1
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Barghahn S, Saridis G, Mantz M, Meyer U, Mellüh JC, Misas Villamil JC, Huesgen PF, Doehlemann G. Combination of transcriptomic, proteomic, and degradomic profiling reveals common and distinct patterns of pathogen-induced cell death in maize. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:574-596. [PMID: 37339931 DOI: 10.1111/tpj.16356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/28/2023] [Accepted: 06/06/2023] [Indexed: 06/22/2023]
Abstract
Regulated cell death (RCD) is crucial for plant development, as well as in decision-making in plant-microbe interactions. Previous studies revealed components of the molecular network controlling RCD, including different proteases. However, the identity, the proteolytic network as well as molecular components involved in the initiation and execution of distinct plant RCD processes, still remain largely elusive. In this study, we analyzed the transcriptome, proteome, and N-terminome of Zea mays leaves treated with the Xanthomonas effector avrRxo1, the mycotoxin Fumonisin B1 (FB1), or the phytohormone salicylic acid (SA) to dissect plant cellular processes related to cell death and plant immunity. We found highly distinct and time-dependent biological processes being activated on transcriptional and proteome levels in response to avrRxo1, FB1, and SA. Correlation analysis of the transcriptome and proteome identified general, as well as trigger-specific markers for cell death in Zea mays. We found that proteases, particularly papain-like cysteine proteases, are specifically regulated during RCD. Collectively, this study characterizes distinct RCD responses in Z. mays and provides a framework for the mechanistic exploration of components involved in the initiation and execution of cell death.
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Affiliation(s)
- Sina Barghahn
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
| | - Georgios Saridis
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
| | - Melissa Mantz
- Central Institute for Engineering, Electronics and Analytics, ZEA-3, Forschungszentrum Jülich, Jülich, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty and University Hospital, University of Cologne, Cologne, Germany
| | - Ute Meyer
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
| | | | - Johana C Misas Villamil
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - Pitter F Huesgen
- Central Institute for Engineering, Electronics and Analytics, ZEA-3, Forschungszentrum Jülich, Jülich, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Medical Faculty and University Hospital, University of Cologne, Cologne, Germany
- Institute of Biochemistry, University of Cologne, Cologne, Germany
| | - Gunther Doehlemann
- Institute for Plant Sciences, University of Cologne, Cologne, Germany
- Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
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2
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Wada M. Role of ABC Transporters in Cancer Development and Malignant Alteration. YAKUGAKU ZASSHI 2022; 142:1201-1225. [DOI: 10.1248/yakushi.22-00108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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3
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Pilotto Heming C, Muriithi W, Wanjiku Macharia L, Niemeyer Filho P, Moura-Neto V, Aran V. P-glycoprotein and cancer: what do we currently know? Heliyon 2022; 8:e11171. [PMID: 36325145 PMCID: PMC9618987 DOI: 10.1016/j.heliyon.2022.e11171] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Acquired resistance during cancer treatment is unfortunately a frequent event. There are several reasons for this, including the ability of the ATP-binding cassette transporters (ABC transporters), which are integral membrane proteins, to export chemotherapeutic molecules from the interior of the tumor cells. One important member of this family is the protein known as Permeability Glycoprotein (P-Glycoprotein, P-gp or ABCB1). Its clinical relevance relies mainly on the fact that the inhibition of P-gp and other ABC transporters could result in the reversal of the multidrug resistance (MDR) phenotype in some patients. Recently, other roles apart from being a key player in MDR, have emerged for P-gp. Therefore, this review discusses the relationship between P-gp and MDR, in addition to the possible role of this protein as a biomarker in cancer.
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4
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Reyes ME, Riquelme I, Salvo T, Zanella L, Letelier P, Brebi P. Brown Seaweed Fucoidan in Cancer: Implications in Metastasis and Drug Resistance. Mar Drugs 2020; 18:md18050232. [PMID: 32354032 PMCID: PMC7281670 DOI: 10.3390/md18050232] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 12/11/2022] Open
Abstract
Fucoidans are sulphated polysaccharides that can be obtained from brown seaweed and marine invertebrates. They have anti-cancer properties, through their targeting of several signaling pathways and molecular mechanisms within malignant cells. This review describes the chemical structure diversity of fucoidans and their similarity with other molecules such as glycosaminoglycan, which enable them to participation in diverse biological processes. Furthermore, this review summarizes their influence on the development of metastasis and drug resistance, which are the main obstacles to cure cancer. Finally, this article discusses how fucoidans have been used in clinical trials to evaluate their potential synergy with other anti-cancer therapies.
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Affiliation(s)
- María Elena Reyes
- Laboratory of Integrative Biology (LIBi), Center of Excellence in Translational Medicine- Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco 4710296, Chile
| | - Ismael Riquelme
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Temuco 4810101, Chile
| | - Tomás Salvo
- Laboratory of Integrative Biology (LIBi), Center of Excellence in Translational Medicine- Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco 4710296, Chile
| | - Louise Zanella
- Laboratory of Integrative Biology (LIBi), Center of Excellence in Translational Medicine- Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco 4710296, Chile
| | - Pablo Letelier
- Precision Health Research Laboratory, Departamento de Procesos Diagnósticos y Evaluación, Facultad Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile
| | - Priscilla Brebi
- Laboratory of Integrative Biology (LIBi), Center of Excellence in Translational Medicine- Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco 4710296, Chile
- Correspondence: ; Tel.: +56-9-92659362
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5
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Sechi M, Lall RK, Afolabi SO, Singh A, Joshi DC, Chiu SY, Mukhtar H, Syed DN. Fisetin targets YB-1/RSK axis independent of its effect on ERK signaling: insights from in vitro and in vivo melanoma models. Sci Rep 2018; 8:15726. [PMID: 30356079 PMCID: PMC6200766 DOI: 10.1038/s41598-018-33879-w] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 10/06/2018] [Indexed: 12/14/2022] Open
Abstract
The anti-proliferative activity of dietary flavonoid fisetin has been validated in various cancer models. Establishing its precise mechanism of action has proved somewhat challenging given the multiplicity of its targets. We demonstrated that YB-1 promotes epithelial-to-mesenchymal transition and its inhibition suppressed tumor cell proliferation and invasion. The p90 ribosomal S6 kinase (RSK), an important ERK effector, activates YB-1 to drive melanoma growth. We found that fisetin treatment of monolayer/3-D melanoma cultures resulted in YB-1 dephosphorylation and reduced transcript levels. In parallel, fisetin suppressed mesenchymal markers and matrix-metalloproteinases in melanoma cells. Data from cell-free/cell-based systems indicated that fisetin inhibited RSK activity through binding to the kinase. Affinity studies for RSK isoforms evaluated stronger interaction for RSK2 than RSK1. Competition assays performed to monitor binding responses revealed that YB-1 and RSK2 do not compete, rather binding of fisetin to RSK2 promotes its binding to YB-1. Fisetin suppressed YB-1/RSK signaling independent of its effect on ERK, and reduced MDR1 levels. Comparable efficacy of fisetin and vemurafenib for inhibiting melanoma growth was noted albeit through divergent modulation of ERK. Our studies provide insight into additional modes of regulation through which fisetin interferes with melanoma growth underscoring its potential therapeutic efficacy in disease progression.
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Affiliation(s)
- Mario Sechi
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Rahul K Lall
- Department of Dermatology, University of Wisconsin, Madison, USA
| | - Saheed O Afolabi
- Department of Dermatology, University of Wisconsin, Madison, USA
| | - Anant Singh
- Department of Dermatology, University of Wisconsin, Madison, USA
| | - Dinesh C Joshi
- Department of Neuroscience, University of Wisconsin, Madison, USA
| | - Shing-Yan Chiu
- Department of Neuroscience, University of Wisconsin, Madison, USA
| | - Hasan Mukhtar
- Department of Dermatology, University of Wisconsin, Madison, USA
| | - Deeba N Syed
- Department of Dermatology, University of Wisconsin, Madison, USA.
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6
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Genotypes and haplotypes of ABCB1 contribute to TAC chemotherapy response in Malaysian triple negative breast cancer patients. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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7
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Maia RC, Vasconcelos FC, Souza PS, Rumjanek VM. Towards Comprehension of the ABCB1/P-Glycoprotein Role in Chronic Myeloid Leukemia. Molecules 2018; 23:molecules23010119. [PMID: 29316665 PMCID: PMC6017716 DOI: 10.3390/molecules23010119] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 12/25/2017] [Accepted: 01/05/2018] [Indexed: 12/22/2022] Open
Abstract
Abstract: The introduction of imatinib (IM), a BCR-ABL1 tyrosine kinase inhibitor (TKI), has represented a significant advance in the first-line treatment of chronic myeloid leukemia (CML). However, approximately 30% of patients need to discontinue IM due to resistance or intolerance to this drug. Both resistance and intolerance have also been observed in treatment with the second-generation TKIs-dasatinib, nilotinib, and bosutinib-and the third-generation TKI-ponatinib. The mechanisms of resistance to TKIs may be BCR-ABL1-dependent and/or BCR-ABL1-independent. Although the role of efflux pump P-glycoprotein (Pgp), codified by the ABCB1 gene, is unquestionable in drug resistance of many neoplasms, a longstanding question exists about whether Pgp has a firm implication in TKI resistance in the clinical scenario. The goal of this review is to offer an overview of ABCB1/Pgp expression/activity/polymorphisms in CML. Understanding how interactions, associations, or cooperation between Pgp and other molecules-such as inhibitor apoptosis proteins, microRNAs, or microvesicles-impact IM resistance risk may be critical in evaluating the response to TKIs in CML patients. In addition, new non-TKI compounds may be necessary in order to overcome the resistance mediated by Pgp in CML.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/physiology
- Animals
- Drug Resistance, Neoplasm
- Genetic Predisposition to Disease
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Polymorphism, Single Nucleotide
- Protein Kinase Inhibitors/pharmacology
- Protein Kinase Inhibitors/therapeutic use
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Affiliation(s)
- Raquel C Maia
- Laboratório de Hemato-Oncologia Celular e Molecular and Programa de Hemato-Oncologia Molecular, Instituto Nacional de Câncer (INCA), Praça da Cruz Vermelha, 23, 6° andar, CEP 20230-130 Rio de Janeiro, Brazil.
| | - Flavia C Vasconcelos
- Laboratório de Hemato-Oncologia Celular e Molecular and Programa de Hemato-Oncologia Molecular, Instituto Nacional de Câncer (INCA), Praça da Cruz Vermelha, 23, 6° andar, CEP 20230-130 Rio de Janeiro, Brazil.
| | - Paloma S Souza
- Laboratório de Hemato-Oncologia Celular e Molecular and Programa de Hemato-Oncologia Molecular, Instituto Nacional de Câncer (INCA), Praça da Cruz Vermelha, 23, 6° andar, CEP 20230-130 Rio de Janeiro, Brazil.
| | - Vivian M Rumjanek
- Laboratório de Imunologia Tumoral, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Av. Carlos Chagas Filho, 373, Cidade Universitária, CEP 21941-902 Rio de Janeiro, Brazil.
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8
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Kreuzinger C, Geroldinger A, Smeets D, Braicu EI, Sehouli J, Koller J, Wolf A, Darb-Esfahani S, Joehrens K, Vergote I, Vanderstichele A, Boeckx B, Lambrechts D, Gabra H, Wisman GBA, Trillsch F, Heinze G, Horvat R, Polterauer S, Berns E, Theillet C, Cacsire Castillo-Tong D. A Complex Network of Tumor Microenvironment in Human High-Grade Serous Ovarian Cancer. Clin Cancer Res 2017; 23:7621-7632. [PMID: 28972047 DOI: 10.1158/1078-0432.ccr-17-1159] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/11/2017] [Accepted: 09/27/2017] [Indexed: 11/16/2022]
Abstract
Purpose: Most high-grade serous ovarian cancer (HGSOC) patients develop recurrent disease after first-line treatment, frequently with fatal outcome. This work aims at studying the molecular biology of both primary and recurrent HGSOC.Experimental Design: Gene expression profiles of matched primary and recurrent fresh-frozen tumor tissues from 66 HGSOC patients were obtained by RNA sequencing. Clustering analyses and pairwise comparison of the profiles between matched samples and subsequent functional alignment were used for the identification of molecular characteristics of HGSOC.Results: Both primary and recurrent HGSOC samples presented predominant gene expression differences in their microenvironment, determined by a panel of genes covering all major pathways of immune activation together with a number of genes involved in the remodeling of extracellular matrix and adipose tissues. Stratifying tumor tissues into immune active and silent groups, we further discovered that although some recurrent tumors shared the same immune status as their primary counterparts, others switched the immune status, either from silent to active or active to silent. Interestingly, genes belonging to the B7-CD28 immune checkpoint family, known for their major role as negative regulators of the immune response, were overexpressed in the immune active tumors. Searching for potential tumor antigens, CEACAM21, a member of the carcinoembryonic antigen family, was found to be significantly overexpressed in immune active tissues in comparison with the silent ones.Conclusions: The results illustrate the complexity of the tumor microenvironment in HGSOC and reveal the molecular relationship between primary and recurrent tumors, which have multiple therapeutic implications. Clin Cancer Res; 23(24); 7621-32. ©2017 AACR.
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Affiliation(s)
- Caroline Kreuzinger
- Translational Gynecology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Angelika Geroldinger
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Dominiek Smeets
- KU Leuven, Department of Human Genetics, Laboratory for Translational Genetics, Leuven, Belgium.,VIB, VIB Center for Cancer Biology, Laboratory for Translational Genetics, Leuven, Belgium
| | - Elena Ioana Braicu
- Tumor Bank Ovarian Cancer Network, Department of Gynecology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Gynecology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jalid Sehouli
- Tumor Bank Ovarian Cancer Network, Department of Gynecology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Gynecology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Julia Koller
- Translational Gynecology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Andrea Wolf
- Translational Gynecology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Silvia Darb-Esfahani
- Tumor Bank Ovarian Cancer Network, Department of Gynecology, Charité Universitätsmedizin Berlin, Berlin, Germany.,Institute of Pathology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Korinna Joehrens
- Institute of Pathology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Ignace Vergote
- Department of Gynecologic Oncology, Leuven Cancer Institute, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Adriaan Vanderstichele
- Department of Gynecologic Oncology, Leuven Cancer Institute, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Bram Boeckx
- KU Leuven, Department of Human Genetics, Laboratory for Translational Genetics, Leuven, Belgium.,VIB, VIB Center for Cancer Biology, Laboratory for Translational Genetics, Leuven, Belgium
| | - Diether Lambrechts
- KU Leuven, Department of Human Genetics, Laboratory for Translational Genetics, Leuven, Belgium.,VIB, VIB Center for Cancer Biology, Laboratory for Translational Genetics, Leuven, Belgium
| | - Hani Gabra
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.,Clinical Discovery Unit, Early Clinical Development, AstraZeneca, Cambridge, United Kingdom
| | - G Bea A Wisman
- Department of Gynecologic Oncology, Cancer Research Center Groningen, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Fabian Trillsch
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany.,Department of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Georg Heinze
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Reinhard Horvat
- Department of Clinical Pathology, Medical University of Vienna, Vienna, Austria
| | - Stephan Polterauer
- Department of Gynecology and Gynecologic Oncology, Gynecologic Cancer Unit, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Els Berns
- Department of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Charles Theillet
- Institut de Recherche en Cancérologie de Montpellier, Université Montpellier, Montpellier, France.,INSERM U1194, Montpellier, France
| | - Dan Cacsire Castillo-Tong
- Translational Gynecology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.
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9
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Yan YY, Wang F, Zhao XQ, Wang XK, Chen YF, Liu H, Xie Y, Fu LW. Degradation of P-glycoprotein by pristimerin contributes to overcoming ABCB1-mediated chemotherapeutic drug resistance in vitro. Oncol Rep 2016; 37:31-40. [PMID: 27840996 PMCID: PMC5355671 DOI: 10.3892/or.2016.5230] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 10/31/2016] [Indexed: 11/22/2022] Open
Abstract
ABCB1 (P-glycoprotein, ABCB1/MDR1) is one of the major members of the ABC transporters linked to MDR in cancer cells. In this study, we observed that pristimerin, a natural triterpenoid, potently decreased P-gp in a dose-dependent manner in both drug-resistant KBv200 and stable transfected HEK293/ABCB1 cell lines. Moreover, pristimerin also inhibited cell proliferation and induced apoptosis in both cell lines. Intriguingly, reverse transcription-PCR, real-time PCR and protein turn-over assay revealed that the decrease of P-gp was independent of mRNA level but primarily owing to its protein stability. Furthermore, immunofluorescence study with anti-P-gp antibody showed that pristimerin disturbed the subcellular distribution of P-gp with decreased location in the plasma membrane. Taken together, these data suggest that subcellular distribution of P-gp and subsequent downregulation by pristimerin contribute to overcoming ABCB1-mediated chemotherapeutic drug resistance. Our findings suggested inducing the decrease of P-gp membrane protein could be a new promising alternative therapeutic strategy in ABCB1-mediated MDR.
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Affiliation(s)
- Yan-Yan Yan
- Institute of Respiratory and Occupational Diseases, Collaborative Innovation Center for Cancer, Shanxi Datong University, Datong, Shanxi 037009, P.R. China
| | - Fang Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiao-Qin Zhao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiao-Kun Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Yi-Fan Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Hong Liu
- Institute of Respiratory and Occupational Diseases, Collaborative Innovation Center for Cancer, Shanxi Datong University, Datong, Shanxi 037009, P.R. China
| | - Yong Xie
- Institute of Respiratory and Occupational Diseases, Collaborative Innovation Center for Cancer, Shanxi Datong University, Datong, Shanxi 037009, P.R. China
| | - Li-Wu Fu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
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10
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Tazzite A, Kassogue Y, Diakité B, Jouhadi H, Dehbi H, Benider A, Nadifi S. Association between ABCB1 C3435T polymorphism and breast cancer risk: a Moroccan case-control study and meta-analysis. BMC Genet 2016; 17:126. [PMID: 27580695 PMCID: PMC5007843 DOI: 10.1186/s12863-016-0434-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 08/24/2016] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Breast cancer is the most common cause of cancer death among women. Several studies have investigated the relationship between the C3435T polymorphism of ABCB1 gene and risk of breast cancer; but the results are conflicting. In the present study, we sought to assess the relationship between the C3435T polymorphism in ABCB1 gene and the risk of breast cancer in a sample of the Moroccan population. METHODS A case control study was performed on 60 breast cancer patients and 68 healthy women. The ABCB1 C3435T polymorphism was analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Furthermore, a meta-analysis including 16 studies with 6094 cases of breast cancer and 8646 controls was performed. RESULTS Genotype frequencies were 50 % for CC, 33.3 % for CT and 16.7 % for TT in patients and 41.2 % for CC, 48.5 % for CT and 10.3 % for TT respectively in the control group. This difference was not statistically significant. The same trend as observed in the allele distribution between patients and controls (P = 0.84). Findings from the meta-analysis showed that the ABCB1 C3435T polymorphism was not associated with an increased risk of breast cancer in the dominant model (OR = 0.907; 95 % CI = 0.767-1.073; P = 0.25) as well as in the recessive model (OR = 1.181; 95 % CI = 0.973-1.434; P = 0.093) and in the allele contrast model (OR = 1.098; 95 % CI = 0.972-1.240; P = 0.133). However, the stratification of studies on ethnic basis showed that the TT genotype was associated with the risk of breast cancer in Asians (OR = 1.405; 95 % CI = 1.145-1.725; P = 0.001), Caucasians (OR = 1.093; 95 % CI = 1.001-1.194; P = 0.048) and North African (OR = 2.028; 95 % CI = 1.220-3.371; P = 0.006). CONCLUSIONS We have noted that the implication of C3435T variant on the risk of breast cancer was ethnicity-dependent. However, there is no evidence that ABCB1 C3435T polymorphism could play a role in susceptibility to breast cancer in Morocco. Further studies with a larger sample size, extended to other polymorphisms are needed to understand the influence of ABCB1 genetic variants on the risk of breast cancer.
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Affiliation(s)
- Amal Tazzite
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca Hassan II University, 19 Rue Tarik Ibnou Ziad, B.P. 9154 Casablanca, Morocco
| | - Yaya Kassogue
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca Hassan II University, 19 Rue Tarik Ibnou Ziad, B.P. 9154 Casablanca, Morocco
| | - Bréhima Diakité
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca Hassan II University, 19 Rue Tarik Ibnou Ziad, B.P. 9154 Casablanca, Morocco
| | - Hassan Jouhadi
- Mohammed VI Center for Cancer Treatment, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Hind Dehbi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca Hassan II University, 19 Rue Tarik Ibnou Ziad, B.P. 9154 Casablanca, Morocco
| | - Abdellatif Benider
- Mohammed VI Center for Cancer Treatment, Ibn Rochd University Hospital, Casablanca, Morocco
| | - Sellama Nadifi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca Hassan II University, 19 Rue Tarik Ibnou Ziad, B.P. 9154 Casablanca, Morocco
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11
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Liu W, Li H, Zhang D, Lv M, Li Y, Hao Y, Chen Y, Liu X, Xue F, Zhang L, Yang R. Effects of the multidrug resistance-1 gene on drug resistance in primary immune thrombocytopenia. Autoimmunity 2016; 49:486-495. [PMID: 27258931 DOI: 10.1080/08916934.2016.1191476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Primary immune thrombocytopenia (ITP) is an autoimmune disorder that is characterized by low platelet count. Glucocorticoids (GCs) resistance is a great challenge in the treatment of ITP. P-glycoprotein (P-gp) is a widely studied protein, which is associated with drug resistance. However, in ITP, the functional activity and immune regulation mechanism of P-gp remain uncertain. In this study, we evaluated the expression and functional activity of P-gp in different lymphocyte subsets, explored the correlation between P-gp function and GCs resistance and investigated the role of P-gp in ITP pathogenesis. Results indicated that the functional activity and mRNA level of P-gp were significantly higher in GCs-nonresponsive patients than in GCs-responsive patients with ITP. However, these differences in P-gp were only significant in CD8+ T cells. P-gp function was related to disease activity rather than GCs therapy. P-gp was involved in secreting granzyme B and perforin, maintaining autoreactive lymphocytes survival and enhancing autologous platelets lysis in ITP. In conclusion, over-functional P-gp might play an important role in the pathogenesis of ITP and induce GCs resistance in nonresponsive ITP patients. The blockage of P-gp could be a promising therapeutic approach for GCs-resistant patients with ITP.
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Affiliation(s)
- Wenjie Liu
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Huiyuan Li
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Donglei Zhang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Mingen Lv
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yang Li
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yating Hao
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Yunfei Chen
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Xiaofan Liu
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Feng Xue
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Lei Zhang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
| | - Renchi Yang
- a State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , China
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12
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Kopp TI, Andersen V, Tjonneland A, Vogel U. Polymorphisms in ATP-binding cassette transporter genes and interaction with diet and life style factors in relation to colorectal cancer in a Danish prospective case-cohort study. Scand J Gastroenterol 2016; 50:1469-81. [PMID: 26109419 DOI: 10.3109/00365521.2015.1056224] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS The ATP-binding cassette (ABC) transporter family transports various molecules across the enterocytes in the gut protecting the intestine against potentially harmful substances. Moreover, ABC transporters are involved in mucosal immune defence through interaction with cytokines. The study aimed to assess whether polymorphisms in ABCB1, ABCC2 and ABCG2 were associated with risk of colorectal cancer (CRC) and to investigate gene-environment (dietary factors, smoking and use of non-steroidal anti-inflammatory drugs) and gene-gene interactions between previously studied polymorphisms in IL1B and IL10 and ABC transporter genes in relation to CRC risk. MATERIALS AND METHODS We used a Danish prospective case-cohort study of 1010 CRC cases and 1829 randomly selected participants from the Danish Diet, Cancer and Health cohort. Incidence rate ratios were calculated based on Cox' proportional hazards model. RESULTS None of the polymorphisms were associated with CRC, but ABCB1 and ABCG2 haplotypes were associated with risk of CRC. ABCB1/rs1045642 interacted with intake of cereals and fiber (p-Value for interaction (P(int)) = 0.001 and 0.01, respectively). In a three-way analysis, both ABCB1/rs1045642 and ABCG2/rs2231137 in combination with IL10/rs3024505 interacted with fiber intake in relation to risk of CRC (P(int) = 0.0007 and 0.009). CONCLUSIONS Our results suggest that the ABC transporters P-glycoprotein/multidrug resistance 1 and BRCP, in cooperation with IL-10, are involved in the biological mechanism underlying the protective effect of fiber intake in relation to CRC. These results should be replicated in other cohorts to rule out chance findings.
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Affiliation(s)
- Tine Iskov Kopp
- National Food Institute, Technical University of Denmark , Søborg , Denmark
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13
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Evidence for P-Glycoprotein Involvement in Cell Volume Regulation Using Coulter Sizing in Flow Cytometry. Int J Mol Sci 2015; 16:14318-37. [PMID: 26114386 PMCID: PMC4519844 DOI: 10.3390/ijms160714318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/06/2015] [Accepted: 05/14/2015] [Indexed: 12/13/2022] Open
Abstract
The regulation of cell volume is an essential function that is coupled to a variety of physiological processes such as receptor recycling, excitability and contraction, cell proliferation, migration, and programmed cell death. Under stress, cells undergo emergency swelling and respond to such a phenomenon with a regulatory volume decrease (RVD) where they release cellular ions, and other osmolytes as well as a concomitant loss of water. The link between P-glycoprotein, a transmembrane transporter, and cell volume regulation is controversial, and changes in cells volume are measured using microscopy or electrophysiology. For instance, by using the patch-clamp method, our team demonstrated that chloride currents activated in the RVD were more intense and rapid in a breast cancer cell line overexpressing the P-glycoprotein (P-gp). The Cell Lab Quanta SC is a flow cytometry system that simultaneously measures electronic volume, side scatter and three fluorescent colors; altogether this provides unsurpassed population resolution and accurate cell counting. Therefore, here we propose a novel method to follow cellular volume. By using the Coulter-type channel of the cytometer Cell Lab Quanta SC MPL (multi-platform loading), we demonstrated a role for the P-gp during different osmotic treatments, but also a differential activity of the P-gp through the cell cycle. Altogether, our data strongly suggests a role of P-gp in cell volume regulation.
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14
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Souza PS, Madigan JP, Gillet JP, Kapoor K, Ambudkar SV, Maia RC, Gottesman MM, Fung KL. Expression of the multidrug transporter P-glycoprotein is inversely related to that of apoptosis-associated endogenous TRAIL. Exp Cell Res 2015; 336:318-28. [PMID: 26101157 DOI: 10.1016/j.yexcr.2015.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 12/27/2022]
Abstract
Multidrug resistance (MDR) has been associated with expression of ABC transporter genes including P-glycoprotein (Pgp, MDR1, ABCB1). However, deregulation of apoptotic pathways also renders cells resistant to chemotherapy. To discover apoptosis-related genes affected by Pgp expression, we used the HeLa MDR-off system. We found that using doxycycline to control Pgp expression has a significant advantage over tetracycline, in that doxycycline caused less endogenous gene expression modification/perturbation, and was more potent than tetracycline in suppressing Pgp expression. Cells overexpressing Pgp have lower TNFSF10 (TRAIL) expression than their parental cells. Controlled downregulation of Pgp increased endogenous TRAIL protein expression. Also, ectopic overexpression of TRAIL in Pgp-positive cells was associated with a reduction in Pgp levels. However, cells expressing a functionally defective mutant Pgp showed an increase in TRAIL expression, suggesting that Pgp function is required for TRAIL suppression. Cells in which Pgp is knocked down by upregulation of TRAIL expression are less susceptible to TRAIL ligand (sTRAIL)-induced apoptosis. Our findings reveal an inverse correlation between functional Pgp and endogenous TRAIL expression. Pgp function plays an important role in the TRAIL-mediated apoptosis pathway by regulating endogenous TRAIL expression and the TRAIL-mediated apoptosis pathway in MDR cancer cells.
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Affiliation(s)
- Paloma S Souza
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA; Laboratório de Hemato-Oncologia Celular e Molecular, Programa de Pesquisa em Hemato-Oncologia Molecular, Instituto Nacional de Câncer (INCA), Brazil
| | - James P Madigan
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA
| | - Jean-Pierre Gillet
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA
| | - Khyati Kapoor
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA
| | - Raquel C Maia
- Laboratório de Hemato-Oncologia Celular e Molecular, Programa de Pesquisa em Hemato-Oncologia Molecular, Instituto Nacional de Câncer (INCA), Brazil
| | - Michael M Gottesman
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA.
| | - King Leung Fung
- Laboratory of Cell Biology, National Cancer Institute, Center for Cancer Research, National Institutes of Health, USA
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15
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Inhibition or knockdown of ABC transporters enhances susceptibility of adult and juvenile schistosomes to Praziquantel. PLoS Negl Trop Dis 2014; 8:e3265. [PMID: 25330312 PMCID: PMC4199547 DOI: 10.1371/journal.pntd.0003265] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 09/10/2014] [Indexed: 12/01/2022] Open
Abstract
Parasitic flatworms of the genus Schistosoma cause schistosomiasis, a neglected tropical disease that affects hundreds of millions. Treatment of schistosomiasis depends almost entirely on the drug praziquantel (PZQ). Though essential to treating and controlling schistosomiasis, a major limitation of PZQ is that it is not active against immature mammalian-stage schistosomes. Furthermore, there are reports of field isolates with heritable reductions in PZQ susceptibility, and researchers have selected for PZQ-resistant schistosomes in the laboratory. P-glycoprotein (Pgp; ABCB1) and other ATP binding cassette (ABC) transporters remove a wide variety of toxins and xenobiotics from cells, and have been implicated in multidrug resistance (MDR). Changes in ABC transporter structure or expression levels are also associated with reduced drug susceptibility in parasitic helminths, including schistosomes. Here, we show that the activity of PZQ against schistosome adults and juveniles ex vivo is potentiated by co-administration of either the highly potent Pgp inhibitor tariquidar or combinations of inhibitors targeting multiple ABC multidrug transporters. Adult worms exposed to sublethal PZQ concentrations remain active, but co-administration of ABC transporter inhibitors results in complete loss of motility and disruption of the tegument. Notably, juvenile schistosomes (3–4 weeks post infection), normally refractory to 2 µM PZQ, become paralyzed when transporter inhibitors are added in combination with the PZQ. Experiments using the fluorescent PZQ derivative (R)-PZQ-BODIPY are consistent with the transporter inhibitors increasing effective intraworm concentrations of PZQ. Adult worms in which expression of ABC transporters has been suppressed by RNA interference show increased responsiveness to PZQ and increased retention of (R)-PZQ-BODIPY consistent with an important role for these proteins in setting levels of PZQ susceptibility. These results indicate that parasite ABC multidrug transporters might serve as important targets for enhancing the action of PZQ. They also suggest a potentially novel and readily-available strategy for overcoming reduced PZQ susceptibility of schistosomes. Schistosomes are parasitic flatworms that cause schistosomiasis, a tropical disease affecting hundreds of millions worldwide. Praziquantel (PZQ) is the current drug of choice against schistosomiasis, and, indeed, is the only approved antischistosomal treatment available in most parts of the world. Though effective overall, PZQ has limitations, including its lack of activity against immature schistosomes. Furthermore, reported cure rates in the field are often below optimal levels, and there is increasing evidence that schistosomes can become resistant to the drug. ABC transporters such as P-glycoprotein are efflux transporters that mediate detoxification of cells via removal of toxins and xenobiotics, including drugs. They underlie multidrug resistance in mammalian cells, and are also associated with drug resistance in parasitic worms, including schistosomes. Here, we show that compounds that inhibit these efflux transporters potentiate the activity of PZQ against schistosomes, including normally PZQ-insensitive juvenile worms. Similarly, suppressing expression of these transporters also increases adult worm responsiveness to PZQ. Our experiments may provide insights into the role of these drug transporters in PZQ action, and could also translate into new therapeutic strategies for augmenting treatment of schistosome infections and overcoming drug resistance.
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16
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Greenberg RM. Schistosome ABC multidrug transporters: From pharmacology to physiology. INTERNATIONAL JOURNAL FOR PARASITOLOGY-DRUGS AND DRUG RESISTANCE 2014; 4:301-9. [PMID: 25516841 PMCID: PMC4266782 DOI: 10.1016/j.ijpddr.2014.09.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The genuine and hypothesized roles of schistosome ABC transporters are reviewed. Evidence suggesting a role for transporters in schistosome drug susceptibility is discussed. Potential roles of ABC transporters in normal schistosome biology are outlined.
Praziquantel (PZQ) is essentially the only drug currently available for treatment and control of schistosomiasis, a disease affecting hundreds of millions worldwide. Though highly effective overall, PZQ has limitations, most notably its significant lack of activity against immature schistosomes. Furthermore, the availability of only a single drug for a disease of this magnitude makes reports of PZQ-resistant isolates particularly troubling. ATP-binding cassette (ABC) multidrug transporters such as P-glycoprotein (Pgp; ABCB1) are efflux transporters that underlie multidrug resistance (MDR); changes in their expression or structure are also associated with drug resistance in parasites, including helminths. This review will discuss the role these transporters might play in modulating schistosome susceptibility to PZQ, and the implications for developing new or repurposed treatments that enhance the efficacy of PZQ. However, in addition to influencing drug susceptibility, ABC transporters play important roles in several critical physiological functions such as excretion and maintenance of permeability barriers. They also transport signaling molecules with high affinity, and several lines of evidence implicate mammalian transporters in a diverse array of physiological functions, including regulation of immune responses. Like their mammalian counterparts, schistosome ABC transporters appear to be involved in functions critical to the parasite, including excretory activity and reproduction, and we hypothesize that they underlie at least some aspects of parasite–host interactions. Thus, in addition to their potential as targets for enhancers of PZQ susceptibility, these transporters might also serve as candidate targets for agents that disrupt the parasite life cycle and act as antischistosomals on their own.
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Affiliation(s)
- Robert M Greenberg
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, PA 19104, USA
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17
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Sun YF, Wink M. Tetrandrine and fangchinoline, bisbenzylisoquinoline alkaloids from Stephania tetrandra can reverse multidrug resistance by inhibiting P-glycoprotein activity in multidrug resistant human cancer cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:1110-1119. [PMID: 24856768 DOI: 10.1016/j.phymed.2014.04.029] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 02/17/2014] [Accepted: 04/18/2014] [Indexed: 06/03/2023]
Abstract
The overexpression of ABC transporters is a common reason for multidrug resistance (MDR) in cancer cells. In this study, we found that the isoquinoline alkaloids tetrandrine and fangchinoline from Stephania tetrandra showed a significant synergistic cytotoxic effect in MDR Caco-2 and CEM/ADR5000 cancer cells in combination with doxorubicin, a common cancer chemotherapeutic agent. Furthermore, tetrandrine and fangchinoline increased the intracellular accumulation of the fluorescent P-glycoprotein (P-gp) substrate rhodamine 123 (Rho123) and inhibited its efflux in Caco-2 and CEM/ADR5000 cells. In addition, tetrandrine and fangchinoline significantly reduced P-gp expression in a concentration-dependent manner. These results suggest that tetrandrine and fangchinoline can reverse MDR by increasing the intracellular concentration of anticancer drugs, and thus they could serve as a lead for developing new drugs to overcome P-gp mediated drug resistance in clinic cancer therapy.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- ATP-Binding Cassette Transporters/genetics
- ATP-Binding Cassette Transporters/metabolism
- Alkaloids/chemistry
- Alkaloids/isolation & purification
- Alkaloids/pharmacology
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Benzylisoquinolines/chemistry
- Benzylisoquinolines/isolation & purification
- Benzylisoquinolines/pharmacology
- Cell Line, Tumor
- Cell Survival/drug effects
- Doxorubicin/pharmacology
- Drug Resistance, Multiple/drug effects
- Drug Resistance, Neoplasm/drug effects
- Gene Expression Regulation, Neoplastic
- Humans
- Plants, Medicinal
- Rhodamine 123/metabolism
- Stephania tetrandra/chemistry
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Affiliation(s)
- Yan Fang Sun
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany; College of Science, Liaoning Technical University, Fuxin, Liaoning 123000, China.
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany.
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18
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Choong PFM, Rüdiger HA. Prognostic factors in soft-tissue sarcomas: what have we learnt? Expert Rev Anticancer Ther 2014; 8:139-46. [DOI: 10.1586/14737140.8.2.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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19
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Zhang Y, Wang Q, Niu S, Liu J, Zhang L. Pien Tze Huang induces apoptosis in multidrug‑resistant U2OS/ADM cells via downregulation of Bcl‑2, survivin and P-gp and upregulation of Bax. Oncol Rep 2013; 31:763-70. [PMID: 24337940 DOI: 10.3892/or.2013.2916] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 11/26/2013] [Indexed: 11/05/2022] Open
Abstract
Pien Tze Huang (PZH) is a well-known traditional Chinese formula that was first prescribed by a royal physician in the Ming Dynasty. PZH has been used to treat various types of cancers including osteosarcoma. Previous studies have shown that PZH may effectively inhibit osteosarcoma cell growth in vivo and in vitro via induction of apoptosis and inhibition of migratory and invasive abilities. However, little is known regarding the effects of PZH on osteosarcomas that are resistant to chemotherapy, which has emerged as a major clinical problem. In the present study, the cellular effects of PZH on multidrug-resistant U2OS/ADM human osteosarcoma cells were investigated. Our results showed that PZH reduced cell viability in a dose- and time-dependent manner and arrested cells in the G2/M phase of the cell cycle, suggesting that PZH inhibits the proliferation of U2OS/ADM cells. Hoechst 33258 staining and Annexin V/propidium iodide double staining revealed typical nuclear features of apoptosis, and treatment with PZH increased the proportion of apoptotic Annexin V-positive cells in a dose-dependent manner. Further experiments demonstrated that apoptosis induction by PZH was accompanied by downregulation of Bcl-2 and survivin and upregulation of Bax. In addition, following treatment with PZH, intracellular Rhodamine 123 accumulation was increased and the expression of P-gp was significantly suppressed. Taken together, these results provide a possible molecular mechanism for the anticancer effect of PZH on U2OS/ADM cells and suggest that PZH may be a potent therapeutic agent for drug-resistant osteosarcoma.
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Affiliation(s)
- Yan Zhang
- College of Osteopedics and Traumatology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Qihong Wang
- First Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350004, P.R. China
| | - Susheng Niu
- College of Osteopedics and Traumatology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Junning Liu
- College of Osteopedics and Traumatology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Li Zhang
- College of Osteopedics and Traumatology, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
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20
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Multidrug resistance in chronic myeloid leukaemia: how much can we learn from MDR-CML cell lines? Biosci Rep 2013; 33:BSR20130067. [PMID: 24070327 PMCID: PMC3839595 DOI: 10.1042/bsr20130067] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The hallmark of CML (chronic myeloid leukaemia) is the BCR (breakpoint cluster region)-ABL fusion gene. CML evolves through three phases, based on both clinical and pathological features: a chronic phase, an accelerated phase and blast crisis. TKI (tyrosine kinase inhibitors) are the treatment modality for patients with chronic phase CML. The therapeutic potential of the TKI imatinib is affected by BCR-ABL dependent an independent mechanisms. Development of MDR (multidrug resistance) contributes to the overall clinical resistance. MDR involves overexpression of ABC -transporters (ATP-binding-cassette transporter) among other features. MDR studies include the analysis of cancer cell lines selected for resistance. CML blast crisis is accompanied by increased resistance to apoptosis. This work reviews the role played by the influx transporter OCT1 (organic cation transporter 1), by efflux ABC transporters, molecules involved in the modulation of apoptosis (p53, Bcl-2 family, CD95, IAPs (inhibitors of apoptosis protein)], Hh and Wnt/β-catenin pathways, cytoskeleton abnormalities and other features described in leukaemic cells of clinical samples and CML cell lines. An MDR cell line, Lucena-1, generated from K562 by stepwise exposure to vincristine, was used as our model and some potential anticancer drugs effective against the MDR cell line and patients' samples are presented.
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21
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Kim TH, Shin YJ, Won AJ, Lee BM, Choi WS, Jung JH, Chung HY, Kim HS. Resveratrol enhances chemosensitivity of doxorubicin in multidrug-resistant human breast cancer cells via increased cellular influx of doxorubicin. Biochim Biophys Acta Gen Subj 2013; 1840:615-25. [PMID: 24161697 DOI: 10.1016/j.bbagen.2013.10.023] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 10/13/2013] [Accepted: 10/15/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND Multidrug resistance is a major problem in the treatment of breast cancer, and a number of studies have attempted to find an efficient strategy with which to overcome it. In this study, we investigate the synergistic anticancer effects of resveratrol (RSV) and doxorubicin (Dox) against human breast cancer cell lines. METHODS The synergistic effects of RSV on chemosensitivity were examined in Dox-resistant breast cancer (MCF-7/adr) and MDA-MB-231 cells. In vivo experiments were performed using a nude mouse xenograft model to investigate the combined sensitization effect of RSV and Dox. RESULTS AND CONCLUSION RSV markedly enhanced Dox-induced cytotoxicity in MCF-7/adr and MDA-MB-231 cells. Treatment with a combination of RSV and Dox significantly increased the cellular accumulation of Dox by down-regulating the expression levels of ATP-binding cassette (ABC) transporter genes, MDR1, and MRP1. Further in vivo experiments in the xenograft model revealed that treatment with a combination of RSV and Dox significantly inhibited tumor volume by 60%, relative to the control group. GENERAL SIGNIFICANCE These results suggest that treatment with a combination of RSV and Dox would be a helpful strategy for increasing the efficacy of Dox by promoting an intracellular accumulation of Dox and decreasing multi-drug resistance in human breast cancer cells.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Animals
- Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Apoptosis/drug effects
- Blotting, Western
- Breast Neoplasms/drug therapy
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Cell Proliferation/drug effects
- Doxorubicin/administration & dosage
- Drug Resistance, Multiple/drug effects
- Drug Resistance, Neoplasm/drug effects
- Drug Synergism
- Female
- Humans
- Mice
- Mice, Inbred BALB C
- Multidrug Resistance-Associated Proteins/genetics
- Multidrug Resistance-Associated Proteins/metabolism
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Resveratrol
- Reverse Transcriptase Polymerase Chain Reaction
- Stilbenes/administration & dosage
- Tissue Distribution
- Tumor Cells, Cultured
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Affiliation(s)
- Tae Hyung Kim
- Laboratory of Molecular Toxicology, College of Pharmacy, Pusan National University, San 30, Jangjeon-dong, Geumjeung-gu, Busan 609-735, Republic of Korea; Division of Toxicology, College of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
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22
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Galski H, Oved-Gelber T, Simanovsky M, Lazarovici P, Gottesman MM, Nagler A. P-glycoprotein-dependent resistance of cancer cells toward the extrinsic TRAIL apoptosis signaling pathway. Biochem Pharmacol 2013; 86:584-96. [PMID: 23774624 DOI: 10.1016/j.bcp.2013.06.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/04/2013] [Accepted: 06/06/2013] [Indexed: 11/17/2022]
Abstract
The TNF-related apoptosis-inducing ligand (TRAIL or Apo2L) preferentially cause apoptosis of malignant cells in vitro and in vivo without severe toxicity. Therefore, TRAIL or agonist antibodies to the TRAIL DR4 and DR5 receptors are used in cancer therapy. However, many malignant cells are intrinsically resistant or acquire resistance to TRAIL. It has been previously proposed that the multidrug transporter P-glycoprotein (Pgp) might play a role in resistance of cells to intrinsic apoptotic pathways by interfering with components of ceramide metabolism or by modulating the electrochemical gradient across the plasma membrane. In this study we investigated whether Pgp also confers resistance toward extrinsic death ligands of the TNF family. To this end we focused our study on HeLa cells carrying a tetracycline-repressible plasmid system which shuts down Pgp expression in the presence of tetracycline. Our findings demonstrate that expression of Pgp is a significant factor conferring resistance to TRAIL administration, but not to other death ligands such as TNF-α and Fas ligand. Moreover, blocking Pgp transport activity sensitizes the malignant cells toward TRAIL. Therefore, Pgp transport function is required to confer resistance to TRAIL. Although the resistance to TRAIL-induced apoptosis is Pgp specific, TRAIL itself is not a direct substrate of Pgp. Pgp expression has no effect on the level of the TRAIL receptors DR4 and DR5. These findings might have clinical implications since the combination of TRAIL therapy with administration of Pgp modulators might sensitize TRAIL resistant tumors.
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Affiliation(s)
- Hanan Galski
- Laboratory of Molecular Immunology, Division of Hematology, Chaim Sheba Medical Center, Tel Hashomer, Israel.
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23
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Tran TP, Kim HG, Choi JH, Na MK, Jeong HG. Reversal of P-glycoprotein-mediated multidrug resistance is induced by mollugin in MCF-7/adriamycin cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:622-631. [PMID: 23466342 DOI: 10.1016/j.phymed.2013.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/03/2012] [Accepted: 01/27/2013] [Indexed: 06/01/2023]
Abstract
P-glycoprotein (P-gp), an important efflux transporter, is encoded by the MDR1 class of genes and is a central element of the multidrug resistance (MDR) phenomenon in cancer cells. In the present study, we investigated whether mollugin, purified from roots of Rubica cordifolia L., down-regulated MDR1 expression in MCF-7/adriamycin (MCF-7/adr) cells, a human breast multidrug-resistant cancer cell line. Mollugin treatment significantly inhibited MDR1 expression by blocking MDR1 transcription. Mollugin treatment also significantly increased intracellular accumulation of the fluorescently-tagged P-gp substrate, rhodamine-123. The suppression of MDR1 promoter activity and protein expression was mediated through mollugin-induced activation of AMP-activated protein kinase (AMPK). Furthermore, mollugin inhibited MDR1 expression through the suppression of NF-κB and CREB activation. Interestingly, mollugin also inhibited COX-2 expression. These results suggest that mollugin treatment enhanced suppression of P-gp expression by inhibiting the NF-κB signaling pathway and COX-2 expression, as well as attenuating CRE transcriptional activity through AMPK activation.
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Affiliation(s)
- Thu Phuong Tran
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 305-764, South Korea
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Greenberg RM. ABC multidrug transporters in schistosomes and other parasitic flatworms. Parasitol Int 2013; 62:647-53. [PMID: 23474413 DOI: 10.1016/j.parint.2013.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 02/14/2013] [Accepted: 02/18/2013] [Indexed: 12/19/2022]
Abstract
Schistosomiasis, a neglected tropical disease affecting hundreds of millions, is caused by parasitic flatworms of the genus Schistosoma. Treatment and control of schistosomiasis relies almost exclusively on a single drug, praziquantel (PZQ), a dangerous situation for a disease of this magnitude. Though PZQ is highly effective overall, it has drawbacks, and reports of worms showing PZQ resistance, either induced in the laboratory or isolated from the field, are disconcerting. Multidrug transporters underlie multidrug resistance (MDR), a phenomenon in which resistance to a single drug is accompanied by unexpected cross-resistance to several structurally unrelated compounds. Some of the best studied multidrug transporters are members of the ancient and very large ATP-binding cassette (ABC) superfamily of efflux transporters. ABC multidrug transporters such as P-glycoprotein (Pgp; ABCB1) are also associated with drug resistance in parasites, including helminths such as schistosomes. In addition to their association with drug resistance, however, ABC transporters also function in a wide variety of physiological processes in metazoans. In this review, we examine recent studies that help define the role of schistosome ABC transporters in regulating drug susceptibility, and in normal schistosome physiology, including reproduction and excretory activity. We postulate that schistosome ABC transporters could be useful targets for compounds that enhance the effectiveness of current therapeutics as well as for agents that act as antischistosomals on their own.
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Affiliation(s)
- Robert M Greenberg
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA 19104, USA.
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25
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Singh M, Singh U, Mathur N, Shukla Y. Expression of P-glycoprotein is Positively Correlated with p53 in Human Papilloma Virus Induced Squamous Intraepithelial Lesions of Uterine Cervix: Poor Prognosis Association. Asian Pac J Cancer Prev 2012; 13:6039-45. [DOI: 10.7314/apjcp.2012.13.12.6039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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26
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Docetaxel and 5-fluorouracil induce human p53 tumor suppressor gene transcription via a short sequence at core promoter element. Toxicol In Vitro 2012; 26:678-85. [DOI: 10.1016/j.tiv.2012.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2011] [Revised: 02/24/2012] [Accepted: 03/07/2012] [Indexed: 11/19/2022]
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Balaguer TM, Gómez-Martínez A, García-Morales P, Lacueva J, Calpena R, Reverte LR, Riquelme NL, Martinez-Lacaci I, Ferragut JA, Saceda M. Dual regulation of P-glycoprotein expression by trichostatin A in cancer cell lines. BMC Mol Biol 2012; 13:25. [PMID: 22846052 PMCID: PMC3441908 DOI: 10.1186/1471-2199-13-25] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 06/27/2012] [Indexed: 02/05/2023] Open
Abstract
Background It has been reported that the histone deacetylase inhibitor (iHDAc) trichostatin A (TSA) induces an increase in MDR1 gene transcription (ABCB1). This result would compromise the use of iHDACs in combination with other cytotoxic agents that are substrates of P-glycoprotein (Pgp). It has also been reported the use of alternative promoters by the ABCB1 gene and the existence of a translational control of Pgp protein. Finally, the ABCB1 gene is located in a genetic locus with the nested gene RUNDC3B in the complementary DNA strand, raising the possibility that RUNDC3B expression could interfere with ABCB1 alternative promoter regulation. Methods A combination of RT-PCR, real time RT-PCR, Western blot and drug accumulation assays by flow cytometry has been used in this study. Results The iHDACs-induced increase in MDR1 mRNA levels is not followed by a subsequent increase in Pgp protein levels or activity in several pancreatic and colon carcinoma cell lines, suggesting a translational control of Pgp in these cell lines. In addition, the MDR1 mRNA produced in these cell lines is shorter in its 5′ end that the Pgp mRNA produced in cell lines expressing Pgp protein. The different size of the Pgp mRNA is due to the use of alternative promoters. We also demonstrate that these promoters are differentially regulated by TSA. The translational blockade of Pgp mRNA in the pancreatic carcinoma cell lines could be related to alterations in the 5′ end of the MDR1 mRNA in the Pgp protein expressing cell lines. In addition, we demonstrate that the ABCB1 nested gene RUNDC3B expression although upregulated by TSA is independent of the ABCB1 alternative promoter used. Conclusions The results show that the increase in MDR1 mRNA expression after iHDACs treatment is clinically irrelevant since this mRNA does not render an active Pgp protein, at least in colon and pancreatic cancer cell lines. Furthermore, we demonstrate that TSA in fact, regulates differentially both ABCB1 promoters, downregulating the upstream promoter that is responsible for active P-glycoprotein expression. These results suggest that iHDACs such as TSA may in fact potentiate the effects of antitumour drugs that are substrates of Pgp. Finally, we also demonstrate that TSA upregulates RUNDC3B mRNA independently of the ABCB1 promoter in use.
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Affiliation(s)
- Trinidad Mata Balaguer
- Fundación para la Investigación Biomédica del Hospital Universitario de Elche, Elche, Alicante, 03203, Spain
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Curiel TJ. Immunotherapy: a useful strategy to help combat multidrug resistance. Drug Resist Updat 2012; 15:106-13. [PMID: 22483359 DOI: 10.1016/j.drup.2012.03.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Revised: 01/24/2012] [Accepted: 03/13/2012] [Indexed: 12/22/2022]
Abstract
Multidrug resistance (MDR) renders cancer cells relatively invulnerable to treatment with many standard cytotoxic anti-cancer agents. Cancer immunotherapy could be an important adjunct for other strategies to treat MDR positive cancers, as resistance to immunotherapy generally is unrelated to mechanisms of resistance to cytotoxic agents. Immunotherapy to combat MDR positive tumors could use any of the following strategies: direct immune attack against MDR positive cells, using MDR as an immune target to deliver cytotoxic agents, capitalization on other immune properties of MDR positive cells, or conditional immunotoxins expressed under MDR control. Additional insights into the immunogenic potential of some cytotoxic agents can also be brought to bear on these strategies. This review will highlight key concepts in cancer immunotherapy and illustrate immune principles and strategies that have been or could be used to help destroy MDR positive tumor cells, either alone or in rational combinations.
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Affiliation(s)
- Tyler J Curiel
- University of Texas Health Science Center, Cancer Therapy and Research Center, STRF Adult Cancer Program MC 8252, 8403 Floyd Curl Drive, San Antonio, TX 78229-3904, United States.
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Scheiner MAM, da Cunha Vasconcelos F, da Matta RR, Dal Bello Figueira R, Maia RC. ABCB1 genetic variation and P-glycoprotein expression/activity in a cohort of Brazilian acute myeloid leukemia patients. J Cancer Res Clin Oncol 2012; 138:959-69. [PMID: 22358301 DOI: 10.1007/s00432-012-1170-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Accepted: 02/06/2012] [Indexed: 12/22/2022]
Abstract
PURPOSE Polymorphisms in the ABCB1 gene may influence P-glycoprotein (Pgp) expression and/or activity. Because the population in Brazil is markedly heterogeneous, we analyzed the relationship between ABCB1 polymorphisms and Pgp expression/activity in Brazilian acute myeloid leukemia (AML) patients. METHODS Acute myeloid leukemia samples from 109 patients were studied. ABCB1 gene variants rs1128503 (C1236T) and rs1045643 (C3435T) were analyzed by PCR-RFLP assay. Pgp expression and Pgp activity were analyzed by flow cytometry. RESULTS There was a similar distribution of Pgp expression and activity on polymorphisms C1236T, C1236C, and T1236T for exon 12, and C3435T, C3435C, and T3435T for exon 26. An exception was observed in the lowest ratio of mean fluorescence intensity (MFI) median for Pgp expression in the TT genotype for both studied exons, and its correspondence to a low MFI median for Pgp activity. Pgp expression did not show impact on the response to remission induction therapy, but the MFI median of Pgp expression in the remission failure group was higher than that of the complete remission (CR) group of patients (p = 0.04). Overall survival (OS) was significantly influenced by CR (p = 0.0001). Better 5-year OS and 5-year event-free survival rates (p = 0.04 and p = 0.007, respectively) were achieved in patients presenting the genetic variant CC in exon 12 followed by those presenting the variant CT in exon 26 (p = 0.001). CONCLUSIONS Polymorphisms in the ABCB1 gene and the levels of Pgp expression could be useful to identify prognostic in AML patients.
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Affiliation(s)
- Marcos Antonio Mauricio Scheiner
- Laboratório de Hemato-Oncologia Celular e Molecular, Programa de Pesquisa em Hemato-Oncologia Molecular, Instituto Nacional de Câncer, Praça Cruz Vermelha 23, 6º andar, Centro, Rio de Janeiro, RJ CEP 20230-130, Brazil
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Safina G. Application of surface plasmon resonance for the detection of carbohydrates, glycoconjugates, and measurement of the carbohydrate-specific interactions: A comparison with conventional analytical techniques. A critical review. Anal Chim Acta 2012; 712:9-29. [DOI: 10.1016/j.aca.2011.11.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 10/07/2011] [Accepted: 11/04/2011] [Indexed: 12/16/2022]
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Kasinathan RS, Morgan WM, Greenberg RM. Genetic knockdown and pharmacological inhibition of parasite multidrug resistance transporters disrupts egg production in Schistosoma mansoni. PLoS Negl Trop Dis 2011; 5:e1425. [PMID: 22163059 PMCID: PMC3232217 DOI: 10.1371/journal.pntd.0001425] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Accepted: 10/27/2011] [Indexed: 12/17/2022] Open
Abstract
P-glycoprotein (Pgp) and multidrug resistance-associated proteins (MRPs) are ATP-dependent transporters involved in efflux of toxins and xenobiotics from cells. When overexpressed, these transporters can mediate multidrug resistance (MDR) in mammalian cells, and changes in Pgp expression and sequence are associated with drug resistance in helminths. In addition to the role they play in drug efflux, MDR transporters are essential components of normal cellular physiology, and targeting them may prove a useful strategy for development of new therapeutics or of compounds that enhance the efficacy of current anthelmintics. We previously showed that expression of Schistosoma mansoni MDR transporters increases in response to praziquantel (PZQ), the current drug of choice against schistosomiasis, and that reduced PZQ sensitivity correlates with higher levels of these parasite transporters. We have also shown that PZQ inhibits transport by SMDR2, a Pgp orthologue from S. mansoni, and that PZQ is a likely substrate of SMDR2. Here, we examine the physiological roles of SMDR2 and SmMRP1 (the S. mansoni orthologue of MRP1) in S. mansoni adults, using RNAi to knock down expression, and pharmacological agents to inhibit transporter function. We find that both types of treatments disrupt parasite egg deposition by worms in culture. Furthermore, administration of different MDR inhibitors to S. mansoni-infected mice results in a reduction in egg burden in host liver. These schistosome MDR transporters therefore appear to play essential roles in parasite egg production, and can be targeted genetically and pharmacologically. Since eggs are responsible for the major pathophysiological consequences of schistosomiasis, and since they are also the agents for transmission of the disease, these results suggest a potential strategy for reducing disease pathology and spread. Schistosomes are parasitic flatworms that are the causative agents of schistosomiasis, a major tropical disease. As adults, schistosomes reside within the host vasculature, taking up nutrients, evading host defenses, and expelling wastes and toxins. Multidrug resistance transporters are involved in removal of toxins and foreign compounds, including drugs, from cells. These transporters have broad selectivity, and when upregulated or mutated, can confer resistance to a wide spectrum of drugs against mammalian tumor cells. They are also associated with drug resistance in various parasites, including helminths. In this report, we have used knockdown of expression of these proteins and pharmacological inhibition of their transport function to dissect their physiological role in the schistosome life cycle. We find that either reducing transporter expression or pharmacologically inhibiting transporter function leads to disruption of egg production by adult worms. Eggs deposited within the host are the major cause of disease pathology, and eggs excreted by the host are the means of continuation of the life cycle and transmission of the disease. The capability to interfere with schistosome egg production could have major implications for development of new treatment strategies.
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Affiliation(s)
- Ravi S. Kasinathan
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - William M. Morgan
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Robert M. Greenberg
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Grodzovski I, Lichtenstein M, Galski H, Lorberboum-Galski H. IL-2-granzyme A chimeric protein overcomes multidrug resistance (MDR) through a caspase 3-independent apoptotic pathway. Int J Cancer 2011; 128:1966-80. [PMID: 20568105 DOI: 10.1002/ijc.25527] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
One of the main problems of conventional anticancer therapy is multidrug resistance (MDR), whereby cells acquire resistance to structurally and functionally unrelated drugs following chemotherapeutic treatment. One of the main causes of MDR is overexpression of the P-glycoprotein transporter. In addition to extruding the chemotherapeutic drugs, it also inhibits apoptosis through the inhibition of caspases. To overcome MDR, we constructed a novel chimeric protein, interleukin (IL)-2 granzyme A (IGA), using IL-2 as a targeting moiety and granzyme A as a killing moiety, fused at the cDNA level. IL-2 binds to the high-affinity IL-2 receptor that is expressed in an array of abnormal cells, including malignant cells. Granzyme A is known to cause caspase 3-independent cell death. We show here that the IGA chimeric protein enters the target sensitive and MDR cancer cells overexpressing IL-2 receptor and induces caspase 3-independent cell death. Specifically, after its entry, IGA causes a decrease in the mitochondrial potential, triggers translocation of nm23-H1, a granzyme A-dependent DNase, from the cytoplasm to the nucleus, where it causes single-strand DNA nicks, thus causing cell death. Moreover, IGA is able to overcome MDR and kill cells resistant to chemotherapeutic drugs. We believe that overcoming MDR with targeted molecules such as IGA chimeric protein that causes caspase-independent apoptotic cell death could be applied to many other resistant types of tumors using the appropriate targeting moiety. Thus, this novel class of targeted molecules could open up new vistas in the fight against human cancer.
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Affiliation(s)
- Inna Grodzovski
- Department of Biochemistry and Molecular Biology, Hebrew University, Jerusalem, Israel
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Kasinathan RS, Greenberg RM. Pharmacology and potential physiological significance of schistosome multidrug resistance transporters. Exp Parasitol 2011; 132:2-6. [PMID: 21420955 DOI: 10.1016/j.exppara.2011.03.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 03/11/2011] [Accepted: 03/14/2011] [Indexed: 12/16/2022]
Abstract
Schistosomes are the causative agents of schistosomiasis, a neglected tropical disease affecting hundreds of millions worldwide and a major global health burden. Current control of schistosomiasis depends largely on a single drug, praziquantel (PZQ). One potential physiological target for new antischistosomal drugs is the parasite's excretory system, which removes wastes and xenobiotics. Multidrug resistance (MDR) transporters that are members of the ATP-binding cassette (ABC) superfamily of proteins are ATP-dependent efflux pumps involved in removal of toxins and xenobiotics from cells. They mediate the phenomenon of multidrug resistance, in which cells resistant to one drug show cross-resistance to a broad range of other agents, and are also associated with reduced drug susceptibility in parasitic helminths. In this review, we survey the different types of ABC transporter genes present within the schistosome genome, and examine recent evidence indicating that at least some of these transporters may play a role in fine-tuning susceptibility of schistosomes to PZQ. Disruption of their function may therefore provide a strategy for enhancing drug action or overcoming or attenuating drug resistance. Furthermore, dissection of the roles these transporters may play in normal schistosome physiology could potentially lead to identification of highly "druggable" targets for new antischistosomals.
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Affiliation(s)
- Ravi S Kasinathan
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA 19104, USA
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Safina G, Duran IB, Alasel M, Danielsson B. Surface plasmon resonance for real-time study of lectin-carbohydrate interactions for the differentiation and identification of glycoproteins. Talanta 2011; 84:1284-90. [PMID: 21641439 DOI: 10.1016/j.talanta.2011.01.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 01/09/2011] [Accepted: 01/14/2011] [Indexed: 11/25/2022]
Abstract
A study of specific interactions between lectins and glycoproteins has been carried out using surface plasmon resonance (SPR) in a flow-injection mode. Lectins were covalently immobilised on the surfaces of the microfluidic sensor chip via amine coupling and serum glycoproteins were injected into the flow channels. Specific lectin-glycoprotein interactions caused the shift of refractive index proportional to the mass concentration accumulated on the channel surface. Lectins showed different affinity to the tested glycoproteins and each glycoprotein displayed its own lectin-binding pattern. It is possible to distinguish and identify even glycoproteins with similar sugar structures by simple and quick screening. The working conditions of the assay were optimised. The lectin-based SPR made it possible to carry out the label-free detection of glycoproteins within a broad concentration range with a good linearity. Regeneration conditions for the surface of the sensor chip were found and optimised. Combination of 10mM HCl and 10mM glycine-HCl (pH 2.5) removes the bound glycoproteins from the lectin surface without damaging it. The kinetic and affinity parameters of lectin-glycoprotein binding were evaluated. The proposed method was tested on human glycosylated serum. Combination of the lectin panel with SPR is suitable both for specific screening and for sensitive assay of serum glycoproteins.
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Affiliation(s)
- Gulnara Safina
- Department of Pure and Applied Biochemistry, Lund University, Box 124, 221 00 Lund, Sweden.
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Patutina OA, Mironova NL, Popova NA, Kaledin VI, Nikolin VP, Vlassov VV, Zenkova MA. The siRNA targeted to mdr1b and mdr1a mRNAs in vivo sensitizes murine lymphosarcoma to chemotherapy. BMC Cancer 2010; 10:204. [PMID: 20470373 PMCID: PMC2886043 DOI: 10.1186/1471-2407-10-204] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Accepted: 05/14/2010] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND One of the main obstacles for successful cancer polychemotherapy is multiple drug resistance phenotype (MDR) acquired by tumor cells. Currently, RNA interference represents a perspective strategy to overcome MDR via silencing the genes involved in development of this deleterious phenotype (genes of ABC transporters, antiapoptotic genes, etc.). METHODS In this study, we used the siRNAs targeted to mdr1b, mdr1a, and bcl-2 mRNAs to reverse the MDR of tumors and increase tumor sensitivity to chemotherapeutics. The therapy consisting in ex vivo or in vivo application of mdr1b/1a siRNA followed by cyclophosphamide administration was studied in the mice bearing RLS40 lymphosarcoma, displaying high resistance to a wide range of cytostatics. RESULTS Our data show that a single application of mdr1b/1a siRNA followed by treatment with conventionally used cytostatics results in more than threefold decrease in tumor size as compared with the control animals receiving only cytostatics. CONCLUSIONS In perspective, mdr1b/1a siRNA may become a well-reasoned adjuvant tool in the therapy of MDR malignancies.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/genetics
- Animals
- Antineoplastic Agents, Alkylating/pharmacology
- Cyclophosphamide/pharmacology
- Drug Resistance, Neoplasm/genetics
- Gene Expression Regulation, Neoplastic
- Genetic Therapy/methods
- Genotype
- Lymphoma, Non-Hodgkin/drug therapy
- Lymphoma, Non-Hodgkin/genetics
- Lymphoma, Non-Hodgkin/metabolism
- Lymphoma, Non-Hodgkin/pathology
- Lymphoma, Non-Hodgkin/therapy
- Male
- Mice
- Mice, Inbred CBA
- Phenotype
- RNA Interference
- RNA, Messenger/metabolism
- RNA, Small Interfering/metabolism
- Time Factors
- Transfection
- Tumor Burden
- Tumor Cells, Cultured
- ATP-Binding Cassette Sub-Family B Member 4
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Affiliation(s)
- Olga A Patutina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 8, Novosibirsk, 630090 Russia
| | - Nadezda L Mironova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 8, Novosibirsk, 630090 Russia
| | - Nelly A Popova
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 10, Novosibirsk, 630090 Russia
| | - Vasily I Kaledin
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 10, Novosibirsk, 630090 Russia
| | - Valery P Nikolin
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 10, Novosibirsk, 630090 Russia
| | - Valentin V Vlassov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 8, Novosibirsk, 630090 Russia
| | - Marina A Zenkova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Lavrentiev av. 8, Novosibirsk, 630090 Russia
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Yakovleva ME, Safina GR, Danielsson B. A study of glycoprotein–lectin interactions using quartz crystal microbalance. Anal Chim Acta 2010; 668:80-5. [DOI: 10.1016/j.aca.2009.12.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2009] [Revised: 12/01/2009] [Accepted: 12/07/2009] [Indexed: 11/29/2022]
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Roy KR, Reddy GV, Maitreyi L, Agarwal S, Achari C, Vali S, Reddanna P. Celecoxib inhibits MDR1 expression through COX-2-dependent mechanism in human hepatocellular carcinoma (HepG2) cell line. Cancer Chemother Pharmacol 2009; 65:903-11. [PMID: 19685055 DOI: 10.1007/s00280-009-1097-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Accepted: 07/23/2009] [Indexed: 12/21/2022]
Abstract
The role of COX-2 in the regulation of the expression of MDR1, a P-glycoprotein involved in hepatocellular carcinoma cell line, HepG2, was studied in the present investigation. Celecoxib, a selective inhibitor of COX-2, at 25 microM concentration increased the accumulation of doxorubicin in HepG2 cells and enhanced the sensitivity of the cells to doxorubicin by tenfold. The induction of MDR1 expression by PGE2 and its downregulation by celecoxib or by COX-2 knockdown suggests that the enhanced sensitivity of HepG2 cells to doxorubicin by celecoxib is mediated by the downregulation of MDR1 expression, through COX-2-dependent mechanism. Further studies revealed the involvement of AP-1 in the celecoxib-induced downregulation of MDR1 expression. These experimental studies correlated well with in silico predictions and further suggested the inactivation of the signal transduction pathways involving ERK, JNK and p38. The present study thus demonstrates the usefulness of COX-2 intervention in overcoming the drug resistance in HepG2 cells.
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Affiliation(s)
- Karnati R Roy
- Department of Animal Sciences, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
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Donnenberg VS, Meyer EM, Donnenberg AD. Measurement of multiple drug resistance transporter activity in putative cancer stem/progenitor cells. Methods Mol Biol 2009; 568:261-279. [PMID: 19582433 PMCID: PMC4165075 DOI: 10.1007/978-1-59745-280-9_17] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Multiple drug resistance, mediated by the expression and activity of ABC-transporters, is a major obstacle to antineoplastic therapy. Normal tissue stem cells and their malignant counterparts share MDR transporter activity as a major mechanism of self-protection. Although MDR activity is upregulated in response to substrate chemotherapeutic agents, it is also constitutively expressed on both normal tissue stem cells and a subset of tumor cells prior to the initiation of therapy, representing a built-in obstacle to therapeutic ratio. Constitutive and induced MDR activity can be detected in cellular subsets of disaggregated tissues, using the fluorescent substrates Rhodamine 123 and Hoechst 33342 for ABCB1 (also known as P-gp and MDR1) and ABCG2 (BCRP1). In this chapter, we will describe the complete procedure for the detection of MDR activity, including: (1) Preparing single-cell suspensions from tumor and normal tissue specimens; (2) An efficient method to perform cell surface marker staining on large numbers of cells; (3) Flow cytometer setup and controls; (4) Simultaneous measurement of Hoechst 33342 and Rhodamine123 transport; and (5) Data acquisition and analysis.
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Bankstahl JP, Hoffmann K, Bethmann K, Löscher W. Glutamate is critically involved in seizure-induced overexpression of P-glycoprotein in the brain. Neuropharmacology 2008; 54:1006-16. [PMID: 18394657 DOI: 10.1016/j.neuropharm.2008.02.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2007] [Revised: 02/05/2008] [Accepted: 02/08/2008] [Indexed: 02/04/2023]
Abstract
About 30% of patients with epilepsy do not respond adequately to drug therapy, making pharmacoresistance a major problem in the treatment of this common brain disorder. Mechanisms of intractability are not well understood, but may include limitation of antiepileptic drug access to the seizure focus by overexpression of the drug efflux transporter P-glycoprotein (Pgp) at the blood-brain barrier. Increased expression of Pgp has been determined both in epileptogenic brain tissue of patients with intractable epilepsy and in rodent models of temporal lobe epilepsy, including the pilocarpine model. The mechanisms underlying the increase of Pgp after seizures are unclear. We have recently suggested that the excitatory neurotransmitter glutamate, which is excessively released by seizures, is involved in the seizure-induced overexpression of Pgp in the brain. This hypothesis was evaluated in the present study in the pilocarpine model in rats. After 90 min of status epilepticus (SE), diazepam was administered, followed by either vehicle or the glutamate receptor antagonist MK-801 (dizocilpine). Following SE in vehicle treated rats, Pgp expression in brain capillary endothelial cells increased about twofold in the hippocampus, which was completely prevented by MK-801. Furthermore, neurodegeneration developing in the hippocampus and parahippocampal regions was reduced by the glutamate antagonist. In contrast, the Pgp inhibitor tariquidar did not affect the SE-induced overexpression of Pgp or neurodegeneration in most regions examined. The data indicate that seizure-induced glutamate release is involved in the regulation of Pgp expression, which can be blocked by MK-801. The finding that MK-801 counteracts both Pgp overexpression and neuronal damage when administered after SE may offer a clinically useful therapeutic option in patients with refractory SE.
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Affiliation(s)
- Jens P Bankstahl
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine, Hannover, Germany
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Shukla S, Wu CP, Ambudkar SV. Development of inhibitors of ATP-binding cassette drug transporters: present status and challenges. Expert Opin Drug Metab Toxicol 2008; 4:205-23. [PMID: 18248313 DOI: 10.1517/17425255.4.2.205] [Citation(s) in RCA: 182] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND Multi-drug resistance (MDR) of cancer cells is an obstacle to effective chemotherapy of cancer. The ATP-binding cassette (ABC) transporters, including P-glycoprotein (ABCB1), MRP1 (ABCC1) and ABCG2, play an important role in the development of this resistance. An attractive approach to overcoming MDR is the inhibition of the pumping action of these transporters. Several inhibitors/modulators of ABC transporters have been developed, but cytotoxic effects and adverse pharmacokinetics have prohibited their use. The ongoing search for such inhibitors/modulators that can be applied in the clinic has led to three generations of compounds. The most recent inhibitors are more potent and less toxic than first-generation compounds, yet some are still prone to adverse effects, poor solubility and unfavorable changes in the pharmacokinetics of the anticancer drugs. OBJECTIVE This review provides an update of the published work on the development of potent modulators to overcome MDR in cancer cells, their present status in clinical studies and suggestions for further improvement to obtain better inhibitors. METHODS This review summarizes recent advances in the development of less toxic modulators, including small molecules and natural products. In addition, a brief overview of other novel approaches that can be used to inhibit ABC drug transporters mediating MDR has also been provided. CONCLUSION The multifactorial nature of MDR indicates that it may be important to develop modulators that can simultaneously inhibit both the function of the drug transporters and key signaling pathways, which are responsible for development of this phenomenon.
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Affiliation(s)
- Suneet Shukla
- National Cancer Institute, Laboratory of Cell Biology, Center for Cancer Research, NIH, Bethesda, MD 20892, USA
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Maier P, Herskind C, Fleckenstein K, Spier I, Laufs S, Zeller WJ, Fruehauf S, Wenz F. MDR1 gene transfer using a lentiviral SIN vector confers radioprotection to human CD34+ hematopoietic progenitor cells. Radiat Res 2008; 169:301-10. [PMID: 18302483 DOI: 10.1667/rr1067.1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Accepted: 10/15/2007] [Indexed: 02/05/2023]
Abstract
Tumor radiotherapy with large-field irradiation results in an increase in apoptosis of the radiosensitive hematopoietic stem cells (CD34(+)). The aim of this study was to demonstrate the radioprotective potential of MDR1 overexpression in human CD34(+) cells using a lentiviral self-inactivating vector. Transduced human undifferentiated CD34(+) cells were irradiated with 0-8 Gy and held in liquid culture under myeloid-specific maturation conditions. After 12 days, MDR1 expression was determined by the rhodamine efflux assay. The proportion of MDR1-positive cells in cells from four human donors increased with increasing radiation dose (up to a 14-fold increase at 8 Gy). Determination of expression of myeloid-specific surface marker proteins revealed that myeloid differentiation was not affected by transduction and MDR1 overexpression. Irradiation after myeloid differentiation also led to an increase of MDR1-positive cells with escalating radiation doses (e.g. 12.5-16% from 0-8 Gy). Most importantly, fractionated irradiation (3 x 2 Gy; 24-h intervals) of MDR1-transduced CD34(+) cells resulted in an increase in MDR1-positive cells (e.g. 3-8% from 0-3 x 2 Gy). Our results clearly support a radioprotective effect of lentiviral MDR1 overexpression in human CD34(+) cells. Thus enhancing repopulation by surviving stem cells may increase the radiation tolerance of the hematopoietic system, which will contribute to widening the therapeutic index in radiotherapy.
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Affiliation(s)
- Patrick Maier
- Department of Radiation Oncology, Mannheim Medical Centre, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
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Hueber A, Esser JM, Kociok N, Welsandt G, Lüke C, Roters S, Esser PJ. Mitomycin C induces multidrug resistance in glaucoma surgery. Graefes Arch Clin Exp Ophthalmol 2007; 246:297-304. [DOI: 10.1007/s00417-007-0695-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2007] [Revised: 09/11/2007] [Accepted: 09/12/2007] [Indexed: 11/27/2022] Open
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Israeli D, Ziaei S, Gjata B, Benchaouir R, Rameau P, Marais T, Fukada SI, Segawa M, Yamamoto H, Gonin P, Danos O, Garcia L. Expression of mdr1 is required for efficient long term regeneration of dystrophic muscle. Exp Cell Res 2007; 313:2438-50. [PMID: 17481607 DOI: 10.1016/j.yexcr.2007.02.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Revised: 01/27/2007] [Accepted: 02/01/2007] [Indexed: 11/30/2022]
Abstract
The mouse mdr1a and mdr1b genes are expressed in skeletal muscle, though their precise role in muscle is unknown. Dystrophic muscle is characterized by repeated cycles of degeneration and regeneration. To explore the role of the mdr1 genes during muscle regeneration, we have created a triple knockout mouse lacking the mdr1a, mdr1b, and the dystrophin genes. The resulting ReX mice developed normally and were fertile. However, as adults, ReX had a higher proportion of degenerating muscle fibers and greater long-term loss of muscle mass than mdx. ReX muscles were also characterized by a reduced proportion of muscle side population (mSP) cells, of myogenic cells, and a reduced capacity for muscle regeneration. We found too that mSP cells derived from dystrophic muscle are more myogenic than those from normal muscle. Thus, in dystrophic muscle, the mdr1 gene plays an important role in the preservation of the mSP and of the myogenic regenerative potential. Moreover, our results suggest a hitherto unappreciated role of mdr1 in precursor cells of regenerating tissue; they therefore provide an important clue to the physiological significance of mdr1 expression in stem cells.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/genetics
- ATP Binding Cassette Transporter, Subfamily B/physiology
- ATP-Binding Cassette Transporters/genetics
- ATP-Binding Cassette Transporters/physiology
- Animals
- Dystrophin/genetics
- Dystrophin/physiology
- Mice
- Mice, Knockout
- Muscle Development/genetics
- Muscle Fibers, Skeletal/pathology
- Muscle, Skeletal/blood supply
- Muscle, Skeletal/pathology
- Muscle, Skeletal/physiology
- Muscular Dystrophy, Animal/genetics
- Muscular Dystrophy, Animal/pathology
- Myoblasts, Skeletal/metabolism
- Myoblasts, Skeletal/physiology
- Neovascularization, Physiologic/genetics
- Regeneration
- Stem Cells/metabolism
- Stem Cells/physiology
- ATP-Binding Cassette Sub-Family B Member 4
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Gómez-Martínez A, García-Morales P, Carrato A, Castro-Galache MD, Soto JL, Carrasco-García E, García-Bautista M, Guaraz P, Ferragut JA, Saceda M. Post-transcriptional Regulation of P-Glycoprotein Expression in Cancer Cell Lines. Mol Cancer Res 2007; 5:641-53. [PMID: 17579122 DOI: 10.1158/1541-7786.mcr-06-0177] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study of inhibitors shows that the histone deacetylase-induced increase in P-glycoprotein (Pgp) mRNA (MDR1 mRNA) does not parallel either an increase in Pgp protein or an increase in Pgp activity in several colon carcinoma cell lines. Furthermore, studying the polysome profile distribution, we show a translational control of Pgp in these cell lines. In addition, we show that the MDR1 mRNA produced in these cell lines is shorter in its 5' end that the MDR1 mRNA produced in the MCF-7/Adr (human breast carcinoma) and K562/Adr (human erythroleukemia) cell lines, both of them expressing Pgp. The different size of the MDR1 mRNA is due to the use of alternative promoters. Our data suggest that the translational blockade of MDR1 mRNA in the colon carcinoma cell lines and in wild-type K562 cells could be overcome by alterations in the 5' end of the MDR1 mRNA in the resistant variant of these cell lines, as in the case of the K562/Adr cell line. This is, to our knowledge, the first report demonstrating that the presence of an additional 5' untranslated fragment in the MDR1 mRNA improves the translational efficiency of this mRNA.
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MESH Headings
- 5' Untranslated Regions
- ATP Binding Cassette Transporter, Subfamily B/biosynthesis
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Cell Line, Tumor
- Drug Resistance, Neoplasm
- Enzyme Inhibitors/pharmacology
- Gene Expression Regulation, Neoplastic
- Histone Deacetylase Inhibitors
- Humans
- K562 Cells
- Models, Genetic
- Nucleic Acid Conformation
- Promoter Regions, Genetic
- RNA Processing, Post-Transcriptional
- RNA, Messenger/metabolism
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Affiliation(s)
- Angeles Gómez-Martínez
- Instituto de Biología Molecular y Celular, Ed. Torregaitan, Universidad Miguel Hernández, 03202 Elche (Alicante), Spain
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Mrozikiewicz PM, Seremak-Mrozikiewicz A, Semczuk A, Landt O, Breborowicz GH, Drews K. The significance of C3435T point mutation of the MDR1 gene in endometrial cancer. Int J Gynecol Cancer 2007; 17:728-31. [PMID: 17300681 DOI: 10.1111/j.1525-1438.2007.00821.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The P-glycoprotein (P-gp) plays an important role in carcinogen distribution and is connected with cell differentiation and apoptotic processes leading to carcinogenesis. Interindividual differences in P-gp activity could modulate susceptibility to cancer development. The MDR1 gene, coding for P-gp, is highly polymorphic and some mutations modulate P-gp activity. Recently, association between the MDR1 C3435T polymorphism and the cancer susceptibility was shown. We have hypothesized that MDR1 polymorphism could influence endometrial cancer susceptibility. We have matched 198 women with endometrial cancer and 198 controls. An additional group of 488 healthy volunteers was investigated. The MDR1 C3435T polymorphism was tested by LightCycler assay. The distribution of MDR1 3435 genotypes was significantly different between cases and controls (P = 0.006). Genotypes containing at least one 3435T allele were statistically significant more frequent in the endometrial cancer group (86.8% vs 75.2%, OR 2.18, P = 0.004). Our observation suggests that MDR1 C3435T polymorphism is correlated with endometrial cancer susceptibility.
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Affiliation(s)
- P M Mrozikiewicz
- Department of Pharmacology and Biotechnology, Research Institute of Medicinal Plants, Poznan, Poland.
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Vega Thurber R, Epel D. Apoptosis in early development of the sea urchin, Strongylocentrotus purpuratus. Dev Biol 2006; 303:336-46. [PMID: 17174294 DOI: 10.1016/j.ydbio.2006.11.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2006] [Revised: 10/23/2006] [Accepted: 11/13/2006] [Indexed: 12/29/2022]
Abstract
Apoptosis provides metazoans remarkable developmental flexibility by (1) eliminating damaged undifferentiated cells early in development and then (2) sculpting, patterning, and restructuring tissues during successive stages thereafter. We show here that apoptotic programmed cell death is infrequent and not obligatory during early embryogenesis of the purple sea urchin, Strongylocentrotus purpuratus. During the first 30 h of urchin development, fewer than 20% of embryos exhibit any cell death. Cell death during the cleavage stages consists of necrotic or pathological cell death, while cell death during the blastula and gastrula stages is random and predominantly caspase-mediated apoptosis. Apoptosis remains infrequent during the late blastula stage followed by a gradual increase in frequency during gastrulation. Even after prolonged exposure during the cleavage period to chemical stress, apoptosis occurs in less than 50% of embryos and always around the pre-hatching stage. Embryonic suppression of apoptosis through caspase inhibition leads to functionally normal larvae that can survive to metamorphosis, but in the presence of inducers of apoptosis, caspase inhibition leads to deformed larvae and reduced survival. Remarkably, however, pharmacological induction of apoptosis, while reducing overall survival, also significantly accelerates development of the survivors such that metamorphosis occurs up to a week before controls.
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Affiliation(s)
- Rebecca Vega Thurber
- Stanford University, Hopkins Marine Station, 120 Oceanview Blvd., Pacific Grove, CA 93950, USA.
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Koyama T, Nakamura T, Komoto C, Sakaeda T, Taniguchi M, Okamura N, Tamura T, Aoyama N, Kamigaki T, Kuroda Y, Kasuga M, Kadoyama K, Okumura K. MDR1 T-129C polymorphism can be predictive of differentiation, and thereby prognosis of colorectal adenocarcinomas in Japanese. Biol Pharm Bull 2006; 29:1449-53. [PMID: 16819187 DOI: 10.1248/bpb.29.1449] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The expression level of MDR1 mRNA was evaluated in colorectal adenocarcinomas and adjacent noncancerous colorectal tissues obtained from 21 Japanese patients. It was lower in the former than in the latter (p=0.012), suggesting its down-regulation as a consequence of malignant transformation of colorectal tissues, possibly with the suppression of differentiation. Relatively lower expression was suggested in moderately-differentiated colorectal adenocarcinomas than well-differentiated ones, but there was no statistical difference (p=0.111). MDR1 mRNA up-regulation was found in a colorectal adenocarcinoma cell line, HCT-15, after treatment with two typical differentiating agents, sodium butyrate and all-trans retinoic acid, suggesting its involvement in the cellular events, resulting in differentiation without malignant transformation. MDR1 T-129C, but not G2677A,T and C3435T, was associated with the lower expression of MDR1 mRNA both in colorectal adenocarcinomas (p=0.040) and adjacent noncancerous colorectal tissues (p=0.023), possibly being an useful invasive marker predicting poorly-differentiated colorectal adenocarcinomas and thereby the poor prognosis of the patients, especially when no extra biopsy samples will be obtained. Further investigations with relatively large number of patients should be undertaken to confirm these preliminary results.
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Affiliation(s)
- Tatsuya Koyama
- Division of Clinical Pharmacokinetics, Department of General Therapeutics, Kobe University Graduate School of Medicine, Japan
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Miller B, Patel VA, Sorokin A. Cyclooxygenase-2 rescues rat mesangial cells from apoptosis induced by adriamycin via upregulation of multidrug resistance protein 1 (P-glycoprotein). J Am Soc Nephrol 2006; 17:977-85. [PMID: 16540558 DOI: 10.1681/asn.2005101076] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Cyclooxygenase-2 (COX-2) is constitutively expressed in restricted subpopulations of kidney cells, where it presumably acts as an antiapoptotic factor. In conditions that are characterized by inflammation, COX-2 expression also has been described in glomerular mesangial cells (GMC), where COX-2 is not expressed constitutively. It was shown previously that adenovirus-mediated gene transfer of COX-2 into rat GMC led to increased expression and activity of multidrug resistance protein 1 (MDR-1), a membrane transporter that functions as an efflux pump for chemotherapeutic drugs, including Adriamycin (ADR). In ADR nephrotoxicity, a pathologic change in glomeruli could be partially explained by ADR-mediated changes in GMC. Here it is demonstrated that ADR (also known as doxorubicin; 1 microg/ml) induced apoptosis in 15.3 +/- 2.2% of GMC, whereas after adenovirus-mediated COX-2 expression, only 6.6 +/- 0.4% of ADR-treated cells underwent apoptosis. This protective effect was nullified by treatment with NS398, specific COX-2 inhibitor. ADR efflux is greater in COX-2-overexpressing cells, when compared with control, which is attributed to the increased MDR-1 expression. Addition of PSC833, the specific MDR-1 inhibitor, completely abolished the protective effect of COX-2 overexpression and increased the level of apoptosis in GMC that were exposed to ADR. These data suggest that COX-2 protects GMC from ADR-mediated apoptosis via transcriptional upregulation of MDR-1 and that induced COX-2 expression would lessen ADR nephrotoxicity.
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Affiliation(s)
- Bradley Miller
- Department of Medicine, Cardiovascular Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA
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Burckart GJ, Hutchinson IV, Zeevi A. Pharmacogenomics and lung transplantation: clinical implications. THE PHARMACOGENOMICS JOURNAL 2006; 6:301-10. [PMID: 16520825 DOI: 10.1038/sj.tpj.6500376] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- G J Burckart
- Department of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
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Abstract
Multidrug resistant transporter MDR1/P-glycoprotein, the gene product of MDR1, is a glycosylated membrane protein of 170 kDa, belonging to the ATP-binding cassette superfamily of membrane transporters. A number of various types of structurally unrelated drugs are substrates for MDR1, and MDR1 and other transporters are recognized as an important class of proteins for regulating pharmacokinetics. The first investigation of the effects of MDR1 genotypes on pharmacotherapy was reported in 2000; a silent single nucleotide polymorphism (SNP), C3435T in exon 26, was found to be associated with the duodenal expression of MDR1, and thereby the plasma concentration of digoxin after oral administration. In the last 5 years, clinical studies have been conducted around the world on the association of MDR1 genotype with MDR1 expression and function in tissues, and with the pharmacokinetics and pharmacodynamics of drugs; however, there are still discrepancies in the results on C3435T. In 1995, a novel concept to predict in vivo oral pharmacokinetic performance from data on in vivo permeability and in vitro solubility has been proposed, and this Biopharmaceutical Classification System strongly suggested that the effects of intestinal MDR1 on the intestinal absorption of substrates is minimal in the case of commercially available oral drugs, and therefore MDR1 genotypes are little associated with the pharmacokinetics after oral administration. This review summarizes the latest reports for the future individualization of pharmacotherapy based on MDR1 genotyping, and attempts to explain discrepancies.
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Affiliation(s)
- Toshiyuki Sakaeda
- Department of Hospital Pharmacy, School of Medicine, Kobe University, Japan.
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