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Iron metabolism and its contribution to cancer (Review). Int J Oncol 2019; 54:1143-1154. [PMID: 30968149 DOI: 10.3892/ijo.2019.4720] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/21/2019] [Indexed: 01/12/2023] Open
Abstract
Iron is an essential element for biological processes. Iron homeostasis is regulated through several mechanisms, from absorption by enterocytes to recycling by macrophages and storage in hepatocytes. Iron has dual properties, which may facilitate tumor growth or cell death. Cancer cells exhibit an increased dependence on iron compared with normal cells. Macrophages potentially deliver iron to cancer cells, resulting in tumor promotion. Mitochondria utilize cellular iron to synthesize cofactors, including heme and iron sulfur clusters. The latter is composed of essential enzymes involved in DNA synthesis and repair, oxidation‑reduction reactions, and other cellular processes. However, highly increased iron concentrations result in cell death through membrane lipid peroxidation, termed ferroptosis. Ferroptosis, an emerging pathway for cancer treatment, is similar to pyroptosis, apoptosis and necroptosis. In the present review, previous studies on the physiology of iron metabolism and its role in cancer are summarized. Additionally, the significance of iron regulation, and the association between iron homeostasis and carcinogenic mechanisms are discussed.
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Guo X, Zhao B, Fan Z, Yang D, Zhang N, Wu Q, Yu B, Zhou S, Kalinina TA, Belskaya NP. Discovery of Novel Thiazole Carboxamides as Antifungal Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:1647-1655. [PMID: 30669828 DOI: 10.1021/acs.jafc.8b06935] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To contribute molecular diversity for novel fungicide development, a series of novel thiazole carboxamides were rationally designed, synthesized, and characterized with the succinate dehydrogenase (SDH) as target. Bioassay indicated that compound 6g showed the similar excellent SDH inhibition as that of Thifluzamide with IC50 of 0.56 mg/L and 0.55 mg/L, respectively. Some derivatives displayed improved in vitro fungicidal activities against Rhizoctonia cerealis and Sclerotinia sclerotiorum with EC50 of 1.2-16.4 mg/L and 0.5-1.9 mg/L. Surprisingly, 6g showed promising in vitro fungicidal activities against R. cerealis and S. sclerotiorum with EC50 of 6.2 and 0.6 mg/L, respectively, which was superior to Thifluzamide with the EC50 of 22.1 and 4.4 mg/L, respectively. Additionally, compounds 6c and 6g displayed excellent in vivo fungicidal activities against S. sclerotiorum on Brassica napus L. leaves with protective activity of 75.4% and 67.3% at 2.0 mg/L, respectively, while Thifluzamide without activity at 5.0 mg/L. Transcriptomic analysis of S. sclerotiorum treated with 6g by RNA sequencing indicated the down-regulation of succinate dehydrogenase gene SDHA and SDHB, and the inhibition of the TCA-cycle.
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Affiliation(s)
- Xiaofeng Guo
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Bin Zhao
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Nankai University , Tianjin 300071 , P. R. China
| | - Dongyan Yang
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Nailou Zhang
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Qifan Wu
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Bin Yu
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Shuang Zhou
- State Key Laboratory of Elemento-Organic Chemistry , College of Chemistry, Nankai University , Tianjin 300071 , P. R. China
| | - Tatiana A Kalinina
- The Ural Federal University Named after the First President of Russia B. N. Yeltsin , Yeltsin UrFU 620002 , Ekaterinburg , Russia
| | - Nataliya P Belskaya
- The Ural Federal University Named after the First President of Russia B. N. Yeltsin , Yeltsin UrFU 620002 , Ekaterinburg , Russia
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Borah SM, Jha AN. Identification and analysis of structurally critical fragments in HopS2. BMC Bioinformatics 2019; 19:552. [PMID: 30717655 PMCID: PMC7394326 DOI: 10.1186/s12859-018-2551-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 11/30/2018] [Indexed: 12/02/2022] Open
Abstract
Background Among the diverse roles of the Type III secretion-system (T3SS), one of the notable functions is that it serves as unique nano machineries in gram-negative bacteria that facilitate the translocation of effector proteins from bacteria into their host. These effector proteins serve as potential targets to control the pathogenicity conferred to the bacteria. Despite being ideal choices to disrupt bacterial systems, it has been quite an ordeal in the recent times to experimentally reveal and establish a concrete sequence-structure-function relationship for these effector proteins. This work focuses on the disease-causing spectrum of an effector protein, HopS2 secreted by the phytopathogen Pseudomonas syringae pv. tomato DC3000. Results The study addresses the structural attributes of HopS2 via a bioinformatics approach to by-pass some of the experimental shortcomings resulting in mining some critical regions in the effector protein. We have elucidated the functionally important regions of HopS2 with the assistance of sequence and structural analyses. The sequence based data supports the presence of important regions in HopS2 that are present in the other functional parts of Hop family proteins. Furthermore, these regions have been validated by an ab-initio structure prediction of the protein followed by 100 ns long molecular dynamics (MD) simulation. The assessment of these secondary structural regions has revealed the stability and importance of these regions in the protein structure. Conclusions The analysis has provided insights on important functional regions that may be vital to the effector functioning. In dearth of ample experimental evidence, such a bioinformatics approach has helped in the revelation of a few structural regions which will aid in future experiments to attain and evaluate the structural and functional aspects of this protein family. Electronic supplementary material The online version of this article (10.1186/s12859-018-2551-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sapna M Borah
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam, 784028, India
| | - Anupam Nath Jha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam, 784028, India.
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Zhao H, Li T, Zhao Y, Tan T, Liu C, Liu Y, Chang L, Huang N, Li C, Fan Y, Yu Y, Li R, Qiao J. Single-Cell Transcriptomics of Human Oocytes: Environment-Driven Metabolic Competition and Compensatory Mechanisms During Oocyte Maturation. Antioxid Redox Signal 2019; 30:542-559. [PMID: 29486586 PMCID: PMC6338670 DOI: 10.1089/ars.2017.7151] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIMS The mechanisms coordinating maturation with an environment-driven metabolic shift, a critical step in determining the developmental potential of human in vitro maturation (IVM) oocytes, remain to be elucidated. Here we explored the key genes regulating human oocyte maturation using single-cell RNA sequencing and illuminated the compensatory mechanism from a metabolic perspective by analyzing gene expression. RESULTS Three key genes that encode CoA-related enzymes were screened from the RNA sequencing data. Two of them, ACAT1 and HADHA, were closely related to the regulation of substrate production in the Krebs cycle. Dysfunction of the Krebs cycle was induced by decreases in the activity of specific enzymes. Furthermore, the activator of these enzymes, the calcium concentration, was also decreased because of the failure of influx of exogenous calcium. Although release of endogenous calcium from the endoplasmic reticulum and mitochondria met the requirement for maturation, excessive release resulted in aneuploidy and developmental incompetence. High nicotinamide nucleotide transhydrogenase expression induced NADPH dehydrogenation to compensate for the NADH shortage resulting from the dysfunction of the Krebs cycle. Importantly, high NADP+ levels activated DPYD to enhance the repair of DNA double-strand breaks to maintain euploidy. INNOVATION The present study shows for the first time that exposure to the in vitro environment can lead to the decline of energy metabolism in human oocytes during maturation but that a compensatory action maintains their developmental competence. CONCLUSION In vitro maturation of human oocytes is mediated through a cascade of competing and compensatory actions driven by genes encoding enzymes.
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Affiliation(s)
- Hongcui Zhao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Tianjie Li
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Yue Zhao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Tao Tan
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China .,2 Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology , Kunming, China
| | - Changyu Liu
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Yali Liu
- 3 Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Liang Chang
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Ning Huang
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Chang Li
- 2 Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology , Kunming, China
| | - Yong Fan
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China .,3 Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Yang Yu
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Rong Li
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Jie Qiao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
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Hallaj Salahipour M, Hasanzadeh S, Malekinejad H, Razi M, Farrokhi‐Ardebili F. Deoxynivalenol reduces quality parameters and increases DNA damage in mice spermatozoa. Andrologia 2019; 51:e13238. [DOI: 10.1111/and.13238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/25/2018] [Accepted: 12/27/2018] [Indexed: 01/08/2023] Open
Affiliation(s)
| | - Shapour Hasanzadeh
- Department of Basic Sciences, Faculty of Veterinary Medicine Urmia University Urmia Iran
| | - Hassan Malekinejad
- Department of Pharmacology & Toxicology, Faculty of Pharmacy Urmia University of Medical Sciences Urmia Iran
| | - Mazdak Razi
- Department of Basic Sciences, Faculty of Veterinary Medicine Urmia University Urmia Iran
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Löbs AK, Schwartz C, Thorwall S, Wheeldon I. Highly Multiplexed CRISPRi Repression of Respiratory Functions Enhances Mitochondrial Localized Ethyl Acetate Biosynthesis in Kluyveromyces marxianus. ACS Synth Biol 2018; 7:2647-2655. [PMID: 30354074 DOI: 10.1021/acssynbio.8b00331] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The emergence of CRISPR-Cas9 for targeted genome editing and regulation has enabled the manipulation of desired traits and enhanced strain development of nonmodel microorganisms. The natural capacity of the yeast Kluyveromyces marxianus to produce volatile esters at high rate and at elevated temperatures make it a potentially valuable production platform for industrial biotechnology. Here, we identify the native localization of ethyl acetate biosynthesis in K. marxianus and use this information to develop a multiplexed CRISPRi system for redirecting carbon flux along central metabolic pathways, increasing ethyl acetate productivity. First, we identified the primary pathways of precursor and acetate ester biosynthesis. A genetic knockout screen revealed that the alcohol acetyltransferase Eat1 is the critical enzyme for ethyl, isoamyl, and phenylethyl acetate production. Truncation studies revealed that high ester biosynthesis is contingent on Eat1 mitochondrial localization. As ethyl acetate is formed from the condensation of ethanol and acetyl-CoA, we modulated expression of the TCA cycle and electron transport chain genes using a highly multiplexed CRISPRi approach. The simultaneous knockdown of ACO2b, SDH2, RIP1, and MSS51 resulted in a 3.8-fold increase in ethyl acetate productivity over the already high natural capacity. This work demonstrates that multiplexed CRISPRi regulation of central carbon flux, supported by a fundamental understanding of pathway biochemistry, is a potent strategy for metabolic engineering in nonconventional microorganisms.
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Affiliation(s)
- Ann-Kathrin Löbs
- Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Cory Schwartz
- Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Sarah Thorwall
- Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Ian Wheeldon
- Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
- Center for Industrial Biotechnology, Bourns College of Engineering, University of California Riverside, Riverside, California 92521, United States
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Paraquat-Mediated Oxidative Stress in Anopheles gambiae Mosquitoes Is Regulated by An Endoplasmic Reticulum (ER) Stress Response. Proteomes 2018; 6:proteomes6040047. [PMID: 30424486 PMCID: PMC6313908 DOI: 10.3390/proteomes6040047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 11/20/2022] Open
Abstract
Paraquat is a potent superoxide (O2−)-inducing agent that is capable of inducing an oxidative imbalance in the mosquito midgut. This oxidative imbalance can super-stress the malaria parasite, leading to arrested development in the mosquito midgut and reduced transmission. While several studies have explored the effect of paraquat on malaria parasites, a fundamental understanding of the mosquito response to this compound remains unknown. Here, we quantified the mosquito midgut proteomic response to a paraquat-laced sugar meal, and found that An. gambiae midguts were enriched in proteins that are indicative of cells under endoplasmic reticulum (ER) stress. We also carried out qRT-PCR analyses for nine prominent thioredoxin (Trx) and glutathione (GSH)-dependent genes in mosquito midguts post P. falciparum blood meal ingestion to evaluate the concordance between transcripts and proteins under different oxidative stress conditions. Our data revealed an absence of significant upregulation in the Trx and GSH-dependent genes following infected blood meal ingestion. These data suggest that the intrinsic tolerance of the mosquito midgut to paraquat-mediated oxidative stress is through an ER stress response. These data indicate that mosquitoes have at least two divergent pathways of managing the oxidative stress that is induced by exogenous compounds, and outline the potential application of paraquat-like drugs to act selectively against malaria parasite development in mosquito midguts, thereby blocking mosquito-to-human transmission.
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Hussein M, Han ML, Zhu Y, Schneider-Futschik EK, Hu X, Zhou QT, Lin YW, Anderson D, Creek DJ, Hoyer D, Li J, Velkov T. Mechanistic Insights From Global Metabolomics Studies into Synergistic Bactericidal Effect of a Polymyxin B Combination With Tamoxifen Against Cystic Fibrosis MDR Pseudomonas aeruginosa. Comput Struct Biotechnol J 2018; 16:587-599. [PMID: 30546859 PMCID: PMC6280556 DOI: 10.1016/j.csbj.2018.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 01/04/2023] Open
Abstract
Polymyxins are amongst the most important antibiotics in modern medicine, in recent times their clinical utility has been overshadowed by nosocomial outbreaks of polymyxin resistant MDR Gram-negative 'superbugs'. An effective strategy to surmount polymyxin resistance is combination therapy with FDA-approved non-antibiotic drugs. Herein we used untargeted metabolomics to investigate the mechanism(s) of synergy between polymyxin B and the selective estrogen receptor modulator (SERM) tamoxifen against a polymyxin-resistant MDR cystic fibrosis (CF) Pseudomonas aeruginosa FADDI-PA006 isolate (polymyxin B MIC=8 mg/L , it is an MDR polymyxin resistant P. aeruginosa isolated from the lungs of a CF patient). The metabolome of FADDI-PA006 was profiled at 15 min, 1 and 4 h following treatment with polymyxin B (2 mg/L), tamoxifen (8 mg/L) either as monotherapy or in combination. At 15 min, the combination treatment induced a marked decrease in lipids, primarily fatty acid and glycerophospholipid metabolites that are involved in the biosynthesis of bacterial membranes. In line with the polymyxin-resistant status of this strain, at 1 h, both polymyxin B and tamoxifen monotherapies produced little effect on bacterial metabolism. In contrast to the combination which induced extensive reduction (≥ 1.0-log2-fold, p ≤ 0.05; FDR ≤ 0.05) in the levels of essential intermediates involved in cell envelope biosynthesis. Overall, these novel findings demonstrate that the primary mechanisms underlying the synergistic bactericidal effect of the combination against the polymyxin-resistant P. aeruginosa CF isolate FADDI-PA006 involves a disruption of the cell envelope biogenesis and an inhibition of aminoarabinose LPS modifications that confer polymyxin resistance.
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Affiliation(s)
- Maytham Hussein
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville 3010, VIC, Australia
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Mei-Ling Han
- Monash Biomedicine Discovery Institute, Department of Microbiology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | - Yan Zhu
- Monash Biomedicine Discovery Institute, Department of Microbiology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | - Elena K. Schneider-Futschik
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville 3010, VIC, Australia
| | - Xiaohan Hu
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville 3010, VIC, Australia
| | - Qi Tony Zhou
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yu-Wei Lin
- Monash Biomedicine Discovery Institute, Department of Microbiology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | - Dovile Anderson
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Darren J. Creek
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Daniel Hoyer
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville 3010, VIC, Australia
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville 3052, VIC, Australia
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla 92037, CA, USA
| | - Jian Li
- Monash Biomedicine Discovery Institute, Department of Microbiology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | - Tony Velkov
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville 3010, VIC, Australia
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Elevated Inactivation Efficacy of a Pulsed UVC Light-Emitting Diode System for Foodborne Pathogens on Selective Media and Food Surfaces. Appl Environ Microbiol 2018; 84:AEM.01340-18. [PMID: 30097449 DOI: 10.1128/aem.01340-18] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 08/02/2018] [Indexed: 12/24/2022] Open
Abstract
UVC light, a strong surface disinfection technology, is used worldwide to ensure not only environmental safety but also food safety. Several drawbacks associated with the use of mercury-containing UV lamps, especially human and environmental health risks, led to the Minamata Convention on Mercury, which prohibits the manufacture and import/export of products containing mercury. Therefore, light-emitting diode (LED)-based UVC irradiation, a new technology that is ecofriendly and represents an effective UV light source, has been researched recently. To date, however, there has been no report describing pulsed UVC-LED irradiation for improvement of inactivation of foodborne pathogens, although much research regarding conventional pulsed xenon lamps has been published. In this investigation, we evaluated the enhanced bactericidal effect of a pulsed UVC-LED system, compared to continuous irradiation, and optimum conditions for maximizing the effect were determined. Also, the differences in inactivation between pulsed and continuous UVC-LED irradiation were determined by inactivation mechanism analyses. The combination of 20-Hz frequency and 50% duty ratio for pulsed UVC-LED irradiation achieved 4- to 5-log-unit reductions of Escherichia coli O157:H7, Salmonella enterica serovar Typhimurium, and Listeria monocytogenes; this combination showed the greatest bactericidal effect among various treatment conditions using 2 or 5 mJ/cm2 In mechanism assessments, membrane integrity (propidium iodide uptake) was not affected by UVC-LED treatment but membrane potential [bis-(1,3-dibutylbarbituric acid)trimethine oxonol [DiBAC4(3)] accumulation] showed significantly different values when pulsed and continuous treatments were compared. Changes in membrane lipid peroxidation and respiratory enzyme activity were attributed to generation of more reactive oxygen species by pulsed UVC-LED irradiation.IMPORTANCE In 2013, the United Nations Environment Programme convened the Minamata Convention on Mercury, which prohibits trade in mercury-containing products in order to ensure human health. It will be effectuated in 2020; use of low-pressure mercury lamps will be discontinued and a new UV light source selected to replace the conventional technology. In this regard, UVC-LEDs have been developed and the fundamental inactivating effect has been researched. However, a pulsed UVC-LED system has not been studied, because of the difficulty of generating a UVC-LED pulse wave. An optical chopper system that physically divides the light with an adjustable blade, with personalized frequency and duty ratio settings, was introduced for generation of pulsed UVC-LED irradiation. This study elucidated the efficacy of a pulsed UVC-LED system and investigated its enhanced bactericidal effect in mechanism analyses.
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Prenatal Maternal Stress from a Natural Disaster Alters Urinary Metabolomic Profiles in Project Ice Storm Participants. Sci Rep 2018; 8:12932. [PMID: 30154530 PMCID: PMC6113208 DOI: 10.1038/s41598-018-31230-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 08/10/2018] [Indexed: 01/18/2023] Open
Abstract
Prenatal stress is known to epigenetically program offspring physiology and behaviour, and may become a risk factor for adult complex diseases. To gain insight into the underlying environment-gene interactions, we used proton nuclear magnetic resonance spectroscopy to analyze urinary metabolomes of male and female adolescents who were in utero during the 1998 Quebec Ice Storm. Metabolomic profiles in adolescent groups were found to be significantly different. Higher prenatal stress exposure generated alterations in metabolic pathways involved in energy metabolism and protein biosynthesis, such as branched-chain amino acid synthesis, alanine metabolism, and ketone body metabolism. Dysregulation of energy and protein metabolism suggests an increased risk of metabolic diseases like insulin resistance, diabetes, and obesity. These findings are consistent with prior observations of physiological phenotypes from this cohort. Understanding the impact of natural disasters on health risks will provide new and improved therapeutic strategies to mitigate stress-associated adverse health outcomes. Using metabolomic biomarkers may also assist in the prediction and prevention of these adverse outcomes.
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Li C, Wang J, Song K, Meng J, Xu F, Li L, Zhang G. Construction of a high-density genetic map and fine QTL mapping for growth and nutritional traits of Crassostrea gigas. BMC Genomics 2018; 19:626. [PMID: 30134839 PMCID: PMC6106840 DOI: 10.1186/s12864-018-4996-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 08/03/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Both growth and nutritional traits are important economic traits of Crassostrea gigas (C. gigas) in industry. But few work has been done to study the genetic architecture of nutritional traits of the oyster. In this study, we constructed a high-density genetic map of C. gigas to help assemble the genome sequence onto chromosomes, meanwhile explore the genetic basis for nutritional traits via quantitative trait loci (QTL) mapping. RESULTS The constructed genetic map contained 5024 evenly distributed markers, with an average marker interval of 0.68 cM, thus representing the densest genetic map produced for the oyster. According to the high collinearity between the consensus map and the oyster genome, 1574 scaffold (about 70%) of the genome sequence of C. gigas were successfully anchored to 10 linkage groups (LGs) of the consensus map. Using this high-qualified genetic map, we then conducted QTL analysis for growth and nutritional traits, the latter of which includes glycogen, amino acid (AA), and fatty acid (FA). Overall, 41 QTLs were detected for 17 traits. In addition, six candidate genes identified in the QTL interval showed significant correlation with the traits on transcriptional levels. These genes include growth-related genes AMY and BMP1, AA metabolism related genes PLSCR and GR, and FA metabolism regulation genes DYRK and ADAMTS. CONCLUSION Using the constructed high-qualified linkage map, this study not only assembled nearly 70% of the oyster genome sequence onto chromosomes, but also identified valuable markers and candidate genes for growth and nutritional traits, especially for AA and FA that undergone few studies before. These findings will facilitate genome assembly and molecular breeding of important economic traits in C. gigas.
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Affiliation(s)
- Chunyan Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China
| | - Jinpeng Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China
| | - Kai Song
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China
| | - Jie Meng
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China
| | - Fei Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China
| | - Li Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
- Laboratory for Marine Fisheries and Aquaculture, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China.
| | - Guofan Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.
- National & Local Joint Engineering Laboratory of Ecological Mariculture, Chinese Academy of Sciences, Institute of Oceanology, Qingdao, China.
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Bi S, Lv QZ, Wang TT, Fuchs BB, Hu DD, Anastassopoulou CG, Desalermos A, Muhammed M, Wu CL, Jiang YY, Mylonakis E, Wang Y. SDH2 is involved in proper hypha formation and virulence in Candida albicans. Future Microbiol 2018; 13:1141-1156. [PMID: 30113213 DOI: 10.2217/fmb-2018-0033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To investigate the role of SDH2 in Candida albicans filamentation and virulence. MATERIALS & METHODS Caenorhabditis elegans and mouse candidiasis models were used to assess the virulence of a sdh2Δ/Δ mutant. Various hypha-inducing media were used to evaluate the hyphal development of C. albicans. DCFH-DA was used to measure intracellular Reactive Oxygen Species (ROS) levels. RESULTS The sdh2Δ/Δ mutant was avirulent in the C. elegans model, hypovirulent in a murine candidiasis model, and defective to form filaments both in vitro and in vivo. Intracellular ROS level increased in the sdh2Δ/Δ mutant, and the filamentation defects of sdh2Δ/Δ were rescued by decreasing intracellular ROS. CONCLUSION SDH2 plays an important role in C. albicans filamentation and virulence probably through affecting intracellular ROS. [Formula: see text].
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Affiliation(s)
- Shuang Bi
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Quan-Zhen Lv
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Tian-Tian Wang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Beth Burgwyn Fuchs
- Division of Infectious Diseases, Rhode Island Hospital, Alpert Medical School of Brown University, RI 02903, USA
| | - Dan-Dan Hu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Cleo G Anastassopoulou
- Division of Genetics, Cell & Developmental Biology, Department of Biology, University of Patras, Patras, Greece.,Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Athanasios Desalermos
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Maged Muhammed
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,Division of Infectious Diseases, and Division of Gastroenterology, Boston Children's Hospital. Department of Medicine, Department of Adult Inpatient Medicine, Newton Wellesley Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Chin-Lee Wu
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Yuan-Ying Jiang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Eleftherios Mylonakis
- Division of Infectious Diseases, Rhode Island Hospital, Alpert Medical School of Brown University, RI 02903, USA.,Division of Genetics, Cell & Developmental Biology, Department of Biology, University of Patras, Patras, Greece
| | - Yan Wang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China.,Division of Infectious Diseases, Rhode Island Hospital, Alpert Medical School of Brown University, RI 02903, USA.,Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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63
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Yao H, Xu X, Zhou Y, Xu C. Impacts of isopyrazam exposure on the development of early-life zebrafish (Danio rerio). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:23799-23808. [PMID: 29876854 DOI: 10.1007/s11356-018-2449-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Isopyrazam (IPZ) is a broad spectrum succinate dehydrogenase inhibitor fungicide. Little is known about its potential ecological risks of aquatic organisms recently. The present study examined the embryonic development effects of zebrafish exposed to IPZ under static condition using a fish embryo toxicity test. The lowest observed effect concentration of IPZ was 0.025 mg/L in 4-day exposure. Developmental abnormalities, including edema, small head deformity, body deformation and decreased pigmentation, and mortality were observed in zebrafish embryos of 0.05 mg/L and higher concentrations, which shown concentration dependency. The heart rate of zebrafish was disrupted by IPZ. Moreover, enzyme and gene experiments shown that IPZ exposure caused oxidative stress of zebrafish. Furthermore, it induced a decrease of succinate dehydrogenase (SDH) enzyme activity and gene transcription level in zebrafish larvae. It can be speculated that IPZ may have a lethal effect on zebrafish, which is accompanied by decreased SDH activity, oxidative stress, and abnormality. These results provide toxicological data about the IPZ on aquatic non-target organisms, which could be useful for further understanding potential environmental risks.
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Affiliation(s)
- Hongzhou Yao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xiao Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ying Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
- Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Chao Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
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64
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Ligustilide Ameliorates Memory Deficiency in APP/PS1 Transgenic Mice via Restoring Mitochondrial Dysfunction. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4606752. [PMID: 30079347 PMCID: PMC6069587 DOI: 10.1155/2018/4606752] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/30/2018] [Accepted: 06/10/2018] [Indexed: 12/20/2022]
Abstract
Ligustilide, the main lipophilic component of Radix angelicae sinensis, has been shown to ameliorate cognitive dysfunction in a few Alzheimer's disease mouse models, but its mechanism is not fully understood. In this study, we employed 7-month-old APP/PS1 mice to explore whether LIG is able to protect against Alzheimer's disease progression. The Morris water maze and Y-maze test results showed that eight weeks of intragastric administration of LIG (10 mg/kg, 40 mg/kg) every day improved memory deficit in APP/PS1 mice. The thioflavin-S staining and Western blot results (Aβ1-42 monomer/oligomer, APP, ADAM10, SAPPα, and PreP) showed that LIG reduced Aβ levels in the brain of APP/PS1 mice. Transmission electron microscopy analysis showed that LIG reduced the mitochondria number and increased the mitochondrial length in the hippocampal CA1 area of APP/PS1 mice. A reduced level of Drp1 (fission) and increased levels of Mfn1, Mfn2, and Opa1 (fusion) were found in APP/PS1 mice treated with LIG. An increased ATP level in the brain and increased activities of cytochrome c oxidase (CCO) and succinate dehydrogenase (SDH) in mitochondrion separated from the hippocampus and cortex revealed that LIG alleviated mitochondrial dysfunction. LIG exerts an antioxidation effect via reducing the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) and increasing the activity of Mn-SOD in the brain. Elevated levels of PSD-95, synaptophysin, and synapsin 1 in both the hippocampus and cortex indicated that LIG provided synaptic protection. These findings show that treatment with LIG ameliorates mitochondrial dynamics and morphology issues, improves mitochondrial function, reduces Aβ levels in the brain, restores the synaptic structure, and ameliorates memory deficit in APP/PS1 mice. These results imply that LIG may serve as a potential antidementia drug.
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65
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SM S, HN S, NA E, AS H. Curative role of pantothenic acid in brain damage of gamma irradiated rats. Indian J Clin Biochem 2018; 33:314-321. [PMID: 30072831 PMCID: PMC6052731 DOI: 10.1007/s12291-017-0683-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 07/17/2017] [Indexed: 12/31/2022]
Abstract
Radiation induced brain damage is associated with impairment of mitochondrial functions, variations in the level of neurotransmitters, and oxidative stress. Mitochondrial function is closely linked to the level of neurotransmitters since the precursors are supplied by the Kreb's cycle intermediates. The objective of this study was to evaluate the influence of pantothenic acid, an essential component in the synthesis of Coenzyme A (CoA), on the activity of the Krebs cycle enzymes, isocitrate dehydrogenase (IDH), α-ketoglutarate dehydrogenase (α-KGDH), and succinate dehydrogenase (SDH); the level of aspartic, glutamic and GABA; the activity of transaminases, and oxidative stress, in the cerebrum of γ-irradiated rats. Pantothenic acid (26 mg/Kg) was orally administered to the rats, 2 h after irradiation and during the following 5 days. Animals were sacrificed the 7th day post-irradiation. The exposure of male albino rats to γ-rays (5 Gy) has triggered oxidative stress notified by a significant elevation in the level of malondialdehyde (MDA), an end product of lipid peroxidation, associated to a significant decrease in the content of phospholipids, and the antioxidant compound glutathione (GSH). The activity of IDH, α-KGDH, and SDH, has significantly decreased, while the level of aspartic, glutamic and GABA has significantly increased. In parallel to these changes, the activity of alanine and aspartate transaminase has significantly increased, compared to their values in the control rats. Pantothenic acid treatment, has significantly attenuated oxidative stress; enhanced the activity of IDH, α-KGDH, and SDH; minimized the increase in the level of amino acids and the activity of transaminases, compared to their values in the cerebrum of irradiated rats. In conclusion, pantothenic acid could improve the level of neurotransmitters amino acids, which depends on the enzymatic activities of Krebs cycle and linked to oxidative stress.
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Affiliation(s)
- Shedid SM
- Department of Radiation Biology, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, 3 Ahmed El-Zomor, Al Manteqah Ath Thamenah, Nasr City, Cairo Governorate 11787 Egypt
| | - Saada HN
- Department of Radiation Biology, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, 3 Ahmed El-Zomor, Al Manteqah Ath Thamenah, Nasr City, Cairo Governorate 11787 Egypt
| | - Eltahawy NA
- Department of Radiation Biology, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, 3 Ahmed El-Zomor, Al Manteqah Ath Thamenah, Nasr City, Cairo Governorate 11787 Egypt
| | - Hammad AS
- Department of Radiation Biology, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, 3 Ahmed El-Zomor, Al Manteqah Ath Thamenah, Nasr City, Cairo Governorate 11787 Egypt
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66
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Bai J, Wu Y, Zhong K, Xiao K, Liu L, Huang Y, Wang Z, Gao H. A Comparative Study on the Effects of Quinic Acid and Shikimic Acid on Cellular Functions of Staphylococcus aureus. J Food Prot 2018; 81:1187-1192. [PMID: 29939792 DOI: 10.4315/0362-028x.jfp-18-014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Quinic acid (QA) and shikimic acid (SA), two kinds of natural organic acids, have been reported to exhibit potent antibacterial activity against Staphylococcus aureus. In this study, the effects of QA and SA on the cellular functions of S. aureus were investigated by measuring the intracellular pH, intracellular and extracellular ATP concentrations, succinate dehydrogenase activity, DNA content, and interactions between SA and QA with S. aureus DNA. Studies of the cellular functions demonstrated that QA could significantly decrease the intracellular pH, whereas SA had no effect on intracellular pH. QA and SA reduced succinate dehydrogenase activity and caused a significant decrease in intracellular ATP concentration but no proportional increase in extracellular ATP. Moreover, QA and SA both could remarkably reduce the DNA content of S. aureus and directly interact with genomic DNA. The results suggested that the effects of QA and SA on cellular functions were distinguishable, although the chemical structures of these two compounds were similar. In conclusion, the results of the present research suggested that SA and QA could be used as antibacterial agents in food preservation.
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Affiliation(s)
- Jinrong Bai
- 1 Healthy Food Evaluation Research Center and.,2 Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, People's Republic of China (ORCID: http://orcid.org/0000-0002-3657-8993 [J.B.]); and
| | - Yanping Wu
- 1 Healthy Food Evaluation Research Center and.,2 Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, People's Republic of China (ORCID: http://orcid.org/0000-0002-3657-8993 [J.B.]); and
| | - Kai Zhong
- 1 Healthy Food Evaluation Research Center and.,2 Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, People's Republic of China (ORCID: http://orcid.org/0000-0002-3657-8993 [J.B.]); and
| | - Kai Xiao
- 2 Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, People's Republic of China (ORCID: http://orcid.org/0000-0002-3657-8993 [J.B.]); and
| | - Lijin Liu
- 3 Department of Public Health, West China Medical School of Sichuan University, Chengdu 610041, People's Republic of China
| | - Yina Huang
- 3 Department of Public Health, West China Medical School of Sichuan University, Chengdu 610041, People's Republic of China
| | - Zhengshu Wang
- 3 Department of Public Health, West China Medical School of Sichuan University, Chengdu 610041, People's Republic of China
| | - Hong Gao
- 1 Healthy Food Evaluation Research Center and.,2 Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, People's Republic of China (ORCID: http://orcid.org/0000-0002-3657-8993 [J.B.]); and
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67
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Na W, Wu YY, Gong PF, Wu CY, Cheng BH, Wang YX, Wang N, Du ZQ, Li H. Embryonic transcriptome and proteome analyses on hepatic lipid metabolism in chickens divergently selected for abdominal fat content. BMC Genomics 2018; 19:384. [PMID: 29792171 PMCID: PMC5966864 DOI: 10.1186/s12864-018-4776-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/10/2018] [Indexed: 12/19/2022] Open
Abstract
Background In avian species, liver is the main site of de novo lipogenesis, and hepatic lipid metabolism relates closely to adipose fat deposition. Using our fat and lean chicken lines of striking differences in abdominal fat content, post-hatch lipid metabolism in both liver and adipose tissues has been studied extensively. However, whether molecular discrepancy for hepatic lipid metabolism exists in chicken embryos remains obscure. Results We performed transcriptome and proteome profiling on chicken livers at five embryonic stages (E7, E12, E14, E17 and E21) between the fat and lean chicken lines. At each stage, 521, 141, 882, 979 and 169 differentially expressed genes were found by the digital gene expression, respectively, which were significantly enriched in the metabolic, PPAR signaling and fatty acid metabolism pathways. Quantitative proteomics analysis found 20 differentially expressed proteins related to lipid metabolism, PPAR signaling, fat digestion and absorption, and oxidative phosphorylation pathways. Combined analysis showed that genes and proteins related to lipid transport (intestinal fatty acid-binding protein, nucleoside diphosphate kinase, and apolipoprotein A-I), lipid clearance (heat shock protein beta-1) and energy metabolism (NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10 and succinate dehydrogenase flavoprotein subunit) were significantly differentially expressed between the two lines. Conclusions For hepatic lipid metabolism at embryonic stages, molecular differences related to lipid transport, lipid clearance and energy metabolism exist between the fat and lean chicken lines, which might contribute to the striking differences of abdominal fat deposition at post-hatch stages. Electronic supplementary material The online version of this article (10.1186/s12864-018-4776-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wei Na
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yuan-Yuan Wu
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Peng-Fei Gong
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Chun-Yan Wu
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Bo-Han Cheng
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yu-Xiang Wang
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ning Wang
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Zhi-Qiang Du
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Hui Li
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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68
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Yao H, Yu J, Zhou Y, Xiang Q, Xu C. The embryonic developmental effect of sedaxane on zebrafish (Danio rerio). CHEMOSPHERE 2018; 197:299-305. [PMID: 29360593 DOI: 10.1016/j.chemosphere.2018.01.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
The succinate dehydrogenase inhibitor (SDHI) fungicides have been extensively used in agriculture, and some of their potential ecological risks to aquatic organisms have been demonstrated recently. Sedaxane (SDX) is a broad spectrum SDHI fungicide. Despite being extensively used in environment, little is known about its potential developmental effect in zebrafish embryo. This study examined the effects of which SDX triggered in zebrafish through embryonic development assessments. Results show that SDX induced mortality, hatch delay and failure in zebrafish embryos, which were concentration dependent. In addition, several developmental abnormalities were observed at 2 mg/L and higher concentrations, including edema, microcephaly, body deformation, and swim bladder not fully inflated. SDX exposure influenced reactive oxygen species, malondialdehyde, peroxidase, glutathione S-transferase, superoxide dismutase and glutathione in live larvae, which indicated that oxidative stress was caused in zebrafish. Furthermore, SDX induced decrease of succinate dehydrogenase activity in zebrafish larvae. These results provide toxicological data of SDX on developing zebrafish embryo, which could be help for further understanding the potential risk on the environment.
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Affiliation(s)
- Hongzhou Yao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jianping Yu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ying Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China; Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Qingqing Xiang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chao Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
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69
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Abstract
Globally, diabetes is the leading cause of chronic kidney disease and end-stage renal disease, which are major risk factors for cardiovascular disease and death. Despite this burden, the factors that precipitate the development and progression of diabetic kidney disease (DKD) remain to be fully elucidated. Mitochondrial dysfunction is associated with kidney disease in nondiabetic contexts, and increasing evidence suggests that dysfunctional renal mitochondria are pathological mediators of DKD. These complex organelles have a broad range of functions, including the generation of ATP. The kidneys are mitochondrially rich, highly metabolic organs that require vast amounts of ATP for their normal function. The delivery of metabolic substrates for ATP production, such as fatty acids and oxygen, is altered by diabetes. Changes in metabolic fuel sources in diabetes to meet ATP demands result in increased oxygen consumption, which contributes to renal hypoxia. Inherited factors including mutations in genes that impact mitochondrial function and/or substrate delivery may also be important risk factors for DKD. Hence, we postulate that the diabetic milieu and inherited factors that underlie abnormalities in mitochondrial function synergistically drive the development and progression of DKD.
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Affiliation(s)
- Josephine M Forbes
- Glycation and Diabetes Group, Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia.,Mater Clinical School, School of Medicine, The University of Queensland, St Lucia, Queensland, Australia.,Departments of Medicine and Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
| | - David R Thorburn
- Departments of Medicine and Paediatrics, The University of Melbourne, Parkville, Victoria, Australia.,Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia
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70
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Short-term succinic acid treatment mitigates cerebellar mitochondrial OXPHOS dysfunction, neurodegeneration and ataxia in a Purkinje-specific spinocerebellar ataxia type 1 (SCA1) mouse model. PLoS One 2017; 12:e0188425. [PMID: 29211771 PMCID: PMC5718515 DOI: 10.1371/journal.pone.0188425] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 11/07/2017] [Indexed: 11/19/2022] Open
Abstract
Mitochondrial dysfunction plays a significant role in neurodegenerative disease including ataxias and other movement disorders, particularly those marked by progressive degeneration in the cerebellum. In this study, we investigate the role of mitochondrial oxidative phosphorylation (OXPHOS) deficits in cerebellar tissue of a Purkinje cell-driven spinocerebellar ataxia type 1 (SCA1) mouse. Using RNA sequencing transcriptomics, OXPHOS complex assembly analysis and oxygen consumption assays, we report that in the presence of mutant polyglutamine-expanded ataxin-1, SCA1 mice display deficits in cerebellar OXPHOS complex I (NADH-coenzyme Q oxidoreductase). Complex I genes are upregulated at the time of symptom onset and upregulation persists into late stage disease; yet, functional assembly of complex I macromolecules are diminished and oxygen respiration through complex I is reduced. Acute treatment of postsymptomatic SCA1 mice with succinic acid, a complex II (succinate dehydrogenase) electron donor to bypass complex I dysfunction, ameliorated cerebellar OXPHOS dysfunction, reduced cerebellar pathology and improved motor behavior. Thus, exploration of mitochondrial dysfunction and its role in neurodegenerative ataxias, and warrants further investigation.
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71
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Iftikhar S, Shahid AA, Halim SA, Wolters PJ, Vleeshouwers VGAA, Khan A, Al-Harrasi A, Ahmad S. Discovering Novel Alternaria solani Succinate Dehydrogenase Inhibitors by in Silico Modeling and Virtual Screening Strategies to Combat Early Blight. Front Chem 2017; 5:100. [PMID: 29204422 PMCID: PMC5698277 DOI: 10.3389/fchem.2017.00100] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/30/2017] [Indexed: 01/09/2023] Open
Abstract
Alternaria blight is an important foliage disease caused by Alternaria solani. The enzyme Succinate dehydrogenase (SDH) is a potential drug target because of its role in tricarboxylic acid cycle. Hence targeting Alternaria solani SDH enzyme could be efficient tool to design novel fungicides against A. solani. We employed computational methodologies to design new SDH inhibitors using homology modeling; pharmacophore modeling and structure based virtual screening. The three dimensional SDH model showed good stereo-chemical and structural properties. Based on virtual screening results twelve commercially available compounds were purchased and tested in vitro and in vivo. The compounds were found to inhibit mycelial growth of A. solani. Moreover in vitro trials showed that inhibitory effects were enhanced with increase in concentrations. Similarly increased disease control was observed in pre-treated potato tubers. Hence the applied in silico strategy led us to identify novel fungicides.
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Affiliation(s)
- Sehrish Iftikhar
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Ahmad A. Shahid
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Sobia A. Halim
- Department of Biochemistry, Kinnaird College for Women, Lahore, Pakistan
| | - Pieter J. Wolters
- Plant Breeding, Wageningen University and Research, Wageningen, Netherlands
| | | | - Ajmal Khan
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Pakistan
- UoN Chair of Oman Medicinal Plants and Marine Products, University of Nizwa, Nizwa, Oman
| | - Ahmed Al-Harrasi
- UoN Chair of Oman Medicinal Plants and Marine Products, University of Nizwa, Nizwa, Oman
| | - Shahbaz Ahmad
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
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Fang SB, Huang CJ, Huang CH, Wang KC, Chang NW, Pan HY, Fang HW, Huang MT, Chen CK. speG Is Required for Intracellular Replication of Salmonella in Various Human Cells and Affects Its Polyamine Metabolism and Global Transcriptomes. Front Microbiol 2017; 8:2245. [PMID: 29187844 PMCID: PMC5694781 DOI: 10.3389/fmicb.2017.02245] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 10/31/2017] [Indexed: 11/13/2022] Open
Abstract
The speG gene has been reported to regulate polyamine metabolism in Escherichia coli and Shigella, but its role in Salmonella remains unknown. Our preliminary studies have revealed that speG widely affects the transcriptomes of infected in vitro M and Caco-2 cells and that it is required for the intracellular replication of Salmonella enterica serovar Typhimurium (S. Typhimurium) in HeLa cells. In this study, we demonstrated that speG plays a time-dependent and cell type-independent role in the intracellular replication of S. Typhimurium. Moreover, high-performance liquid chromatography (HPLC) of four major polyamines demonstrated putrescine, spermine, and cadaverine as the leading polyamines in S. Typhimurium. The deletion of speG significantly increased the levels of the three polyamines in intracellular S. Typhimurium, suggesting the inhibitory effect of speG on the biosynthesis of these polyamines. The deletion of speG was associated with elevated levels of these polyamines in the attenuated intracellular replication of S. Typhimurium in host cells. This result was subsequently validated by the dose-dependent suppression of intracellular proliferation after the addition of the polyamines. Furthermore, our RNA transcriptome analysis of S. Typhimurium SL1344 and its speG mutant outside and inside Caco-2 cells revealed that speG regulates the genes associated with flagellar biosynthesis, fimbrial expression, and functions of types III and I secretion systems. speG also affects the expression of genes that have been rarely reported to correlate with polyamine metabolism in Salmonella, including those associated with the periplasmic nitrate reductase system, glucarate metabolism, the phosphotransferase system, cytochromes, and the succinate reductase complex in S. Typhimurium in the mid-log growth phase, as well as those in the ilv-leu and histidine biosynthesis operons of intracellular S. Typhimurium after invasion in Caco-2 cells. In the present study, we characterized the phenotypes and transcriptome effects of speG in S. Typhimurium and reviewed the relevant literature to facilitate a more comprehensive understanding of the potential role of speG in the polyamine metabolism and virulence regulation of Salmonella.
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Affiliation(s)
- Shiuh-Bin Fang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Ching-Jou Huang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Hung Huang
- Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan.,Graduate Institution of Engineering Technology-Doctoral, National Taipei University of Technology, Taipei, Taiwan
| | - Ke-Chuan Wang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nai-Wen Chang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Hung-Yin Pan
- Graduate Institution of Engineering Technology-Doctoral, National Taipei University of Technology, Taipei, Taiwan
| | - Hsu-Wei Fang
- Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
| | - Ming-Te Huang
- Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ching-Kuo Chen
- Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan
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Zinc enhances the cellular energy supply to improve cell motility and restore impaired energetic metabolism in a toxic environment induced by OTA. Sci Rep 2017; 7:14669. [PMID: 29116164 PMCID: PMC5676743 DOI: 10.1038/s41598-017-14868-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 10/12/2017] [Indexed: 02/08/2023] Open
Abstract
Exogenous nutrient elements modulate the energetic metabolism responses that are prerequisites for cellular homeostasis and metabolic physiology. Although zinc is important in oxidative stress and cytoprotection processes, its role in the regulation of energetic metabolism remains largely unknown. In this study, we found that zinc stimulated aspect in cell motility and was essential in restoring the Ochratoxin A (OTA)-induced energetic metabolism damage in HEK293 cells. Moreover, using zinc supplementation and zinc deficiency models, we observed that zinc is conducive to mitochondrial pyruvate transport, oxidative phosphorylation, carbohydrate metabolism, lipid metabolism and ultimate energy metabolism in both normal and toxic-induced oxidative stress conditions in vitro, and it plays an important role in restoring impaired energetic metabolism. This zinc-mediated energetic metabolism regulation could also be helpful for DNA maintenance, cytoprotection and hereditary cancer traceability. Therefore, zinc can widely adjust energetic metabolism and is essential in restoring the impaired energetic metabolism of cellular physiology.
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74
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Ke W, Lin X, Yu Z, Sun Q, Zhang Q. Molluscicidal activity and physiological toxicity of Macleaya cordata alkaloids components on snail Oncomelania hupensis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 143:111-115. [PMID: 29183578 DOI: 10.1016/j.pestbp.2017.08.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/17/2017] [Accepted: 08/27/2017] [Indexed: 05/24/2023]
Abstract
In order to search new local plant molluscicides for the control of the vectors of schistosomiasis, leaves of Macleaya cordata (Willd) R. Br. were used to extract and separate alkaloid components by thinner acid method and column chromatography, and the molluscicidal effect of alkaloid components against snail Oncomelania hupensis was determined by bioassay. The results showed that 7 alkaloid components (AN1-7) were obtained after extracting and separating alkaloids from the leaves of M. cordata, where AN2 was found being the most toxic against snail O. hupensis with 48h LC50 and LC90 values of AN2 of 6.35mg/L and 121.23mg/L, respectively. Responses of some critical enzymes to AN2, including activities of Alkaline phosphatase (ALP), Alanine aminotransferase (ALT), Aspartate transaminase (AST), Malic dehydrogenase (MDH) and Succinate dehydrogenase (SDH) in both cephalopodium and liver, were also detected through experiments, which also explored esterase isozyme (EST) exposed to AN2 in liver tissue. The results showed that AN2 significantly inhibited the activities of SDH, MDH and esterase isozyme, as AN2 significantly stimulated the activities of ALP, ALT and AST to increase at a low concentration (e.g. 25mg/L), while significantly inhibited the activities of these enzymes at a high concentration (100mg/L). These results indicated that AN2 not only inhibited protein synthesis, and respiratory chain oxidative phosphorylation, but also caused hepatocellular injury and reduced the detoxification ability of liver.
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Affiliation(s)
- Wenshan Ke
- School of Life Science, Hubei University, Wuhan 430062, PR China.
| | - Xiong Lin
- School of Life Science, Hubei University, Wuhan 430062, PR China
| | - Zhengshen Yu
- School of Life Science, Hubei University, Wuhan 430062, PR China
| | - Qiqiang Sun
- Research Institute of Forestry Chinese Academy of Forestry, Beijing 100086, PR China
| | - Qian Zhang
- Research Institute of Forestry Chinese Academy of Forestry, Beijing 100086, PR China
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75
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Moghaddam MRB, Gross T, Becker A, Vilcinskas A, Rahnamaeian M. The selective antifungal activity of Drosophila melanogaster metchnikowin reflects the species-dependent inhibition of succinate-coenzyme Q reductase. Sci Rep 2017; 7:8192. [PMID: 28811531 PMCID: PMC5557811 DOI: 10.1038/s41598-017-08407-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 07/12/2017] [Indexed: 12/31/2022] Open
Abstract
Insect-derived antifungal peptides have a significant economic potential, particularly for the engineering of pathogen-resistant crops. However, the nonspecific antifungal activity of such peptides could result in detrimental effects against beneficial fungi, whose interactions with plants promote growth or increase resistance against biotic and abiotic stress. The antifungal peptide metchnikowin (Mtk) from Drosophila melanogaster acts selectively against pathogenic Ascomycota, including Fusarium graminearum, without affecting Basidiomycota such as the beneficial symbiont Piriformospora indica. Here we investigated the mechanism responsible for the selective antifungal activity of Mtk by using the peptide to probe a yeast two-hybrid library of F. graminearum cDNAs. We found that Mtk specifically targets the iron-sulfur subunit (SdhB) of succinate-coenzyme Q reductase (SQR). A functional assay based on the succinate dehydrogenase (SDH) activity of mitochondrial complex II clearly demonstrated that Mtk inhibited the SDH activity of F. graminearum mitochondrial SQR by up to 52%, but that the equivalent enzyme in P. indica was unaffected. A phylogenetic analysis of the SdhB family revealed a significant divergence between the Ascomycota and Basidiomycota. SQR is one of the key targets of antifungal agents and we therefore propose Mtk as an environmentally sustainable and more selective alternative to chemical fungicides.
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Affiliation(s)
- Mohammad-Reza Bolouri Moghaddam
- Institute for Insect Biotechnology, Justus Liebig University of Giessen, Heinrich-Buff-Ring 26-32, D-35392, Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Strasse 2, D-35394, Giessen, Germany
| | - Thomas Gross
- Institute of Botany, Justus Liebig University of Giessen, Heinrich-Buff-Ring 38, D-35392, Giessen, Germany
| | - Annette Becker
- Institute of Botany, Justus Liebig University of Giessen, Heinrich-Buff-Ring 38, D-35392, Giessen, Germany
| | - Andreas Vilcinskas
- Institute for Insect Biotechnology, Justus Liebig University of Giessen, Heinrich-Buff-Ring 26-32, D-35392, Giessen, Germany.
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Strasse 2, D-35394, Giessen, Germany.
| | - Mohammad Rahnamaeian
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Department of Bioresources, Winchester Strasse 2, D-35394, Giessen, Germany.
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76
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Dietary leucine supplementation alters energy metabolism and induces slow-to-fast transitions in longissimus dorsi muscle of weanling piglets. Br J Nutr 2017. [DOI: 10.1017/s0007114517001209] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
AbstractLeucine plays an important role in promoting muscle protein synthesis and muscle remodelling. However, what percentage of leucine is appropriate in creep feed and what proteome profile alterations are caused by dietary leucine in the skeletal muscle of piglets remain elusive. In this case, we applied isobaric tags for relative and absolute quantitation to analyse the proteome profile of the longissimus dorsi muscles of weanling piglets fed a normal leucine diet (NL; 1·66 % leucine) and a high-leucine diet (HL; 2·1 % leucine). We identified 157 differentially expressed proteins between these two groups. Bioinformatics analysis of these proteins exhibited the suppression of oxidative phosphorylation and fatty acid β-oxidation, as well as the activation of glycolysis, in the HL group. For further confirmation, we identified that SDHB, ATP5F1, ACADM and HADHB were significantly down-regulated (P<0·01, except ATP5F1, P<0·05), whereas the glycolytic enzyme pyruvate kinase was significantly up-regulated (P<0·05) in the HL group. We also show that enhanced muscle protein synthesis and the transition from slow-to-fast fibres are altered by leucine. Together, these results indicate that leucine may alter energy metabolism and promote slow-to-fast transitions in the skeletal muscle of weanling piglets.
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Planchon M, Léger T, Spalla O, Huber G, Ferrari R. Metabolomic and proteomic investigations of impacts of titanium dioxide nanoparticles on Escherichia coli. PLoS One 2017; 12:e0178437. [PMID: 28570583 PMCID: PMC5453534 DOI: 10.1371/journal.pone.0178437] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/13/2017] [Indexed: 11/18/2022] Open
Abstract
In a previous study, it was demonstrated that the toxic impact of titanium dioxide nanoparticles on Escherichia coli starts at 10 ppm and is closely related to the presence of little aggregates. It was also assumed that only a part of the bacterial population is able to adapt to this stress and attempts to survive. Proteomic analyses, supported by results from metabolomics, reveal that exposure of E. coli to nano-TiO2 induces two main effects on bacterial metabolism: firstly, the up-regulation of proteins and the increase of metabolites related to energy and growth metabolism; secondly, the down-regulation of other proteins resulting in an increase of metabolites, particularly amino acids. Some proteins, e.g. chaperonin 1 or isocitrate dehydrogenase, and some metabolites, e.g. phenylalanine or valine, might be used as biomarkers of nanoparticles stress. Astonishingly, the ATP content gradually rises in relation with the nano-TiO2 concentration in the medium, indicating a dramatic release of ATP by the damaged cells. These apparently contradictory results accredit the thesis of a heterogeneity of the bacterial population. This heterogeneity is also confirmed by SEM images which show that while some bacteria are fully covered by nano-TiO2, the major part of the bacterial population remains free from nanoparticles, resulting in a difference of proteome and metabolome. The use of combined-omics has allowed to better understand the heterogeneous bacterial response to nano-TiO2 stress due to heterogeneous contacts between the protagonists under environmental conditions.
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Affiliation(s)
- Mariane Planchon
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- Université Paris Diderot, Sorbonne Paris Cité, IPGP, UMR 7154, Paris Cedex 13 France
- iCEINT, International Consortium for the Environmental Implications of Nanotechnology
| | - Thibaut Léger
- Mass Spectrometry Laboratory, Institut Jacques Monod, UMR 7592, Univ Paris Diderot, CNRS, Sorbonne Paris Cité, Paris, France
| | - Olivier Spalla
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- iCEINT, International Consortium for the Environmental Implications of Nanotechnology
| | - Gaspard Huber
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- * E-mail: (GH); (RF)
| | - Roselyne Ferrari
- Université Paris Diderot, Sorbonne Paris Cité, IPGP, UMR 7154, Paris Cedex 13 France
- Université Paris Diderot, Sorbonne Paris Cité, LIED, UMR 8236, Paris, France
- * E-mail: (GH); (RF)
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78
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Yang X, Wang H, Li C, Lin CSK. Restoring of Glucose Metabolism of Engineered Yarrowia lipolytica for Succinic Acid Production via a Simple and Efficient Adaptive Evolution Strategy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4133-4139. [PMID: 28474529 DOI: 10.1021/acs.jafc.7b00519] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Succinate dehydrogenase inactivation in Yarrowia lipolytica has been demonstrated for robust succinic acid production, whereas the inefficient glucose metabolism has hindered its practical application. In this study, a simple and efficient adaptive evolution strategy via cell immobilization was conducted in shake flasks, with an aim to restore the glucose metabolism of Y. lipolytica mutant PGC01003. After 21 days with 14 generations evolution, glucose consumption rate increased to 0.30 g/L/h in YPD medium consisting of 150 g/L initial glucose concentration, while poor yeast growth was observed in the same medium using the initial strain without adaptive evolution. Succinic acid productivity of the evolved strain also increased by 2.3-fold, with stable cell growth in YPD medium with high initial glucose concentration. Batch fermentations resulted in final succinic acid concentrations of 65.7 g/L and 87.9 g/L succinic acid using YPD medium and food waste hydrolysate, respectively. The experimental results in this study show that a simple and efficient strategy could facilitate the glucose uptake rate in succinic acid fermentation using glucose-rich substrates.
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Affiliation(s)
- Xiaofeng Yang
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology , Guangzhou 510006, People's Republic of China
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
| | - Huaimin Wang
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
| | - Chong Li
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
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79
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Casey RT, Ascher DB, Rattenberry E, Izatt L, Andrews KA, Simpson HL, Challis B, Park S, Bulusu VR, Lalloo F, Pires DEV, West H, Clark GR, Smith PS, Whitworth J, Papathomas TG, Taniere P, Savisaar R, Hurst LD, Woodward ER, Maher ER. SDHA related tumorigenesis: a new case series and literature review for variant interpretation and pathogenicity. Mol Genet Genomic Med 2017; 5:237-250. [PMID: 28546994 PMCID: PMC5441402 DOI: 10.1002/mgg3.279] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/06/2017] [Accepted: 01/13/2017] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To evaluate the role of germline SDHA mutation analysis by (1) comprehensive literature review, (2) description of novel germline SDHA mutations and (3) in silico structural prediction analysis of missense substitutions in SDHA. PATIENTS AND METHODS A systematic literature review and a retrospective review of the molecular and clinical features of patients identified with putative germline variants in UK molecular genetic laboratories was performed. To evaluate the molecular consequences of SDHA missense variants, a novel model of the SDHA/B/C/D complex was generated and the structural effects of missense substitutions identified in the literature, our UK novel cohort and a further 32 "control missense variants" were predicted by the mCSM computational platform. These structural predictions were correlated with the results of tumor studies and other bioinformatic predictions. RESULTS Literature review revealed reports of 17 different germline SDHA variants in 47 affected individuals from 45 kindreds. A further 10 different variants in 15 previously unreported cases (seven novel variants in eight patients) were added from our UK series. In silico structural prediction studies of 11 candidate missense germline mutations suggested that most (63.7%) would destabilize the SDHA protomer, and that most (78.1%) rare SDHA missense variants present in a control data set (ESP6500) were also associated with impaired protein stability. CONCLUSION The clinical spectrum of SDHA-associated neoplasia differs from that of germline mutations in other SDH-subunits. The interpretation of the significance of novel SDHA missense substitutions is challenging. We recommend that multiple investigations (e.g. tumor studies, metabolomic profiling) should be performed to aid classification of rare missense variants before genetic testing results are used to influence clinical management.
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Affiliation(s)
- Ruth T. Casey
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
- Department of EndocrinologyUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreAddenbrooke's HospitalCambridgeCB2 2QQUK
| | - David B. Ascher
- Department of BiochemistryUniversity of CambridgeSanger Building, 80 Tennis Court RoadCambridgeCB2 1GAUK
- Department of BiochemistryBio21 InstituteUniversity of MelbourneMelbourneVictoria3010Australia
| | - Eleanor Rattenberry
- West Midlands Region Genetics ServiceBirmingham Women's HospitalBirminghamUK
| | - Louise Izatt
- Department of Medical GeneticsGuy's HospitalLondonUK
| | - Katrina A. Andrews
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | - Helen L. Simpson
- Department of EndocrinologyUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreAddenbrooke's HospitalCambridgeCB2 2QQUK
| | - Benjamen Challis
- Department of EndocrinologyUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreAddenbrooke's HospitalCambridgeCB2 2QQUK
| | - Soo‐Mi Park
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | | | - Fiona Lalloo
- Manchester Centre for Genomic MedicineSt Mary's HospitalCentral Manchester University Hospitals NHS Foundation TrustManchester Academic Health Science CentreManchesterUK
| | - Douglas E. V. Pires
- Centro de Pesquisas René RachouFundação Oswaldo CruzBelo Horizonte30190‐002Brazil
| | - Hannah West
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | - Graeme R. Clark
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | - Philip S. Smith
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | - James Whitworth
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
| | | | - Phillipe Taniere
- Histopathology and Cellular PathologyUniversity Hospitals Birmingham NHS Foundation TrustQueen Elizabeth HospitalBirminghamUK
| | - Rosina Savisaar
- The Milner Centre for EvolutionDepartment of Biology and BiochemistryUniversity of BathBathBA2 7AYUK
| | - Laurence D. Hurst
- The Milner Centre for EvolutionDepartment of Biology and BiochemistryUniversity of BathBathBA2 7AYUK
| | - Emma R. Woodward
- West Midlands Region Genetics ServiceBirmingham Women's HospitalBirminghamUK
- Manchester Centre for Genomic MedicineSt Mary's HospitalCentral Manchester University Hospitals NHS Foundation TrustManchester Academic Health Science CentreManchesterUK
| | - Eamonn R. Maher
- Department of Medical GeneticsUniversity of Cambridge and NIHR Cambridge Biomedical Research CentreCambridgeCB2 2QQUK
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Siddiqui S, Kadlecek S, Pourfathi M, Xin Y, Mannherz W, Hamedani H, Drachman N, Ruppert K, Clapp J, Rizi R. The use of hyperpolarized carbon-13 magnetic resonance for molecular imaging. Adv Drug Deliv Rev 2017; 113:3-23. [PMID: 27599979 PMCID: PMC5783573 DOI: 10.1016/j.addr.2016.08.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/25/2016] [Accepted: 08/27/2016] [Indexed: 02/06/2023]
Abstract
Until recently, molecular imaging using magnetic resonance (MR) has been limited by the modality's low sensitivity, especially with non-proton nuclei. The advent of hyperpolarized (HP) MR overcomes this limitation by substantially enhancing the signal of certain biologically important probes through a process known as external nuclear polarization, enabling real-time assessment of tissue function and metabolism. The metabolic information obtained by HP MR imaging holds significant promise in the clinic, where it could play a critical role in disease diagnosis and therapeutic monitoring. This review will provide a comprehensive overview of the developments made in the field of hyperpolarized MR, including advancements in polarization techniques and delivery, probe development, pulse sequence optimization, characterization of healthy and diseased tissues, and the steps made towards clinical translation.
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Affiliation(s)
- Sarmad Siddiqui
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Stephen Kadlecek
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mehrdad Pourfathi
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yi Xin
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - William Mannherz
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Hooman Hamedani
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nicholas Drachman
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kai Ruppert
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Justin Clapp
- Department of Anesthesiology and Critical Care, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rahim Rizi
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA.
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81
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Li X, Liu Y, Jia Q, LaMacchia V, O’Donoghue K, Huang Z. A systems biology approach to investigate the antimicrobial activity of oleuropein. ACTA ACUST UNITED AC 2016; 43:1705-1717. [DOI: 10.1007/s10295-016-1841-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/23/2016] [Indexed: 11/27/2022]
Abstract
Abstract
Oleuropein and its hydrolysis products are olive phenolic compounds that have antimicrobial effects on a variety of pathogens, with the potential to be utilized in food and pharmaceutical products. While the existing research is mainly focused on individual genes or enzymes that are regulated by oleuropein for antimicrobial activities, little work has been done to integrate intracellular genes, enzymes and metabolic reactions for a systematic investigation of antimicrobial mechanism of oleuropein. In this study, the first genome-scale modeling method was developed to predict the system-level changes of intracellular metabolism triggered by oleuropein in Staphylococcus aureus, a common food-borne pathogen. To simulate the antimicrobial effect, an existing S. aureus genome-scale metabolic model was extended by adding the missing nitric oxide reactions, and exchange rates of potassium, phosphate and glutamate were adjusted in the model as suggested by previous research to mimic the stress imposed by oleuropein on S. aureus. The developed modeling approach was able to match S. aureus growth rates with experimental data for five oleuropein concentrations. The reactions with large flux change were identified and the enzymes of fifteen of these reactions were validated by existing research for their important roles in oleuropein metabolism. When compared with experimental data, the up/down gene regulations of 80% of these enzymes were correctly predicted by our modeling approach. This study indicates that the genome-scale modeling approach provides a promising avenue for revealing the intracellular metabolism of oleuropein antimicrobial properties.
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Affiliation(s)
- Xianhua Li
- grid.267871.d Department of Chemical Engineering Villanova University Villanova PA USA
| | - Yanhong Liu
- grid.417548.b 0000000404786311 Molecular Characterization of Foodborne Pathogens, Eastern Regional Research Center, Agricultural Research Service U.S. Department of Agriculture 600 East Mermaid Lane 19038 Wyndmoor PA USA
| | - Qian Jia
- grid.262671.6 0000000088284546 Department of Health and Exercise Science Rowan University Glassboro NJ USA
| | - Virginia LaMacchia
- grid.267871.d Department of Chemical Engineering Villanova University Villanova PA USA
| | - Kathryn O’Donoghue
- grid.267871.d Department of Chemical Engineering Villanova University Villanova PA USA
| | - Zuyi Huang
- grid.267871.d Department of Chemical Engineering Villanova University Villanova PA USA
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82
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Khan S, Beigh S, Chaudhari BP, Sharma S, Aliul Hasan Abdi S, Ahmad S, Ahmad F, Parvez S, Raisuddin S. Mitochondrial dysfunction induced by Bisphenol A is a factor of its hepatotoxicity in rats. ENVIRONMENTAL TOXICOLOGY 2016; 31:1922-1934. [PMID: 26450347 DOI: 10.1002/tox.22193] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 08/24/2015] [Accepted: 08/29/2015] [Indexed: 06/05/2023]
Abstract
Bisphenol A (BPA), an estrogenic and endocrine disrupting agent, is widely used in manufacturing of polycarbonate plastics and epoxy resins. BPA and other endocrine disrupting chemicals (EDCs) act via multiple mechanisms including interference with mitochondrial functions. Mitochondria are the hub of cellular energy pool and hence are the target of many EDCs. We studied perturbation of activities of mitochondrial enzymes by BPA and its possible role in hepatotoxicity in Wistar rats. Rats were exposed to BPA (150 mg/kg, 250 mg/kg, 500 mg/kg per os, for 14 days) and activities of enzymes of mitochondrial electron transport chain (ETC) were measured. Besides, other biochemical parameters such as superoxide generation, protein oxidation, and lipid peroxidation (LPO) were also measured. Our results indicated a significant decrease in the activities of enzymes of mitochondrial ETC complexes, i.e., complex I, II, III, IV, and V along with significant increase in LPO and protein oxidation. Additionally, a significant increase in mitochondrial superoxide generation was also observed. All these findings could be attributed to enhanced oxidative stress, decrease in reduced glutathione level, and decrease in the activity of superoxide dismutase in rat liver mitochondria isolated from BPA-treated rats. BPA treatment also caused a significant increase in serum alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and lactate dehydrogenase indicating its potential hepatotoxicity. Furthermore, histopathological findings revealed marked edema formation, hepatocellular degeneration, and necrosis of liver tissue in BPA-exposed rats. In conclusion, this study provides an evidence of impaired mitochondrial bioenergetics and liver toxicity after high-dose BPA exposure in rats. © 2015 Wiley Periodicals, Inc. Environ Toxicol 31: 1922-1934, 2016.
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Affiliation(s)
- Somaira Khan
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Saba Beigh
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Bhushan P Chaudhari
- Central Pathology Laboratory, CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, India
| | - Shikha Sharma
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Sayed Aliul Hasan Abdi
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Shahzad Ahmad
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Firoz Ahmad
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Suhel Parvez
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Sheikh Raisuddin
- Department of Medical Elementology & Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
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83
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Analysis of transcriptional profiles of Saccharomyces cerevisiae exposed to bisphenol A. Curr Genet 2016; 63:253-274. [DOI: 10.1007/s00294-016-0633-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/14/2016] [Accepted: 07/16/2016] [Indexed: 01/06/2023]
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84
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Más-Montoya M, Curiel D, Ramírez de Arellano C, Tárraga A, Molina P. Preorganized Fluorescent Receptor for the Preferential Binding of the Glutarate Anion. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600521] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Miriam Más-Montoya
- Faculty of Chemistry; University of Murcia; Campus of Espinardo 30100 Murcia Spain
| | - David Curiel
- Faculty of Chemistry; University of Murcia; Campus of Espinardo 30100 Murcia Spain
| | - Carmen Ramírez de Arellano
- Department of Organic Chemistry; Faculty of Pharmacy; University of Valencia; c/ Vicente Andres Estelles s/n 46100 Burjasot Valencia Spain
| | - Alberto Tárraga
- Faculty of Chemistry; University of Murcia; Campus of Espinardo 30100 Murcia Spain
| | - Pedro Molina
- Faculty of Chemistry; University of Murcia; Campus of Espinardo 30100 Murcia Spain
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85
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Fang B, Zhang M, Ren FZ, Zhou XD. Lifelong diet including common unsaturated fatty acids extends the lifespan and affects oxidation in
Caenorhabditis elegans
consistently with hormesis model. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201500237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bing Fang
- Academy of State Administration of GrainBeijingP. R. China
- Beijing Laboratory for Food Quality and SafetyChina Agricultural UniversityBeijingP. R. China
| | - Ming Zhang
- School of Food Science and Chemical EngineeringBeijing Technology and Business UniversityBeijingP. R. China
| | - Fa Zheng Ren
- Beijing Laboratory for Food Quality and SafetyChina Agricultural UniversityBeijingP. R. China
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijingP. R. China
| | - Xiao Dan Zhou
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijingP. R. China
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86
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Gao C, Yang X, Wang H, Rivero CP, Li C, Cui Z, Qi Q, Lin CSK. Robust succinic acid production from crude glycerol using engineered Yarrowia lipolytica. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:179. [PMID: 27579143 PMCID: PMC5004273 DOI: 10.1186/s13068-016-0597-8] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 08/19/2016] [Indexed: 05/02/2023]
Abstract
BACKGROUND Integrating waste management with fuels and chemical production is considered to address the food waste problem and oil crisis. Approximately, 600 million tonnes crude glycerol is produced from the biodiesel industry annually, which is a top renewable feedstock for succinic acid production. To meet the increasing demand for succinic acid production, the development of more efficient and cost-effective production methods is urgently needed. Herein, we have proposed a new strategy for integration of both biodiesel and SA production in a biorefinery unit by construction of an aerobic yeast Yarrowia lipolytica with a deletion in the gene coding succinate dehydrogenase subunit 5. RESULTS Robust succinic acid production by an engineered yeast Y. lipolytica from crude glycerol without pre-treatment was demonstrated. Diversion of metabolic flow from tricarboxylic acid cycle led to the success in generating a succinic acid producer Y. lipolytica PGC01003. The fermentation media and conditions were optimized, which resulted in 43 g L(-1) succinic acid production from crude glycerol. Using the fed-batch strategy in 2.5 L fermenter, up to 160 g L(-1) SA was yielded, indicating the great industrial potential. CONCLUSIONS Inactivation of SDH5 in Y. lipolytica Po1f led to succinic acid accumulation and secretion significantly. To our best knowledge, this is the highest titer obtained in fermentation on succinic acid production. In addition, the performance of batch and fed-batch fermentation showed high tolerance and yield on biodiesel by-product crude glycerol. All these results indicated that PGC01003 is a promising microbial factorial cell for the highly efficient strategy solving the environmental problem in connection with the production of value-added product.
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Affiliation(s)
- Cuijuan Gao
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100 People’s Republic of China
- School of Life Science, Linyi University, Linyi, 276005 People’s Republic of China
| | - Xiaofeng Yang
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006 People’s Republic of China
| | - Huaimin Wang
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Cristina Perez Rivero
- School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester, UK
| | - Chong Li
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Zhiyong Cui
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100 People’s Republic of China
| | - Qingsheng Qi
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100 People’s Republic of China
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
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87
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Activity of Krebs cycle enzymes in mdx
mice. Muscle Nerve 2015; 53:91-5. [DOI: 10.1002/mus.24704] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 04/30/2015] [Accepted: 05/07/2015] [Indexed: 11/07/2022]
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88
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de Sousa RT, Streck EL, Forlenza OV, Brunoni AR, Zanetti MV, Ferreira GK, Diniz BS, Portela LV, Carvalho AF, Zarate CA, Gattaz WF, Machado-Vieira R. Regulation of leukocyte tricarboxylic acid cycle in drug-naïve Bipolar Disorder. Neurosci Lett 2015; 605:65-8. [PMID: 26297865 DOI: 10.1016/j.neulet.2015.08.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/02/2015] [Accepted: 08/13/2015] [Indexed: 11/30/2022]
Abstract
Several lines of evidence suggest a role for mitochondrial dysfunction in the pathophysiology of bipolar disorder (BD). The tricarboxylic acid cycle (TCA cycle) is fundamental for mitochondrial energy production and produces substrates used in oxidative phosphorylation by the mitochondrial electron transport chain. The activity of the key TCA cycle enzymes citrate synthase, malate dehydrogenase, and succinate dehydrogenase has never been evaluated in BD. In the present study, these enzymes were assayed from leukocytes of drug-naïve BD patients in a major depressive episode (n=18) and compared to 24 age-matched healthy controls. Drug-naïve BD patients did not show differences in activities of citrate synthase (p=0.79), malate dehydrogenase (p=0.17), and succinate dehydrogenase (p=0.35) compared with healthy controls. No correlation between any TCA cycle enzyme activity and severity of depressive symptoms was observed. Overall, these data suggest that the activities of the TCA cycle enzymes are not altered in major depressive episodes of recent-onset BD, which may support the concept of illness staging and neuroprogression in BD.
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Affiliation(s)
- Rafael T de Sousa
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Experimental Therapeutics and Pathophysiology Branch (ETPB), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - Emilio L Streck
- Laboratory of Bioenergetics, Programa de Pós-graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - Orestes V Forlenza
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Andre R Brunoni
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Marcus V Zanetti
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of Sao Paulo, Brazil; Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil
| | - Gabriela K Ferreira
- Laboratory of Bioenergetics, Programa de Pós-graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
| | - Breno S Diniz
- Departament of Mental Health, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil; National Institute of Science and Technology-Molecular Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Luis V Portela
- Department of Biochemistry, Post-Graduation Program in Biochemistry, ICBS, Federal University of Rio Grande do Sul (UFRGS), Rio Grande do Sul, Porto Alegre, Brazil
| | - André F Carvalho
- Translational Psychiatry Research Group and Department of Clinical Medicine, Faculty of Medicine, Federal University of Ceará, Brazil
| | - Carlos A Zarate
- Experimental Therapeutics and Pathophysiology Branch (ETPB), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - Wagner F Gattaz
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil
| | - Rodrigo Machado-Vieira
- Laboratory of Neuroscience, LIM-27, Institute and Department of Psychiatry, University of Sao Paulo, Brazil; Laboratory of Psychiatric Neuroimaging, LIM-21, Department and Institute of Psychiatry, University of Sao Paulo, Brazil.
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89
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Chalcone scaffolds as anti-infective agents: structural and molecular target perspectives. Eur J Med Chem 2015; 101:496-524. [PMID: 26188621 DOI: 10.1016/j.ejmech.2015.06.052] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/27/2015] [Accepted: 06/28/2015] [Indexed: 12/11/2022]
Abstract
In recent years, widespread outbreak of numerous infectious diseases across the globe has created havoc among the population. Particularly, the inhabitants of tropical and sub-tropical regions are mainly affected by these pathogens. Several natural and (semi) synthetic chalcones deserve the credit of being potential anti-infective candidates that inhibit various parasitic, malarial, bacterial, viral, and fungal targets like cruzain-1/2, trypanopain-Tb, trans-sialidase, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), fumarate reductase, falcipain-1/2, β-hematin, topoisomerase-II, plasmepsin-II, lactate dehydrogenase, protein kinases (Pfmrk and PfPK5), and sorbitol-induced hemolysis, DEN-1 NS3, H1N1, HIV (Integrase/Protease), protein tyrosine phosphatase A/B (Ptp-A/B), FtsZ, FAS-II, lactate/isocitrate dehydrogenase, NorA efflux pump, DNA gyrase, fatty acid synthase, chitin synthase, and β-(1,3)-glucan synthase. In this review, a comprehensive study (from Jan. 1982 to May 2015) of the structural features of anti-infective chalcones, their mechanism of actions (MOAs) and structure activity relationships (SARs) have been highlighted. With the knowledge of molecular targets, structural insights and SARs, this review may be helpful for (medicinal) chemists to design more potent, safe, selective and cost effective anti-infective agents.
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90
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Xekouki P, Szarek E, Bullova P, Giubellino A, Quezado M, Mastroyannis SA, Mastorakos P, Wassif CA, Raygada M, Rentia N, Dye L, Cougnoux A, Koziol D, Sierra MDLL, Lyssikatos C, Belyavskaya E, Malchoff C, Moline J, Eng C, Maher LJ, Pacak K, Lodish M, Stratakis CA. Pituitary adenoma with paraganglioma/pheochromocytoma (3PAs) and succinate dehydrogenase defects in humans and mice. J Clin Endocrinol Metab 2015; 100:E710-9. [PMID: 25695889 PMCID: PMC4422891 DOI: 10.1210/jc.2014-4297] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
CONTEXT Germline mutations in genes coding succinate dehydrogenase (SDH) subunits A, B, C, and D have been identified in familial paragangliomas (PGLs)/pheochromocytomas (PHEOs) and other tumors. We described a GH-secreting pituitary adenoma (PA) caused by SDHD mutation in a patient with familial PGLs. Additional patients with PAs and SDHx defects have since been reported. DESIGN We studied 168 patients with unselected sporadic PA and with the association of PAs, PGLs, and/or pheochromocytomas, a condition we named the 3P association (3PAs) for SDHx germline mutations. We also studied the pituitary gland and hormonal profile of Sdhb(+/-) mice and their wild-type littermates at different ages. RESULTS No SDHx mutations were detected among sporadic PA, whereas three of four familial cases were positive for a mutation (75%). Most of the SDHx-deficient PAs were either prolactinomas or somatotropinomas. Pituitaries of Sdhb(+/-) mice older than 12 months had an increased number mainly of prolactin-secreting cells and several ultrastructural abnormalities such as intranuclear inclusions, altered chromatin nuclear pattern, and abnormal mitochondria. Igf-1 levels of mutant mice tended to be higher across age groups, whereas Prl and Gh levels varied according to age and sex. CONCLUSION The present study confirms the existence of a new association that we termed 3PAs. It is due mostly to germline SDHx defects, although sporadic cases of 3PAs without SDHx defects also exist. Using Sdhb(+/-) mice, we provide evidence that pituitary hyperplasia in SDHx-deficient cells may be the initial abnormality in the cascade of events leading to PA formation.
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Affiliation(s)
- Paraskevi Xekouki
- Section on Endocrinology and Genetics (P.X., E.S., S.A.M., P.M., M.R., N.R., M.d.L.L.S., C.L., E.B., M.L., C.A.S.), Program on Developmental Endocrinology and Genetics, Section on Medical Neuroendocrinology (P.B., A.G.), Program in Reproductive and Adult Endocrinology, Section on Molecular Dysmorphology (C.A.W., A.C.), Program in Developmental Endocrinology and Genetics, Microscopy and Imaging Core (L.D.), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Laboratory of Pathology (A.G., M.Q., K.P.), National Cancer Institute, and Biostatistics and Clinical Epidemiology Service (D.K.), Clinical Center, National Institutes of Health, Bethesda, Maryland 20892; Department of Endocrinology (C.M.), University of Connecticut Health Center, Farmington, Connecticut 06030; Genomic Medicine Institute (J.M., C.E.), Cleveland Clinic, Cleveland, Ohio 44195; Department of Biochemistry and Molecular Biology (L.J.M.), Mayo Clinic College of Medicine, Rochester, Minnesota 55905; and Department of Molecular Medicine (P.B.), Institute of Virology, Slovak Academy of Sciences, 833 06 Bratislava, Slovakia
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91
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Cooperation of protein machineries in mitochondrial protein sorting. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:1119-29. [DOI: 10.1016/j.bbamcr.2015.01.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/16/2015] [Accepted: 01/20/2015] [Indexed: 02/07/2023]
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92
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Yan W, Ji X, Shi J, Li G, Sang N. Acute nitrogen dioxide inhalation induces mitochondrial dysfunction in rat brain. ENVIRONMENTAL RESEARCH 2015; 138:416-424. [PMID: 25791864 DOI: 10.1016/j.envres.2015.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/13/2015] [Accepted: 02/21/2015] [Indexed: 06/04/2023]
Abstract
Recent epidemiological literatures imply that NO2 is a potential risk factor of neurological disorders. Whereas, the pathogenesis of various neurological diseases has been confirmed correlate to mitochondrial dysfunction, and mitochondria play the crucial roles in energy metabolism, free radicals production and apoptosis triggering in response to neuronal injury. Therefore, to clarify the possible mechanisms for NO2-induced neurotoxicity, in the present study, we investigated the possible effects of acute NO2 inhalation (5, 10 and 20mg/m(3) with 5h/day for 7 days) on energy metabolism and biogenesis in rat cortex, mainly including mitochondrial ultrastructure, mitochondrial membrane potential, cytochrome c oxidase activity, cytochrome c oxidase (CO) and ATP synthase subunits, ATP content, and transcription factors. The results showed that NO2 exposure induced mitochondrial morphological changes in rat cortex, and the alteration was coupled with the abnormality of mitochondrial energy metabolism, including decreased respiratory complexes, reduced ATP production and increased production of ROS. Also, increased ROS in turn caused mitochondrial membrane damage, energy production defect and mitochondrial biogenesis inhibition. It suggests the significantly damaged mitochondrial energy metabolism and impaired biogenesis in rat brain after NO2 exposure, and provides a new understanding of the pathophysiological mechanisms of NO2-induced neurological disorders.
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Affiliation(s)
- Wei Yan
- College of Environment and Resource, Research Center of Environment and Health, Institute of Environmental Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Xiaotong Ji
- College of Environment and Resource, Research Center of Environment and Health, Institute of Environmental Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Jing Shi
- College of Environment and Resource, Research Center of Environment and Health, Institute of Environmental Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Guangke Li
- College of Environment and Resource, Research Center of Environment and Health, Institute of Environmental Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Institute of Environmental Science, Shanxi University, Taiyuan, Shanxi 030006, PR China.
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93
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Nalika N, Parvez S. Mitochondrial dysfunction in titanium dioxide nanoparticle-induced neurotoxicity. Toxicol Mech Methods 2015; 25:355-63. [DOI: 10.3109/15376516.2015.1020183] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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94
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Wei D, Jia FX, Tian CB, Tian Y, Smagghe G, Dou W, Wang JJ. Comparative proteomic analysis of Bactrocera dorsalis (Hendel) in response to thermal stress. JOURNAL OF INSECT PHYSIOLOGY 2015; 74:16-24. [PMID: 25660066 DOI: 10.1016/j.jinsphys.2015.01.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 12/30/2014] [Accepted: 01/12/2015] [Indexed: 06/04/2023]
Abstract
Temperature is one of the most important environmental variables affecting growth, reproduction and distribution of insects. The rise of comparative proteomics provides a powerful tool to explore the response in proteins to thermal stress. As an important worldwide pest, the oriental fruit fly Bactrocera dorsalis causes severe economic losses to crops. To understand the response of B. dorsalis to thermal stress, we performed a comparative proteome analysis of this insect after exposure to extreme low and high temperatures using two-dimensional electrophoresis. Among the separated proteins, 51 diverse protein spots were present differently in response to extreme temperatures. Using tandem mass spectrometry sequencing analysis 39 proteins were successfully identified, which included 13 oxidoreductases, 10 binding proteins, 5 transferases, and 2 each of lyases, isomerases, ligases, and developmental proteins. Subsequently, the expression of these protein transcripts was studied by RT-qPCR to validate the proteomic results. In conclusion, this study provides a first look into the thermal stress response of B. dorsalis at the protein level, and thus it paves the way for further functional studies in the physiological mechanism related to thermal stress.
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Affiliation(s)
- Dong Wei
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Fu-Xian Jia
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Chuan-Bei Tian
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Yi Tian
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Guy Smagghe
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China; Department of Crop Protection, Ghent University, B-9000 Ghent, Belgium
| | - Wei Dou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China.
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95
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Khodabukus A, Baar K. Streptomycin Decreases the Functional Shift to a Slow Phenotype Induced by Electrical Stimulation in Engineered Muscle. Tissue Eng Part A 2015; 21:1003-12. [DOI: 10.1089/ten.tea.2014.0462] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Alastair Khodabukus
- Division of Neurobiology, Physiology and Behavior, University of California Davis, Davis, California
| | - Keith Baar
- Division of Neurobiology, Physiology and Behavior, University of California Davis, Davis, California
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96
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Santos MM, Marques I, Carvalho S, Moiteiro C, Félix V. Recognition of bio-relevant dicarboxylate anions by an azacalix[2]arene[2]triazine derivative decorated with urea moieties. Org Biomol Chem 2015; 13:3070-85. [DOI: 10.1039/c4ob02283a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The binding affinity of a dichlorocalix[2]arene[2]triazine based bis-urea azamacrocycle was investigated towards a wide range of bio-relevant dicarboxylate anions by a combination of 1H NMR titrations in CDCl3 and molecular dynamics simulations.
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Affiliation(s)
- Miguel M. Santos
- Departamento de Química
- iBiMED and CICECO
- Universidade de Aveiro
- 3810-193 Aveiro
- Portugal
| | - Igor Marques
- Departamento de Química
- iBiMED and CICECO
- Universidade de Aveiro
- 3810-193 Aveiro
- Portugal
| | - Sílvia Carvalho
- Departamento de Química
- iBiMED and CICECO
- Universidade de Aveiro
- 3810-193 Aveiro
- Portugal
| | - Cristina Moiteiro
- Centro de Química e Bioquímica
- DQB
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
| | - Vítor Félix
- Departamento de Química
- iBiMED and CICECO
- Universidade de Aveiro
- 3810-193 Aveiro
- Portugal
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97
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The influence of oxygen limitation for the production of succinic acid with recombinant strains of Yarrowia lipolytica. Appl Microbiol Biotechnol 2014; 99:1675-86. [DOI: 10.1007/s00253-014-6252-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 01/13/2023]
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Ononye SN, Shi W, Wali VB, Aktas B, Jiang T, Hatzis C, Pusztai L. Metabolic isoenzyme shifts in cancer as potential novel therapeutic targets. Breast Cancer Res Treat 2014; 148:477-88. [PMID: 25395317 DOI: 10.1007/s10549-014-3194-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 10/31/2014] [Indexed: 12/31/2022]
Abstract
The functional redundancy of metabolic enzyme expression may present a new strategy for developing targeted therapies in cancer. To satisfy the increased metabolic demand required during neoplastic transformations and proliferation, cancer cells may rely on additional isoforms of a metabolic enzyme to satisfy the increased demand for metabolic precursors, which could subsequently render cancer cells more vulnerable to isoform-specific inhibitors. In this review, we provide a survey of common isoenzyme shifts that have been reported to be important in cancer metabolism and link those to metabolic pathways that currently have drugs in various stages of development. This phenomenon suggests a potentially new therapeutic strategy for the treatment of cancer by identifying shifts in the expression of metabolic isoenzymes between cancer and normal cells. We also delineate other putative metabolic isoenzymes that could be targets for novel targeted therapies for cancer. Changes in isoenzyme expression that occur during neoplastic transformations or in response to environmental pressure in cancer cells may result in isoenzyme diversity that may subsequently render cancer cells more vulnerable to isoform-specific inhibitors due to reliance on a single isoform to perform a vital enzymatic function.
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Affiliation(s)
- S N Ononye
- Yale Cancer Center, Yale School of Medicine, New Haven, CT, 06511, USA,
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Wang ZJ, Gao Y, Hou YL, Zhang C, Yu SJ, Bian Q, Li ZM, Zhao WG. Design, synthesis, and fungicidal evaluation of a series of novel 5-methyl-1H-1,2,3-trizole-4-carboxyl amide and ester analogues. Eur J Med Chem 2014; 86:87-94. [DOI: 10.1016/j.ejmech.2014.08.029] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 10/24/2022]
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