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Kim S, Sharma AK, Vatamaniuk OK. N-Terminal Extension and C-Terminal Domains Are Required for ABCB6/HMT-1 Protein Interactions, Function in Cadmium Detoxification, and Localization to the Endosomal-Recycling System in Caenorhabditis elegans. Front Physiol 2018; 9:885. [PMID: 30104978 PMCID: PMC6077975 DOI: 10.3389/fphys.2018.00885] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/19/2018] [Indexed: 01/30/2023] Open
Abstract
The chronic exposure of humans to toxic metals such as cadmium from food and air causes dysfunction of vital organs, neurodegenerative conditions, and cancer. In this regard, members of the ABCB sub-family of the ATP-binding cassette (ABC) transporter superfamily, ABCB6/HMT-1, are acutely required for the detoxification of heavy metals and are present in genomes of many organisms including the nematode worm, Caenorhabditis elegans and humans. We showed previously that C. elegans ABCB6/HMT-1 detoxifies cadmium, copper, and arsenic, and is expressed in liver-like cells, the coelomocytes, head neurons and intestinal cells, which are the cell types that are affected by heavy metal poisoning in humans. The subcellular localization of ABCB6/HMT-1 proteins is unclear. ABCB6/HMT-1 proteins have a distinguishing topology: in addition to one transmembrane domain and one nucleotide-binding domain, they possess a hydrophobic N-terminal extension (NTE) domain encompassing five to six transmembrane spans. The role of the NTE domain in the function of ABCB6/HMT-1 in the native organism remains to be investigated. We used a versatile, multicellular model system, C. elegans, to establish the subcellular localization of ABCB6/HMT-1 and refine its structure-function studies in the native organism. We show that ABCB6/HMT-1 localizes mainly to the apical recycling endosomes and, in part, to early and late endosomes of intestinal cells. We also show that ABCB6/HMT-1 lacking the NTE domain is mistargeted to the plasma membrane and is unable to confer cadmium resistance. Although the NTE domain is essential for ABCB6/HMT-1 interaction with itself, the absence of NTE does not fully prevent this interaction. As a result, ABCB6/HMT-1 lacking the NTE domain, and expressed in wild-type worms or co-expressed with the full-length polypeptide, inactivates and mistargets the full-length ABCB6/HMT-1. We also show that the 43 amino acid residue stretch at the COOH-terminus is required for the ABCB6/HMT-1 interaction with itself and cadmium detoxification function. These results suggest that both NTE and COOH-terminus must be present to allow the protein to interact with itself and confer cadmium resistance. Considering that ABCB6/HMT-1 proteins are highly conserved, this study advances our understanding of how these proteins function in cadmium resistance in different species. Furthermore, these studies uncover the role of the endosomal-recycling system in cadmium detoxification.
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Affiliation(s)
- Sungjin Kim
- Section of Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Anuj K. Sharma
- Section of Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Olena K. Vatamaniuk
- Section of Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
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52
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da Silva SM, Batista-Nascimento L, Gaspar-Cordeiro A, Vernis L, Pimentel C, Rodrigues-Pousada C. Transcriptional regulation of FeS biogenesis genes: A possible shield against arsenate toxicity activated by Yap1. Biochim Biophys Acta Gen Subj 2018; 1862:2152-2161. [PMID: 30025855 DOI: 10.1016/j.bbagen.2018.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/22/2018] [Accepted: 07/11/2018] [Indexed: 11/26/2022]
Abstract
In the eukaryotic model yeast Saccharomyces cerevisiae, arsenic (As) detoxification is regulated by two transcriptional factors, Yap8 and Yap1. Yap8 specifically controls As extrusion from the cell, whether Yap1 avoids arsenic-induced oxidative damages. Accordingly, cells lacking both Yap1 and Yap8 are more sensitive to arsenate than cells lacking each regulator individually. Strikingly enough, the same sensitivity pattern was observed under anoxia, suggesting that Yap1 role in As detoxification might not be restricted to the regulation of the oxidative stress response. This finding prompted us to study the transcriptomic profile of wild-type and yap1 mutant cells exposed to arsenate. Interestingly, we found that, under such conditions, several genes involved in the biogenesis of FeS proteins were upregulated in a Yap1-dependent way. In line with this observation, arsenate treatment decreases the activity of the mitochondrial aconitase, Aco1, an FeS cluster-containing enzyme, this effect being even more pronounced in the yap1 mutant. Reinforcing the relevance of FeS cluster biogenesis in arsenate detoxification, the overexpression of several ISC and CIA machinery genes alleviates the deleterious effect of arsenate caused by the absence of Yap1 and Yap8. Altogether our data suggest that the upregulation of FeS biogenesis genes regulated by Yap1 might work as a cellular shield against arsenate toxicity.
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Affiliation(s)
- Sofia M da Silva
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Liliana Batista-Nascimento
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal; Institute of Molecular Biology, 55128 Mainz, Germany
| | - Ana Gaspar-Cordeiro
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Laurence Vernis
- CNRS UMR 3348, Centre Universitaire, 91405 Orsay, France; Institut Curie, PSL Research University, UMR 3348, 91405 Orsay, France; Université Paris Sud, Université Paris-Saclay, CNRS UMR3348, 91405 Orsay, France
| | - Catarina Pimentel
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
| | - Claudina Rodrigues-Pousada
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal.
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53
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Zuo YY, Huang JL, Wang J, Feng Y, Han TT, Wu YD, Yang YH. Knockout of a P-glycoprotein gene increases susceptibility to abamectin and emamectin benzoate in Spodoptera exigua. INSECT MOLECULAR BIOLOGY 2018; 27:36-45. [PMID: 28753233 DOI: 10.1111/imb.12338] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
P-glycoprotein [P-gp or the ATP-binding cassette transporter B1 (ABCB1)] is an important participant in multidrug resistance of cancer cells, yet the precise function of this arthropod transporter is unknown. The aim of this study was to determine the importance of P-gp for susceptibility to insecticides in the beet armyworm (Spodoptera exigua) using clustered regularly interspaced short palindromic repeats/CRISPR-associated 9 (CRISPR/Cas9) gene-editing technology. We cloned an open reading frame (ORF) encoding the S. exigua P-gp protein (SeP-gp) predicted to display structural characteristics common to P-gp and other insect ABCB1 transporters. A knockout line with a frame shift deletion of four nucleotides in the SeP-gp ORF was established using the CRISPR/Cas9 gene-editing system to test its potential role in determining susceptibility to chemical insecticides or insecticidal proteins from the bacterium Bacillus thuringiensis (Bt). Results from comparative bioassays demonstrate that knockout of SeP-gp significantly increases susceptibility of S. exigua by around threefold to abamectin and emamectin benzoate (EB), but not to spinosad, chlorfenapyr, beta-cypermethrin, carbosulfan indoxacarb, chlorpyrifos, phoxim, diafenthiuron, chlorfluazuron, chlorantraniliprole or two Bt toxins (Cry1Ca and Cry1Fa). Our data support an important role for SeP-gp in susceptibility of S. exigua to abamectin and EB and imply that overexpression of SeP-gp may contribute to abamectin and EB resistance in S. exigua.
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Affiliation(s)
- Y-Y Zuo
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - J-L Huang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - J Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Y Feng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - T-T Han
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Y-D Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Y-H Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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54
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Hsu HH, Chen MC, Baskaran R, Lin YM, Day CH, Lin YJ, Tu CC, Vijaya Padma V, Kuo WW, Huang CY. Oxaliplatin resistance in colorectal cancer cells is mediated via activation of ABCG2 to alleviate ER stress induced apoptosis. J Cell Physiol 2018; 233:5458-5467. [PMID: 29247488 DOI: 10.1002/jcp.26406] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 12/12/2017] [Indexed: 12/12/2022]
Abstract
Oxaliplatin (OXA), is a third generation platinum drug used as first-line chemotherapy in colorectal cancer (CRC). Cancer cells acquires resistance to anti-cancer drug and develops resistance. ATP-binding cassette (ABC) drug transporter ABCG2, one of multidrug resistance (MDR) protein which can effectively discharge a wide spectrum of chemotherapeutic agents out of cancer cells and subsequently reduce the intracellular concentration of these drugs. Role of ABCG2 and plausible molecular signaling pathways involved in Oxaliplatin-Resistant (OXA-R) colon cancer cells was evaluated in the present study. OXA resistant LoVo cells was developed by exposing the colon cells to OXA in a dose-dependent manner. Development of multi drug resistance in OXA-R cells was confirmed by exposing the resistance cells to oxaliplatin, 5-FU, and doxorubicin. OXA treatment resulted in G2 phase arrest in parental LoVo cells, which was overcome by OXA-R LoVo cells. mRNA and protein expression of ABCG2 and phosphorylation of NF-κB was significantly higher in OXA-R than parental cells. Levels of ER stress markers were downregulated in OXA-R than parental cells. OXA-R LoVo cells exposed to NF-κB inhibitor QNZ effectively reduced the ABCG2 and p-NF-κB expression and increased ER stress marker expression. On other hand, invasion and migratory effect of OXA-R cells were found to be decreased, when compared to parental cells. Metastasis marker proteins also downregulated in OXA-R cells. ABCG2 inhibitor verapamil, downregulate ABCG2, induce ER stress markers and induces apoptosis. In vivo studies in nude mice also confirms the same.
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Affiliation(s)
- Hsi-Hsien Hsu
- Division of Colorectal Surgery, Mackay Memorial Hospital, Taipei, Taiwan.,Mackay Medicine, Nursing and Management College, Taipei, Taiwan
| | - Ming-Cheng Chen
- Division of Colorectal Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Rathinasamy Baskaran
- National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - Yueh-Min Lin
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan.,Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Cecilia H Day
- Department of Nursing, Mei Ho University, Pingtung, Taiwan
| | - Yi-Jiun Lin
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Chuan-Chou Tu
- Division of Chest Medicine, Department of Internal Medicine, Armed Force Taichung General Hospital, Taichung, Taiwan
| | | | - Wei-Wen Kuo
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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55
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Navarro-Quiles C, Mateo-Bonmatí E, Micol JL. ABCE Proteins: From Molecules to Development. FRONTIERS IN PLANT SCIENCE 2018; 9:1125. [PMID: 30127795 PMCID: PMC6088178 DOI: 10.3389/fpls.2018.01125] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/12/2018] [Indexed: 05/12/2023]
Abstract
Most members of the large family of ATP-Binding Cassette (ABC) proteins function as membrane transporters. However, the most evolutionarily conserved group, the ABCE protein subfamily, comprises soluble proteins that were initially denoted RNase L inhibitor (RLI) proteins. ABCE proteins are present in all eukaryotes and archaea and are encoded by a single gene in most genomes, or by two genes in a few cases. Functional analysis of ABCE genes, primarily in Saccharomyces cerevisiae, has shown that ABCE proteins have essential functions as part of the translational apparatus. In this review, we summarize the current understanding of ABCE protein function in ribosome biogenesis and recycling, with a particular focus on their known and proposed developmental roles in different species. The ABCE proteins might represent another class of factors contributing to the role of the ribosome in gene expression regulation.
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56
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Liu Z, Wang Z, Huang M, Yan L, Ma Z, Yin Y. The FgSsb-FgZuo-FgSsz complex regulates multiple stress responses and mycotoxin production via folding the soluble SNARE Vam7 and β2-tubulin in Fusarium graminearum. Environ Microbiol 2017; 19:5040-5059. [PMID: 29076607 DOI: 10.1111/1462-2920.13968] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 10/16/2017] [Accepted: 10/19/2017] [Indexed: 11/28/2022]
Abstract
Hsp70 proteins play important roles in protein folding in the budding yeast, but their functions in pathogenic fungi are largely unknown. Here, we found that Fusarium graminearum Hsp70 proteins FgSsb, FgSsz and their cochaperone FgZuo formed a complex. This complex was required for microtubule morphology, vacuole fusion and endocytosis. More importantly, the β2-tubulin FgTub2 and SNARE protein FgVam7 were identified as targeting proteins of this complex. We further found that the complex FgSsb-FgZuo-FgSsz controlled sensitivity of F. graminearum to the antimicrotubule drug carbendazim and cold stress via regulating the folding of FgTub2. Moreover, this complex assisted the folding of FgVam7, subsequently modulated vacuole fusion and responses to heavy metal, osmotic and oxidative stresses. In addition, the deletion of this complex led to dramatically decreased deoxynivalenol biosynthesis. This study uncovers a novel regulating mechanism of Hsp70 in multiple stress responses in a filamentous fungus.
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Affiliation(s)
- Zunyong Liu
- Institute of Biotechnology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Zhihui Wang
- Institute of Biotechnology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Mengmeng Huang
- Institute of Biotechnology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Leiyan Yan
- Ningbo Academy of Agricultural Sciences, Ningbo, 315040, China
| | - Zhonghua Ma
- Institute of Biotechnology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.,State Key Laboratory of Rice Biology, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Yanni Yin
- Institute of Biotechnology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
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57
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Wong JH, Alfatah M, Sin MF, Sim HM, Verma CS, Lane DP, Arumugam P. A yeast two-hybrid system for the screening and characterization of small-molecule inhibitors of protein-protein interactions identifies a novel putative Mdm2-binding site in p53. BMC Biol 2017; 15:108. [PMID: 29121928 PMCID: PMC5680816 DOI: 10.1186/s12915-017-0446-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 10/19/2017] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Protein-protein interactions (PPIs) are fundamental to the growth and survival of cells and serve as excellent targets to develop inhibitors of biological processes such as host-pathogen interactions and cancer cell proliferation. However, isolation of PPI inhibitors is extremely challenging. While several in vitro assays to screen for PPI inhibitors are available, they are often expensive, cumbersome, and require large amounts of purified protein. In contrast, limited in vivo assays are available to screen for small-molecule inhibitors of PPI. METHODS We have engineered a yeast strain that is suitable for screening of small-molecule inhibitors of protein-protein interaction using the Yeast 2-hybrid Assay. We have optimised and validated the assay using inhibitors of the p53-Mdm2 interaction and identified a hitherto unreported putative Mdm2-binding domain in p53. RESULTS We report a significantly improved and thoroughly validated yeast two-hybrid (Y2H) assay that can be used in a high throughput manner to screen for small-molecule PPI inhibitors. Using the p53-Mdm2 interaction to optimize the assay, we show that the p53-Mdm2 inhibitor nutlin-3 is a substrate for the yeast ATP-binding cassette (ABC) transporter Pdr5. By deleting nine ABC transporter-related genes, we generated a ABC9Δ yeast strain that is highly permeable to small molecules. In the ABC9Δ strain, p53-Mdm2 interaction inhibitors, like AMG232 and MI-773, completely inhibited the p53-Mdm2 interaction at nanomolar concentrations in the Y2H assay. In addition, we identified a conserved segment in the core DNA-binding domain of p53 that facilitates stable interaction with Mdm2 in yeast cells and in vitro. CONCLUSION The Y2H assay can be utilized for high-throughput screening of small-molecule inhibitors of PPIs and to identify domains that stabilize PPIs.
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Affiliation(s)
- Jin Huei Wong
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore, 138671, Singapore
| | - Mohammad Alfatah
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore, 138671, Singapore
| | - Mei Fang Sin
- Department of Pharmacy, National University of Singapore, National University of Singapore 18 Science Drive 4, Singapore, 117543, Singapore
| | - Hong May Sim
- Department of Pharmacy, National University of Singapore, National University of Singapore 18 Science Drive 4, Singapore, 117543, Singapore
| | - Chandra S Verma
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore, 138671, Singapore.,Department of Biological Sciences, National University of Singapore, 14 Science Drive, Singapore, 117543, Singapore.,Nanyang Technological University, School of Biological Sciences, 50 Nanyang Drive, Singapore, 637551, Singapore
| | - David P Lane
- The p53 Laboratory, 8A Biomedical Grove, Singapore, 138648, Singapore
| | - Prakash Arumugam
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore, 138671, Singapore.
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58
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Geisler M, Aryal B, di Donato M, Hao P. A Critical View on ABC Transporters and Their Interacting Partners in Auxin Transport. PLANT & CELL PHYSIOLOGY 2017; 58:1601-1614. [PMID: 29016918 DOI: 10.1093/pcp/pcx104] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/18/2017] [Indexed: 05/24/2023]
Abstract
Different subclasses of ATP-binding cassette (ABC) transporters have been implicated in the transport of native variants of the phytohormone auxin. Here, the putative, individual roles of key members belonging to the ABCB, ABCD and ABCG families, respectively, are highlighted and the knowledge of their assumed expression and transport routes is reviewed and compared with their mutant phenotypes. Protein-protein interactions between ABC transporters and regulatory components during auxin transport are summarized and their importance is critically discussed. There is a focus on the functional interaction between members of the ABCB family and the FKBP42, TWISTED DWARF1, acting as a chaperone during plasma membrane trafficking of ABCBs. Further, the mode and relevance of functional ABCB-PIN interactions is diagnostically re-evaluated. A new nomenclature describing precisely the most likely ABCB-PIN interaction scenarios is suggested. Finally, available tools for the detection and prediction of ABC transporter interactomes are summarized and the potential of future ABC transporter interactome maps is highlighted.
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Affiliation(s)
- Markus Geisler
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Bibek Aryal
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Martin di Donato
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Pengchao Hao
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
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59
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Baral B. Evolutionary Trajectories of Entomopathogenic Fungi ABC Transporters. ADVANCES IN GENETICS 2017; 98:117-154. [PMID: 28942792 DOI: 10.1016/bs.adgen.2017.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The ABC protein superfamily-also called traffic ATPases-are energy-dependent ubiquitous proteins, representing one of the crucial and the largest family in the fungal genomes. The ATP-binding cassette endows a characteristic 200-250 amino acids and is omnipresent in all organisms ranging from prokaryotes to eukaryotes. Unlike in bacteria with nutrient import functions, ABC transporters in fungal entomopathogens serve as effective efflux pumps that are largely involved in the shuttle of metabolites across the biological membranes. Thus, the search for ABC proteins may prove of immense importance in elucidating the functional and molecular mechanism at the host-pathogen (insect-fungus) interface. Their sequence homology, domain topology, and functional traits led to the actual identification of nine different families in fungal entomopathogens. Evolutionary relationships within the ABC superfamily are discussed, concentrating on computational approaches for comparative identification of ABC transporters in insect-pathogenic fungi (entomopathogens) with those of animals, plants, and their bacterial orthologs. Ancestors of some fungal candidates have duplicated extensively in some phyla, while others were lost in one lineage or the other, and predictions for the cause of their duplications and/or loss in some phyla are made. ABC transporters of fungal insect-pathogens serve both defensive and offensive functions effective against land-dwelling and ground foraging voracious insects. This study may help to unravel the molecular cascades of ABC proteins to illuminate the means through which insects cope with fungal infection and fungal-related diseases.
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60
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Wagner M, Doehl K, Schmitt L. Transmitting the energy: interdomain cross-talk in Pdr5. Biol Chem 2017; 398:145-154. [PMID: 27543784 DOI: 10.1515/hsz-2016-0247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 08/16/2016] [Indexed: 01/24/2023]
Abstract
ABC (ATP-binding cassette) transporters are ubiquitous integral membrane proteins catalyzing the active export or import of structurally and functionally unrelated compounds. In humans, these proteins are clinically and economically important, as their dysfunction is responsible for a number of diseases. In the case of multidrug resistance (MDR) ABC exporters, they particularly confer resistance to a broad spectrum of toxic compounds, placing them in the focus of clinical research. However, ABC-mediated drug resistance is not only restricted to humans. In yeast for example, MDR is called pleiotropic drug resistance (PDR). Important and well-studied members of the PDR subfamily of ABC transporters are Pdr5 from Saccharomyces cerevisiae and its homolog Cdr1 from Candida albicans. Mutational studies of these two transporters provided many insights into the complexity and conceivable mechanism of the interdomain cross-talk that transmits the energy gained from ATP hydrolysis to the substrate translocation process across the membrane. In this review, we summarize and discuss our current knowledge of the interdomain cross-talk as well as new results obtained for asymmetric ABC transporters and derive possible structural and functional implications for Pdr5.
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61
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Mezzetti F, Fay JC, Giudici P, De Vero L. Genetic variation and expression changes associated with molybdate resistance from a glutathione producing wine strain of Saccharomyces cerevisiae. PLoS One 2017; 12:e0180814. [PMID: 28683117 PMCID: PMC5500363 DOI: 10.1371/journal.pone.0180814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 06/21/2017] [Indexed: 12/30/2022] Open
Abstract
Glutathione (GSH) production during wine fermentation is a desirable trait as it can limit must and wine oxidation and protect various aromatic compounds. UMCC 2581 is a Saccharomyces cerevisiae wine strain with enhanced GSH content at the end of wine fermentation. This strain was previously derived by selection for molybdate resistance following a sexual cycle of UMCC 855 using an evolution-based strategy. In this study, we examined genetic and gene expression changes associated with the derivation of UMCC 2581. For genetic analysis we sporulated the diploid UMCC 855 parental strain and found four phenotype classes of segregants related to molybdate resistance, demonstrating the presence of segregating variation from the parental strain. Using bulk segregant analysis we mapped molybdate traits to two loci. By sequencing both the parental and evolved strain genomes we identified candidate mutations within the two regions as well as an extra copy of chromosome 1 in UMCC 2581. Combining the mapped loci with gene expression profiles of the evolved and parental strains we identified a number of candidate genes with genetic and/or gene expression changes that could underlie molybdate resistance and increased GSH levels. Our results provide insight into the genetic basis of GSH production relevant to winemaking and highlight the value of enhancing wine strains using existing variation present in wine strains.
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Affiliation(s)
- Francesco Mezzetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Justin C. Fay
- Department of Genetics and Center for Genome Sciences and Systems Biology, Washington University, St. Louis, Missouri, United States of America
| | - Paolo Giudici
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Luciana De Vero
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
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62
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Golubev A, Hanson AD, Gladyshev VN. Non-enzymatic molecular damage as a prototypic driver of aging. J Biol Chem 2017; 292:6029-6038. [PMID: 28264930 PMCID: PMC5391736 DOI: 10.1074/jbc.r116.751164] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The chemical potentialities of metabolites far exceed metabolic requirements. The required potentialities are realized mostly through enzymatic catalysis. The rest are realized spontaneously through organic reactions that (i) occur wherever appropriate reactants come together, (ii) are so typical that many have proper names (e.g. Michael addition, Amadori rearrangement, and Pictet-Spengler reaction), and (iii) often have damaging consequences. There are many more causes of non-enzymatic damage to metabolites than reactive oxygen species and free radical processes (the "usual suspects"). Endogenous damage accumulation in non-renewable macromolecules and spontaneously polymerized material is sufficient to account for aging and differentiates aging from wear-and-tear of inanimate objects by deriving it from metabolism, the essential attribute of life.
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Affiliation(s)
- Alexey Golubev
- From the Department of Biochemistry, Saint-Petersburg State University, Saint Petersburg 199034, Russia,
| | - Andrew D Hanson
- the Horticultural Sciences Department, University of Florida, Gainesville, Florida 32611, and
| | - Vadim N Gladyshev
- the Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
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Diaz-Rodriguez V, Distefano MD. a-Factor: a chemical biology tool for the study of protein prenylation. CURRENT TOPICS IN PEPTIDE & PROTEIN RESEARCH 2017; 18:133-151. [PMID: 29706727 PMCID: PMC5915288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The mating pheromone a-factor is a lipidated dodecapeptide found in the budding yeast S. cerevisiae. The biosynthesis of this peptide encompasses the same three-step processing pathway (farnesylation of C-terminal cysteine, C-terminal proteolysis and C-terminal methyl esterification) as Ras proteins, mutated forms of which have been found in ~30% of human cancers. For the mating of two haploid yeast cells into a diploid cell to happen, the a-factor pheromone travels to the cell surface of the opposite mating cell, where it binds and activates a G-protein coupled receptor. This lipidated-peptide/protein interaction has caught the attention of researchers studying protein prenylation, and studies have shown that this peptide can be used as a model system to understand the role of prenyl groups in protein-protein interactions. Here, we review the different methods used for the synthesis of a-factor and a-factor analogs containing C-terminal cysteine esters and the assays developed for detecting pheromone bioactivity and quantitation of pheromone efficiency. Also, we review crucial peptide modifications that have been used to investigate relationships between the structure and activity of this lipopeptide with its receptor Ste3p. Finally, we aim to discuss recent and future applications of a-factor as a chemical biology tool to study protein prenylation. These include the use of photo crosslinking reactions to map peptide/receptor interactions, the addition of fluorophore tags to visualize the peptide binding, and the use of bio-orthogonal reactions for protein labeling and protein purification.
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Affiliation(s)
- Veronica Diaz-Rodriguez
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Mark D Distefano
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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Wang M, Deng WW, Zhang ZZ, Yu O. Engineering an ABC Transporter for Enhancing Resistance to Caffeine in Saccharomyces cerevisiae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7973-7978. [PMID: 27696877 DOI: 10.1021/acs.jafc.6b03980] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In addressing caffeine toxicity to the producing cells, engineering a transporter that can move caffeine from cytoplasm across the cell membrane to the extracellular space, thus enhancing caffeine resistance and potentially increasing the yield in yeast, is important. An ABC-transporter bfr1 from Schizosaccharomyces pombe was cloned and transformed into S. cerevisiae, resulting in enhancing caffeine resistance. Afterward, a library of randomly mutagenized bfr1 mutants through error-prone PCR was generated. One mutant was identified with drastically increased caffeine resistance (15 mg/mL). Sequencing and structural analysis illustrated that many of the mutations occurred at the cytosolic domain. Site-directed mutagenesis of these mutations confirmed at least one amino acid that conferred enhancing caffeine resistance in the mutated bfr1. These data demonstrated engineering ABC-transporters can be an efficient way to reduce product toxicity in heterologous systems.
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Affiliation(s)
- Min Wang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 Changjiang West Road, Hefei, Anhui 230036, China
- Wuxi NewWay Biotechnology , 100 Konggang Road, Wuxi, Jiangsu 214145, China
| | - Wei-Wei Deng
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 Changjiang West Road, Hefei, Anhui 230036, China
| | - Zheng-Zhu Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , 130 Changjiang West Road, Hefei, Anhui 230036, China
| | - Oliver Yu
- Conagen Inc., 15 DeAngelo Drive, Bedford, Massachusetts 01730, United States
- Wuxi NewWay Biotechnology , 100 Konggang Road, Wuxi, Jiangsu 214145, China
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65
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Verma PK, Verma S, Meher AK, Pande V, Mallick S, Bansiwal AK, Tripathi RD, Dhankher OP, Chakrabarty D. Overexpression of rice glutaredoxins (OsGrxs) significantly reduces arsenite accumulation by maintaining glutathione pool and modulating aquaporins in yeast. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 106:208-17. [PMID: 27174139 DOI: 10.1016/j.plaphy.2016.04.052] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 05/05/2023]
Abstract
Arsenic (As) is an acute poison and class I carcinogen, can cause a serious health risk. Staple crops like rice are the primary source of As contamination in human food. Rice grown on As contaminated areas accumulates higher As in their edible parts. Based on our previous transcriptome data, two rice glutaredoxins (OsGrx_C7 and OsGrx_C2.1) were identified that showed up-regulated expression during As stress. Here, we report OsGrx_C7 and OsGrx_C2.1 from rice involved in the regulation of intracellular arsenite (AsIII). To elucidate the mechanism of OsGrx mediated As tolerance, both OsGrxs were cloned and expressed in Escherichia coli (Δars) and Saccharomyces cerevisiae mutant strains (Δycf1, Δacr3). The expression of OsGrxs increased As tolerance in E. coli (Δars) mutant strain (up to 4 mM AsV and up to 0.6 mM AsIII). During AsIII exposure, S. cerevisiae (Δacr3) harboring OsGrx_C7 and OsGrx_C2.1 have lower intracellular AsIII accumulation (up to 30.43% and 24.90%, respectively), compared to vector control. Arsenic accumulation in As-sensitive S. cerevisiae mutant (Δycf1) also reduced significantly on exposure to inorganic As. The expression of OsGrxs in yeast maintained intracellular GSH pool and increased extracellular GSH concentration. Purified OsGrxs displays in vitro GSH-disulfide oxidoreductase, glutathione reductase and arsenate reductase activities. Also, both OsGrxs are involved in AsIII extrusion by altering the Fps1 transcripts in yeast and protect the cell by maintaining cellular GSH pool. Thus, our results strongly suggest that OsGrxs play a crucial role in the maintenance of the intracellular GSH pool and redox status of the cell during both AsV and AsIII stress and might be involved in regulating intracellular AsIII levels by modulation of aquaporin expression and functions.
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Affiliation(s)
- Pankaj Kumar Verma
- Genetics and Molecular Biology Division, CSIR-National Botanical Research Institute, India; Department of Biotechnology, Kumaun University, India
| | - Shikha Verma
- Genetics and Molecular Biology Division, CSIR-National Botanical Research Institute, India; Department of Biotechnology, Kumaun University, India
| | - Alok Kumar Meher
- Environmental Material Division, CSIR-National Environmental Engineering Research Institute, India
| | - Veena Pande
- Department of Biotechnology, Kumaun University, India
| | - Shekhar Mallick
- Environmental Biotechnology Division, CSIR-National Botanical Research Institute, India
| | - Amit Kumar Bansiwal
- Environmental Material Division, CSIR-National Environmental Engineering Research Institute, India
| | - Rudra Deo Tripathi
- Environmental Biotechnology Division, CSIR-National Botanical Research Institute, India
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, USA
| | - Debasis Chakrabarty
- Genetics and Molecular Biology Division, CSIR-National Botanical Research Institute, India.
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66
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Learning from each other: ABC transporter regulation by protein phosphorylation in plant and mammalian systems. Biochem Soc Trans 2016; 43:966-74. [PMID: 26517911 DOI: 10.1042/bst20150128] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The ABC (ATP-binding cassette) transporter family in higher plants is highly expanded compared with those of mammalians. Moreover, some members of the plant ABC subfamily B (ABCB) display very high substrate specificity compared with their mammalian counterparts that are often associated with multi-drug resistance phenomena. In this review, we highlight prominent functions of plant and mammalian ABC transporters and summarize our knowledge on their post-transcriptional regulation with a focus on protein phosphorylation. A deeper comparison of regulatory events of human cystic fibrosis transmembrane conductance regulator (CFTR) and ABCB1 from the model plant Arabidopsis reveals a surprisingly high degree of similarity. Both physically interact with orthologues of the FK506-binding proteins that chaperon both transporters to the plasma membrane in an action that seems to involve heat shock protein (Hsp)90. Further, both transporters are phosphorylated at regulatory domains that connect both nt-binding folds. Taken together, it appears that ABC transporters exhibit an evolutionary conserved but complex regulation by protein phosphorylation, which apparently is, at least in some cases, tightly connected with protein-protein interactions (PPI).
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67
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OuYang Q, Tao N, Jing G. Transcriptional profiling analysis of Penicillium digitatum, the causal agent of citrus green mold, unravels an inhibited ergosterol biosynthesis pathway in response to citral. BMC Genomics 2016; 17:599. [PMID: 27514516 PMCID: PMC4982135 DOI: 10.1186/s12864-016-2943-4] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/18/2016] [Indexed: 11/17/2022] Open
Abstract
Background Green mold caused by Penicillium digitatum is the most damaging postharvest diseases of citrus fruit. Previously, we have observed that citral dose-dependently inhibited the mycelial growth of P. digitatum, with the minimum inhibitory concentration (MIC) of 1.78 mg/mL, but the underlying molecular mechanism is barely understood. Results In this study, the transcriptional profiling of the control and 1/2MIC-citral treated P. digitatum mycelia after 30 min of exposure were analyzed by RNA-Seq. A total of 6355 genes, including 2322 up-regulated and 4033 down-regulated genes, were found to be responsive to citral. These genes were mapped to 155 KEGG pathways, mainly concerning mRNA surveillance, RNA polymerase, RNA transport, aminoacyl-tRNA biosynthesis, ABC transporter, glycolysis/gluconeogenesis, citrate cycle, oxidative phosphorylation, sulfur metabolism, nitrogen metabolism, inositol phosphate metabolism, fatty acid biosynthesis, unsaturated fatty acids biosynthesis, fatty acid metabolism, and steroid biosynthesis. Particularly, citral exposure affected the expression levels of five ergosterol biosynthetic genes (e.g. ERG7, ERG11, ERG6, ERG3 and ERG5), which corresponds well with the GC-MS results, the reduction in ergosterol content, and accumulation of massive lanosterol. In addition, ERG11, the gene responsible for lanosterol 14α-demethylase, was observed to be the key down-regulated gene in response to citral. Conclusion Our present finding suggests that citral could exhibit its antifungal activity against P. digitatum by the down-regulation of ergosterol biosynthesis. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2943-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qiuli OuYang
- School of Chemical Engineering, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Nengguo Tao
- School of Chemical Engineering, Xiangtan University, Xiangtan, 411105, People's Republic of China.
| | - Guoxing Jing
- School of Chemical Engineering, Xiangtan University, Xiangtan, 411105, People's Republic of China
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The fungal resistome: a risk and an opportunity for the development of novel antifungal therapies. Future Med Chem 2016; 8:1503-20. [PMID: 27485839 DOI: 10.4155/fmc-2016-0051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The risks for toxicity of novel antifungal compounds, together with the emergence of resistance, makes the use of inhibitors of resistance, in combination with antifungal compounds, a suitable strategy for developing novel antifungal formulations. Among them, inhibitors of efflux pumps are suitable candidates. Increasing drug influx or interfering with the stress response may also improve the efficacy of antifungals. Therapies as induction of fungal apoptosis or immunostimulation are also good strategies for reducing the risks for resistance and to improve antifungals' efficacy. Understanding the effect of the acquisition of resistance on the fungal physiology and determining the collateral sensitivity networks are useful for the development of novel strategies based on combination of antifungals for improving the efficacy of the therapy.
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69
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Yeast ABC transporters in lipid trafficking. Fungal Genet Biol 2016; 93:25-34. [DOI: 10.1016/j.fgb.2016.05.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 05/28/2016] [Accepted: 05/31/2016] [Indexed: 12/31/2022]
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70
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Tsao S, Weber S, Cameron C, Nehme D, Ahmadzadeh E, Raymond M. Positive regulation of the Candida albicans multidrug efflux pump Cdr1p function by phosphorylation of its N-terminal extension. J Antimicrob Chemother 2016; 71:3125-3134. [PMID: 27402010 DOI: 10.1093/jac/dkw252] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/10/2016] [Accepted: 05/24/2016] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVES Overexpression of ATP-binding cassette (ABC) transporters is a frequent cause of multidrug resistance in cancer cells and pathogenic microorganisms. One example is the Cdr1p transporter from the human fungal pathogen Candida albicans that belongs to the pleiotropic drug resistance (PDR) subfamily of ABC transporters found in fungi and plants. Cdr1p is overexpressed in several azole-resistant clinical isolates, causing azole efflux and treatment failure. Cdr1p appears as a doublet band in western blot analyses, suggesting that the protein is post-translationally modified. We investigated whether Cdr1p is phosphorylated and the function of this modification. METHODS Phosphorylated residues were identified by MS. Their function was investigated by site-directed mutagenesis and expression of the mutants in a C. albicans endogenous system that exploits a hyperactive allele of the Tac1p transcription factor to drive high levels of Cdr1p expression. Fluconazole resistance was measured by microtitre plate and spot assays and transport activity by Nile red accumulation. RESULTS We identified a cluster of seven phosphorylated amino acids in the N-terminal extension (NTE) of Cdr1p. Mutating all seven sites to alanine dramatically diminished the ability of Cdr1p to confer fluconazole resistance and transport Nile red, without affecting Cdr1p localization. Conversely, a Cdr1p mutant in which the seven amino acids were replaced by glutamate was able to confer high levels of fluconazole resistance and to export Nile red. CONCLUSIONS Our results demonstrate that the NTE of Cdr1p is phosphorylated and that NTE phosphorylation plays a major role in regulating Cdr1p and possibly other PDR transporter function.
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Affiliation(s)
- Sarah Tsao
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Sandra Weber
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Christine Cameron
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Dominic Nehme
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Elaheh Ahmadzadeh
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Martine Raymond
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC H3T 1J4, Canada .,Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, QC H3C 3J7, Canada
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71
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Ikushiro S, Nishikawa M, Masuyama Y, Shouji T, Fujii M, Hamada M, Nakajima N, Finel M, Yasuda K, Kamakura M, Sakaki T. Biosynthesis of Drug Glucuronide Metabolites in the Budding Yeast Saccharomyces cerevisiae. Mol Pharm 2016; 13:2274-82. [DOI: 10.1021/acs.molpharmaceut.5b00954] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shinichi Ikushiro
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Miyu Nishikawa
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
- Imizu
Institute, TOPU BIO RESEARCH Co., Ltd, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Yuuka Masuyama
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Tadashi Shouji
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Miharu Fujii
- Imizu
Institute, TOPU BIO RESEARCH Co., Ltd, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Masahiro Hamada
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Noriyuki Nakajima
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Moshe Finel
- Division
of Pharmaceutical Chemistry and Technology, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland
| | - Kaori Yasuda
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Masaki Kamakura
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Toshiyuki Sakaki
- Department
of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
- Imizu
Institute, TOPU BIO RESEARCH Co., Ltd, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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72
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Watanasrisin W, Iwatani S, Oura T, Tomita Y, Ikushima S, Chindamporn A, Niimi M, Niimi K, Lamping E, Cannon RD, Kajiwara S. Identification and characterization ofCandida utilismultidrug efflux transporterCuCdr1p. FEMS Yeast Res 2016; 16:fow042. [DOI: 10.1093/femsyr/fow042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2016] [Indexed: 11/12/2022] Open
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73
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Kang XL, Zhang M, Wang K, Qiao XF, Chen MH. MOLECULAR CLONING, EXPRESSION PATTERN OF MULTIDRUG RESISTANCE ASSOCIATED PROTEIN 1 (MRP1, ABCC1) GENE, AND THE SYNERGISTIC EFFECTS OF VERAPAMIL ON TOXICITY OF TWO INSECTICIDES IN THE BIRD CHERRY-OAT APHID. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2016; 92:65-84. [PMID: 27110952 DOI: 10.1002/arch.21334] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 03/07/2016] [Indexed: 06/05/2023]
Abstract
The ATP-binding cassette (ABC) transporters are important transmembrane proteins encoded by a supergene family. The majority of ABC proteins are primary active transporters that bind and hydrolyze ATP to mediate the efflux of a diverse range of substrates across lipid membranes. In this study, we cloned and characterized a putative multidrug resistance associated protein 1 (MRP1) from Rhopalosiphum padi encoded by ABCC1. Structural analysis showed that this protein has structural features typical of the ABC transporter family. Phylogenetic analysis indicated that the amino acid sequence was highly similar that of the corresponding protein from Acyrthosiphon pisum. Real-time quantitative polymerase chain reaction (PCR) analysis showed that ABCC1 was expressed throughout all R. padi developmental stages, with the highest level of expression in the fourth larval instar. We also examined ABCC1 expression in four different tissue types and found that it was most highly expressed in the midgut. Exposing R. padi to imidacloprid and chlorpyrifos increased ABCC1 expression. Furthermore, ABCC1 expression was higher in the imidacloprid-resistant (IR) and chlorpyrifos-resistant (CR) strains than in an insecticide-susceptible strain (SS) of R. padi. Exposing R. padi to verapamil in combination with insecticides significantly increased the toxicity of the insecticides. The respective synergy factor of CR and IR R. padi strain was 1.33 and 1.26, which was lower than that (2.72 and 1.64, respectively) of the SS. Our results clarify the biological function of ABCC1 in R. padi, particularly its role in insecticide resistance, and suggest novel strategies for pest management that use ABC transporter inhibitors to increase the effectiveness of insecticides.
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Affiliation(s)
- Xin-Le Kang
- Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Meng Zhang
- Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Kang Wang
- Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Xian-Feng Qiao
- Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Mao-Hua Chen
- Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
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74
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Correction: Learning from each other: ABC transporter regulation by protein phosphorylation in plant and mammalian systems. Biochem Soc Trans 2016; 44:663-73. [DOI: 10.1042/bst20150128_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Indexed: 12/31/2022]
Abstract
The ABC (ATP-binding cassette) transporter family in higher plants is highly expanded compared with those of mammalians. Moreover, some members of the plant ABCB subfamily display very high substrate specificity compared with their mammalian counterparts that are often associated with multidrug resistance (MDR) phenomena. In this review we highlight prominent functions of plant and mammalian ABC transporters and summarize our knowledge on their post-transcriptional regulation with a focus on protein phosphorylation. A deeper comparison of regulatory events of human cystic fibrosis transmembrane conductance regulator (CFTR) and ABCB1 from the model plant Arabidopsis reveals a surprisingly high degree of similarity. Both physically interact with orthologues of the FK506-binding proteins (FKBPs) that chaperon both transporters to the plasma membrane in an action that seems to involve Hsp90. Further both transporters are phosphorylated at regulatory domains that connect both nucleotide-binding folds. Taken together it appears that ABC transporters exhibit an evolutionary conserved but complex regulation by protein phosphorylation, which apparently is, at least in some cases, tightly connected with protein–protein interactions (PPI).
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75
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Hwang JU, Song WY, Hong D, Ko D, Yamaoka Y, Jang S, Yim S, Lee E, Khare D, Kim K, Palmgren M, Yoon HS, Martinoia E, Lee Y. Plant ABC Transporters Enable Many Unique Aspects of a Terrestrial Plant's Lifestyle. MOLECULAR PLANT 2016; 9:338-355. [PMID: 26902186 DOI: 10.1016/j.molp.2016.02.003] [Citation(s) in RCA: 210] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/11/2016] [Accepted: 02/14/2016] [Indexed: 05/17/2023]
Abstract
Terrestrial plants have two to four times more ATP-binding cassette (ABC) transporter genes than other organisms, including their ancestral microalgae. Recent studies found that plants harboring mutations in these transporters exhibit dramatic phenotypes, many of which are related to developmental processes and functions necessary for life on dry land. These results suggest that ABC transporters multiplied during evolution and assumed novel functions that allowed plants to adapt to terrestrial environmental conditions. Examining the literature on plant ABC transporters from this viewpoint led us to propose that diverse ABC transporters enabled many unique and essential aspects of a terrestrial plant's lifestyle, by transporting various compounds across specific membranes of the plant.
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Affiliation(s)
- Jae-Ung Hwang
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Won-Yong Song
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, Korea
| | - Daewoong Hong
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Donghwi Ko
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Yasuyo Yamaoka
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Sunghoon Jang
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Sojeong Yim
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Eunjung Lee
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Deepa Khare
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Kyungyoon Kim
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Michael Palmgren
- Center for Membrane Pumps in Cells and Disease - PUMPKIN, Danish National Research Foundation, Department of Plant and Environmental Science, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Hwan Su Yoon
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Korea
| | - Enrico Martinoia
- Department of Plant and Microbial Biology, University Zurich, Zurich, 8008 Zurich, Switzerland
| | - Youngsook Lee
- Department of Life Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea; Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, Korea.
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Panapruksachat S, Iwatani S, Oura T, Vanittanakom N, Chindamporn A, Niimi K, Niimi M, Lamping E, Cannon RD, Kajiwara S. Identification and functional characterization of Penicillium marneffei pleiotropic drug resistance transporters ABC1 and ABC2. Med Mycol 2016; 54:478-91. [PMID: 26782644 DOI: 10.1093/mmy/myv117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 12/18/2015] [Indexed: 11/14/2022] Open
Abstract
Penicilliosis caused by the dimorphic fungus Penicillium marneffei is an endemic, AIDS-defining illness and, after tuberculosis and cryptococcosis, the third most common opportunistic infection of AIDS patients in tropical Southeast Asia. Untreated, patients have poor prognosis; however, primary amphotericin B treatment followed by prolonged itraconazole prophylaxis is effective. To identify ATP-binding cassette (ABC) transporters that may play a role in potential multidrug resistance of P. marneffei, we identified and classified all 46 P. marneffei ABC transporters from the genome sequence. PmABC1 and PmABC2 were most similar to the archetype Candida albicans multidrug efflux pump gene CDR1. P. marneffei Abc1p (PmAbc1p) was functionally expressed in Saccharomyces cerevisiae, although at rather low levels, and correctly localized to the plasma membrane, causing cells to be fourfold to eightfold more resistant to azoles and many other xenobiotics than untransformed cells. P. marneffei Abc2p (PmAbc2p) was expressed at similarly low levels, but it had no efflux activity and did not properly localize to the plasma membrane. Interestingly, PmAbc1p mislocalized and lost its transport activity when cells were shifted to 37 °C. We conclude that expression of PmAbc1p in S. cerevisiae confers resistance to several xenobiotics indicating that PmAbc1p may be a multidrug efflux pump.
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Affiliation(s)
| | - Shun Iwatani
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Japan
| | - Takahiro Oura
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Japan
| | | | | | - Kyoko Niimi
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, New Zealand
| | - Masakazu Niimi
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, New Zealand
| | - Erwin Lamping
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, New Zealand
| | - Richard D Cannon
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, New Zealand
| | - Susumu Kajiwara
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Japan
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77
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Favaro L, Corte L, Roscini L, Cagnin L, Tiecco M, Colabella C, Berti A, Basaglia M, Cardinali G, Casella S. A novel FTIR-based approach to evaluate the interactions between lignocellulosic inhibitory compounds and their effect on yeast metabolism. RSC Adv 2016. [DOI: 10.1039/c6ra08859g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
FTIR analysis revealed antagonistic effects between lignocellulosic inhibitory compounds through the metabolomic alterations induced on differentS. cerevisiaestrains.
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Affiliation(s)
- Lorenzo Favaro
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE)
- University of Padova
- Italy
| | - Laura Corte
- Department of Pharmaceutical Sciences-Microbiology
- University of Perugia
- I-06121 Perugia
- Italy
| | - Luca Roscini
- Department of Pharmaceutical Sciences-Microbiology
- University of Perugia
- I-06121 Perugia
- Italy
| | - Lorenzo Cagnin
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE)
- University of Padova
- Italy
| | - Matteo Tiecco
- CEMIN, Centre of Excellence on Nanostructured Innovative Materials
- Department of Chemistry, Biology and Biotechnology
- University of Perugia
- Italy
| | - Claudia Colabella
- Department of Pharmaceutical Sciences-Microbiology
- University of Perugia
- I-06121 Perugia
- Italy
| | - Antonio Berti
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE)
- University of Padova
- Italy
| | - Marina Basaglia
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE)
- University of Padova
- Italy
| | - Gianluigi Cardinali
- Department of Pharmaceutical Sciences-Microbiology
- University of Perugia
- I-06121 Perugia
- Italy
- CEMIN, Centre of Excellence on Nanostructured Innovative Materials
| | - Sergio Casella
- Department of Agronomy Food Natural Resources Animals and Environment (DAFNAE)
- University of Padova
- Italy
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78
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Schlunk I, Krause K, Wirth S, Kothe E. A transporter for abiotic stress and plant metabolite resistance in the ectomycorrhizal fungus Tricholoma vaccinum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19384-19393. [PMID: 25563836 DOI: 10.1007/s11356-014-4044-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Fungi exposed to toxic substances including heavy metals, xenobiotics, or secondary metabolites formed by co-occurring plants or other microorganisms require a detoxification system provided by exporters of several classes of transmembrane proteins. In case of mycorrhiza, plant metabolites need to be exported at the plant interface, while the extraradical hyphae may prevent heavy metal uptake, thus acting as a biofilter to the host plant at high environmental concentrations. One major family of such transporter proteins is the multidrug and toxic compound extrusion (MATE) class, a member of which, Mte1, was studied in the ectomycorrhizal fungus Tricholoma vaccinum. Phylogenetic analyses placed the protein in a subgroup of basidiomycete MATE sequences. The gene mte1 was found to be induced during symbiotic interaction. It mediated detoxification of xenobiotics and metal ions such as Cu, Li, Al, and Ni, as well as secondary plant metabolites if heterologously expressed in Saccharomyces cerevisiae.
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Affiliation(s)
- Ines Schlunk
- Institute of Microbiology, Microbial Communication, Friedrich Schiller University, Neugasse 25, 07743, Jena, Germany
| | - Katrin Krause
- Institute of Microbiology, Microbial Communication, Friedrich Schiller University, Neugasse 25, 07743, Jena, Germany
| | - Sophia Wirth
- Institute of Microbiology, Microbial Communication, Friedrich Schiller University, Neugasse 25, 07743, Jena, Germany
| | - Erika Kothe
- Institute of Microbiology, Microbial Communication, Friedrich Schiller University, Neugasse 25, 07743, Jena, Germany.
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Abstract
In the light of multidrug resistance (MDR) among pathogenic microbes and cancer cells, membrane transporters have gained profound clinical significance. Chemotherapeutic failure, by far, has been attributed mainly to the robust and diverse array of these proteins, which are omnipresent in every stratum of the living world. Candida albicans, one of the major fungal pathogens affecting immunocompromised patients, also develops MDR during the course of chemotherapy. The pivotal membrane transporters that C. albicans has exploited as one of the strategies to develop MDR belongs to either the ATP binding cassette (ABC) or the major facilitator superfamily (MFS) class of proteins. The ABC transporter Candida drug resistance 1 protein (Cdr1p) is a major player among these transporters that enables the pathogen to outplay the battery of antifungals encountered by it. The promiscuous Cdr1 protein fulfills the quintessential need of a model to study molecular mechanisms of multidrug transporter regulation and structure-function analyses of asymmetric ABC transporters. In this review, we cover the highlights of two decades of research on Cdr1p that has provided a platform to study its structure-function relationships and regulatory circuitry for a better understanding of MDR not only in yeast but also in other organisms.
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80
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Cordente AG, Capone DL, Curtin CD. Unravelling glutathione conjugate catabolism in Saccharomyces cerevisiae: the role of glutathione/dipeptide transporters and vacuolar function in the release of volatile sulfur compounds 3-mercaptohexan-1-ol and 4-mercapto-4-methylpentan-2-one. Appl Microbiol Biotechnol 2015; 99:9709-22. [PMID: 26227410 DOI: 10.1007/s00253-015-6833-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/07/2015] [Accepted: 07/11/2015] [Indexed: 11/29/2022]
Abstract
Sulfur-containing aroma compounds are key contributors to the flavour of a diverse range of foods and beverages, such as wine. The tropical fruit characters of Sauvignon Blanc wines are attributed to the presence of the aromatic thiols 3-mercaptohexan-1-ol (3-MH), its acetate ester 3-mercaptohexyl acetate (3-MHA), and 4-mercapto-4-methylpentan-2-one (4-MMP). These aromatic thiols are not detectable in grape juice to any significant extent but are released by yeast during alcoholic fermentation. While the processes involved in the release of 3-MH and 4-MMP from their cysteinylated precursors have been studied extensively, degradation pathways for glutathione S-conjugates (GSH-3-MH and GSH-4-MMP) have not. In this study, a candidate gene approach was taken, focusing on genes known to play a role in glutathione and glutathione-S-conjugate turnover in Saccharomyces cerevisiae. Our results confirm the role of Opt1p as the major transporter responsible for uptake of GSH-3-MH and GSH-4-MMP, and identify vacuolar Ecm38p as a key determinant of 3-MH release from GSH-3-MH. ECM38 was unimportant, on the other hand, for release of 4-MMP, and abolition of vacuolar biogenesis caused an increase in the amount of 4-MMP released. The alternative cytosolic glutathione degradation pathway was not involved in release of either thiol from their glutathionylated precursors. Finally, cycling of GSH-3-MH and/or its breakdown intermediates between the cytosol and the vacuole or extracellular space was implicated in modulation of 3-MH formation. Together, these results provide new targets for development of yeast strains that optimize release of these potent volatile sulfur compounds, and further our understanding of the processes involved in glutathione-S-conjugate turnover.
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Affiliation(s)
- Antonio G Cordente
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond, Adelaide, SA, 5064, Australia
| | - Dimitra L Capone
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond, Adelaide, SA, 5064, Australia
| | - Chris D Curtin
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond, Adelaide, SA, 5064, Australia.
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Gulati S, Balderes D, Kim C, Guo ZA, Wilcox L, Area-Gomez E, Snider J, Wolinski H, Stagljar I, Granato JT, Ruggles KV, DeGiorgis JA, Kohlwein SD, Schon EA, Sturley SL. ATP-binding cassette transporters and sterol O-acyltransferases interact at membrane microdomains to modulate sterol uptake and esterification. FASEB J 2015. [PMID: 26220175 DOI: 10.1096/fj.14-264796] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A key component of eukaryotic lipid homeostasis is the esterification of sterols with fatty acids by sterol O-acyltransferases (SOATs). The esterification reactions are allosterically activated by their sterol substrates, the majority of which accumulate at the plasma membrane. We demonstrate that in yeast, sterol transport from the plasma membrane to the site of esterification is associated with the physical interaction of the major SOAT, acyl-coenzyme A:cholesterol acyltransferase (ACAT)-related enzyme (Are)2p, with 2 plasma membrane ATP-binding cassette (ABC) transporters: Aus1p and Pdr11p. Are2p, Aus1p, and Pdr11p, unlike the minor acyltransferase, Are1p, colocalize to sterol and sphingolipid-enriched, detergent-resistant microdomains (DRMs). Deletion of either ABC transporter results in Are2p relocalization to detergent-soluble membrane domains and a significant decrease (53-36%) in esterification of exogenous sterol. Similarly, in murine tissues, the SOAT1/Acat1 enzyme and activity localize to DRMs. This subcellular localization is diminished upon deletion of murine ABC transporters, such as Abcg1, which itself is DRM associated. We propose that the close proximity of sterol esterification and transport proteins to each other combined with their residence in lipid-enriched membrane microdomains facilitates rapid, high-capacity sterol transport and esterification, obviating any requirement for soluble intermediary proteins.
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Affiliation(s)
- Sonia Gulati
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Dina Balderes
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Christine Kim
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Zhongmin A Guo
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Lisa Wilcox
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Estela Area-Gomez
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Jamie Snider
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Heimo Wolinski
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Igor Stagljar
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Juliana T Granato
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Kelly V Ruggles
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Joseph A DeGiorgis
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Sepp D Kohlwein
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Eric A Schon
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Stephen L Sturley
- *Institute of Human Nutrition, Department of Neurology, **Department of Genetics and Development, and Department of Pediatrics, Columbia University Medical Center, New York, New York, USA; Department of Biological Sciences and Department of Chemistry, Columbia University, New York, New York, USA; Donnelly Center for Cellular and Biomolecular Research, Toronto, Ontario, Canada; Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria; Department of Biology, Providence College, Providence, Rhode Island, USA; and Marine Biological Laboratory, Woods Hole, Massachusetts, USA
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82
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Tsujimoto Y, Shimizu Y, Otake K, Nakamura T, Okada R, Miyazaki T, Watanabe K. Multidrug resistance transporters Snq2p and Pdr5p mediate caffeine efflux in Saccharomyces cerevisiae. Biosci Biotechnol Biochem 2015; 79:1103-10. [DOI: 10.1080/09168451.2015.1010476] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Abstract
SNQ2 was identified as a caffeine-resistance gene by screening a genomic library of Saccharomyces cerevisiae in a multicopy vector YEp24. SNQ2 encodes an ATP-binding cassette transporter and is highly homologous to PDR5. Multicopy of PDR5 also conferred resistance to caffeine, while its resistance was smaller than that of SNQ2. Residual caffeine contents were analyzed after transiently exposing cells to caffeine. The ratios of caffeine contents were 21.3 ± 8.8% (YEp24-SNQ2) and 81.9 ± 8.7% (YEp24-PDR5) relative to control (YEp24, 100%). In addition, multicopies of SNQ2 or PDR5 conferred resistance to rhodamine 6G (R6G), which was widely used as a substrate for transport assay. R6G was exported by both transporters, and their efflux activities were inhibited by caffeine with half-maximal inhibitory concentrations of 5.3 ± 1.9 (YEp24-SNQ2) and 17.2 ± 9.6 mM (YEp24-PDR5). These results demonstrate that Snq2p is a more functional transporter of caffeine than Pdr5p in yeast cells.
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Affiliation(s)
- Yoshiyuki Tsujimoto
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yoshihiro Shimizu
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Kazuya Otake
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Tatsuya Nakamura
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Ryutaro Okada
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Toshitaka Miyazaki
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Kunihiko Watanabe
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
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83
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Carotenuto G, Carrieri R, Tarantino P, Alfieri M, Leone A, De Tommasi N, Lahoz E. Fungistatic activity ofZanthoxylum rhoifoliumLam. bark extracts against fungal plant pathogens and investigation on mechanism of action inBotrytis cinerea. Nat Prod Res 2015; 29:2251-5. [DOI: 10.1080/14786419.2014.1000894] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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85
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Bhati KK, Sharma S, Aggarwal S, Kaur M, Shukla V, Kaur J, Mantri S, Pandey AK. Genome-wide identification and expression characterization of ABCC-MRP transporters in hexaploid wheat. FRONTIERS IN PLANT SCIENCE 2015; 6:488. [PMID: 26191068 PMCID: PMC4486771 DOI: 10.3389/fpls.2015.00488] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/19/2015] [Indexed: 05/18/2023]
Abstract
The ABCC multidrug resistance associated proteins (ABCC-MRP), a subclass of ABC transporters are involved in multiple physiological processes that include cellular homeostasis, metal detoxification, and transport of glutathione-conjugates. Although they are well-studied in humans, yeast, and Arabidopsis, limited efforts have been made to address their possible role in crop like wheat. In the present work, 18 wheat ABCC-MRP proteins were identified that showed the uniform distribution with sub-families from rice and Arabidopsis. Organ-specific quantitative expression analysis of wheat ABCC genes indicated significantly higher accumulation in roots (TaABCC2, TaABCC3, and TaABCC11 and TaABCC12), stem (TaABCC1), leaves (TaABCC16 and TaABCC17), flag leaf (TaABCC14 and TaABCC15), and seeds (TaABCC6, TaABCC8, TaABCC12, TaABCC13, and TaABCC17) implicating their role in the respective tissues. Differential transcript expression patterns were observed for TaABCC genes during grain maturation speculating their role during seed development. Hormone treatment experiments indicated that some of the ABCC genes could be transcriptionally regulated during seed development. In the presence of Cd or hydrogen peroxide, distinct molecular expression of wheat ABCC genes was observed in the wheat seedlings, suggesting their possible role during heavy metal generated oxidative stress. Functional characterization of the wheat transporter, TaABCC13 a homolog of maize LPA1 confirms its role in glutathione-mediated detoxification pathway and is able to utilize adenine biosynthetic intermediates as a substrate. This is the first comprehensive inventory of wheat ABCC-MRP gene subfamily.
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Affiliation(s)
- Kaushal K. Bhati
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Shivani Sharma
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Sipla Aggarwal
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Mandeep Kaur
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Vishnu Shukla
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Jagdeep Kaur
- Department of Biotechnology, Panjab UniversityPunjab, India
| | - Shrikant Mantri
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
| | - Ajay K. Pandey
- Department of Biotechnology, National Agri-Food Biotechnology InstitutePunjab, India
- *Correspondence: Ajay K. Pandey, Department of Biotechnology, National Agri-Food Biotechnology Institute, C-127, Industrial Area, S.A.S. Nagar, Phase 8, Mohali-160071, Punjab, India
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Al-Zahrani A, Cant N, Kargas V, Rimington T, Aleksandrov L, R. Riordan J, C. Ford R. Structure of the cystic fibrosis transmembrane conductance regulator in the inward-facing conformation revealed by single particle electron microscopy. AIMS BIOPHYSICS 2015. [DOI: 10.3934/biophy.2015.2.131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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87
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Wei W, Smith N, Wu X, Kim H, Seravalli J, Khalimonchuk O, Lee J. YCF1-mediated cadmium resistance in yeast is dependent on copper metabolism and antioxidant enzymes. Antioxid Redox Signal 2014; 21:1475-89. [PMID: 24444374 PMCID: PMC4158973 DOI: 10.1089/ars.2013.5436] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIMS Acquisition and detoxification of metal ions are vital biological processes. Given the requirement of metallochaperones in cellular copper distribution and metallation of cuproproteins, this study investigates whether the metallochaperones also deliver metal ions for transporters functioning in metal detoxification. RESULTS Resistance to excess cadmium and copper of the yeast Saccharomyces cerevisiae, which is conferred by PCA1 and CaCRP1 metal efflux P-type ATPases, respectively, does not rely on known metallochaperones, Atx1p, Ccs1p, and Cox17p. Copper deficiency induced by the expression of CaCRP1 encoding a copper exporter occurs in the absence of Atx1p. Intriguingly, CCS1 encoding the copper chaperone for superoxide dismutase 1 (Sod1p) is necessary for cadmium resistance that is mediated by Ycf1p, a vacuolar cadmium sequestration transporter. This is attributed to Ccs1p's role in the maturation of Sod1p rather than its direct interaction with Ycf1p for cadmium transfer. Functional defect in Ycf1p associated with the absence of Sod1p as well as another antioxidant enzyme Glr1p is rescued by anaerobic growth or substitutions of specific cysteine residues of Ycf1p to alanine or serine. This further supports oxidative inactivation of Ycf1p in the absence of Ccs1p, Sod1p, or Glr1p. INNOVATION These results provide new insights into the mechanisms of metal metabolism, interaction among metal ions, and the roles for antioxidant systems in metal detoxification. CONCLUSION Copper metabolism and antioxidant enzymes maintain the function of Ycf1p for cadmium defense.
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Affiliation(s)
- Wenzhong Wei
- Department of Biochemistry, Redox Biology Center, University of Nebraska-Lincoln , Lincoln, Nebraska
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88
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Sousa CA, Hanselaer S, Soares EV. ABCC subfamily vacuolar transporters are involved in Pb (lead) detoxification in Saccharomyces cerevisiae. Appl Biochem Biotechnol 2014; 175:65-74. [PMID: 25240850 DOI: 10.1007/s12010-014-1252-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 09/10/2014] [Indexed: 01/12/2023]
Abstract
The present work has as objective to contribute for the elucidation of the mechanism associated with Pb detoxification, using the yeast Saccharomyces cerevisiae as a model organism. The deletion of GTT1 or GTT2 genes, coding for functional glutathione transferases (GST) enzymes in S. cerevisiae, caused an increased susceptibility to high Pb concentrations (500-1000 μmol L(-1)). These results suggest that the formation of glutathione-Pb conjugate (GS-Pb), dependent of GSTs, is important in Pb detoxification. The involvement of ATP-binding cassette (ABC) vacuolar transporters, belonging to class C subfamily (ABCC) in vacuolar compartmentalization of Pb, was evaluated. For this purpose, mutant strains disrupted in YCF1, VMR1, YBT1 or BPT 1 genes were used. All mutants tested, without vacuolar ABCC transporters, presented an increased sensitivity to 500-1000 μmol L(-1) Pb comparative to wild-type strain. Taken together, the obtained results suggest that Pb detoxification, by vacuolar compartmentalization, can occur as a result of the concerted action of GSTs and vacuolar ABCC transporters. Pb is conjugated with glutathione, catalysed by glutathione transferases and followed to the transport of GS-Pb conjugate to the vacuole by ABCC transporters.
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Affiliation(s)
- Cátia A Sousa
- Bioengineering Laboratory-CIETI, Chemical Engineering Department, ISEP-School of Engineering of Polytechnic Institute of Porto, Rua Dr António Bernardino de Almeida, 431, 4200-072, Porto, Portugal
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Identification of genomic binding sites for Candida glabrata Pdr1 transcription factor in wild-type and ρ0 cells. Antimicrob Agents Chemother 2014; 58:6904-12. [PMID: 25199772 DOI: 10.1128/aac.03921-14] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The fungal pathogen Candida glabrata is an emerging cause of candidiasis in part owing to its robust ability to acquire tolerance to the major clinical antifungal drug fluconazole. Similar to the related species Candida albicans, C. glabrata most typically gains azole tolerance via transcriptional induction of a suite of resistance genes, including a locus encoding an ABCG-type ATP-binding cassette (ABC) transporter that is referred to as CDR1 in Candida species. In C. glabrata, CDR1 expression is controlled primarily by the activity of a transcriptional activator protein called Pdr1. Strains exhibiting reduced azole susceptibility often contain substitution mutations in PDR1 that in turn lead to elevated mRNA levels of target genes with associated azole resistance. Pdr1 activity is also induced upon loss of the mitochondrial genome status and upon challenge by azole drugs. While extensive analyses of the transcriptional effects of Pdr1 have identified a number of genes that are regulated by this factor, we cannot yet separate direct from indirect target genes. Here we used chromatin immunoprecipitation (ChIP) coupled with high-throughput sequencing (ChIP-seq) to identify the promoters and associated genes directly regulated by Pdr1. These genes include many that are shared with the yeast Saccharomyces cerevisiae but others that are unique to C. glabrata, including the ABC transporter-encoding locus YBT1, genes involved in DNA repair, and several others. These data provide the outline for understanding the primary response genes involved in production of Pdr1-dependent azole resistance in C. glabrata.
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90
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Mojzita D, Oja M, Rintala E, Wiebe M, Penttilä M, Ruohonen L. Transcriptome of Saccharomyces cerevisiae during production of D-xylonate. BMC Genomics 2014; 15:763. [PMID: 25192596 PMCID: PMC4176587 DOI: 10.1186/1471-2164-15-763] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 08/29/2014] [Indexed: 11/24/2022] Open
Abstract
Background Production of D-xylonate by the yeast S. cerevisiae provides an example of bioprocess development for sustainable production of value-added chemicals from cheap raw materials or side streams. Production of D-xylonate may lead to considerable intracellular accumulation of D-xylonate and to loss of viability during the production process. In order to understand the physiological responses associated with D-xylonate production, we performed transcriptome analyses during D-xylonate production by a robust recombinant strain of S. cerevisiae which produces up to 50 g/L D-xylonate. Results Comparison of the transcriptomes of the D-xylonate producing and the control strain showed considerably higher expression of the genes controlled by the cell wall integrity (CWI) pathway and of some genes previously identified as up-regulated in response to other organic acids in the D-xylonate producing strain. Increased phosphorylation of Slt2 kinase in the D-xylonate producing strain also indicated that D-xylonate production caused stress to the cell wall. Surprisingly, genes encoding proteins involved in translation, ribosome structure and RNA metabolism, processes which are commonly down-regulated under conditions causing cellular stress, were up-regulated during D-xylonate production, compared to the control. The overall transcriptional responses were, therefore, very dissimilar to those previously reported as being associated with stress, including stress induced by organic acid treatment or production. Quantitative PCR analyses of selected genes supported the observations made in the transcriptomic analysis. In addition, consumption of ethanol was slower and the level of trehalose was lower in the D-xylonate producing strain, compared to the control. Conclusions The production of organic acids has a major impact on the physiology of yeast cells, but the transcriptional responses to presence or production of different acids differs considerably, being much more diverse than responses to other stresses. D-Xylonate production apparently imposed considerable stress on the cell wall. Transcriptional data also indicated that activation of the PKA pathway occurred during D-xylonate production, leaving cells unable to adapt normally to stationary phase. This, together with intracellular acidification, probably contributes to cell death. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-763) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dominik Mojzita
- VTT Technical Research Centre of Finland, P,O, Box 1000, Espoo FI-02044 VTT, Finland.
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91
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Mezzetti F, De Vero L, Giudici P. EvolvedSaccharomyces cerevisiaewine strains with enhanced glutathione production obtained by an evolution-based strategy. FEMS Yeast Res 2014; 14:977-87. [DOI: 10.1111/1567-1364.12186] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 06/25/2014] [Accepted: 07/13/2014] [Indexed: 11/30/2022] Open
Affiliation(s)
- Francesco Mezzetti
- Department of Life Sciences; University of Modena and Reggio Emilia; Reggio Emilia Italy
| | - Luciana De Vero
- Department of Life Sciences; University of Modena and Reggio Emilia; Reggio Emilia Italy
| | - Paolo Giudici
- Department of Life Sciences; University of Modena and Reggio Emilia; Reggio Emilia Italy
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92
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Moulis JM, Bourguignon J, Catty P. Cadmium. BINDING, TRANSPORT AND STORAGE OF METAL IONS IN BIOLOGICAL CELLS 2014. [DOI: 10.1039/9781849739979-00695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Cadmium is not an essential element for life. It is geologically marginal but anthropogenic activities have contributed significantly to its dispersion in the environment and to cadmium exposure of living species. The natural speciation of the divalent cation Cd2+ is dominated by its high propensity to bind to sulfur ligands, but Cd2+ may also occupy sites providing imidazole and carboxylate ligands. It binds to cell walls by passive adsorption (bio-sorption) and it may interact with surface receptors. Cellular uptake can occur by ion mimicry through a variety of transporters of essential divalent cations, but not always. Once inside cells, Cd2+ preferentially binds to thiol-rich molecules. It can accumulate in intracellular vesicles. It may also be transported over long distances within multicellular organisms and be trapped in locations devoid of efficient excretion systems. These locations include the renal cortex of animals and the leaves of hyper-accumulating plants. No specific regulatory mechanism monitors Cd2+ cellular concentrations. Thiol recruitment by cadmium is a major interference mechanism with many signalling pathways that rely on thiolate-disulfide equilibria and other redox-related processes. Cadmium thus compromises the antioxidant intracellular response that relies heavily on molecules with reactive thiolates. These biochemical features dominate cadmium toxicity, which is complex because of the diversity of the biological targets and the consequent pleiotropic effects. This chapter compares the cadmium-handling systems known throughout phylogeny and highlights the basic principles underlying the impact of cadmium in biology.
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Affiliation(s)
- Jean-Marc Moulis
- CEA, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire Chimie et Biologie des Métaux 17 rue des Martyrs F-38054 Grenoble France
- CNRS UMR5249 F-38054 Grenoble France
- Université Joseph Fourier-Grenoble I UMR5249 F-38041 Grenoble France
| | - Jacques Bourguignon
- CEA, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire Physiologie Cellulaire et Végétale F-38054 Grenoble France
- CNRS UMR5168 F-38054 Grenoble France
- Université Joseph Fourier-Grenoble I UMR5168 F-38041 Grenoble France
- INRA USC1359 F-38054 Grenoble France
| | - Patrice Catty
- CEA, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire Chimie et Biologie des Métaux 17 rue des Martyrs F-38054 Grenoble France
- CNRS UMR5249 F-38054 Grenoble France
- Université Joseph Fourier-Grenoble I UMR5249 F-38041 Grenoble France
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93
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Sasser TL, Fratti RA. Class C ABC transporters and Saccharomyces cerevisiae vacuole fusion. CELLULAR LOGISTICS 2014; 4:e943588. [PMID: 25610719 DOI: 10.4161/21592780.2014.943588] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 06/18/2014] [Indexed: 01/05/2023]
Abstract
Membrane fusion is carried out by core machinery that is conserved throughout eukaryotes. This is comprised of Rab GTPases and their effectors, and SNARE proteins, which together are sufficient to drive the fusion of reconstituted proteoliposomes. However, an outer layer of factors that are specific to individual trafficking pathways in vivo regulates the spatial and temporal occurrence of fusion. The homotypic fusion of Saccharomyces cerevisiae vacuolar lysosomes utilizes a growing set of factors to regulate the fusion machinery that include members of the ATP binding cassette (ABC) transporter family. Yeast vacuoles have five class C ABC transporters that are known to transport a variety of toxins into the vacuole lumen as part of detoxifying the cell. We have found that ABCC transporters can also regulate vacuole fusion through novel mechanisms. For instance Ybt1 serves as negative regulator of fusion through its effects on vacuolar Ca2+ homeostasis. Additional studies showed that Ycf1 acts as a positive regulator by affecting the efficient recruitment of the SNARE Vam7. Finally, we discuss the potential interface between the translocation of lipids across the membrane bilayer, also known as lipid flipping, and the efficiency of fusion.
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Key Words
- ABC, ATP binding cassette
- Bpt1
- Ca2+ homeostasis
- DAG, diacylglycerol
- HOPS, homotypic fusion and vacuole protein sorting complex
- MDR, multidrug resistance
- MSD, membrane spanning domain
- NBD, nucleotide binding domain
- Nft1
- PA, phosphatidic acid
- PC, phosphatidylcholine
- PE, phosphatidylethanolamine
- PI(3, 5)P2, phosphatidylinositol 3, 5-bisphosphate
- PI, phosphatidylinositol
- PI3P
- PI3P, phosphatidylinositol 3-phosphate
- PS, phosphatidylserine
- PX, phox homology
- SNARE
- SNARE, soluble N-ethylmaleimide-sensitive factor attachment protein receptors
- Vam7
- Vmr1
- Ybt1
- Ycf1
- lipid flipping
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Affiliation(s)
- Terry L Sasser
- Department of Biochemistry; University of Illinois at Urbana-Champaign ; Urbana, IL USA
| | - Rutilio A Fratti
- Department of Biochemistry; University of Illinois at Urbana-Champaign ; Urbana, IL USA
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94
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Gil FN, Becker JD, Viegas CA. Potential mechanisms underlying response to effects of the fungicide pyrimethanil from gene expression profiling in Saccharomyces cerevisiae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5237-5247. [PMID: 24835131 DOI: 10.1021/jf5007775] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Pyrimethanil is a fungicide mostly applied in vineyards. When misused, residue levels detected in grape must or in the environment may be of concern. The present work aimed to analyze mechanisms underlying response to deleterious effects of pyrimethanil in the eukaryotic model Saccharomyces cerevisiae. Pyrimethanil concentration-dependent effects at phenotypic (inhibition of growth) and transcriptomic levels were examined. For transcriptional profiling, analysis focused on two sublethal exposure conditions that inhibited yeast growth by 20% or 50% compared with control cells not exposed to the fungicide. Gene expression modifications increased with the magnitude of growth inhibition, in numbers and fold-change of differentially expressed genes and in diversity of over-represented functional categories. These included mostly biosynthesis of arginine and sulfur amino acids metabolism, as well as energy conservation, antioxidant response, and multidrug transport. Several pyrimethanil-responsive genes encoded proteins sharing significant homology with proteins from phytopathogenic fungi and ecologically relevant higher eukaryotes.
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Affiliation(s)
- Fátima N Gil
- Department of Bioengineering, Instituto Superior Técnico, and †IBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Universidade de Lisboa , Avenida Rovisco Pais, 1049-001 Lisbon, Portugal
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95
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Korolnek T, Zhang J, Beardsley S, Scheffer GL, Hamza I. Control of metazoan heme homeostasis by a conserved multidrug resistance protein. Cell Metab 2014; 19:1008-19. [PMID: 24836561 PMCID: PMC4052561 DOI: 10.1016/j.cmet.2014.03.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 01/23/2014] [Accepted: 03/25/2014] [Indexed: 01/30/2023]
Abstract
Several lines of evidence predict that specific pathways must exist in metazoans for the escorted movement of heme, an essential but cytotoxic iron-containing organic ring, within and between cells and tissues, but these pathways remain obscure. In Caenorhabditis elegans, embryonic development is inextricably dependent on both maternally derived heme and environmentally acquired heme. Here, we show that the multidrug resistance protein MRP-5/ABCC5 likely acts as a heme exporter, and targeted depletion of mrp-5 in the intestine causes embryonic lethality. Transient knockdown of mrp5 in zebrafish leads to morphological defects and failure to hemoglobinize red blood cells. MRP5 resides on the plasma membrane and endosomal compartments and regulates export of cytosolic heme. Together, our genetic studies in worms, yeast, zebrafish, and mammalian cells identify a conserved, physiological role for a multidrug resistance protein in regulating systemic heme homeostasis. We envision other MRP family members may play similar unanticipated physiological roles in animal development.
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Affiliation(s)
- Tamara Korolnek
- Department of Animal and Avian Sciences and Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA
| | - Jianbing Zhang
- Department of Animal and Avian Sciences and Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA
| | - Simon Beardsley
- Department of Animal and Avian Sciences and Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA
| | - George L Scheffer
- Department of Pathology, VU University Medical Center, 1007 MB Amsterdam, the Netherlands
| | - Iqbal Hamza
- Department of Animal and Avian Sciences and Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA.
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96
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Construction of Multidrug-Sensitive Yeast with High Sporulation Efficiency. Biosci Biotechnol Biochem 2014; 75:1588-93. [DOI: 10.1271/bbb.110311] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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97
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Mok S, Liong KY, Lim EH, Huang X, Zhu L, Preiser PR, Bozdech Z. Structural polymorphism in the promoter of pfmrp2 confers Plasmodium falciparum tolerance to quinoline drugs. Mol Microbiol 2014; 91:918-34. [PMID: 24372851 PMCID: PMC4286016 DOI: 10.1111/mmi.12505] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2013] [Indexed: 12/17/2022]
Abstract
Drug resistance in Plasmodium falciparum remains a challenge for the malaria eradication programmes around the world. With the emergence of artemisinin resistance, the efficacy of the partner drugs in the artemisinin combination therapies (ACT) that include quinoline-based drugs is becoming critical. So far only few resistance markers have been identified from which only two transmembrane transporters namely PfMDR1 (an ATP-binding cassette transporter) and PfCRT (a drug-metabolite transporter) have been experimentally verified. Another P. falciparum transporter, the ATP-binding cassette containing multidrug resistance-associated protein (PfMRP2) represents an additional possible factor of drug resistance in P. falciparum. In this study, we identified a parasite clone that is derived from the 3D7 P. falciparum strain and shows increased resistance to chloroquine, mefloquine and quinine through the trophozoite and schizont stages. We demonstrate that the resistance phenotype is caused by a 4.1 kb deletion in the 5′ upstream region of the pfmrp2 gene that leads to an alteration in the pfmrp2 transcription and thus increased level of PfMRP2 protein. These results also suggest the importance of putative promoter elements in regulation of gene expression during the P. falciparum intra-erythrocytic developmental cycle and the potential of genetic polymorphisms within these regions to underlie drug resistance.
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Affiliation(s)
- Sachel Mok
- School of Biological Sciences, Nanyang Technological University, Singapore
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98
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Mira NP, Münsterkötter M, Dias-Valada F, Santos J, Palma M, Roque FC, Guerreiro JF, Rodrigues F, Sousa MJ, Leão C, Güldener U, Sá-Correia I. The genome sequence of the highly acetic acid-tolerant Zygosaccharomyces bailii-derived interspecies hybrid strain ISA1307, isolated from a sparkling wine plant. DNA Res 2014; 21:299-313. [PMID: 24453040 PMCID: PMC4060950 DOI: 10.1093/dnares/dst058] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In this work, it is described the sequencing and annotation of the genome of the yeast strain ISA1307, isolated from a sparkling wine continuous production plant. This strain, formerly considered of the Zygosaccharomyces bailii species, has been used to study Z. bailii physiology, in particular, its extreme tolerance to acetic acid stress at low pH. The analysis of the genome sequence described in this work indicates that strain ISA1307 is an interspecies hybrid between Z. bailii and a closely related species. The genome sequence of ISA1307 is distributed through 154 scaffolds and has a size of around 21.2 Mb, corresponding to 96% of the genome size estimated by flow cytometry. Annotation of ISA1307 genome includes 4385 duplicated genes (∼90% of the total number of predicted genes) and 1155 predicted single-copy genes. The functional categories including a higher number of genes are ‘Metabolism and generation of energy’, ‘Protein folding, modification and targeting’ and ‘Biogenesis of cellular components’. The knowledge of the genome sequence of the ISA1307 strain is expected to contribute to accelerate systems-level understanding of stress resistance mechanisms in Z. bailii and to inspire and guide novel biotechnological applications of this yeast species/strain in fermentation processes, given its high resilience to acidic stress. The availability of the ISA1307 genome sequence also paves the way to a better understanding of the genetic mechanisms underlying the generation and selection of more robust hybrid yeast strains in the stressful environment of wine fermentations.
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Affiliation(s)
- Nuno P Mira
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Martin Münsterkötter
- Institute of Bioinformatics and Systems Biology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Ingolstädter Landstrasse 1, Neuherberg D-85764, Germany
| | - Filipa Dias-Valada
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Júlia Santos
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal ICVS/3B's-PT Government Associate Laboratory, Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal
| | - Margarida Palma
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Filipa C Roque
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Joana F Guerreiro
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Fernando Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal ICVS/3B's-PT Government Associate Laboratory, Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal
| | - Maria João Sousa
- Centre of Molecular and Environmental Biology (CBMA)/Department of Biology, University of Minho, Braga 4710-057, Portugal
| | - Cecília Leão
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal ICVS/3B's-PT Government Associate Laboratory, Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga 4710-057, Portugal
| | - Ulrich Güldener
- Institute of Bioinformatics and Systems Biology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Ingolstädter Landstrasse 1, Neuherberg D-85764, Germany
| | - Isabel Sá-Correia
- IBB-Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
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99
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It Takes More Than Two to Tango: Regulation of Plant ABC Transporters. SIGNALING AND COMMUNICATION IN PLANTS 2014. [DOI: 10.1007/978-3-319-06511-3_13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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100
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Yeast ABC proteins involved in multidrug resistance. Cell Mol Biol Lett 2013; 19:1-22. [PMID: 24297686 PMCID: PMC6275743 DOI: 10.2478/s11658-013-0111-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 11/27/2013] [Indexed: 01/03/2023] Open
Abstract
Pleiotropic drug resistance is a complex phenomenon that involves many proteins that together create a network. One of the common mechanisms of multidrug resistance in eukaryotic cells is the active efflux of a broad range of xenobiotics through ATP-binding cassette (ABC) transporters. Saccharomyces cerevisiae is often used as a model to study such activity because of the functional and structural similarities of its ABC transporters to mammalian ones. Numerous ABC transporters are found in humans and some are associated with the resistance of tumors to chemotherapeutics. Efflux pump modulators that change the activity of ABC proteins are the most promising candidate drugs to overcome such resistance. These modulators can be chemically synthesized or isolated from natural sources (e.g., plant alkaloids) and might also be used in the treatment of fungal infections. There are several generations of synthetic modulators that differ in specificity, toxicity and effectiveness, and are often used for other clinical effects.
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