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Santana JEG, Oliveira-Tintino CDDM, Alencar GG, Siqueira GM, Almeida-Bezerra JW, Viana Rodrigues JP, Pinheiro Gonçalves VB, Nicolete R, Tintino SR, Coutinho HDM, Silva TGD. Liposomal nanoformulations with trans-caryophyllene and caryophyllene oxide: do they have an inhibitory action on the efflux pumps NorA, Tet(K), MsrA, and MepA? Chem Biol Interact 2024; 393:110945. [PMID: 38460934 DOI: 10.1016/j.cbi.2024.110945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/09/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024]
Abstract
This study aimed to evaluate the antibacterial and inhibitory action of NorA, Tet(K), MsrA and MepA efflux pumps in S. aureus strains using the sesquiterpenes named trans-caryophyllene and caryophyllene oxide, both isolated and encapsulated in liposomes. The antibacterial and inhibitory action of these efflux pumps was evaluated through the serial microdilution test in 96-well microplates. Each sesquiterpene and liposome/sesquiterpene was combined with antibiotics and ethidium bromide (EtBr). The antibiotics named norfloxacin, tetracycline and erythromycin were used. The 1199 B, IS-58, RN4220 and K2068 S. aureus strains carrying NorA, Tet(K), MsrA and MepA, respectively, were tested. In the fluorescence measurement test, K2068 S. aureus was incubated with the sesquiterpenes and EtBr, and the fluorescence emission by EtBr was measured. The tested substances did not show direct antibacterial activity, with MIC >1024 μg/mL. Nonetheless, the isolated trans-caryophyllene and caryophyllene oxide reduced the MIC of antibiotics and EtBr, indicating inhibition of NorA, Tet(K) and MsrA. In the fluorescence test, these same sesquiterpenes increased fluorescence emission, indicating inhibition of MepA. Therefore, the sesquiterpenes named trans-caryophyllene and caryophyllene oxide did not show direct antibacterial action; however, in their isolated form, they showed possible inhibitory action on NorA, Tet(K), MsrA and MepA efflux pumps. They may also act in antibiotic potentiation. Further studies are needed to identify the mechanisms involved in antibiotic potentiation and efflux pump inhibitory action.
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Affiliation(s)
| | | | - Gabriel Gonçalves Alencar
- Departament of Biological Chemistry, Universidade Regional Do Cariri (URCA), Crato, 63105-010, Ceará, Brazil
| | - Gustavo Miguel Siqueira
- Departament of Biological Chemistry, Universidade Regional Do Cariri (URCA), Crato, 63105-010, Ceará, Brazil
| | | | | | | | - Roberto Nicolete
- Oswaldo Cruz Foundation (Fiocruz Ceará), Eusebio, 61773-270, Ceará, Brazil
| | - Saulo Relison Tintino
- Departament of Biological Chemistry, Universidade Regional Do Cariri (URCA), Crato, 63105-010, Ceará, Brazil
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Heidari-Kalvani N, Alizadeh-Fanalou S, Yarahmadi S, Fallah S, Alipourfard I, Farahmandian N, Barjesteh F, Bahreini E. Investigation of the effects of catharanthine and Q10 on Nrf2 and its association with MMP-9, MRP1, and Bcl-2 and apoptosis in a model of hepatocellular carcinoma. Naunyn Schmiedebergs Arch Pharmacol 2024; 397:2507-2522. [PMID: 37855932 DOI: 10.1007/s00210-023-02767-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 10/02/2023] [Indexed: 10/20/2023]
Abstract
Since the role of Nrf2 in cancer cell survival has been highlighted, the pharmacological modulation of the Nrf2-Keap1 pathway may provide new opportunities for cancer treatment. This study purposed to use ubiquinone (Q10) as an antioxidant and catharanthine alkaloid as a cAMP inducer suppressing HepG2 cells by reducing Nrf2 level. The effects of Q10 and catharanthine on HepG2 cells in terms of viability were analyzed by MTT test. MTT results were used to determine the effective concentration of both drugs for the subsequent treatment and analysis. Subsequently, the effects of Q10 and catharanthine in a single and combined manner on oxidant/antioxidant status, apoptosis, metastasis, and drug resistance of HepG2 cells were investigated by related methods. Both Q10 and catharanthine decreased the level of oxidative stress products and increased antioxidant capacity in HepG2 cells. Nrf2 gene expression decreased by Q10, but catharanthine unexpectedly increased it. Following Nrf2 alterations, the expression levels of MMP-9 and MRP1 involved in metastasis and drug resistance were significantly and dose-dependently decreased by Q10, while catharanthine slightly increased both. However, both drugs increased caspase 3/7 activity and apoptosis rate, and the effect of Q10 on apoptosis was stronger than that of catharanthine. Most of the effects of the combination treatments were similar to those of the Q10 single treatment and indicated the dominant effect over the catharanthine component. Despite the antioxidant and apoptotic properties of both agents, Q10 was better than catharanthine in inducing apoptosis, counteracting drug resistance, and metastasis in HepG2 cells.
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Affiliation(s)
- Nafiseh Heidari-Kalvani
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shahin Alizadeh-Fanalou
- Department of Clinical Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Sahar Yarahmadi
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sudabeh Fallah
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Iraj Alipourfard
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Navid Farahmandian
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fereshteh Barjesteh
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Elham Bahreini
- Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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3
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Kok CY, Igoor S, Rao R, Tsurusaki S, Titus T, MacLean LM, Kadian M, Skelton R, Chong JJH, Kizana E. Overexpression of multidrug resistance-associated protein 1 protects against cardiotoxicity by augmenting the doxorubicin efflux from cardiomyocytes. J Gene Med 2024; 26:e3681. [PMID: 38484722 DOI: 10.1002/jgm.3681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/21/2024] [Accepted: 02/21/2024] [Indexed: 03/19/2024] Open
Abstract
Doxorubicin is a commonly used anti-cancer drug used in treating a variety of malignancies. However, a major adverse effect is cardiotoxicity, which is dose dependent and can be either acute or chronic. Doxorubicin causes injury by DNA damage, the formation of free reactive oxygen radicals and induction of apoptosis. Our aim is to induce expression of the multidrug resistance-associated protein 1 (MRP1) in cardiomyocytes derived from human iPS cells (hiPSC-CM), to determine whether this will allow cells to effectively remove doxorubicin and confer cardioprotection. We generated a lentivirus vector encoding MRP1 (LV.MRP1) and validated its function in HEK293T cells and stem cell-derived cardiomyocytes (hiPSC-CM) by quantitative PCR and western blot analysis. The activity of the overexpressed MRP1 was also tested, by quantifying the amount of fluorescent dye exported from the cell by the transporter. We demonstrated reduced dye sequestration in cells overexpressing MRP1. Finally, we demonstrated that hiPSC-CM transduced with LV.MRP1 were protected against doxorubicin injury. In conclusion, we have shown that we can successfully overexpress MRP1 protein in hiPSC-CM, with functional transporter activity leading to protection against doxorubicin-induced toxicity.
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Affiliation(s)
- Cindy Y Kok
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Westmead Clinical School, the Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Sindhu Igoor
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Renuka Rao
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Shinya Tsurusaki
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Tracy Titus
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Lauren M MacLean
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Megha Kadian
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Rhys Skelton
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - James J H Chong
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Westmead Clinical School, the Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Department of Cardiology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Eddy Kizana
- Centre for Heart Research, The Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Westmead Clinical School, the Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Department of Cardiology, Westmead Hospital, Westmead, New South Wales, Australia
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Schuster S, Vavra M, Wirth DAN, Kern WV. Comparative reassessment of AcrB efflux inhibitors reveals differential impact of specific pump mutations on the activity of potent compounds. Microbiol Spectr 2024; 12:e0304523. [PMID: 38170977 PMCID: PMC10846202 DOI: 10.1128/spectrum.03045-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/17/2023] [Indexed: 01/05/2024] Open
Abstract
Multidrug resistance poses global challenges, particularly with regard to Gram-negative bacterial infections. In view of the lack of new antibiotics, drug enhancers, such as efflux pump inhibitors (EPIs), have increasingly come into focus. A number of chemically diverse agents have been reported to inhibit AcrB, the main multidrug transporter in Escherichia coli, and homologs in other Gram-negative bacteria. However, due to the often varying methodologies used for their characterization, results remain difficult to compare. In this study, using a defined selection of antibiotics known to be efflux substrates, we reevaluated 38 published compounds for their in vitro EPI activity. When examined in an E. coli strain with stable wild-type AcrB overexpression, we found 17 compounds showing at least fourfold enhancing potency with more than 2 out of 10 test drugs (belonging to eight antibiotic classes). Pyranopyridines (MBX series) were confirmed as the most potent inhibitors among agents reported so far. A new and surprising finding was that their activity, unlike that of the pyridylpiperazine EPI BDM88855, was highly susceptible to the AcrB double-mutation G141D_N282Y, which had previously been shown to diminish drug enhancing of 1-(1-naphthylmethyl)piperazine in a predominantly substrate-specific manner. Conversely, transmembrane region mutation V411A, while eliminating the drug potentiating of the BDM compound, did not decrease the activity of the MBX EPIs. Besides comparative reassessment of the potency of reported EPIs, the study demonstrated the usefulness of mutagenesis approaches providing tools for an initial discrimination of EPIs regarding their mode of function.IMPORTANCEInfections with difficult-to-treat multidrug-resistant bacteria pose an urgent global threat in view of the stagnating development of new antimicrobial substances. Efflux pumps in Gram-negative pathogens are known to substantially contribute to multidrug resistance making them promising targets for chemotherapeutic interventions to restore the efficacy of conventional antibiotics. In the present study, the in vitro activity of previously reported efflux pump inhibitors was reassessed using standardized conditions. Relevant drug sensitizing activity could be proven for almost half of the tested compounds. Further characterization of potent inhibitors was achieved by investigating the impact of specific efflux pump mutations. A double-mutation previously known to decrease the activity of the arylpiperazine 1-(1-naphthylmethyl)piperazine also impaired that of the highly efficient pyranopyridine efflux pump inhibitors. Our findings provide direct comparability of reported efflux pump inhibitors and contribute to the elucidation of their mode of action.
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Affiliation(s)
- Sabine Schuster
- Division of Infectious Diseases, Department of Medicine II, University Hospital and Medical Center, Freiburg, Germany
| | - Martina Vavra
- Division of Infectious Diseases, Department of Medicine II, University Hospital and Medical Center, Freiburg, Germany
| | - Dave A. N. Wirth
- Division of Infectious Diseases, Department of Medicine II, University Hospital and Medical Center, Freiburg, Germany
| | - Winfried V. Kern
- Division of Infectious Diseases, Department of Medicine II, University Hospital and Medical Center, Freiburg, Germany
- Faculty of Medicine, Albert-Ludwigs University, Freiburg, Germany
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da Silva L, Donato IA, Bezerra SR, Dos Santos HS, Bandeira PN, do Nascimento MTR, Guedes JM, Freitas PR, de Araújo ACJ, de Freitas TS, Coutinho HDM, de Matos YMLS, de Oliveira LCC, da Cunha FAB. Synthesis, spectroscopic characterization, and antibacterial activity of chalcone (2E)-1-(3'-aminophenyl)-3-(4-dimethylaminophenyl)-prop-2-en-1-one against multiresistant Staphylococcus aureus carrier of efflux pump mechanisms and β-lactamase. Fundam Clin Pharmacol 2024; 38:60-71. [PMID: 37497790 DOI: 10.1111/fcp.12938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/29/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND The bacterium Staphylococcus aureus has stood out for presenting a high adaptability, acquiring resistance to multiple drugs. The search for natural or synthetic compounds with antibacterial properties capable of reversing the resistance of S. aureus is the main challenge to be overcome today. Natural products such as chalcones are substances present in the secondary metabolism of plants, presenting important biological activities such as antitumor, antidiabetic, and antimicrobial activity. OBJECTIVES In this context, the aim of this work was to synthesize the chalcone (2E)-1-(3'-aminophenyl)-3-(4-dimethylaminophenyl)-prop-2-en-1-one with nomenclature CMADMA, confirm its structure by nuclear magnetic resonance (NMR), and evaluate its antibacterial properties. METHODS The synthesis methodology used was that of Claisen-Schmidt, and spectroscopic characterization was performed by NMR. For microbiological assays, the broth microdilution methodology was adopted in order to analyze the antibacterial potential of chalcones and to analyze their ability to act as a possible inhibitor of β-lactamase and efflux pump resistance mechanisms, present in S. aureus strain K4100. RESULTS The results obtained show that CMADMA does not show direct antibacterial activity, expressing a MIC of ≥1024 μg/mL, or on the enzymatic mechanism of β-lactamase; however, when associated with ethidium bromide in efflux pump inhibition assays, CMADMA showed promising activity by reducing the MIC of the bromide from 64 to 32 μg/mL. CONCLUSION We conclude that the chalcone synthesized in this study is a promising substance to combat bacterial resistance, possibly acting in the inhibition of the QacC efflux pump present in S. aureus strain K4100, as evidenced by the reduction in the MIC of ethidium bromide.
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Affiliation(s)
- Larissa da Silva
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, Brazil
| | - Isydório Alves Donato
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, Brazil
| | - Suieny Rodrigues Bezerra
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, Brazil
| | - Hélcio Silva Dos Santos
- Chemical Laboratory of Natural and Synthetic Products (LQPN), State University of Ceará (UECE), Fortaleza, Brazil
- Department of Chemistry, Vale do Acaraú State University, Sobral, Brazil
- Postgraduate Program in Natural Sciences - PPGCN, State University of Ceará, Fortaleza, Brazil
| | - Paulo Nogueira Bandeira
- Chemical Laboratory of Natural and Synthetic Products (LQPN), State University of Ceará (UECE), Fortaleza, Brazil
| | | | - Jesyka Macêdo Guedes
- Chemical Laboratory of Natural and Synthetic Products (LQPN), State University of Ceará (UECE), Fortaleza, Brazil
| | - Priscila Ramos Freitas
- Laboratory of Microbiology and Molecular Biology (LMBM), Department of Biological Chemistry, URCA, Crato, Brazil
| | | | - Thiago Sampaio de Freitas
- Laboratory of Microbiology and Molecular Biology (LMBM), Department of Biological Chemistry, URCA, Crato, Brazil
| | | | | | | | - Francisco Assis Bezerra da Cunha
- Laboratory of Semi-Arid Bioprospecting (LABSEMA), Department of Biological Chemistry, URCA, Crato, Brazil
- Chemical Laboratory of Natural and Synthetic Products (LQPN), State University of Ceará (UECE), Fortaleza, Brazil
- Department of Chemistry, Vale do Acaraú State University, Sobral, Brazil
- Postgraduate Program in Natural Sciences - PPGCN, State University of Ceará, Fortaleza, Brazil
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Souza MAD, Rodrigues LG, Rocha JE, de Freitas TS, Bandeira PN, Marinho MM, Nunes da Rocha M, Marinho ES, Honorato Barreto AC, Coutinho HDM, Silva LMA, Julião MSDS, Marques Canuto K, Marques da Fonseca A, Teixeira AMR, Dos Santos HS. Synthesis, structural, characterization, antibacterial and antibiotic modifying activity, ADMET study, molecular docking and dynamics of chalcone ( E)-1-(4-aminophenyl)-3-(4-nitrophenyl)prop-2-en-1-one in strains of Staphylococcus aureus carrying NorA and MepA efflux pumps. J Biomol Struct Dyn 2024; 42:1670-1691. [PMID: 37222682 DOI: 10.1080/07391102.2023.2213777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 04/05/2023] [Indexed: 05/25/2023]
Abstract
Chalcones have an open chain flavonoid structure that can be obtained from natural sources or by synthesis and are widely distributed in fruits, vegetables, and tea. They have a simple and easy to handle structure due to the α-β-unsaturated bridge responsible for most biological activities. The facility to synthesize chalcones combined with its efficient in combating serious bacterial infections make these compounds important agents in the fight against microorganisms. In this work, the chalcone (E)-1-(4-aminophenyl)-3-(4-nitrophenyl)prop-2-en-1-one (HDZPNB) was characterized by spectroscopy and electronic methods. In addition, microbiological tests were performed to investigate the modulator potential and efflux pump inhibition on S. aureus multi-resistant strains. The modulating effect of HDZPNB chalcone in association with the antibiotic norfloxacin, on the resistance of the S. aureus 1199 strain, resulted in increase the MIC. In addition, when HDZPNB was associated with ethidium bromide (EB), it caused an increase in the MIC value, thus not inhibiting the efflux pump. For the strain of S. aureus 1199B, carrying the NorA pump, the HDZPNB associated with norfloxacin showed no modulatory, and when the chalcone was used in association with EB, it had no inhibitory effect on the efflux pump. For the tested strain of S. aureus K2068, which carries the MepA pump, it can be observed that the chalcone together the antibiotic resulted in an increase the MIC. On the other hand, when chalcone was used in association with EB, it caused a decrease in bromide MIC, equal to the reduction caused by standard inhibitors. Thus, these results indicate that the HDZPNB could also act as an inhibitor of the S. aureus gene overexpressing pump MepA. The molecular docking reveals that chalcone has a good binding energies -7.9 for HDZPNB/MepA complexes, molecular dynamics simulations showed that Chalcone/MetA complexes showed good stability of the structure in an aqueous solution, and ADMET study showed that the chalcone has a good oral bioavailability, high passive permeability, low risk of efflux, low clearance rate and low toxic risk by ingestion. The microbiological tests show that the chalcone can be used as a possible inhibitor of the Mep A efflux pump.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mikael Amaro de Souza
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
| | - Leilane Gomes Rodrigues
- Science and Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, Brazil
| | - Janaina Esmeraldo Rocha
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
| | - Thiago Sampaio de Freitas
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
| | - Paulo Nogueira Bandeira
- Science and Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, Brazil
| | - Márcia Machado Marinho
- Science and Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, Brazil
| | | | | | | | - Henrique Douglas Melo Coutinho
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
| | | | - Murilo Sergio da Silva Julião
- Science and Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, Brazil
- Graduate Program in Natural Science, State University of Ceará, Fortaleza, CE, Brazil
| | - Kirley Marques Canuto
- Multiusuary Laboratory of Natural Products Chemistry, Embrapa Tropical Agroindustry, Fortaleza, CE, Brazil
| | - Aluísio Marques da Fonseca
- Academic Master's Degree in Sociobiodiversity and Sustainable Technologies - MASTS, Institute of Engineering and Development Sustainable, University of International Integration of Afro-Brazilian Lusofonia, Acarape, CE, Brazil
| | - Alexandre Magno Rodrigues Teixeira
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
- Graduate Program in Natural Science, State University of Ceará, Fortaleza, CE, Brazil
| | - Hélcio Silva Dos Santos
- Graduate Program in Biological Chemistry, Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
- Science and Technology Centre, Course of Chemistry, State University Vale do Acaraú, Sobral, CE, Brazil
- Graduate Program in Natural Science, State University of Ceará, Fortaleza, CE, Brazil
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7
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Tague N, Coriano-Ortiz C, Sheets MB, Dunlop MJ. Light-inducible protein degradation in E. coli with the LOVdeg tag. eLife 2024; 12:RP87303. [PMID: 38270583 PMCID: PMC10945698 DOI: 10.7554/elife.87303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
Molecular tools for optogenetic control allow for spatial and temporal regulation of cell behavior. In particular, light-controlled protein degradation is a valuable mechanism of regulation because it can be highly modular, used in tandem with other control mechanisms, and maintain functionality throughout growth phases. Here, we engineered LOVdeg, a tag that can be appended to a protein of interest for inducible degradation in Escherichia coli using blue light. We demonstrate the modularity of LOVdeg by using it to tag a range of proteins, including the LacI repressor, CRISPRa activator, and the AcrB efflux pump. Additionally, we demonstrate the utility of pairing the LOVdeg tag with existing optogenetic tools to enhance performance by developing a combined EL222 and LOVdeg system. Finally, we use the LOVdeg tag in a metabolic engineering application to demonstrate post-translational control of metabolism. Together, our results highlight the modularity and functionality of the LOVdeg tag system and introduce a powerful new tool for bacterial optogenetics.
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Affiliation(s)
- Nathan Tague
- Department of Biomedical Engineering, Boston UniversityBostonUnited States
- Biological Design Center, Boston UniversityBostonUnited States
| | - Cristian Coriano-Ortiz
- Department of Biomedical Engineering, Boston UniversityBostonUnited States
- Biological Design Center, Boston UniversityBostonUnited States
| | - Michael B Sheets
- Department of Biomedical Engineering, Boston UniversityBostonUnited States
- Biological Design Center, Boston UniversityBostonUnited States
| | - Mary J Dunlop
- Department of Biomedical Engineering, Boston UniversityBostonUnited States
- Biological Design Center, Boston UniversityBostonUnited States
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8
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Kather S, Kacza J, Pfannkuche H, Böttcher D, Sung CH, Steiner JM, Gäbel G, Dengler F, Heilmann RM. Expression of the cobalamin transporters cubam and MRP1 in the canine ileum-Upregulation in chronic inflammatory enteropathy. PLoS One 2024; 19:e0296024. [PMID: 38206981 PMCID: PMC10783779 DOI: 10.1371/journal.pone.0296024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 12/04/2023] [Indexed: 01/13/2024] Open
Abstract
Chronic inflammatory enteropathy (CIE) in dogs, a spontaneous model of human inflammatory bowel disease (IBD), is associated with a high rate of cobalamin deficiency. The etiology of hypocobalaminemia in human IBD and canine CIE remains unknown, and compromised intestinal uptake of cobalamin resulting from ileal cobalamin receptor deficiency has been proposed as a possible cause. Here, we evaluated the intestinal expression of the cobalamin receptor subunits, amnionless (AMN) and cubilin (CUBN), and the basolateral efflux transporter multi-drug resistance protein 1 (MRP1) in 22 dogs with CIE in comparison to healthy dogs. Epithelial CUBN and AMN levels were quantified by confocal laser scanning microscopy using immunohistochemistry in endoscopic ileal biopsies from dogs with (i) CIE and normocobalaminemia, (ii) CIE and suboptimal serum cobalamin status, (iii) CIE and severe hypocobalaminemia, and (iv) healthy controls. CUBN and MRP1 expression was quantified by RT-qPCR. Receptor expression was evaluated for correlation with clinical patient data. Ileal mucosal protein levels of AMN and CUBN as well as mRNA levels of CUBN and MRP1 were significantly increased in dogs with CIE compared to healthy controls. Ileal cobalamin receptor expression was positively correlated with age, clinical disease activity index (CCECAI) score, and lacteal dilation in the ileum, inversely correlated with serum folate concentrations, but was not associated with serum cobalamin concentrations. Cobalamin receptor downregulation does not appear to be the primary cause of hypocobalaminemia in canine CIE. In dogs of older age with severe clinical signs and/or microscopic intestinal lesions, intestinal cobalamin receptor upregulation is proposed as a mechanism to compensate for CIE-associated hypocobalaminemia. These results support oral supplementation strategies in hypocobalaminemic CIE patients.
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Affiliation(s)
- Stefanie Kather
- Small Animal Clinic, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
- Institute of Veterinary Physiology, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
| | - Johannes Kacza
- BioImaging Core Facility, College of Veterinary Medicine, Saxon Incubator for Clinical Translation, University of Leipzig, Leipzig, SN, Germany
| | - Helga Pfannkuche
- Institute of Veterinary Physiology, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
| | - Denny Böttcher
- Institute of Veterinary Pathology, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
| | - Chi-Hsuan Sung
- Gastrointestinal Laboratory, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States of America
| | - Joerg M. Steiner
- Gastrointestinal Laboratory, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States of America
| | - Gotthold Gäbel
- Institute of Veterinary Physiology, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
| | - Franziska Dengler
- Institute of Veterinary Physiology, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
- Institute for Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Romy M. Heilmann
- Small Animal Clinic, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, SN, Germany
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Ika Irianti M, Vincken JP, van Dinteren S, Ter Beest E, Pos KM, Araya-Cloutier C. Prenylated isoflavonoids from Fabaceae against the NorA efflux pump in Staphylococcus aureus. Sci Rep 2023; 13:22548. [PMID: 38110428 PMCID: PMC10728173 DOI: 10.1038/s41598-023-48992-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/02/2023] [Indexed: 12/20/2023] Open
Abstract
Overexpression of NorA efflux pumps plays a pivotal role in the multidrug-resistance mechanism in S. aureus. Here, we investigated the activities of prenylated isoflavonoids, present in the legume plant family (Fabaceae), as natural efflux pump inhibitors (EPIs) in fluoroquinolone-resistant S. aureus. We found that four prenylated isoflavonoids, namely neobavaisoflavone, glabrene, glyceollin I, and glyceollin III, showed efflux pump inhibition in the norA overexpressing S. aureus. At sub-inhibitory concentrations, neobavaisoflavone (6.25 µg/mL, 19 µM) and glabrene (12.5 µg/mL, 39 µM), showed up to 6 times more Eth accumulation in norA overexpressing S. aureus than in the control. In addition, these two compounds boosted the MIC of fluoroquinolones up to eightfold. No fluoroquinolone potentiation was observed with these isoflavonoids in the norA knockout strain, indicating NorA as the main target of these potential EPIs. In comparison to the reported NorA EPI reserpine, neobavaisoflavone showed similar potentiation of fluoroquinolone activity at 10 µM, higher Eth accumulation, and less cytotoxicity. Neobavaisoflavone and glabrene did not exhibit membrane permeabilization effects or cytotoxicity on Caco-2 cells. In conclusion, our findings suggest that the prenylated isoflavonoids neobavaisoflavone and glabrene are promising phytochemicals that could be developed as antimicrobials and resistance-modifying agents to treat fluoroquinolone-resistant S. aureus strains.
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Affiliation(s)
- Marina Ika Irianti
- Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
- Laboratory of Microbiology and Biotechnology, Faculty of Pharmacy, Universitas Indonesia, Depok, 16424, Indonesia
| | - Jean-Paul Vincken
- Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Sarah van Dinteren
- Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Ellen Ter Beest
- Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Klaas Martinus Pos
- Institute of Biochemistry, Goethe-University Frankfurt, 60438, Frankfurt am Main, Germany
| | - Carla Araya-Cloutier
- Laboratory of Food Chemistry, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands.
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10
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Casemayou A, Belliere J, Letavernier E, Colliou E, El Hachem H, Zarowski J, Bazin D, Kounde C, Piedrafita A, Feuillet G, Schanstra JP, Faguer S. Abcc6 deficiency prevents rhabdomyolysis-induced acute kidney injury. Sci Rep 2023; 13:21513. [PMID: 38057332 PMCID: PMC10700332 DOI: 10.1038/s41598-023-47894-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Rhabdomyolysis is a risk factor for acute kidney injury, transition towards chronic kidney disease, and death. The role of calcium phosphate deposits in the mechanisms of rhabdomyolysis-induced acute kidney injury (RAKI) is still unclear. Better insight of the role calcium in RAKI could lead to new therapeutic avenues. Here, we show in a mice model of RAKI that calcium phosphate deposits were frequent in the kidney (hydroxyapatite) and partly correlated with the severity of the kidney injury. However, the intensity of deposits was highly heterogeneous between mice. Treatment with sodium chloride, sodium bicarbonate or inorganic pyrophosphate (PPi; an inhibitor of the calcium phosphate crystallization), or combinations thereof, did not improve kidney outcomes and hydroxyapatite deposition during RAKI. Unexpectedly, Abcc6 knockout mice (ko), characterized by PPi deficiency, developed less severe RAKI despite similar rhabdomyolysis severity, and had similar hydroxyapatite deposition suggesting alternative mechanisms. This improved kidney outcome at day 2 translated to a trend in improved glomerular filtration rate at month 2 in Abcc6-/-mice and to significantly less interstitial fibrosis. In addition, whereas the pattern of infiltrating cells at day 2 was similar between wt and ko mice, kidneys of Abcc6-/- mice were characterized by more CD19+ B-cells, less CD3+ T-cells and a lower R1/R2 macrophage ratio at month 2. In summary, kidney calcium phosphate deposits are frequent in RAKI but hydration with sodium bicarbonate or sodium chloride does not modify the kidney outcome. Blocking ABCC6 emerges as a new option to prevent RAKI and subsequent transition toward kidney fibrosis.
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Affiliation(s)
- Audrey Casemayou
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
- University Toulouse-3, 31000, Toulouse, France
| | - Julie Belliere
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
- University Toulouse-3, 31000, Toulouse, France
| | - Emmanuel Letavernier
- National Institute of Health and Medical Research, (INSERM) UMR S 1155, Tenon Hospital, 75020, Paris, France
- Sorbonne University, 75020, Paris, France
- Department of Physiology, Tenon Hospital, Assistance Publique - Hôpitaux de Paris, 75020, Paris, France
| | - Eloïse Colliou
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
- University Toulouse-3, 31000, Toulouse, France
| | - Hélène El Hachem
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
| | - Jeremy Zarowski
- Department of Physiology, Tenon Hospital, Assistance Publique - Hôpitaux de Paris, 75020, Paris, France
| | - Dominique Bazin
- Laboratory of Chemistry and Physics, CNRS UMR 8000, University Paris XI, 91405, Orsay, France
| | - Clément Kounde
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
| | - Alexis Piedrafita
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
- University Toulouse-3, 31000, Toulouse, France
| | - Guylène Feuillet
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
| | - Joost P Schanstra
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France
- Department of Physiology, Tenon Hospital, Assistance Publique - Hôpitaux de Paris, 75020, Paris, France
| | - Stanislas Faguer
- Department of Nephrology and Organ Transplantation, Reference Centre for Rare Kidney Diseases (SORARE), French Intensive Care Renal Network (FIRN), University Hospital of Toulouse, 1, Avenue du Pr. Jean Poulhes, 31059, Toulouse Cedex, France.
- National Institute of Health and Medical Research (INSERM), Institute of Metabolic and Cardiovascular Diseases (I2MC), UMR 1297, Rangueil Hospital, 31000, Toulouse, France.
- Department of Physiology, Tenon Hospital, Assistance Publique - Hôpitaux de Paris, 75020, Paris, France.
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11
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Santana JEG, Oliveira-Tintino CDDM, Gonçalves Alencar G, Siqueira GM, Sampaio Alves D, Moura TF, Tintino SR, de Menezes IRA, Rodrigues JPV, Gonçalves VBP, Nicolete R, Emran TB, Gonçalves Lima CM, Ahmad SF, Coutinho HDM, da Silva TG. Comparative Antibacterial and Efflux Pump Inhibitory Activity of Isolated Nerolidol, Farnesol, and α-Bisabolol Sesquiterpenes and Their Liposomal Nanoformulations. Molecules 2023; 28:7649. [PMID: 38005371 PMCID: PMC10675182 DOI: 10.3390/molecules28227649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/31/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
The efflux systems are considered important mechanisms of bacterial resistance due to their ability to extrude various antibiotics. Several naturally occurring compounds, such as sesquiterpenes, have demonstrated antibacterial activity and the ability to inhibit efflux pumps in resistant strains. Therefore, the objective of this research was to analyze the antibacterial and inhibitory activity of the efflux systems NorA, Tet(K), MsrA, and MepA by sesquiterpenes nerolidol, farnesol, and α-bisabolol, used either individually or in liposomal nanoformulation, against multi-resistant Staphylococcus aureus strains. The methodology consisted of in vitro testing of the ability of sesquiterpenes to reduce the Minimum Inhibitory Concentration (MIC) and enhance the action of antibiotics and ethidium bromide (EtBr) in broth microdilution assays. The following strains were used: S. aureus 1199B carrying the NorA efflux pump, resistant to norfloxacin; IS-58 strain carrying Tet(K), resistant to tetracyclines; RN4220 carrying MsrA, conferring resistance to erythromycin. For the EtBr fluorescence measurement test, K2068 carrying MepA was used. It was observed the individual sesquiterpenes exhibited better antibacterial activity as well as efflux pump inhibition. Farnesol showed the lowest MIC of 16.5 µg/mL against the S. aureus RN4220 strain. Isolated nerolidol stood out for reducing the MIC of EtBr to 5 µg/mL in the 1199B strain, yielding better results than the positive control CCCP, indicating strong evidence of NorA inhibition. The liposome formulations did not show promising results, except for liposome/farnesol, which reduced the MIC of EtBr against 1199B and RN4220. Further research is needed to evaluate the mechanisms of action involved in the inhibition of resistance mechanisms by the tested compounds.
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Affiliation(s)
| | - Cícera Datiane de Morais Oliveira-Tintino
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Gabriel Gonçalves Alencar
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Gustavo Miguel Siqueira
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Daniel Sampaio Alves
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Talysson Felismino Moura
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Saulo Relison Tintino
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Irwin Rose Alencar de Menezes
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | | | | | - Roberto Nicolete
- Oswaldo Cruz Foundation (Fiocruz Ceará), Eusebio 61773-270, Brazil; (J.P.V.R.); (V.B.P.G.); (R.N.)
| | - Talha Bin Emran
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown University, Providence, RI 02912, USA;
- Legorreta Cancer Center, Brown University, Providence, RI 02912, USA
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | | | - Sheikh F. Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Henrique Douglas Melo Coutinho
- Departament of Biological Chemistry, Universidade Regional do Cariri (URCA), Crato 63105-010, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (D.S.A.); (T.F.M.); (S.R.T.); (I.R.A.d.M.)
| | - Teresinha Gonçalves da Silva
- Departamento de Antibióticos, Universidade Federal de Pernambuco (UFPE), Recife 50670-901, Brazil; (J.E.G.S.); (T.G.d.S.)
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12
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Wu M, Zhang Y, Tian T, Xu D, Wu Q, Xie W, Zhang Y, Crickmore N, Guo Z, Wang S. Assessment of the role of an ABCC transporter TuMRP1 in the toxicity of abamectin to Tetranychus urticae. Pestic Biochem Physiol 2023; 195:105543. [PMID: 37666614 DOI: 10.1016/j.pestbp.2023.105543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 09/06/2023]
Abstract
The rapid evolution of pest resistance threatens the sustainable utilization of bioinsecticides such as abamectin, and so deciphering the molecular mechanisms affecting toxicity and resistance is essential for their long-term application. Historical studies of abamectin resistance in arthropods have mainly focused on mechanisms involving the glutamate-gated chloride channel (GluCl) targets, with the role of metabolic processes less clear. The two-spotted spider mite, Tetranychus urticae, is a generalist herbivore notorious for rapidly developing resistance to pesticides worldwide, and abamectin has been widely used for its control in the field. After reanalyzing previous transcriptome and RNA-seq data, we here identified an ABC transporter subfamily C gene in T. urticae named multidrug resistance-associated protein 1 (TuMRP1), whose expression differed between susceptible and resistant populations. Synergism bioassays with the inhibitor MK-571, the existence of a genetic association between TuMRP1 expression and susceptibility to abamectin, and the effect of RNA interference mediated silencing of TuMRP1 were all consistent with a direct role of this transporter protein in the toxicity of abamectin. Although ABC transporters are often involved in removing insecticidal compounds from cells, our data suggest either an alternative role for these proteins in the mechanism of action of abamectin or highlight an indirect association between their expression and abamectin toxicity.
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Affiliation(s)
- Mingmei Wu
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yan Zhang
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Tian Tian
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; College of Agriculture, Yangtze University, Hubei, Jingzhou 434025, China.
| | - Dandan Xu
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Longping Branch, College of Biology, Hunan University, Changsha 410125, China.
| | - Qingjun Wu
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Wen Xie
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Youjun Zhang
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Neil Crickmore
- School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK.
| | - Zhaojiang Guo
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Shaoli Wang
- State Key Laboratory of Vegetable Biobreeding, Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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13
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Martin ALAR, Pereira RLS, Rocha JE, Farias PAM, Freitas TS, de Lemos Caldas FR, Figueredo FG, Sampaio NFL, Ribeiro-Filho J, Menezes IRDA, Brancaglion GA, de Paulo DC, Carvalho DT, Lima MA, Coutinho HDM, Fonteles MMF. In vitro and in silico evidences about the inhibition of MepA efflux pump by coumarin derivatives. Microb Pathog 2023; 182:106246. [PMID: 37454945 DOI: 10.1016/j.micpath.2023.106246] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
The discovery of antibiotics has significantly transformed the outcomes of bacterial infections in the last decades. However, the development of antibiotic resistance mechanisms has allowed an increasing number of bacterial strains to overcome the action of antibiotics, decreasing their effectiveness against infections they were developed to treat. This study aimed to evaluate the antibacterial activity of synthetic coumarins Staphylococcus aureus in vitro and analyze their interaction with the MepA efflux pump in silico. The Minimum Inhibitory Concentration (MIC) determination showed that none of the test compounds have antibacterial activity. However, all coumarin derivatives decreased the MIC of the standard efflux inhibitor ethidium bromide, indicating antibacterial synergism. On the other hand, the C14 derivative potentiated the antibacterial activity of ciprofloxacin against the resistant strain. In silico analysis showed that C9, C11, and C13 coumarins showed the most favorable interaction with the MepA efflux pump. Nevertheless, due to the present in silico and in vitro investigation limitations, further experimental research is required to confirm the therapeutic potential of these compounds in vivo.
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Affiliation(s)
- Ana Luíza A R Martin
- Federal University of Ceará - UFC, Brazil; Faculty of Medicine Estácio Juazeiro do Norte - Estácio Juazeiro do Norte, Brazil
| | | | | | - Pablo A M Farias
- Faculty of Medicine Estácio Juazeiro do Norte - Estácio Juazeiro do Norte, Brazil
| | | | | | - Fernando G Figueredo
- Regional University of Cariri - URCA, Brazil; Faculty of Medicine Estácio Juazeiro do Norte - Estácio Juazeiro do Norte, Brazil
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14
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Kumar G, Kiran Tudu A. Tackling multidrug-resistant Staphylococcus aureus by natural products and their analogues acting as NorA efflux pump inhibitors. Bioorg Med Chem 2023; 80:117187. [PMID: 36731248 DOI: 10.1016/j.bmc.2023.117187] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/29/2023]
Abstract
Staphylococcus aureus (S. aureus) is a pathogen responsible for various community and hospital-acquired infections with life-threatening complications like bacteraemia, endocarditis, meningitis, liver abscess, and spinal cord epidural abscess. Antibiotics have been used to treat microbial infections since the introduction of penicillin in 1940. In recent decades, the abuse and misuse of antibiotics in humans, animals, plants, and fungi, including the treatment of non-microbial diseases, have led to the rapid emergence of multidrug-resistant pathogens with increased virulence. Bacteria have developed several complementary mechanisms to avoid the effects of antibiotics. These mechanisms include chemical transformations and enzymatic inactivation of antibiotics, modification of antibiotics' target site, and reduction of intracellular antibiotics concentration by changes in membrane permeability or by the overexpression of efflux pumps (EPs). The strategy to check antibiotic resistance includes synthesis of the antibiotic analogues, or antibiotics are given in combination with the adjuvant. The inhibitors of multidrug EPs are considered promising alternative therapeutic options with the potential to revive the effects of antibiotics and reduce bacterial virulence. Natural products played a vital role in drug discovery and significantly contributed to the area of infectious diseases. Also, natural products provide lead compounds that sometimes need modification based on structural and biological properties to meet the drug criteria. This review discusses natural products and their derived compounds as NorA efflux pump inhibitors (EPIs).
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Affiliation(s)
- Gautam Kumar
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, Telangana 500037, India.
| | - Asha Kiran Tudu
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, Telangana 500037, India
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15
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Phan TV, Nguyen VTV, Nguyen CHH, Vu TT, Tran TD, Le MT, Trinh DTT, Tran VH, Thai KM. Discovery of AcrAB-TolC pump inhibitors: Virtual screening and molecular dynamics simulation approach. J Biomol Struct Dyn 2023; 41:12503-12520. [PMID: 36762699 DOI: 10.1080/07391102.2023.2175381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/04/2023] [Indexed: 02/11/2023]
Abstract
AcrAB-TolC tripartite efflux pump, which belongs to the RND superfamily, is a main multi-drug efflux system of Escherichia coli (E. coli) because of the broad resistance on various antibiotics. With the discovering of efflux pump inhibitors (EPIs), a combination between these and antibiotics is one of the most promising therapies. Therefore, building a virtual screening model with prediction capacities for the efflux pump inhibitory activities of candidates from DrugBank and ZINC15 dataset, is one of the key goals of this project. Based on the database of 170 diverse chemical structures collected from 28 research journals, two 2D-QSAR models and a 3D-pharmacophore model have been performed. On the AcrB protein (PDB 4DX7), two binding sites have been discovered that match to the hydrophobic trap in the distal pocket and the switch loop in the proximal pocket. After virtual screening processes, twenty candidate AcrAB-TolC inhibitors have been subjected to molecular dynamics simulations, binding free energy calculations and ADMET predictions. The results indicate that three compounds namely DB09233, DB02581, and DB15224 are potential inhibitors with ΔGbind of -42.30 ± 4.58, -40.76 ± 7.30 and -31.06 ± 7.63 kcal.mol-1, respectively.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Thien-Vy Phan
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
- Department of Pharmacy, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Vu-Thuy-Vy Nguyen
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
- Department of Pharmacy, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | | | - Thanh-Thao Vu
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
| | - Thanh-Dao Tran
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
| | - Minh-Tri Le
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
- School of Medicine, Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dieu-Thuong Thi Trinh
- Faculty of Traditional Medicine, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
| | - Viet-Hung Tran
- Institute of Drug, Quality Control, Ho Chi Minh City, Vietnam
| | - Khac-Minh Thai
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh City, Vietnam
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16
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Yu T, Du H, Sun C. Circ-ABCC4 contributes to prostate cancer progression and radioresistance by mediating miR-1253/SOX4 cascade. Anticancer Drugs 2023; 34:155-165. [PMID: 36539368 PMCID: PMC9760474 DOI: 10.1097/cad.0000000000001361] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 12/24/2022]
Abstract
Circular RNAs (circRNAs) exert pivotal functions in many malignancies. However, the roles of circ-ABCC4 in prostate cancer (PCa) radioresistance and progression remain largely unclear. Cell viability, proliferation, apoptosis, invasion, and radioresistance were evaluated by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide, 5-ethynyl-2'-deoxyuridine, flow cytometry, transwell invasion, and colony formation assays. Tumor xenograft experiment was conducted to assess circ-ABCC4 role in xenograft growth in vivo. Dual-luciferase reporter assay was implemented to test the target relation of microRNA-1253 (miR-1253) and circ-ABCC4 or SRY-box transcription factor 4 (SOX4). Circ-ABCC4 enrichment was prominently raised in PCa tissue specimens and cells. Circ-ABCC4 depletion blocked PCa cell viability, proliferation, invasion, and radioresistance and triggered apoptosis. Circ-ABCC4 silencing aggravated irradiation-induced inhibitory effect on xenografts growth. miR-1253 was a downstream molecule of circ-ABCC4, and circ-ABCC4 depletion-mediated anti-cancer impacts in PCa cells were partly counteracted by decreasing miR-1253 abundance. miR-1253 targeted SOX4 mRNA, and miR-1253 blocked PCa cell malignant phenotypes partly by targeting SOX4. Circ-ABCC4 could enhance SOX4 abundance by absorbing miR-1253. Circ-ABCC4 exerted a pro-tumor activity by facilitating PCa cell viability, proliferation, invasion, and radioresistance and suppressing apoptosis.
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Affiliation(s)
- Tao Yu
- Department of Urology, Weihai Central Hospital, Weihai
| | - Hong Du
- Department of Urology, Weihai Central Hospital, Weihai
| | - Changhai Sun
- Department of Urology, Qingdao Women’s and Children’s Hospital, Qingdao, Shandong, China
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Ashar Y, Teng Q, Wurpel JND, Chen ZS, Reznik SE. Palmitic Acid Impedes Extravillous Trophoblast Activity by Increasing MRP1 Expression and Function. Biomolecules 2022; 12:1162. [PMID: 36009056 PMCID: PMC9406058 DOI: 10.3390/biom12081162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 12/05/2022] Open
Abstract
Normal function of placental extravillous trophoblasts (EVTs), which are responsible for uteroplacental vascular remodeling, is critical for adequate delivery of oxygen and nutrients to the developing fetus and normal fetal programming. Proliferation and invasion of spiral arteries by EVTs depends upon adequate levels of folate. Multidrug resistance-associated protein 1 (MRP1), which is an efflux transporter, is known to remove folate from these cells. We hypothesized that palmitic acid increases MRP1-mediated folate removal from EVTs, thereby interfering with EVTs' role in early placental vascular remodeling. HTR-8/SVneo and Swan-71 cells, first trimester human EVTs, were grown in the absence or presence of 0.5 mM and 0.7 mM palmitic acid, respectively, for 72 h. Palmitic acid increased ABCC1 gene expression and MRP1 protein expression in both cell lines. The rate of folate efflux from the cells into the media increased with a decrease in migration and invasion functions in the cultured cells. Treatment with N-acetylcysteine (NAC) prevented the palmitic acid-mediated upregulation of MRP1 and restored invasion and migration in the EVTs. Finally, in an ABCC1 knockout subline of Swan-71 cells, there was a significant increase in invasion and migration functions. The novel finding in this study that palmitic acid increases MRP1-mediated folate efflux provides a missing link that helps to explain how maternal consumption of saturated fatty acids compromises the in utero environment.
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Affiliation(s)
- Yunali Ashar
- Department of Pharmaceutical Sciences, St. John’s University, Queens, NY 11439, USA
| | - Qiuxu Teng
- Department of Pharmaceutical Sciences, St. John’s University, Queens, NY 11439, USA
| | - John N. D. Wurpel
- Department of Pharmaceutical Sciences, St. John’s University, Queens, NY 11439, USA
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, St. John’s University, Queens, NY 11439, USA
| | - Sandra E. Reznik
- Department of Pharmaceutical Sciences, St. John’s University, Queens, NY 11439, USA
- Departments of Pathology and Obstetrics and Gynecology and Women’s Health, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Li F, Mao C, Yeh S, Xin J, Wang P, Shi Q, Ming X. Combinatory therapy of MRP1-targeted photoimmunotherapy and liposomal doxorubicin promotes the antitumor effect for chemoresistant small cell lung cancer. Int J Pharm 2022; 625:122076. [PMID: 35931394 DOI: 10.1016/j.ijpharm.2022.122076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/24/2022] [Accepted: 07/31/2022] [Indexed: 11/20/2022]
Abstract
Small cell lung cancer (SCLC), considered a mortal recalcitrant cancer, is a severe healthcare issue because of its poor prognosis, early metastasis, drug resistance and limited clinical treatment options. In our previous study, we established a MRP1-targeted antibody-IR700 system (Mab-IR700) for near infrared photoimmunotherapy (NIR-PIT) which exhibited a promising therapeutic effect on drug resistant H69AR cells both in vitro and in vivo, though the tumor growth suppression effect did not last long with a single round of PIT treatment. To achieve a better anticancer effect, we have combined Mab-IR700-mediated NIR-PIT with liposomal doxorubicin (Doxil®) and investigated the in vitro and in vivo cytotoxicity by using a H69AR/3T3 cell co-culture model in which 3T3 cells were used to mimic stromal cells. Cytotoxicity experiments demonstrated the specificity of Mab-IR700 to H69AR cells, while cytotoxicity and flow cytometry experiments confirmed that H69AR cells were doxorubicin-resistant. Compared with Mab-IR700-mediated PIT or Doxil-mediated chemotherapy, the combination therapy exhibited the best cell killing effect in vitro and superior tumor growth inhibition and survival prolongation effect in vivo. Super enhanced permeability and retention (SUPR) effect was observed in both co-culture spheroids and tumor-bearing mice. Owing to an approximately 9-fold greater accumulation of Doxil within the tumors, NIR-PIT combined with Doxil resulted in enhanced antitumor effects compared to NIR-PIT alone. This photoimmunochemotherapy is a practical strategy for the treatment of chemoresistant SCLC and should be further investigated for clinical translation.
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Affiliation(s)
- Fang Li
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China; Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem 27157, USA.
| | - Chengqiong Mao
- Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem 27157, USA
| | - Stacy Yeh
- Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem 27157, USA
| | - Junbo Xin
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Peng Wang
- School of Pharmaceutical Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Qin Shi
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Xin Ming
- Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem 27157, USA.
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Liu Y, Wang X, Si B, Wang T, Wu Y, Liu Y, Zhou Y, Tong H, Zheng X, Xu A. Zinc oxide/graphene oxide nanocomposites efficiently inhibited cadmium-induced hepatotoxicity via releasing Zn ions and up-regulating MRP1 expression. Environ Int 2022; 165:107327. [PMID: 35667343 DOI: 10.1016/j.envint.2022.107327] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Environmental cadmium (Cd) pollution has been verified to associated with various hepatic diseases, as Cd has been classified as one of the TOP 20 Hazardous Substances and liver is the main target of Cd poisoning. However, to design efficient hepatic antidotes with excellent detoxification capacity and reveal their underlying mechanism(s) are still challenges in Cd detoxification. Herein, ZnO/GO nanocomposites with favorable biocompatibility was uncovered their advanced function against Cd-elicited liver damage at the in situ level in vivo by 9.4 T magnetic resonance imaging (MRI). To explore the cellular detoxification mechanism, ZnO/GO nanocomposites was found to effectively inhibit the cyto- and geno-toxicity of Cd with the maximum antagonistic efficiency to be approximately 90%. Mechanistically, ZnO/GO nanocomposites competitively inhibited the cellular Cd uptake through releasing Zn ions, and significantly promoted Cd excretion via targeting the efflux pump of multidrug resistance associated protein1 (MRP1), which was confirmed by mass spectra and immunohistochemical analysis in kidney, a main excretion organ of Cd. Our data provided a novel approach against Cd-elicited hepatotoxic responses by constructed ZnO/GO nanocomposites both in vitro and in vivo, which may have promising application in prevention and detoxification for Cd poisoning.
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Affiliation(s)
- Yun Liu
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Xue Wang
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Bo Si
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Tong Wang
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Yun Wu
- Anhui Province Key Laboratory of High Field Magnetic Resonance Imaging; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Ying Liu
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Yemian Zhou
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Haiyang Tong
- Anhui Province Key Laboratory of High Field Magnetic Resonance Imaging; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China
| | - Xinwei Zheng
- Anhui Province Key Laboratory of High Field Magnetic Resonance Imaging; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China.
| | - An Xu
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology; High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Science, Hefei 230031, PR China; Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, PR China.
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20
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Yu S, Wang Y, Shen F, Fang H, Yu Y. Copper-based fungicide copper hydroxide accelerates the evolution of antibiotic resistance via gene mutations in Escherichia coli. Sci Total Environ 2022; 815:152885. [PMID: 34998765 DOI: 10.1016/j.scitotenv.2021.152885] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/26/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
The extensive use of copper-based fungicides in orchards, especially in vineyards, leads to the accumulation of copper, which has caused growing concern. However, data on the acquisition of antibiotic resistance in opportunistic pathogens under copper-based fungicides are scarce. In this study, we investigated the potential development of antibiotic resistance in Escherichia coli K12 under selective copper hydroxide pressure. The results indicated that copper hydroxide at concentrations of 100 mg/L and 200 mg/L evolved resistance against chloramphenicol and tolerance against tetracycline to 4-8 and 2.00-2.67 times than the initial minimal inhibitory concentrations (MICs), respectively. Whole-genome sequencing analysis showed that the obtained resistant strains carried gene mutations including AcrAB-TolC multidrug efflux pump (acrB and marR), outer membrane porin (evZ), and another indirect pathways. Furthermore, the expression of multidrug efflux pump genes and oxidative stress-related genes were significantly upregulated, whereas outer membrane porin genes were downregulated. Thus, our results could well explain the emergence of antibiotic resistance and resistance mechanisms selected by copper-based fungicide, and provide a basis for the management of copper-based fungicide in agriculture to avoid the spread of antibiotic resistance.
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Affiliation(s)
- Sumei Yu
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yingnan Wang
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Fan Shen
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, the Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, Hangzhou 310058, China.
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21
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Ohya S, Kajikuri J, Endo K, Kito H, Matsui M. K Ca1.1 K + Channel Inhibition Overcomes Resistance to Antiandrogens and Doxorubicin in a Human Prostate Cancer LNCaP Spheroid Model. Int J Mol Sci 2021; 22:13553. [PMID: 34948357 PMCID: PMC8706449 DOI: 10.3390/ijms222413553] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/13/2021] [Indexed: 12/21/2022] Open
Abstract
Several types of K+ channels play crucial roles in tumorigenicity, stemness, invasiveness, and drug resistance in cancer. Spheroid formation of human prostate cancer (PC) LNCaP cells with ultra-low attachment surface cultureware induced the up-regulation of cancer stem cell markers, such as NANOG, and decreased the protein degradation of the Ca2+-activated K+ channel KCa1.1 by down-regulating the E3 ubiquitin ligase, FBXW7, compared with LNCaP monolayers. Accordingly, KCa1.1 activator-induced hyperpolarizing responses were larger in isolated cells from LNCaP spheroids. The pharmacological inhibition of KCa1.1 overcame the resistance of LNCaP spheroids to antiandrogens and doxorubicin (DOX). The protein expression of androgen receptors (AR) was significantly decreased by LNCaP spheroid formation and reversed by KCa1.1 inhibition. The pharmacological and genetic inhibition of MDM2, which may be related to AR protein degradation in PC stem cells, revealed that MDM2 was responsible for the acquisition of antiandrogen resistance in LNCaP spheroids, which was overcome by KCa1.1 inhibition. Furthermore, a member of the multidrug resistance-associated protein subfamily of ABC transporters, MRP5 was responsible for the acquisition of DOX resistance in LNCaP spheroids, which was also overcome by KCa1.1 inhibition. Collectively, the present results suggest the potential of KCa1.1 in LNCaP spheroids, which mimic PC stem cells, as a therapeutic target for overcoming antiandrogen- and DOX-resistance in PC cells.
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Affiliation(s)
- Susumu Ohya
- Department of Pharmacology, Graduate School of Medical Sciences, Nagoya City University, Nagoya 467-8601, Japan; (J.K.); (K.E.); (H.K.); (M.M.)
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22
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Hanssen KM, Haber M, Fletcher JI. Targeting multidrug resistance-associated protein 1 (MRP1)-expressing cancers: Beyond pharmacological inhibition. Drug Resist Updat 2021; 59:100795. [PMID: 34983733 DOI: 10.1016/j.drup.2021.100795] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/30/2021] [Accepted: 09/05/2021] [Indexed: 12/30/2022]
Abstract
Resistance to chemotherapy remains one of the most significant obstacles to successful cancer treatment. While inhibiting drug efflux mediated by ATP-binding cassette (ABC) transporters is a seemingly attractive and logical approach to combat multidrug resistance (MDR), small molecule inhibition of ABC transporters has so far failed to confer clinical benefit, despite considerable efforts by medicinal chemists, biologists, and clinicians. The long-sought treatment to eradicate cancers displaying ABC transporter overexpression may therefore lie within alternative targeting strategies. When aberrantly expressed, the ABC transporter multidrug resistance-associated protein 1 (MRP1, ABCC1) confers MDR, but can also shift cellular redox balance, leaving the cell vulnerable to select agents. Here, we explore the physiological roles of MRP1, the rational for targeting this transporter in cancer, the development of small molecule MRP1 inhibitors, and the most recent developments in alternative therapeutic approaches for targeting cancers with MRP1 overexpression. We discuss approaches that extend beyond simple MRP1 inhibition by exploiting the collateral sensitivity to glutathione depletion and ferroptosis, the rationale for targeting the shared transcriptional regulators of both MRP1 and glutathione biosynthesis, advances in gene silencing, and new molecules that modulate transporter activity to the detriment of the cancer cell. These strategies illustrate promising new approaches to address multidrug resistant disease that extend beyond the simple reversal of MDR and offer exciting routes for further research.
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Affiliation(s)
- Kimberley M Hanssen
- Children's Cancer Institute Australia, Lowy Cancer Research Centre, UNSW Sydney, Sydney, NSW, Australia; School of Women's and Children's Health, UNSW Sydney, Sydney, NSW, Australia
| | - Michelle Haber
- Children's Cancer Institute Australia, Lowy Cancer Research Centre, UNSW Sydney, Sydney, NSW, Australia; School of Women's and Children's Health, UNSW Sydney, Sydney, NSW, Australia
| | - Jamie I Fletcher
- Children's Cancer Institute Australia, Lowy Cancer Research Centre, UNSW Sydney, Sydney, NSW, Australia; School of Women's and Children's Health, UNSW Sydney, Sydney, NSW, Australia.
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23
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Khare T, Mahalunkar S, Shriram V, Gosavi S, Kumar V. Embelin-loaded chitosan gold nanoparticles interact synergistically with ciprofloxacin by inhibiting efflux pumps in multidrug-resistant Pseudomonas aeruginosa and Escherichia coli. Environ Res 2021; 199:111321. [PMID: 33989619 DOI: 10.1016/j.envres.2021.111321] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/30/2021] [Accepted: 05/08/2021] [Indexed: 05/20/2023]
Abstract
A global upsurge in emergence and spread of antibiotic resistance (ABR) in bacterial populations is a serious threat for human health. Unfortunately, ABR is no longer confined to nosocomial environments and is frequently reported from community microbes as well. The ABR is resulting in shrinking potent antibiotics pool and thus necessitating novel and alternative therapies and therapeutics. Current investigation was aimed to assess the synergistic potential of a synthesized, phytomolecule-loaded, polysaccharide-stabilized metallic nanoparticles (NPs) against Pseudomonas aeruginosa (PA) and Escherichia coli (EC) isolated from river waters. ABR profiling of these strains characterized them as multidrug resistant (MDR). Synthesized embelin (Emb, isolated from Embelia tsjeriam-cottam)-loaded, chitosan-gold (Emb-Chi-Au) NPs were assessed for their potential synergistic activity with ciprofloxacin (CIP) via checker-board assay and time-kill curve analysis. The NPs reduced the minimal inhibitory concentration (MIC) of CIP by 16- and 4-fold against MDR PA (PA-r) and EC (EC-r) strains, respectively. Fractional inhibitory concentration (FIC) indices with ≤0.5 values confirmed the synergy between the Emb-Chi-Au NPs and CIP, which was further confirmed at ½ MICs in both PA-r and EC-r via time-kill curve analysis. In order to decipher the mode of action, efflux pump inhibitory effects of Emb-Chi-Au NPs were evaluated in terms of the increase in the EtBr mediated fluorescence in control versus NP-treated MDR strains. Molecular docking based in silico simulations were used to predict the interactions between Emb and the active sites of the efflux pump related proteins in PA-r (MexA, MexB and OprM) and EC-r (AcrA, AcrB and TolC), which revealed the probable bond formation between Emb and respective amino acid residues.
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Affiliation(s)
- Tushar Khare
- Department of Biotechnology, Modern College of Arts, Science and Commerce (Savitribai Phule Pune University), Ganeshkhind, Pune, 411016, India; Department of Environmental Science, Savitribai Phule Pune University, Pune, 411007, India
| | - Sneha Mahalunkar
- School of Basic Medical Science, Savitribai Phule Pune University, Pune, 411007, India
| | - Varsha Shriram
- Department of Botany, Prof. Ramkrishna More Arts, Commerce and Science College (Savitribai Phule Pune University), Pune, 411044, India
| | - Suresh Gosavi
- School of Basic Medical Science, Savitribai Phule Pune University, Pune, 411007, India; Department of Physics, Savitribai Phule Pune University, Pune, 411007, India.
| | - Vinay Kumar
- Department of Biotechnology, Modern College of Arts, Science and Commerce (Savitribai Phule Pune University), Ganeshkhind, Pune, 411016, India; Department of Environmental Science, Savitribai Phule Pune University, Pune, 411007, India.
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Leal ALAB, Bezerra CF, Confortin C, da Silva LE, Marinho EM, Marinho MM, Vasconcelos MA, da Silva TG, Marinho ES, Teixeira AMR, Coutinho HDM, Barreto HM, Dos Santos HS. Chemical composition and potentiating action of Norfloxacin mediated by the essential oil of Piper caldense C.D.C. against Staphylococcus aureus strains overexpressing efflux pump genes. Arch Microbiol 2021; 203:4727-4736. [PMID: 34052872 PMCID: PMC8164493 DOI: 10.1007/s00203-021-02393-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 02/08/2023]
Abstract
Infectious diseases caused by multidrug-resistant microorganisms has increased in the last years. Piper species have been reported as a natural source of phytochemicals that can help in combating fungal and bacterial infections. This study had as objectives characterize the chemical composition of the essential oil from Piper caldense (EOPC), evaluate its potential antimicrobial activity, and investigate the synergistic effect with Norfloxacin against multidrug-resistant S. aureus overproducing efflux pumps, as well as, verify the EOPC ability to inhibit the Candida albicans filamentation. EOPC was extracted by hydrodistillation, and the chemical constituents were identified by gas chromatography, allowing the identification of 24 compounds (91.9%) classified as hydrocarbon sesquiterpenes (49.6%) and oxygenated sesquiterpenes (39.5%). Antimicrobial tests were performed using a 96-well plate microdilution method against C. albicans ATCC 10231, Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 25923 standard strains, as well as against multidrug-resistant strains S. aureus SA1199B (overexpressing norA gene), S. aureus K2068 (overexpressing mepA gene) and S. aureus K4100 (overexpressing qacC gene). The oil showed activity against C. albicans ATCC 10231 (≥ 512 µg/mL) and was able to inhibit hyphae formation, an important mechanism of virulence of C. albicans. On the other hand, EOPC was inactive against all bacterial strains tested (≤ 1,024 µg mL). However, when combined with Norfloxacin at subinhibitory concentration EOPC reduced the Norfloxacin and Ethidium bromide MIC values against S. aureus strains SA1199B, K2068 and K4100. These results indicate that EOPC is a source of phytochemicals acting as NorA, MepA and QacC inhibitors.
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Affiliation(s)
- Antonio Linkoln Alves Borges Leal
- Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
- Department of Microbiology and Parasitolog, Federal University of Piaui, Teresina, PI, Brazil
| | - Camila Fonseca Bezerra
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - Camila Confortin
- Postgraduate Programme in Sustainable Territorial, Federal University of Paraná, Curitiba, PR, Brazil
| | - Luiz Everson da Silva
- Postgraduate Programme in Sustainable Territorial, Federal University of Paraná, Curitiba, PR, Brazil
| | - Emanuelle Machado Marinho
- Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Márcia Machado Marinho
- Faculty of Education, Science and Letters of Iguatu, State University of Ceará, Iguatu, CE, Brazil
| | | | - Terezinha Gonçalves da Silva
- Department of Antibiotics, Drug Planning and Synthesis Laboratory-LPSF, Federal University of Pernambuco, Cidade Universitária, Recife, PE, Brazil
| | - Emmanuel Silva Marinho
- Group of Theoretical Chemistry and Electrochemistry, State University of Ceará, Campus FAFIDAM, Limoeiro do Norte, Fortaleza, CE, Brazil
| | | | | | | | - Hélcio Silva Dos Santos
- Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil.
- Center for Exact Sciences and Technology, Vale do Acarau State University, Sobral, CE, Brazil.
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Windle ST, Lane KD, Gadalla NB, Liu A, Mu J, Caleon RL, Rahman RS, Sá JM, Wellems TE. Evidence for linkage of pfmdr1, pfcrt, and pfk13 polymorphisms to lumefantrine and mefloquine susceptibilities in a Plasmodium falciparum cross. Int J Parasitol Drugs Drug Resist 2020; 14:208-217. [PMID: 33197753 PMCID: PMC7677662 DOI: 10.1016/j.ijpddr.2020.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Lumefantrine and mefloquine are used worldwide in artemisinin-based combination therapy (ACT) of malaria. Better understanding of drug susceptibility and resistance is needed and can be obtained from studies of genetic crosses. METHODS Drug response phenotypes of a cross between Plasmodium falciparum lines 803 (Cambodia) and GB4 (Ghana) were obtained as half-maximal effective concentrations (EC50s) and days to recovery (DTR) after 24 h exposure to 500 nM lumefantrine. EC50s of mefloquine, halofantrine, chloroquine, and dihydroartemisinin were also determined. Quantitative trait loci (QTL) analysis and statistical tests with candidate genes were used to identify polymorphisms associated with response phenotypes. RESULTS Lumefantrine EC50s averaged 5.8-fold higher for the 803 than GB4 parent, and DTR results were 3-5 and 16-18 days, respectively. In 803 × GB4 progeny, outcomes of these two lumefantrine assays showed strong inverse correlation; these phenotypes also correlated strongly with mefloquine and halofantrine EC50s. By QTL analysis, lumefantrine and mefloquine phenotypes mapped to a chromosome 5 region containing codon polymorphisms N86Y and Y184F in the P. falciparum multidrug resistance 1 protein (PfMDR1). Statistical tests of candidate genes identified correlations between inheritance of PfK13 Kelch protein polymorphism C580Y (and possibly K189T) and lumefantrine and mefloquine susceptibilities. Correlations were detected between lumefantrine and chloroquine EC50s and polymorphisms N326S and I356T in the CVIET-type P. falciparum chloroquine resistance transporter (PfCRT) common to 803 and GB4. CONCLUSIONS Correlations in this study suggest common mechanisms of action in lumefantrine, mefloquine, and halofantrine responses. PfK13 as well as PfMDR1 and PfCRT polymorphisms may affect access and/or action of these arylaminoalcohol drugs at locations of hemoglobin digestion and heme metabolism. In endemic regions, pressure from use of lumefantrine or mefloquine in ACTs may drive selection of PfK13 polymorphisms along with versions of PfMDR1 and PfCRT associated with lower susceptibility to these drugs.
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Affiliation(s)
- Sean T Windle
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Kristin D Lane
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Nahla B Gadalla
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Anna Liu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Ramoncito L Caleon
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Rifat S Rahman
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Juliana M Sá
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA
| | - Thomas E Wellems
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20892, USA.
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Sundaramoorthy NS, Sivasubramanian A, Nagarajan S. Simultaneous inhibition of MarR by salicylate and efflux pumps by curcumin sensitizes colistin resistant clinical isolates of Enterobacteriaceae. Microb Pathog 2020; 148:104445. [PMID: 32814143 DOI: 10.1016/j.micpath.2020.104445] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 01/12/2023]
Abstract
Carbapenem resistant Enterobacteriaceae (CRE) infection has been widely treated with last resort antibiotics like colistin. Resistance to colistin has further jeopardized the situation. We have previously reported a combination of MarR inhibitor - salicylate (Sal) and an efflux pump inhibitor (BC1) that successfully restored colistin (Col) sensitivity in multidrug and colistin resistant clinical isolate of E. coli U3790. Since synthetic compounds usually fail during drug development initiatives, we attempted to replace synthetic efflux pump inhibitor (BC1) with plant metabolite as efflux pump inhibitor to restore colistin sensitivity in CRE. Screening 13 plant metabolites, we narrowed on curcumin (CUR) to effectively inhibit efflux in both colistin resistant E. coli U3790 and K. pneumoniae BC936. Combination of Col + CUR showed a remarkable reversal in colistin MIC by 128 fold and 32 fold in E. coli U3790 and K. pneumoniae BC936 respectively. Studies with knock out mutant strains of AcrAB-TolC pump components show that curcumin's efflux inhibition is partly mediated by acrB. Thus, curcumin reduced colistin MIC well below the CLSI breakpoint (<2 μg/ml). Curcumin also exhibited synergy with colistin against most of the clinical isolates of Enterobacteriaceae tested. Efficiency of Col + Sal + CUR was evident in time kill curve analysis, which displayed a 6 log and a 4 log decline in CFU/ml by 24 h in U3790 and BC936 strains respectively. In vivo intramuscular fish infection studies showed that the triad combination reduced the bacterial bioburden of E. coli U3790 by 2.6 log and that of K. pneumoniae BC936 by 1.6 log. Hence, our study shows the efficacy of inhibiting MarR by salicylate and inhibiting efflux pump with curcumin restores colistin sensitivity in colistin resistant Enterobacteriaceae in vitro and in vivo.
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Affiliation(s)
- Niranjana Sri Sundaramoorthy
- Center for Research on Infectious Diseases, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamil Nadu, India
| | - Arvind Sivasubramanian
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamil Nadu, India
| | - Saisubramanian Nagarajan
- Center for Research on Infectious Diseases, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamil Nadu, India.
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Yang Y, Ji N, Cai C, Wang J, Lei Z, Teng Q, Wu Z, Cui Q, Pan Y, Chen Z. Modulating the function of ABCB1: in vitro and in vivo characterization of sitravatinib, a tyrosine kinase inhibitor. Cancer Commun (Lond) 2020; 40:285-300. [PMID: 32525624 PMCID: PMC7365458 DOI: 10.1002/cac2.12040] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/26/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Overexpression of ATP-binding cassette (ABC) transporter is a major contributor to multidrug resistance (MDR), in which cancer cells acquire resistance to a wide spectrum of chemotherapeutic drugs. In this work, we evaluated the sensitizing effect of sitravatinib, a broad-spectrum tyrosine kinase inhibitor (TKI), on ATP-binding cassette subfamily B member 1 (ABCB1)- and ATP-binding cassette subfamily C member 10 (ABCC10)-mediated MDR. METHODS MTT assay was conducted to examine cytotoxicity and evaluate the sensitizing effect of sitravatinib at non-toxic concentrations. Tritium-labeled paclitaxel transportation, Western blotting, immunofluorescence analysis, and ATPase assay were carried out to elucidate the mechanism of sitravatinib-induced chemosensitization. The in vitro findings were translated into preclinical evaluation with the establishment of xenograft models. RESULTS Sitravatinib considerably reversed MDR mediated by ABCB1 and partially antagonized ABCC10-mediated MDR. Our in silico docking simulation analysis indicated that sitravatinib strongly and stably bound to the transmembrane domain of ABCB1 human-mouse chimeric model. Furthermore, sitravatinib inhibited hydrolysis of ATP and synchronously decreased the efflux function of ABCB1. Thus, sitravatinib could considerably enhance the intracellular concentration of anticancer drugs. Interestingly, no significant alterations of both expression level and localization of ABCB1 were observed. More importantly, sitravatinib could remarkably restore the antitumor activity of vincristine in ABCB1-mediated xenograft model without observable toxic effect. CONCLUSIONS The findings in this study suggest that the combination of sitrvatinib and substrate antineoplastic drugs of ABCB1 could attenuate the MDR mediated by the overexpression of ABCB1.
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Affiliation(s)
- Yuqi Yang
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Ning Ji
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
- State Key Laboratory of Experimental HematologyChinese Academy of Medical Science and Peking Union Medical CollegeInstitute of Hematology and Blood Diseases HospitalTianjin300020P. R. China
| | - Chao‐Yun Cai
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Jing‐Quan Wang
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Zi‐Ning Lei
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Qiu‐Xu Teng
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Zhuo‐Xun Wu
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
| | - Qingbin Cui
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
- School of Public HealthGuangzhou Medical UniversityGuangzhouGuangdong511436P. R. China
| | - Yihang Pan
- Tomas Lindahl Nobel Laureate Laboratorythe Seventh Affiliated Hospital of Sun Yat‐sen UniversityShenzhenGuangdong518107P. R. China
| | - Zhe‐Sheng Chen
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesSt. John's UniversityQueensNew York11439USA
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Xu J, Wang Z, Wang Y, Ma H, Zhu H, Liu J, Zhou Y, Deng X, Zhou X. ABCC2 participates in the resistance of Plutella xylostella to chemical insecticides. Pestic Biochem Physiol 2020; 162:52-59. [PMID: 31836054 DOI: 10.1016/j.pestbp.2019.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/02/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
The ABCC2 protein of Plutella xylostella is an important target of Cry1A toxins from Bacillus thuringiensis (Bt), but whether this protein is involved in the resistance of P. xylostella to other insecticides remains unclear. In this study, the abcc2 gene of P. xylostella was cloned and the expression levels of Pxabcc2 in susceptible and resistant strains were investigated. ABCC2 was found to be expressed 3.2-6.7-fold higher in the resistant strain than in the susceptible strain; in the surviving P. xylostella, ABCC2 levels were significantly higher when treated with indoxacarb, avermectin, and beta-cypermethrin. We constructed a stable ABCC2-expressing HEK-293 cell line to reveal the contribution of ABCC2 to insecticide resistance. The avermectin and chlorfenapyr sensitivities of the stably-transfected cell line were significantly lower than those of the control cells. The intracellular avermectin concentration was significantly lower in the stably-transfected cell line than in the control cells after four hours of exposure. This study shows that up-regulated ABCC2 expression is related to insecticide resistance in P. xylostella. Moreover, we used RNA interference technology to reduce ABCC2 levels in P. xylostella. Down-regulating ABCC2 expression did not significantly affect avermectin or chlorfenapyr resistance in P. xylostella. We speculate that increased ABCC2 expression can enhance metabolic resistance in P. xylostella. This study also provides new insights into cross-resistance between B. thuringiensis toxins and chemical insecticides.
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Affiliation(s)
- Jie Xu
- College of Plant Protection, Graduate School of Hunan Agricultural University, Changsha 410128, China
| | - Zanyong Wang
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Yafei Wang
- College of Plant Protection, Graduate School of Hunan Agricultural University, Changsha 410128, China
| | - Haihao Ma
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China.
| | - Hang Zhu
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Jia Liu
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Yong Zhou
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Xile Deng
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Xiaomao Zhou
- Hunan Province Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; College of Plant Protection, Graduate School of Hunan Agricultural University, Changsha 410128, China.
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Luo B, Li W, Wang R, Lu H, Yang T, Jia Z. [Effect of hypoxia on expression of multidrug resistance protein 2 and its regulation mechanism]. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2017; 42:98-107. [PMID: 28216505 DOI: 10.11817/j.issn.1672-7347.2017.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Drug efflux transporters plays a key role in pharmacokinetics parameters changes. In recent years, in addition to P-glycoprotein (P-gp), breast cancer resistance protein (BCRP), MRP2 has become an advanced research hotspot. Several signaling pathways andtranscription factors have been reported to be involved in regulation of MRP2 expression in hypoxic microenvironment of tumor, such as peroxisome proliferators-activated receptors (PPARα), nuclear factor κB (NF-κB), pregnane X receptor (PXR), farnesoid X receptor (FXR), constitutive androstane receptor (CAR) and microRNA. But it is not fully understood how MRP2 is regulated under hypoxia. MRP2 is one of the most important efflux transporter proteins. Many drugs or inhibitors have been shown to be its substrate. In the hypoxic environment, changes in expression of MRP2 can significantly affect drug's pharmacokinetics (absorption, distribution, metabolism, excretion). Simultaneously, the regulation of MRP2 expression under hypoxic might involve several signal pathways and many genes, which constitute an integral gene regulatory networks.
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Affiliation(s)
- Bingfeng Luo
- School of Pharmacy, Lanzhou University, Lanzhou 730000;. PLA Key Laboratory of the Plateau of the
Environmental Damage Control, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - Wenbin Li
- PLA Key Laboratory of the Plateau of the
Environmental Damage Control, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - Rong Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000;. PLA Key Laboratory of the Plateau of the
Environmental Damage Control, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - Hui Lu
- PLA Key Laboratory of the Plateau of the
Environmental Damage Control, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - Tao Yang
- Department of Pharmacy, Gansu Provincial Maternity and Child Care Hospital, Lanzhou 730050, China
| | - Zhengping Jia
- School of Pharmacy, Lanzhou University, Lanzhou 730000;. PLA Key Laboratory of the Plateau of the
Environmental Damage Control, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
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Jia XS, Zhou SM, Xu MX, Yang Y, Wu K. [Mutations of Plasmodium falciparum Multidrug Resistance 1 Gene in Imported Plasmodium falciparum in Wuhan]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2016; 34:489-492. [PMID: 30141588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To identify Plasmodium falciparum multidrug resistance 1(Pfmdr1) point mutations in imported Plasmodium falciparum in Wuhan. METHODS Blood samples were collected from returnees infected with P. falciparum in endemic areas of Africa and Myanmar during 2010-2015 in Wuhan City. Nested PCR primers were specifically designed for Pfmdr1 gene loci 86, 1042 and 1246 of P. falciparum. The Pfmdr1 gene was then amplified by nested PCR, and the products were digested by restriction enzyme ApoⅠ, AseⅠ and EcoRⅤ, respectively. The mutation rate for loci 86, 1042 and 1246 was analyzed. Results A total of 187 patients with falciparum malaria were involved in the study. Pfmdr1 was amplified from all the blood samples. Restriction enzyme digestion revealed mutation rate of 19.3%(36/187), 4.3% (8/187) and 9.6%(18/187) for loci 86, 1042 and 1246, respectively. In detail, the mutation rate for loci 86, 1042 and 1246 was 20.6%(36/175), 2.9%(5/175) and 10.3%(18/175) respectively in the 175 samples from Africa, and only 3 cases with locus 1042 mutation were found in the 12 samples from Myanmar. RESULTS A total of 187 patients with falciparum malaria were involved in the study. Pfmdr1 was amplified from all the blood samples. Restriction enzyme digestion revealed mutation rate of 19.3%(36/187), 4.3% (8/187) and 9.6%(18/187) for loci 86, 1042 and 1246, respectively. In detail, the mutation rate for loci 86, 1042 and 1246 was 20.6%(36/175), 2.9%(5/175) and 10.3%(18/175) respectively in the 175 samples from Africa, and only 3 cases with locus 1042 mutation were found in the 12 samples from Myanmar. CONCLUSION The loci 86, 1042 and 1246 mutations of Pfmdr1 have all been found in the samples from Africa, with only one point mutation (locus 1042) found in samples from Myanmar.
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Pei K, Zhu JJ, Wang CE, Xie QL, Guo JY. MicroRNA-185-5p modulates chemosensitivity of human non-small cell lung cancer to cisplatin via targeting ABCC1. Eur Rev Med Pharmacol Sci 2016; 20:4697-4704. [PMID: 27906433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE MicroRNA-185-5p (miR-185-5p) dysregulation is found in various human cancers. Our purpose is to investigate the association of miR-185-5p expression with the sensitivity of non-small cell lung cancer (NSCLC) to cisplatin. MATERIALS AND METHODS Real-time PCR or Western blot assay was performed to detect the expression of mature miR-185-5p and ATP-binding cassette, subfamily C, member 1 (ABCC1) protein. Cell lines with abnormal expression of miR-185-5p were generated using miR-185-5p inhibitor and mimics. The viabilities of treated cells were analyzed using MTT assay. Cell apoptosis was evaluated by TUNEL assay. Apoptosis-related protein expressions were tested by Western blot. Dual-luciferase assay was applied to assess the target gene of miRNA. RESULTS The expression level of miR-185-5p in A549 cell line was significantly higher than that in A549/DDP cell line (p < 0.05). Transfection of miR-185-5p mimics increased the sensitivity of A549 cells to cisplatin and the expression of an apoptosis-related factor, and restrained cell proliferation. MiR-185-5p inhibitor promoted cisplatin resistance and cell growth in A549 cells, and declined apoptosis-related factor levels. ABCC1 was verified as the target gene of miR-185-5p. MiR-185-5p exhibited negative correlation with ABCC1 in A549/DDP cells. CONCLUSIONS The results of the present study demonstrated that inhibition of miR-185-5p was involved in chemo-resistance of NSCLC cells to cisplatin via down-regulating ABCC1.
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Affiliation(s)
- K Pei
- Department of Pharmacy, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Techology, Luoyang, China.
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Marton J, Albert D, Wiltshire SA, Park R, Bergen A, Qureshi S, Malo D, Burelle Y, Vidal SM. Cyclosporine A Treatment Inhibits Abcc6-Dependent Cardiac Necrosis and Calcification following Coxsackievirus B3 Infection in Mice. PLoS One 2015; 10:e0138222. [PMID: 26375467 PMCID: PMC4574283 DOI: 10.1371/journal.pone.0138222] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 08/26/2015] [Indexed: 11/18/2022] Open
Abstract
Coxsackievirus type B3 (CVB3) is a cardiotropic enterovirus. Infection causes cardiomyocyte necrosis and myocardial inflammation. The damaged tissue that results is replaced with fibrotic or calcified tissue, which can lead to permanently altered cardiac function. The extent of pathogenesis among individuals exposed to CVB3 is dictated by a combination of host genetics, viral virulence, and the environment. Here, we aimed to identify genes that modulate cardiopathology following CVB3 infection. 129S1 mice infected with CVB3 developed increased cardiac pathology compared to 129X1 substrain mice despite no difference in viral burden. Linkage analysis identified a major locus on chromosome 7 (LOD: 8.307, P<0.0001) that controlled the severity of cardiac calcification and necrosis following infection. Sub-phenotyping and genetic complementation assays identified Abcc6 as the underlying gene. Microarray expression profiling identified genotype-dependent regulation of genes associated with mitochondria. Electron microscopy examination showed elevated deposition of hydroxyapatite-like material in the mitochondrial matrices of infected Abcc6 knockout (Abcc6-/-) mice but not in wildtype littermates. Cyclosporine A (CsA) inhibits mitochondrial permeability transition pore opening by inhibiting cyclophilin D (CypD). Treatment of Abcc6 -/- mice with CsA reduced cardiac necrosis and calcification by more than half. Furthermore, CsA had no effect on the CVB3-induced phenotype of doubly deficient CypD-/-Abcc6-/- mice. Altogether, our work demonstrates that mutations in Abcc6 render mice more susceptible to cardiac calcification following CVB3 infection. Moreover, we implicate CypD in the control of cardiac necrosis and calcification in Abcc6-deficient mice, whereby CypD inhibition is required for cardioprotection.
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Affiliation(s)
- Jennifer Marton
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
| | - Danica Albert
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
| | - Sean A. Wiltshire
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
| | - Robin Park
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
| | - Arthur Bergen
- Department of Ophthalmogenetics, The Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Salman Qureshi
- The Center for Host Resistance and the Division of Experimental Medicine, McGill University, Montreal, Canada
| | - Danielle Malo
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
| | - Yan Burelle
- Faculty of Pharmacy, University of Montreal, Montreal, Canada
| | - Silvia M. Vidal
- Department of Human Genetics and Complex Traits Group, McGill University, Montreal, Canada
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Li Q, Guo H, Chou DW, Berndt A, Sundberg JP, Uitto J. Mouse models for pseudoxanthoma elasticum: genetic and dietary modulation of the ectopic mineralization phenotypes. PLoS One 2014; 9:e89268. [PMID: 24586646 PMCID: PMC3929712 DOI: 10.1371/journal.pone.0089268] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 01/17/2014] [Indexed: 11/25/2022] Open
Abstract
Pseudoxanthoma elasticum (PXE), a heritable ectopic mineralization disorder, is caused by mutations in the ABCC6 gene. Null mice (Abcc6−/−) recapitulate the genetic, histopathologic and ultrastructural features of PXE, and they demonstrate early and progressive mineralization of vibrissae dermal sheath, which serves as a biomarker of the overall mineralization process. Recently, as part of a mouse aging study at The Jackson Laboratory, 31 inbred mouse strains were necropsied, and two of them, KK/HlJ and 129S1/SvImJ, were noted to have vibrissae dermal mineralization similar to Abcc6−/− mice. These two strains were shown to harbor a single nucleotide polymorphism (rs32756904) in the Abcc6 gene, which resulted in out-of-frame splicing and marked reduction in ABCC6 protein expression in the liver of these mice. The same polymorphism is present in two additional mouse strains, DBA/2J and C3H/HeJ, with similar reduction in Abcc6 protein levels, yet these mice did not demonstrate tissue mineralization when kept on standard rodent diet. However, all four mouse strains, when placed on experimental diet enriched in phosphate and low in magnesium, developed extensive ectopic mineralization. These results indicate that the genetic background of mice and the mineral composition of their diet can profoundly modulate the ectopic mineralization process predicated on mutations in the Abcc6 gene. These mice provide novel model systems to study the pathomechanisms and the reasons for strain background on phenotypic variability of PXE.
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Affiliation(s)
- Qiaoli Li
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Haitao Guo
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - David W. Chou
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
| | - Annerose Berndt
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - John P. Sundberg
- The Jackson Laboratory, Bar Harbor, Maine, United States of America
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Prunier F, Terrien G, Le Corre Y, Apana ALY, Bière L, Kauffenstein G, Furber A, Bergen AAB, Gorgels TGMF, Le Saux O, Leftheriotis G, Martin L. Pseudoxanthoma elasticum: cardiac findings in patients and Abcc6-deficient mouse model. PLoS One 2013; 8:e68700. [PMID: 23935882 PMCID: PMC3720798 DOI: 10.1371/journal.pone.0068700] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 05/31/2013] [Indexed: 01/01/2023] Open
Abstract
Background Pseudoxanthoma elasticum (PXE), caused by mutations in the ABCC6 gene, is a rare multiorgan disease characterized by the mineralization and fragmentation of elastic fibers in connective tissue. Cardiac complications reportedly associated with PXE are mainly based on case reports. Methods A cohort of 67 PXE patients was prospectively assessed. Patients underwent physical examination, electrocardiogram, transthoracic echocardiography, cardiac magnetic resonance imaging (CMR), treadmill testing, and perfusion myocardial scintigraphy (SPECT). Additionally, the hearts of a PXE mouse models (Abcc6−/−) and wild-type controls (WT) were analyzed. Results Three patients had a history of proven coronary artery disease. In total, 40 patients underwent exercise treadmill tests, and 28 SPECT. The treadmill tests were all negative. SPECT showed mild perfusion abnormalities in two patients. Mean left ventricular (LV) dimension and function values were within the normal range. LV hypertrophy was found in 7 (10.4%) patients, though the hypertrophy etiology was unknown for 3 of those patients. Echocardiography revealed frequent but insignificant mitral and tricuspid valvulopathies. Mitral valve prolapse was present in 3 patients (4.5%). Two patients exhibited significant aortic stenosis (3.0%). While none of the functional and histological parameters diverged significantly between the Abcc6−/− and WT mice groups at age of 6 and 12 months, the 24-month-old Abcc6−/− mice developed cardiac hypertrophy without contractile dysfunction. Conclusions Despite sporadic cases, PXE does not appear to be associated with frequent cardiac complications. However, the development of cardiac hypertrophy in the 24-month-old Abcc6−/− mice suggests that old PXE patients might be prone to developing late cardiopathy.
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Elkins CA, Beenken KE. Modeling the Tripartite Drug Efflux Pump Archetype: Structural and Functional Studies of the Macromolecular Constituents Reveal More Than Their Names Imply. J Chemother 2013; 17:581-92. [PMID: 16433187 DOI: 10.1179/joc.2005.17.6.581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
It is a remarkable age in molecular biology when one can argue that our current understanding of a process is influenced as much by structural studies as it is by genetic and physiological manipulations. This statement is particularly poignant with membrane proteins for which structural knowledge has been long impeded by the inability to easily obtain crystal structures in a lipid matrix. Thus, several high-resolution structures of the components comprising tripartite multidrug efflux pumps from Escherichia coli and Pseudomonas aeruginosa are now available and were received with much acclaim over ever-evolving crystal structures of soluble, aqueous proteins. These structures, in conjunction with functional mutagenesis studies, have provided insight into substrate capture and binding domains and redefined the potential interactions between individual pump constituents. However, correct assembly of the components is still a matter of debate as is the functional contribution of each to the translocation of drug substrates over long distances spanning the Gram-negative cell envelope.
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Affiliation(s)
- C A Elkins
- Division of Microbiology, National Center for Toxicological Research, United States Food and Drug Administration, Jefferson, Arkansas 72079-9502, USA.
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Li Q, Guo H, Chou DW, Harrington DJ, Schurgers LJ, Terry SF, Uitto J. Warfarin accelerates ectopic mineralization in Abcc6(-/-) mice: clinical relevance to pseudoxanthoma elasticum. Am J Pathol 2013; 182:1139-50. [PMID: 23415960 PMCID: PMC3620423 DOI: 10.1016/j.ajpath.2012.12.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 12/19/2012] [Accepted: 12/31/2012] [Indexed: 01/01/2023]
Abstract
Pseudoxanthoma elasticum (PXE) is a multisystem ectopic mineralization disorder caused by mutations in the ABCC6 gene. Warfarin, a commonly used anticoagulant, is associated with increased mineralization of the arterial blood vessels and cardiac valves. We hypothesized that warfarin may accelerate ectopic tissue mineralization in PXE, with clinical consequences. To test this hypothesis, we developed a model in which Abcc6(-/-) mice, which recapitulate features of PXE, were fed a diet supplemented with warfarin and vitamin K1. Warfarin action was confirmed by significantly increased serum levels of oxidized vitamin K. For mice placed on a warfarin-containing diet, quantitative chemical and morphometric analyses revealed massive accumulation of mineral deposits in a number of tissues. Mice fed a warfarin-containing diet were also shown to have abundant uncarboxylated form of matrix Gla protein, which allowed progressive tissue mineralization to ensue. To explore the clinical relevance of these findings, 1747 patients with PXE from the approximately 4000 patients in the PXE International database were surveyed about the use of warfarin. Of the 539 respondents, 2.6% reported past or present use of warfarin. Based on the prevalence of PXE (approximately 1:50,000), thousands of patients with PXE worldwide may be at risk for worsening of PXE as a result of warfarin therapy.
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Affiliation(s)
- Qiaoli Li
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Haitao Guo
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - David W. Chou
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Dominic J. Harrington
- Nutristasis Unit, St. Thomas' Hospital, King's Healthcare Partners, London, United Kingdom
| | - Leon J. Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, University of Maastricht, Maastricht, The Netherlands
| | | | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
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Abstract
Pseudoxanthoma elasticum (PXE), which demonstrates progressive build-up of calcium phosphate and proteoglycan deposits in skin, eye, and arteries, has been associated with myocardial infarctions, stroke, and blindness. In a mouse model of PXE, a magnesium-enriched diet prevents mineralization of the vibrissae capsule, an early biomarker for PXE. However, biomarkers for therapeutic responses in PXE have not been identified in humans. Because PXE patients have an increased carotid intima-media thickness (CIMT), a risk factor for cardiovascular disease and stroke, we analyzed the feasibility of CIMT as a treatment endpoint before and after magnesium supplementation in a mouse model of PXE (Abcc6(-/-) ). CIMT was measured in 1-year-old Abcc6(-/-) and Abcc6(+/+) mice fed either standard rodent diet with or without magnesium oxide supplementation for 2 months. Baseline CIMT in Abcc6(-/-) versus Abcc6(+/+) mice was increased (p value = 0.009), whereas CIMT in magnesium-treated versus untreated Abcc6(-/-) mice was reduced (p value = 0.024). CIMT is a novel treatment endpoint in this mouse model and may serve as a predictive biomarker of therapeutic response in PXE patients. In that context, magnesium oxide significantly reduced CIMT in PXE mice, and may be useful for disease prevention in PXE patients.
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Affiliation(s)
- Erine A Kupetsky-Rincon
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
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Abstract
Pseudoxanthoma elasticum (PXE), a heritable multi-system disorder, is caused by mutations in the ABCC6 gene primarily expressed in the liver. Recent analysis of cultured fibroblasts from patients with PXE has suggested compensatory alterations in the expression of the ABCA-subfamily of genes. We have now determined by quantitative RT-PCR the level of expression of Abca-family of genes in a mouse model of PXE developed by targeted ablation of Abcc6. The results indicated variable levels of mRNA for different Abca genes in the liver; however, only one of them, Abca4, was significantly, ∼6.5-fold, upregulated in the Abcc6(-/-) mice in comparison with wild-type mice. In the same mice, Abca4 was not upregulated in the eyes or the kidney, suggesting that the upregulation of Abca4 in the liver is a tissue-specific compensatory consequence of the 'knock-out' of Abcc6.
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Li Q, Sadowski S, Frank M, Chai C, Váradi A, Ho SY, Lou H, Dean M, Thisse C, Thisse B, Uitto J. The abcc6a gene expression is required for normal zebrafish development. J Invest Dermatol 2010; 130:2561-8. [PMID: 20596085 PMCID: PMC3357064 DOI: 10.1038/jid.2010.174] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Pseudoxanthoma elasticum (PXE) is caused by mutations in the ABCC6 gene, which encodes a putative efflux transporter, ABCC6. The zebrafish (Danio rerio) has two ABCC6-related sequences. To study the function of abcc6 during zebrafish development, the mRNA expression levels were measured using RT-PCR and in situ hybridization. The abcc6a showed a relatively high level of expression at 5 days post-fertilization (d.p.f.) and the expression was specific to the Kupffer's vesicles. The abcc6b expression was evident at 6 hours post-fertilization (h.p.f.) and remained high up to 8 d.p.f., corresponding to embryonic kidney proximal tubules. Morpholinos were designed to both genes to prevent pre-mRNA splicing and block translation. Injection of the abcc6a morpholinos into 1-4 cell zebrafish embryos decreased gene expression by 54-81%, and induced a phenotype, pericardial edema and curled tail associated with death at around 8 d.p.f. Microinjecting zebrafish embryos with full-length mouse Abcc6 mRNA together with the morpholino completely rescued this phenotype. No phenotypic changes were observed when the abcc6b gene morpholino was injected into embryos with knock-down efficiency of 100%. These results suggest that abcc6a is an essential gene for normal zebrafish development and provide insight into the function of ABCC6, the gene mutated in PXE.
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Affiliation(s)
- Qiaoli Li
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
| | - Sara Sadowski
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
| | - Michael Frank
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
| | - ChunLi Chai
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Andras Váradi
- Institute of Enzymology, Hungarian Academy of Sciences, Budapest, Hungary
| | - Shiu-Ying Ho
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
| | - Hong Lou
- SAIC-Frederick, Frederick, Maryland, MD 21702, USA
| | - Michael Dean
- Human Genetic Section, Laboratory of Experimental Immunology, Cancer and Inflammation Program, NCI-FCRDC, Frederick, Maryland, 21702 USA
| | - Christine Thisse
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Bernard Thisse
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
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Zhang H, Gerson T, Varney ML, Singh RK, Vinogradov SV. Multifunctional peptide-PEG intercalating conjugates: programmatic of gene delivery to the blood-brain barrier. Pharm Res 2010; 27:2528-43. [PMID: 20824308 DOI: 10.1007/s11095-010-0256-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Accepted: 08/19/2010] [Indexed: 01/25/2023]
Abstract
PURPOSE To enhance transfection efficacy of pDNA through the application of multifunctional peptide-PEG-tris-acridine conjugates (pPAC) and the formation of biodegradable core-shell polyplexes for gene delivery to the blood-brain barrier (BBB). METHODS pPAC-mediated transfection was compositionally optimized in mouse BBB cells (bEnd.3). Cellular uptake and trafficking, and brain accumulation of pDNA was evaluated by fluorescent imaging and histochemistry. We constructed anti-MRP4 siRNA-producing vectors and evaluated the efficacy of MRP4 down-regulation of MRP4 by Western blot and qPCR, and its effect on the uptake of (3)H-AZT, an MRP4 substrate. RESULTS A core-shell gene delivery system (GDS) was assembled from pDNA and pPAC, carrying multifunctional peptides with NLS, TAT, and brain-specific BH, or ApoE sequences, and biodegradable pLPEI polyamine. This GDS demonstrated better cellular and nuclear accumulation, and a 25-fold higher transfection efficacy in slow-dividing bEnd.3 cells compared to ExGen500. Inclusion of brain-targeting pPAC enhanced in vivo accumulation of functional pDNA in brain capillaries. Treatment by encapsulated anti-MRP4 siRNA-producing pDNA caused transient down-regulation of MRP4, and, after intravenous injection in Balb/c mice, enhanced AZT uptake in the brain by 230-270%. CONCLUSIONS The pPAC represent novel efficient components of GDS that could find various gene therapy applications, including genetic modulation of the BBB.
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Affiliation(s)
- Hongwei Zhang
- Center for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
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Okombo J, Kiara SM, Rono J, Mwai L, Pole L, Ohuma E, Borrmann S, Ochola LI, Nzila A. In vitro activities of quinine and other antimalarials and pfnhe polymorphisms in Plasmodium isolates from Kenya. Antimicrob Agents Chemother 2010; 54:3302-7. [PMID: 20516285 PMCID: PMC2916339 DOI: 10.1128/aac.00325-10] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Revised: 04/25/2010] [Accepted: 05/23/2010] [Indexed: 01/24/2023] Open
Abstract
Resistance to the amino alcohol quinine has been associated with polymorphisms in pfnhe, a sodium hydrogen exchanger. We investigated the role of this gene in quinine resistance in vitro in isolates from Kenya. We analyzed pfnhe whole-gene polymorphisms, using capillary sequencing, and pfcrt at codon 76 (pfcrt-76) and pfmdr1 at codon 86 (pfmdr1-86), using PCR-enzyme restriction methodology, in 29 isolates from Kilifi, Kenya, for association with the in vitro activities of quinine and 2 amino alcohols, mefloquine and halofantrine. In vitro activity was assessed as the drug concentration that inhibits 50% of parasite growth (IC50). The median IC50s of quinine, halofantrine, and mefloquine were 92, 22, and 18 nM, respectively. The presence of 2 DNNND repeats in microsatellite ms4760 of pfnhe was associated with reduced susceptibility to quinine (60 versus 227 nM for 1 and 2 repeats, respectively; P<0.05), while 3 repeats were associated with restoration of susceptibility. The decrease in susceptibility conferred by the 2 DNNND repeats was more pronounced in parasites harboring the pfmdr1-86 mutation. No association was found between susceptibility to quinine and the pfcrt-76 mutation or between susceptibility to mefloquine or halofantrine and the pfnhe gene and the pfcrt-76 and pfmdr1-86 mutations. Using previously published data on the in vitro activities of chloroquine, lumefantrine, piperaquine, and dihydroartemisinin, we investigated the association of their activities with pfnhe polymorphism. With the exception of a modulation of the activity of lumefantrine by a mutation at position 1437, pfnhe did not modulate their activities. Two DNNND repeats combined with the pfmdr1-86 mutation could be used as an indicator of reduced susceptibility to quinine.
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Affiliation(s)
- John Okombo
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Steven M. Kiara
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Josea Rono
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Leah Mwai
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Lewa Pole
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Eric Ohuma
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Steffen Borrmann
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Lynette Isabella Ochola
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
| | - Alexis Nzila
- Kenya Medical Research Institute (KEMRI)/Wellcome Trust Collaborative Research Program, P.O. Box 230, 80108 Kilifi, Kenya, University of Oxford, Nuffield Department of Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Institute of Hygiene, University of Heidelberg School of Medicine, Heidelberg, Germany
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Yurchenko OV, Rusetskya NV, Naleskina LA, Chekhun VF. Ultrastructural changes in tumor cells treated with liposomal forms of anticancer drugs. Exp Oncol 2010; 32:23-28. [PMID: 20332761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
AIM To determine the main ultrastructural changes in MCF-7 sublines sensitive and resistant to cytotoxic action of anticancer drugs, resulting from the treatment with conventional and liposomal forms of cisplatin and doxorubicin. METHODS Electron microscopy, light microscopy, MTT-test. RESULTS It has been shown that the phenomenon of drug resistance is associated with complication of ultrastructural organization of cells and more high differentiation by the main cytomorphologic characteristics which promote their resistance to cytotoxic action of anticancer preparations. Cytoarchitectonics of all resistant cells possesses common patterns and doesn't depend on the particular drugs toward which the resistance has been developed. It has been shown that the cells of the parental form MCF-7 line are more sensitive to cytotoxic action of doxorubicin than to cisplatin. Liposomal forms of anticancer drugs used at the same concentrations that the conventional ones, especially that of doxorubicin, caused more expressed alterations in ultrastructural organization of cells of all studied sublines with dominance of apoptotic processes. CONCLUSION Evaluating an effect of equal concentrations of cisplatin and doxorubicin in conventional and liposomal forms, one may conclude on higher cytotoxic action of doxorubicin vs. cisplatin that is expressed in a wider spectrum of ultrastructural changes of cell architectonics in different sublines of MCF-7 cells and higher rate of apoptosis.
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Affiliation(s)
- O V Yurchenko
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NAS of Ukraine, Kiev 03022, Ukraine
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Yang JW, Lee PH, Hutchinson IV, Pravica V, Shah T, Min DI. Genetic polymorphisms of MRP2 and UGT2B7 and gastrointestinal symptoms in renal transplant recipients taking mycophenolic acid. Ther Drug Monit 2009; 31:542-8. [PMID: 19730281 DOI: 10.1097/ftd.0b013e3181b1dd5e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The aim of this study was to determine the relationship between single nucleotide polymorphisms in multidrug resistance protein 2 (MRP2) and uridine diphosphate glucuronosyltransferase (UGT) 2B7 and the severity of gastrointestinal (GI) symptoms in patients receiving mycophenolic acid (MPA). A total of 67 renal transplant recipients taking MPA derivatives were included in the study. Genotypes for MRP2 C-24 T and UGT2B7 C802 T were determined. The incidence and severity of GI symptoms were assessed using the validated Gastrointestinal Symptom Rating Scale (GSRS) at baseline, 2 weeks, 3 months, and 6 months after transplantation. The mean overall GSRS score and the score on the subscale for diarrhea were compared using the Kruskal-Wallis test. The overall GSRS scores (23.5 +/- 4.5 vs. 26.7 +/- 9.9, P = 0.68) or diarrhea subscores (3.5 +/- 0.9 vs. 5.1 +/- 3.3, P = 0.08) were not significantly different among patients with the heterozygous variant MRP2 C-24 T and those with the homozygous wild type. For UGT2B7, the overall mean GSRS scores were significantly different between the homozygous wild type and the variant type (CC vs. CT + TT, 29.2 +/- 9.3 vs. 24.0 +/- 8.2, P = 0.009), although diarrhea subscale scores did not reach statistical significance (CC vs. CT + TT, 5.7 +/- 4.1 vs. 4.1 +/- 1.9, P = 0.13). When the genotypes for MRP2 and UGT2B7 were considered together, patients with the variant forms of MRP2 and UGT2B7 had significantly lower overall GSRS scores (CC-CC vs. CT-CT/TT, 22.5 +/- 4.3 vs. 30.1 +/- 10.1, P = 0.04) and diarrhea subscale scores compared to wild type (CC-CC vs. CT-CT/TT, 3.4 +/- 0.7 vs. 6.2 +/- 4.4, P = 0.03). However, there were no differences in GSRS scores between patients receiving either mycophenolic mofetil (MMF) or enteric-coated mycophenolic acid (EC-MPA) regardless of whether the patients were receiving different calcineurin inhibitors. In conclusion, this study suggests that among patients receiving MPA, those with UGT2B7 variant genotypes are protected from the GI side effects of MPA regardless of the formulation used or concurrent calcineurin inhibitors administered. MRP2 genotypes did not show significant differences in GI side effects among patients taking MPA therapy.
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Affiliation(s)
- Jae Wook Yang
- Mendez National Institute of Transplantation, Los Angeles, California, USA
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Li Q, Jiang Q, Schurgers LJ, Uitto J. Pseudoxanthoma elasticum: reduced gamma-glutamyl carboxylation of matrix gla protein in a mouse model (Abcc6-/-). Biochem Biophys Res Commun 2007; 364:208-13. [PMID: 17942075 PMCID: PMC2700335 DOI: 10.1016/j.bbrc.2007.09.122] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2007] [Accepted: 09/24/2007] [Indexed: 01/03/2023]
Abstract
Pseudoxanthoma elasticum (PXE), a heritable multi-system disorder manifesting with ectopic mineralization of soft connective tissues, is caused by mutations in the ABCC6/MRP6 gene/protein system, but the mechanisms how the ABCC6 mutations lead to aberrant mineralization are currently unknown. In this study, we utilized a transgenic mouse model, Abcc6-/-, to examine the mineralization processes. We focused on matrix gla protein (MGP) which has been shown to be critical, when activated by gamma-carboxylation of glutamyl residues, for prevention of unwanted mineralization. The concentration of MGP in the serum of Abcc6-/- mice was significantly reduced when compared to wild-type controls (p<0.004). More importantly, MGP isolated from the liver of Abcc6-/- mice was largely under-carboxylated and therefore possesses no activity. Finally, examination of the Abcc6-/- mice revealed association of total and under-carboxylated forms of MGP with ectopic mineralization while the gamma-carboxylated form was essentially absent. These results suggest that MGP in Abcc6-/- mice is largely in inactive form and is unable to prevent the unwanted mineralization of connective tissues in PXE.
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Affiliation(s)
| | | | - Leon J. Schurgers
- Cardiovascular Research Institute and Vitak BV, University of Maastricht, Maastricht, The Netherlands
| | - Jouni Uitto
- Corresponding Author Jouni Uitto, M.D., Ph.D., Department of Dermatology and Cutaneous Biology, Jefferson Medical College, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107, USA, Tel: (215) 503-5785, Fax: (215) 503-5788, E-mail:
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Nozaki Y, Kusuhara H, Kondo T, Iwaki M, Shiroyanagi Y, Nakayama H, Horita S, Nakazawa H, Okano T, Sugiyama Y. Species Difference in the Inhibitory Effect of Nonsteroidal Anti-Inflammatory Drugs on the Uptake of Methotrexate by Human Kidney Slices. J Pharmacol Exp Ther 2007; 322:1162-70. [PMID: 17578901 DOI: 10.1124/jpet.107.121491] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Simultaneous use of nonsteroidal anti-inflammatory drugs (NSAIDs), probenecid, and other drugs has been reported to delay the plasma elimination of methotrexate in patients. Previously, we have reported that inhibition of the uptake process cannot explain such drug-drug interactions using rats. The present study quantitatively evaluated the possible role of the transporters in such drug-drug interactions using human kidney slices and membrane vesicles expressing human ATP-binding cassette (ABC) transporters. The uptake of methotrexate by human kidney slices was saturable with a K(m) of 45 to 49 microM. Saturable uptake of methotrexate by human kidney slices was markedly inhibited by p-aminohippurate and benzylpenicillin, but only weakly by 5-methyltetrahydrofolate. These transport characteristics are similar to those of a basolateral organic anion transporter (OAT) 3/SLC22A8. NSAIDs and probenecid inhibited the uptake of methotrexate by human kidney slices, and, in particular, salicylate, indomethacin, phenylbutazone, and probenecid were predicted to exhibit significant inhibition at clinically observed plasma concentrations. Among ABC transporters, such as BCRP/ABCG2, multidrug resistance-associated protein (MRP) 2/ABCC2, and MRP4/ABCC4, which are candidates for the luminal efflux of methotrexate, ATP-dependent uptake of methotrexate by MRP4-expressing membrane vesicles was most potently inhibited by NSAIDs. Salicylate and indomethacin were predicted to inhibit MRP4 at clinical plasma concentrations. Diclofenac-glucuronide significantly inhibited MRP2-mediated transport of methotrexate in a concentration-dependent manner, whereas naproxen-glucuronide had no effect. Inhibition of renal uptake (via OAT3) and efflux processes (via MRP2 and MRP4) explains the possible sites of drug-drug interaction for methotrexate with probenecid and some NSAIDs, including their glucuronides.
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Affiliation(s)
- Yoshitane Nozaki
- Department of Molecular Pharmacokinetics, Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyoku-Tokyo 13-0033, Japan
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Abstract
More than 30 years ago it was discovered that permeability glycoprotein (P-gp) can cause drug resistance. Over the following decades numerous studies showed that high expression of P-gp is associated with poor prognosis in acute myeloid leukemia in adults and that it causes multidrug resistance via ATP-dependent drug efflux. It was hoped that an inhibition of P-gp could sensitize resistant leukemic cells to chemotherapy and thus improve treatment results. Today we know that the family of ATP-binding cassette transporters (ABC transporters) comprises 48 different proteins. Some of them seem to be able to cause drug resistance as well as P-gp. This review focuses on emerging data on the clinical relevance of other ABC transporters, such as BCRP, MRP3, and ABCA3. When Heracles fought the ancient Hydra, he had to fight all the heads at ones but only one head was vital for the beast. Can we block all the relevant ABC transporters at once? Is there one transporter that is more important than the others?
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Affiliation(s)
- D Steinbach
- Pediatrics, University Children's Hospital, Ulm, Germany.
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47
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Meng H, Vera I, Che N, Wang X, Wang SS, Ingram-Drake L, Schadt EE, Drake TA, Lusis AJ. Identification of Abcc6 as the major causal gene for dystrophic cardiac calcification in mice through integrative genomics. Proc Natl Acad Sci U S A 2007; 104:4530-5. [PMID: 17360558 PMCID: PMC1838635 DOI: 10.1073/pnas.0607620104] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Indexed: 11/18/2022] Open
Abstract
The genetic factors contributing to the complex disorder of myocardial calcification are largely unknown. Using a mouse model, we fine-mapped the major locus (Dyscalc1) contributing to the dystrophic cardiac calcification (DCC) to an 840-kb interval containing 38 genes. We then identified the causal gene by using an approach integrating genetic segregation and expression array analyses to identify, on a global scale, cis-acting DNA variations that perturb gene expression. By studying two intercrosses, in which the DCC trait segregates, a single candidate gene (encoding the ATP-binding cassette transporter ABCC6) was identified. Transgenic complementation confirmed Abcc6 as the underlying causal gene for Dyscalc1. We demonstrate that in the cross, the expression of Abcc6 is highly correlated with the local mineralization regulatory system and the BMP2-Wnt signaling pathway known to be involved in the systemic regulation of calcification, suggesting potential pathways for the action of Abcc6 in DCC. Our results demonstrate the power of the integrative genomics in discovering causal genes and pathways underlying complex traits.
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Affiliation(s)
- Haijin Meng
- Departments of *Medicine, Cardiology Division
| | - Iset Vera
- Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461; and
| | - Nam Che
- Departments of *Medicine, Cardiology Division
| | - Xuping Wang
- Departments of *Medicine, Cardiology Division
| | | | | | - Eric E. Schadt
- Rosetta Inpharmatics LLC, Merck & Co., Inc., Seattle, WA 98109
| | | | - Aldons J. Lusis
- Microbiology, Immunology, Molecular Genetics, Medicine, and Human Genetics, University of California, Los Angeles, CA 90095
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48
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Jiang Q, Li Q, Uitto J. Aberrant mineralization of connective tissues in a mouse model of pseudoxanthoma elasticum: systemic and local regulatory factors. J Invest Dermatol 2007; 127:1392-402. [PMID: 17273159 DOI: 10.1038/sj.jid.5700729] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Pseudoxanthoma elasticum (PXE) is caused by mutations in the ABCC6 gene, but the cellular and molecular events leading to aberrant mineralization of soft tissues are unknown. To characterize the mineralization process, we examined a PXE animal model, the Abcc6-/- mouse, with respect to specific proteins serving as inhibitors of mineralization. The levels of calcium and phosphate in serum of these mice were normal, but the Abcc6-/- serum had less ability to prevent the mineral deposition induced by inorganic phosphate in a cell culture system. Addition of fetuin-A to the culture system prevented the mineralization. The calcium x phosphate product was markedly elevated in the mineralized vibrissae of Abcc6-/- mice, an early biomarker of the mineralization process, consistent with histopathologic findings. Levels of fetuin-A were slightly decreased in Abcc6-/- serum, and positive immunostaining for matrix-gla-protein (MGP), fetuin-A, and ankylosis protein (Ank) as well as alkaline phosphatase activity were strongly associated with the mineralization process. In situ hybridization demonstrated that the genes for MGP and Ank were expressed locally in vibrissae, whereas fetuin-A was expressed highly in the liver. These data suggest that the deposition of the bone-associated proteins spatially coincides with mineralization and actively regulates this process locally and systemically.
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Affiliation(s)
- Qiujie Jiang
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
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Douet V, Heller MB, Le Saux O. DNA methylation and Sp1 binding determine the tissue-specific transcriptional activity of the mouse Abcc6 promoter. Biochem Biophys Res Commun 2006; 354:66-71. [PMID: 17214963 PMCID: PMC1876782 DOI: 10.1016/j.bbrc.2006.12.151] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 12/15/2006] [Indexed: 11/20/2022]
Abstract
The gene encoding the ABCC6 protein, an ABC transporter of the multidrug resistance-associated protein (MRP), is mainly expressed in liver and kidney. Mutations in ABCC6 are responsible for the development of the pseudoxanthoma elasticum (PXE) phenotype. PXE is a recessive disease characterized by the calcification of elastic fibers resulting in dermal, vascular, and ocular clinical manifestations. The physiological function of ABCC6 and the rodent orthologs Abcc6 is unknown and their precise relationship to elastic fibers is only a matter of speculation. Despite several studies focused on the transcriptional regulation of ABCC6/Abcc6, the molecular signals conferring the tissue-specificity to the ABCC6/Abcc6 expression are not well defined. In this report, we determined the level of the mouse Abcc6 promoter methylation in tissues with low level of expression (tail extremity and skin), intermediate (kidney), and high level of expression (liver). We observed that high and moderate levels of methylation correlated with low levels of Abcc6 expression. Moreover, we determined that CpG methylation of the Abcc6 proximal promoter region was interfering with the binding of the Sp1 transcription factor thereby inhibiting Sp1-dependent transactivation. Thus, our data provide the first direct evidence that an epigenetic mechanism regulates the binding of transcription factor Sp1 to the proximal promoter and participates in the tissue-specific expression control of the mouse Abcc6 gene.
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Affiliation(s)
- Vanessa Douet
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA
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50
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Douet V, VanWart CM, Heller MB, Reinhard S, Le Saux O. HNF4alpha and NF-E2 are key transcriptional regulators of the murine Abcc6 gene expression. ACTA ACUST UNITED AC 2006; 1759:426-36. [PMID: 16997394 PMCID: PMC1876778 DOI: 10.1016/j.bbaexp.2006.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2006] [Revised: 08/04/2006] [Accepted: 08/06/2006] [Indexed: 12/30/2022]
Abstract
Mutations in an ABC transporter gene called ABCC6 are responsible for pseudoxanthoma elasticum (PXE), a rare heritable disease characterized by elastic fiber calcification in skin, ocular and vascular tissues. The presumed function of this ABC transporter is to export metabolites from polarized cells. However, the endogenous substrate(s) are unknown and the exact relationship with elastic fibers is unclear. As ABCC6 is only expressed at high level in liver and kidneys, tissues seemingly unrelated to the PXE phenotype, we explored the transcriptional regulation of the murine Abcc6 gene to define the transcriptional signal conferring tissue specificity and to gather clues on its possible biological function. We cloned 2.9 kb of the mAbcc6 5'-flanking region and several deletion constructs linked to a luciferase reporter gene. We delineated a proximal promoter and a liver-specific enhancer region. We also demonstrated that the proximal region is a TATA-less promoter requiring an intact CCAAT-box and Sp1 binding for its basal activity. By using reporter assays and chromatin immunoprecipitations, we showed that HNF4alpha and surprisingly, NF-E2, enhanced the mAbcc6 promoter activity. The involvement of both HNF4alpha and NF-E2 in the mAbcc6 gene regulation suggests that Abcc6 might be involved in a detoxification processes related to hemoglobin or heme.
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Affiliation(s)
- Vanessa Douet
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, 651 Ilalo Street, BSB 222, Honolulu, HI 96813, USA
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