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Xu M, Gao P, Gao Y, Xiong SJ, Chen HQ, Shen XX. Impacts of microplastic type on the fate of antibiotic resistance genes and horizontal gene transfer mechanism during anaerobic digestion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121090. [PMID: 38772228 DOI: 10.1016/j.jenvman.2024.121090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/12/2024] [Accepted: 05/03/2024] [Indexed: 05/23/2024]
Abstract
Microplastics (MPs) and antibiotic resistance genes (ARGs) are important pollutants in waste activated sludge (WAS), but their interactions during anaerobic digestion (AD) still need to be further explored. This study investigated variations in ARGs, mobile genetic elements (MGEs), and host bacteria during AD under the pressure of polyamide (PA), polyethylene (PE), and polypropylene (PP). The results showed that the MPs increased methane production by 11.7-35.5%, and decreased ARG abundance by 5.6-24.6%. Correlation analysis showed that the decrease of MGEs (plasmid, prophage, etc.) promoted the decrease of the abundance of multidrug, aminoglycoside and tetracycline resistance genes. Metagenomic annotation revealed that the reduction of key host bacteria (Arenimonas, Lautropia, etc.) reduced the abundance of major ARGs (rsmA, rpoB2, etc.). Moreover, PP MPs contributed to a reduction in the abundance of functional genes related to the production of reactive oxygen species, ATP synthesis, and cell membrane permeability, which was conducive to reducing the potential for horizontal gene transfer of ARGs. These findings provide insights into the treatment of organic waste containing MPs.
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Affiliation(s)
- Ming Xu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Peng Gao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Yuan Gao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Shi-Jin Xiong
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Hao-Qiang Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Xiao-Xiao Shen
- Institute of Water Science and Technology, Hohai University, Nanjing, 210098, China; The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing, 210098, China.
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2
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West S, Monteyne AJ, Whelehan G, Abdelrahman DR, Murton AJ, Finnigan TJ, Mandalari G, Booth C, Wilde PJ, Stephens FB, Wall BT. High-Moisture Extrusion of a Dietary Protein Blend Impairs In Vitro Digestion and Delays In Vivo Postprandial Plasma Amino Acid Availability in Humans. J Nutr 2024:S0022-3166(24)00295-5. [PMID: 38797481 DOI: 10.1016/j.tjnut.2024.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/26/2024] [Accepted: 05/21/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND Industrial processing can alter the structural complexity of dietary proteins and, potentially, their digestion and absorption upon ingestion. High-moisture extrusion (HME), a common processing method used to produce meat alternative products, affects in vitro digestion, but human data are lacking. We hypothesized that HME of a mycoprotein/pea protein blend would impair in vitro digestion and in vivo postprandial plasma amino acid availability. METHODS In Study A, 9 healthy volunteers completed 2 experimental trials in a randomized, double-blind, crossover design. Participants consumed a beverage containing 25 g protein from a "dry" blend (CON) of mycoprotein/pea protein (39%/61%) or an HME content-matched blend (EXT). Arterialized venous blood samples were collected in the postabsorptive state and regularly over a 5-h postprandial period to assess plasma amino acid concentrations. In Study B, in vitro digestibility of the 2 beverages were assessed using bicinchoninic acid assay and optical fluorescence microscopy at baseline and during and following gastric and intestinal digestion using the INFOGEST model of digestion. RESULTS Protein ingestion increased plasma total, essential (EAA), and branched-chain amino acid (BCAA) concentrations (time effect, P < 0.0001) but more rapidly and to a greater magnitude in the CON compared with the EXT condition (condition × time interaction, P < 0.0001). This resulted in greater plasma availability of EAA and BCAA concentrations during the early postprandial period (0-150 min). These data were corroborated by the in vitro approach, which showed greater protein availability in the CON (2150 ± 129 mg/mL) compared with the EXT (590 ± 41 mg/mL) condition during the gastric phase. Fluorescence microscopy revealed clear structural differences between the 2 conditions. CONCLUSIONS These data demonstrate that HME delays in vivo plasma amino acid availability following ingestion of a mycoprotein/pea protein blend. This is likely due to impaired gastric phase digestion as a result of HME-induced aggregate formation in the pea protein. This trial was registered at clinicaltrials.gov as NCT05584358.
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Affiliation(s)
- Sam West
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom; Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom; NIHR Oxford Biomedical Research Centre, Oxford, University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Alistair J Monteyne
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Gráinne Whelehan
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Doaa R Abdelrahman
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, United States; Sealy Center on Aging, University of Texas Medical Branch, Galveston, TX, United States
| | - Andrew J Murton
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, United States; Sealy Center on Aging, University of Texas Medical Branch, Galveston, TX, United States
| | | | - Giuseppina Mandalari
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Messina, Italy
| | - Catherine Booth
- Quadram Institute Bioscience, Norwich Research Park, Norwich, Norfolk, United Kingdom
| | - Peter J Wilde
- Quadram Institute Bioscience, Norwich Research Park, Norwich, Norfolk, United Kingdom
| | - Francis B Stephens
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Benjamin T Wall
- Department of Public Health and Sport Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom.
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3
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Eigenfeld M, Lupp KFM, Schwaminger SP. Role of Natural Binding Proteins in Therapy and Diagnostics. Life (Basel) 2024; 14:630. [PMID: 38792650 PMCID: PMC11122601 DOI: 10.3390/life14050630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/02/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
This review systematically investigates the critical role of natural binding proteins (NBPs), encompassing DNA-, RNA-, carbohydrate-, fatty acid-, and chitin-binding proteins, in the realms of oncology and diagnostics. In an era where cancer continues to pose significant challenges to healthcare systems worldwide, the innovative exploration of NBPs offers a promising frontier for advancing both the diagnostic accuracy and therapeutic efficacy of cancer management strategies. This manuscript provides an in-depth examination of the unique mechanisms by which NBPs interact with specific molecular targets, highlighting their potential to revolutionize cancer diagnostics and therapy. Furthermore, it discusses the burgeoning research on aptamers, demonstrating their utility as 'nucleic acid antibodies' for targeted therapy and precision diagnostics. Despite the promising applications of NBPs and aptamers in enhancing early cancer detection and developing personalized treatment protocols, this review identifies a critical knowledge gap: the need for comprehensive studies to understand the diverse functionalities and therapeutic potentials of NBPs across different cancer types and diagnostic scenarios. By bridging this gap, this manuscript underscores the importance of NBPs and aptamers in paving the way for next-generation diagnostics and targeted cancer treatments.
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Affiliation(s)
- Marco Eigenfeld
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6, 8010 Graz, Austria
| | - Kilian F. M. Lupp
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6, 8010 Graz, Austria
| | - Sebastian P. Schwaminger
- Otto-Loewi Research Center, Division of Medicinal Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6, 8010 Graz, Austria
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
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4
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Nikitina M, Khramtsov P, Bochkova M, Rayev M. Development and performance of NLISA for C-reactive protein detection based on Prussian blue nanoparticle conjugates. Anal Bioanal Chem 2024; 416:3097-3106. [PMID: 38635074 DOI: 10.1007/s00216-024-05268-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/04/2024] [Accepted: 03/22/2024] [Indexed: 04/19/2024]
Abstract
Prussian blue nanoparticles (PBNPs), also called nanozymes, are very attractive as an alternative to horseradish peroxidase in immunoassay development due to their simple and low-cost synthesis, stability and high catalytic activity. Today, there is a method for highly effective PBNP synthesis based on the reduction of an FeCl3/K3[Fe(CN)6] mixture by hydrogen peroxide. However, there is a lack of research showcasing the use of these highly effective PBNPs for specific target detection in clinical settings, as well as a lack of comprehensive comparisons with conventional methods. To address this gap, we prepared diagnostic reagents based on highly effective PBNPs by modifying them using gelatin and attaching anti-C-reactive protein (CRP) monoclonal antibodies through cross-linking with glutaraldehyde. As a result, a solid-phase colorimetric immunoassay in a sandwich format (nanozyme-linked immunosorbent assay [NLISA]) using highly effective PBNPs as a label for CRP detection has been demonstrated for the first time. The assay demonstrated a detection limit of 21.8 pg/mL, along with acceptable selectivity, precision (CV < 25%) and accuracy (the recovery index was within acceptable limits (75-125%) for LLOQ /ULOQ range. The analytical performance of this method is on par with sensitive assays developed in the last 5 years. Notably, the results obtained from NLISA align with those from an immunofluorescence assay conducted by a certified clinical laboratory. Furthermore, this study underscores the technological challenges involved in constructing an analysis that necessitate further exploration.
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Affiliation(s)
- Maria Nikitina
- Institute of Ecology and Genetics of Microorganisms, Urals Branch of RAS, Perm, Russia.
- Biology Faculty, Perm State University, Perm, Russia.
| | - Pavel Khramtsov
- Institute of Ecology and Genetics of Microorganisms, Urals Branch of RAS, Perm, Russia
- Biology Faculty, Perm State University, Perm, Russia
| | - Maria Bochkova
- Institute of Ecology and Genetics of Microorganisms, Urals Branch of RAS, Perm, Russia
- Biology Faculty, Perm State University, Perm, Russia
| | - Mikhail Rayev
- Institute of Ecology and Genetics of Microorganisms, Urals Branch of RAS, Perm, Russia
- Biology Faculty, Perm State University, Perm, Russia
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5
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Zairov RR, Kornev TA, Akhmadeev BS, Dovzhenko AP, Vasilyev VA, Kholin KV, Nizameeva GR, Ismaev IE, Mukhametzyanov TA, Liubina АP, Voloshina AD, Mustafina AR. Expanding Mn 2+ loading capacity of BSA via mild non-thermal denaturing and cross-linking as a tool to maximize the relaxivity of water protons. Int J Biol Macromol 2024; 266:131338. [PMID: 38569987 DOI: 10.1016/j.ijbiomac.2024.131338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/05/2024]
Abstract
Development of nanoparticles (NPs) serving as contrast enhancing agents in MRI requires a combination of high contrasting effect with the biosafety and hemocompatibility. This work demonstrates that bovine serum albumin (BSA) molecules bound to paramagnetic Mn2+ ions are promising building blocks of such NPs. The desolvation-induced denaturation of BSA bound with Mn2+ ions followed by the glutaraldehyde-facilitated cross-linking provides the uniform in size 102.0 ± 0.7 nm BSA-based nanoparticles (BSA-NPs) loaded with Mn2+ ions, which are manifested in aqueous solutions as negatively charged spheres with high colloid stability. The optimal loading of Mn2+ ions into BSA-NPs provides maximum values of longitudinal and transverse relaxivity at 98.9 and 133.6 mM-1 s-1, respectively, which are among the best known from the literature. The spin trap EPR method indicates that Mn2+ ions bound to BSA-NPs exhibit poor catalytic activity in the Fenton-like reaction. On the contrary, the presence of BSA-NPs has an antioxidant effect by preventing the accumulation of hydroxyl radicals produced by H2O2. The NPs exhibit remarkably low hemolytic activity and hemagglutination can be avoided at concentrations lower than 110 μM. Thus, BSA-NPs bound with Mn2+ ions are promising candidates for combining high contrast effect with biosafety and hemocompatibility.
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Affiliation(s)
- Rustem R Zairov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation; Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation.
| | - Timur A Kornev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation; Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation
| | - Bulat S Akhmadeev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation; Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation
| | - Alexey P Dovzhenko
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation; Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation
| | - Vadim A Vasilyev
- Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation
| | - Kirill V Kholin
- Kazan National Research Technological University, 68, K. Marx str., 420015 Kazan, Russian Federation
| | - Guliya R Nizameeva
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation; Kazan National Research Technological University, 68, K. Marx str., 420015 Kazan, Russian Federation
| | - Ildus E Ismaev
- A.N. Tupolev Kazan Research Technological University, Kazan 420015, Russia
| | - Timur A Mukhametzyanov
- Aleksander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, 1/29 Lobachevskogo str., Russian Federation
| | - Аnna P Liubina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Alexandra D Voloshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - Asiya R Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
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6
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Dubey T, Bhanukiran K, Hemalatha S. Development of phytosterol-loaded silver nanoparticles for ameliorating haemorrhoidal complications via the AMPK pathway-a mechanistic approach. Biomed Mater 2024; 19:035030. [PMID: 38518371 DOI: 10.1088/1748-605x/ad3703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 03/22/2024] [Indexed: 03/24/2024]
Abstract
The aim of the current study was to synthesize silver nanoparticles (PLSNPs) using green technology by means of phytosterol-enriched fractions fromBlumea laceraextracts (EAF) and evaluate their toxicological and anti-haemorrhoidal potential. The average size of the synthesized particles was found to be 85.64 nm by scanning electron microscopy and transmission electron microscopy. Energy dispersive spectroscopy showed the elemental composition of PLSNPs to be 12.59% carbon and 87.41% silver, indicating the capping of phytochemicals on the PLSNPs. The PLSNPs were also standardized for total phytosterol content using chemical methods and high-perfromance liquid chromatography. The PLSNPs were found to be safe up to 1000 mg kg-1as no toxicity was observed in the acute and sub-acute toxicity studies performed as per OECD guidelines. After the induction of haemorrhoids, experimental animals were treated with different doses of EAF, PLSNPs and a standard drug (Pilex) for 7 d, and on the eighth day the ameliorative potential was assessed by evaluating the haemorrhoidal (inflammatory severity index, recto-anal coefficient) and biochemical (tumour necrosis factor-alpha and interleukin-6) parameters and histology of the recto-anal tissue. The results showed that treatment with PLSNPs and Pilex significantly (p< 0.05) reduced haemorrhoidal and biochemical parameters. This was further supported by restoration of altered antioxidant status. Further, a marked reduction in the inflammatory zones along with minimal dilated blood vessels was observed in the histopathological study. The results of molecular docking studies also confirmed the amelioration of haemorrhoids via AMP-activated protein kinase (AMPK)-mediated reduction of inflammation and endothelin B receptor modification by PLSNPs. In conclusion, PLSNPs could be a good alternative for the management of haemorrhoids.
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Affiliation(s)
- Tarkeshwar Dubey
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Kancharla Bhanukiran
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Siva Hemalatha
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
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7
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Marques AC, Costa PC, Velho S, Amaral MH. Analytical Techniques for Characterizing Tumor-Targeted Antibody-Functionalized Nanoparticles. Life (Basel) 2024; 14:489. [PMID: 38672759 PMCID: PMC11051252 DOI: 10.3390/life14040489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The specific interaction between cell surface receptors and corresponding antibodies has driven opportunities for developing targeted cancer therapies using nanoparticle systems. It is challenging to design and develop such targeted nanomedicines using antibody ligands, as the final nanoconjugate's specificity hinges on the cohesive functioning of its components. The multicomponent nature of antibody-conjugated nanoparticles also complicates the characterization process. Regardless of the type of nanoparticle, it is essential to perform physicochemical characterization to establish a solid foundation of knowledge and develop suitable preclinical studies. A meaningful physicochemical evaluation of antibody-conjugated nanoparticles should include determining the quantity and orientation of the antibodies, confirming the antibodies' integrity following attachment, and assessing the immunoreactivity of the obtained nanoconjugates. In this review, the authors describe the various techniques (electrophoresis, spectroscopy, colorimetric assays, immunoassays, etc.) used to analyze the physicochemical properties of nanoparticles functionalized with antibodies and discuss the main results.
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Affiliation(s)
- Ana Camila Marques
- UCIBIO—Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Paulo C. Costa
- UCIBIO—Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Sérgia Velho
- i3S—Institute for Research and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
- IPATIMUP—Institute of Molecular Pathology and Immunology of the University of Porto, 4200-135 Porto, Portugal
| | - Maria Helena Amaral
- UCIBIO—Applied Molecular Biosciences Unit, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
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8
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Ma B, Niu J, Zhu H, Chi H, Lu Z, Lu F, Zhu P. Engineering substrate specificity of quinone-dependent dehydrogenases for efficient oxidation of deoxynivalenol to 3-keto-deoxynivalenol. Int J Biol Macromol 2024; 264:130484. [PMID: 38431002 DOI: 10.1016/j.ijbiomac.2024.130484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
The oxidative reaction of Fusarium mycotoxin deoxynivalenol (DON) using the dehydrogenase is a desirable strategy and environmentally friendly to mitigate its toxicity. However, a critical issue for these dehydrogenases shows widespread substrate promiscuity. In this study, we conducted pocket reshaping of Devosia strain A6-243 pyrroloquinoline quinone (PQQ)-dependent dehydrogenase (DADH) on the basis of protein structure and kinetic analysis of substrate libraries to improve preference for particular substrate DON (10a). The variant presented an increased preference for substrate 10a and enhanced catalytic efficiency. A 4.7-fold increase in preference for substrate 10a was observed. Kinetic profiling and molecular dynamics (MD) simulations provided insights into the enhanced substrate specificity and activity. Moreover, the variant exhibited stronger conversion of substrate 10a to 3-keto-DON compared to the wild DADH. Overall, this study provides a feasible protocol for the redesign of PQQ-dependent dehydrogenases with favourable substrate specificity and catalytic activity, which is desperately needed for DON antidote development.
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Affiliation(s)
- Bin Ma
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiafeng Niu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Huibing Chi
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
| | - Ping Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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9
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Peng F, Hong J, Cui J, An YN, Guo Q, Shen Q, Cheng F, Xue YP, Zheng YG. Improvement of an enzymatic cascade synthesis of nicotinamide mononucleotide via protein engineering and reaction-process reinforcement. Biotechnol J 2024; 19:e2300748. [PMID: 38403401 DOI: 10.1002/biot.202300748] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/27/2024]
Abstract
Enzymatic synthesis of β-nicotinamide mononucleotide (NMN) from D-ribose has garnered widespread attention due to its cheap material, the use of mild reaction conditions, and the ability to produce highly pure products with the desired optical properties. However, the overall NMN yield of this method is impeded by the low activity of rate-limiting enzymes. The ribose-phosphate diphosphokinase (PRS) and nicotinamide phosphoribosyltransferase (NAMPT), that control the rate of the reaction, were engineered to improve the reaction efficacy. The actives of mutants PRS-H150Q and NAMPT-Y15S were 334% and 57% higher than that of their corresponding wild-type enzymes, respectively. Furthermore, by adding pyrophosphatase, the byproduct pyrophosphate which can inhibit the activity of NAMPT was degraded, leading to a 6.72% increase in NMN yield. Following with reaction-process reinforcement, a high yield of 8.10 g L-1 NMN was obtained after 3 h of reaction, which was 56.86-fold higher than that of the stepwise reaction synthesis (0.14 g L-1 ), indicating that the in vitro enzymatic synthesis of NMN from D-ribose and niacinamide is an economical and feasible route.
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Affiliation(s)
- Feng Peng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Jian Hong
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Jie Cui
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Ya-Ni An
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Qian Guo
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Qi Shen
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Feng Cheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Ya-Ping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, PR China
- National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, PR China
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Liang M, Zhang Y, Wang M, Wen Z, Chen C, Bu Y, Lu M, Song X, Xu L, Li X, Yan R. Haemonchus contortus HcL6 promoted the Th9 immune response in goat PBMCs by activating the STAT6/PU.1/NF-κB pathway. Vet Res 2023; 54:80. [PMID: 37740213 PMCID: PMC10517550 DOI: 10.1186/s13567-023-01214-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/28/2023] [Indexed: 09/24/2023] Open
Abstract
Th9 cells play a crucial role in parasite immunity. The development of Th9 cells is facilitated by several cytokines. Key transcription factors, such as STAT6, STAT5, and PU.1, are known to enhance IL-9 expression during the Th9 immune response. NF-κB-mediated transduction pathways participate in the induction of IL-9. In a previous study, we unveiled a unique ribosomal protein derived from Haemonchus contortus excretory-secretory proteins (HcESPs) that interact with host Th9 cells. In the present study, the effects of the Haemonchus contortus ribosomal protein L6 domain DE-containing protein (HcL6) on IL-9 secretion, Th9 differentiation, and IL-9 transcription were assessed by employing ELISA, flow cytometry, and qPCR methodologies. The observations revealed the transcriptional upregulation of several key genes within the Th9 immune response pathway. Moreover, silencing STAT6, PU.1, and NF-κB was found to attenuate the Th9 immune response. In this study, we unveiled the Th9 immune response-inducing capabilities of HcL6 and elucidated some of its underlying mechanisms. These findings suggest that HcL6 is an immunostimulatory antigen capable of inducing the Th9 immune response. These insights could prove instrumental in identifying potential candidate antigens for the development of immunoprophylactic strategies against H. contortus infections.
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Affiliation(s)
- Meng Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yang Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Mingyue Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Zhaohai Wen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Cheng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yongqian Bu
- Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang, 212400, Jiangsu, China
| | - Mingmin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Lixin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xiangrui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Ruofeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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11
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Rex M C, Debroy A, Nirmala MJ, Mukherjee A. Ecotoxicological significance of bio-corona formation on micro/nanoplastics in aquatic organisms. RSC Adv 2023; 13:22905-22917. [PMID: 37520083 PMCID: PMC10375451 DOI: 10.1039/d3ra04054b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023] Open
Abstract
The unsustainable manufacturing, utilization and inadequate handling of plastics have led to a surge in global plastic pollution. In recent times, there has been increasing concern about the plausible hazards associated with exposure to micro/nanoplastics (M/NPs). As aquatic systems are considered to be the likely sink for M/NPs, it is crucial to comprehend their environmental behavior. The bioavailability, toxicity and fate of M/NPs in the environment are predominantly dictated by their surface characteristics. In the aquatic environment, M/NPs are prone to be internalized by aquatic organisms. This may facilitate their interaction with a diverse array of biomolecules within the organism, resulting in the formation of a biocorona (BC). The development of BC causes modifications in the physicochemical attributes of the M/NPs including changes to their size, stability, surface charge and other properties. This review details the concept of BC formation and its underlying mechanism. It provides insight on the analytical techniques employed for characterizing BC formation and addresses the associated challenges. Further, the eco-toxicological implications of M/NPs and the role of BC in modifying their potential toxicity on aquatic organisms is specified. The impact of BC formation on the fate and transport of M/NPs is discussed. A concise outlook on the future perspectives is also presented.
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Affiliation(s)
- Camil Rex M
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore 632014 India
| | - Abhrajit Debroy
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore 632014 India
| | - M Joyce Nirmala
- Department of Chemical Engineering, Indian Institute of Technology Madras Chennai 600036 India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology Vellore 632014 India
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12
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Bakhsh A, Park J, Baritugo KA, Kim B, Sil Moon S, Rahman A, Park S. A holistic approach toward development of plant-based meat alternatives through incorporation of novel microalgae-based ingredients. Front Nutr 2023; 10:1110613. [PMID: 37229478 PMCID: PMC10203216 DOI: 10.3389/fnut.2023.1110613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 04/12/2023] [Indexed: 05/27/2023] Open
Abstract
This study explored the changes in the physiochemical, textural, sensory, and functional characteristics of plant-based meat (PBM) after incorporating novel plant-based ingredients including spirulina (SPI), duck Weed (DW), and yellow Chlorella (YC). In the chromaticity evaluation, the YC group (YCI YC2, and YC3%) displayed significant differences (p < 0.05) in lightness (L*) indices as compared to the control. Whereas, based on concertation gradient of SPI microalgae (SP0.5, SP0.7, and SP1%) incorporated into PBM patties demonstrated that SPI 1 had the lowest values (p < 0.05) in redness (a*) and yellowness (b*) followed by SPI 0.7 and SPI 0.5% concentration, respectively. The concentration gradient of the YC group indicated that YC3 was intended to be the highest crude fat value followed by YC2 and YCI. The ash content in PBM patties increased considerably (p < 0.05) as the concentration level of microalgae advanced in all treated groups. Based on the concentration level of YC incorporated microalgae into PBM patties indicated that YC 3 had the highest (p < 0.05) gumminess and chewiness while YC 1 had the lowest reported values in terms of gumminess and chewiness. Moreover, springiness and cohesiveness showed considerable differences between SPI and YC groups. In the sensory evaluation, SPI 1 showed the lowest value only in color and appearance (p < 0.05), conversely, the other sensory parameters were non-significant among all treatment groups (p > 0.05). The micronutrient in PBM presented an irregular pattern after incorporating various ingredients. However, levels were higher (p < 0.05) in the DW group (DW 0.5 DW 0.7, and DW% 1) than those in the other groups. Moreover, the SPI and YC groups showed detectable levels of diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity with, SP 1 showing the highest level of antioxidant activity. Acknowledging the limited research on PBM production, extraction technologies, and selecting various novel suitable ingredients in meat substitutes. Hence, to fill this knowledge gap an attempt has been made to incorporate various concentrations of microalgae including SPI, YC, and DW to enhance the quality and functionality of meat alternatives. To the best of our knowledge, this is the first report that describes the physiochemical, textural, sensory, and nutritional attributes of PBM incorporated with novel microalgae. Collectively these results indicate that the incorporation of SPI, DW, and YC may improve the quality of PBM without showing deleterious outcomes on the quality and functionality of the ultimate PBM products.
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Affiliation(s)
- Allah Bakhsh
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, Republic of Korea
| | - Juhee Park
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, Republic of Korea
| | - Kei Anne Baritugo
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, Republic of Korea
| | - Bosung Kim
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, Republic of Korea
| | - Sung Sil Moon
- Healthy Food Technology, Sunjin Co., Ltd., Icheon, Republic of Korea
| | - Attaur Rahman
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Sungkwon Park
- Department of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul, Republic of Korea
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13
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Zhao P, Huang X, Li Y, Huo X, Feng Q, Zhao X, Xu C, Wang J. An artificialed protein corona coating the surface of magnetic nanoparicles:a simple and efficient method for label antibody. Heliyon 2023; 9:e13860. [PMID: 36923872 PMCID: PMC10008981 DOI: 10.1016/j.heliyon.2023.e13860] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/06/2023] [Accepted: 02/14/2023] [Indexed: 03/05/2023] Open
Abstract
Background Protein Corona (PC) of nanoparticles is a structure which composed of one or more layers of proteins adsorbed on the surface of nanomaterials, and the formation of PC is a universal process of spontaneous randomness. We take advantage of the formation principle of the PC, developed a simple and efficient method for label protein to nanoparticles. Methods The artificialed protein corona (APC) on the surface of nanoparticles was synthesized via the artificialed methods of desolvation aggregation and crosslinking with control. Results The dosage of precipitator and the ratio of protein to magnetic nanoparticles (MNPs)(particle size: 3 nm) were optimized, and the core-shell nanoparticles with narrow particle size (particle size: 10 nm) distribution were obtained. The MNPs with APC were characterized by transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). Additionally, a hemolysis test on prepared MNPs was conducted with APC. The presence of APC coating on the surface of MNPs showed an improving effect to reduce the cytotoxicity. Cellular toxicity of MNPs with APC was also investigated on HFF1 cell lines. And the cells survival in the presence of APC coated MNPs and display neither reduced metabolism nor cytostatic effect. The functional test of the MNPs with APC showed that proteins can be modified and labeled onto magnetic nanoparticles and retain their original activity. Conclusions This marking method is gentle and effective. And the properties of the APC propose MNPs as a promising candidate for multifunctional biomedical applications.
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Affiliation(s)
- Penghua Zhao
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Xiaoyan Huang
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Yaping Li
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Xueping Huo
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Qing Feng
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Xiangrong Zhao
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
| | - Cuixiang Xu
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, 710068, China
- Corresponding author. Shaanxi Provincial People's Hospital, 256 West Youyi Road, Xi'an, 710068, China.
| | - Jianhua Wang
- Research Center of Cell Immunological Engineering and Technology of Shaanxi Province, Central Lab of Shaanxi Provincial People's Hospital, Xi'an, 710068, China
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, 710068, China
- Corresponding author. Shaanxi Provincial People's Hospital, 256 West Youyi Road, Xi'an, 710068, China.
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14
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Sommonte F, Arduino I, Iacobazzi RM, Tiboni M, Catalano F, Marotta R, Di Francesco M, Casettari L, Decuzzi P, Lopedota AA, Denora N. Microfluidic assembly of "Turtle-Like" shaped solid lipid nanoparticles for lysozyme delivery. Int J Pharm 2023; 631:122479. [PMID: 36509224 DOI: 10.1016/j.ijpharm.2022.122479] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/15/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
After two decades of research in the field of nanomedicine, nanoscale delivery systems for biologicals are becoming clinically relevant tools. Microfluidic-based fabrication processes are replacing conventional techniques based on precipitation, emulsion, and homogenization. Here, the focus is on solid lipid nanoparticles (SLNs) for the encapsulation and delivery of lysozyme (LZ) as a model biologic. A thorough analysis was conducted to compare conventional versus microfluidic-based production techniques, using a 3D-printed device. The efficiency of the microfluidic technique in producing LZ-loaded SLNs (LZ SLNs) was demonstrated: LZ SLNs were found to have a lower size (158.05 ± 4.86 nm vs 180.21 ± 7.46 nm) and higher encapsulation efficacy (70.15 ± 1.65 % vs 53.58 ± 1.13 %) as compared to particles obtained with conventional methods. Cryo-EM studies highlighted a peculiar turtle-like structure on the surface of LZ SLNs. In vitro studies demonstrated that LZ SLNs were suitable to achieve a sustained release over time (7 days). Enzymatic activity of LZ entrapped into SLNs was challenged on Micrococcus lysodeikticus cultures, confirming the stability and potency of the biologic. This systematic analysis demonstrates that microfluidic production of SLNs can be efficiently used for encapsulation and delivery of complex biological molecules.
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Affiliation(s)
- Federica Sommonte
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, Orabona St. 4, 70125 Bari, Italy
| | - Ilaria Arduino
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, Orabona St. 4, 70125 Bari, Italy
| | - Rosa Maria Iacobazzi
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, Orabona St. 4, 70125 Bari, Italy
| | - Mattia Tiboni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza del Rinascimento 6, 61029 Urbino, Italy
| | - Federico Catalano
- Electron Microscopy Facility, Fondazione Istituto Italiano di Tecnologia, Morego St. 30, 16163 Genoa, Italy
| | - Roberto Marotta
- Electron Microscopy Facility, Fondazione Istituto Italiano di Tecnologia, Morego St. 30, 16163 Genoa, Italy
| | - Martina Di Francesco
- Laboratory of Nanotechnology for Precision Medicine, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Luca Casettari
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza del Rinascimento 6, 61029 Urbino, Italy
| | - Paolo Decuzzi
- Laboratory of Nanotechnology for Precision Medicine, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Angela Assunta Lopedota
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, Orabona St. 4, 70125 Bari, Italy
| | - Nunzio Denora
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, Orabona St. 4, 70125 Bari, Italy.
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15
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Dong YQ, Shen JD, Pan L, Huang JH, Liu ZQ, Zheng YG. Mining and Characterization of Thermophilic Glucose Isomerase Based on Virtual Probe Technology. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04349-5. [PMID: 36696038 DOI: 10.1007/s12010-023-04349-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2023] [Indexed: 01/26/2023]
Abstract
Fructose, which is produced by the isomerization of glucose isomerase, is a crucial precursor for the biosynthesis of rare sugars. In this study, thermophilic glucose isomerases (GI) from Caldicellulosiruptor acetigenus (CAGI), Thermoanaerobacter thermocopriae (TTGI), and Thermotoga petrophila (TPGI) were screened from GenBank database by a virtual probe and were successfully expressed in Escherichia coli BL21(DE3). The results of characterization demonstrated that the optimal pH for CAGI and TTGI were 8.0 and were maintained at 80% in a slightly acidic environment. The relative residual activities of CAGI and TTGI were found to be 40.6% and 52.6%, respectively, following an incubation period of 24 h at 90 ℃. Furthermore, CAGI and TTGI exhibited superior catalytic performance that their reaction equilibrium both reached only after an hour at 85 ℃ with 200 g/L glucose, and the highest conversion rates were 54.2% and 54.1%, respectively. This study identifies competitive enzyme candidates for fructose production in the industry with appreciable cost reduction.
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Affiliation(s)
- Yu-Qi Dong
- School of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, People's Republic of China.,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Ji-Dong Shen
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Long Pan
- School of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, People's Republic of China.,Henan Provincial Key Laboratory of Biological Processing and Nutritional Function of Wheat, Zhengzhou, 450001, People's Republic of China
| | - Ji-Hong Huang
- School of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, People's Republic of China. .,Henan Provincial Key Laboratory of Biological Processing and Nutritional Function of Wheat, Zhengzhou, 450001, People's Republic of China.
| | - Zhi-Qiang Liu
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
| | - Yu-Guo Zheng
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
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16
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Teng XN, Wang SC, Zeb L, Dong YS, Xiu ZL. Two-Step Enzymolysis of Antarctic Krill for Simultaneous Preparation of Value-Added Oil and Enzymolysate. Mar Drugs 2023; 21:md21010047. [PMID: 36662220 PMCID: PMC9863247 DOI: 10.3390/md21010047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
Antarctic krill is a crucial marine resource containing plenty of high-valued nutrients. However, krill oil as a single product has been developed by the current solvent extraction with high cost. From the perspective of comprehensive utilization of Antarctic krill, this study proposed a novel two-step enzymolysis-assisted extraction in attempt to produce value-added oil and enzymolysate simultaneously. After two-step chitinase/protease hydrolysis, the lipid yield increased from 2.09% to 4.18%, reaching 112% of Soxhlet extraction. The method greatly improved the yields of main components while reducing the impurity content without further refining. After optimization, the oil contained 246.05 mg/g of phospholipid, 80.96 mg/g of free eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and 0.82 mg/g of astaxanthin. The by-product enzymolysate was abundant in water-soluble proteins (34.35 mg/g), oligopeptides (13.92 mg/g), amino acids (34.24 mg/g), and carbohydrates (5.79 mg/g), which was a good source of functional nutrients. In addition, both oil and enzymolysate showed high antioxidant capacity. This novel method could simultaneously provide oil and enzymolysate amounting for 58.61% of dried krill.
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17
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WANG XX, TAN JN, GAO JM, REN XH, WANG WM, GAO L. Proteolysis of burley tobacco-leaf extracts and antioxidant activity of the hydrolysates. FOOD SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1590/fst.98622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xian-Xian WANG
- Chinese Academy of Agricultural Sciences, China; Chinese Academy of Agricultural Sciences, China
| | | | | | | | | | - Lin GAO
- Chinese Academy of Agricultural Sciences, China
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18
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A Novel 3- O-rhamnoside: 2″- O-xylosyltransferase Responsible for Terminal Modification of Prenylflavonol Glycosides in Epimedium pubescens Maxim. Int J Mol Sci 2022; 23:ijms232416050. [PMID: 36555695 PMCID: PMC9786081 DOI: 10.3390/ijms232416050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/24/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Prenylated flavonol glycosides in Epimedium plants, as key medicinal components, are known to have great pharmaceutical activities for human health. Among the main prenylated flavonol glycosides, the modification mechanism of different sugar moieties is still not well understood. In the current study, a novel prenylated flavonol rhamnoside xylosyltransferase gene (EpF3R2″XylT) was cloned from E. pubescens, and the enzymatic activity of its decoding proteins was examined in vitro with different prenylated flavonol rhamnoside substrates and different 3-O-monosaccharide moieties. Furthermore, the functional and structural domains of EpF3R2″XylT were analyzed by bioinformatic approaches and 3-D protein structure remodeling. In summary, EpF3R2″XylT was shown to cluster with GGT (glycosyltransferase that glycosylates sugar moieties of glycosides) through phylogenetic analysis. In enzymatic analysis, EpF3R2″XylT was proven to transfer xylose moiety from UDP-xylose to prenylated flavonol rhamnoside at the 2″-OH position of rhamnose. The analysis of enzymatic kinetics showed that EpF3R2″XylT had the highest substrate affinity toward icariin with the lowest Km value of 75.96 ± 11.91 mM. Transient expression of EpF3R2″XylT in tobacco leaf showed functional production of EpF3R2″XylT proteins in planta. EpF3R2″XylT was preferably expressed in the leaves of E. pubescens, which is consistent with the accumulation levels of major prenylflavonol 3-O-triglycoside. The discovery of EpF3R2″XylT will provide an economical and efficient alternative way to produce prenylated flavonol trisaccharides through the biosynthetic approach.
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19
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Yan Y, Zhang Y, Gao J, Qin L, Liu F, Zeng W, Wan J. Intracellular and extracellular sources, transformation process and resource recovery value of proteins extracted from wastewater treatment sludge via alkaline thermal hydrolysis and enzymatic hydrolysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158512. [PMID: 36063951 DOI: 10.1016/j.scitotenv.2022.158512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/18/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Excess sludge contains a large amount of protein and can be recycled to prepare industrial foaming agents, foliar fertilizers and other high value-added products. The optimization and effects of sludge protein extraction using the common processes of alkaline thermal hydrolysis (ATH) and enzymatic hydrolysis (EH) have been widely studied. This study focused on the protein extraction mechanisms of ATH and EH by comparing the ratio of intracellular to extracellular proteins extracted and the transformation of protein during the hydrolysis process. The extracellular protein content was 82.6 ± 5.07 mg/g VSS, and the content of intracellular protein extracted using ATH and EH was 376.9 mg/g VSS and 127.9 mg/g VSS, respectively. The ratio of intracellular to extracellular proteins extracted by ATH and EH was 4.5 and 1.5, respectively, indicating that ATH had a much better wall-breaking effect that allowed it to extract abundant intracellular proteins. The protein content obtained from ATH continuously increased over time, and approximately 38 % of proteins were further hydrolyzed to polypeptides. In contrast, the relatively low protein content extracted by EH possibly limited subsequent polypeptide hydrolysis, but subsequent hydrolysis to amino acids was not noticeably affected and was linearly correlated with the amount of protein extracted. An analysis of the recycling convenience and value of extracted proteins showed that the sludge dewatering performance increased by 86.7 % and 45.5 % after ATH and EH treatment, respectively, which was conducive to the subsequent separation of the protein solution. The protein extracted by ATH, with a large amount of peptides, would be beneficial to prepare industrial foaming agents, while the protein extracted by EH was rich in free amino acids and could be used to prepare foliar fertilizer.
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Affiliation(s)
- Yixin Yan
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yajing Zhang
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Jianlei Gao
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - Lei Qin
- Central Plains Environmental Protection Co., Ltd., Zhengzhou 450001, China
| | - Fan Liu
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Wei Zeng
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Junfeng Wan
- School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
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20
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Liu H, Zong X, Wang Y, Yin X, Liu M, Liu S, Zhu G, Fang S. One-Pot Biosynthesis of l-Aspartate from Maleic Anhydride via a Thermostable Dual-Enzyme System under High Temperature. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:14247-14254. [PMID: 36302508 DOI: 10.1021/acs.jafc.2c05662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
l-Aspartate is an important chemical in the food and pharmaceutical industries. Herein, a dual-enzyme system was constructed to synthesize l-aspartate from maleic anhydride at 50 °C, which can reduce the byproduct production. Maleate transformed from maleic anhydride in the solution was converted into l-aspartate via fumarate catalyzed by maleate isomerase (MaiA) and thermostable aspartase (AspB), respectively. Because MaiA is a rate-limiting enzyme, enzyme activities of various MaiAs were compared, and the efficient and thermostable maleate isomerase AaMaiA from Alicyclobacillus acidoterrestris was chosen. The Kcat/Km value of AaMaiA was 264.4 mM-1 min-1. AaMaiA and AspB were coexpressed in E. coli to produce l-aspartate. To improve the l-aspartate production rate, the ribosome binding site (RBS) sequence located upstream of AaMaiA was optimized and the Tat signal peptide was fused with AaMaiA. The conversion rate was 96% within 60 min, and the intermediate was not detected, the possible reason of which is that high temperature inhibits the activity of bacterial endogenous enzymes, but functional enzymes remain active. Cells from fermentation produced 243.6 g/L (1.83 M) of l-aspartate with a 2 M substrate. Our study revealed an effective method to produce l-aspartate without using gene knockout and provided a strategy for l-aspartate production in the industrial field.
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Affiliation(s)
- Hongming Liu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Xuan Zong
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Yuanxiu Wang
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Xiaye Yin
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Mengna Liu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Shiyan Liu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Guoping Zhu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, PR China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, Anhui 241000, PR China
| | - Shangping Fang
- School of Anesthesiology, Wannan Medical College, Wuhu, Anhui 241002, PR China
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21
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Zhang G, Mou Z, Wang H, Liu H. Comprehensive proteomic analysis of the main liver
and attached liver of <i>Glyptosternum maculatum</i> on the basis
of data-independent mass spectrometry acquisition. JOURNAL OF ANIMAL AND FEED SCIENCES 2022. [DOI: 10.22358/jafs/154070/2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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22
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Chen P, Chen Y, Yan ZQ, Ding SY, Liu HP, Tu JQ, Zhang XW. Protective Effect of the Polysaccharides from Taraxacum mongolicum Leaf by Modulating the p53 Signaling Pathway in H22 Tumor-Bearing Mice. Foods 2022; 11:3340. [PMID: 36359953 PMCID: PMC9656931 DOI: 10.3390/foods11213340] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 09/14/2023] Open
Abstract
Dandelion is an edible plant with a variety of bioactive components. This paper mainly reports the antitumor activity of dandelion polysaccharide DLP120 on H22 tumor-bearing mice. DLP120 is an acidic polysaccharide composed of pectin and arabinogalactan. The results indicate that DLP120 markedly inhibited tumor growth in a dose-dependent manner and attenuated and regulated negative effects on organs. In addition, DLP120 not only increased the viability of spleen lymphocytes and natural killer (NK) cells, but also increased the proportion of lymphocyte subsets in peripheral blood. Furthermore, Hematoxylin-Eosin (HE) staining showed that tumor tissues and cells exhibited typical pathology features. Annexin V FITC/PI staining and cell cycle distribution results further confirmed apoptosis and cell cycle arrest in S and G2 phases. Notably, there was a significant accumulation of reactive oxygen species. Western blotting results demonstrated that the expression of p53 was up-regulated in the DLP120 group. Moreover, the pro-apoptotic protein Bax was up-regulated while the inhibitory-apoptotic protein Bcl-2 was down-regulated. In addition, the expression of Fas and FasL, associated with the death receptor pathway, were also up-regulated. Overall, administration of DLP120 in H22 tumor-bearing mice can not only enhance immunity but also directly induce tumor cell apoptosis.
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Affiliation(s)
| | | | | | | | - Hui-Ping Liu
- State Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, College of Food Engineering and Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
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Ng CH, Tang PL, Ong YY. Enzymatic hydrolysis improves digestibility of edible bird’s nest (EBN): combined effect of pretreatment and enzyme. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01648-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Assessing the Immunomodulatory Effect of Size on the Uptake and Immunogenicity of Influenza- and Hepatitis B Subunit Vaccines In Vitro. Pharmaceuticals (Basel) 2022; 15:ph15070887. [PMID: 35890185 PMCID: PMC9321264 DOI: 10.3390/ph15070887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/14/2022] [Accepted: 07/14/2022] [Indexed: 11/24/2022] Open
Abstract
Viral subunit vaccines are a safer and more tolerable alternative to whole inactivated virus vaccines. However, they often come with limited efficacy, necessitating the use of adjuvants. Using free and particle-bound viral antigens, we assessed whether size affects the uptake of those antigens by human monocyte-derived dendritic cells (Mo-DCs) and whether differences in uptake affect their capacity to stimulate cytokine production by T cells. To this end, influenza antigens and hepatitis B surface antigen (HBsAg) were covalently conjugated to polystyrene particles of 500 nm and 3 μm. Cellular uptake of the antigens, either unconjugated or conjugated, and their capacity to stimulate T cells within a population of human peripheral blood mononuclear cells (PBMCs) were measured by flow cytometry. Conjugation of both antigens to particles significantly increased their uptake by Mo-DCs. Moreover, both the 500 nm and 3 μm influenza conjugates induced significantly higher numbers of cytokine-producing CD4+ T cells and induced increased production of the pro-inflammatory cytokines IFNγ and TNFα. In contrast, conjugation of HBsAg to particles did not notably affect the T cell response. In conclusion, conjugation of antigen to 500 nm and 3 μm particles leads to increased antigen uptake by human Mo-DCs, although the capacity of such conjugates to induce T cell stimulation likely depends on the immunological status of the PBMC donor.
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Ghaznavi H, Hajinezhad MR, Shirvaliloo M, Shahraki S, Shahraki K, Saravani R, Shirvalilou S, Shahraki O, Nazarlou Z, Sheervalilou R, Sargazi S. Effects of folate-conjugated Fe 2O 3@Au core-shell nanoparticles on oxidative stress markers, DNA damage, and histopathological characteristics: evidence from in vitro and in vivo studies. Med Oncol 2022; 39:122. [PMID: 35716197 DOI: 10.1007/s12032-022-01713-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/16/2022] [Indexed: 11/30/2022]
Abstract
The aim of this work was to assess the cytotoxicity, genotoxicity, and histopathological effects of Fe2O3@Au-FA NPs using in vitro and in vivo models. Cytotoxicity and cellular uptake of nanoparticles (NPs) by HUVECs were examined via 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay and inductively coupled plasma-mass-spectrometry (ICP-MS). This safe dose was then used for cytotoxicity assays, including total protein, total antioxidant capacity, lipid peroxidation, cell membrane integrity, reactive oxygen species, enzyme activity, and DNA damage. In the animal model, 32 Wistar rats were randomly categorized into 4 groups and received intraperitoneal injections of NPs. Blood samples for biochemical properties and histopathological changes were investigated. MTT results indicated 20 μg/ml as the safe dose for NPs. According to ICP-MS, treated cells showed significantly higher levels of the intracellular content of Fe (p < 0.001) and Au (p < 0.01) compared with the control group. In vitro tests did not show any significant cytotoxicity or genotoxicity at the safe dose of NPs. We found no significant elevation in intracellular γ-H2AX levels after treatment of HUVEC cells with Fe2O3@Au core-shell NPs (P > 0.05). As for the in vivo analysis, we observed no marked difference in serum biochemical parameters of rats treated with 50 mg/kg and 100 mg/kg doses of our NPs. Histopathological assessments indicated that liver, kidney, and testis tissues were not significantly affected at 50 mg/kg (liver), 50 mg/kg, and 100 mg/kg (kidney and testis) on NPs administration. These findings imply that the nanotoxicity of Fe2O3@Au-FA NPs in HUVECs and animals depends largely on the administrated dose. Our study suggests that Fe2O3@Au-FA NPs at a safe dose could be considered as new candidates in nanobiomedicine.
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Affiliation(s)
- Habib Ghaznavi
- Pharmacology Research Center, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran
| | - Mohammad Reza Hajinezhad
- Basic Veterinary Science Department, Veterinary medicine Faculty, University of Zabol, Postal Code: 9861335856, Zabol, Iran
| | - Milad Shirvaliloo
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Postal Code: 5166614766, Tabriz, Iran
| | - Sheida Shahraki
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran
| | - Kourosh Shahraki
- Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran
| | - Ramin Saravani
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran
| | - Sakine Shirvalilou
- Finetech in Medicine Research Center, Iran University of Medical Sciences, Postal Code: 1449614535, Tehran, Iran
| | - Omolbanin Shahraki
- Pharmacology Research Center, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran
| | - Ziba Nazarlou
- Material Engineering Department, College of Science Koç University, Istanbul, 34450, 1449614535, Turkey
| | - Roghayeh Sheervalilou
- Pharmacology Research Center, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran. .,Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran.
| | - Saman Sargazi
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Postal Code: 9816743463, Zahedan, Iran.
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26
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Liang M, Lu M, Aleem MT, Zhang Y, Wang M, Wen Z, Song X, Xu L, Li X, Yan R. Identification of excretory and secretory proteins from Haemonchus contortus inducing a Th9 immune response in goats. Vet Res 2022; 53:36. [PMID: 35597967 PMCID: PMC9123704 DOI: 10.1186/s13567-022-01055-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 04/03/2022] [Indexed: 11/21/2022] Open
Abstract
Th9 cells have been shown to play crucial roles in anti-parasite immunity, pathogenic microbe infection, and allergy. Previous studies have demonstrated that Haemonchus contortus excretory and secretory proteins (HcESPs) induce the proliferation of Th9 cells and alter the transcriptional level of IL-9 as well as its related pathways in the Th9 immune response after infection. However, the exact molecule(s) in HcESPs inducing the Th9 immune response is not yet known. In this study, flow cytometry, co-immunoprecipitation (Co-IP) and shotgun liquid chromatography tandem-mass spectrometry (LC–MS/MS) were used, and a total of 218 proteins from HcESPs that might interact with goat Th9 cells were identified. By in vitro culture of Th9 cells with HcESPs, 40 binding proteins were identified. In vivo, 38, 47, 42 and 142 binding proteins were identified at 7, 15, 35 and 50 days post-infection (dpi), respectively. Furthermore, 2 of the 218 HcESPs, named DNA/RNA helicase domain containing protein (HcDR) and GATA transcription factor (HcGATA), were confirmed to induce the proliferation of Th9 cells and promote the expression of IL-9 when incubated with goat peripheral blood mononuclear cells (PBMCs). This study represents a proteomics-guided investigation of the interactions between Th9 cells and HcESPs. It provides a new way to explore immunostimulatory antigens among HcESPs and identifies candidates for immune-mediated prevention of H. contortus infection.
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Affiliation(s)
- Meng Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Mingmin Lu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Muhammad Tahir Aleem
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yang Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Mingyue Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Zhaohai Wen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Lixin Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xiangrui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Ruofeng Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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Danielsen M, Hempel C, Andresen TL, Urquhart AJ. Biopharmaceutical nanoclusters: Towards the self-delivery of protein and peptide therapeutics. J Control Release 2022; 347:282-307. [PMID: 35513210 DOI: 10.1016/j.jconrel.2022.04.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/27/2022]
Abstract
Protein and peptide biopharmaceuticals have had a major impact on the treatment of a number of diseases. There is a growing interest in overcoming some of the challenges associated with biopharmaceuticals, such as rapid degradation in physiological fluid, using nanocarrier delivery systems. Biopharmaceutical nanoclusters (BNCs) where the therapeutic protein or peptide is clustered together to form the main constituent of the nanocarrier system have the potential to mimic the benefits of more established nanocarriers (e.g., liposomal and polymeric systems) whilst eliminating the issue of low drug loading and potential side effects from additives. These benefits would include enhanced stability, improved absorption, and increased biopharmaceutical activity. However, the successful development of BNCs is challenged by the physicochemical complexity of the protein and peptide constituents as well as the dynamics of clustering. Here, we present and discuss common methodologies for the synthesis of therapeutic protein and peptide nanoclusters, as well as review the current status of this emerging field.
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Affiliation(s)
- Mia Danielsen
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Casper Hempel
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Thomas L Andresen
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Andrew J Urquhart
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
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28
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Tian S, Yu B, Du K, Li Y. Purification of wheat germ albumin hydrolysates by membrane separation and gel chromatography and evaluating their antioxidant activities. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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29
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Zhu X, Yang M, Song Z, Yao G, Shi Q. Artemether inhibits proliferation, invasion and migration of hepatocellular carcinoma cells via targeting of CYP2J2. Oncol Lett 2022; 23:180. [PMID: 35464300 PMCID: PMC9021866 DOI: 10.3892/ol.2022.13300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 01/25/2022] [Indexed: 12/24/2022] Open
Affiliation(s)
- Xionglin Zhu
- Department of Infectious Disease, People's Hospital of Xinzhou District, Wuhan, Hubei 431400, P.R. China
| | - Mei Yang
- Department of Obstetrics and Gynecology, Xinzhou District Maternity and Child Health Hospital, Wuhan, Hubei 431400, P.R. China
| | - Zhiling Song
- Department of Infectious Disease, People's Hospital of Xinzhou District, Wuhan, Hubei 431400, P.R. China
| | - Guangbing Yao
- Department of Infectious Disease, People's Hospital of Xinzhou District, Wuhan, Hubei 431400, P.R. China
| | - Qifeng Shi
- Department of Thoracic Surgery, Xinzhou District People's Hospital, Wuhan, Hubei 431400, P.R. China
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30
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Sharafeldin M, Davis JJ. Characterising the biosensing interface. Anal Chim Acta 2022; 1216:339759. [DOI: 10.1016/j.aca.2022.339759] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/08/2022] [Accepted: 03/22/2022] [Indexed: 12/19/2022]
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Khramtsov P, Bochkova M, Timganova V, Kiselkov D, Zamorina S, Rayev M. Albumin Nanoparticles Loaded with Hemin as Peroxidase Mimics for Immunoassay**. ChemistrySelect 2022. [DOI: 10.1002/slct.202103892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pavel Khramtsov
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Maria Bochkova
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Valeria Timganova
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
| | - Dmitriy Kiselkov
- Lab of Structural Chemical Modification of Polymers Institute of Technical Chemistry UB RAS 614013 3 Academician Korolev str. Perm Russia
| | - Svetlana Zamorina
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
| | - Mikhail Rayev
- Lab of Ecological immunology Institute of Ecology and Genetics of Microorganisms UB RAS 614081 13 Golev str. Perm Russia
- Department of Biology Perm State University 614068 15 Bukirev str. Perm Russia
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32
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Hu Y, Li M, Liu Z, Song X, Qu Y, Qin Y. Carbon catabolite repression involves physical interaction of the transcription factor CRE1/CreA and the Tup1-Cyc8 complex in Penicillium oxalicum and Trichoderma reesei. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:244. [PMID: 34952627 PMCID: PMC8710005 DOI: 10.1186/s13068-021-02092-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 12/04/2021] [Indexed: 05/12/2023]
Abstract
BACKGROUND Cellulolytic enzyme production in filamentous fungi requires a release from carbon catabolite repression (CCR). The protein CRE1/CreA (CRE = catabolite responsive element) is a key transcription factor (TF) that is involved in CCR and represses cellulolytic gene expression. CRE1/CreA represents the functional equivalent of Mig1p, an important Saccharomyces cerevisiae TF in CCR that exerts its repressive effect by recruiting a corepressor complex Tup1p-Cyc8p. Although it is known from S. cerevisiae that CRE1/CreA might repress gene expression via interacting with the corepressor complex Tup1-Cyc8, this mechanism is unconfirmed in other filamentous fungi, since the physical interaction has not yet been verified in these organisms. The precise mechanism on how CRE1/CreA achieves transcriptional repression after DNA binding remains unknown. RESULTS The results from tandem affinity purification and bimolecular fluorescence complementation revealed a direct physical interaction between the TF CRE1/CreA and the complex Tup1-Cyc8 in the nucleus of cellulolytic fungus Trichoderma reesei and Penicillium oxalicum. Both fungi have the ability to secrete a complex arsenal of enzymes to synergistically degrade lignocellulosic materials. In P. oxalicum, the protein PoCyc8, a subunit of complex Tup1-Cyc8, interacts directly with TF PoCreA and histone H3 lysine 36 (H3K36) methyltransferase PoSet2 in the nucleus. The di-methylation level of H3K36 in the promoter of prominent cellulolytic genes (cellobiohydrolase-encoding gene Pocbh1/cel7A and endoglucanase-encoding gene Poegl1/cel7B) is positively correlated with the expression levels of TF PoCreA. Since the methylation of H3K36 was also demonstrated to be a repression marker of cellulolytic gene expression, it appears feasible that the cellulolytic genes are repressed via PoCreA-Tup1-Cyc8-Set2-mediated transcriptional repression. CONCLUSION This study verifies the long-standing conjecture that the TF CRE1/CreA represses gene expression by interacting with the corepressor complex Tup1-Cyc8 in filamentous fungi. A reasonable explanation is proposed that PoCreA represses gene expression by recruiting complex PoTup1-Cyc8. Histone methyltransferase Set2, which methylates H3K36, is also involved in the regulatory network by interacting with PoCyc8. The findings contribute to the understanding of CCR mechanism in filamentous fungi and could aid in biotechnologically relevant enzyme production.
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Affiliation(s)
- Yueyan Hu
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-Based Medicine, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
| | - Mengxue Li
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
| | - Zhongjiao Liu
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
| | - Xin Song
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
| | - Yinbo Qu
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
| | - Yuqi Qin
- National Glycoengineering Research Center, State Key Laboratory of Microbial Technology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
- NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-Based Medicine, Shandong University, No. 72 Binhai Road, Qingdao, 266237 China
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Błaszczyk MM, Przybysz Ł. Determination of nanoparticles concentration in solution based on Pickering emulsion destabilization analyses. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-02213-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractThe
dynamic development of nanotechnology research has contributed to the fact that various types of nanoparticles are increasingly used on a large scale both for medical and biological purposes, but above all in many industrial fields. Such a wide application of nanoparticles is often connected with the need to estimate their characteristic parameters, such as size, size distribution or concentration. Existing instruments are usually quite expensive and not always available. Therefore, other cheaper and simpler methods based on analytical techniques are sought. In this paper, we have proposed a method to estimate the concentration of nanoparticles in solutions based on destabilization analyses of Pickering emulsions produced with their use. The fact of mutual relationship between emulsion concentration, nanoparticle concentration and emulsion stability was used here. The study was carried out using silica nanoparticles. It was presented how to apply the method and what are its limitations. Moreover, an example of its application for the determination of nanoparticle concentration in an unknown sample, obtained after analysis of the permeability of membranes in diffusion chambers, has been presented. The method can become a useful alternative for the determination of nanoparticle concentration in solution in places where no specialized equipment is available.
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Jin LQ, Jin YT, Zhang JW, Liu ZQ, Zheng YG. Enhanced catalytic efficiency and thermostability of glucose isomerase from Thermoanaerobacter ethanolicus via site-directed mutagenesis. Enzyme Microb Technol 2021; 152:109931. [PMID: 34688091 DOI: 10.1016/j.enzmictec.2021.109931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/26/2021] [Accepted: 10/02/2021] [Indexed: 10/20/2022]
Abstract
Glucose isomerase (GI) is a key enzyme in the preparation of high fructose corn syrup (HFCS). In this study, a mutant TEGI-M-L38 M/V137 L (TEGI-M2) of glucose isomerase (TEGI-M) originated from Thermoanaerobacter ethanalicus CCSD1 was obtained by site-directed mutagenesis. The TEGI-M2 showed an optimal activity at 85 ℃ and pH 6.5 with the divalent cations Co2+ and Mg2+. The structural differences between TEGI-M and TEGI-M2 were investigated based on the homology modeling and molecular docking, to elucidate the mechanism of improvement in the enzymatic properties. Compared with the original enzyme, the TEGI-M2 showed a 2.0-fold increased enzyme activity and a decreased Km from 234.2 mM to 85.9 mM. Finally, the application of mutant TEGI-M2 in HFCS one-step biosynthesis was attempted, resulting in a d-fructose yield of 67.3 %, which was 14.3 % higher than that of TEGI-M. This improved catalytic performance of TEGI-M2 was of great importance for the industrial preparation of d-fructose in one-step process.
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Affiliation(s)
- Li-Qun Jin
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Yi-Ting Jin
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Jing-Wei Zhang
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Zhi-Qiang Liu
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China.
| | - Yu-Guo Zheng
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China
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The reduction effect and mechanism of Deinococcus radiodurans transformed dsrA gene to uranyl ions. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08038-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Tang PL, Goh HS, Sia SS. Combined enzymatic hydrolysis and herbal extracts fortification to boost in vitro antioxidant activity of edible bird’s nest solution. CHINESE HERBAL MEDICINES 2021; 13:549-555. [PMID: 36119365 PMCID: PMC9476631 DOI: 10.1016/j.chmed.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/18/2021] [Accepted: 09/15/2021] [Indexed: 11/27/2022] Open
Abstract
Objective Edible bird’s nest (EBN) is a popular traditional tonic food in Chinese population for centuries. Malaysia is one of the main EBN suppliers in the world. This study aims to explore the best strategy to boost the antioxidant potential of EBN solution. Methods In this study, the raw EBN (4%, mass to volume ratio) was initially enzymatic hydrolyzed using papain enzyme to produce EBN hydrolysate (EBNH), then spray-dried into powdered form. Next, 4% (mass to volume ratio) of EBNH powder was dissolved in ginger extract (GE), mulberry leaf extract (MLE) and cinnamon twig extract (CTE) to detect the changes of antioxidant activities, respectively. Results Results obtained suggest that enzymatic hydrolysis significantly reduced the viscosity of 4% EBN solution from (68.12 ± 0.69) mPa·s to (7.84 ± 0.31) mPa·s. Besides, the total phenolic content (TPC), total flavonoid content (TFC), total soluble protein, DPPH scavenging activity and ferric reducing antioxidant power (FRAP) were substantially increased following EBN hydrolysis using papain enzyme. In addition, fortification with GE, MLE and CTE had further improved the TPC, TFC, DPPH scavenging activity and FRAP of the EBNH solution. Among the samples, MLE-EBNH solution showed the most superior antioxidant potential at (86.39 ± 1.66)% of DPPH scavenging activity and (19.79 ± 2.96) mmol/L FeSO4 of FRAP. Conclusion This study proved that combined enzymatic hydrolysis and MLE fortification is the best strategy to produce EBN product with prominent in vitro antioxidant potential. This preliminary study provides new insight into the compatibility of EBN with different herbal extracts for future health food production.
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Khramtsov P, Burdina O, Lazarev S, Novokshonova A, Bochkova M, Timganova V, Kiselkov D, Minin A, Zamorina S, Rayev M. Modified Desolvation Method Enables Simple One-Step Synthesis of Gelatin Nanoparticles from Different Gelatin Types with Any Bloom Values. Pharmaceutics 2021; 13:1537. [PMID: 34683829 PMCID: PMC8541285 DOI: 10.3390/pharmaceutics13101537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/16/2021] [Accepted: 09/18/2021] [Indexed: 11/17/2022] Open
Abstract
Gelatin nanoparticles found numerous applications in drug delivery, bioimaging, immunotherapy, and vaccine development as well as in biotechnology and food science. Synthesis of gelatin nanoparticles is usually made by a two-step desolvation method, which, despite providing stable and homogeneous nanoparticles, has many limitations, namely complex procedure, low yields, and poor reproducibility of the first desolvation step. Herein, we present a modified one-step desolvation method, which enables the quick, simple, and reproducible synthesis of gelatin nanoparticles. Using the proposed method one can prepare gelatin nanoparticles from any type of gelatin with any bloom number, even with the lowest ones, which remains unattainable for the traditional two-step technique. The method relies on quick one-time addition of poor solvent (preferably isopropyl alcohol) to gelatin solution in the absence of stirring. We applied the modified desolvation method to synthesize nanoparticles from porcine, bovine, and fish gelatin with bloom values from 62 to 225 on the hundreds-of-milligram scale. Synthesized nanoparticles had average diameters between 130 and 190 nm and narrow size distribution. Yields of synthesis were 62-82% and can be further increased. Gelatin nanoparticles have good colloidal stability and withstand autoclaving. Moreover, they were non-toxic to human immune cells.
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Affiliation(s)
- Pavel Khramtsov
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Lab of Ecological Immunology, Institute of Ecology and Genetics of Microorganisms, 614081 Perm, Russia; (M.B.); (V.T.); (S.Z.); (M.R.)
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
- Center for Immunology and Cellular Biotechnology, Immanuel Kant Baltic Federal University, 236016 Kaliningrad, Russia
| | - Oksana Burdina
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
| | - Sergey Lazarev
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
| | - Anastasia Novokshonova
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
| | - Maria Bochkova
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Lab of Ecological Immunology, Institute of Ecology and Genetics of Microorganisms, 614081 Perm, Russia; (M.B.); (V.T.); (S.Z.); (M.R.)
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
| | - Valeria Timganova
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Lab of Ecological Immunology, Institute of Ecology and Genetics of Microorganisms, 614081 Perm, Russia; (M.B.); (V.T.); (S.Z.); (M.R.)
| | - Dmitriy Kiselkov
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Institute of Technical Chemistry, 614013 Perm, Russia;
| | - Artem Minin
- Lab of Applied Magnetism, M.N. Mikheev Institute of Metal Physics of the UB RAS, 620108 Yekaterinburg, Russia;
- Faculty of Biology and Fundamental Medicine, Ural Federal University Named after The First President of Russia B.N. Yeltsin, 620002 Yekaterinburg, Russia
| | - Svetlana Zamorina
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Lab of Ecological Immunology, Institute of Ecology and Genetics of Microorganisms, 614081 Perm, Russia; (M.B.); (V.T.); (S.Z.); (M.R.)
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
| | - Mikhail Rayev
- Perm Federal Research Center of the Ural Branch of The Russian Academy of Sciences, Lab of Ecological Immunology, Institute of Ecology and Genetics of Microorganisms, 614081 Perm, Russia; (M.B.); (V.T.); (S.Z.); (M.R.)
- Department of Biology, Perm State University, 614068 Perm, Russia; (O.B.); (S.L.); (A.N.)
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Construction of antifouling fluorinated polymer brush via activators regenerated by electron transfer ATRP and thiol-epoxy click reaction. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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