverse effect. Our results showed that silver(I) complexes present higher photo-stability, cytotoxicity and antimicrobial activity in comparison to MTZ and, to a certain extent, to silver(I) salts.
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Synthesis of New Thiourea-Metal Complexes with Promising Anticancer Properties. Molecules 2021; 26:molecules26226891. [PMID: 34833983 PMCID: PMC8619901 DOI: 10.3390/molecules26226891] [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: 10/24/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/25/2022] Open
Abstract
In this work, two thiourea ligands bearing a phosphine group in one arm and in the other a phenyl group (T2) or 3,5-di-CF3 substituted phenyl ring (T1) have been prepared and their coordination to Au and Ag has been studied. A different behavior is observed for gold complexes, a linear geometry with coordination only to the phosphorus atom or an equilibrium between the linear and three-coordinated species is present, whereas for silver complexes the coordination of the ligand as P^S chelate is found. The thiourea ligands and their complexes were explored against different cancer cell lines (HeLa, A549, and Jurkat). The thiourea ligands do not exhibit relevant cytotoxicity in the tested cell lines and the coordination of a metal triggers excellent cytotoxic values in all cases. In general, data showed that gold complexes are more cytotoxic than the silver compounds with T1, in particular the complexes [AuT1(PPh3)]OTf, the bis(thiourea) [Au(T1)2]OTf and the gold-thiolate species [Au(SR)T1]. In contrast, with T2 better results are obtained with silver species [AgT1(PPh3)]OTf and the [Ag(T1)2]OTf. The role played by the ancillary ligand bound to the metal is important since it strongly affects the cytotoxic activity, being the bis(thiourea) complex the most active species. This study demonstrates that metal complexes derived from thiourea can be biologically active and these compounds are promising leads for further development as potential anticancer agents.
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Antimicrobial and Anticancer Application of Silver(I) Dipeptide Complexes. Molecules 2021; 26:molecules26216335. [PMID: 34770744 PMCID: PMC8587849 DOI: 10.3390/molecules26216335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/15/2021] [Accepted: 10/17/2021] [Indexed: 11/16/2022] Open
Abstract
Three silver(I) dipeptide complexes [Ag(GlyGly)]n(NO3)n (AgGlyGly), [Ag2(GlyAla)(NO3)2]n (AgGlyAla) and [Ag2(HGlyAsp)(NO3)]n (AgGlyAsp) were prepared, investigated and characterized by vibrational spectroscopy (mid-IR), elemental and thermogravimetric analysis and mass spectrometry. For AgGlyGly, X-ray crystallography was also performed. Their stability in biological testing media was verified by time-dependent NMR measurements. Their in vitro antimicrobial activity was evaluated against selected pathogenic microorganisms. Moreover, the influence of silver(I) dipeptide complexes on microbial film formation was described. Further, the cytotoxicity of the complexes against selected cancer cells (BLM, MDA-MB-231, HeLa, HCT116, MCF-7 and Jurkat) and fibroblasts (BJ-5ta) using a colorimetric MTS assay was tested, and the selectivity index (SI) was identified. The mechanism of action of Ag(I) dipeptide complexes was elucidated and discussed by the study in terms of their binding affinity toward the CT DNA, the ability to cleave the DNA and the ability to influence numbers of cells within each cell cycle phase. The new silver(I) dipeptide complexes are able to bind into DNA by noncovalent interaction, and the topoisomerase I inhibition study showed that the studied complexes inhibit its activity at a concentration of 15 μM.
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