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Yip YS, Jaafar NR, Rahman RA, Puspaningsih NNT, Jailani N, Illias RM. Improvement of combined cross-linked enzyme aggregates of cyclodextrin glucanotransferase and maltogenic amylase by functionalization of cross-linker for maltooligosaccharides synthesis. Int J Biol Macromol 2024; 273:133241. [PMID: 38897508 DOI: 10.1016/j.ijbiomac.2024.133241] [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: 03/21/2024] [Revised: 06/02/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
Combined cross-linked enzyme aggregates of cyclodextrin glucanotransferase (CGTase) and maltogenic amylase (Mag1) from Bacillus lehensis G1 (Combi-CLEAs-CM) were successfully developed to synthesis maltooligosaccharides (MOS). Yet, the poor cross-linking performance between chitosan (cross-linker) and enzymes resulting low activity recovery and catalytic efficiency. In this study, we proposed the functionalization of cross-linkers with the integration of computational analysis to study the influences of different functional group on cross-linkers in combi-CLEAs development. From in-silico analysis, O-carboxymethyl chitosan (OCMCS) with the highest binding affinity toward both enzymes was chosen and showed alignment with the experimental result, in which OCMCS was synthesized as cross-linker to develop improved activity recovery of Combi-CLEAs-CM-ocmcs (74 %). The thermal stability and deactivation energy (205.86 kJ/mol) of Combi-CLEAs-CM-ocmcs were found to be higher than Combi-CLEAs-CM (192.59 kJ/mol). The introduction of longer side chain of carboxymethyl group led to a more flexible structure of Combi-CLEAs-CM-ocmcs. This alteration significantly reduced the Km value of Combi-CLEAs-CM-ocmcs by about 3.64-fold and resulted in a greater Kcat/Km (3.63-fold higher) as compared to Combi-CLEAs-CM. Moreover, Combi-CLEAs-CM-ocmcs improved the reusability with retained >50 % of activity while Combi-CLEAs-CM only 36.18 % after five cycles. Finally, maximum MOS production (777.46 mg/g) was obtained by Combi-CLEAs-CM-ocmcs after optimization using response surface methodology.
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Affiliation(s)
- Yee Seng Yip
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Nardiah Rizwana Jaafar
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Roshanida A Rahman
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Ni Nyoman Tri Puspaningsih
- Laboratory of Proteomics, University-CoE Research Center for Bio-Molecule Engineering, Universitas Airlangga, Kampus C-UNAIR, Surabaya, East Java, Indonesia
| | - Nashriq Jailani
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Rosli Md Illias
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
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2
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Zangi AR, Amiri A, Borzouee F, Bagherifar R, Pazooki P, Hamishehkar H, Javadzadeh Y. Immobilized nanoparticles-mediated enzyme therapy; promising way into clinical development. DISCOVER NANO 2023; 18:55. [PMID: 37382752 PMCID: PMC10409955 DOI: 10.1186/s11671-023-03823-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/06/2023] [Indexed: 06/30/2023]
Abstract
Enzyme (Enz)-mediated therapy indicated a remarkable effect in the treatment of many human cancers and diseases with an insight into clinical phases. Because of insufficient immobilization (Imb) approach and ineffective carrier, Enz therapeutic exhibits low biological efficacy and bio-physicochemical stability. Although efforts have been made to remove the limitations mentioned in clinical trials, efficient Imb-destabilization and modification of nanoparticles (NPs) remain challenging. NP internalization through insufficient membrane permeability, precise endosomal escape, and endonuclease protection following release are the primary development approaches. In recent years, innovative manipulation of the material for Enz immobilization (EI) fabrication and NP preparation has enabled nanomaterial platforms to improve Enz therapeutic outcomes and provide low-diverse clinical applications. In this review article, we examine recent advances in EI approaches and emerging views and explore the impact of Enz-mediated NPs on clinical therapeutic outcomes with at least diverse effects.
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Affiliation(s)
- Ali Rajabi Zangi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ala Amiri
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Fatemeh Borzouee
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rafieh Bagherifar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pouya Pazooki
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran
| | - Yousef Javadzadeh
- Biotechnology Research Center, and Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran.
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3
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Hamid A, Zafar A, Liaqat I, Afzal MS, Peng L, Rauf MK, ul Haq I, ur-Rehman A, Ali S, Aftab MN. Effective utilization of magnetic nano-coupled cloned β-xylanase in saccharification process. RSC Adv 2022; 12:6463-6475. [PMID: 35424589 PMCID: PMC8982049 DOI: 10.1039/d1ra09275h] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/16/2022] [Indexed: 11/21/2022] Open
Abstract
The β-xylanase gene (DCE06_04615) with 1041 bp cloned from Thermotoga naphthophila was expressed into E. coli BL21 DE3. The cloned β-xylanase was covalently bound to iron oxide magnetic nanoparticles coated with silica utilizing carbodiimide. The size of the immobilized MNPs (50 nm) and their binding with β-xylanase were characterized by Fourier-transform electron microscopy (FTIR) (a change in shift particularly from C–O to C–N) and transmission electron microscopy (TEM) (spherical in shape and 50 nm in diameter). The results showed that enzyme activity (4.5 ± 0.23 U per mL), thermo-stability (90 °C after 4 hours, residual activity of enzyme calculated as 29.89% ± 0.72), pH stability (91% ± 1.91 at pH 7), metal ion stability (57% ± 1.08 increase with Ca2+), reusability (13 times) and storage stability (96 days storage at 4 °C) of the immobilized β-xylanase was effective and superior. The immobilized β-xylanase exhibited maximal enzyme activity at pH 7 and 90 °C. Repeated enzyme assay and saccharification of pretreated rice straw showed that the MNP-enzyme complex exhibited 56% ± 0.76 and 11% ± 0.56 residual activity after 8 times and 13 times repeated usage. The MNP-enzyme complex showed 17.32% and 15.52% saccharification percentage after 1st and 8th time usage respectively. Immobilized β-xylanase exhibited 96% residual activity on 96 days' storage at 4 °C that showed excellent stability. The β-xylanase gene (DCE06_04615) with 1041 bp cloned from Thermotoga naphthophila was expressed into E. coli BL21 DE3.![]()
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Affiliation(s)
- Attia Hamid
- Institute of Industrial Biotechnology, Government College University Lahore, Pakistan
| | - Asma Zafar
- Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - Iram Liaqat
- Department of Zoology, Government College University Lahore, Pakistan
| | - Muhammad Sohail Afzal
- Department of Life Sciences, School of Science, University of Management and Technology (UMT), Lahore, Pakistan
| | - Liangcai Peng
- Biomass and Bioenergy Research Center, Huazhong Agriculture University, Wuhan, China
| | | | - Ikram ul Haq
- Institute of Industrial Biotechnology, Government College University Lahore, Pakistan
| | - Asad ur-Rehman
- Institute of Industrial Biotechnology, Government College University Lahore, Pakistan
| | - Sikander Ali
- Institute of Industrial Biotechnology, Government College University Lahore, Pakistan
| | - Muhammad Nauman Aftab
- Institute of Industrial Biotechnology, Government College University Lahore, Pakistan
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4
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Ibrahim ASS, Elbadawi YB, El-Toni AM, Almaary KS, El-Tayeb MA, Elagib AA, Maany DAF. Stabilization and improved properties of Salipaludibacillus agaradhaerens alkaline protease by immobilization onto double mesoporous core-shell nanospheres. Int J Biol Macromol 2020; 166:557-566. [PMID: 33186653 DOI: 10.1016/j.ijbiomac.2020.10.213] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/01/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023]
Abstract
In this study, serine alkaline protease from halotolerant alkaliphilic Salipaludibacillus agaradhaerens strain AK-R was purified and immobilized onto double mesoporous core-shell silica (DMCSS) nanospheres. Covalent immobilization of AK-R protease onto activated DMCSS-NH2 nanospheres was more efficient than physical adsorption and was applied in further studies. DMCSS-NH2 nanospheres showed high loading capacity of 103.8 μg protein/mg nanospheres. Relative to free AK-R protease, the immobilized enzyme exhibited shifts in the optimal temperature and pH from 60 to 65 °C and pH 10.0 to 10.5, respectively. While the soluble enzyme retained 47.2% and 9.1% of its activity after treatment for 1 h at 50 and 60 °C, the immobilized protease maintained 87.7% and 48.3%, respectively. After treatment for 2 h at pH 5 and 13, the immobilized protease maintained 73.6% and 53.4% of its activity, whereas the soluble enzyme retained 32.9% and 1.4%, respectively. Furthermore, the immobilized AK-R protease showed significant improvement of enzyme stability in high concentration of NaCl, organic solvents, surfactants, and commercial detergents. In addition, the immobilized protease exhibited a very good operational stability, retaining 79.8% of its activity after ten cycles. The results clearly suggest that the developed immobilized protease system is a promising nanobiocatalyst for various protease applications.
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Affiliation(s)
- Abdelnasser S S Ibrahim
- Department of Chemistry of Natural and Microbial Products, Pharmaceutical and Drug Industries Research Division, National Research Centre, El-Buhouth St., Dokki, Cairo 12311, Egypt; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Yahya B Elbadawi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed M El-Toni
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia; Central Metallurgical Research and Development Institute, Helwan 11421, Cairo, Egypt
| | - Khalid S Almaary
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed A El-Tayeb
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Dina Abdel Fattah Maany
- Department of Chemistry of Natural and Microbial Products, Pharmaceutical and Drug Industries Research Division, National Research Centre, El-Buhouth St., Dokki, Cairo 12311, Egypt.
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Esmaili M, Dezhampanah H, Hadavi M. Surface modification of super paramagnetic iron oxide nanoparticles via milk casein for potential use in biomedical areas. J Biomol Struct Dyn 2020; 39:977-987. [DOI: 10.1080/07391102.2020.1722751] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Masoomeh Esmaili
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran
| | - Hamid Dezhampanah
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran
| | - Mahvash Hadavi
- Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran
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6
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Doraiswamy N, Sarathi M, Pennathur G. Improvement in biochemical characteristics of cross-linked enzyme aggregates (CLEAs) with magnetic nanoparticles as support matrix. Methods Enzymol 2020; 630:133-158. [PMID: 31931983 DOI: 10.1016/bs.mie.2019.10.019] [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] [Indexed: 04/05/2023]
Abstract
Recent developments in novel carriers for enzyme immobilization have led to improvement in the stability and cost-effectiveness of the biocatalysts for their enhanced suitability in the industrial applications. Cross-linked enzyme aggregates (CLEAs), a recent technique developed in the carrier-free type of enzyme immobilization is a simple and straightforward method. Moreover, the magnetic property and the higher surface-to-volume ratio of the maghemite nanoparticles have also been utilized in the present immobilization technique as magnetic nanoparticle-supported CLEAs (Mgnp-CLEAs). The stability studies of the free and immobilized enzyme revealed the Mgnp-CLEAs to have enhanced enzyme stability with an increase in the reusability cycle. The physical characterization of the nanoparticles and immobilized enzymes by the Scanning Electron Microscopy (SEM), Fourier-Transform Infrared spectroscopy (FT-IR) and X-ray diffraction analysis (XRD) showed the successful immobilization of the enzyme for its improved stability.
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Affiliation(s)
| | | | - Gautam Pennathur
- Centre for Biotechnology, Anna University, Chennai, Tamil Nadu, India; AU-KBC Research Centre, Anna University, Chennai, Tamil Nadu, India.
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7
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Arafa ESA, Hassan W, Murtaza G, Buabeid MA. Ficus carica and Sizigium cumini Regulate Glucose and Lipid Parameters in High-Fat Diet and Streptozocin-Induced Rats. J Diabetes Res 2020; 2020:6745873. [PMID: 33178838 PMCID: PMC7644324 DOI: 10.1155/2020/6745873] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/22/2020] [Accepted: 10/09/2020] [Indexed: 12/28/2022] Open
Abstract
Obesity linked diabetes, popularly known as diabesity, has been viewed as a direct product of the modern lifestyle in both developed and developing countries, and its increased prevalence is seen as a major threat to public health globally. Ficus carica (FC) and Syzigium cumini (SC) are part of indigenous flora with traditional medicinal properties. Fresh seeds of SC fruit and fruit of FC were collected and macerated to obtain the final extract. Wistar rats were divided into seven groups fed either on a normal diet or high-fat diet (HFD) along with streptozocin (STZ) to induce diabesity. The crude extract of FC (FC.Cr.) and SC (SC.Cr.) were administered at 250 mg/kg/day and 500 mg/kg/day in induced diabesity state. Body weights, blood glucose level, complete blood count (CBC), cholesterol, triglycerides (TG), low-density lipoprotein (LDL), very-low-density lipoprotein (VLDL), and high-density lipoprotein (HDL) were recorded to analyze their effects on glucose and lipid metabolism. Further, superoxide dismutase (SOD) and malondialdehyde (MDA) were measured to examine their effects on lipid peroxidation and ant oxidative enzyme. Results showed that both FC.Cr. and SC.Cr. have the potential to control obesity-linked type 2 diabetes mellitus (T2DM) by lowering the body weights, serum glucose, cholesterol, TG, LDL, and VLDL, while increasing the protective effects of HDL dose-dependently. The crude extract of both plants showed significant activity to raise SOD and curb MDA under diabetic states. It was concluded that both FC.Cr. and SC.Cr. exhibited remarkable therapeutics potential in HFD-STZ-induced diabetic rats. However, we found that the effects of SC.Cr. are relatively more pronounced as compared to FC.Cr. in almost all parameters.
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Affiliation(s)
- El-Shaimaa A. Arafa
- College of Pharmacy and Health Sciences, Ajman University, Ajman 346, UAE
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Benisuef University, Beni-suef, 62514, Egypt
| | - Waseem Hassan
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Ghulam Murtaza
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Manal Ali Buabeid
- College of Pharmacy and Health Sciences, Ajman University, Ajman 346, UAE
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8
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Pudlarz AM, Ranoszek-Soliwoda K, Czechowska E, Tomaszewska E, Celichowski G, Grobelny J, Szemraj J. A Study of the Activity of Recombinant Mn-Superoxide Dismutase in the Presence of Gold and Silver Nanoparticles. Appl Biochem Biotechnol 2019; 187:1551-1568. [PMID: 30284207 PMCID: PMC6469596 DOI: 10.1007/s12010-018-2896-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/26/2018] [Indexed: 12/11/2022]
Abstract
Superoxide dismutase (SOD) is one of the best characterized enzyme maintaining the redox state in the cell. A bacterial expression system was used to produce human recombinant manganese SOD with a His-tag on the C-end of the protein for better purification. In addition, gold and silver nanoparticles were chemically synthesized in a variety of sizes, and then mixed with the enzyme for immobilization. Analysis by dynamic light scattering and scanning transmission electron microscopy revealed no aggregates or agglomerates of the obtained colloids. After immobilization of the protein on AuNPs and AgNPs, the conjugates were analyzed by SDS-PAGE. It was determined that SOD was adsorbed only on the gold nanoparticles. Enzyme activity was analyzed in colloids of the gold and silver nanoparticles bearing SOD. The presence of a nanoparticle did not affect enzyme activity; however, the amount of protein and size of the gold nanoparticle did influence the enzymatic activity of the conjugate. Our findings confirm that active recombinant human superoxide dismutase can be produced using a bacterial expression system, and that the enzyme can be immobilized on metal nanoparticles. The interaction between enzymes and metal nanoparticles requires further investigation.
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Affiliation(s)
- Agnieszka Małgorzata Pudlarz
- Department of Medical Biochemistry, Faculty of Health Sciences with the Division of Nursing and Midwifery, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland.
| | - Katarzyna Ranoszek-Soliwoda
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Ewa Czechowska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Emilia Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Grzegorz Celichowski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Jarosław Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163, 90-236, Lodz, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Faculty of Health Sciences with the Division of Nursing and Midwifery, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland
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9
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Doraiswamy N, Sarathi M, Pennathur G. Cross-linked esterase aggregates (CLEAs) using nanoparticles as immobilization matrix. Prep Biochem Biotechnol 2019; 49:270-278. [DOI: 10.1080/10826068.2018.1536993] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Liu J, Wei B, Che C, Gong Z, Jiang Y, Si M, Zhang J, Yang G. Enhanced stability of manganese superoxide dismutase by amino acid replacement designed via molecular dynamics simulation. Int J Biol Macromol 2019; 128:297-303. [PMID: 30685308 DOI: 10.1016/j.ijbiomac.2019.01.126] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 01/23/2019] [Accepted: 01/23/2019] [Indexed: 12/27/2022]
Abstract
In order to improve manganese-SOD stability, three mutations were constructed via site-directed mutagenesis, and the root mean square fluctuation (RMSF) and root mean square deviation (RMSD) were used as stability assessment indexes. The amino acids of V140, E155 and E215 from wild-type mouse Mn-SOD was replaced to L140, W155 and W215, and a recombinant plasmid containing DNA segment coding wild-type and mutant Mn-SOD protein was transformed into Escherichia coli BL21 for expression. The highest enzyme activity of the mutations-MnSOD was 2050 U/mg. In addition, the recombinant protein, TM-MnSODV140L, E155W, E215W exhibited higher working temperature and improved stability compared with the wild-type Mn-SOD. Furthermore, CD spectrum analysis of the improved mutants and wild-type enzyme showed that there was no significant change in their secondary structures. This study not only expands the scope of the application of enzymes, but also helps us understand the relationship between protein structure and function.
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Affiliation(s)
- Jinfeng Liu
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Beibei Wei
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Chengchuan Che
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Zhijin Gong
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yueshui Jiang
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Meiru Si
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Junming Zhang
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China
| | - Ge Yang
- College of Life Sciences, Qufu Normal University, Qufu 273165, Shandong, China.
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11
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Pudlarz A, Szemraj J. Nanoparticles as Carriers of Proteins, Peptides and Other Therapeutic Molecules. Open Life Sci 2018; 13:285-298. [PMID: 33817095 PMCID: PMC7874720 DOI: 10.1515/biol-2018-0035] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/08/2018] [Indexed: 12/12/2022] Open
Abstract
Nanoparticles have many applications both in industry and medicine. Depending upon their physical and chemical properties, they can be used as carriers of therapeutic molecules or as therapeutics. Nanoparticles are made of synthetic or natural polymers, lipids or metals. Their use allows for faster transport to the place of action, thus prolonging its presence in the body and limiting side effects. In addition, the use of such a drug delivery system protects the drug from rapid disintegration and elimination from the body. In recent years, the use of proteins and peptides as therapeutic molecules has grown significantly. Unfortunately, proteins are subject to enzymatic digestion and can cause unwanted immune response beyond therapeutic action. The use of drug carriers can minimize undesirable side effects and reduce the dose of medication needed to achieve the therapeutic effect. The current study presents the use of several selected drug delivery systems for the delivery of proteins, peptides and other therapeutic molecules.
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Affiliation(s)
- Agnieszka Pudlarz
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
- E-mail:
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
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12
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Li M, Guo S, Li X, Wang Q, Zhu L, Yin C, Wang W. Engineering a highly thermostable and stress tolerant superoxide dismutase by N-terminal modification and metal incorporation. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-017-0243-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Zhang LS, Fang Y, Zhou Y, Ye BC. Improvement of the Stabilization and Activity of Protocatechuate 3,4-Dioxygenase Isolated from Rhizobium sp. LMB-1 and Immobilized on Fe 3O 4 Nanoparticles. Appl Biochem Biotechnol 2017; 183:1035-1048. [PMID: 28516418 DOI: 10.1007/s12010-017-2481-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 04/13/2017] [Indexed: 11/25/2022]
Abstract
Protocatechuate 3,4-dioxygenase (P34O), which is isolated from Rhizobium sp. LMB-1, catalyzes the ring cleavage step in the metabolism of aromatic compounds, and has great potential for environmental bioremediation. However, its structure is very sensitive to different environmental factors, which weaken its activity. Immobilization of the enzyme can improve its stability, allow reusability, and reduce operation costs. In this work, the relative molecular mass of the native P34O enzyme was determined to be 500 kDa by gel filtration chromatography on Sephadex G-200, and the enzyme was immobilized onto (3-aminopropyl) triethoxysilane-modified Fe3O4 nanoparticles (NPs) by the glutaraldehyde method. The optimum pH of immobilized and free P34O was unaffected, but the optimum temperature of immobilized P34O increased from 60 to 70 °C, and the thermal stability of immobilized P34O was better than that of the free enzyme and showed higher enzymatic activity at 60 and 70 °C. In addition, with the exception of Fe3+, most metal ions and organic chemicals could not improve the activity of free and immobilized P34O. The kinetic parameters of the immobilized P34O were higher than those of the free enzyme, and immobilized P34O on Fe3O4 NPs could be reused ten times without a remarkable decrease in enzymatic activity.
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Affiliation(s)
- Li-Shuang Zhang
- Department of Food Science and Technology, School of Bioengineering, East China University of Science and Technology, Meilong RD 130, Shanghai, 200237, China
| | - Yue Fang
- Department of Food Science and Technology, School of Bioengineering, East China University of Science and Technology, Meilong RD 130, Shanghai, 200237, China
| | - Ying Zhou
- Department of Food Science and Technology, School of Bioengineering, East China University of Science and Technology, Meilong RD 130, Shanghai, 200237, China.
| | - Bang-Ce Ye
- Laboratory of Biosystems and Microanalysis, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Meilong RD 130, Shanghai, 200237, China.,School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, 832000, China
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14
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Unique Characteristics of Recombinant Hybrid Manganese Superoxide Dismutase from Staphylococcus equorum and S. saprophyticus. Protein J 2016; 35:136-44. [DOI: 10.1007/s10930-016-9650-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Li M, Zhu L, Wang W. Improving the thermostability and stress tolerance of an archaeon hyperthermophilic superoxide dismutase by fusion with a unique N-terminal domain. SPRINGERPLUS 2016; 5:241. [PMID: 27026935 PMCID: PMC4771647 DOI: 10.1186/s40064-016-1854-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 02/15/2016] [Indexed: 11/10/2022]
Abstract
The superoxide dismutase from the archaeon Sulfolobus solfataricus (SOD Ss ) is a well-studied hyperthermophilic SOD with crystal structure and possible thermostability factors characterized. Previously, we discovered an N-terminal domain (NTD) in a thermophilic SOD from Geobacillus thermodenitrificans NG80-2 which confers heat resistance on homologous mesophilic SODs. The present study therefore aimed to further improve the thermostability and stress tolerance of SOD Ss via fusion with this NTD. The recombinant protein, rSOD Ss , exhibited improved thermophilicity, higher working temperature, improved thermostability, broader pH stability, and enhanced tolerance to inhibitors and organic media than SOD Ss without any alterations in its oligomerization state. These results suggest that the NTD is an excellent candidate for improving stability of both mesophilic and thermophilic SOD from either bacteria or archaea via simple genetic manipulation. Therefore, this study provides a general, feasible and highly useful strategy for generating extremely thermostable SODs for industrial applications.
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Affiliation(s)
- Mingchang Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin, 300457 People's Republic of China
| | - Lin Zhu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin, 300457 People's Republic of China
| | - Wei Wang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin, 300457 People's Republic of China ; Tianjin Key Laboratory of Microbial Functional Genomics, TEDA, Tianjin, 300457 People's Republic of China
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16
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Development of novel robust nanobiocatalyst for detergents formulations and the other applications of alkaline protease. Bioprocess Biosyst Eng 2016; 39:793-805. [DOI: 10.1007/s00449-016-1559-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 01/29/2016] [Indexed: 12/19/2022]
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17
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Synthesis, Characterization and SOD-Like Activity of Histidine Immobilized Silica Nanoparticles. J Inorg Organomet Polym Mater 2015. [DOI: 10.1007/s10904-015-0239-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Bibi Z, Qader SAU, Aman A. Calcium alginate matrix increases the stability and recycling capability of immobilized endo-β-1,4-xylanase from Geobacillus stearothermophilus KIBGE-IB29. Extremophiles 2015; 19:819-27. [PMID: 26001519 DOI: 10.1007/s00792-015-0757-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/10/2015] [Indexed: 12/21/2022]
Abstract
Exploration of microbial pool from extremely diversified ecosystem is significantly important for various industrial applications. Bacterial communities from extreme habitats including volcanic vents, hot springs, and industrial sectors are eagerly explored for the isolation of thermophiles. Geobacillus stearothermophilus KIBGE-IB29, isolated from blast furnace site of a steel processing industry, is capable of producing thermostable endo-β-1,4-xylanase. In the current study, this enzyme was immobilized within calcium alginate beads using entrapment technique. Amalgamation of sodium alginate (40.0 gL(-1)) and calcium chloride (0.4 M) was used for the formation of immobilized beads. It was observed that temperature (50 °C) and pH (7.0) optima of immobilized enzyme remained same, but enzyme-substrate reaction time increased from 5.0 to 30.0 min as compared to free enzyme. Diffusion limit of high molecular weight xylan (corncob) caused a decline in V max of immobilized enzyme from 4773 to 203.7 U min(-1), whereas K m value increased from 0.5074 to 0.5722 mg ml(-1) with reference to free enzyme. Immobilized endo-β-1,4-xylanase showed its stability even at high temperatures as compared to free enzyme and retained 18 and 9 % residual activity at 70 and 80 °C, respectively. Immobilized enzyme also exhibited sufficient recycling efficiency up to five reaction cycles which indicated that this enzyme can be a plausible candidate in paper and pulp industry.
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Affiliation(s)
- Zainab Bibi
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi, 75270, Pakistan
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19
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Song C, Li H, Sheng L, Zhang X. Characterization of the interaction between superoxide dismutase and 2-oxoisovalerate dehydrogenase. Gene 2015; 568:1-7. [PMID: 25958347 DOI: 10.1016/j.gene.2015.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/25/2015] [Accepted: 05/04/2015] [Indexed: 10/23/2022]
Abstract
Thermophiles are attractive microorganisms to study the adaptation of life in high temperature environment. It is revealed that superoxide dismutase (SOD) is essential for thermoadaptation of thermophiles. However, the SOD-mediated pathway of thermoadaptation remains unclear. To address this issue, the proteins interacted with SOD were characterized in Thermus thermophilus in this study. Based on co-immunoprecipitation and Western blot analyses, the results showed that 2-oxoisovalerate dehydrogenase α subunit was bound to SOD. The isothermal titration calorimetry analysis showed the existence of the interaction between SOD and 2-oxoisovalerate dehydrogenase α subunit. The bacterial two-hybrid data indicated that SOD was directly interacted with 2-oxoisovalerate dehydrogenase α subunit. Gene site-directed mutagenesis analysis revealed that the intracellular interaction between SOD and 2-oxoisovalerate dehydrogenase α subunit was dependent on their whole molecules. Therefore our study presented a novel aspect of SOD in the thermoadaptation of thermophiles by interaction with dehydrogenase, a key enzyme of tricarboxylic acid cycle.
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Affiliation(s)
- Chongfu Song
- Key Laboratory of Conservation Biology for Endangered Wildlife of Ministry of Education and College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; School of Chemistry and Material Engineering, Fuyang Teachers College, Fuyang 236037, People's Republic of China
| | - Hebin Li
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, People's Republic of China
| | - Liangquan Sheng
- School of Chemistry and Material Engineering, Fuyang Teachers College, Fuyang 236037, People's Republic of China
| | - Xiaobo Zhang
- Key Laboratory of Conservation Biology for Endangered Wildlife of Ministry of Education and College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China.
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20
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Immobilization of pullulanase onto activated magnetic chitosan/Fe3O4 nanoparticles prepared by in situ mineralization and effect of surface functional groups on the stability. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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A novel mechanism of protein thermostability: a unique N-terminal domain confers heat resistance to Fe/Mn-SODs. Sci Rep 2014; 4:7284. [PMID: 25445927 PMCID: PMC4250934 DOI: 10.1038/srep07284] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 11/14/2014] [Indexed: 11/22/2022] Open
Abstract
Superoxide dismutases (SODs), especially thermostable SODs, are widely applied in medical treatments, cosmetics, food, agriculture, and other industries given their excellent antioxidant properties. A novel thermostable cambialistic SOD from Geobacillus thermodenitrificans NG80-2 exhibits maximum activity at 70°C and high thermostability over a broad range of temperatures (20–80°C). Unlike other reported SODs, this enzyme contains an extra repeat-containing N-terminal domain (NTD) of 244 residues adjacent to the conserved functional SODA domain. Deletion of the NTD dramatically decreased its optimum active temperature (OAT) to 30°C and also impaired its thermostability. Conversely, appending the NTD to a mesophilic counterpart from Bacillus subtilis led to a moderately thermophilic enzyme (OAT changed from 30 to 55°C) with improved heat resistance. Temperature-dependant circular dichroism analysis revealed the enhanced conformational stability of SODs fused with this NTD. Furthermore, the NTD also contributes to the stress resistance of host proteins without altering their metal ion specificity or oligomerisation form except for a slight effect on their pH profile. We therefore demonstrate that the NTD confers outstanding thermostability to the host protein. To our knowledge, this is the first discovery of a peptide capable of remarkably improving protein thermostability and provides a novel strategy for bioengineering thermostable SODs.
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22
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A novel method for pullulanase immobilized onto magnetic chitosan/Fe3O4 composite nanoparticles by in situ preparation and evaluation of the enzyme stability. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.08.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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23
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Salam JA, Das N. Degradation of lindane by a novel embedded bio-nano hybrid system in aqueous environment. Appl Microbiol Biotechnol 2014; 99:2351-60. [PMID: 25304880 DOI: 10.1007/s00253-014-6112-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/09/2014] [Accepted: 09/22/2014] [Indexed: 10/24/2022]
Abstract
The objective of this study was to evaluate the effect of an embedded bio-nano hybrid system using nanoscale zinc oxide (n-ZnO) and lindane-degrading yeast Candida VITJzN04 for lindane degradation. Nano-embedding of the yeast was done with chemically synthesized n-ZnO particles (50 mg/mL) and was visualized by atomic force microscope (AFM) and scanning electron microscope (SEM). Nanoparticles were embedded substantially on the surfaces of the yeast cells and translocated into the cell cytoplasm without causing any lethal effect to the cell until 50 mg/mL. Lindane (600 mg/L) degradation was studied both in the individual and hybrid system. Rapid reductive-dechlorination of lindane was attained with n-ZnO under illuminated conditions, with the generation of chlorobenzene and benzene as dechlorination products. The bio-nano hybrid was found to be more effective compared to the native yeasts for lindane degradation and resulted in complete removal within 3 days. The kinetic data analysis implied that the half-life of lindane was 9 h for bio-nano hybrid and 28 h for Candida VITJzN04. The enhanced lindane degradation by bio-nano hybrid might be due to increased porosity and permeability of the yeast cell membrane, facilitating the easy entry of lindane into cell cytoplasm and n-ZnO-mediated dechlorination. To the best of our knowledge, this report, for the first time, suggests the use of n-ZnO-mediated dechlorination of lindane and the novel bio-nano hybrid system that reduces the half-life to one third of the time taken by the yeast alone. The embedded bio-nano hybrid system may be exploited as an effective remediation tool for the treatment of lindane-contaminated wastewaters.
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Affiliation(s)
- Jaseetha Abdul Salam
- Bioremediation Lab, Environmental Biotechnology Division, School of Biosciences and Technology, VIT University, Vellore, Tamil Nadu, India
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24
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Zhou J, Zhang J, Gao W. Enhanced and selective delivery of enzyme therapy to 9L-glioma tumor via magnetic targeting of PEG-modified, β-glucosidase-conjugated iron oxide nanoparticles. Int J Nanomedicine 2014; 9:2905-17. [PMID: 24959078 PMCID: PMC4061166 DOI: 10.2147/ijn.s59556] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The stability of enzyme-conjugated magnetic iron oxide nanoparticles in plasma is of great importance for in vivo delivery of the conjugated enzyme. In this study, β-glucosidase was conjugated on aminated magnetic iron oxide nanoparticles using the glutaraldehyde method (β-Glu-MNP), and further PEGylated via N-hydroxysuccinimide chemistry. The PEG-modified, β-glucosidase-immobilized magnetic iron oxide nanoparticles (PEG-β-Glu-MNPs) were characterized by hydrodynamic diameter distribution, zeta potential, Fourier transform infrared spectroscopy, transmission electron microscopy, and a superconducting quantum interference device. The results showed that the multidomain structure and magnetization properties of these nanoparticles were conserved well throughout the synthesis steps, with an expected diameter increase and zeta potential shifts. The Michaelis constant was calculated to evaluate the activity of conjugated β-glucosidase on the magnetic iron oxide nanoparticles, indicating 73.0% and 65.4% of enzyme activity remaining for β-Glu-MNP and PEG-β-Glu-MNP, respectively. Both magnetophoretic mobility analysis and pharmacokinetics showed improved in vitro/in vivo stability of PEG-β-Glu-MNP compared with β-Glu-MNP. In vivo magnetic targeting of PEG-β-Glu-MNP was confirmed by magnetic resonance imaging and electron spin resonance analysis in a mouse model of subcutaneous 9L-glioma. Satisfactory accumulation of PEG-β-Glu-MNP in tumor tissue was successfully achieved, with an iron content of 627±45 nmol Fe/g tissue and β-glucosidase activity of 32.2±8.0 mU/g tissue.
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Affiliation(s)
- Jie Zhou
- Department of Urology, Hubei Hospital of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, People's Republic of China
| | - Jian Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Wenxi Gao
- Department of Urology, Hubei Hospital of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, People's Republic of China
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25
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Ibrahim AS, Al-Salamah AA, El-Toni AM, El-Tayeb MA, Elbadawi YB. Cyclodextrin glucanotransferase immobilization onto functionalized magnetic double mesoporous core–shell silica nanospheres. ELECTRON J BIOTECHN 2014. [DOI: 10.1016/j.ejbt.2014.01.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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26
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Buzoglu L, Maltas E, Ozmen M, Yildiz S. Interaction of donepezil with human serum albumin on amine-modified magnetic nanoparticles. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.03.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Haikarainen T, Frioux C, Zhnag LQ, Li DC, Papageorgiou AC. Crystal structure and biochemical characterization of a manganese superoxide dismutase from Chaetomium thermophilum. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1844:422-9. [PMID: 24316252 DOI: 10.1016/j.bbapap.2013.11.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/20/2013] [Accepted: 11/23/2013] [Indexed: 10/25/2022]
Abstract
A manganese superoxide dismutase from the thermophilic fungus Chaetomium thermophilum (CtMnSOD) was expressed in Pichia pastoris and purified to homogeneity. Its optimal temperature was 60°C with approximately 75% of its activity retained after incubation at 70°C for 60min. Recombinant yeast cells carrying C. thermophilum mnsod gene exhibited higher stress resistance to salt and oxidative stress-inducing agents than control yeast cells. In an effort to provide structural insights, CtMnSOD was crystallized and its structure was determined at 2.0Å resolution. The overall architecture of CtMnSOD was found similar to other MnSODs with highest structural similarities obtained against a MnSOD from the thermotolerant fungus Aspergillus fumigatus. In order to explain its thermostability, structural and sequence analysis of CtMnSOD with other MnSODs was carried out. An increased number of charged residues and an increase in the number of intersubunit salt bridges and the Thr:Ser ratio were identified as potential reasons for the thermostability of CtMnSOD.
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Affiliation(s)
- Teemu Haikarainen
- Turku Centre for Biotechnology, University of Turku, BioCity, Turku 20521, Finland; Åbo Akademi University, BioCity, Turku 20521, Finland
| | - Clémence Frioux
- Turku Centre for Biotechnology, University of Turku, BioCity, Turku 20521, Finland; Åbo Akademi University, BioCity, Turku 20521, Finland
| | - Li-Qing Zhnag
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong 271018, China; Department of Chemistry and Chemical Engineering, Taishan Medical College, Taian, Shandong 271016, China
| | - Duo-Chuan Li
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - Anastassios C Papageorgiou
- Turku Centre for Biotechnology, University of Turku, BioCity, Turku 20521, Finland; Åbo Akademi University, BioCity, Turku 20521, Finland.
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28
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Song C, Sheng L, Zhang X. Immobilization and characterization of a thermostable lipase. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:659-667. [PMID: 23748908 DOI: 10.1007/s10126-013-9515-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 05/16/2013] [Indexed: 06/02/2023]
Abstract
Lipases have found a number of commercial applications. However, thermostable lipase immobilized on nanoparticle is not extensively characterized. In this study, a recombinant thermostable lipase (designated as TtL) from Thermus thermophilus WL was expressed in Escherichia coli and immobilized onto 3-APTES-modified Fe3O4@SiO2 supermagnetic nanoparticles. Based on analyses with tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis, X-ray diffraction, transmission electron microscopy, and vibrating sample magnetometer observation, the diameter of immobilized lipase nanoparticle was 18.4 (± 2.4) nm, and its saturation magnetization value was 52.3 emu/g. The immobilized lipase could be separated from the reaction medium rapidly and easily in a magnetic field. The biochemical characterizations revealed that, comparing with the free one, the immobilized lipase exhibited better resistance to temperature, pH, metal ions, enzyme inhibitors, and detergents. The K m value for the immobilized TtL (2.56 mg/mL) was found to be lower than that of the free one (3.74 mg/mL), showing that the immobilization improved the affinity of lipase for its substrate. In addition, the immobilized TtL exhibited good reusability. It retained more than 79.5 % of its initial activity after reusing for 10 cycles. Therefore, our study presented that the possibility of the efficient reuse of the thermostable lipase immobilized on supermagnetic nanoparticles made it attractive from the viewpoint of practical application.
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Affiliation(s)
- Chongfu Song
- Key Laboratory of Conservation Biology for Endangered Wildlife of Ministry of Education and College of Life Sciences, Zhejiang University, Hangzhou, 310058, The People's Republic of China
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29
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Cloning and characterization of a new manganese superoxide dismutase from deep-sea thermophile Geobacillus sp. EPT3. World J Microbiol Biotechnol 2013; 30:1347-57. [DOI: 10.1007/s11274-013-1536-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022]
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30
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Zhou J, Zhang J, David AE, Yang VC. Magnetic tumor targeting of β-glucosidase immobilized iron oxide nanoparticles. NANOTECHNOLOGY 2013; 24:375102. [PMID: 23974977 PMCID: PMC4039207 DOI: 10.1088/0957-4484/24/37/375102] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Directed enzyme/prodrug therapy (DEPT) has promising application for cancer therapy. However, most current DEPT strategies face shortcomings such as the loss of enzyme activity during preparation, low delivery and transduction efficiency in vivo and difficultly of monitoring. In this study, a novel magnetic directed enzyme/prodrug therapy (MDEPT) was set up by conjugating β-glucosidase (β-Glu) to aminated, starch-coated, iron oxide magnetic iron oxide nanoparticles (MNPs), abbreviated as β-Glu-MNP, using glutaraldehyde as the crosslinker. This β-Glu-MNP was then characterized in detail by size distribution, zeta potential, FTIR spectra, TEM, SQUID and magnetophoretic mobility analysis. Compared to free enzyme, the conjugated β-Glu on MNPs retained 85.54% ± 6.9% relative activity and showed much better temperature stability. The animal study results showed that β-Glu-MNP displays preferable pharmacokinetics characteristics in relation to MNPs. With an adscititious magnetic field on the surface of a tumor, a significant quantity of β-Glu-MNP was selectively delivered into a subcutaneous tumor of a glioma-bearing mouse. Remarkably, the enzyme activity of the delivered β-Glu in tumor lesions showed as high as 20.123±5.022 mU g(-1) tissue with 2.14 of tumor/non-tumor β-Glu activity.
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Affiliation(s)
- Jie Zhou
- Department of Urology, The First Affiliated Hospital, Guangxi Medical University, 6 Shuangyong Road, Nanning, Guangxi, People's Republic of China.
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