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Hesamian MS, Eskandari N. Potential Role of Trace Elements (Al, Cu, Zn, and Se) in Multiple Sclerosis Physiopathology. Neuroimmunomodulation 2020; 27:163-177. [PMID: 33691322 DOI: 10.1159/000511308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/29/2020] [Indexed: 11/19/2022] Open
Abstract
Multiple sclerosis (MS) is an unpredictable disease of the central nervous system. The cause of MS is not known completely, and pathology is specified by involved demyelinated areas in the white and gray matter of the brain and spinal cord. Inflammation and peripheral tolerance breakdown due to Treg cell defects and/or effector cell resistance are present at all stages of the disease. Several invading peripheral immune cells are included in the process of the disease such as macrophages, CD8+ T cells, CD4+ T cells, B cells, and plasma cells. Trace elements are known as elements found in soil, plants, and living organisms in small quantities. Some of them (e.g., Al, Cu, Zn, Mn, and Se) are essential for the body's functions like catalysts in enzyme systems, energy metabolism, etc. Al toxicity and Cu, Zn, and Se toxicity and deficiency can affect the immune system and following neuron inflammation and degeneration. These processes may result in MS pathology. Of course, factors such as lifestyle, environment, and industrialization can affect levels of trace elements in the human body.
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Affiliation(s)
- Mohammad Sadegh Hesamian
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nahid Eskandari
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran,
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252
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Wiesmann N, Tremel W, Brieger J. Zinc oxide nanoparticles for therapeutic purposes in cancer medicine. J Mater Chem B 2020; 8:4973-4989. [DOI: 10.1039/d0tb00739k] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Zinc oxide nanoparticles are characterized by a good biocompatibility while providing a versatile potential as innovative therapeutic agents in cancer medicine.
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Affiliation(s)
- Nadine Wiesmann
- Department of Otorhinolaryngology, Head and Neck Surgery
- University Medical Centre of the Johannes Gutenberg-University
- Laboratory for Molecular Tumor Biology
- 55131 Mainz
- Germany
| | - Wolfgang Tremel
- Department of Chemistry
- Johannes Gutenberg-University
- 55128 Mainz
- Germany
| | - Juergen Brieger
- Department of Otorhinolaryngology, Head and Neck Surgery
- University Medical Centre of the Johannes Gutenberg-University
- Laboratory for Molecular Tumor Biology
- 55131 Mainz
- Germany
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253
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Podjed N, Stare P, Korošec RC, Alcaide MM, López-Serrano J, Modec B. 3-Amino-1-propanol and N-methylaminoethanol: coordination to zinc( ii) vs. decomposition to ammonia. NEW J CHEM 2020. [DOI: 10.1039/c9nj05005a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The coordination of amino alcohols 3-amino-1-propanol and N-methylaminoethanol to zinc(ii) and their decomposition to ammonia were investigated.
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Affiliation(s)
- Nina Podjed
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
| | - Petra Stare
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
| | - Romana Cerc Korošec
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
| | - María M. Alcaide
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Barbara Modec
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
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254
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Amin N, Clark CCT, Taghizadeh M, Djafarnejad S. Zinc supplements and bone health: The role of the RANKL-RANK axis as a therapeutic target. J Trace Elem Med Biol 2020; 57:126417. [PMID: 31653549 DOI: 10.1016/j.jtemb.2019.126417] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/20/2019] [Accepted: 10/05/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND To this day, empirical data suggests that zinc has important roles in matrix synthesis, bone turnover, and mineralization and its beneficial effects on bone could be mediated through different mechanisms. The influence of zinc on bone turnover could be facilitated via regulating RANKL/RANK/OPG pathway in bone tissue. Therefore, the aim of the study was to conduct a review to investigate the possible effect of the zinc mediated bone remodeling via RANKL/RANK/OPG pathway. METHODS A comprehensive systematic search was performed in MEDLINE/PubMed, Cochrane Library, SCOPUS, and Google Scholar to explore the studies investigating the effect of zinc as a bone remodeling factor via RANKL/RANK/OPG pathway regulation. Subsequently, the details of the pathway and the impact of zinc supplements on RANKL/RANK/OPG pathway regulation were discussed. RESULTS The pathway could play an important role in bone remodeling and any imbalance between RANKL/RANK/OPG components could lead to extreme bone resorption. Although the outcomes of some studies are equivocal, it is evident that zinc possesses protective properties against bone loss by regulating the RANKL/RANK/OPG pathway. There are several experiments where zinc supplementation resulted in upregulation of OPG expression or decreases RANKL level. However, the results of some studies oppose this. CONCLUSION It is likely that sufficient zinc intake will elicit positive effects on bone health by RANKL/RANK/OPG regulation. Although the outcomes of a few studies are equivocal, it seems that zinc can exert the protective properties against bone loss by suppressing osteoclastogenesis via downregulation of RANKL/RANK. Additionally, there are several experiments where zinc supplementation resulted in upregulation of OPG expression. However, the results of limited studies oppose this. Therefore, aside from the positive role zinc possesses in preserving bone mass, further effects of zinc in RANKL/RANK/OPG system requires further animal/human studies.
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Affiliation(s)
- Negin Amin
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Cain C T Clark
- Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom
| | - Mohsen Taghizadeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Sadegh Djafarnejad
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
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255
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Zhang YN, Wang S, Li KC, Ruan D, Chen W, Xia WG, Wang SL, Abouelezz KFM, Zheng CT. Estimation of dietary zinc requirement for laying duck breeders: effects on productive and reproductive performance, egg quality, tibial characteristics, plasma biochemical and antioxidant indices, and zinc deposition. Poult Sci 2019; 99:454-462. [PMID: 32416830 PMCID: PMC7587828 DOI: 10.3382/ps/pez530] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/31/2019] [Indexed: 01/05/2023] Open
Abstract
This study evaluated the effects of different dietary zinc (Zn) levels on productive and reproductive performance, egg quality, tibial characteristics, plasma biochemical and antioxidant indices, and zinc deposition in laying duck breeders. A total of 504 Longyan duck breeders aged 21 wk were randomly allocated to 6 treatments and fed a basal diet (Zn, 27.7 mg/kg) or that basal diet supplemented with Zn (as ZnSO4·H2 O) at 10, 20, 40, 80, or 160 mg Zn per kg of feed for 20 wk. Each group had 6 replicates of 14 ducks each. Dietary Zn supplementation affected (P < 0.05) the egg production, FCR, and shell thickness of laying duck breeders from 21 to 40 wk, and there was a quadratic (P < 0.05) effect between them. Dietary Zn supplementation affected (P < 0.05) and quadratically (P < 0.001) increased the breaking strength, density, and dry defatted weight of tibias. Alkaline phosphatase, calcium, phosphorus, total superoxide dismutase, glutathione peroxidase (GSH-Px), and malondialdehyde (MDA) activities or content in plasma were affected (P < 0.05), and quadratically (P < 0.01) changed by dietary Zn levels. Dietary Zn supplementation affected (P < 0.01) and increased the Zn deposition in egg yolk (linear, P < 0.05; quadratic, P < 0.001) and tibia (linear, P < 0.05). The dietary Zn requirements, in mg/kg for a basal diet containing 27.7 mg/kg Zn, for Longyan duck breeders from 21 to 40 wk of age were estimated to be 65.4 for optimizing egg production, 68.6 for FCR, 102 for hatchling BW, 94.7 for eggshell thickness, 77.2 for tibial breaking strength, 81.4 for tibial density, 78.9 for tibial dry defatted weight, 69.5 for plasma GSH-Px activity, 72.4 for plasma MDA content, and 94.6 for Zn content in tibia. Overall, dietary Zn supplementation, up to 160 mg/kg feed, affected the productive performance, eggshell thickness, tibial characteristics, plasma antioxidant status, and Zn deposition of layer duck breeders. Supplementing this basal diet (27.7 mg/kg Zn) with 70 to 80 mg/kg additional Zn was adequate for laying duck breeders during the laying period.
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Affiliation(s)
- Y N Zhang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - S Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - K C Li
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - D Ruan
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - W Chen
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - W G Xia
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - S L Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China
| | - K F M Abouelezz
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China; Department of Poultry Production, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt
| | - C T Zheng
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, 510640, Guangzhou, China.
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256
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Hastuti AAMB, Costas-Rodríguez M, Anoshkina Y, Parnall T, Madura JA, Vanhaecke F. High-precision isotopic analysis of serum and whole blood Cu, Fe and Zn to assess possible homeostasis alterations due to bariatric surgery. Anal Bioanal Chem 2019; 412:727-738. [PMID: 31836925 DOI: 10.1007/s00216-019-02291-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/02/2019] [Accepted: 11/18/2019] [Indexed: 12/13/2022]
Abstract
Bariatric surgery is an effective procedure to achieve weight loss in obese patients. However, homeostasis of essential metals may be disrupted as the main absorption site is bypassed. In this study, we determined Cu, Fe and Zn isotopic compositions in paired serum and whole blood samples of patients who underwent Roux-en-Y gastric bypass (RYGB) surgery for evaluation of longitudinal changes and their potential relation to mineral element concentrations and relevant clinical parameters used for monitoring the patient's condition. Samples from eight patients were collected pre-surgery and at 3, 6 and 12 months post-surgery. Multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) was used for high-precision isotope ratio measurements. Alterations in metal homeostasis related to bariatric surgery were reflected in the serum and whole blood Cu, Fe and Zn isotopic compositions. The serum and whole blood Cu became isotopically lighter (lower δ65Cu values) after bariatric surgery, reaching statistical significance at 6 months post-surgery (p < 0.05). The difference between the serum and the whole blood Zn isotopic composition increased after surgery, reaching significance from 6 months post-surgery onwards (p < 0.05). Those changes in Cu, Fe and Zn isotopic compositions were not accompanied by similar changes in their respective concentrations, making isotopic analysis more sensitive to physiological changes than elemental content. Furthermore, the Zn isotopic composition correlates with blood glycaemic and lipid parameters, while the Fe isotopic composition correlates with glycaemic parameters. Graphical Abstract.
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Affiliation(s)
- Agustina A M B Hastuti
- Department of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281 - S12, 9000, Ghent, Belgium
| | - Marta Costas-Rodríguez
- Department of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281 - S12, 9000, Ghent, Belgium
| | - Yulia Anoshkina
- Department of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281 - S12, 9000, Ghent, Belgium
| | - Taylor Parnall
- Department of General Surgery, Mayo Clinic, 5779 E Mayo Blvd, Phoenix, AZ, 85054, USA
| | - James A Madura
- Department of General Surgery, Mayo Clinic, 5779 E Mayo Blvd, Phoenix, AZ, 85054, USA
| | - Frank Vanhaecke
- Department of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Campus Sterre, Krijgslaan 281 - S12, 9000, Ghent, Belgium.
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257
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Anchordoquy JM, Anchordoquy JP, Galarza EM, Farnetano NA, Giuliodori MJ, Nikoloff N, Fazzio LE, Furnus CC. Parenteral Zinc Supplementation Increases Pregnancy Rates in Beef Cows. Biol Trace Elem Res 2019; 192:175-182. [PMID: 30723881 DOI: 10.1007/s12011-019-1651-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/22/2019] [Indexed: 11/26/2022]
Abstract
Zinc (Zn) is required for normal reproductive performance in cattle. The aim of this study was to evaluate the effect of subcutaneous injection of 400 mg Zn at the beginning of fixed-time artificial insemination (FTAI) on preovulatory follicle and corpus luteum (CL) size, plasma estradiol (E2) and progesterone (P4) concentrations, and pregnancy rates in beef cows. Copper (Cu) concentration and alkaline phosphatase (ALP) activity in plasma were also evaluated. Zinc supplementation at the beginning of the FTAI protocol (day 0) increased the area of preovulatory follicle (APF, day 9; P = 0.042) and plasma P4 concentration (day 16; P = 0.01), whereas plasma E2 concentration (day 9) and area of CL (ACL; day 16) were not modified by Zn supplementation in cows with adequate plasma Zn concentration. Zinc supplementation in Zn-deficient cows increased ACL with respect to controls (P = 0.048) but did not modify plasma E2 concentration. Pregnancy rate on day 41 after FTAI was higher in cows supplemented with Zn compared with controls (80.95% and 51.61%, respectively; P = 0.042). Plasma Zn and Cu concentrations on days 7, 9, and 16 were not affected by Zn supplementation. In conclusion, the results obtained in the present study determined that parenteral Zn supplementation at the beginning of the FTAI protocol increased preovulatory follicle size, plasma P4 concentration, and pregnancy rates in beef cows.
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Affiliation(s)
- J M Anchordoquy
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
- Cátedra de Fisiología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - J P Anchordoquy
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
- Cátedra de Fisiología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - E M Galarza
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
- Cátedra de Fisiología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - N A Farnetano
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - M J Giuliodori
- Cátedra de Fisiología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - N Nikoloff
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina
| | - L E Fazzio
- Laboratorio de Nutrición Mineral, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 60 y 118, 1900, La Plata, Argentina
| | - C C Furnus
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, calle 60 y 118 s/n, CP 1900, La Plata, Buenos Aires, Argentina.
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258
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Abstract
We herein describe the design and synthesis of a catalytically active peptide–gold nanoparticle conjugate (Pep-Au-NP) that binds Zn(II) within its peptide monolayer and develops carbonic anhydrase activity. Specifically, a modified variant of the β-sheet forming IHIHIQI-peptide (IHQ), which forms an interstrand 3-His Zn(II)-binding site, was used as a ligand for spherical gold nanoparticles (Au-NPs). The resulting immobilized peptide maintains its ability to form β-sheets, as determined by circular dichroism (CD)-spectroscopy and, thus, maintains its ability to form Zn(II)-binding sites. The addition of Zn(II)-ions to the peptide–gold nanoparticle conjugates (Au@IHQ-NP) resulted in significant improvements in rates of ester hydrolysis of 4-nitrophenyl acetate (4-NPA) and the hydration of CO2 compared to the unconjugated peptide variants. Recycling of the catalyst revealed that Au@IHQ-NP remains intact with at least 94% of its initial activity after five rounds of CO2 hydration. The herein reported results reveal that Pep-Au-NPs are able to perform reactions catalyzed by natural metalloenzymes and open up new possibilities for the implementation of these conjugates.
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259
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Su Y, Wang K, Gao J, Yang Y, Qin YX, Zheng Y, Zhu D. Enhanced cytocompatibility and antibacterial property of zinc phosphate coating on biodegradable zinc materials. Acta Biomater 2019; 98:174-185. [PMID: 30930304 PMCID: PMC6766429 DOI: 10.1016/j.actbio.2019.03.055] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 02/07/2023]
Abstract
Zinc (Zn) has recently emerged as a promising biodegradable metal thanks to its critical physiological roles and promising degradation behavior. However, cytocompatibility and antibacterial property of Zn is still suboptimal, in part, due to the excessive Zn ions released during degradation. Inspired by the calcium phosphate-based minerals in natural bone tissue, zinc phosphate (ZnP) coatings were prepared on pure Zn using a chemical conversion method in this study. The coating morphology was then optimized through controlling the pH of coating solution, resulting in a homogeneous micro-/nano-ZnP coating structure. The ZnP coating significantly increased the cell viability, adhesion, and differentiation of pre-osteoblasts and vascular endothelial cells, while significantly reduced the adhesion of the platelets and E. coli. Additionally, ZnP coating significantly reduced the Zn ion release from the bulk material during degradation process, resulting in a much lower Zn2+ concentration and pH change in the surrounding environment. The improved hemocompatibility, cytocompatibility and antibacterial performance of ZnP coated Zn biomaterials could be mainly attributed to the controlled Zn ion release and micro-/nano-scaled coating structure. Taken together, ZnP coating on Zn-based biomaterial appears to be a viable approach to enhance its biocompatibility and antibacterial property as well as to control its degradation rate. Statement of Significance Zn and its alloys are promising biodegradable implant materials for orthopedic and cardiovascular applications. However, notable cytotoxicity has been reported due to degradation products accumulated in the local environment, largely overdosed Zn2+. Thus, controlling burst Zn2+ release is the key to minimize the toxicity of Zn implants. To achieve this goal, we prepared a homogenous ZnP coating on Zn metals thanks to its easy synthesis, stable chemical property, and good biocompatibility. Results showed that ZnP not only improved the cell viability, adhesion and proliferation, but also significantly reduced the attachment of platelet and bacterial. Therefore, ZnP could be a promising approach to improve the functional performance of Zn-based implants, and potentially be applied to many other medical implants.
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Affiliation(s)
- Yingchao Su
- Department of Biomedical Engineering, University of North Texas, TX, USA
| | - Kai Wang
- Department of Biomedical Engineering, University of North Texas, TX, USA
| | - Julia Gao
- Department of Biomedical Engineering, University of North Texas, TX, USA
| | - Yong Yang
- Department of Biomedical Engineering, University of North Texas, TX, USA
| | - Yi-Xian Qin
- Department of Biomedical Engineering, Stony Brook University, New York, USA
| | - Yufeng Zheng
- Department of Materials Science and Engineering, Peking University, Beijing, China
| | - Donghui Zhu
- Department of Biomedical Engineering, University of North Texas, TX, USA.
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260
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Coverdale JPC, Barnett JP, Adamu AH, Griffiths EJ, Stewart AJ, Blindauer CA. A metalloproteomic analysis of interactions between plasma proteins and zinc: elevated fatty acid levels affect zinc distribution. Metallomics 2019; 11:1805-1819. [PMID: 31612889 DOI: 10.1039/c9mt00177h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Serum albumin is a highly abundant plasma protein associated with the transport of metal ions, pharmaceuticals, fatty acids and a variety of small molecules in the blood. Once thought of as a molecular 'sponge', mounting evidence suggests that the albumin-facilitated transport of chemically diverse entities is not independent. One such example is the transport of Zn2+ ions and non-esterified 'free' fatty acids (FFAs) by albumin, both of which bind at high affinity sites located in close proximity. Our previous research suggests that their transport in blood plasma is linked via an allosteric mechanism on serum albumin. In direct competition, albumin-bound FFAs significantly decrease the binding capacity of albumin for Zn2+, with one of the predicted consequences being a change in plasma/serum zinc speciation. Using liquid chromatography (LC), ICP-MS and fluorescence assays, our work provides a quantitative assessment of this phenomenon, and finds that in the presence of high FFA concentrations encountered in various physiological conditions, a significant proportion of albumin-bound Zn2+ is re-distributed amongst plasma/serum proteins. Using peptide mass fingerprinting and immunodetection, we identify candidate acceptor proteins for Zn2+ liberated from albumin. These include histidine-rich glycoprotein (HRG), a multifunctional protein associated with the regulation of blood coagulation, and members of the complement system involved in the innate immune response. Our findings highlight how FFA-mediated changes in extracellular metal speciation might contribute to the progression of certain pathological conditions.
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Affiliation(s)
| | - James P Barnett
- Department of Life Sciences, Birmingham City University, Edgbaston, B15 3TN, UK
| | - Adamu H Adamu
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
| | - Ellie J Griffiths
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
| | - Alan J Stewart
- School of Medicine, University of St Andrews, St Andrews, KY16 9TF, UK
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261
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Hernández-Escobar D, Champagne S, Yilmazer H, Dikici B, Boehlert CJ, Hermawan H. Current status and perspectives of zinc-based absorbable alloys for biomedical applications. Acta Biomater 2019; 97:1-22. [PMID: 31351253 DOI: 10.1016/j.actbio.2019.07.034] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/01/2019] [Accepted: 07/19/2019] [Indexed: 12/22/2022]
Abstract
Absorbable metals have the potential to serve as the next generation of temporary medical implant devices by safely dissolving in the human body upon vascular tissue healing and bone regeneration. Their implementation in the market could greatly reduce the need of costly and risky additional surgeries for either implant replacement or removal, often required in current permanent implants. Despite the extensive research done over the last two decades on magnesium (Mg) and iron (Fe) based alloys, they have not generally shown a satisfactory combination of mechanical properties, biocompatibility and controlled degradation rate in the physiological environment. Consequently, zinc (Zn) based alloys were introduced in the last few years as alternative materials to overcome the limitations of Fe and Mg-based alloys. The blend of different alloying elements and processing conditions have led to a wide variety of Zn-based alloys having tunable mechanical properties and corrosion rates. This review provides the most recent progress in the development of absorbable Zn-based alloys for biomedical implant applications, primarily for cardiovascular and orthopedic devices. Their biocompatibility, processability and metallurgical aspects, as well as their mechanical behavior and corrosion properties are presented and discussed, including their opportunities, limitations and future research directions. STATEMENT OF SIGNIFICANCE: Temporary orthopedic bioimplants have become increasingly popular as they offer an alternative to prevent complications, like infections or secondary surgeries, often related to the implantation of permanent devices. Iron and magnesium alloys were extensively studied as candidates for absorbable medical applications, but they generally failed to provide a desirable mechanical performance and corrosion characteristics in the physiological environment. Zinc was introduced in the last decade as a potential implant material after showing outstanding biocompatibility and biodegradability. This review summarizes the research advances to date and provides a thorough discussion of the future challenges of absorbable zinc alloys to satisfy the demanding clinical benchmarks for absorbable medical applications. Their biocompatibility, mechanical, and corrosion aspects, both in vitro and in vivo, are comprehensively reviewed and assessed accordingly.
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262
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Brangulis K, Akopjana I, Petrovskis I, Kazaks A, Jekabsons A, Jaudzems K, Viksna A, Bertins M, Tars K. Structural analysis of Borrelia burgdorferi periplasmic lipoprotein BB0365 involved in Lyme disease infection. FEBS Lett 2019; 594:317-326. [PMID: 31486526 DOI: 10.1002/1873-3468.13594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/15/2019] [Accepted: 08/28/2019] [Indexed: 11/07/2022]
Abstract
The periplasmic lipoprotein BB0365 of the Lyme disease agent Borrelia burgdorferi is expressed throughout mammalian infection and is essential for all phases of Lyme disease infection; its function, however, remains unknown. In the current study, our structural analysis of BB0365 revealed the same structural fold as that found in the NqrC and RnfG subunits of the NADH:quinone and ferredoxin:NAD+ sodium-translocating oxidoreductase complexes, which points to a potential role for BB0365 as a component of the sodium pump. Additionally, BB0365 coordinated Zn2+ by the His51, His55, His140 residues, and the Zn2+ -binding site indicates that BB0365 could act as a potential metalloenzyme; therefore, this structure narrows down the potential functions of BB0365, an essential protein for B. burgdorferi to cause Lyme disease.
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Affiliation(s)
| | - Inara Akopjana
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | | | - Andris Kazaks
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | | | - Kristaps Jaudzems
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Chemistry, University of Latvia, Riga, Latvia
| | - Arturs Viksna
- Faculty of Chemistry, University of Latvia, Riga, Latvia
| | - Maris Bertins
- Faculty of Chemistry, University of Latvia, Riga, Latvia
| | - Kaspars Tars
- Latvian Biomedical Research and Study Centre, Riga, Latvia.,Faculty of Biology, University of Latvia, Riga, Latvia
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263
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Sharma A, Sharma D, Verma SK. Zinc binding proteome of a phytopathogen Xanthomonas translucens pv. undulosa. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190369. [PMID: 31598288 PMCID: PMC6774946 DOI: 10.1098/rsos.190369] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 08/21/2019] [Indexed: 05/15/2023]
Abstract
Xanthomonas translucens pv. undulosa (Xtu) is a proteobacteria which causes bacterial leaf streak (BLS) or bacterial chaff disease in wheat and barley. The constant competition for zinc (Zn) metal nutrients contributes significantly in plant-pathogen interactions. In this study, we have employed a systematic in silico approach to study the Zn-binding proteins of Xtu. From the whole proteome of Xtu, we have identified approximately 7.9% of proteins having Zn-binding sequence and structural motifs. Further, 115 proteins were found homologous to plant-pathogen interaction database. Among these 115 proteins, 11 were predicted as putative secretory proteins. The functional diversity in Zn-binding proteins was revealed by functional domain, gene ontology and subcellular localization analysis. The roles of Zn-binding proteins were found to be varied in the range from metabolism, proteolysis, protein biosynthesis, transport, cell signalling, protein folding, transcription regulation, DNA repair, response to oxidative stress, RNA processing, antimicrobial resistance, DNA replication and DNA integration. This study provides preliminary information on putative Zn-binding proteins of Xtu which may further help in designing new metal-based antimicrobial agents for controlling BLS and bacterial chaff infections on staple crops.
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264
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Cortés-Montero E, Rodríguez-Muñoz M, Sánchez-Blázquez P, Garzón J. The Axonal Motor Neuropathy-Related HINT1 Protein Is a Zinc- and Calmodulin-Regulated Cysteine SUMO Protease. Antioxid Redox Signal 2019; 31:503-520. [PMID: 31088288 PMCID: PMC6648240 DOI: 10.1089/ars.2019.7724] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Aims: Histidine triad nucleotide-binding protein 1 (HINT1) exhibits proapoptotic and tumor-suppressive activity. HINT1 binds to transcription factors such as teneurin1 and to the regulator of G protein signaling 17 (RGS) (Z2) protein, which incorporates the small ubiquitin-like modifier (SUMO), and is implicated in several types of cancer. HINT1 interacts with proteins such as PKCγ and Raf-1 through zinc ions provided by the cysteine-rich domain of RGSZ2 and the coupled neural nitric oxide synthase (nNOS). Recently, a series of HINT1 mutants have been reported to cause human autosomal recessive axonal neuropathy with neuromyotonia (ARAN-NM). However, the specific alteration in the function of HINT1 induced by these mutants remains to be elucidated. Because sumoylation modifies protein association and transcriptional regulation, we investigated whether HINT1 exhibits zinc- and redox-regulated sumoylase activity, which may be altered in those mutants. Results: HINT1 exhibits cysteine protease activity to remove SUMO from a variety of signaling proteins. HINT1 sumoylase activity is blocked by zinc, and it is released by nitric oxide or calcium-activated calmodulin (CaM). HINT1 contains a SUMO-interacting motif (110-116 HIHLHVL) and the catalytic triad Cys84-Asp87-His114 in the C-terminal region. Thus, zinc probably provided by the RGSZ2-nNOS complex may bind to Cys84 to block HINT1 isopeptidase activity. Innovation: To date, HINT1 is the only sumoylase that is regulated by two alternate pathways, redox- and calcium-activated CaM. Conclusion: The 15 human HINT1 mutants reported to cause ARAN-NM exhibited altered sumoylase activity, which may contribute to the onset of this human motor disease.
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Affiliation(s)
- Elsa Cortés-Montero
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - María Rodríguez-Muñoz
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Pilar Sánchez-Blázquez
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Javier Garzón
- Neuropharmacology, Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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265
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Zinc(II) complexes of indole thiosemicarbazones: DNA/protein binding, molecular docking and in vitro cytotoxicity studies. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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266
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Lee YM, Grauffel C, Chen T, Sargsyan K, Lim C. Factors Governing the Different Functions of Zn2+-Sites with Identical Ligands in Proteins. J Chem Inf Model 2019; 59:3946-3954. [DOI: 10.1021/acs.jcim.9b00617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Ming Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Cédric Grauffel
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Ting Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Karen Sargsyan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Carmay Lim
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 300 Taiwan
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267
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Won Y, Pagar AD, Patil MD, Dawson PE, Yun H. Recent Advances in Enzyme Engineering through Incorporation of Unnatural Amino Acids. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0163-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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268
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Doyle CM, Naser D, Bauman HA, Rumfeldt JA, Meiering EM. Spectrophotometric method for simultaneous measurement of zinc and copper in metalloproteins using 4-(2-pyridylazo)resorcinol. Anal Biochem 2019; 579:44-56. [DOI: 10.1016/j.ab.2019.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/04/2019] [Accepted: 03/17/2019] [Indexed: 12/26/2022]
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269
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Malik A, Lin YF, Pratihar S, Angel LA, Hase WL. Direct Dynamics Simulations of Fragmentation of a Zn(II)-2Cys-2His Oligopeptide. Comparison with Mass Spectrometry Collision-Induced Dissociation. J Phys Chem A 2019; 123:6868-6885. [DOI: 10.1021/acs.jpca.9b05218] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Abdul Malik
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061 United States
| | - Yu-Fu Lin
- Department of Chemistry Texas A&M University—Commerce, 2600 South Neal Street, Commerce, Texas 75428, United States
| | - Subha Pratihar
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061 United States
| | - Laurence A. Angel
- Department of Chemistry Texas A&M University—Commerce, 2600 South Neal Street, Commerce, Texas 75428, United States
| | - William L. Hase
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061 United States
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270
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Su Y, Yang H, Gao J, Qin Y, Zheng Y, Zhu D. Interfacial Zinc Phosphate is the Key to Controlling Biocompatibility of Metallic Zinc Implants. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900112. [PMID: 31380203 PMCID: PMC6661942 DOI: 10.1002/advs.201900112] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/14/2019] [Indexed: 05/19/2023]
Abstract
Recently emerged metallic zinc (Zn) is a new generation of promising candidates for bioresorbable medical implants thanks to its essential physiological relevance, mechanical strength, and more matched degradation pace to that of tissue healing. Zn-based metals exhibit excellent biocompatibility in various animal models. However, direct culture of cells on Zn metals yields surprisingly low viability, indicating high cytotoxicity of Zn. This contradicting phenomenon should result from the different degradation mechanisms between in vitro and in vivo. To solve this puzzle, the roles of all major players, i.e., zinc phosphate (ZnP), zinc oxide (ZnO), zinc hydroxide (Zn(OH)2), pH, and Zn2+, which are involved in the degradation process are examined. Data shows that ZnP, not ZnO or Zn(OH)2, significantly enhances its biocompatibility. The mild pH change during degradation also has no significant impact on cell viability. Collectively, ZnP appears to be the key to controlling the biocompatibility of Zn implants and could be applied as a novel surface coating to improve biocompatibility of different implants.
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Affiliation(s)
- Yingchao Su
- Department of Biomedical EngineeringUniversity of North TexasTX76207USA
| | - Hongtao Yang
- Department of Materials Science and EngineeringPeking UniversityBeijing100871China
| | - Julia Gao
- Department of Biomedical EngineeringUniversity of North TexasTX76207USA
| | - Yi‐Xian Qin
- Department of Biomedical EngineeringStony Brook UniversityNY11794USA
| | - Yufeng Zheng
- Department of Materials Science and EngineeringPeking UniversityBeijing100871China
- International Research Organization for Advanced Science and TechnologyKumamoto University2‐39‐1 Kurokami, Chuo‐KuKumamoto860‐8555Japan
| | - Donghui Zhu
- Department of Biomedical EngineeringUniversity of North TexasTX76207USA
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271
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Mahan B, Moynier F, Jørgensen AL, Habekost M, Siebert J. Examining the homeostatic distribution of metals and Zn isotopes in Göttingen minipigs. Metallomics 2019; 10:1264-1281. [PMID: 30128473 DOI: 10.1039/c8mt00179k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The role of metals in biologic systems is manifold, and understanding their behaviour in bodily processes, especially those relating to neurodegenerative diseases, is at the forefront of medical science. The function(s) of metals - such as the transition metals - and their utility in both the diagnosis and treatment of diseases in human beings, is often examined via the characterization of their distribution in animal models, with porcine models considered exceptional proxies for human physiology. To this end, we have investigated the homeostatic distribution of numerous metals (Mg, K, Ca, Mn, Fe, Cu, Zn, Rb and Mo), the non-metal P, and Zn isotopes in the organs and blood (red blood cells, plasma) of Göttingen minipigs. These results represent the first set of data outlining the homeostatic distribution of metals and Zn isotopes in Göttingen minipigs, and indicate a relatively homogeneous distribution of alkali/alkaline earth metals and P among the organs, with generally lower levels in the blood, while indicating more heterogeneous and systematic abundance patterns for transition metals. In general, the distribution of all elements analysed is similar to that found in humans. Our elemental abundance data, together with data reported for humans in the literature, suggest that element-to-element ratios, e.g. Cu/Mg, show potential as simple diagnostics for diseases such as Alzheimer's. Isotopic data indicate a heterogeneous distribution of Zn isotopes among the organs and blood, with the liver, heart and brain being the most depleted in heavy Zn isotopes, and the blood the most enriched, consistent with observations in other animal models and humans. The Zn isotopic composition of Göttingen minipigs displays a systematic offset towards lighter δ66Zn values relative to mice and sheep models, suggesting physiology that is more closely aligned with that of humans. Cumulatively, these observations strongly suggest that Göttingen minipigs are an excellent animal model for translational research involving metals, and these data provide a strong foundation for future research.
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Affiliation(s)
- Brandon Mahan
- Institut de Physique du Globe de Paris, Université Paris Diderot, Sorbonne Paris Cité, CNRS UMR 7154, 1 rue Jussieu, 75238 Paris Cedex 05, France
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272
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Tiffany AS, Gray DL, Woods TJ, Subedi K, Harley BAC. The inclusion of zinc into mineralized collagen scaffolds for craniofacial bone repair applications. Acta Biomater 2019; 93:86-96. [PMID: 31121312 PMCID: PMC6615986 DOI: 10.1016/j.actbio.2019.05.031] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/23/2019] [Accepted: 05/10/2019] [Indexed: 12/19/2022]
Abstract
Implant osteoinduction and subsequent osteogenic activity are critical events that need improvement for regenerative healing of large craniofacial bone defects. Here we describe the augmentation of the mineral content of a class of mineralized collagen scaffolds under development for craniomaxillofacial bone regeneration via the inclusion of zinc ions to promote osteogenesis in vitro. Zinc is an essential trace element in skeletal tissue and bone, with soluble zinc being shown to promote osteogenic differentiation of porcine adipose derived stem cells. We report the development of a new class of zinc functionalized scaffolds fabricated by adding zinc sulfate to a mineralized collagen-glycosaminoglycan precursor suspension that was then freeze dried to form a porous biomaterial. We report analysis of zinc functionalized scaffolds via imaging (scanning electron microscopy), mechanical testing (compression), and compositional (X-ray diffraction, inductively coupled plasma mass spectrometry) analyses. Notably, zinc-functionalized scaffolds display morphological changes to the mineral phase and altered elastic modulus without substantially altering the composition of the brushite phase or removing the micro-scale pore morphology of the scaffold. These scaffolds also display zinc release kinetics on the order of days to weeks and promote successful growth and pro-osteogenic capacity of porcine adipose derived stem cells cultured within these zinc scaffolds. Taken together, we believe that zinc functionalized scaffolds provide a unique platform to explore strategies to improve in vivo osteogenesis in craniomaxillofacial bone injuries models. STATEMENT OF SIGNIFICANCE: Craniomaxillofacial bone defects that arise from traumatic, congenital, and post-oncologic origins cannot heal on their own and often require surgical intervention. We have developed a class of mineralized collagen scaffolds that promotes osteogenesis and bone regeneration. Here we describe the inclusion of zinc sulfate into the mineralized collagen scaffold to improve osteogenesis. Zinc functionalized scaffolds demonstrate altered crystallite microstructure but consistent Brushite chemistry, improved mechanics, and promote zinc transporter expression while supporting stem cell viability, osteogenic differentiation, and mineral biosynthesis.
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Affiliation(s)
- Aleczandria S Tiffany
- Dept. Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Danielle L Gray
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Toby J Woods
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Kiran Subedi
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Brendan A C Harley
- Dept. Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
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273
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Fernandes HS, Teixeira CSS, Sousa SF, Cerqueira NMFSA. Formation of Unstable and very Reactive Chemical Species Catalyzed by Metalloenzymes: A Mechanistic Overview. Molecules 2019; 24:E2462. [PMID: 31277490 PMCID: PMC6651669 DOI: 10.3390/molecules24132462] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 11/16/2022] Open
Abstract
Nature has tailored a wide range of metalloenzymes that play a vast array of functions in all living organisms and from which their survival and evolution depends on. These enzymes catalyze some of the most important biological processes in nature, such as photosynthesis, respiration, water oxidation, molecular oxygen reduction, and nitrogen fixation. They are also among the most proficient catalysts in terms of their activity, selectivity, and ability to operate at mild conditions of temperature, pH, and pressure. In the absence of these enzymes, these reactions would proceed very slowly, if at all, suggesting that these enzymes made the way for the emergence of life as we know today. In this review, the structure and catalytic mechanism of a selection of diverse metalloenzymes that are involved in the production of highly reactive and unstable species, such as hydroxide anions, hydrides, radical species, and superoxide molecules are analyzed. The formation of such reaction intermediates is very difficult to occur under biological conditions and only a rationalized selection of a particular metal ion, coordinated to a very specific group of ligands, and immersed in specific proteins allows these reactions to proceed. Interestingly, different metal coordination spheres can be used to produce the same reactive and unstable species, although through a different chemistry. A selection of hand-picked examples of different metalloenzymes illustrating this diversity is provided and the participation of different metal ions in similar reactions (but involving different mechanism) is discussed.
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Affiliation(s)
- Henrique S Fernandes
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Carla S Silva Teixeira
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Sérgio F Sousa
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Nuno M F S A Cerqueira
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal.
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274
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Guechtouli N, Zaater S, Kichou N, Bouaziz-Terrachet S, Meghezzi H. Theoretical investigation of dicarboxamide mono copper (II) and novel transition metal complexes: Structural, chemical reactivity, vibrational and in-silico biological analysis. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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275
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Gilbert R, Peto T, Lengyel I, Emri E. Zinc Nutrition and Inflammation in the Aging Retina. Mol Nutr Food Res 2019; 63:e1801049. [PMID: 31148351 DOI: 10.1002/mnfr.201801049] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 04/18/2019] [Indexed: 12/16/2022]
Abstract
Zinc is an essential nutrient for human health. It plays key roles in maintaining protein structure and stability, serves as catalytic factor for many enzymes, and regulates diverse fundamental cellular processes. Zinc is important in affecting signal transduction and, in particular, in the development and integrity of the immune system, where it affects both innate and adaptive immune responses. The eye, especially the retina-choroid complex, has an unusually high concentration of zinc compared to other tissues. The highest amount of zinc is concentrated in the retinal pigment epithelium (RPE) (RPE-choroid, 292 ± 98.5 µg g-1 dry tissue), followed by the retina (123 ± 62.2 µg g-1 dry tissue). The interplay between zinc and inflammation has been explored in other parts of the body but, so far, has not been extensively researched in the eye. Several lines of evidence suggest that ocular zinc concentration decreases with age, especially in the context of age-related disease. Thus, a hypothesis that retinal function could be modulated by zinc nutrition is proposed, and subsequently trialled clinically. In this review, the distribution and the potential role of zinc in the retina-choroid complex is outlined, especially in relation to inflammation and immunity, and the clinical studies to date are summarized.
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Affiliation(s)
- Rosie Gilbert
- Moorfields Eye Hospital NHS Foundation Trust, City Road, London, EC1V 2PD, UK.,UCL Institute of Ophthalmology, Bath Street, London, EC1V 2EL, UK
| | - Tunde Peto
- School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
| | - Imre Lengyel
- UCL Institute of Ophthalmology, Bath Street, London, EC1V 2EL, UK.,School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
| | - Eszter Emri
- School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
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276
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First Crystal Structure of a Nonstructural Hepatitis E Viral Protein Identifies a Putative Novel Zinc-Binding Protein. J Virol 2019; 93:JVI.00170-19. [PMID: 31019049 DOI: 10.1128/jvi.00170-19] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/17/2019] [Indexed: 12/14/2022] Open
Abstract
Hepatitis E virus (HEV) is a 7.2-kb positive-sense, single-stranded RNA virus containing three partially overlapping reading frames, ORF1 to ORF3. All nonstructural proteins required for viral replication are encoded by ORF1 and are transcribed as a single transcript. Computational analysis of the complete ORF1 polyprotein identified a previously uncharacterized region of predicted secondary structure bordered by two disordered regions coinciding partially with a region predicted as a putative cysteine protease. Following successful cloning, expression, and purification of this region, the crystal structure of the identified protein was determined and identified to have considerable structural homology to a fatty acid binding domain. Further analysis of the structure revealed a metal binding site, shown unambiguously to specifically bind zinc via a nonclassical, potentially catalytic zinc-binding motif. Based on the structural homology of the HEV protein with known structures, along with the presence of a catalytic zinc-binding motif, it is possible that the identified protein corresponds to the HEV protease, which could require activation or repression through the binding of a fatty acid. This represents a significant step forward in the characterization and the understanding of the molecular mechanisms of the HEV genome. We present analysis for the first time of this identified nonstructural protein, expanding the knowledge and understanding of the complex mechanisms of HEV biology.IMPORTANCE Hepatitis E virus (HEV) is an emerging virus found predominately in developing countries; it causes an estimated 20 million infections, which result in approximately 57,000 deaths a year. Although it is known that the nonstructural proteins of HEV ORF1 are expressed as a single transcript, there is debate as to whether ORF1 functions as a single polyprotein or if it is processed into separate domains via a viral or endogenous cellular protease. Here we present the first structural and biophysical characterization of an HEV nonstructural protein using a construct that has partially overlapping boundaries with the predicted putative cysteine protease.
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277
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Importance of potassium ions for ribosome structure and function revealed by long-wavelength X-ray diffraction. Nat Commun 2019; 10:2519. [PMID: 31175275 PMCID: PMC6555806 DOI: 10.1038/s41467-019-10409-4] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 05/06/2019] [Indexed: 11/08/2022] Open
Abstract
The ribosome, the largest RNA-containing macromolecular machinery in cells, requires metal ions not only to maintain its three-dimensional fold but also to perform protein synthesis. Despite the vast biochemical data regarding the importance of metal ions for efficient protein synthesis and the increasing number of ribosome structures solved by X-ray crystallography or cryo-electron microscopy, the assignment of metal ions within the ribosome remains elusive due to methodological limitations. Here we present extensive experimental data on the potassium composition and environment in two structures of functional ribosome complexes obtained by measurement of the potassium anomalous signal at the K-edge, derived from long-wavelength X-ray diffraction data. We elucidate the role of potassium ions in protein synthesis at the three-dimensional level, most notably, in the environment of the ribosome functional decoding and peptidyl transferase centers. Our data expand the fundamental knowledge of the mechanism of ribosome function and structural integrity.
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278
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Mukherjee M, Sarkar P, Goswami G, Das D. Regulation of butanol biosynthesis in Clostridium acetobutylicum ATCC 824 under the influence of zinc supplementation and magnesium starvation. Enzyme Microb Technol 2019; 129:109352. [PMID: 31307579 DOI: 10.1016/j.enzmictec.2019.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/18/2019] [Accepted: 05/21/2019] [Indexed: 12/25/2022]
Abstract
Present study reports modulation in butanol biosynthesis in Clostridium acetobutylicum ATCC 824 under the influence of zinc supplementation or magnesium starvation either individually or in combination. An improvement in butanol titer from 11.83 g L-1 in control to 13.72 g L-1, 15.79 g L-1, and 19.18 g L-1 was achieved when organism was grown on magnesium starved, zinc supplemented and combined zinc supplemented-magnesium starved fermentation medium, respectively. The elevation in butanol biosynthesis was associated with raised glucose utilization, reduced ethanol production and early induction of solventogenesis. Change in these phenotypic traits of the organism may be attributed to multi-level modulation in central carbon metabolism e.g., upregulation of glycolytic pathway; upregulation in thiolase activity; key intermediate enzyme for biosynthesis of acids and solvent; upregulation in the activity of butyrylaldehyde dehydrogenase & butanol dehydrogenase, the enzymes responsible for butanol biosynthesis and downregulation in alcohol dehydrogenase, redirecting carbon flux from ethanol to butanol.
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Affiliation(s)
- Mayurketan Mukherjee
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Payel Sarkar
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Gargi Goswami
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Debasish Das
- Department of Biosciences & Bioengineering, Indian Institute of Technology, Guwahati, Assam 781039, India; DBT-PAN IIT Centre for Bioenergy, Indian Institute of Technology, Guwahati, Assam 781039, India.
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279
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Kalinin DV, Agoglitta O, Van de Vyver H, Melesina J, Wagner S, Riemann B, Schäfers M, Sippl W, Löffler B, Holl R. Proline-based hydroxamates targeting the zinc-dependent deacetylase LpxC: Synthesis, antibacterial properties, and docking studies. Bioorg Med Chem 2019; 27:1997-2018. [DOI: 10.1016/j.bmc.2019.03.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 01/05/2023]
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280
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Zhang D, Zhang T, Liu J, Chen J, Li Y, Ning G, Huo N, Tian W, Ma H. Zn Supplement-Antagonized Cadmium-Induced Cytotoxicity in Macrophages In Vitro: Involvement of Cadmium Bioaccumulation and Metallothioneins Regulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:4611-4622. [PMID: 30942077 DOI: 10.1021/acs.jafc.9b00232] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cadmium (Cd) is a toxic metal leading to multiple forms of organ damage. Zinc (Zn) was reported as a potential antagonist against Cd toxicity. The present study investigates the antagonistic effect of Zn (20 μM) on Cd (20 or 50 μM) cytotoxicity in macrophages in vitro. The results shows that Cd exposure caused dose-dependent morphologic and ultrastructural alterations in RAW 264.7 macrophages. Zn supplement significantly inhibited Cd cytotoxicity in RAW 264.7 or HD-11 macrophages by mitigating cell apoptosis, excessive ROS output, and mitochondrial membrane depolarization. Notably, Zn supplement for 12 h remarkably prevented intracellular Cd2+ accumulation in 20 μM (95.99 ± 9.93 vs 29.64 ± 5.08 ng/106 cells; P = 0.0008) or 50 μM Cd (179.78 ± 28.66 vs 141.62 ± 22.15 ng/106 cells; P = 0.003) exposed RAW 264.7 cells. Further investigation found that Cd promoted metallothioneins (MTs) and metal regulatory transcription factor 1 (MTF-1) expression in RAW 264.7 macrophages. Twenty μM Zn supplement dramatically enhanced MTs and MTF-1 levels in Cd-exposed RAW 264.7 macrophages. Intracellular Zn2+ chelation or MTF-1 gene silencing inhibited MTs synthesis in Cd-exposed RAW 264.7 macrophages, which was accompanied by the declined expression of MTF-1, indicating that regulation of Zn on MTs was partially achieved by MTF-1 mobilization. In conclusion, this study demonstrates the antagonism of Zn against Cd cytotoxicity in macrophages and reveals its antagonistic mechanism by preventing Cd2+ bioaccumulation and promoting MTs expression.
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Affiliation(s)
- Ding Zhang
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Ting Zhang
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Jingying Liu
- Function Laboratory , Shanxi Medical University , Taiyuan 030001 , P. R. China
| | - Jianshan Chen
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Ying Li
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Guanbao Ning
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Nairui Huo
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Wenxia Tian
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
| | - Haili Ma
- College of Animal Science and Veterinary Medicine , Shanxi Agricultural University , Taigu 030800 , P. R. China
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281
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Shen T, Li W, Zhang X, Kong W, Liu F, Wang W, Peng J. High-Sensitivity Determination of Nutrient Elements in Panax notoginseng by Laser-induced Breakdown Spectroscopy and Chemometric Methods. Molecules 2019; 24:molecules24081525. [PMID: 31003405 PMCID: PMC6515346 DOI: 10.3390/molecules24081525] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/12/2019] [Accepted: 04/16/2019] [Indexed: 12/25/2022] Open
Abstract
High-accuracy and fast detection of nutritive elements in traditional Chinese medicine Panax notoginseng (PN) is beneficial for providing useful assessment of the healthy alimentation and pharmaceutical value of PN herbs. Laser-induced breakdown spectroscopy (LIBS) was applied for high-accuracy and fast quantitative detection of six nutritive elements in PN samples from eight producing areas. More than 20,000 LIBS spectral variables were obtained to show elemental differences in PN samples. Univariate and multivariate calibrations were used to analyze the quantitative relationship between spectral variables and elements. Multivariate calibration based on full spectra and selected variables by the least absolute shrinkage and selection operator (Lasso) weights was used to compare the prediction ability of the partial least-squares regression (PLS), least-squares support vector machines (LS-SVM), and Lasso models. More than 90 emission lines for elements in PN were found and located. Univariate analysis was negatively interfered by matrix effects. For potassium, calcium, magnesium, zinc, and boron, LS-SVM models based on the selected variables obtained the best prediction performance with Rp values of 0.9546, 0.9176, 0.9412, 0.9665, and 0.9569 and root mean squared error of prediction (RMSEP) of 0.7704 mg/g, 0.0712 mg/g, 0.1000 mg/g, 0.0012 mg/g, and 0.0008 mg/g, respectively. For iron, the Lasso model based on full spectra obtained the best result with an Rp value of 0.9348 and RMSEP of 0.0726 mg/g. The results indicated that the LIBS technique coupled with proper multivariate chemometrics could be an accurate and fast method in the determination of PN nutritive elements for traditional Chinese medicine management and pharmaceutical analysis.
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Affiliation(s)
- Tingting Shen
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Weijiao Li
- Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, China.
| | - Xi Zhang
- Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, China.
| | - Wenwen Kong
- School of Information Engineering, Zhejiang A & F University, Hangzhou 311300, China.
| | - Fei Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
- Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture and Rural Affairs, Hangzhou 310058, China.
| | - Wei Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Jiyu Peng
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
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282
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Zhu D, Cockerill I, Su Y, Zhang Z, Fu J, Lee KW, Ma J, Okpokwasili C, Tang L, Zheng Y, Qin YX, Wang Y. Mechanical Strength, Biodegradation, and in Vitro and in Vivo Biocompatibility of Zn Biomaterials. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6809-6819. [PMID: 30693753 DOI: 10.1021/acsami.8b20634] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Zn-based biomaterials have emerged as promising new types of bioresorbable metallics applicable to orthopedic devices, cardiovascular stents, and other medical applications recently. Compared to other degradable metallic biomaterials (i.e., Mg- or Fe-based), Zn biomaterials have a more appropriate corrosion rate without hydrogen gas evolution. Here, we evaluated the potential of Zn-based metallics as medical implants, both in vitro and in vivo, alongside a standard benchmark Mg alloy, AZ31. The mechanical properties of the pure Zn were not strong enough but were significantly enhanced (microhardness > 70 kg/mm2, strength > 220 MPa, elongation > 15%) after alloying with Sr or Mg (1.5 at. %), surpassing the minimal design criteria for load-bearing device applications. The corrosion rate of Zn-based biomaterials was about 0.4 mm/year, significantly slower than that of AZ31. The measured cell viability and proliferation of three different human primary cells fared better for Zn-based biomaterials than AZ31 using both direct and indirect culture methods. Platelet adhesion and activation on Zn-based materials were minimal, significantly less than on AZ31. The hemolysis ratio of red cells (<0.5%) after incubation with Zn-based materials was also well below the ISO standard of 5%. Moreover, Zn-based biomaterials promoted stem cell differentiation to induce the extracellular matrix mineralization process. In addition, in vivo animal testing using subcutaneous, bone, and vascular implantations revealed that the acute toxicity and immune response of Zn-based biomaterials were minimal/moderate, comparable to that of AZ31. No extensive cell death and foreign body reactions were observed. Taken together, Zn-based biomaterials may have a great potential as promising candidates for medical implants.
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Affiliation(s)
- Donghui Zhu
- Department of Biomedical Engineering , University of North Texas , Denton , Texas 76207 , United States
| | - Irsalan Cockerill
- Department of Biomedical Engineering , University of North Texas , Denton , Texas 76207 , United States
| | - Yingchao Su
- Department of Biomedical Engineering , University of North Texas , Denton , Texas 76207 , United States
| | | | - Jiayin Fu
- Nancy E and Peter C. Meinig School of Biomedical Engineering , Cornell University , New York 14853 , United States
| | | | - Jun Ma
- Department of Biomedical Engineering , University of North Texas , Denton , Texas 76207 , United States
| | - Chuka Okpokwasili
- Department of Bioengineering , University of Texas at Arlington , Arlington , Texas 76010 , United States
| | - Liping Tang
- Department of Bioengineering , University of Texas at Arlington , Arlington , Texas 76010 , United States
| | - Yufeng Zheng
- Department of Materials Science and Engineering, College of Engineering , Peking University , Beijing 100871 , China
| | - Yi-Xian Qin
- Department of Biomedical Engineering , Stony Brook University , New York 11794 , United States
| | - Yadong Wang
- Nancy E and Peter C. Meinig School of Biomedical Engineering , Cornell University , New York 14853 , United States
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283
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Adulcikas J, Sonda S, Norouzi S, Sohal SS, Myers S. Targeting the Zinc Transporter ZIP7 in the Treatment of Insulin Resistance and Type 2 Diabetes. Nutrients 2019; 11:nu11020408. [PMID: 30781350 PMCID: PMC6412268 DOI: 10.3390/nu11020408] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/13/2019] [Accepted: 02/12/2019] [Indexed: 02/07/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a disease associated with dysfunctional metabolic processes that lead to abnormally high levels of blood glucose. Preceding the development of T2DM is insulin resistance (IR), a disorder associated with suppressed or delayed responses to insulin. The effects of this response are predominately mediated through aberrant cell signalling processes and compromised glucose uptake into peripheral tissue including adipose, liver and skeletal muscle. Moreover, a major factor considered to be the cause of IR is endoplasmic reticulum (ER) stress. This subcellular organelle plays a pivotal role in protein folding and processes that increase ER stress, leads to maladaptive responses that result in cell death. Recently, zinc and the proteins that transport this metal ion have been implicated in the ER stress response. Specifically, the ER-specific zinc transporter ZIP7, coined the "gate-keeper" of zinc release from the ER into the cytosol, was shown to be essential for maintaining ER homeostasis in intestinal epithelium and myeloid leukaemia cells. Moreover, ZIP7 controls essential cell signalling pathways similar to insulin and activates glucose uptake in skeletal muscle. Accordingly, ZIP7 may be essential for the control of ER localized zinc and mechanisms that disrupt this process may lead to ER-stress and contribute to IR. Accordingly, understanding the mechanisms of ZIP7 action in the context of IR may provide opportunities to develop novel therapeutic options to target this transporter in the treatment of IR and subsequent T2DM.
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Affiliation(s)
- John Adulcikas
- College of Health and Medicine, School of Health Sciences, University of Tasmania, TAS 7005, Australia.
| | - Sabrina Sonda
- College of Health and Medicine, School of Health Sciences, University of Tasmania, TAS 7005, Australia.
| | - Shaghayegh Norouzi
- College of Health and Medicine, School of Health Sciences, University of Tasmania, TAS 7005, Australia.
| | - Sukhwinder Singh Sohal
- College of Health and Medicine, School of Health Sciences, University of Tasmania, TAS 7005, Australia.
| | - Stephen Myers
- College of Health and Medicine, School of Health Sciences, University of Tasmania, TAS 7005, Australia.
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284
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Okajima S, Hamamoto A, Asano M, Isogawa K, Ito H, Kato S, Hirata Y, Furuta K, Takemori H. Azepine derivative T4FAT, a new copper chelator, inhibits tyrosinase. Biochem Biophys Res Commun 2019; 509:209-215. [DOI: 10.1016/j.bbrc.2018.12.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/14/2018] [Indexed: 01/09/2023]
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285
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Khanra S, Ta S, Ghosh M, Chatterjee S, Das D. Subtle structural variation in azine/imine derivatives controls Zn2+ sensitivity: ESIPT-CHEF combination for nano-molar detection of Zn2+ with DFT support. RSC Adv 2019; 9:21302-21310. [PMID: 35521340 PMCID: PMC9066000 DOI: 10.1039/c9ra03652k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/30/2019] [Indexed: 11/24/2022] Open
Abstract
Excited-state intra-molecular proton transfer (ESIPT)-active imine and azine derivatives, structurally characterised by XRD, and denoted L1, L2, L3 and L4, possess weak fluorescence. The interaction of these probes with Zn2+ turns ON the fluorescence to allow its nano-molar detection. Among the four ESIPT-active molecules, L2, L3 and L4 are bis-imine derivatives while L1 is a mono-imine derivative. Among the three bis-imine derivatives, one is symmetric (L3) while L2 and L4 are unsymmetrical. The lowest detection limits (DL) of L1, L2, L3 and L4 for Zn2+ are 32.66 nM, 36.16 nM, 15.20 nM and 33.50 nM respectively. All the probes bind Zn2+ (105 M−1 order) strongly. Computational studies explore the orbital level interactions responsible for the associated photo-physical processes. Single crystal X-ray structurally characterised ESIPT-active weakly fluorescent imine and azine derivatives undergo Zn2+ assisted turn ON fluorescence.![]()
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Affiliation(s)
- Somnath Khanra
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Sabyasachi Ta
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Milan Ghosh
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | | | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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286
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Bocian A, Brykczyńska D, Kubicki M, Hnatejko Z, Wałęsa-Chorab M, Gorczyński A, Patroniak V. Complexation behavior of 6,6″-dimethyl-2,2′:6′,2″-terpyridine ligand with Co(II), Au(III), Ag(I), Zn(II) and Cd(II) ions: Synthesis, spectroscopic characterization and unusual structural motifs. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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287
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Mondal S, Chakraborty M, Mondal A, Pakhira B, Mukhopadhyay SK, Banik A, Sengupta S, Chattopadhyay SK. Crystal structure, spectroscopic, DNA binding studies and DFT calculations of a Zn(ii) complex. NEW J CHEM 2019. [DOI: 10.1039/c8nj05646c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly fluorescent Zn(ii) complex and its DNA-binding and bio-imaging applications are reported.
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Affiliation(s)
- Satyajit Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Moumita Chakraborty
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Antu Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Bholanath Pakhira
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | | | - Avishek Banik
- Department of Microbiology
- The University of Burdwan
- Burdwan-713104
- India
| | - Swaraj Sengupta
- Department of Chemistry
- Birla Institute of Technology
- Ranchi-835215
- India
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288
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Suktanarak P, Ruangpornvisuti V, Suksai C, Tuntulani T, Leeladee P. Stabilisation of copper(i) polypyridyl complexes toward aerobic oxidation by zinc(ii) in combination with acetate anions: a facile approach and its application in ascorbic acid sensing in aqueous solution. Dalton Trans 2019; 48:997-1005. [DOI: 10.1039/c8dt03580f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new approach to stabilise Cu(i) complexes in aqueous solution using Zn(ii) acetate was demonstrated.
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Affiliation(s)
- Pattira Suktanarak
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | | | - Chomchai Suksai
- Department of Chemistry and Centre for Innovation in Chemistry
- Faculty of Science
- Burapha University
- Chonburi 20131
- Thailand
| | - Thawatchai Tuntulani
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Pannee Leeladee
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
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289
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Lamine W, Boughdiri S, Christ L, Morell C, Chermette H. Coordination chemistry of Zn
2+
with Sal(ph)en ligands: Tetrahedral coordination or penta‐coordination? a DFT analysis. J Comput Chem 2018. [DOI: 10.1002/jcc.25755] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Walid Lamine
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
- Université de Tunis El ManarFaculté des Sciences de Tunis, UR11ES19 Unité de recherche Physico‐Chimie des Matériaux Condensés El‐Manar II, 2092, Tunis Tunisia
| | - Salima Boughdiri
- Université de Tunis El ManarFaculté des Sciences de Tunis, UR11ES19 Unité de recherche Physico‐Chimie des Matériaux Condensés El‐Manar II, 2092, Tunis Tunisia
| | - Lorraine Christ
- Université de Lyon, Institut de Recherches sur la Catalyse et l'Environnement de LyonIRCELYON, UMR CNRS 5256, Université Lyon 1 69626, Villeurbanne Cedex France
| | - Christophe Morell
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
| | - Henry Chermette
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
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290
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Englinger B, Pirker C, Heffeter P, Terenzi A, Kowol CR, Keppler BK, Berger W. Metal Drugs and the Anticancer Immune Response. Chem Rev 2018; 119:1519-1624. [DOI: 10.1021/acs.chemrev.8b00396] [Citation(s) in RCA: 174] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bernhard Englinger
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Christine Pirker
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Petra Heffeter
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Alessio Terenzi
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna and Medical University of Vienna, Vienna, Austria
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Christian R. Kowol
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna and Medical University of Vienna, Vienna, Austria
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Bernhard K. Keppler
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna and Medical University of Vienna, Vienna, Austria
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, University of Vienna and Medical University of Vienna, Vienna, Austria
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291
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DNA binding and antitumor activities of zinc(II) complexes with some S-alkenyl derivatives of thiosalicylic acid. TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0285-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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292
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Prior R, Van Helleputte L, Klingl YE, Van Den Bosch L. HDAC6 as a potential therapeutic target for peripheral nerve disorders. Expert Opin Ther Targets 2018; 22:993-1007. [DOI: 10.1080/14728222.2018.1541235] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Robert Prior
- Department of Neurosciences, KU Leuven - University of Leuven, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Leuven, Belgium
| | - Lawrence Van Helleputte
- Department of Neurosciences, KU Leuven - University of Leuven, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Leuven, Belgium
| | - Yvonne Eileen Klingl
- Department of Neurosciences, KU Leuven - University of Leuven, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Leuven, Belgium
| | - Ludo Van Den Bosch
- Department of Neurosciences, KU Leuven - University of Leuven, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Leuven, Belgium
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293
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Sensi SL, Granzotto A, Siotto M, Squitti R. Copper and Zinc Dysregulation in Alzheimer's Disease. Trends Pharmacol Sci 2018; 39:1049-1063. [PMID: 30352697 DOI: 10.1016/j.tips.2018.10.001] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/20/2018] [Accepted: 10/01/2018] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is one of the most common forms of dementia. Despite a wealth of knowledge on the molecular mechanisms involved in AD, current treatments have mainly focused on targeting amyloid β (Aβ) production, but have failed to show significant effects and efficacy. Therefore, a critical reconsideration of the multifactorial nature of the disease is needed. AD is a complex multifactorial disorder in which, along with Aβ and tau, the convergence of polygenic, epigenetic, environmental, vascular, and metabolic factors increases the global susceptibility to the disease and shapes its course. One of the cofactors converging on AD is the dysregulation of brain metals. In this review, we focus on the role of AD-related neurodegeneration and cognitive decline triggered by the imbalance of two endogenous metals: copper and zinc.
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Affiliation(s)
- Stefano L Sensi
- Center of Excellence on Aging and Translational Medicine, CeSI-MeT, Chieti, Italy; Department of Neuroscience, Imaging, and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara, Chieti-Pescara, Italy; Departments of Neurology and Pharmacology, Institute for Mind Impairments and Neurological Disorders, University of California, Irvine, Irvine, USA.
| | - Alberto Granzotto
- Center of Excellence on Aging and Translational Medicine, CeSI-MeT, Chieti, Italy; Department of Neuroscience, Imaging, and Clinical Sciences, University G. d'Annunzio of Chieti-Pescara, Chieti-Pescara, Italy
| | | | - Rosanna Squitti
- IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
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294
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Kovacs NA, Penev PI, Venapally A, Petrov AS, Williams LD. Circular Permutation Obscures Universality of a Ribosomal Protein. J Mol Evol 2018; 86:581-592. [PMID: 30306205 DOI: 10.1007/s00239-018-9869-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/28/2018] [Indexed: 12/29/2022]
Abstract
Functions, origins, and evolution of the translation system are best understood in the context of unambiguous and phylogenetically based taxonomy and nomenclature. Here, we map ribosomal proteins onto the tree of life and provide a nomenclature for ribosomal proteins that is consistent with phylogenetic relationships. We have increased the accuracy of homology relationships among ribosomal proteins, providing a more informative picture of their lineages. We demonstrate that bL33 (bacteria) and eL42 (archaea/eukarya) are homologs with common ancestry and acute similarities in sequence and structure. Their similarities were previously obscured by circular permutation. The most likely mechanism of permutation between bL33 and eL42 is duplication followed by fusion and deletion of both the first and last β-hairpins. bL33 and eL42 are composed of zinc ribbon protein folds, one of the most common zinc finger fold-groups of, and most frequently observed in translation-related domains. Bacterial-specific ribosomal protein bL33 and archaeal/eukaryotic-specific ribosomal protein eL42 are now both assigned the name of uL33, indicating a universal ribosomal protein. We provide a phylogenetic naming scheme for all ribosomal proteins that is based on phylogenetic relationships to be used as a tool for studying the systemics, evolution, and origins of the ribosome.
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Affiliation(s)
- Nicholas A Kovacs
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Petar I Penev
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Amitej Venapally
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Anton S Petrov
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA.
| | - Loren Dean Williams
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA.
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA.
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295
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Wang Q, Xiong YL. Zinc-binding behavior of hemp protein hydrolysates: Soluble versus insoluble zinc-peptide complexes. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.08.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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296
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Niedermayer EK, Genther-Schroeder ON, Loy DD, Hansen SL. Effect of varying trace mineral supplementation of steers with or without hormone implants on growth and carcass characteristics. J Anim Sci 2018; 96:1159-1170. [PMID: 29506086 DOI: 10.1093/jas/skx063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/20/2018] [Indexed: 11/14/2022] Open
Abstract
To determine the effects of trace mineral (TM) supplementation and hormone implant strategy on growth and carcass characteristics of cattle, 72 Angus-cross steers (388 ± 17 kg) were blocked by body weight (six steers per pen) to a 2 × 3 factorial. Factors included growth-stimulating implant (GS): day 0 with Component TE-IS, reimplanted day 56 with Component TE-200 (IMP) or no implant (NoIMP), and TM supplementation (TM): no supplemental TM (CON), TM supplemented at national (NASEM, 2016). Nutrient requirements of beef cattle. 8th ed. Washington, DC: The National Academics Press) recommendations of 10 Cu, 30 Zn, 20 Mn, 0.10 Se, 0.15 Co, and 0.50 I (mg/kg; REC), or TM supplemented at feedlot consultant recommendations of 20 Cu, 100 Zn, 50 Mn, 0.30 Se, 0.20 Co, and 0.50 I (mg/kg; IND). Steers received a finishing diet for 124 d in GrowSafe bunks and were harvested on day 125. Data were analyzed in SAS as a 2 × 3 factorial with steer as the experimental unit (n = 12 per combination). Day -7 liver trace mineral concentrations were used as a covariate in analysis. There were no GS × TM effects for liver Zn, Mn, Se, or Co (P ≥ 0.11) on day 70 or 125. Implanted steers had lesser liver Cu and Mn on day 70 (P ≤ 0.05) and day 125 compared with NoIMP. There was a GS × TM interaction for liver Cu on day 125 (P = 0.05) where IMP/REC, IMP/IND, and NoIMP/REC had greater liver Cu than NoIMP/CON, which had greater liver Cu than IMP/CON. There was a TM effect for liver Cu on day 70 (P < 0.01) with IND having greater liver Cu than REC and CON. There was a TM effect (P ≤ 0.01) for liver Mn and Se on day 70 where IND had greater Mn and Se than CON, with REC being intermediate. There was a TM effect (P < 0.01) on liver Mn on day 125 where IND had greater liver Mn than CON and greater (P < 0.01) liver Se than CON and REC on day 125, whereas day 125 liver Se was greater in REC vs. CON. Implanted steers had greater (P < 0.01) dry matter intake (DMI), final body weight (BW), overall average daily gain (ADG), G:F, and hot carcass weight (HCW) than NoIMP. Overall DMI was affected by TM (P < 0.01) with REC and IND being greater than CON. There was a TM effect for carcass-adjusted final BW, ADG, and DMI (P ≥ 0.03) and a tendency for TM to affect adjusted G:F (P = 0.07). There was a TM effect (P = 0.03) for HCW where IND was greater than CON and REC. There was a GS × TM (P = 0.02) for ribeye area (REA); within IMP, CON were greater than IND, whereas REC were intermediate while NoIMP had smaller REA, regardless of TM supplementation. Additional research is needed to better determine trace mineral requirements of finishing beef steers for optimal performance.
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Affiliation(s)
| | | | - Daniel D Loy
- Department of Animal Science, Iowa State University, Ames, IA
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297
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Okeke U, Otchere R, Gultneh Y, Butcher RJ. Crystal structure of tetra-kis-(μ 2-( E)-2,4-di-bromo-6-{[2-(pyridin-2-yl)eth-yl]imino-meth-yl}phen-olato)trizinc bis-(perchlorate) aceto-nitrile disolvate. Acta Crystallogr E Crystallogr Commun 2018; 74:1380-1383. [PMID: 30225136 PMCID: PMC6127704 DOI: 10.1107/s2056989018012100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 08/26/2018] [Indexed: 11/23/2022]
Abstract
The title compound, [Zn3(C14H11Br2N2O)4](ClO4)2·2CH3CN, crystallizes as a symmetrical trinuclear cation with all three metal atoms being located on a twofold rotation axis. It contains a tetra-hedral ZnII atom that bridges two six-coordinate ZnII atoms. The complex contains N- and O-donor atoms of four tridentate 2,4-di-bromo-6-{[2-(pyridin-2-yl)eth-yl]imino-meth-yl}phenolate ligands. The ratio of ZnII atoms to ligands is 3:4. The two terminal ZnII cations adopt distorted octa-hedral geometries and the central ZnII cation adopts a distorted tetra-hedral geometry. In the cation there are π-π inter-actions between the di-bromo-phenyl rings, as well as halogen-bonding inter-actions between the di-bromo-phenyl rings in the cation, which stabilize its conformation. In addition, there are C-H⋯O inter-actions between the anions and both the cations and solvent mol-ecules as well as C-H⋯N inter-actions between the cation and solvent mol-ecules. These inter-species inter-actions link the cations, anions and solvent mol-ecules into a complex three-dimensional array.
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Affiliation(s)
- Ugochukwu Okeke
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| | - Raymond Otchere
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| | - Yilma Gultneh
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
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298
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Jeyaharan D, Brackstone C, Schouten J, Davis P, Dixon AM. Characterisation of the Carboxypeptidase G2 Catalytic Site and Design of New Inhibitors for Cancer Therapy. Chembiochem 2018; 19:1959-1968. [PMID: 29968955 DOI: 10.1002/cbic.201800186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Indexed: 11/08/2022]
Abstract
The enzyme carboxypeptidase G2 (CPG2) is used in antibody-directed enzyme prodrug therapy (ADEPT) to catalyse the formation of an active drug from an inert prodrug. Free CPG2 in the bloodstream must be inhibited before administration of the prodrug in order to avoid a systemic reaction in the patient. Although a few small-molecule CPG2 inhibitors have been reported, none has been taken forward thus far. This lack of progress is due in part to a lack of structural understanding of the CPG2 active site as well as the absence of small molecules that can block the active site whilst targeting the complex for clearance. The work described here aimed to address both areas. We report the structural/functional impact of extensive point mutation across the putative CPG2 catalytic site and adjacent regions for the first time, revealing that residues outside the catalytic region (K208A, S210A and T357A) are crucial to enzyme activity. We also describe novel molecules that inhibit CPG2 whilst maintaining the accessibility of galactosylated moieties aimed at targeting the enzyme for clearance. This work acts as a platform for the future development of high-affinity CPG2 inhibitors that occupy new chemical space and will advance the safe application of ADEPT in cancer treatment.
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Affiliation(s)
| | - Carla Brackstone
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - James Schouten
- Mologic Ltd, Bedford Technology Park, Thurleigh, Bedford, MK44 2YP, UK
| | - Paul Davis
- Mologic Ltd, Bedford Technology Park, Thurleigh, Bedford, MK44 2YP, UK
| | - Ann M Dixon
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
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299
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Nikolic MV, Mijajlovic MZ, Tomovic DL, Bukonjic AM, Jevtic VV, Ratkovic ZR, Trifunovic SR, Radic GP. Synthesis and Characterization of Zinc(II)-Complexes with S-Alkyl Derivatives of Thiosalicylic Acid. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2018. [DOI: 10.1515/sjecr-2017-0005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
New zinc(II)-complexes with S-alkyl derivatives of thiosalicylic acid (alkyl = benzyl-(L1), methyl-(L2), ethyl-(L3), propyl-(L4), butyl-(L5)) have been synthesized and characterized by elemental microanalysis, IR spectroscopy, and 1H and 13C NMR spectroscopy. The S-alkyl derivatives of thiosalicylic acid were prepared by alkylation of thiosalicylic acid by adding alkyl halides to an alkaline water-ethanol solution, while the corresponding zinc(II)-complexes were obtained via the direct reaction of ZnCl2 with S-alkyl derivatives of thiosalicylic acid in water. Based on the microanalysis results and the IR and NMR spectra of the S-alkyl derivatives of thiosalicylic acid and the corresponding zinc(II)-complexes, we concluded that the ligands are bidentately coordinated to the zinc(II)-ion.
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Affiliation(s)
- Milos V. Nikolic
- University of Kragujevac , Serbia , Faculty of Medical Sciences, Department of Pharmacy
| | - Marina Z. Mijajlovic
- University of Kragujevac , Serbia , Faculty of Medical Sciences, Department of Pharmacy
| | - Dusan Lj. Tomovic
- University of Kragujevac , Serbia , Faculty of Medical Sciences, Department of Pharmacy
| | - Andriana M. Bukonjic
- University of Kragujevac , Serbia , Faculty of Medical Sciences, Department of Pharmacy
| | - Verica V. Jevtic
- University of Kragujevac , Serbia , Faculty of Science, Department of Chemistry
| | - Zoran R. Ratkovic
- University of Kragujevac , Serbia , Faculty of Science, Department of Chemistry
| | | | - Gordana P. Radic
- University of Kragujevac , Serbia , Faculty of Medical Sciences, Department of Pharmacy
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300
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Fan Z, Chang Y, Cui C, Sun L, Wang DH, Pan Z, Zhang M. Near infrared fluorescent peptide nanoparticles for enhancing esophageal cancer therapeutic efficacy. Nat Commun 2018; 9:2605. [PMID: 29973582 PMCID: PMC6031624 DOI: 10.1038/s41467-018-04763-y] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 05/14/2018] [Indexed: 02/06/2023] Open
Abstract
Various types of nanoparticles have been proposed for targeted drug delivering, imaging, and tracking of therapeutic agents. However, highly biocompatible nanoparticles with structure-induced fluorescence and capability to conjugate with biomarkers and drugs remain lacking. This research proposes and synthesizes fluorescent nanoparticles (f-PNPs) assembled by cyclic peptides to combine imaging and drug delivering for esophageal cancer (EC). To achieve tumor targeting, f-PNPs are first conjugated with RGD moieties to selectively target EC cells via αvβ3 integrin; the nanoparticles are then embedded with epirubicin (EPI). Cell viability assays and analysis of tissue histology reveal that EPI-loaded RGD-f-PNPs (RGD-f-PNPs/EPI) led to significantly reduced cardiotoxicity and improved anti-tumor activity compared to EPI alone. Moreover, the drug delivery to tumor sites and therapeutic responses could be monitored with near-infrared fluorescence using RGD-f-PNPs/EPI. This unique nanoparticle system may lead to potential approaches for bioorganic fluorescence-based delivering, imaging, and drug release tracking.
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Affiliation(s)
- Zhen Fan
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
- Institute for Advanced Study, Tongji University, Shanghai, 200092, China
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH, 43210, USA
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, OH, 43210, Columbus, Ohio, USA
- Comprehensive Cancer Center, The Ohio State University, 43210, Columbus, OH, USA
| | - Yan Chang
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Chaochu Cui
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX, 76019, USA
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 510060, Guangzhou, China
- Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, 453003, Xinxiang, Henan, China
| | - Leming Sun
- School of Life Sciences, Northwestern Polytechnical University, 710065, Xi'an, China
| | - David H Wang
- Department of Internal Medicine, Esophageal Diseases Center, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
- VA North Texas Health Care System, Dallas, TX, 75216, USA
| | - Zui Pan
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX, 76019, USA.
| | - Mingjun Zhang
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH, 43210, USA.
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, OH, 43210, Columbus, Ohio, USA.
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, 43210, USA.
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