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Hou X, Feng J, Franklin JL, Russo R, Guo Z, Zhou J, Gao JM, Liu HW, Wang B. Mechanistic Insights from the Crystal Structure and Computational Analysis of the Radical SAM Deaminase DesII. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403494. [PMID: 38943270 DOI: 10.1002/advs.202403494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/06/2024] [Indexed: 07/01/2024]
Abstract
Radical S-adenosyl-L-methionine (SAM) enzymes couple the reductive cleavage of SAM to radical-mediated transformations that have proven to be quite broad in scope. DesII is one such enzyme from the biosynthetic pathway of TDP-desosamine where it catalyzes a radical-mediated deamination. Previous studies have suggested that this reaction proceeds via direct elimination of ammonia from an α-hydroxyalkyl radical or its conjugate base (i.e., a ketyl radical) rather than 1,2-migration of the amino group to form a carbinolamine radical intermediate. However, without a crystal structure, the active site features responsible for this chemistry have remained largely unknown. The crystallographic studies described herein help to fill this gap by providing a structural description of the DesII active site. Computational analyses based on the solved crystal structure are consistent with direct elimination and indicate that an active site glutamate residue likely serves as a general base to promote deprotonation of the α-hydroxyalkyl radical intermediate and elimination of the ammonia group.
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Affiliation(s)
- Xueli Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jianqiang Feng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering and Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, 361005, China
| | - Joseph Livy Franklin
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ryan Russo
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, TX, 78712, USA
| | - Zhiyong Guo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Jiahai Zhou
- Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hung-Wen Liu
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, TX, 78712, USA
- Department of Chemistry, University of Texas at Austin, Austin, TX, 78712, USA
| | - Binju Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering and Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, 361005, China
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2
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Zhu Y, Tang Y, Huang L, Nguyen M, Liu Y, Robert A, Meunier B. The Specific Copper(II) Chelator TDMQ20 Is Efficient for the Treatment of Wilson's Disease in Mice. Pharmaceutics 2023; 15:2719. [PMID: 38140060 PMCID: PMC10747306 DOI: 10.3390/pharmaceutics15122719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: In patients with Wilson's disease, the deficiency of the copper carrier ATP7B causes the accumulation of copper in the liver, brain and various other organs. Lifelong treatment is therefore mandatory, using copper chelators to increase the excretion of copper and to avoid life-threatening damage. The clinically used reference drug, D-penicillamine, exhibit numerous adverse effects, especially a frequent severe and irreversible neurological worsening, mainly due to its lack of metal selectivity; (2) Methods: A new tetradentate ligand based on an 8-aminoquinoline entity, named TDMQ20, which is highly selective for copper compared with other metal ions, is evaluated in "toxic milk" TX mice as an oral treatment of this Wilson's disease murine model; (3) Results: The concentration of copper in the liver of "toxic milk" TX mice decreased and the fecal excretion of copper increased upon oral treatment with TDMQ20. Both effects are dose-dependent, and more pronounced than those of D-penicillamine; (4) Conclusions: The TDMQ20 copper chelator is more efficient than the reference drug D-penicillamine for the treatment of a Wilson's disease murine model. Pharmacological data obtained with TDMQ20 on the TX mouse model strongly support the selection of this ligand as a drug candidate for this genetic disease.
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Affiliation(s)
- Yingshan Zhu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), Higher Education Mega Center, Guangzhou 510006, China; (Y.Z.); (Y.T.); (L.H.)
| | - Ying Tang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), Higher Education Mega Center, Guangzhou 510006, China; (Y.Z.); (Y.T.); (L.H.)
| | - Lan Huang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), Higher Education Mega Center, Guangzhou 510006, China; (Y.Z.); (Y.T.); (L.H.)
| | - Michel Nguyen
- Laboratoire de Chimie de Coordination du CNRS, Inserm ERL 1289, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France; (M.N.); (A.R.)
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), Higher Education Mega Center, Guangzhou 510006, China; (Y.Z.); (Y.T.); (L.H.)
| | - Anne Robert
- Laboratoire de Chimie de Coordination du CNRS, Inserm ERL 1289, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France; (M.N.); (A.R.)
| | - Bernard Meunier
- School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), Higher Education Mega Center, Guangzhou 510006, China; (Y.Z.); (Y.T.); (L.H.)
- Laboratoire de Chimie de Coordination du CNRS, Inserm ERL 1289, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France; (M.N.); (A.R.)
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3
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Pereira A, Adekunle RD, Zaman M, Wan MJ. Association Between Vitamin Deficiencies and Ophthalmological Conditions. Clin Ophthalmol 2023; 17:2045-2062. [PMID: 37489231 PMCID: PMC10363387 DOI: 10.2147/opth.s401262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/12/2023] [Indexed: 07/26/2023] Open
Abstract
Vitamin deficiencies can have adverse effects on health, including on the visual system. The ocular manifestations of a vitamin deficiency are related to the underlying biochemical function of the particular nutrient. While vitamin deficiencies are not common in developed counties, they are still prevalent in parts of the developing world and in specific, vulnerable populations. Vitamin deficiencies can cause or contribute to many ophthalmological conditions and eye diseases may even be the first presenting finding of a vitamin deficiency. As such, it is important for ophthalmologists to be aware of the ocular manifestations of vitamin deficiencies, especially given that the complications can be severe and effectively treated if identified early. This review summarizes the literature on the main vitamins known to have characteristic ocular manifestations: vitamins A, B1, B2, B9, B12, C, D, E and K. The function, epidemiology, manifestations, workup, and management of each vitamin is discussed in detail.
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Affiliation(s)
- Austin Pereira
- University of Toronto Department of Ophthalmology & Vision Sciences, Toronto, Ontario, Canada
| | - R Damilola Adekunle
- Faculty of Medicine, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Michele Zaman
- Queen’s School of Medicine, Kingston, Ontario, Canada
| | - Michael J Wan
- University of Toronto Department of Ophthalmology & Vision Sciences, Toronto, Ontario, Canada
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4
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Marques HM. The inorganic chemistry of the cobalt corrinoids - an update. J Inorg Biochem 2023; 242:112154. [PMID: 36871417 DOI: 10.1016/j.jinorgbio.2023.112154] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
The inorganic chemistry of the cobalt corrinoids, derivatives of vitamin B12, is reviewed, with particular emphasis on equilibrium constants for, and kinetics of, their axial ligand substitution reactions. The role the corrin ligand plays in controlling and modifying the properties of the metal ion is emphasised. Other aspects of the chemistry of these compounds, including their structure, corrinoid complexes with metals other than cobalt, the redox chemistry of the cobalt corrinoids and their chemical redox reactions, and their photochemistry are discussed. Their role as catalysts in non-biological reactions and aspects of their organometallic chemistry are briefly mentioned. Particular mention is made of the role that computational methods - and especially DFT calculations - have played in developing our understanding of the inorganic chemistry of these compounds. A brief overview of the biological chemistry of the B12-dependent enzymes is also given for the reader's convenience.
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Affiliation(s)
- Helder M Marques
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
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5
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Almeida MC, da Costa PM, Sousa E, Resende DISP. Emerging Target-Directed Approaches for the Treatment and Diagnosis of Microbial Infections. J Med Chem 2023; 66:32-70. [PMID: 36586133 DOI: 10.1021/acs.jmedchem.2c01212] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
With the rising levels of drug resistance, developing efficient antimicrobial therapies has become a priority. A promising strategy is the conjugation of antibiotics with relevant moieties that can potentiate their activity by target-directing. The conjugation of siderophores with antibiotics allows them to act as Trojan horses by hijacking the microorganisms' highly developed iron transport systems and using them to carry the antibiotic into the cell. Through the analysis of relevant examples of the past decade, this Perspective aims to reveal the potential of siderophore-antibiotic Trojan horses for the treatment of infections and the role of siderophores in diagnostic techniques. Other conjugated molecules will be the subject of discussion, namely those involving vitamin B12, carbohydrates, and amino acids, as well as conjugated compounds targeting protein degradation and β-lactamase activated prodrugs.
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Affiliation(s)
- Mariana C Almeida
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, FFUP - Faculdade de Farmácia, Universidade do Porto, Rua de Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal.,CIIMAR- Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Paulo M da Costa
- CIIMAR- Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Emília Sousa
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, FFUP - Faculdade de Farmácia, Universidade do Porto, Rua de Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal.,CIIMAR- Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Diana I S P Resende
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, FFUP - Faculdade de Farmácia, Universidade do Porto, Rua de Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal.,CIIMAR- Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
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6
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Shi Y, Li R, Zheng J, Xue Y, Tao Y, Yu B. High-Yield Production of Propionate from 1,2-Propanediol by Engineered Pseudomonas putida KT2440, a Robust Strain with Highly Oxidative Capacity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:16263-16272. [PMID: 36511719 DOI: 10.1021/acs.jafc.2c06405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Bio-based propionate attracts increasing attention owing to its green nature and specific food additive market. To date, the time-consuming and costly fermentation process by strict anaerobes makes propionate production not ideal. In this study, we designed a new route for propionate production, in which 1,2-propanediol was first dehydrated to propionaldehyde and then to propionate by taking advantage of the robust oxidization capacity of the Pseudomonas putida KT2440 strain. The high atom economy (0.97 g/g) in this proposed pathway is more advantageous than the previous l-threonine-derived route (0.62 g/g). The molecular mechanism of the extraordinary oxidation capacity of P. putida KT2440 was first deciphered. The propionate production was realized in P. putida KT2440 by screening suitable glycerol dehydratases and optimizing the expression to eliminate the formation of 1-propanol and the accumulation of the intermediate propionaldehyde. The engineered strain produced propionate with a molar conversion rate of >99% from 1,2-propanediol. A high titer of 46.5 g/L pure propionic acid with a productivity of 1.55 g/L/h and a mass yield of 0.96 g/g was achieved in fed-batch biotransformation. Thus, this study provides another idea for the production of high-purity bio-based propionate from renewable materials with high atom economy.
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Affiliation(s)
- Ya'nan Shi
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongshan Li
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jie Zheng
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yubin Xue
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yong Tao
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Bo Yu
- CAS Key Laboratory of Microbial Physiological & Metabolic Engineering, State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- CAS-TWAS Centre of Excellence for Biotechnology, Beijing 100101, China
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7
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Möller K, Krock B, Koch F. Method optimization of the simultaneous detection of B 12 congeners leading to the detection of a novel isomer of hydroxycobalamin in seawater. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9401. [PMID: 36104947 DOI: 10.1002/rcm.9401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/23/2022] [Accepted: 09/14/2022] [Indexed: 06/15/2023]
Abstract
RATIONALE More than half of surveyed microalgae and over 90% of harmful algae have an obligate requirement for vitamin B12 , but methods for directly measuring dissolved B12 in seawater are scarce due to low concentrations and rapid light-induced hydrolysis. METHODS We present a method to detect and measure the four main congeners of vitamin B12 dissolved in seawater. The method includes solid-phase extraction, separation by ultrahigh-performance liquid chromatography and detection by triple-quadrupole tandem mass spectrometry utilizing an electrospray ion source. This method was applied to coastal field samples collected in the German Bay, Baltic Sea and the Danish Limfjord system. RESULTS The total dissolved B12 pool ranged between 0.5 and 2.1 pM. Under ambient conditions methyl-B12 and adenosyl-B12 were nearly fully hydrolyzed to hydroxy-B12 in less than 1 h. Hydroxy-B12 and a novel, corresponding isomer were the main forms of B12 found at all field sites. This isomer eluted well after the OH-B12 peak and was also detected in commercially available OH-B12 . Both compounds showed very high similarity in their collision-induced dissociation spectra. CONCLUSIONS The high instability of the biologically active forms of Me-B12 and Ado-B12 towards hydrolysis was shown, highlighting the importance of reducing the duration of the extraction protocol. In addition, the vitamin B12 pool in the study area was mostly comprised of a previously undescribed isomer of OH-B12 . Further studies into the structure of this isomer and its bioavailability are needed.
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Affiliation(s)
- Kristof Möller
- Chemische Ökologie, Alfred Wegener Institut-Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bernd Krock
- Chemische Ökologie, Alfred Wegener Institut-Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Florian Koch
- Chemische Ökologie, Alfred Wegener Institut-Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- Hochschule Bremerhaven, Bremerhaven, Germany
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8
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Hassanin HA. Investigation on the interaction of riboflavin with aquacobalamin (Vitamin B12): A fluorescence quenching study. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Barata‐Vallejo S, Yerien DE, Postigo A. Bioinspired Photocatalyzed Organic Synthetic Transformations. The Use of Natural Pigments and Vitamins in Photocatalysis. ChemCatChem 2022. [DOI: 10.1002/cctc.202200623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sebastián Barata‐Vallejo
- Departamento de Ciencias Químicas Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Junin 954 CP 1113- Buenos Aires Argentina
- Istituto per la Sintesis Organica e la Fotorreattivita, ISOF Consiglio Nazionale delle Ricerche Via P. Gobetti 101 40129 Bologna Italy
| | - Damian E. Yerien
- Departamento de Ciencias Químicas Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Junin 954 CP 1113- Buenos Aires Argentina
| | - Al Postigo
- Departamento de Ciencias Químicas Facultad de Farmacia y Bioquímica Universidad de Buenos Aires Junin 954 CP 1113- Buenos Aires Argentina
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10
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Biosynthesis of cobamides: Methods for the detection, analysis and production of cobamides and biosynthetic intermediates. Methods Enzymol 2022; 668:3-23. [PMID: 35589198 DOI: 10.1016/bs.mie.2022.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vitamin B12, cobalamin, belongs to the broader cobamide family whose members are characterized by the presence of a cobalt-containing corrinoid ring. The ability to detect, isolate and characterize cobamides and their biosynthetic intermediates is an important prerequisite when attempting to study the synthesis of this remarkable group of compounds that play diverse roles across the three kingdoms of life. The synthesis of cobamides is restricted to only certain prokaryotes and their structural complexity entails an equally complex synthesis orchestrated through a multi-step biochemical pathway. In this chapter, we have outlined methods that we have found extremely helpful in the characterization of the biochemical pathway, including a plate microbiological assay, a corrinoid affinity extraction method, LCMS characterization and a multigene cloning strategy.
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11
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Yu M, Qiao Y, Li W, Fang X, Gao H, Zheng D, Ma Y. Analysis of clinical characteristics and prognostic factors in 110 patients with nitrous oxide abuse. Brain Behav 2022; 12:e2533. [PMID: 35307992 PMCID: PMC9015005 DOI: 10.1002/brb3.2533] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/31/2021] [Accepted: 02/06/2022] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To review the clinical symptoms, auxiliary examination findings, and outcomes of patients with nitrous oxide (N2 O) abuse, and analyze the factors that affect outcomes. METHODS Patients with N2 O abuse treated in the Department of Neurology between January 2018 and December 2020 were included. The clinical data of these patients were collected, and follow-up was conducted to determine the outcomes. RESULTS The average age of the 110 patients with N2 O abuse was 21.4 ± 4.2 years (range: 14-33 years). Clinical presentation primarily included neurological symptoms, such as limb numbness and/or weakness (97%), psychiatric symptoms, changes in appetite, and skin hyperpigmentation. Laboratory test results were characterized by vitamin B12 deficiency (60%, 34 out of 57 cases) and high homocysteine level (69%, 31 out of 45 cases). Electromyography indicated mixed axonal and demyelination injury (92%, 80 out of 87 cases). Motor and sensory nerves were simultaneously involved, and injury primarily involved the lower limbs. One hundred and seven (97%) patients were clinically diagnosed with peripheral neuropathy, of whom 26 (24%) exhibited spinal abnormalities on magnetic resonance imaging, supporting a diagnosis of subacute combined degeneration. Treatment included N2 O withdrawal and vitamin B12 supplementation. Reexamination of six patients indicated that treatment was effective. Follow-up was completed for 51 patients. Thirty-four patients (67%) recovered completely, 17 patients (33%) had residual limb numbness, and only one patient experienced relapse. Sex was an independent prognostic factor; the outcomes of female patients were better than that of male patients. CONCLUSION The recreational use of N2 O has largely expanded among youth in recent decades, which has become a growing public health concern in China. It highlights the importance of the recognition of various clinical symptoms, particularly limb numbness and/or weakness related to the cases of N2 O abuse. The therapeutic administration of vitamin B12 supplementation and N2 O withdrawal can make the overall prognosis good, especially for female patients.
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Affiliation(s)
- Miao Yu
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yue Qiao
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Weishuai Li
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xiuying Fang
- Department of Neurofunction, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Han Gao
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Dongming Zheng
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Ying Ma
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
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12
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Vásquez L, Parra A, Quesille-Villalobos AM, Gálvez G, Navarrete P, Latorre M, Toro M, González M, Reyes-Jara A. Cobalamin cbiP mutant shows decreased tolerance to low temperature and copper stress in Listeria monocytogenes. Biol Res 2022; 55:9. [PMID: 35236417 PMCID: PMC8889760 DOI: 10.1186/s40659-022-00376-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/24/2022] [Indexed: 02/07/2023] Open
Abstract
Background Listeria monocytogenes is a foodborne pathogen that causes listeriosis in humans. This pathogen activates multiple regulatory mechanisms in response to stress, and cobalamin biosynthesis might have a potential role in bacterial protection. Low temperature is a strategy used in the food industry to control bacteria proliferation; however, L. monocytogenes can grow in cold temperatures and overcome different stress conditions. In this study we selected L. monocytogenes List2-2, a strain with high tolerance to the combination of low temperature + copper, to understand whether the cobalamin biosynthesis pathway is part of the tolerance mechanism to this stress condition. For this, we characterized the transcription level of three cobalamin biosynthesis-related genes (cbiP, cbiB, and cysG) and the eutV gene, a transcriptional regulator encoding gene involved in ethanolamine metabolism, in L. monocytogenes strain List2-2 growing simultaneously under two environmental stressors: low temperature (8 °C) + copper (0.5 mM of CuSO4 × 5H2O). In addition, the gene cbiP, which encodes an essential cobyric acid synthase required in the cobalamin pathway, was deleted by homologous recombination to evaluate the impact of this gene in L. monocytogenes tolerance to a low temperature (8 °C) + different copper concentrations. Results By analyzing the KEGG pathway database, twenty-two genes were involved in the cobalamin biosynthesis pathway in L. monocytogenes List2-2. The expression of genes cbiP, cbiB, and cysG, and eutV increased 6 h after the exposure to low temperature + copper. The cobalamin cbiP mutant strain List2-2ΔcbiP showed less tolerance to low temperature + copper (3 mM) than the wild-type L. monocytogenes List2-2. The addition of cyanocobalamin (5 nM) to the medium reverted the phenotype observed in List2-2ΔcbiP. Conclusion These results indicate that cobalamin biosynthesis is necessary for L. monocytogenes growth under stress and that the cbiP gene may play a role in the survival and growth of L. monocytogenes List2-2 at low temperature + copper. Supplementary Information The online version contains supplementary material available at 10.1186/s40659-022-00376-4.
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Affiliation(s)
- L Vásquez
- Laboratorio de Microbiología y Probióticos, INTA Universidad de Chile, Avenida El Líbano 5524 Macul, Santiago, Chile
| | - A Parra
- Doctorado en Acuicultura, Programa Cooperativo Universidad de Chile, Universidad Católica del Norte, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.,Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
| | - A M Quesille-Villalobos
- Laboratorio de Microbiología y Probióticos, INTA Universidad de Chile, Avenida El Líbano 5524 Macul, Santiago, Chile
| | - G Gálvez
- Laboratorio de Bioingeniería, Instituto de Ciencias de la Ingeniería, Universidad de O'Higgins, Rancagua, Chile
| | - P Navarrete
- Laboratorio de Microbiología y Probióticos, INTA Universidad de Chile, Avenida El Líbano 5524 Macul, Santiago, Chile.,ANID-Millennium Science Initiative Program-Millennium Nucleus in the Biology of the Intestinal Microbiota, Santiago, Chile
| | - M Latorre
- Laboratorio de Bioingeniería, Instituto de Ciencias de la Ingeniería, Universidad de O'Higgins, Rancagua, Chile.,Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, Chile
| | - M Toro
- Laboratorio de Microbiología y Probióticos, INTA Universidad de Chile, Avenida El Líbano 5524 Macul, Santiago, Chile
| | - M González
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, Chile.,Fondap Center for Genome Regulation (CGR), Santiago, Chile
| | - A Reyes-Jara
- Laboratorio de Microbiología y Probióticos, INTA Universidad de Chile, Avenida El Líbano 5524 Macul, Santiago, Chile.
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13
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The Potential Role of Vitamin B12 in the Prevention of COVID-19 Complications: A Narrative Review. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2021. [DOI: 10.22207/jpam.15.4.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The elderly are more prone to mortality from COVID-19 infection, as they are susceptible to develop acute respiratory distress syndrome (ARDS). For COVID-19 patients with ARDS caused by sepsis or septic shock, high-dose parenteral vitamin B12 appears to be a potential new treatment option. Vitamin B12 may play a substantial impact in COVID-19 morbidity and mortality reduction owing to its function in DNA synthesis, cellular control, improvement of anti-inflammatory immune responses, and decrease of pro-inflammatory responses. This review aims to assess the functional role of Vitamin B12 in COVID-19 in terms of its immunomodulatory effect, role in cellular and humoral immunity and maintaining the gut microbe homeostasis. From data inception to June 2021, accessible electronic databases were searched for research/review articles reporting on the function of Vitamin B12 in COVID-19. Scopus, Web of Science, PubMed, WHO worldwide research on COVID-19 and the clinical trials registration “https://clinicaltrials.gov/” were used to conduct the systematic search by using keywords: “COVID-19 and “Vitamin B12”. Also, based on these outcomes, it can be concluded that Vitamin B12 may have a potential role in preventing COVID-19 complications. Further, studies evaluating the role of Vitamin B12 in COVID-19 may open a new array of ideas on the optimal and the well-tolerated dose and timing of its administration in COVID-19 patients.
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14
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Dereven’kov IA, Ugodin KA, Makarov SV. Mechanism of the Reaction between Cyanocobalamin and Reduced Flavin Mononucleotide. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s003602442110006x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Kaplan S, Türk A. Effects of vitamin B12 on rat ovary with ischemia-reperfusion injury. Biotech Histochem 2021; 97:284-289. [PMID: 34353191 DOI: 10.1080/10520295.2021.1961863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
We investigated the histopathological and biochemical effects of vitamin B12 on ischemia-reperfusion (I-R) injury using a rat ovarian torsion-detorsion model. We used four groups of female Wistar albino rats. Group 1 (sham group): both ovaries were removed. Group 2 (torsion group): ovarian torsion was established. Group 3 (torsion-detorsion group) perfusion was retored after ischemia for 2 h. Group 4 (torsion-detorsion-vitamin B12 group): after 2 h ovarian torsion, perfusion was re-established and 4 mg/kg vitamin B12 was administered for 2 h. Follicular degeneration, vascular congestion, hemorrhage, edema and infiltration were evaluated histologically. Tissue damage was decreased in group 4 compared to groups 2 and 3. Total antioxidant status TAS), total oxidant status (TOS) and malondialdehyde (MDA) level were measured. The values for TOS and MDA for groups 1 and 4 were similar. We found a significant increase in MDA and TOS levels in group 3 compared to group 2. MDA and TAS levels decreased and TOS levels were increased in group 4 compared to groups 2 and 3. MDA, TAS and TOS values were increased in groups 2 and 3 compared to group 1. We found that vitamin B12 reduced I-R damage in the rat ovary.
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Affiliation(s)
- Selçuk Kaplan
- Department of Gynecology and Obstetrics, Adıyaman Univercity School of Medicine, Adıyaman, Turkey
| | - Ahmet Türk
- Department of Histology and Embryology, Adıyaman Univercity School of Medicine, Adıyaman, Turkey
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16
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Pucci C, Martinelli C, Degl'Innocenti A, Desii A, De Pasquale D, Ciofani G. Light-Activated Biomedical Applications of Chlorophyll Derivatives. Macromol Biosci 2021; 21:e2100181. [PMID: 34212510 DOI: 10.1002/mabi.202100181] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/06/2021] [Indexed: 02/01/2023]
Abstract
Tetrapyrroles are the basis of essential physiological functions in most living organisms. These compounds represent the basic scaffold of porphyrins, chlorophylls, and bacteriochlorophylls, among others. Chlorophyll derivatives, obtained by the natural or artificial degradation of chlorophylls, present unique properties, holding great potential in the scientific and medical fields. Indeed, they can act as cancer-preventing agents, antimutagens, apoptosis inducers, efficient antioxidants, as well as antimicrobial and immunomodulatory molecules. Moreover, thanks to their peculiar optical properties, they can be exploited as photosensitizers for photodynamic therapy and as vision enhancers. Most of these molecules, however, are highly hydrophobic and poorly soluble in biological fluids, and may display undesired toxicity due to accumulation in healthy tissues. The advent of nanomedicine has prompted the development of nanoparticles acting as carriers for chlorophyll derivatives, facilitating their targeted administration with demonstrated applicability in diagnosis and therapy. In this review, the chemical and physical properties of chlorophyll derivatives that justify their usage in the biomedical field, with particular regard to light-activated dynamics are described. Their role as antioxidants and photoactive agents are discussed, introducing the most recent nanomedical applications and focusing on inorganic and organic nanocarriers exploited in vitro and in vivo.
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Affiliation(s)
- Carlotta Pucci
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Chiara Martinelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
| | - Andrea Degl'Innocenti
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Andrea Desii
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Daniele De Pasquale
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Gianni Ciofani
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
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17
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Kiessling E, Nötzli S, Todorova V, Forny M, Baumgartner MR, Samardzija M, Krijt J, Kožich V, Grimm C, Froese DS. Absence of MMACHC in peripheral retinal cells does not lead to an ocular phenotype in mice. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166201. [PMID: 34147638 DOI: 10.1016/j.bbadis.2021.166201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 01/10/2023]
Abstract
Combined methylmalonic aciduria with homocystinuria (cblC type) is a rare disease caused by mutations in the MMACHC gene. MMACHC encodes an enzyme crucial for intracellular vitamin B12 metabolism, leading to the accumulation of toxic metabolites e.g. methylmalonic acid (MMA) and homocysteine (Hcy), and secondary disturbances in folate and one-carbon metabolism when not fully functional. Patients with cblC deficiency often present in the neonatal or early childhood period with a severe multisystem pathology, which comprises a broad spectrum of treatment-resistant ophthalmological phenotypes, including retinal degeneration, impaired vision, and vascular changes. To examine the potential function of MMACHC in the retina and how its loss may impact disease, we performed gene expression studies in human and mouse, which showed that local expression of MMACHC in the retina and retinal pigment epithelium is relatively stable over time. To study whether functional MMACHC is required for retinal function and tissue integrity, we generated a transgenic mouse lacking Mmachc expression in cells of the peripheral retina. Characterization of this mouse revealed accumulation of cblC disease related metabolites, including MMA and the folate-dependent purine synthesis intermediates AICA-riboside and SAICA-riboside in the retina. Nevertheless, fundus appearance, morphology, vasculature, and cellular composition of the retina, as well as ocular function, remained normal in mice up to 6 or 12 months of age. Our data indicates that peripheral retinal neurons do not require intrinsic expression of Mmachc for survival and function and questions whether a local MMACHC deficiency is responsible for the retinal phenotypes in patients.
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Affiliation(s)
- Eva Kiessling
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Sarah Nötzli
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Vyara Todorova
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Merima Forny
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland
| | - Matthias R Baumgartner
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland
| | - Marijana Samardzija
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Jakub Krijt
- Dept. of Pediatrics and Inherited Metabolic Disorders, Charles University-First Faculty of Medicine and General University Hospital, Prague, Czech Republic
| | - Viktor Kožich
- Dept. of Pediatrics and Inherited Metabolic Disorders, Charles University-First Faculty of Medicine and General University Hospital, Prague, Czech Republic
| | - Christian Grimm
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland.
| | - D Sean Froese
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland.
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18
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Mechanism of aquacobalamin decomposition in aqueous aerobic solutions containing glucose oxidase and glucose. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-01992-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Osman D, Cooke A, Young TR, Deery E, Robinson NJ, Warren MJ. The requirement for cobalt in vitamin B 12: A paradigm for protein metalation. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2021; 1868:118896. [PMID: 33096143 PMCID: PMC7689651 DOI: 10.1016/j.bbamcr.2020.118896] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/20/2022]
Abstract
Vitamin B12, cobalamin, is a cobalt-containing ring-contracted modified tetrapyrrole that represents one of the most complex small molecules made by nature. In prokaryotes it is utilised as a cofactor, coenzyme, light sensor and gene regulator yet has a restricted role in assisting only two enzymes within specific eukaryotes including mammals. This deployment disparity is reflected in another unique attribute of vitamin B12 in that its biosynthesis is limited to only certain prokaryotes, with synthesisers pivotal in establishing mutualistic microbial communities. The core component of cobalamin is the corrin macrocycle that acts as the main ligand for the cobalt. Within this review we investigate why cobalt is paired specifically with the corrin ring, how cobalt is inserted during the biosynthetic process, how cobalt is made available within the cell and explore the cellular control of cobalt and cobalamin levels. The partitioning of cobalt for cobalamin biosynthesis exemplifies how cells assist metalation.
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Affiliation(s)
- Deenah Osman
- Department of Biosciences, Durham University, Durham DH1 3LE, UK; Department of Chemistry, Durham University, Durham DH1 3LE, UK.
| | - Anastasia Cooke
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - Tessa R Young
- Department of Biosciences, Durham University, Durham DH1 3LE, UK; Department of Chemistry, Durham University, Durham DH1 3LE, UK.
| | - Evelyne Deery
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - Nigel J Robinson
- Department of Biosciences, Durham University, Durham DH1 3LE, UK; Department of Chemistry, Durham University, Durham DH1 3LE, UK.
| | - Martin J Warren
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK; Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, UK; Biomedical Research Centre, University of East Anglia, Norwich NR4 7TJ, UK.
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20
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Bam R, Pollatos AS, Moser AJ, West JG. Mild olefin formation via bio-inspired vitamin B 12 photocatalysis. Chem Sci 2020; 12:1736-1744. [PMID: 34163933 PMCID: PMC8179286 DOI: 10.1039/d0sc05925k] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Dehydrohalogenation, or elimination of hydrogen-halide equivalents, remains one of the simplest methods for the installation of the biologically-important olefin functionality. However, this transformation often requires harsh, strongly-basic conditions, rare noble metals, or both, limiting its applicability in the synthesis of complex molecules. Nature has pursued a complementary approach in the novel vitamin B12-dependent photoreceptor CarH, where photolysis of a cobalt–carbon bond leads to selective olefin formation under mild, physiologically-relevant conditions. Herein we report a light-driven B12-based catalytic system that leverages this reactivity to convert alkyl electrophiles to olefins under incredibly mild conditions using only earth abundant elements. Further, this process exhibits a high level of regioselectivity, producing terminal olefins in moderate to excellent yield and exceptional selectivity. Finally, we are able to access a hitherto-unknown transformation, remote elimination, using two cobalt catalysts in tandem to produce subterminal olefins with excellent regioselectivity. Together, we show vitamin B12 to be a powerful platform for developing mild olefin-forming reactions. Terminal or subterminal olefins can be selectively formed from alkyl electrophiles via bio-inspired vitamin B12 photocatalysis.![]()
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Affiliation(s)
- Radha Bam
- Department of Chemistry, Rice University 6500 Main St Houston TX USA .westchem.org
| | | | - Austin J Moser
- Department of Chemistry, Rice University 6500 Main St Houston TX USA .westchem.org
| | - Julian G West
- Department of Chemistry, Rice University 6500 Main St Houston TX USA .westchem.org
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21
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Ranguin R, Ncibi MC, Cesaire T, Lavoie S, Jean-Marius C, Grutzmacher H, Gaspard S. Development and characterisation of a nanostructured hybrid material with vitamin B12 and bagasse-derived activated carbon for anaerobic chlordecone (Kepone) removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:41122-41131. [PMID: 32232761 DOI: 10.1007/s11356-020-08201-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Intensive use of the chlorinated pesticide chlordecone from the 1970s to 1993 to prevent crop damage in banana plantations of Guadeloupe and Martinique led to diffuse pollution of soils and surface waters, affecting both fauna and human beings in the contaminated areas. Since 2001, drinking water production plants have been equipped with filters containing activated carbon that must be treated after saturation. The objective of this work is to produce a hybrid material composed of activated carbon and vitamin B12 (VB12) for the degradation of chlordecone (CLD). The preparation of such a hybrid material is carried out by non-covalent fixation to achieve an eco-friendly solution for the serious environmental problem of contamination by chlorinated pesticides. It is thus proposed to degrade CLD by a physico-chemical treatment allowing salvage of the catalyst, which is adsorbed on the carbon surface to generate less waste that is inexpedient to treat. Activated carbon (AC) is produced locally from available sugarcane bagasse subjected to phosphoric acid activation. The main characteristics of this material are a major mesoporous structure (0.91%) and a specific (BET) surface area ranging from 1000 to 1500 m2 g-1. The experimental results showed that BagP1.5 has a high adsorption capacity for VB12 due to its large surface area (1403 m2 g-1). The binding of VB12 to the bagasse-derived AC is favoured at high temperatures. The adsorption is optimal at a pH of approximately 6. The maximum adsorption capacity of VB12 on the AC, deduced from the Langmuir model, was 306 mg g-1, confirming the high affinity between the two components. The hybrid material was characterised by FTIR, Raman, X-ray fluorescence spectroscopy and SEM analysis. CLD removal by this hybrid material was faster than that by VB12 or BagP1.5 alone. The CLD degradation products were characterised by mass spectrometry.
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Affiliation(s)
- Ronald Ranguin
- Laboratoire COVACHIM-M2E, EA 3592, Université des Antilles, BP 250, 97157 Cedex, Pointe-à-Pitre, Guadeloupe, France
| | - Mohammed Chaker Ncibi
- Laboratoire COVACHIM-M2E, EA 3592, Université des Antilles, BP 250, 97157 Cedex, Pointe-à-Pitre, Guadeloupe, France
- Department of Green Chemistry, School of Engineering Science, Lappeenranta University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Thierry Cesaire
- Laboratoire GTSI, EA 2432, Université des Antilles et de la Guyane, BP 250, 97157 Cedex, Pointe-à-Pitre, Guadeloupe, France
| | - Serge Lavoie
- Institut des Sciences de la Forêt Tempérée, Université du Québec en Outaouais, 58, rue Principale, Ripon, Québec, J0V 1V0, Canada
| | - Corine Jean-Marius
- Laboratoire COVACHIM-M2E, EA 3592, Université des Antilles, BP 250, 97157 Cedex, Pointe-à-Pitre, Guadeloupe, France
| | - HansJörg Grutzmacher
- Laboratorium für Anorganische Chemie, ETH Hönggerberg, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Sarra Gaspard
- Laboratoire COVACHIM-M2E, EA 3592, Université des Antilles, BP 250, 97157 Cedex, Pointe-à-Pitre, Guadeloupe, France.
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22
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Salah R, Salama MF, Mahgoub HA, El-Sherbini ES. Antitumor activity of sitagliptin and vitamin B12 on Ehrlich ascites carcinoma solid tumor in mice. J Biochem Mol Toxicol 2020; 35:e22645. [PMID: 33016524 DOI: 10.1002/jbt.22645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/10/2020] [Accepted: 09/22/2020] [Indexed: 12/14/2022]
Abstract
This study was carried out to investigate the potential effects of vitamin B12 and sitagliptin, and their possible synergistic effect with doxorubicin (DOX) on the Ehrlich solid tumor model. B12, sitagliptin, and their combination with DOX were administered to tumor-bearing mice for 21 days. Treatment with B12, sitagliptin, as well as their combinations with DOX caused a significant inhibition of tumor growth and increased the survival time. Malondialdehyde levels and the relative expression of tumor necrosis factor-α and nuclear factor kappa B were significantly decreased, whereas the total antioxidant capacity was significantly increased in all treated groups, except the DOX-treated one, when compared with the positive control group. Moreover, increased apoptosis was also observed by increased cleaved caspase-3 immunostaining and histopathological examination. In conclusion, the antitumor activity of B12 and sitagliptin could be attributed to their ability to induce apoptosis and suppress oxidative stress and inflammation.
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Affiliation(s)
- Rania Salah
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed F Salama
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Hebatallah A Mahgoub
- Department of Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - El-Said El-Sherbini
- Department of Biochemistry, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
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23
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Zhang Y, Zheng J. Bioinformatics of Metalloproteins and Metalloproteomes. Molecules 2020; 25:molecules25153366. [PMID: 32722260 PMCID: PMC7435645 DOI: 10.3390/molecules25153366] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 12/14/2022] Open
Abstract
Trace metals are inorganic elements that are required for all organisms in very low quantities. They serve as cofactors and activators of metalloproteins involved in a variety of key cellular processes. While substantial effort has been made in experimental characterization of metalloproteins and their functions, the application of bioinformatics in the research of metalloproteins and metalloproteomes is still limited. In the last few years, computational prediction and comparative genomics of metalloprotein genes have arisen, which provide significant insights into their distribution, function, and evolution in nature. This review aims to offer an overview of recent advances in bioinformatic analysis of metalloproteins, mainly focusing on metalloprotein prediction and the use of different metals across the tree of life. We describe current computational approaches for the identification of metalloprotein genes and metal-binding sites/patterns in proteins, and then introduce a set of related databases. Furthermore, we discuss the latest research progress in comparative genomics of several important metals in both prokaryotes and eukaryotes, which demonstrates divergent and dynamic evolutionary patterns of different metalloprotein families and metalloproteomes. Overall, bioinformatic studies of metalloproteins provide a foundation for systematic understanding of trace metal utilization in all three domains of life.
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Affiliation(s)
- Yan Zhang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China;
- Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
- Correspondence: ; Tel.: +86-755-2692-2024
| | - Junge Zheng
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China;
- Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
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24
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Leone L, Chino M, Nastri F, Maglio O, Pavone V, Lombardi A. Mimochrome, a metalloporphyrin‐based catalytic Swiss knife†. Biotechnol Appl Biochem 2020; 67:495-515. [DOI: 10.1002/bab.1985] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/09/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Linda Leone
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
| | - Marco Chino
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
| | - Flavia Nastri
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
| | - Ornella Maglio
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
- IBB ‐ National Research Council Napoli Italy
| | - Vincenzo Pavone
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
| | - Angela Lombardi
- Department of Chemical Sciences University of Napoli “Federico II” Napoli Italy
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25
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Goodarzi A, Behrangi E, Bazargan AS, Rohaninasab M, Hosseini-Baharanchi FS, Shemshadi M, Vafaei E. The association between melasma and iron profile: a case-control study. RUSSIAN OPEN MEDICAL JOURNAL 2020. [DOI: 10.15275/rusomj.2020.0202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background — Melasma is a chronic acquired localized hypermelanosis, causing aesthetic problem for women and impairing their quality of life. Evidence has suggested that hyperpigmentation can occur as a result of iron deficiency anemia and vitamin B12 deficiency. Aim — We aimed to evaluate the serum parameters of iron profile in melasma patients. Material and Methods — This case-control study investigated 51 adult non pregnant women with melasma, compared with 51 controls, from patients referred to the Hospital, Tehran, Iran, 2017–2018. Melasma was diagnosed clinically according to the melasma area and severity index (MASI) score was calculated and recorded by the physician. The groups were compared in terms of vitamin B12, folate, serum iron, hemoglobin (Hb), mean corpuscular volume (MCV), total iron binding capacity (TIBC), and ferritin. Results — The mean and standard deviation of the women’s age was 36.89±8.88 years, significantly higher in the group of patients with melasma. Comparing the serum parameters between the groups indicated no statistically significant difference in terms of mean levels of ferritin, Hb, MCV, iron, vitamin B12, TIBC, and folate. The women in melasma group had a higher frequency in below normal range of ferritin and serum iron compared to the control group. None of the serum parameters were correlated with MASI. Conclusion — The higher frequency of below normal range of ferritin and serum iron levels in women with melasma compared to the control group showed a possible association between these serum parameters and melasma.
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26
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Sitte E, Senge MO. The Red Color of Life Transformed - Synthetic Advances and Emerging Applications of Protoporphyrin IX in Chemical Biology. European J Org Chem 2020; 2020:3171-3191. [PMID: 32612451 PMCID: PMC7319466 DOI: 10.1002/ejoc.202000074] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Indexed: 01/10/2023]
Abstract
Protoporphyrin IX (PPIX) is the porphyrin scaffold of heme b, a ubiquitous prosthetic group of proteins responsible for oxygen binding (hemoglobin, myoglobin), electron transfer (cytochrome c) and catalysis (cytochrome P450, catalases, peroxidases). PPIX and its metallated derivatives frequently find application as therapeutic agents, imaging tools, catalysts, sensors and in light harvesting. The vast toolkit of accessible porphyrin functionalization reactions enables easy synthetic modification of PPIX to meet the requirements for its multiple uses. In the past few years, particular interest has arisen in exploiting the interaction of PPIX and its synthetic derivatives with biomolecules such as DNA and heme-binding proteins to evolve molecular devices with new functions as well as to uncover potential therapeutic toeholds. This review strives to shine a light on the most recent developments in the synthetic chemistry of PPIX and its uses in selected fields of chemical biology.
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Affiliation(s)
- Elisabeth Sitte
- School of ChemistryTrinity College DublinThe University of DublinTrinity Biomedical Sciences Institute152‐160 Pearse Street2DublinIreland
| | - Mathias O. Senge
- School of ChemistryTrinity College DublinThe University of DublinTrinity Biomedical Sciences Institute152‐160 Pearse Street2DublinIreland
- Institute for Advanced Study (TUM‐IAS)Technische Universität MünchenLichtenberg‐Str. 2a85748GarchingGermany
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27
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Younus N, Zuberi A, Rashidpour A, Metón I. Dietary cobalt supplementation improves growth and body composition and induces the expression of growth and stress response genes in Tor putitora. FISH PHYSIOLOGY AND BIOCHEMISTRY 2020; 46:371-381. [PMID: 31709460 DOI: 10.1007/s10695-019-00723-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
A 90-day randomized feeding experiment was performed to assess the effects of dietary cobalt (Co) supplementation on the growth performance, muscle composition, status of iron and manganese in the muscle as well as the expression of growth-related genes in the muscle (myoblast determination protein 1 homolog (MyoD) and myogenin) and the stress-related gene heat shock protein 70 KDa (Hsp-70) in the liver of mahseer (Tor putitora). Feeding trial was conducted in triplicate under controlled semi-static conditions, and graded levels of dietary cobalt (0.5-3 mg/kg) were fed to six groups of advanced fry of T. putitora. The results obtained indicated a curvilinear relationship of dietary Co levels with body crude protein content and weight gain (%). A positive correlation was observed with up to 2 mg Co/kg diet. However, a decreasing trend was found with values over 2 mg Co/kg diet. The expression of muscle growth biomarkers MyoD and myogenin showed a similar response, upregulation up to 2 mg Co/kg diet and decreased expression at 3 mg Co/kg diet. Indeed, the highest dietary Co supplementation increased the expression of Hsp-70, a key gene expressed in response to stress. Moreover, the muscle content of iron and manganese showed an inverse relationship with the dietary Co supplementation. Our findings suggest that 2 mg/kg Co dietary supplementation stimulates myogenesis and optimize muscle growth and body composition, while higher levels enhanced the expression of stress response genes and impaired growth of T. putitora.
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Affiliation(s)
- Naima Younus
- Fisheries and Aquaculture program, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- Secció de Bioquímica i Biologia Molecular, Departament de Bioquímica i Fisiologia, Universitat de Barcelona, Joan XXIII 27-31, 08028, Barcelona, Spain
| | - Amina Zuberi
- Fisheries and Aquaculture program, Department of Animal Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
| | - Ania Rashidpour
- Secció de Bioquímica i Biologia Molecular, Departament de Bioquímica i Fisiologia, Universitat de Barcelona, Joan XXIII 27-31, 08028, Barcelona, Spain
| | - Isidoro Metón
- Secció de Bioquímica i Biologia Molecular, Departament de Bioquímica i Fisiologia, Universitat de Barcelona, Joan XXIII 27-31, 08028, Barcelona, Spain.
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Zheng R, Wang Q, Li M, Liu F, Zhang Y, Zhao B, Sun Y, Zhang D, Yan C, Zhao Y, Li W. Reversible Neuropsychiatric Disturbances Caused by Nitrous Oxide Toxicity: Clinical, Imaging and Electrophysiological Profiles of 21 Patients with 6-12 Months Follow-up. Neuropsychiatr Dis Treat 2020; 16:2817-2825. [PMID: 33262596 PMCID: PMC7695601 DOI: 10.2147/ndt.s270179] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/18/2020] [Indexed: 12/28/2022] Open
Abstract
PURPOSE Nitrous oxide (N2O) abuse has become an increasingly severe problem in China. The aim of the study was to summarize the features of N2O-induced neurology and enhance the awareness of this disease among physicians. PATIENTS AND METHODS We retrospectively reviewed the clinical, imaging, electrophysiological characteristics and the prognosis of patients with N2O neurotoxicity in our hospital from January 2016 to August 2019. RESULTS Twenty-one patients (average age: 22.6±4.6 years) were collected. Eighty-six percent (18/21) patients presented with acute or subacute neurological disorders as their initial symptoms. The remaining fourteen percent (3/21) had psychiatric symptoms as the earliest symptoms. With progression, movement dysfunction appeared in ninety percent (19/21) of the patients with fifty-three percent (10/19) presented with weakness limited to both lower extremities. Sixty-two percent (13/21) of the patients presented with subjective sensory deficit. Seventy-one percent (15/21) had vibration sense impairment and positive Romberg's sign. Sixty-seven percent of the patients had hyporeflexia or areflexia. Fourteen percent (3/21) showed positive Babinski's sign. Seventy-eight percent (14/18) showed significantly increased homocysteine (HCY) level and only seventeen percent (3/18) showed decreased serum vitamin B12 level. T2 hyperintensity involving the posterior columns and lateral columns with inverted V sign in cervical spinal MRI had been observed in forty-seven percent (8/17) of the patients. Axonal peripheral neuropathy occurred in eighty-five percent (17/20) of the patients. The level of serum vitamin B12 and HCY, as well as imaging findings, were rapidly recovered after supplementation of Vitamin B12. CONCLUSION The N2O-induced neuropsychiatric disturbances mainly occurred in the young groups and should be recognized by clinicians. The prognosis of N2O intoxication is relatively good.
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Affiliation(s)
- Rui Zheng
- Department of Neurology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao City, People's Republic of China
| | - Qinzhou Wang
- Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, People's Republic of China
| | - Mingyuan Li
- EMG-Evoked Potential Room, Binzhou Medical University Hospital, Binzhou City, People's Republic of China
| | - Fuchen Liu
- Department of Neuroscience, Yale School of Medicine, New Haven, CT, USA
| | - Yongqing Zhang
- Department of Neurology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao City, People's Republic of China
| | - Bing Zhao
- Department of Neurology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao City, People's Republic of China
| | - Yuan Sun
- Department of Neurology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao City, People's Republic of China
| | - Dong Zhang
- Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, People's Republic of China
| | - Chuanzhu Yan
- Department of Neurology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao City, People's Republic of China.,Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, People's Republic of China
| | - Yuying Zhao
- Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, People's Republic of China
| | - Wei Li
- Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, People's Republic of China
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Torres AC, Elean M, Hebert EM, Saavedra L, Taranto MP. Metabolic shift in the production of corrinoid compounds by Lactobacillus coryniformis in the absence of purines. Biochimie 2020; 168:185-189. [DOI: 10.1016/j.biochi.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 11/05/2019] [Indexed: 11/25/2022]
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Dereven'kov IA, Hannibal L, Makarov SV, Molodtsov PA. Catalytic effect of riboflavin on electron transfer from NADH to aquacobalamin. J Biol Inorg Chem 2019; 25:125-133. [PMID: 31773269 DOI: 10.1007/s00775-019-01745-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/21/2019] [Indexed: 11/26/2022]
Abstract
Reduction of cobalamin by non-dedicated cellular reductases has been reported in earlier work, however, the sources of reducing power and the mechanisms are unknown. This study reports results of kinetic and mechanistic investigation of the reaction between aquacobalamin, H2OCbl, and reduced β-nicotinamide adenine dinucleotide, NADH. This interaction leads to the formation of one-electron reduced cobalamin, cob(II)alamin, and proceeds via water substitution on aquacobalamin by NADH and further decomposition of NADH-Co(III) complex to cob(II)alamin and NADH·+. Riboflavin catalyzes the reduction of aquacobalamin by NADH both in free form and with aquacobalamin bound to the cobalamin processing enzyme CblC. The rate-determining step of this catalytic reaction is the interaction between riboflavin and NADH to produce a charge transfer complex that reacts with aquacobalamin. Aquacobalamin quenches the fluorescence of NADH and riboflavin predominantly via a static mechanism.
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Affiliation(s)
- Ilia A Dereven'kov
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Sheremetevskiy Str. 7, 153000, Ivanovo, Russian Federation.
| | - Luciana Hannibal
- Laboratory of Clinical Biochemistry and Metabolism, Department of General Pediatrics, Adolescent Medicine and Neonatology, Faculty of Medicine, Medical Center, University of Freiburg, 79106, Freiburg, Germany
| | - Sergei V Makarov
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Sheremetevskiy Str. 7, 153000, Ivanovo, Russian Federation
| | - Pavel A Molodtsov
- Department of Food Chemistry, Ivanovo State University of Chemistry and Technology, Sheremetevskiy Str. 7, 153000, Ivanovo, Russian Federation
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31
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Ma AT, Tyrell B, Beld J. Specificity of cobamide remodeling, uptake and utilization in Vibrio cholerae. Mol Microbiol 2019; 113:89-102. [PMID: 31609521 DOI: 10.1111/mmi.14402] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2019] [Indexed: 12/11/2022]
Abstract
Cobamides are a group of compounds including vitamin B12 that can vary at the lower base position of the nucleotide loop. They are synthesized de novo by only a subset of prokaryotes, but some organisms encode partial biosynthesis pathways for converting one variant to another (remodeling) or completing biosynthesis from an intermediate (corrinoid salvaging). Here, we explore the cobamide specificity in Vibrio cholerae through examination of three natural variants representing major cobamide groups: commercially available cobalamin, and isolated pseudocobalamin and p-cresolylcobamide. We show that BtuB, the outer membrane corrinoid transporter, mediates the uptake of all three variants and the intermediate cobinamide. Our previous work suggested that V. cholerae could convert pseudocobalamin produced by cyanobacteria into cobalamin. In this work, cobamide specificity in V. cholerae is demonstrated by remodeling of pseudocobalamin and salvaging of cobinamide to produce cobalamin. Cobamide remodeling in V. cholerae is distinct from the canonical pathway requiring amidohydrolase CbiZ, and heterologous expression of V. cholerae CobS was sufficient for remodeling. Furthermore, function of V. cholerae cobamide-dependent methionine synthase MetH was robustly supported by cobalamin and p-cresolylcobamide, but not pseudocobalamin. Notably, the inability of V. cholerae to produce and utilize pseudocobalamin contrasts with enteric bacteria like Salmonella.
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Affiliation(s)
- Amy T Ma
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, 19102, USA
| | - Breanna Tyrell
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, 19102, USA
| | - Joris Beld
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, 19102, USA
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32
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The sharp rise of neurological disorders associated with recreational nitrous oxide use in China: a single-center experience and a brief review of Chinese literature. J Neurol 2019; 267:422-429. [PMID: 31655888 DOI: 10.1007/s00415-019-09600-w] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 02/01/2023]
Abstract
INTRODUCTION In recent years, there has been a sharp increase in the number of patients with neurological disorders associated with recreational use of nitrous oxide (N2O) in China. Here, we summarize the clinical characteristics of patients with neurological disorders associated with N2O abuse diagnosed in our Hospital. Further, we conducted a literature search on recent cases reported in mainland China to improve the awareness of the outbreak of neurological disorders associated with N2O abuse. METHODS We retrospectively collected data of patients diagnosed with neurological disorders associated with recreational use of N2O in Shengjing Hospital of China Medical University from January 2018 to June 2019, and performed a literature search using the "nitrous oxide" and "neurological disorder" as keywords in the Chinese literature databases of WANFANG and CNKI and the English literature databases of Pubmed and Web of Science RESULTS: We enrolled 43 patients (average age: 21.9 ± 3.3 years). The main clinical manifestations were weakness and paresthesia in the four extremities and unsteady gait. Further, most patients showed significantly lower levels of serum vitamin B12 (169.4 ± 79.1 pg/mL) and increased homocysteine levels (78.1 ± 32.2 μmol/L). MRI of the spinal cord showed longitudinal high T2 signal lesions in the dorsal spinal cord in some patients. Moreover, electromyography showed sensory and motor nerve axonal damage combined with demyelination, which was relatively more severe in the lower limbs. There was rapid improvement of the symptoms after treatment with intramuscular injections of vitamin B12 and the overall prognosis was good. The literature search indicated that the number of published papers and related patients showed a rapid annual increase since the first Chinese case reported in 2016 CONCLUSION: Recreational use of N2O is an emerging public health problem in China that needs prompt action from the society and government. Early diagnosis and treatment allow a good overall prognosis.
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33
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Elucidating the mechanism of cob(I)alamin mediated methylation reactions by alkyl halides: SN2 or radical mechanism? J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Maiorova LA, Erokhina SI, Pisani M, Barucca G, Marcaccio M, Koifman OI, Salnikov DS, Gromova OA, Astolfi P, Ricci V, Erokhin V. Encapsulation of vitamin B 12 into nanoengineered capsules and soft matter nanosystems for targeted delivery. Colloids Surf B Biointerfaces 2019; 182:110366. [PMID: 31351273 DOI: 10.1016/j.colsurfb.2019.110366] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/10/2019] [Accepted: 07/13/2019] [Indexed: 12/25/2022]
Abstract
Targeted delivery of vitamins to a desirable area is an active branch in a modern pharmacology. The most important and difficult delivery of vitamin B12 is that to bone marrow and nerve cells. Herein we present a first step towards the development of two types of smart carriers, polymer capsules and lyotropic liquid-crystalline nanosystems, for vitamin B12 targeted delivery and induced release. A vitamin B12 encapsulation technique into nanoengineered polymeric capsules produced by layer-by-layer assembling of polymeric shells on CaCO3 templates has been developed. The effectiveness of the process was demonstrated by optical absorption spectroscopy, transmission electron microscopy (TEM), atomic force microscopy (AFM) and small-angle X-ray diffraction. TEM and AFM analyses performed on capsules after their drying, confirmed the presence of the vitamin B12 inside the capsules in the form of crystalline nanoaggregates, 50-300 nm in diameter. Soft lipid nanovectors consisting of amphiphilic phytantriol molecules, which in water excess spontaneously self-assembly in 3D well-ordered inverse bicontinuous cubic bulk phase, were used as alternative carriers for vitamin B12. It was shown that about 30% of the vitamin added in the preparation of the soft lipid system was actually encapsulated in cubosomes and that no structural changes occurred upon loading. The Vitamin stabilizes the lipid system playing the role of its structure-forming element. The biocompatible nature, the stability and the feasibility of these systems make them good candidates as carriers for hydrophilic vitamins.
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Affiliation(s)
- Larissa A Maiorova
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr., 7, 153000, Ivanovo, Russia.
| | - Svetlana I Erokhina
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parma, 43124, Italy; Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, 420008, Russia
| | - Michela Pisani
- Department SIMAU, Università Politecnica delle Marche, 60131, Ancona, Italy.
| | - Gianni Barucca
- Department SIMAU, Università Politecnica delle Marche, 60131, Ancona, Italy
| | - Massimo Marcaccio
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Oscar I Koifman
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr., 7, 153000, Ivanovo, Russia; Institute of Solution Chemistry, Russian Academy of Sciences, 1 ul. Akademicheskaya, 153045, Ivanovo, Russia
| | - Denis S Salnikov
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr., 7, 153000, Ivanovo, Russia
| | - Olga A Gromova
- Institute of Pharmacoinformatics, Federal Research Center "Computer Science and Control", Russian Academy of Sciences, 119333, Moscow, Russia
| | - Paola Astolfi
- Department SIMAU, Università Politecnica delle Marche, 60131, Ancona, Italy
| | - Valentina Ricci
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parma, 43124, Italy
| | - Victor Erokhin
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parma, 43124, Italy; Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, 420008, Russia.
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Jakubaszek M, Rossier J, Karges J, Delasoie J, Goud B, Gasser G, Zobi F. Evaluation of the Potential of Cobalamin Derivatives Bearing Ru(II) Polypyridyl Complexes as Photosensitizers for Photodynamic Therapy. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900104] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marta Jakubaszek
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology FR-75005 Paris France
- Institut CuriePSL University, CNRS UMR 144 FR-75248 Paris France
| | - Jeremie Rossier
- Chemistry DepartmentUniversity of Fribourg CH-1700 Fribourg Switzerland
| | - Johannes Karges
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology FR-75005 Paris France
| | - Joachim Delasoie
- Chemistry DepartmentUniversity of Fribourg CH-1700 Fribourg Switzerland
| | - Bruno Goud
- Institut CuriePSL University, CNRS UMR 144 FR-75248 Paris France
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology FR-75005 Paris France
| | - Fabio Zobi
- Chemistry DepartmentUniversity of Fribourg CH-1700 Fribourg Switzerland
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36
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Huang J, Nguyen M, Liu Y, Robert A, Meunier B. The TDMQ Regulators of Copper Homeostasis Do Not Disturb the Activities of Cu,Zn-SOD, Tyrosinase, or the CoIII
Cofactor Vitamin B12. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ju Huang
- School of Chemical Engineering and Light Industry; Higher Education Mega Center; Guangdong University of Technology (GDUT); 100 Waihuan Xi road 510006 Guangzhou Panyu District P. R. China
- Higher Education Mega Center; Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
| | - Michel Nguyen
- Higher Education Mega Center; Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Higher Education Mega Center; Université de Toulouse; 31077 France
| | - Yan Liu
- School of Chemical Engineering and Light Industry; Higher Education Mega Center; Guangdong University of Technology (GDUT); 100 Waihuan Xi road 510006 Guangzhou Panyu District P. R. China
| | - Anne Robert
- Higher Education Mega Center; Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Higher Education Mega Center; Université de Toulouse; 31077 France
| | - Bernard Meunier
- School of Chemical Engineering and Light Industry; Higher Education Mega Center; Guangdong University of Technology (GDUT); 100 Waihuan Xi road 510006 Guangzhou Panyu District P. R. China
- Higher Education Mega Center; Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS); 205 route de Narbonne, BP 44099 31077 Toulouse cedex 4 France
- Higher Education Mega Center; Université de Toulouse; 31077 France
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37
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Dereven’kov IA, Makarov SV. Mechanistic studies on the reaction between glutathionylcobalamin and selenocysteine. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1570166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ilia A. Dereven’kov
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
| | - Sergei V. Makarov
- Institute of Macroheterocyclic Compounds, Ivanovo State University of Chemistry and Technology, Ivanovo, Russian Federation
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Kielmann M, Senge MO. Molecular Engineering of Free-Base Porphyrins as Ligands-The N-H⋅⋅⋅X Binding Motif in Tetrapyrroles. Angew Chem Int Ed Engl 2019; 58:418-441. [PMID: 30067890 PMCID: PMC6391963 DOI: 10.1002/anie.201806281] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Indexed: 12/15/2022]
Abstract
The core N-H units of planar porphyrins are often inaccessible to forming hydrogen-bonding complexes with acceptor molecules. This is due to the fact that the amine moieties are "shielded" by the macrocyclic system, impeding the formation of intermolecular H-bonds. However, methods exist to modulate the tetrapyrrole conformations and to reshape the vector of N-H orientation outwards, thus increasing their availability and reactivity. Strategies include the use of porpho(di)methenes and phlorins (calixphyrins), as well as saddle-distorted porphyrins. The former form cavities due to interruption of the aromatic system. The latter are highly basic systems and capable of binding anions and neutral molecules via N-H⋅⋅⋅X-type H-bonds. This Review discusses the role of porphyrin(oid) ligands in various coordination-type complexes, means to access the core for hydrogen bonding, the concept of conformational control, and emerging applications, such as organocatalysis and sensors.
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Affiliation(s)
- Marc Kielmann
- School of ChemistrySFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin 2Ireland
| | - Mathias O. Senge
- School of ChemistrySFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences InstituteTrinity College DublinThe University of Dublin152–160 Pearse StreetDublin 2Ireland
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39
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Zhang Y, Ying H, Xu Y. Comparative genomics and metagenomics of the metallomes. Metallomics 2019; 11:1026-1043. [DOI: 10.1039/c9mt00023b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent achievements and advances in comparative genomic and metagenomic analyses of trace metals were reviewed and discussed.
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Affiliation(s)
- Yan Zhang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology
- College of Life Sciences and Oceanography
- Shenzhen University
- Shenzhen
- P. R. China
| | - Huimin Ying
- Department of Endocrinology
- Hangzhou Xixi Hospital
- Hangzhou
- P. R. China
| | - Yinzhen Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology
- College of Life Sciences and Oceanography
- Shenzhen University
- Shenzhen
- P. R. China
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40
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Wierzba AJ, Maximova K, Wincenciuk A, Równicki M, Wojciechowska M, Nexø E, Trylska J, Gryko D. Does a Conjugation Site Affect Transport of Vitamin B 12 -Peptide Nucleic Acid Conjugates into Bacterial Cells? Chemistry 2018; 24:18772-18778. [PMID: 30286265 DOI: 10.1002/chem.201804304] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Indexed: 12/14/2022]
Abstract
Gram-negative bacteria develop specific systems for the uptake of scarce nutrients, including vitamin B12 . These uptake pathways may be utilized for the delivery of biologically relevant molecules into cells. Indeed, it was recently reported that vitamin B12 transported an antisense peptide nucleic acid (PNA) into Escherichia coli and Salmonella Typhimurium cells. The present studies indicate that the conjugation site of PNA to vitamin B12 has an impact on PNA transport into bacterial cells. Toward this end, a specifically designed PNA oligomer has been tethered at various positions of vitamin B12 (central Co, R5' -OH, c and e amide chains, meso position, and at the hydroxy group of cobinamide) by using known or newly developed methodologies and tested for the uptake of the synthesized conjugates by E. coli. Compounds in which the PNA oligonucleotide was anchored at the R5' -OH position were transported more efficiently than that of other compounds tethered at the peripheral positions around the corrin ring. Of importance is the fact that, contrary to mammalian organisms, E. coli also takes up cobinamide, which is an incomplete corrinoid. This selectivity opens up ways to fight bacterial infections.
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Affiliation(s)
- Aleksandra J Wierzba
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Ksenia Maximova
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland
| | - Aleksandra Wincenciuk
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Marcin Równicki
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland.,College of Inter-Faculty Individual Studies in Mathematics, and Natural Sciences, Banacha 2c, 02-097, Warsaw, Poland
| | - Monika Wojciechowska
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland
| | - Ebba Nexø
- Department of Clinical Biochemistry, Aarhus University Hospital, PalleJuul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Joanna Trylska
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097, Warsaw, Poland
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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41
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Kielmann M, Senge MO. Molekulares Engineering freier Porphyrinbasen als Liganden - das N-H⋅⋅⋅X-Bindungsmotiv in Tetrapyrrolen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806281] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Marc Kielmann
- School of Chemistry; SFI Tetrapyrrole Laboratory; Trinity Biomedical Sciences Institute; Trinity College Dublin; The University of Dublin; 152-160 Pearse Street Dublin 2 Irland
| | - Mathias O. Senge
- School of Chemistry; SFI Tetrapyrrole Laboratory; Trinity Biomedical Sciences Institute; Trinity College Dublin; The University of Dublin; 152-160 Pearse Street Dublin 2 Irland
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Dereven’kov IA, Shpagilev NI, Makarov SV. Mechanism of the Reaction between Cobalamin(II) and Periodate. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418110080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Tahara K, Pan L, Ono T, Hisaeda Y. Learning from B 12 enzymes: biomimetic and bioinspired catalysts for eco-friendly organic synthesis. Beilstein J Org Chem 2018; 14:2553-2567. [PMID: 30410616 PMCID: PMC6204771 DOI: 10.3762/bjoc.14.232] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 09/13/2018] [Indexed: 01/12/2023] Open
Abstract
Cobalamins (B12) play various important roles in vivo. Most B12-dependent enzymes are divided into three main subfamilies: adenosylcobalamin-dependent isomerases, methylcobalamin-dependent methyltransferases, and dehalogenases. Mimicking these B12 enzyme functions under non-enzymatic conditions offers good understanding of their elaborate reaction mechanisms. Furthermore, bio-inspiration offers a new approach to catalytic design for green and eco-friendly molecular transformations. As part of a study based on vitamin B12 derivatives including heptamethyl cobyrinate perchlorate, we describe biomimetic and bioinspired catalytic reactions with B12 enzyme functions. The reactions are classified according to the corresponding three B12 enzyme subfamilies, with a focus on our recent development on electrochemical and photochemical catalytic systems. Other important reactions are also described, with a focus on radical-involved reactions in terms of organic synthesis.
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Affiliation(s)
- Keishiro Tahara
- Department of Material Science, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako 678-1297, Japan
| | - Ling Pan
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Toshikazu Ono
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University, Fukuoka 819-0395, Japan.,PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Yoshio Hisaeda
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University, Fukuoka 819-0395, Japan
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Wierzba AJ, Wincenciuk A, Karczewski M, Vullev VI, Gryko D. meso
‐Modified Cobalamins: Synthesis, Structure, and Properties. Chemistry 2018; 24:10344-10356. [DOI: 10.1002/chem.201801807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Aleksandra J. Wierzba
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Aleksandra Wincenciuk
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
- Department of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Maksymilian Karczewski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Valentine I. Vullev
- Bioengineering, Chemistry, Biochemistry, and Materials Science and Engineering University of California, Riverside Materials Science and Engineering Building, Room 235 Riverside CA 92521 USA
| | - Dorota Gryko
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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Dereven'kov IA, Makarov SV, Bui Thi TT, Makarova AS, Koifman OI. Studies on the Reduction of Dehydroascorbic Acid by Glutathione in the Presence of Aquahydroxocobinamide. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ilia A. Dereven'kov
- Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Sergei V. Makarov
- Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Thu Thuy Bui Thi
- Faculty of Chemical Engineering; Industrial University of Ho Chi Minh city; 12 Nguyen Van Bao, ward 4, Go Vap district 727010 Ho Chi Minh City Vietnam
| | - Anna S. Makarova
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences; Academicheskaya str. 1 153045 Ivanovo Russian Federation
| | - Oskar I. Koifman
- Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences; Academicheskaya str. 1 153045 Ivanovo Russian Federation
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Salnikov DS, Makarov SV, Ivlev PA. Comparative Study of Redox Reactions of Aqua- and Thiocyanatocobalamin. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218050201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
The biosynthesis of B12, involving up to 30 different enzyme-mediated steps, only occurs in bacteria. Thus, most eukaryotes require an external source of B12, and yet the vitamin appears to have only two functions in eukaryotes: as a cofactor for the enzymes methionine synthase and methylmalonylCoA mutase. These two functions are crucial for normal health in humans, and in particular, the formation of methionine is essential for providing methyl groups for over 100 methylation processes. Interference with the methionine synthase reaction not only depletes the body of methyl groups but also leads to the accumulation of homocysteine, a risk factor for many diseases. The syndrome pernicious anemia, characterized by lack of intrinsic factor, leads to a severe, sometimes fatal form of B12 deficiency. However, there is no sharp cutoff for B12 deficiency; rather, there is a continuous inverse relationship between serum B12 and a variety of undesirable outcomes, including neural tube defects, stroke, and dementia. The brain is particularly vulnerable; in children, inadequate B12 stunts brain and intellectual development. Suboptimal B12 status (serum B12<300pmol/L) is very common, occurring in 30%-60% of the population, in particular in pregnant women and in less-developed countries. Thus, many tens of millions of people in the world may suffer harm from having a poor B12 status. Public health steps are urgently needed to correct this inadequacy.
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Affiliation(s)
- A David Smith
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom.
| | - Martin J Warren
- School of Biosciences, University of Kent, Canterbury, Kent, United Kingdom
| | - Helga Refsum
- Department of Nutrition, University of Oslo, Oslo, Norway
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Dereven'kov IA, Polyakova AY, Makarov SV. Kinetic and Mechanistic Studies on the Reaction between Aquacobalamin and Selenocysteine. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700973] [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)
- Ilia A. Dereven'kov
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Anastasiya Yu. Polyakova
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Sergei V. Makarov
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
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Microbial Metabolic Networks at the Mucus Layer Lead to Diet-Independent Butyrate and Vitamin B 12 Production by Intestinal Symbionts. mBio 2017; 8:mBio.00770-17. [PMID: 28928206 PMCID: PMC5605934 DOI: 10.1128/mbio.00770-17] [Citation(s) in RCA: 208] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Akkermansia muciniphila has evolved to specialize in the degradation and utilization of host mucus, which it may use as the sole source of carbon and nitrogen. Mucus degradation and fermentation by A. muciniphila are known to result in the liberation of oligosaccharides and subsequent production of acetate, which becomes directly available to microorganisms in the vicinity of the intestinal mucosa. Coculturing experiments of A. muciniphila with non-mucus-degrading butyrate-producing bacteria Anaerostipes caccae, Eubacterium hallii, and Faecalibacterium prausnitzii resulted in syntrophic growth and production of butyrate. In addition, we demonstrate that the production of pseudovitamin B12 by E. hallii results in production of propionate by A. muciniphila, which suggests that this syntrophy is indeed bidirectional. These data are proof of concept for syntrophic and other symbiotic microbe-microbe interactions at the intestinal mucosal interface. The observed metabolic interactions between A. muciniphila and butyrogenic bacterial taxa support the existence of colonic vitamin and butyrate production pathways that are dependent on host glycan production and independent of dietary carbohydrates. We infer that the intestinal symbiont A. muciniphila can indirectly stimulate intestinal butyrate levels in the vicinity of the intestinal epithelial cells with potential health benefits to the host. The intestinal microbiota is said to be a stable ecosystem where many networks between microorganisms are formed. Here we present a proof of principle study of microbial interaction at the intestinal mucus layer. We show that indigestible oligosaccharide chains within mucus become available for a broad range of intestinal microbes after degradation and liberation of sugars by the species Akkermansia muciniphila. This leads to the microbial synthesis of vitamin B12, 1,2-propanediol, propionate, and butyrate, which are beneficial to the microbial ecosystem and host epithelial cells.
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Dereven’kov IA, Makarov SV, Shpagilev NI, Salnikov DS, Koifman OI. Studies on reaction of glutathionylcobalamin with hypochlorite. Evidence of protective action of glutathionyl-ligand against corrin modification by hypochlorite. Biometals 2017; 30:757-764. [DOI: 10.1007/s10534-017-0044-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 08/18/2017] [Indexed: 12/14/2022]
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