1
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Grandits M, Ecker GF. Ligand- and Structure-based Approaches for Transmembrane Transporter Modeling. Curr Drug Res Rev 2024; 16:81-93. [PMID: 37157206 PMCID: PMC11340286 DOI: 10.2174/2589977515666230508123041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 03/15/2023] [Accepted: 03/28/2023] [Indexed: 05/10/2023]
Abstract
The study of transporter proteins is key to understanding the mechanism behind multidrug resistance and drug-drug interactions causing severe side effects. While ATP-binding transporters are well-studied, solute carriers illustrate an understudied family with a high number of orphan proteins. To study these transporters, in silico methods can be used to shed light on the basic molecular machinery by studying protein-ligand interactions. Nowadays, computational methods are an integral part of the drug discovery and development process. In this short review, computational approaches, such as machine learning, are discussed, which try to tackle interactions between transport proteins and certain compounds to locate target proteins. Furthermore, a few cases of selected members of the ATP binding transporter and solute carrier family are covered, which are of high interest in clinical drug interaction studies, especially for regulatory agencies. The strengths and limitations of ligand-based and structure-based methods are discussed to highlight their applicability for different studies. Furthermore, the combination of multiple approaches can improve the information obtained to find crucial amino acids that explain important interactions of protein-ligand complexes in more detail. This allows the design of drug candidates with increased activity towards a target protein, which further helps to support future synthetic efforts.
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Affiliation(s)
- Melanie Grandits
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Gerhard F. Ecker
- Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
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2
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Abdelmaksoud NM, Abulsoud AI, Doghish AS, Abdelghany TM. From resistance to resilience: Uncovering chemotherapeutic resistance mechanisms; insights from established models. Biochim Biophys Acta Rev Cancer 2023; 1878:188993. [PMID: 37813202 DOI: 10.1016/j.bbcan.2023.188993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
Despite the tremendous advances in cancer treatment, resistance to chemotherapeutic agents impedes higher success rates and accounts for major relapses in cancer therapy. Moreover, the resistance of cancer cells to chemotherapy is linked to low efficacy and high recurrence of cancer. To stand up against chemotherapy resistance, different models of chemotherapy resistance have been established to study various molecular mechanisms of chemotherapy resistance. Consequently, this review is going to discuss different models of induction of chemotherapy resistance, highlighting the most common mechanisms of cancer resistance against different chemotherapeutic agents, including overexpression of efflux pumps, drug inactivation, epigenetic modulation, and epithelial-mesenchymal transition. This review aims to open a new avenue for researchers to lower the resistance to the existing chemotherapeutic agents, develop new therapeutic agents with low resistance potential, and establish possible prognostic markers for chemotherapy resistance.
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Affiliation(s)
- Nourhan M Abdelmaksoud
- Department of Biochemistry, Faculty of Pharmacy, Heliopolis University, 3 Cairo-Belbeis Desert Road, P.O. Box 3020 El Salam, 11785 Cairo, Egypt.
| | - Ahmed I Abulsoud
- Department of Biochemistry, Faculty of Pharmacy, Heliopolis University, 3 Cairo-Belbeis Desert Road, P.O. Box 3020 El Salam, 11785 Cairo, Egypt; Department of Biochemistry and Molecular Biology, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11823, Egypt
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt; Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11823, Egypt
| | - Tamer M Abdelghany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11884, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University, 3 Cairo-Belbeis Desert Road, P.O. Box 3020 El Salam, 11785 Cairo, Egypt.
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3
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Zechner M, Castro Jaramillo CA, Zubler NS, Taddio MF, Mu L, Altmann KH, Krämer SD. In Vitro and In Vivo Evaluation of ABCG2 (BCRP) Inhibitors Derived from Ko143. J Med Chem 2023; 66:6782-6797. [PMID: 37154765 DOI: 10.1021/acs.jmedchem.3c00168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Breast cancer resistance protein (BCRP, ABCG2) is an efflux transporter that plays a crucial role in multidrug resistance to antineoplastic drugs. Ko143, an analogue of the natural product fumitremorgin C, is a potent inhibitor of ABCG2 but is rapidly hydrolyzed to an inactive metabolite in vivo. To identify ABCG2 inhibitors with improved metabolic stability, we have assessed a series of Ko143 analogues for their ability to inhibit ABCG2-mediated transport in ABCG2-transduced MDCK II cells and determined the stability of the most potent compounds in liver microsomes. The most promising analogues were evaluated in vivo by positron emission tomography. In vitro, three of the tested analogues were potent ABCG2 inhibitors and stable in microsomes. In vivo, they increased the distribution of the ABCG2/ABCB1 substrate [11C]tariquidar to the brain both in wild-type (with Abcb1a/b transport blocked by tariquidar) and Abcb1a/b(-/-) mice. One analogue was more potent than Ko143 in both animal models.
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Affiliation(s)
- Melanie Zechner
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Claudia A Castro Jaramillo
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Nadine S Zubler
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Marco F Taddio
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Linjing Mu
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
- Department of Nuclear Medicine, University Hospital Zurich, CH-8091 Zurich, Switzerland
| | - Karl-Heinz Altmann
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
| | - Stefanie D Krämer
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 4, CH-8093 Zurich, Switzerland
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4
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Lin R, Zhang L, Ye B, Wang Y, Li YD, Jason H, Liu W, Hu P, Chen J, Chen ZS, Chen Z. A multi-functional nano-system combining PI3K-110α/β inhibitor overcomes P-glycoprotein mediated MDR and improves anti-cancer efficiency. Cancer Lett 2023; 563:216181. [PMID: 37086953 DOI: 10.1016/j.canlet.2023.216181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 04/08/2023] [Accepted: 04/11/2023] [Indexed: 04/24/2023]
Abstract
P-glycoprotein (P-gp/ABCB1)-mediated multidrug resistance (MDR) in cancers severely limit chemotherapeutic efficacy. We recently reported that phosphatidylinositol-3-kinase (PI3K) 110α and 110β subunits can be novel targets for reversal of P-gp mediated MDR in cancers, and BAY-1082439 as an inhibitor specific for PI3K 110α and 110β subunits could reverse P-gp-mediated MDR by downregulating P-gp expression in cancer cells. However, BAY-1082439 has very low solubility, short half-life and high in-vivo clearance rate. Till now, nano-system with the functions to target PI3K P110α and P110β and reverse P-gp mediated MDR in cancers has not been reported. In our study, a tumor targeting drug delivery nano-system PBDF was established, which comprised doxorubicin (DOX) and BAY-1082439 respectively encapsulated by biodegradable PLGA-SH nanoparticles (NPs) that were grafted to gold nanorods (Au NRs) modified with FA-PEG-SH, to enhance the efficacy to reverse P-gp mediated MDR and to target tumor cells, further, to enhance the efficiency to inhibit MDR tumors overexpressing P-gp. In-vitro experiments indicated that PBDF NPs greatly enhanced uptake of DOX, improved the activity to reverse MDR, inhibited the cell proliferation, and induced S-phase arrest and apoptosis in KB-C2 cells, as compared with free DOX combining free BAY-1082439. In-vivo experiments further demonstrated that PBDF NPs improved the anti-tumor ability of DOX and inhibited development of KB-C2 tumors. Notably, the metastasis of KB-C2 cells in livers and lungs of nude mice were inhibited by treatment with PBDF NPs, which showed no obvious in-vitro or in-vivo toxicity.
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Affiliation(s)
- Ruikun Lin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China; Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China; University of Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
| | - Biwei Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China; Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Yanan Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China; Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Yi-Dong Li
- College of Pharmacy and Health Sciences, St. John's University, Queens, New York, 11439, USA
| | - Hsu Jason
- College of Pharmacy and Health Sciences, St. John's University, Queens, New York, 11439, USA
| | - Wenzhen Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Ping Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Jincan Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Zhe-Sheng Chen
- College of Pharmacy and Health Sciences, St. John's University, Queens, New York, 11439, USA
| | - Zhuo Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China; University of Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
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5
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Guan S, Zhong L, Yu H, Wang L, Jin Y, Liu J, Xiang H, Yu H, Wang L, Wang D. Molecular docking and proteomics reveals the synergistic antibacterial mechanism of theaflavin with β-lactam antibiotics against MRSA. Front Microbiol 2022; 13:993430. [PMID: 36452924 PMCID: PMC9702817 DOI: 10.3389/fmicb.2022.993430] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/11/2022] [Indexed: 04/09/2024] Open
Abstract
Recurrent epidemics of methicillin-resistant Staphylococcus aureus (S. aureus) (MRSA) have illustrated that the effectiveness of antibiotics in clinical application is rapidly fading. A feasible approach is to combine natural products with existing antibiotics to achieve an antibacterial effect. In this molecular docking study, we found that theaflavin (TF) preferentially binds the allosteric site of penicillin-binding protein 2a (PBP2a), inducing the PBP2a active site to open, which is convenient for β-lactam antibiotics to treat MRSA infection, instead of directly exerting antibacterial activity at the active site. Subsequent TMT-labeled proteomics analysis showed that TF treatment did not significantly change the landscape of the S. aureus USA300 proteome. Checkerboard dilution tests and kill curve assays were performed to validate the synergistic effect of TF and ceftiofur, and the fractional inhibitory concentration index (FICI) was 0.1875. The antibacterial effect of TF combined with ceftiofur was better than that of single-drug treatment in vitro. In addition, TF effectively enhanced the activity of ceftiofur in a mouse model of MRSA-induced pneumonia. Our findings provide a potential therapeutic strategy to combine existing antibiotics with natural products to resolve the prevalent infections of multidrug-resistant pathogens.
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Affiliation(s)
- Shuhan Guan
- College of Animal Science, Jilin University, Changchun, China
| | - Ling Zhong
- College of Animal Science, Jilin University, Changchun, China
| | - Hangqian Yu
- College of Animal Science, Jilin University, Changchun, China
| | - Li Wang
- Changchun University of Chinese Medicine, Changchun, China
| | - Yajing Jin
- College of Animal Science, Jilin University, Changchun, China
| | - Jingyu Liu
- College of Animal Science, Jilin University, Changchun, China
| | - Hua Xiang
- College of Animal Medicine, Jilin Agricultural University, Changchun, China
| | - Hao Yu
- College of Animal Science, Jilin University, Changchun, China
| | - Lin Wang
- State Key Laboratory for Zoonotic Diseases, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Dacheng Wang
- College of Animal Science, Jilin University, Changchun, China
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6
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Blair JMA, Zeth K, Bavro VN, Sancho-Vaello E. The role of bacterial transport systems in the removal of host antimicrobial peptides in Gram-negative bacteria. FEMS Microbiol Rev 2022; 46:6617596. [PMID: 35749576 PMCID: PMC9629497 DOI: 10.1093/femsre/fuac032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/23/2022] [Accepted: 06/22/2022] [Indexed: 01/09/2023] Open
Abstract
Antibiotic resistance is a global issue that threatens our progress in healthcare and life expectancy. In recent years, antimicrobial peptides (AMPs) have been considered as promising alternatives to the classic antibiotics. AMPs are potentially superior due to their lower rate of resistance development, since they primarily target the bacterial membrane ('Achilles' heel' of the bacteria). However, bacteria have developed mechanisms of AMP resistance, including the removal of AMPs to the extracellular space by efflux pumps such as the MtrCDE or AcrAB-TolC systems, and the internalization of AMPs to the cytoplasm by the Sap transporter, followed by proteolytic digestion. In this review, we focus on AMP transport as a resistance mechanism compiling all the experimental evidence for the involvement of efflux in AMP resistance in Gram-negative bacteria and combine this information with the analysis of the structures of the efflux systems involved. Finally, we expose some open questions with the aim of arousing the interest of the scientific community towards the AMPs-efflux pumps interactions. All the collected information broadens our understanding of AMP removal by efflux pumps and gives some clues to assist the rational design of AMP-derivatives as inhibitors of the efflux pumps.
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Affiliation(s)
- Jessica M A Blair
- College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Kornelius Zeth
- Department of Science and Environment, Roskilde University, Universitetsvej 1, 4000 Roskilde, Denmark
| | - Vassiliy N Bavro
- School of Life Sciences, University of Essex, Colchester, CO4 3SQ, United Kingdom
| | - Enea Sancho-Vaello
- Corresponding author. College of Medical and Dental Sciences, Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom. E-mail:
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7
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Advances in understanding the role of P-gp in doxorubicin resistance: Molecular pathways, therapeutic strategies, and prospects. Drug Discov Today 2021; 27:436-455. [PMID: 34624510 DOI: 10.1016/j.drudis.2021.09.020] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/22/2021] [Accepted: 09/29/2021] [Indexed: 12/11/2022]
Abstract
P-glycoprotein (P-gp) is a drug efflux transporter that triggers doxorubicin (DOX) resistance. In this review, we highlight the molecular avenues regulating P-gp, such as Nrf2, HIF-1α, miRNAs, and long noncoding (lnc)RNAs, to reveal their participation in DOX resistance. These antitumor compounds and genetic tools synergistically reduce P-gp expression. Furthermore, ATP depletion impairs P-gp activity to enhance the antitumor activity of DOX. Nanoarchitectures, including liposomes, micelles, polymeric nanoparticles (NPs), and solid lipid nanocarriers, have been developed for the co-delivery of DOX with anticancer compounds and genes enhancing DOX cytotoxicity. Surface modification of nanocarriers, for instance with hyaluronic acid (HA), can promote selectivity toward cancer cells. We discuss these aspects with a focus on P-gp expression and activity.
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8
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RNA-seq-based transcriptome analysis of a cefquinome-treated, highly resistant, and virulent MRSA strain. Microb Pathog 2021; 160:105201. [PMID: 34547409 DOI: 10.1016/j.micpath.2021.105201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 11/23/2022]
Abstract
The emergence and dissemination of methicillin-resistant Staphylococcus aureus (MRSA) strains of animal origin that are resistant to several antibiotics is of great concern. Cefquinome is a fourth-generation cephalosporin developed specifically for veterinary use. The mechanism of MRSA resistance to cefquinome is still not established. Therefore, we designed this study to evaluate the effect of cefquinome on the transcriptome of MRSA1679a, a strain that was isolated from a chicken. The transcriptome analysis indicated that multiple efflux pumps (QacA, NorB, Bcr, and ABCb) were upregulated in MRSA1679a as a resistance mechanism to expel cefquinome. Additionally, penicillin-binding protein 1A was overexpressed, which conferred resistance to cefquinome, a β-lactam antibiotic. Adhesion and the biofilm-forming capacity of the MRSA strain was also enhanced in addition to overexpression of many stress-related genes. Genes related to carbohydrate metabolism, secretion systems, and transport activity were also significantly upregulated in MRSA1679a. In conclusion, global transcription was triggered to overcome the stress induced by cefquinome, and the MRSA1679a showed a great genetic potential to survive in this challenging environment. This study provides a profound understanding of MRSA1679a as a potentially important pathogen and identifies key resistance characteristics of MRSA against cefquinome. Studies should be aimed to demonstrate multidrug resistance mechanisms of virulent strains by exposing to different antibiotic combinations.
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9
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Pipatthana M, Harnvoravongchai P, Pongchaikul P, Likhitrattanapisal S, Phanchana M, Chankhamhaengdecha S, Janvilisri T. The repertoire of ABC proteins in Clostridioides difficile. Comput Struct Biotechnol J 2021; 19:2905-2920. [PMID: 34094001 PMCID: PMC8144104 DOI: 10.1016/j.csbj.2021.05.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/02/2021] [Accepted: 05/05/2021] [Indexed: 11/07/2022] Open
Abstract
ABC transporters transport substrates across membranes driven by ATP hydrolysis. ABC proteins of C. difficile 630 can be classified into 12 sub-families. Most NPs are found within sub-families involving in drug export. Most core NPs in C. difficile are associated with drug efflux system. ABC proteins in sub-families 3, 6, 7, and 9 may participate in drug resistance.
ATP-binding cassette (ABC) transporters belong to one of the largest membrane protein superfamilies, which function in translocating substrates across biological membranes using energy from ATP hydrolysis. Currently, the classification of ABC transporters in Clostridioides difficile is not complete. Therefore, the sequence-function relationship of all ABC proteins encoded within the C. difficile genome was analyzed. Identification of protein domains associated with the ABC system in the C. difficile 630 reference genome revealed 226 domains: 97 nucleotide-binding domains (NBDs), 98 transmembrane domains (TMDs), 30 substrate-binding domains (SBDs), and one domain with features of an adaptor protein. Gene organization and transcriptional unit analyses indicated the presence of 78 ABC systems comprising 28 importers and 50 exporters. Based on NBD sequence similarity, ABC transporters were classified into 12 sub-families according to their substrates. Interestingly, all ABC exporters, accounting for 64% of the total ABC systems, are involved in antibiotic resistance. Based on analysis of ABC proteins from 49 C. difficile strains, the majority of core NBDs are predicted to be involved in multidrug resistance systems, consistent with the ability of this organism to survive exposure to an array of antibiotics. Our findings herein provide another step toward a better understanding of the function and evolutionary relationships of ABC proteins in this pathogen.
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Affiliation(s)
- Methinee Pipatthana
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | - Pisut Pongchaikul
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakarn, Thailand
| | - Somsak Likhitrattanapisal
- Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Matthew Phanchana
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Tavan Janvilisri
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
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10
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Dutta D, VandeHaar P, Fritsche LG, Zöllner S, Boehnke M, Scott LJ, Lee S. A powerful subset-based method identifies gene set associations and improves interpretation in UK Biobank. Am J Hum Genet 2021; 108:669-681. [PMID: 33730541 DOI: 10.1016/j.ajhg.2021.02.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 02/19/2021] [Indexed: 02/06/2023] Open
Abstract
Tests of association between a phenotype and a set of genes in a biological pathway can provide insights into the genetic architecture of complex phenotypes beyond those obtained from single-variant or single-gene association analysis. However, most existing gene set tests have limited power to detect gene set-phenotype association when a small fraction of the genes are associated with the phenotype and cannot identify the potentially "active" genes that might drive a gene set-based association. To address these issues, we have developed Gene set analysis Association Using Sparse Signals (GAUSS), a method for gene set association analysis that requires only GWAS summary statistics. For each significantly associated gene set, GAUSS identifies the subset of genes that have the maximal evidence of association and can best account for the gene set association. Using pre-computed correlation structure among test statistics from a reference panel, our p value calculation is substantially faster than other permutation- or simulation-based approaches. In simulations with varying proportions of causal genes, we find that GAUSS effectively controls type 1 error rate and has greater power than several existing methods, particularly when a small proportion of genes account for the gene set signal. Using GAUSS, we analyzed UK Biobank GWAS summary statistics for 10,679 gene sets and 1,403 binary phenotypes. We found that GAUSS is scalable and identified 13,466 phenotype and gene set association pairs. Within these gene sets, we identify an average of 17.2 (max = 405) genes that underlie these gene set associations.
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Affiliation(s)
- Diptavo Dutta
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Peter VandeHaar
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lars G Fritsche
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sebastian Zöllner
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Michael Boehnke
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Laura J Scott
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Seunggeun Lee
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, USA; Graduate School of Data Science, Seoul National University, Seoul 08826, Republic of Korea.
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11
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The Cell Envelope Stress Response of Bacillus subtilis towards Laspartomycin C. Antibiotics (Basel) 2020; 9:antibiotics9110729. [PMID: 33114184 PMCID: PMC7690785 DOI: 10.3390/antibiotics9110729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 11/17/2022] Open
Abstract
Cell wall antibiotics are important tools in our fight against Gram-positive pathogens, but many strains become increasingly resistant against existing drugs. Laspartomycin C is a novel antibiotic that targets undecaprenyl phosphate (UP), a key intermediate in the lipid II cycle of cell wall biosynthesis. While laspartomycin C has been thoroughly examined biochemically, detailed knowledge about potential resistance mechanisms in bacteria is lacking. Here, we use reporter strains to monitor the activity of central resistance modules in the Bacillus subtilis cell envelope stress response network during laspartomycin C attack and determine the impact on the resistance of these modules using knock-out strains. In contrast to the closely related UP-binding antibiotic friulimicin B, which only activates ECF σ factor-controlled stress response modules, we find that laspartomycin C additionally triggers activation of stress response systems reacting to membrane perturbation and blockage of other lipid II cycle intermediates. Interestingly, none of the studied resistance genes conferred any kind of protection against laspartomycin C. While this appears promising for therapeutic use of laspartomycin C, it raises concerns that existing cell envelope stress response networks may already be poised for spontaneous development of resistance during prolonged or repeated exposure to this new antibiotic.
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12
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Kee PS, Chin PKL, Kennedy MA, Maggo SDS. Pharmacogenetics of Statin-Induced Myotoxicity. Front Genet 2020; 11:575678. [PMID: 33193687 PMCID: PMC7596698 DOI: 10.3389/fgene.2020.575678] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/26/2020] [Indexed: 12/15/2022] Open
Abstract
Statins, a class of lipid-lowering medications, have been a keystone treatment in cardiovascular health. However, adverse effects associated with statin use impact patient adherence, leading to statin discontinuation. Statin-induced myotoxicity (SIM) is one of the most common adverse effects, prevalent across all ages, genders, and ethnicities. Although certain demographic cohorts carry a higher risk, the impaired quality of life attributed to SIM is significant. The pathogenesis of SIM remains to be fully elucidated, but it is clear that SIM is multifactorial. These factors include drug-drug interactions, renal or liver dysfunction, and genetics. Genetic-inferred risk for SIM was first reported by a landmark genome-wide association study, which reported a higher risk of SIM with a polymorphism in the SLCO1B1 gene. Since then, research associating genetic factors with SIM has expanded widely and has become one of the foci in the field of pharmacogenomics. This review provides an update on the genetic risk factors associated with SIM.
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Affiliation(s)
- Ping Siu Kee
- Gene Structure and Function Laboratory, Carney Centre for Pharmacogenomics, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | | | - Martin A. Kennedy
- Gene Structure and Function Laboratory, Carney Centre for Pharmacogenomics, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Simran D. S. Maggo
- Gene Structure and Function Laboratory, Carney Centre for Pharmacogenomics, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
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13
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Hao P, Xia J, Liu J, Di Donato M, Pakula K, Bailly A, Jasinski M, Geisler M. Auxin-transporting ABC transporters are defined by a conserved D/E-P motif regulated by a prolylisomerase. J Biol Chem 2020; 295:13094-13105. [PMID: 32699109 PMCID: PMC7489919 DOI: 10.1074/jbc.ra120.014104] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/16/2020] [Indexed: 12/15/2022] Open
Abstract
The plant hormone auxin must be transported throughout plants in a cell-to-cell manner to affect its various physiological functions. ABCB transporters are critical for this polar auxin distribution, but the regulatory mechanisms controlling their function is not fully understood. The auxin transport activity of ABCB1 was suggested to be regulated by a physical interaction with FKBP42/Twisted Dwarf1 (TWD1), a peptidylprolyl cis-trans isomerase (PPIase), but all attempts to demonstrate such a PPIase activity by TWD1 have failed so far. By using a structure-based approach, we identified several surface-exposed proline residues in the nucleotide binding domain and linker of Arabidopsis ABCB1, mutations of which do not alter ABCB1 protein stability or location but do affect its transport activity. P1008 is part of a conserved signature D/E-P motif that seems to be specific for auxin-transporting ABCBs, which we now refer to as ATAs. Mutation of the acidic residue also abolishes auxin transport activity by ABCB1. All higher plant ABCBs for which auxin transport has been conclusively proven carry this conserved motif, underlining its predictive potential. Introduction of this D/E-P motif into malate importer, ABCB14, increases both its malate and its background auxin transport activity, suggesting that this motif has an impact on transport capacity. The D/E-P1008 motif is also important for ABCB1-TWD1 interactions and activation of ABCB1-mediated auxin transport by TWD1. In summary, our data imply a new function for TWD1 acting as a putative activator of ABCB-mediated auxin transport by cis-trans isomerization of peptidyl-prolyl bonds.
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Affiliation(s)
- Pengchao Hao
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jian Xia
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jie Liu
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Martin Di Donato
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Konrad Pakula
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland; NanoBioMedical Centre, Adam Mickiewicz University, Poznan, Poland
| | - Aurélien Bailly
- Institute for Plant and Microbial Biology, Zurich, Switzerland
| | - Michal Jasinski
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland; Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Poznan, Poland
| | - Markus Geisler
- Department of Biology, University of Fribourg, Fribourg, Switzerland.
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Grechko V, Podolsky D, Cheshchevik V. Identification new potential multidrug resistance proteins of Saccharomyces cerevisiae. J Microbiol Methods 2020; 176:106029. [DOI: 10.1016/j.mimet.2020.106029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/28/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
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15
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Ruiz I, Nevers Q, Hernández E, Ahnou N, Brillet R, Softic L, Donati F, Berry F, Hamadat S, Fourati S, Pawlotsky JM, Ahmed-Belkacem A. MK-571, a Cysteinyl Leukotriene Receptor 1 Antagonist, Inhibits Hepatitis C Virus Replication. Antimicrob Agents Chemother 2020; 64:e02078-19. [PMID: 32179525 PMCID: PMC7269486 DOI: 10.1128/aac.02078-19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 02/20/2020] [Indexed: 12/13/2022] Open
Abstract
The quinoline MK-571 is the most commonly used inhibitor of multidrug resistance protein-1 (MRP-1) but was originally developed as a cysteinyl leukotriene receptor 1 (CysLTR1) antagonist. While studying the modulatory effect of MRP-1 on anti-hepatitis C virus (HCV) direct-acting antiviral (DAA) efficiency, we observed an unexpected anti-HCV effect of compound MK-571 alone. This anti-HCV activity was characterized in Huh7.5 cells stably harboring a subgenomic genotype 1b replicon. A dose-dependent decrease of HCV RNA levels was observed upon MK-571 administration, with a 50% effective concentration (EC50 ± standard deviation) of 9 ± 0.3 μM and a maximum HCV RNA level reduction of approximatively 1 log10 MK-571 also reduced the replication of the HCV full-length J6/JFH1 model in a dose-dependent manner. However, probenecid and apigenin homodimer (APN), two specific inhibitors of MRP-1, had no effect on HCV replication. In contrast, the CysLTR1 antagonist SR2640 increased HCV-subgenomic replicon (SGR) RNA levels in a dose-dependent manner, with a maximum increase of 10-fold. In addition, a combination of natural CysLTR1 agonist (LTD4) or antagonists (zafirlukast, cinalukast, and SR2640) with MK-571 completely reversed its antiviral effect, suggesting its anti-HCV activity is related to CysLTR1 rather to MRP-1 inhibition. In conclusion, we showed that MK-571 inhibits HCV replication in hepatoma cell cultures by acting as a CysLTR1 receptor antagonist, thus unraveling a new host-virus interaction in the HCV life cycle.
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Affiliation(s)
- Isaac Ruiz
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- Department of Hepatology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Quentin Nevers
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Eva Hernández
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Nazim Ahnou
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- National Reference Center for Viral Hepatitis B, C and D, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Rozenn Brillet
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Laurent Softic
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Flora Donati
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- National Reference Center for Viral Hepatitis B, C and D, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Francois Berry
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Sabah Hamadat
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- National Reference Center for Viral Hepatitis B, C and D, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Slim Fourati
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- National Reference Center for Viral Hepatitis B, C and D, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Jean-Michel Pawlotsky
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
- National Reference Center for Viral Hepatitis B, C and D, Department of Virology, Hôpital Henri Mondor, Université Paris-Est, Créteil, France
| | - Abdelhakim Ahmed-Belkacem
- Institut Mondor de Recherche Biomédicale (IMRB), INSERM U955, Team "Viruses, Hepatology, Cancers", Hôpital Henri Mondor, Université Paris-Est, Créteil, France
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16
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Giordano M, Cavallaro U. Different Shades of L1CAM in the Pathophysiology of Cancer Stem Cells. J Clin Med 2020; 9:E1502. [PMID: 32429448 PMCID: PMC7291284 DOI: 10.3390/jcm9051502] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/07/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
L1 cell adhesion molecule (L1CAM) is aberrantly expressed in several tumor types where it is causally linked to malignancy and therapy resistance, acting also as a poor prognosis factor. Accordingly, several approaches have been developed to interfere with L1CAM function or to deliver cytotoxic agents to L1CAM-expressing tumors. Metastatic dissemination, tumor relapse and drug resistance can be fueled by a subpopulation of neoplastic cells endowed with peculiar biological properties that include self-renewal, efficient DNA repair, drug efflux machineries, quiescence, and immune evasion. These cells, known as cancer stem cells (CSC) or tumor-initiating cells, represent, therefore, an ideal target for tumor eradication. However, the molecular and functional traits of CSC have been unveiled only to a limited extent. In this context, it appears that L1CAM is expressed in the CSC compartment of certain tumors, where it plays a causal role in stemness itself and/or in biological processes intimately associated with CSC (e.g., epithelial-mesenchymal transition (EMT) and chemoresistance). This review summarizes the role of L1CAM in cancer focusing on its functional contribution to CSC pathophysiology. We also discuss the clinical usefulness of therapeutic strategies aimed at targeting L1CAM in the context of anti-CSC treatments.
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Affiliation(s)
| | - Ugo Cavallaro
- Unit of Gynaecological Oncology Research, European Institute of Oncology IRCSS, 20128 Milan, Italy;
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17
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Songkiatisak P, Ding F, Cherukuri PK, Xu XHN. Size-Dependent Inhibitory Effects of Antibiotic Nanocarriers on Filamentation of E. coli. NANOSCALE ADVANCES 2020; 2:2135-2145. [PMID: 33791510 PMCID: PMC8009294 DOI: 10.1039/c9na00697d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/30/2020] [Indexed: 06/12/2023]
Abstract
Multidrug membrane transporters exist in both prokaryotic and eukaryotic cells, which causes multidrug resistance (MDR) and urgent need of new and more effective therapeutic agencies. In this study, we used three different sized antibiotic nanocarriers to study their mode of actions and their size-dependent inhibitory effects against Escherichia coli (E. coli). The antibiotic nanocarriers (AgMUNH-Oflx NPs) with 8.6×102, 9.4×103 and 6.5×105 Oflx molecules per nanoparticle (NP) were prepared by functionalizing the Ag NPs (2.4 ± 0.7, 13.0 ± 3.1 and 92.6 ± 4.4 nm) with a monolayer of 11-amino-1-undecanethiol (MUNH2) and covalently linking ofloxacin (Oflx) with the amine group of AgMUNH2 NPs, respectively. We designed a modified cell culture medium for nanocarriers to be stable (non-aggregated) over 18 h of cell culture, which enables us to quantitatively study their size and dose dependent inhibitory effects against E. coli. We found that inhibitory effects of Oflx against E. coli highly depend upon dose of Oflx and size of nanocarriers, showing that the equal amount of Oflx delivered by the largest nanocarriers (92.6 ± 4.4 nm) were the most potent with the lowest minimum inhibitory concentration (MIC50) and created the longest and highest percentage of filamentous cells, while the smallest nanocarriers (2.4 ± 0.7) were the least potent with the highest MIC50 and produced the shortest and lowest percentage of filamentous cells. Interestingly, the same amount of Oflx on 2.4 ± 0.7 nm nanocarriers showed the 2x higher MIC and created the 2x shorter filamentous cells than free Oflx, while the Oflx on 13.0 ± 3.1 and 92.6 ± 4.4 nm nanocarriers exhibited 2x and 6x lower MICs, and produced 2x and 3x longer filamentous cell than free Oflx, respectively. Notably, three sized AgMUNH2 NPs (absence of Oflx) showed negligible inhibitory effects and did not create filamentous cells. The results show that the filamentation of E. coli highly depends upon the sizes of nanocarriers, which leads to the size-dependent inhibitory effects of nanocarriers against E. coli.
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Affiliation(s)
- Preeyaporn Songkiatisak
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Feng Ding
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Pavan Kumar Cherukuri
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
| | - Xiao-Hong Nancy Xu
- Department of Chemistry and Biochemistry, Old Dominion UniversityNorfolkVirginia 23529USAhttp://www.odu.edu/∼xhxu+1 (757) 683 5698+1 (757) 683 5698
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18
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Feng Z, Liu D, Wang L, Wang Y, Zang Z, Liu Z, Song B, Gu L, Fan Z, Yang S, Chen J, Cui Y. A Putative Efflux Transporter of the ABC Family, YbhFSR, in Escherichia coli Functions in Tetracycline Efflux and Na +(Li +)/H + Transport. Front Microbiol 2020; 11:556. [PMID: 32390957 PMCID: PMC7190983 DOI: 10.3389/fmicb.2020.00556] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/16/2020] [Indexed: 12/20/2022] Open
Abstract
ATP-binding cassette transporters are ubiquitous in almost all organisms. The Escherichia coli genome is predicted to encode 69 ABC transporters. Eleven of the ABC transporters are presumed to be exporters, of which seven are possible drug export transporters. There has been minimal research on the function of YbhFSR, which is one of the putative drug resistance exporters. In this study, the ybhF gene of this transporter was characterized. Overexpression and knockout strains of ybhF were constructed. The ATPase activity of YbhF was studied using the malachite green assay, and the efflux abilities of knockout strains were demonstrated by using ethidium bromide (EB) as a substrate. The substrates of YbhFSR efflux, examined with the minimum inhibitory concentration (MIC), were determined to be tetracycline, oxytetracycline, chlortetracycline, doxycycline, EB, and Hoechst33342. Furthermore, tetracycline and EB efflux and accumulation experiments confirmed that the substrates of YbhFSR were tetracyclines and EB. The MIC assay and the fluorescence test results showed that tetracyclines are likely to be the major antibiotic substrate of YbhFSR. The existence of the signature NatA motif suggested that YbhFSR may also function as a Na+/H+ transporter. Overexpression of YbhF in E. coli KNabc lacking crucial Na+/H+ transporters conferred tolerance to NaCl, LiCl, and an alkaline pH. Together, the results showed that YbhFSR exhibited dual functions as a drug efflux pump and a Na+ (Li+)/H+ antiporter.
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Affiliation(s)
- Zhenyue Feng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Defu Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Lizi Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yanhong Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Zhongjing Zang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Zhenhua Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Baifen Song
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Liwei Gu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Zhaowei Fan
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Siyu Yang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Jing Chen
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yudong Cui
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
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19
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Keyvani-Ghamsari S, Khorsandi K, Gul A. Curcumin effect on cancer cells' multidrug resistance: An update. Phytother Res 2020; 34:2534-2556. [PMID: 32307747 DOI: 10.1002/ptr.6703] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/02/2020] [Accepted: 04/02/2020] [Indexed: 12/11/2022]
Abstract
Chemotherapy is one of the main methods for cancer treatment. However, despite many advances in the design of anticancer drugs, their efficiency is limited due to their high toxicity and resistance of cells to chemotherapeutic drugs. In order to improve the cancer therapy, it is essential to use the compounds that can overcome drug resistance and increase treatment efficiency. Researchers have studied the effects of natural compounds for the controlling various drug resistance mechanisms. Curcumin is a natural phenolic compound which shows potent anticancer activities in different tumors, alone or as an adjuvant with other antitumor drugs to prevent or inhibit the survival and cancer progression by various mechanisms. The role of curcumin in overcoming drug resistance was followed by reviewing different applications of curcumin in cancer therapy. Afterward, the clinical impacts of curcumin, role of curcumin in decreasing drug resistance in different cancer cells and its mechanisms were discussed. It has been demonstrated that curcumin regulates signaling pathways in cancer cells, reduces the expression of proteins related to drug resistance, and increases the performance of antitumor drugs at various levels. Curcumin reverses multidrug resistance mechanisms and increases sensitivity of resistance cells to chemotherapy. This review mainly focuses on different mechanisms of drug resistance and curcumin as a nontoxic natural substance to eliminate the effects of drug resistance through modulation and controlling cell resistance pathways and eventually suggests curcumin as a potent chemosensitizer in cancers.
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Affiliation(s)
| | - Khatereh Khorsandi
- Department of Photodynamic, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran
| | - Asma Gul
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
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20
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Improvement in the Anti-Tumor Efficacy of Doxorubicin Nanosponges in In Vitro and in Mice Bearing Breast Tumor Models. Cancers (Basel) 2020; 12:cancers12010162. [PMID: 31936526 PMCID: PMC7016577 DOI: 10.3390/cancers12010162] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 12/14/2022] Open
Abstract
Doxorubicin (DOX) is an anthracycline widely used in cancer therapy and in particular in breast cancer treatment. The treatment with DOX appears successful, but it is limited by a severe cardiotoxicity. This work evaluated the in vitro and in vivo anticancer effect of a new formulation of β-cyclodextrin nanosponges containing DOX (BNS-DOX). The BNS-DOX effectiveness was evaluated in human and mouse breast cancer cell lines in vitro in terms of effect on cell growth, cell cycle distribution, and apoptosis induction; and in vivo in BALB-neuT mice developing spontaneous breast cancer in terms of biodistribution, cancer growth inhibition, and heart toxicity. BNS-DOX significantly inhibited cancer cell proliferation, through the induction of apoptosis, with higher efficiency than free DOX. The breast cancer growth in BALB-neuT mice was inhibited by 60% by a BNS-DOX dose five times lower than the DOX therapeutic dose, with substantial reduction of tumor neoangiogenesis and lymphangiogenesis. Biodistribution after BNS-DOX treatment revealed a high accumulation of DOX in the tumor site and a low accumulation in the hearts of mice. Results indicated that use of BNS may be an efficient strategy to deliver DOX in the treatment of breast cancer, since it improves the anti-cancer effectiveness and reduces cardiotoxicity.
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21
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Chen W, Liu I, Tomiyasu H, Lee J, Cheng C, Liao AT, Liu B, Liu C, Lin C. Imatinib enhances the anti-tumour effect of doxorubicin in canine B-cell lymphoma cell line. Vet J 2019; 254:105398. [PMID: 31836165 DOI: 10.1016/j.tvjl.2019.105398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 10/03/2019] [Accepted: 10/19/2019] [Indexed: 01/24/2023]
Abstract
Canine lymphoma is one of the most common malignant tumours occurring in dogs and has a high incidence worldwide. Despite advances in cancer prevention, the treatment of neoplastic diseases still requires improvement. Some cancer cells may resist the effect of chemotherapeutic agents by up-regulating drug transporters leading to increased drug efflux, resulting in intrinsic or acquired drug resistance, which is a mechanism commonly seen in doxorubicin-resistant tumour cells. In this study, canine B-cell lymphoma cell line CLBL1-8.0, a doxorubicin-resistant B cell lymphoma cell line derived from CLBL-1 by increasing the doxorubicin concentration during culturing, exhibited high expression of P-glycoprotein (P-gp, ATP-binding cassette sub-family B member 1 [ABCB1]). These proteins are commonly involved in cancer cell resistance to doxorubicin. Imatinib, a tyrosine kinase inhibitor significantly potentiated the sensitivity of doxorubicin in P-gp-overexpressing doxorubicin-resistant cells. Moreover, a combination of these two drugs may increase the retention of doxorubicin by decreasing the efflux of doxorubicin without affecting P-gp protein overexpression. In conclusion, imatinib reversed doxorubicin resistance by decreasing drug efflux in P-gp-overexpressing doxorubicin-resistant canine lymphoma cells. These results suggest that combining doxorubicin, one of the most widely used chemotherapeutic drugs in the treatment of canine lymphoma, with imatinib might potentially overcome doxorubicin resistance in a clinical setting.
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Affiliation(s)
- W Chen
- Institute of Molecular and Comparative Pathobiology, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - I Liu
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - H Tomiyasu
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - J Lee
- Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - C Cheng
- Institute of Molecular and Comparative Pathobiology, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - A T Liao
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - B Liu
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - C Liu
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - C Lin
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, 1 Sec 4 Roosevelt Road, Taipei, 10617, Taiwan.
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22
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Amawi H, Sim HM, Tiwari AK, Ambudkar SV, Shukla S. ABC Transporter-Mediated Multidrug-Resistant Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1141:549-580. [PMID: 31571174 DOI: 10.1007/978-981-13-7647-4_12] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
ATP-binding cassette (ABC) transporters are involved in active pumping of many diverse substrates through the cellular membrane. The transport mediated by these proteins modulates the pharmacokinetics of many drugs and xenobiotics. These transporters are involved in the pathogenesis of several human diseases. The overexpression of certain transporters by cancer cells has been identified as a key factor in the development of resistance to chemotherapeutic agents. In this chapter, the localization of ABC transporters in the human body, their physiological roles, and their roles in the development of multidrug resistance (MDR) are reviewed. Specifically, P-glycoprotein (P-GP), multidrug resistance-associated proteins (MRPs), and breast cancer resistance protein (BCRP/ABCG2) are described in more detail. The potential of ABC transporters as therapeutic targets to overcome MDR and strategies for this purpose are discussed as well as various explanations for the lack of efficacy of ABC drug transporter inhibitors to increase the efficiency of chemotherapy.
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Affiliation(s)
- Haneen Amawi
- Department of Pharmacy Practice, Faculty of Pharmacy, Yarmouk University, Irbid, Jordan
| | - Hong-May Sim
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy & Pharmaceutical Sciences, University of Toledo, Toledo, OH, USA
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Suneet Shukla
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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23
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Cheung GYC, Fisher EL, McCausland JW, Choi J, Collins JWM, Dickey SW, Otto M. Antimicrobial Peptide Resistance Mechanism Contributes to Staphylococcus aureus Infection. J Infect Dis 2019; 217:1153-1159. [PMID: 29351622 DOI: 10.1093/infdis/jiy024] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 01/16/2018] [Indexed: 12/13/2022] Open
Abstract
Antimicrobial peptides (AMPs) constitute an important part of innate host defense. Possibly limiting the therapeutic potential of AMPs is the fact that bacteria have developed AMP resistance mechanisms during their co-evolution with humans. However, there is no direct evidence that AMP resistance per se is important during an infection. Here we show that the Staphylococcus aureus Pmt ABC transporter defends the bacteria from killing by important human AMPs and elimination by human neutrophils. By showing that Pmt contributes to virulence during skin infection in an AMP-dependent manner, we provide evidence that AMP resistance plays a key role in bacterial infection.
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Affiliation(s)
- Gordon Y C Cheung
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - Emilie L Fisher
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - Joshua W McCausland
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - Justin Choi
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - John W M Collins
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - Seth W Dickey
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
| | - Michael Otto
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryl
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24
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Paškevičiūtė M, Petrikaitė V. Overcoming transporter-mediated multidrug resistance in cancer: failures and achievements of the last decades. Drug Deliv Transl Res 2019; 9:379-393. [PMID: 30194528 DOI: 10.1007/s13346-018-0584-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Multidrug resistance (MDR) is a complex phenomenon caused by numerous reasons in cancer chemotherapy. It is related to the abnormal tumor metabolism, precisely increased glycolysis and lactic acid production, extracellular acidification, and drug efflux caused by transport proteins. There are few strategies to increase drug delivery into cancer cells. One of them is the inhibition of carbonic anhydrases or certain proton transporters that increase extracellular acidity by proton extrusion from the cells. This prevents weakly basic chemotherapeutic drugs from ionization and increases their penetration through the cancer cell membrane. Another approach is the inhibition of MDR proteins that pump the anticancer agents into the extracellular milieu and decrease their intracellular concentration. Physical methods, such as ultrasound-mediated sonoporation, are being developed, as well. To increase the efficacy of sonoporation, various microbubbles are used. Ultrasound causes microbubble cavitation, i.e., periodical pulsation of the microbubble, and destruction which results in formation of temporary pores in the cellular membrane and increased permeabilization to drug molecules. This review summarizes the main approaches to reverse MDR related to the drug penetration along with its applications in preclinical and clinical studies.
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Affiliation(s)
- Miglė Paškevičiūtė
- Department of Drug Chemistry, Faculty of Pharmacy, Lithuanian University of Health Sciences, Sukilėlių Ave. 13, LT-50162, Kaunas, Lithuania
| | - Vilma Petrikaitė
- Department of Drug Chemistry, Faculty of Pharmacy, Lithuanian University of Health Sciences, Sukilėlių Ave. 13, LT-50162, Kaunas, Lithuania. .,Institute of Biotechnology, Vilnius University, Saulėtekio Ave. 7, LT-10257, Vilnius, Lithuania.
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25
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Pereira EJ, Ramaiah N. Chromate detoxification potential of Staphylococcus sp. isolates from an estuary. ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:457-466. [PMID: 30969406 DOI: 10.1007/s10646-019-02038-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/19/2019] [Indexed: 05/14/2023]
Abstract
Chromium (Cr) pollution is an emerging environmental problem. The present study was carried out to isolate Cr-resistant bacteria and characterize their Cr detoxification and resistance ability. Bacteria screened by exposure to chromate (Cr6+) were isolated from Mandovi estuary Goa, India. Two isolates expressed high resistance to Cr6+ (MIC ≥ 300 µg mL-1), Cr3+ (MIC ≥ 900 µg mL-1), other toxic heavy metals and displayed a pattern of resistance to cephalosporins and ß-lactams. Biochemical and 16 S rRNA gene sequence analysis indicated that both isolates tested belonged to the Staphylococcus genus and were closely related to S. saprophyticus and S. arlettae. Designated as strains NIOER176 and NIOER324, batch experiments demonstrated that both removed 100% of 20 and 50 µg mL-1 Cr6+ within 4 and 10 days, respectively. The rate of reduction in both peaked at 0.260 µg mL-1 h-1. ATP-binding cassette (ABC) transporter gene involved in transport of a variety of substrates including efflux of toxicants was present in strain NIOER176. Through SDS-PAGE analysis, whole-cell proteins extracted from both strains indicated chromium-induced specific induction and up-regulation of 24 and 40 kDa proteins. Since bacterial ability to ameliorate Cr6+ is of practical significance, these findings demonstrate strong potential of some estuarine bacteria to detoxify Cr6+ even when its concentrations far exceed the concentrations reported from many hazardous effluents and chromium contaminated natural habitats. Such potential of salt tolerant bacteria would help in Cr6+ bioremediation efforts.
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Affiliation(s)
- Elroy Joe Pereira
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India
| | - Nagappa Ramaiah
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India.
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26
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Emerging Roles of Aryl Hydrocarbon Receptors in the Altered Clearance of Drugs during Chronic Kidney Disease. Toxins (Basel) 2019; 11:toxins11040209. [PMID: 30959953 PMCID: PMC6521271 DOI: 10.3390/toxins11040209] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/12/2019] [Accepted: 04/03/2019] [Indexed: 12/11/2022] Open
Abstract
Chronic kidney disease (CKD) is a major public health problem, since 300,000,000 people in the world display a glomerular filtration rate (GFR) below 60 mL/min/1.73m². Patients with CKD have high rates of complications and comorbidities. Thus, they require the prescription of numerous medications, making the management of patients very complex. The prescription of numerous drugs associated with an altered renal- and non-renal clearance makes dose adjustment challenging in these patients, with frequent drug-related adverse events. However, the mechanisms involved in this abnormal drug clearance during CKD are not still well identified. We propose here that the transcription factor, aryl hydrocarbon receptor, which is the cellular receptor for indolic uremic toxins, could worsen the metabolism and the excretion of drugs in CKD patients.
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Mrp1 is involved in lipid presentation and iNKT cell activation by Streptococcus pneumoniae. Nat Commun 2018; 9:4279. [PMID: 30323255 PMCID: PMC6189046 DOI: 10.1038/s41467-018-06646-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 09/17/2018] [Indexed: 01/17/2023] Open
Abstract
Invariant natural killer T cells (iNKT cells) are activated by lipid antigens presented by CD1d, but the pathway leading to lipid antigen presentation remains incompletely characterized. Here we show a whole-genome siRNA screen to elucidate the CD1d presentation pathway. A majority of gene knockdowns that diminish antigen presentation reduced formation of glycolipid-CD1d complexes on the cell surface, including members of the HOPS and ESCRT complexes, genes affecting cytoskeletal rearrangement, and ABC family transporters. We validated the role in vivo for the multidrug resistance protein 1 (Mrp1) in CD1d antigen presentation. Mrp1 deficiency reduces surface clustering of CD1d, which decreased iNKT cell activation. Infected Mrp1 knockout mice show decreased iNKT cell responses to antigens from Streptococcus pneumoniae and were associated with increased mortality. Our results highlight the unique cellular events involved in lipid antigen presentation and show how modification of this pathway can lead to lethal infection. The CD1d pathway present lipid antigens resulting in the activation of iNKT cells but the complete pathway remains to be fully elucidated. Here, Chandra et al. use an siRNA screen and identify Mrp1 as crucial for CD1d lipid presentation and activation of iNKT in the context of Streptococcus pneumoniae infection.
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28
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Zhou L, Qiu T, Lv F, Liu L, Ying J, Wang S. Self-Assembled Nanomedicines for Anticancer and Antibacterial Applications. Adv Healthc Mater 2018; 7:e1800670. [PMID: 30080319 DOI: 10.1002/adhm.201800670] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/03/2018] [Indexed: 01/28/2023]
Abstract
Self-assembly strategies have been widely applied in the nanomedicine field, which provide a convenient approach for building various structures for delivery carriers. When cooperating with biomolecules, self-assembly systems have significant influence on the cell activity and life process and could be used for regulating nanodrug activity. In this review, self-assembled nanomedicines are introduced, including materials, encapsulation, and releasing strategies, where self-assembly strategies are involved. Furthermore, as a promising and emerging area for nanomedicine, in situ self-assembly of anticancer drugs and supramolecular antibiotic switches is also discussed about how to regulate drug activity. Selective pericellular assembly can block mass transformation of cancer cells inducing cell apoptosis, and the intracellular assembly can either cause cell death or effectively avoid drug elimination from cytosol of cancer cells because of the assembly-induced retention (AIR) effect. Host-guest interactions of drug and competitive molecules offer reversible regulations of antibiotic activity, which can reduce drug-resistance and inhibit the generation of drug-resistant bacteria. Finally, the challenges and development trend in the field are discussed.
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Affiliation(s)
- Lingyun Zhou
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- College of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Tian Qiu
- Department of Pathology; National Cancer Center/National Clinical Research Center for; Cancer/Cancer Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100021 P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Jianming Ying
- Department of Pathology; National Cancer Center/National Clinical Research Center for; Cancer/Cancer Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100021 P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- College of Chemistry; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
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29
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Pazinato J, Cruz OM, Naidek KP, Pires AR, Westphal E, Gallardo H, Baubichon-Cortay H, Rocha ME, Martinez GR, Winnischofer SM, Di Pietro A, Winnischofer H. Cytotoxicity of η-areneruthenium-based molecules to glioblastoma cells and their recognition by multidrug ABC transporters. Eur J Med Chem 2018; 148:165-177. [DOI: 10.1016/j.ejmech.2018.02.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/06/2018] [Accepted: 02/09/2018] [Indexed: 01/16/2023]
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30
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Tindall SM, Vallières C, Lakhani DH, Islahudin F, Ting KN, Avery SV. Heterologous Expression of a Novel Drug Transporter from the Malaria Parasite Alters Resistance to Quinoline Antimalarials. Sci Rep 2018; 8:2464. [PMID: 29410428 PMCID: PMC5802821 DOI: 10.1038/s41598-018-20816-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 01/22/2018] [Indexed: 12/15/2022] Open
Abstract
Antimalarial drug resistance hampers effective malaria treatment. Critical SNPs in a particular, putative amino acid transporter were recently linked to chloroquine (CQ) resistance in malaria parasites. Here, we show that this conserved protein (PF3D7_0629500 in Plasmodium falciparum; AAT1 in P. chabaudi) is a structural homologue of the yeast amino acid transporter Tat2p, which is known to mediate quinine uptake and toxicity. Heterologous expression of PF3D7_0629500 in yeast produced CQ hypersensitivity, coincident with increased CQ uptake. PF3D7_0629500-expressing cultures were also sensitized to related antimalarials; amodiaquine, mefloquine and particularly quinine. Drug sensitivity was reversed by introducing a SNP linked to CQ resistance in the parasite. Like Tat2p, PF3D7_0629500-dependent quinine hypersensitivity was suppressible with tryptophan, consistent with a common transport mechanism. A four-fold increase in quinine uptake by PF3D7_0629500 expressing cells was abolished by the resistance SNP. The parasite protein localised primarily to the yeast plasma membrane. Its expression varied between cells and this heterogeneity was used to show that high-expressing cell subpopulations were the most drug sensitive. The results reveal that the PF3D7_0629500 protein can determine the level of sensitivity to several major quinine-related antimalarials through an amino acid-inhibitable drug transport function. The potential clinical relevance is discussed.
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Affiliation(s)
- Sarah M Tindall
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Cindy Vallières
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Dev H Lakhani
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Farida Islahudin
- Faculty of Pharmacy, Universiti Kebangsaan, Kuala Lumpur, 50300, Malaysia
| | - Kang-Nee Ting
- Department of Biomedical Sciences, University of Nottingham Malaysia Campus, Semenyih, Malaysia
| | - Simon V Avery
- School of Life Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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31
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Jun D, Minic Z, Bhat SV, Vanderlinde EM, Yost CK, Babu M, Dahms TES. Metabolic Adaptation of a C-Terminal Protease A-Deficient Rhizobium leguminosarum in Response to Loss of Nutrient Transport. Front Microbiol 2018; 8:2617. [PMID: 29354107 PMCID: PMC5758756 DOI: 10.3389/fmicb.2017.02617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/15/2017] [Indexed: 11/13/2022] Open
Abstract
Post-translational modification expands the functionality of the proteome beyond genetic encoding, impacting many cellular processes. Cleavage of the carboxyl terminus is one of the many different ways proteins can be modified for functionality. Gel-electrophoresis and mass spectrometric-based techniques were used to identify proteins impacted by deficiency of a C-terminal protease, CtpA, in Rhizobium leguminosarum bv. viciae 3841. Predicted CtpA substrates from 2D silver stained gels were predominantly outer membrane and transport proteins. Proteins with altered abundance in the wild type and ctpA (RL4692) mutant, separated by 2D difference gel electrophoresis, were selected for analysis by mass spectrometry. Of those identified, 9 were the periplasmic solute-binding components of ABC transporters, 5 were amino acid metabolic enzymes, 2 were proteins involved in sulfur metabolism, and 1 each was related to carbon metabolism, protein folding and signal transduction. Alterations to ABC-binding-cassette transporters, nutrient uptake efficiency and to amino acid metabolism indicated an impact on amino acid metabolism and transport for the ctpA mutant, which was validated by measured amino acid levels.
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Affiliation(s)
- Dong Jun
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Zoran Minic
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Supriya V. Bhat
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Elizabeth M. Vanderlinde
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
- Department of Biology, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Chris K. Yost
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Mohan Babu
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Tanya E. S. Dahms
- Department of Chemistry and Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
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32
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Shafei A, El-Bakly W, Sobhy A, Wagdy O, Reda A, Aboelenin O, Marzouk A, El Habak K, Mostafa R, Ali MA, Ellithy M. A review on the efficacy and toxicity of different doxorubicin nanoparticles for targeted therapy in metastatic breast cancer. Biomed Pharmacother 2017; 95:1209-1218. [PMID: 28931213 DOI: 10.1016/j.biopha.2017.09.059] [Citation(s) in RCA: 195] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/04/2017] [Accepted: 09/12/2017] [Indexed: 12/28/2022] Open
Abstract
In metastatic breast cancer (MBC), the conventional doxorubicin (DOX) has various problems due to lack of selectivity with subsequent therapeutic failure and adverse effects. DOX- induced cardiotoxicity is a major problem that necessitates the presence of new forms to decrease the risk of associated morbidity. Nanoparticles (NPs) are considered an important approach to selectively increase drug accumulation inside tumor cells and thus decreasing the associated side effects. Tumor cells develop resistance to chemotherapeutic agents through multiple mechanisms, one of which is over expression of efflux transporters. Various NPs have been investigated to overcome efflux mediated resistance. To date, only liposomal doxorubicin (LD) and pegylated liposomal doxorubicin (PLD) have entered phase II and III clinical trials and FDA- approved for clinical use in MBC. This review addresses the effects of LD and PLD on the hematological and palmar-plantar erythrodysesthesia (PPE) in anthracycline naïve and pretreated MBC patients. For evidence, studies to be included in this review were identified through PubMed, Cochrane and Google scholar databases. The results derived from: four phase III clinical trials that compared LD with the conventional DOX in naïve MBC patients, and ten non-comparative clinical trials investigated LD and PLD as monotherapy or combination in pretreated MBC. This work confirmed the cardiac tolerability profile of LD and PLD versus DOX, while hematological and skin toxicities were more common. Other DOX-NPs in preclinical trials were discussed in a chronological order. Finally, the modern preclinical development framework for DOX includes exosomal DOX (exo-DOX). Exosomal NPs are non-toxic, non-immunogenic, and can be engineered to have high cargo loading capacity and targeting specificity. These NPs have not been investigated clinically. Our study shows that the full clinical potentiality of DOX-NPs remains to be addressed to move the field forward.
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Affiliation(s)
- Ayman Shafei
- Biomedical Research Department, Armed Forces College of Medicine, Cairo, Egypt
| | - Wesam El-Bakly
- Pharmacology Department, Faculty of Medicine, Ain Shams University, Egypt.
| | | | | | | | | | | | | | - Randa Mostafa
- Biomedical Research Department, Armed Forces College of Medicine, Cairo, Egypt
| | - Mahmoud A Ali
- Biomedical Research Department, Armed Forces College of Medicine, Cairo, Egypt
| | - Mahmoud Ellithy
- Clinical Oncology Department, Faculty of Medicine, Ain Shams University, Egypt
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33
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BCRP expression in schwannoma, plexiform neurofibroma and MPNST. Oncotarget 2017; 8:88751-88759. [PMID: 29179472 PMCID: PMC5687642 DOI: 10.18632/oncotarget.21075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/17/2017] [Indexed: 01/10/2023] Open
Abstract
Background peripheral nerve sheath tumors comprise a broad spectrum of neoplasms. Vestibular schwannomas and plexiform neurofibromas are symptomatic albeit benign, but a subset of the latter pre-malignant lesions will transform to malignant peripheral nerve sheath tumors (MPNST). Surgery and radiotherapy are the primary strategies to treat these tumors. Intrinsic resistance to drug therapy characterizes all three tumor subtypes. The breast cancer resistance protein BCRP is a transmembrane efflux transporter considered to play a key role in various biological barriers such as the blood brain barrier. At the same time it is associated with drug resistance in various tumors. Its potential role in drug resistant tumors of the peripheral nervous system is largely unknown. Objective to assess if BCRP is expressed in vestibular schwannomas, plexiform neurofibromas and MPNST. Material and methods immunohistochemical staining for BCRP was performed on a tissue microarray composed out of 22 vestibular schwannomas, 10 plexiform neurofibromas and 18 MPNSTs. Results sixteen out of twenty-two vestibular schwannomas (73%), nine out of ten plexiform neurofibromas (90%) and six out of eighteen MPNST (33%) expressed BCRP in the vasculature. Tumor cells were negative. Conclusion BCRP is present in the vasculature of vestibular schwannomas, plexiform neurofibromas and MPSNT. Therefore, it may reduce the drug exposure of underlying tumor tissues and potentially cause failure of drug therapy.
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Jo DH, Lee K, Kim JH, Jun HO, Kim Y, Cho YL, Yu YS, Min JK, Kim JH. L1 increases adhesion-mediated proliferation and chemoresistance of retinoblastoma. Oncotarget 2017; 8:15441-15452. [PMID: 28061460 PMCID: PMC5362498 DOI: 10.18632/oncotarget.14487] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 12/13/2016] [Indexed: 01/07/2023] Open
Abstract
Retinoblastoma is the most common intraocular cancer in children, affecting 1/20,000 live births. Currently, children with retinoblastoma were treated with chemotherapy using drugs such as carboplatin, vincristine, and etoposide. Unfortunately, if conventional treatment fails, the affected eyes should be removed to prevent extension into adjacent tissues and metastasis. This study is to investigate the roles of L1 in adhesion-mediated proliferation and chemoresistance of retinoblastoma. L1 was differentially expressed in 30 retinoblastoma tissues and 2 retinoblastoma cell lines. Furthermore, the proportions of L1-positive cells in retinoblastoma tumors were negatively linked with the number of Flexner-Wintersteiner rosettes, a characteristic of differentiated retinoblastoma tumors, in each tumor sample. Following in vitro experiments using L1-deleted and -overexpressing cells showed that L1 increased adhesion-mediated proliferation of retinoblastoma cells via regulation of cell cycle-associated proteins with modulation of Akt, extracellular signal-regulated kinase, and p38 pathways. In addition, L1 increased resistance against carboplatin, vincristine, and esoposide through up-regulation of apoptosis- and multidrug resistance-related genes. In vivo tumor formation and chemoresistance were also positively linked with the levels of L1 in an orthotopic transplantation model in mice. In this manner, L1 increases adhesion-mediated proliferation and chemoresistance of retinoblastoma. Targeted therapy to L1 might be effective in the treatment of retinoblastoma tumors, especially which rapidly proliferate and demonstrate resistance to conventional chemotherapeutic drugs.
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Affiliation(s)
- Dong Hyun Jo
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Kyungmin Lee
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Biomolecular Science, University of Science & Technology, Daejeon, Republic of Korea
| | - Jin Hyoung Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Hyoung Oh Jun
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Younghoon Kim
- Department of Pathology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Young-Lai Cho
- Department of Chemistry, Dongguk University, Seoul, Republic of Korea
| | - Young Suk Yu
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Biomolecular Science, University of Science & Technology, Daejeon, Republic of Korea
| | - Jeong Hun Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
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35
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Uppal K, Salinas JL, Monteiro WM, Val F, Cordy RJ, Liu K, Melo GC, Siqueira AM, Magalhaes B, Galinski MR, Lacerda MVG, Jones DP. Plasma metabolomics reveals membrane lipids, aspartate/asparagine and nucleotide metabolism pathway differences associated with chloroquine resistance in Plasmodium vivax malaria. PLoS One 2017; 12:e0182819. [PMID: 28813452 PMCID: PMC5559093 DOI: 10.1371/journal.pone.0182819] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 07/25/2017] [Indexed: 11/18/2022] Open
Abstract
Background Chloroquine (CQ) is the main anti-schizontocidal drug used in the treatment of uncomplicated malaria caused by Plasmodium vivax. Chloroquine resistant P. vivax (PvCR) malaria in the Western Pacific region, Asia and in the Americas indicates a need for biomarkers of resistance to improve therapy and enhance understanding of the mechanisms associated with PvCR. In this study, we compared plasma metabolic profiles of P. vivax malaria patients with PvCR and chloroquine sensitive parasites before treatment to identify potential molecular markers of chloroquine resistance. Methods An untargeted high-resolution metabolomics analysis was performed on plasma samples collected in a malaria clinic in Manaus, Brazil. Male and female patients with Plasmodium vivax were included (n = 46); samples were collected before CQ treatment and followed for 28 days to determine PvCR, defined as the recurrence of parasitemia with detectable plasma concentrations of CQ ≥100 ng/dL. Differentially expressed metabolic features between CQ-Resistant (CQ-R) and CQ-Sensitive (CQ-S) patients were identified using partial least squares discriminant analysis and linear regression after adjusting for covariates and multiple testing correction. Pathway enrichment analysis was performed using Mummichog. Results Linear regression and PLS-DA methods yielded 69 discriminatory features between CQ-R and CQ-S groups, with 10-fold cross-validation classification accuracy of 89.6% using a SVM classifier. Pathway enrichment analysis showed significant enrichment (p<0.05) of glycerophospholipid metabolism, glycosphingolipid metabolism, aspartate and asparagine metabolism, purine and pyrimidine metabolism, and xenobiotics metabolism. Glycerophosphocholines levels were significantly lower in the CQ-R group as compared to CQ-S patients and also to independent control samples. Conclusions The results show differences in lipid, amino acids, and nucleotide metabolism pathways in the plasma of CQ-R versus CQ-S patients prior to antimalarial treatment. Metabolomics phenotyping of P. vivax samples from patients with well-defined clinical CQ-resistance is promising for the development of new tools to understand the biological process and to identify potential biomarkers of PvCR.
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Affiliation(s)
- Karan Uppal
- Clinical Biomarkers Laboratory, Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia, United States of America
- Malaria Host–Pathogen Interaction Center, Atlanta, Georgia, United States of America
- * E-mail: ;
| | - Jorge L. Salinas
- Malaria Host–Pathogen Interaction Center, Atlanta, Georgia, United States of America
- International Center for Malaria Research, Education and Development, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road, Atlanta, Georgia, United States of America
- Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Wuelton M. Monteiro
- Universidade do Estado do Amazonas, Manaus, Amazonas, Brazil
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Amazonas, Brazil
| | - Fernando Val
- Universidade do Estado do Amazonas, Manaus, Amazonas, Brazil
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Amazonas, Brazil
| | - Regina J. Cordy
- Malaria Host–Pathogen Interaction Center, Atlanta, Georgia, United States of America
- International Center for Malaria Research, Education and Development, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road, Atlanta, Georgia, United States of America
| | - Ken Liu
- Clinical Biomarkers Laboratory, Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Gisely C. Melo
- Universidade do Estado do Amazonas, Manaus, Amazonas, Brazil
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Amazonas, Brazil
| | - Andre M. Siqueira
- Instituto Nacional de Infectologia Evandro Chagas (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Mary R. Galinski
- Malaria Host–Pathogen Interaction Center, Atlanta, Georgia, United States of America
- International Center for Malaria Research, Education and Development, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road, Atlanta, Georgia, United States of America
- Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Marcus V. G. Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Amazonas, Brazil
- Instituto Leônidas & Maria Deane (FIOCRUZ), Manaus, Amazonas, Brazil
- * E-mail: ;
| | - Dean P. Jones
- Clinical Biomarkers Laboratory, Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia, United States of America
- Malaria Host–Pathogen Interaction Center, Atlanta, Georgia, United States of America
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Amawi H, Hussein NA, Karthikeyan C, Manivannan E, Wisner A, Williams FE, Samuel T, Trivedi P, Ashby CR, Tiwari AK. HM015k, a Novel Silybin Derivative, Multi-Targets Metastatic Ovarian Cancer Cells and Is Safe in Zebrafish Toxicity Studies. Front Pharmacol 2017; 8:498. [PMID: 28824426 PMCID: PMC5539246 DOI: 10.3389/fphar.2017.00498] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 07/13/2017] [Indexed: 12/18/2022] Open
Abstract
This study was designed to determine the in vitro mechanisms by which the novel silybin derivative, (E)-3-(3-(benzyloxy) phenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one (HM015k or 15k), produces its anticancer efficacy in ovarian cancer cells. Compound 15k induced apoptosis in ovarian cancer cells in a time-dependent manner by significantly upregulating the expression of Bax and Bak and downregulating the expression of Bcl-2. Interestingly, 15k induced the cleavage of Bax p21 into its more efficacious cleaved form, Bax p18. In addition, caspase 3 and caspase 9 were cleaved to their active forms, inducing the cleavage of poly ADP ribose polymerase (PARP) and β-catenin. Furthermore, in OV2008 cells, 15k induced significant cleavage in nuclear β-catenin to primarily inactive fragments of lower molecular weight. Furthermore, 15k reversed the metastatic potential of OV2008 cells by inhibiting their migration and invasiveness. The mesenchymal phenotype in OV2008 was reversed by 15k, causing cells to be rounder with epithelial-like phenotypes. The 15k-induced reversal was further confirmed by significant upregulation of the E-cadherin expression, an epithelial marker, while N-cadherin, a mesenchymal marker, was downregulated in OV2008 cells. Compound 15k inhibited the expression of the oncogenic c-Myc protein, downregulated proteins DVL3 and DVL2 and significantly upregulated cyclin B1. Also, 15k significantly downregulated the expression levels of ABCG2 and ABCB1 transporters in resistant ABCG2 overexpressing H460/MX20 and resistant ABCB1 overexpressing MDCK/MDR1 cells, respectively. Finally, 15k was safe in zebrafish in vivo model at concentrations up to 10 μM and induced no major toxicities in cardiac, morphology and swimming position parameters. Overall, 15k is a multi-targeted inhibitor with efficacy against metastatic and resistant ovarian cancer. Future in vivo studies will be conducted to determine the efficacy of 15k in tumor-bearing animals.
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Affiliation(s)
- Haneen Amawi
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of ToledoToledo, OH, United States
| | - Noor A Hussein
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of ToledoToledo, OH, United States
| | | | | | - Alexander Wisner
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of ToledoToledo, OH, United States
| | - Frederick E Williams
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of ToledoToledo, OH, United States
| | - Temesgen Samuel
- Department of Pathobiology, School of Veterinary Medicine, Tuskegee UniversityTuskegee, AL, United States
| | - Piyush Trivedi
- School of Pharmaceutical Sciences, Rajiv Gandhi Proudyogiki VishwavidyalayaBhopal, India
| | - Charles R Ashby
- Pharmaceutical Sciences, College of Pharmacy, St. John's University QueensNew York, NY, United States
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of ToledoToledo, OH, United States
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Dewanjee S, Dua TK, Bhattacharjee N, Das A, Gangopadhyay M, Khanra R, Joardar S, Riaz M, Feo VD, Zia-Ul-Haq M. Natural Products as Alternative Choices for P-Glycoprotein (P-gp) Inhibition. Molecules 2017; 22:molecules22060871. [PMID: 28587082 PMCID: PMC6152721 DOI: 10.3390/molecules22060871] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 11/16/2022] Open
Abstract
Multidrug resistance (MDR) is regarded as one of the bottlenecks of successful clinical treatment for numerous chemotherapeutic agents. Multiple key regulators are alleged to be responsible for MDR and making the treatment regimens ineffective. In this review, we discuss MDR in relation to P-glycoprotein (P-gp) and its down-regulation by natural bioactive molecules. P-gp, a unique ATP-dependent membrane transport protein, is one of those key regulators which are present in the lining of the colon, endothelial cells of the blood brain barrier (BBB), bile duct, adrenal gland, kidney tubules, small intestine, pancreatic ducts and in many other tissues like heart, lungs, spleen, skeletal muscles, etc. Due to its diverse tissue distribution, P-gp is a novel protective barrier to stop the intake of xenobiotics into the human body. Over-expression of P-gp leads to decreased intracellular accretion of many chemotherapeutic agents thus assisting in the development of MDR. Eventually, the effectiveness of these drugs is decreased. P-gp inhibitors act by altering intracellular ATP levels which are the source of energy and/or by affecting membrane contours to increase permeability. However, the use of synthetic inhibitors is known to cause serious toxicities. For this reason, the search for more potent and less toxic P-gp inhibitors of natural origin is underway. The present review aims to recapitulate the research findings on bioactive constituents of natural origin with P-gp inhibition characteristics. Natural bioactive constituents with P-gp modulating effects offer great potential for semi-synthetic modification to produce new scaffolds which could serve as valuable investigative tools to recognize the function of complex ABC transporters apart from evading the systemic toxicities shown by synthetic counterparts. Despite the many published scientific findings encompassing P-gp inhibitors, however, this article stand alones because it provides a vivid picture to the readers pertaining to Pgp inhibitors obtained from natural sources coupled with their mode of action and structures. It provides first-hand information to the scientists working in the field of drug discovery to further synthesise and discover new P-gp inhibitors with less toxicity and more efficacies.
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Affiliation(s)
- Saikat Dewanjee
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India.
| | - Tarun K Dua
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India.
| | - Niloy Bhattacharjee
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India.
| | - Anup Das
- Department of Pharmaceutical Technology, ADAMAS University, Barasat, Kolkata 700126, India.
| | | | - Ritu Khanra
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India.
| | - Swarnalata Joardar
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Raja S C Mullick Road, Kolkata 700032, India.
| | - Muhammad Riaz
- Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal 18050, Pakistan.
| | - Vincenzo De Feo
- Department of Pharmacy, Salerno University, Fisciano 84084, Salerno, Italy.
| | - Muhammad Zia-Ul-Haq
- Environment Science Department, Lahore College for Women University, Jail Road, Lahore 54600, Pakistan.
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Montanari F, Zdrazil B. How Open Data Shapes In Silico Transporter Modeling. Molecules 2017; 22:molecules22030422. [PMID: 28272367 PMCID: PMC5553104 DOI: 10.3390/molecules22030422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 12/05/2022] Open
Abstract
Chemical compound bioactivity and related data are nowadays easily available from open data sources and the open medicinal chemistry literature for many transmembrane proteins. Computational ligand-based modeling of transporters has therefore experienced a shift from local (quantitative) models to more global, qualitative, predictive models. As the size and heterogeneity of the data set rises, careful data curation becomes even more important. This includes, for example, not only a tailored cutoff setting for the generation of binary classes, but also the proper assessment of the applicability domain. Powerful machine learning algorithms (such as multi-label classification) now allow the simultaneous prediction of multiple related targets. However, the more complex, the less interpretable these models will get. We emphasize that transmembrane transporters are very peculiar, some of which act as off-targets rather than as real drug targets. Thus, careful selection of the right modeling technique is important, as well as cautious interpretation of results. We hope that, as more and more data will become available, we will be able to ameliorate and specify our models, coming closer towards function elucidation and the development of safer medicine.
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Affiliation(s)
- Floriane Montanari
- Pharmacoinformatics Research Group, Department of Pharmaceutical Chemistry, University of Vienna, A-1090 Vienna, Austria.
| | - Barbara Zdrazil
- Pharmacoinformatics Research Group, Department of Pharmaceutical Chemistry, University of Vienna, A-1090 Vienna, Austria.
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Plotnikava D, Sidarenka A, Novik G. Antibiotic resistance in lactococci and enterococci: phenotypic and molecular-genetic aspects. THE EUROBIOTECH JOURNAL 2017. [DOI: 10.24190/issn2564-615x/2017/01.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Abstract
Extensive use of antibiotics in medicine, veterinary practice and animal husbandry has promoted the development and dissemination of bacterial drug resistance. The number of resistant pathogens causing common infectious diseases increases rapidly and creates worldwide public health problem. Commensal bacteria, including lactic acid bacteria of genera Enterococcus and Lactococcus colonizing gastrointestinal and urogenital tracts of humans and animals may act as vehicles of antibiotic resistance genes similar to those found in pathogens. Lactococci and enterococci are widely used in manufacturing of fermented products and as probiotics, therefore monitoring and control of transmissible antibiotic resistance determinants in industrial strains of these microorganisms is necessary to approve their Qualified Presumption of Safety status. Understanding the nature and molecular mechanisms of antibiotic resistance in enterococci and lactococci is essential, as intrinsic resistant bacteria pose no threat to environment and human health in contrast to bacteria with resistance acquired through horizontal transfer of resistance genes. The review summarizes current knowledge concerning intrinsic and acquired antibiotic resistance in Lactococcus and Enterococcus genera, and discusses role of enterococci and lactococci in distribution of this feature.
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Affiliation(s)
- Danuta Plotnikava
- Institute of Microbiology, National Academy of Sciences of Belarus, Kuprevich Street 2, 220141 Minsk , Belarus
| | - Anastasiya Sidarenka
- Institute of Microbiology, National Academy of Sciences of Belarus, Kuprevich Street 2, 220141 Minsk , Belarus
| | - Galina Novik
- Institute of Microbiology, National Academy of Sciences of Belarus, Kuprevich Street 2, 220141 Minsk , Belarus
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Parsian M, Mutlu P, Yalcin S, Tezcaner A, Gunduz U. Half generations magnetic PAMAM dendrimers as an effective system for targeted gemcitabine delivery. Int J Pharm 2016; 515:104-113. [DOI: 10.1016/j.ijpharm.2016.10.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 11/17/2022]
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Singh NS, Bernier M, Wainer IW. Selective GPR55 antagonism reduces chemoresistance in cancer cells. Pharmacol Res 2016; 111:757-766. [PMID: 27423937 PMCID: PMC5026616 DOI: 10.1016/j.phrs.2016.07.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 07/11/2016] [Indexed: 01/02/2023]
Abstract
G protein-coupled receptor 55 (GPR55) possesses pro-oncogenic activity and its function can be competitively inhibited with (R,R')-4'-methoxy-1-naphthylfenoterol (MNF) through poorly defined signaling pathways. Here, the anti-tumorigenic effect of MNF was investigated in the human pancreatic cancer cell line, PANC-1, by focusing on the expression of known cancer biomarkers and the expression and function of multidrug resistance (MDR) exporters such as P-glycoprotein (Pgp) and breast cancer resistance protein (BCRP). Incubation of PANC1 cells with MNF (1μM) for 24h significantly decreased EGF receptor, pyruvate kinase M2 (PKM2), and β-catenin protein levels and was accompanied by significant reduction in nuclear accumulation of HIF-1α and the phospho-active forms of PKM2 and β-catenin. Inhibition of GPR55 with either MNF or the GPR55 antagonist CID 16020046 lowered the amount of MDR proteins in total cellular extracts while diminishing the nuclear expression of Pgp and BCRP. There was significant nuclear accumulation of doxorubicin in PANC-1 cells treated with MNF and the pre-incubation with MNF increased the cytotoxicity of doxorubicin and gemcitabine in these cells. Potentiation of doxorubicin cytotoxicity by MNF was also observed in MDA-MB-231 breast cancer cells and U87MG glioblastoma cells, which express high levels of GPR55. The data suggest that inhibition of GPR55 activity produces antitumor effects via attenuation of the MEK/ERK and PI3K-AKT pathways leading to a reduction in the expression and function of MDR proteins.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/metabolism
- Antibiotics, Antineoplastic/metabolism
- Antibiotics, Antineoplastic/pharmacology
- Antimetabolites, Antineoplastic/metabolism
- Antimetabolites, Antineoplastic/pharmacology
- Biomarkers, Tumor/metabolism
- Carrier Proteins/metabolism
- Cell Proliferation/drug effects
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/metabolism
- Deoxycytidine/pharmacology
- Dose-Response Relationship, Drug
- Doxorubicin/metabolism
- Doxorubicin/pharmacology
- Drug Resistance, Neoplasm/drug effects
- Extracellular Signal-Regulated MAP Kinases/metabolism
- Fenoterol/analogs & derivatives
- Fenoterol/pharmacology
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- MCF-7 Cells
- Membrane Proteins/metabolism
- Mitogen-Activated Protein Kinase Kinases/metabolism
- Pancreatic Neoplasms/drug therapy
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/pathology
- Phosphatidylinositol 3-Kinase/metabolism
- Phosphorylation
- Proto-Oncogene Proteins c-akt/metabolism
- Receptors, Cannabinoid
- Receptors, G-Protein-Coupled/antagonists & inhibitors
- Signal Transduction/drug effects
- Thyroid Hormones/metabolism
- beta Catenin/metabolism
- Gemcitabine
- Thyroid Hormone-Binding Proteins
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Affiliation(s)
- Nagendra S Singh
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health (NIH), Baltimore, MD 21224, USA.
| | - Michel Bernier
- Translational Gerontology Branch, National Institute on Aging, (NIH), Baltimore, MD 21224, USA.
| | - Irving W Wainer
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health (NIH), Baltimore, MD 21224, USA; Mitchell Woods Pharmaceuticals, Shelton, CT 06484, USA.
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Yuan Y, Cai T, Xia X, Zhang R, Chiba P, Cai Y. Nanoparticle delivery of anticancer drugs overcomes multidrug resistance in breast cancer. Drug Deliv 2016; 23:3350-3357. [DOI: 10.1080/10717544.2016.1178825] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Yueling Yuan
- College of Pharmacy, Jinan University, Guangzhou, P. R. China,
| | - Tiange Cai
- College of Life Science, Liaoning University, Shenyang, P. R. China,
| | - Xi Xia
- College of Pharmacy, Jinan University, Guangzhou, P. R. China,
| | - Ronghua Zhang
- College of Pharmacy, Jinan University, Guangzhou, P. R. China,
| | - Peter Chiba
- Medical University of Vienna, Vienna, Austria, and
| | - Yu Cai
- College of Pharmacy, Jinan University, Guangzhou, P. R. China,
- Cancer Research Institute of Jinan University, Guangzhou, P. R. China
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Liang H, Ren X, Qian J, Zhang X, Meng L, Wang X, Li L, Fang X, Sha X. Size-Shifting Micelle Nanoclusters Based on a Cross-Linked and pH-Sensitive Framework for Enhanced Tumor Targeting and Deep Penetration Features. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10136-10146. [PMID: 27046063 DOI: 10.1021/acsami.6b00668] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The antitumor effect of chemotherapeutics loaded micelles mainly depends on two aspects: the accumulation in the tumor region and the penetration into the tumor interior. These two processes have different demands on particle size. The optimal particle size for enhanced permeability and retention (EPR) is commonly believed to be around 100 nm, while much smaller size is desired for deeper penetration into the tumor interior. To address these two different requirements, we constructed size-shifting micelle nanoclusters (MNC) based on a cross-linked framework interspersed with micelles. The particle size of the micelles was 14.6 ± 0.8 nm and increased to 104.2 ± 8.1 nm after the MNC were formed, leading to an effective utilization of the EPR effect. MNC were shifted to independent micelles in lysosomes, so that a more favorable particle size for penetration could be realized. The results of antitumor growth in vivo demonstrated that size-shifting MNC were more beneficial for tumor therapy than micelles.
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Affiliation(s)
- Huihui Liang
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Xiaoqing Ren
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Jianghui Qian
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Xiulei Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Lin Meng
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Xiaofei Wang
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Lei Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Xiaoling Fang
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
| | - Xianyi Sha
- Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University , Lane 826, Zhangheng Road, Shanghai 201203, China
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Abstract
The final therapeutic effect of a drug candidate, which is directed to a specific molecular target strongly depends on its absorption, distribution, metabolism and excretion (ADME). The disruption of at least one element of ADME may result in serious drug resistance. In this work we described the role of one element of this resistance: phase II metabolism with UDP-glucuronosyltransferases (UGTs). UGT function is the transformation of their substrates into more polar metabolites, which are better substrates for the ABC transporters, MDR1, MRP and BCRP, than the native drug. UGT-mediated drug resistance can be associated with (i) inherent overexpression of the enzyme, named intrinsic drug resistance or (ii) induced expression of the enzyme, named acquired drug resistance observed when enzyme expression is induced by the drug or other factors, as food-derived compounds. Very often this induction occurs via ligand binding receptors including AhR (aryl hydrocarbon receptor) PXR (pregnane X receptor), or other transcription factors. The effect of UGT dependent resistance is strengthened by coordinate action and also a coordinate regulation of the expression of UGTs and ABC transporters. This coupling of UGT and multidrug resistance proteins has been intensively studied, particularly in the case of antitumor treatment, when this resistance is "improved" by differences in UGT expression between tumor and healthy tissue. Multidrug resistance coordinated with glucuronidation has also been described here for drugs used in the management of epilepsy, psychiatric diseases, HIV infections, hypertension and hypercholesterolemia. Proposals to reverse UGT-mediated drug resistance should consider the endogenous functions of UGT.
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Affiliation(s)
- Zofia Mazerska
- Gdańsk University of Technology, Chemical Faculty, Department of Pharmaceutical Technology and Biochemistry, 80-233 Gdańsk, Poland
| | - Anna Mróz
- Gdańsk University of Technology, Chemical Faculty, Department of Pharmaceutical Technology and Biochemistry, 80-233 Gdańsk, Poland
| | - Monika Pawłowska
- Gdańsk University of Technology, Chemical Faculty, Department of Pharmaceutical Technology and Biochemistry, 80-233 Gdańsk, Poland
| | - Ewa Augustin
- Gdańsk University of Technology, Chemical Faculty, Department of Pharmaceutical Technology and Biochemistry, 80-233 Gdańsk, Poland.
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Steinbuch KB, Fridman M. Mechanisms of resistance to membrane-disrupting antibiotics in Gram-positive and Gram-negative bacteria. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00389j] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A diverse repertoire of mechanisms has evolved to confer resistance to bacterial membrane disrupting antimicrobial cationic amphiphiles.
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Affiliation(s)
- Kfir B. Steinbuch
- School of Chemistry
- Beverly Raymond Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
| | - Micha Fridman
- School of Chemistry
- Beverly Raymond Sackler Faculty of Exact Sciences
- Tel Aviv University
- Tel Aviv
- Israel
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Cruz A, Rodrigues R, Pinheiro M, Mendo S. Transcriptomes analysis of Aeromonas molluscorum Av27 cells exposed to tributyltin (TBT): Unravelling the effects from the molecular level to the organism. MARINE ENVIRONMENTAL RESEARCH 2015; 109:132-9. [PMID: 26171931 PMCID: PMC4541717 DOI: 10.1016/j.marenvres.2015.06.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/24/2015] [Accepted: 06/26/2015] [Indexed: 06/04/2023]
Abstract
Aeromonas molluscorum Av27 cells were exposed to 0, 5 and 50 μM of TBT and the respective transcriptomes were obtained by pyrosequencing. Gene Ontology revealed that exposure to 5 μM TBT results in a higher number of repressed genes in contrast with 50 μM of TBT, where the number of over-expressed genes is greater. At both TBT concentrations, higher variations in gene expression were found in the functional categories associated with enzymatic activities, transport/binding and oxidation-reduction. A number of proteins are affected by TBT, such as the acriflavin resistance protein, several transcription-related proteins, several Hsps, ABC transporters, CorA and ZntB and other outer membrane efflux proteins, all of these involved in cellular metabolic processes, important to maintain overall cell viability. Using the STRING tool, several proteins with unknown function were related with others involved in degradation processes, such as the pyoverdine chromophore biosynthetic protein, that has been described as playing a role in the Sn-C cleavage of organotins. This approach has allowed a better understanding of the molecular effects of exposure of bacterial cells to TBT. Furthermore it contributes to the knowledge of the functional genomic aspects of bacteria exposed to this pollutant. Furthermore, the transcriptomic data gathered, and now publically available, constitute a valuable resource for comparative genome analysis.
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Affiliation(s)
- Andreia Cruz
- Biology Department & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
| | - Raquel Rodrigues
- Biology Department & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Miguel Pinheiro
- Advanced Services Unit, Biocant - Biotechnology Innovation Center, 3060-325, Cantanhede, Portugal; School of Medicine, University of St. Andrews, North Haugh, KY16 9TF, St. Andrews, UK
| | - Sónia Mendo
- Biology Department & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
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48
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Abstract
UNLABELLED Sensing of and responding to environmental changes are of vital importance for microbial cells. Consequently, bacteria have evolved a plethora of signaling systems that usually sense biochemical cues either via direct ligand binding, thereby acting as "concentration sensors," or by responding to downstream effects on bacterial physiology, such as structural damage to the cell. Here, we describe a novel, alternative signaling mechanism that effectively implements a "flux sensor" to regulate antibiotic resistance. It relies on a sensory complex consisting of a histidine kinase and an ABC transporter, in which the transporter fulfills the dual role of both the sensor of the antibiotic and the mediator of resistance against it. Combining systems biological modeling with in vivo experimentation, we show that these systems in fact respond to changes in activity of individual resistance transporters rather than to changes in the antibiotic concentration. Our model shows that the cell thereby adjusts the rate of de novo transporter synthesis to precisely the level needed for protection. Such a flux-sensing mechanism may serve as a cost-efficient produce-to-demand strategy, controlling a widely conserved class of antibiotic resistance systems. IMPORTANCE Bacteria have to be able to accurately perceive their environment to allow adaptation to changing conditions. This is usually accomplished by sensing the concentrations of beneficial or harmful substances or by measuring the effect of the prevailing conditions on the cell. Here we show the existence of a new way of sensing the environment, where the bacteria monitor the activity of an antibiotic resistance transporter. Such a "flux-sensing" mechanism allows the cell to detect its current capacity to deal with the antibiotic challenge and thus precisely respond to the need for more transporters. We propose that this is a cost-efficient way of regulating antibiotic resistance on demand.
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Punfa W, Suzuki S, Pitchakarn P, Yodkeeree S, Naiki T, Takahashi S, Limtrakul P. Curcumin-loaded PLGA nanoparticles conjugated with anti- P-glycoprotein antibody to overcome multidrug resistance. Asian Pac J Cancer Prev 2015; 15:9249-58. [PMID: 25422208 DOI: 10.7314/apjcp.2014.15.21.9249] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The encapsulation of curcumin (Cur) in polylactic-co-glycolic acid (PLGA) nanoparticles (Cur- NPs) was designed to improve its solubility and stability. Conjugation of the Cur-NPs with anti-P-glycoprotein (P-gp) antibody (Cur-NPs-APgp) may increase their targeting to P-gp, which is highly expressed in multidrug- resistance (MDR) cancer cells. This study determined whether Cur-NPs-APgp could overcome MDR in a human cervical cancer model (KB-V1 cells) in vitro and in vivo. MATERIALS AND METHODS First, we determined the MDR- reversing property of Cur in P-gp-overexpressing KB-V1 cells in vitro and in vivo. Cur-NPs and Cur-NPs-APgp, in the range 150-180 nm, were constructed and subjected to an in vivo pharmacokinetic study compared with Cur. The in vitro and in vivo MDR-reversing properties of Cur-NPs and Cur-NPs-APgp were then investigated. Moreover, the stability of the NPs was determined in various solutions. RESULTS The combined treatment of paclitaxel (PTX) with Cur dramatically decreased cell viability and tumor growth compared to PTX treatment alone. After intravenous injection, Cur-NPs-APgp and Cur-NPs could be detected in the serum up to 60 and 120 min later, respectively, whereas Cur was not detected after 30 min. Pretreatment with Cur-NPs-APgp, but not with NPs or Cur-NPs, could enhance PTX sensitivity both in vitro and in vivo. The constructed NPs remained a consistent size, proving their stability in various solutions. CONCLUSIONS Our functional Cur-NPs-APgp may be a suitable candidate for application in a drug delivery system for overcoming drug resistance. The further development of Cur-NPs-APgp may be beneficial to cancer patients by leading to its use as either as a MDR modulator or as an anticancer drug.
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Affiliation(s)
- Wanisa Punfa
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand E-mail :
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Hui C, Lan Z, Yue-li L, Li-lin H, Li-lin H. Knockdown of Eag1 Expression by RNA Interference Increases Chemosensitivity to Cisplatin in Ovarian Cancer Cells. Reprod Sci 2015; 22:1618-26. [DOI: 10.1177/1933719115590665] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Chen Hui
- Department of Gynaecology and Obstetrics, Affiliated Southeast Hospital of Xiamen University (175th Hospital of PLA), Zhangzhou, Fujian, China
| | - Zhang Lan
- Department of Gynaecology and Obstetrics, Affiliated Southeast Hospital of Xiamen University (175th Hospital of PLA), Zhangzhou, Fujian, China
| | - Lin Yue-li
- Department of Gynaecology and Obstetrics, Affiliated Southeast Hospital of Xiamen University (175th Hospital of PLA), Zhangzhou, Fujian, China
| | - Hong Li-lin
- Department of Gynaecology and Obstetrics, Affiliated Southeast Hospital of Xiamen University (175th Hospital of PLA), Zhangzhou, Fujian, China
| | - Huang Li-lin
- Department of Gynaecology and Obstetrics, Affiliated Southeast Hospital of Xiamen University (175th Hospital of PLA), Zhangzhou, Fujian, China
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