1
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Sari TP, Dhamane AH, Pawar K, Bajaj M, Badgujar PC, Tarafdar A, Bodana V, Pareek S. High-pressure microfluidisation positively impacts structural properties and improves functional characteristics of almond proteins obtained from almond meal. Food Chem 2024; 448:139084. [PMID: 38569403 DOI: 10.1016/j.foodchem.2024.139084] [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: 10/02/2023] [Revised: 03/07/2024] [Accepted: 03/18/2024] [Indexed: 04/05/2024]
Abstract
Almond protein isolate (API) obtained from almond meal was processed using dynamic high-pressure microfluidisation (0, 40, 80, 120, and 160 MPa pressure; single pass). Microfluidisation caused significant reductions in the particle size and increased absolute zeta potential. SDS-PAGE analysis indicated reduction in band intensity and the complete disappearance of bands beyond 80 MPa. Structural analysis (by circular dichroism, UV-Vis, and intrinsic-fluorescence spectra) of the API revealed disaggregation (up to 80 MPa) and then re-aggregation beyond 80 MPa. Significant increments in protein digestibility (1.16-fold) and the protein digestibility corrected amino acid score (PDCAAS; 1.15-fold) were observed for the API (80 MPa) than control. Furthermore, significant improvements (P < 0.05) in the functional properties were observed, viz., the antioxidant activity, protein solubility, and emulsifying properties. Overall, the results revealed that moderate microfluidisation treatment (80 MPa) is an effective and sustainable technique for enhancing physico-chemical and functional attributes of API, thus potentially enabling its functional food/nutraceuticals application.
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Affiliation(s)
- T P Sari
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India
| | - Amresh H Dhamane
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India
| | - Kamlesh Pawar
- Centre of Excellence in Epigenetics, Department of Life Sciences, Shiv Nadar Institution of Eminence, Delhi NCR 201 314, India
| | - Mudit Bajaj
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India
| | - Prarabdh C Badgujar
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India.
| | - Ayon Tarafdar
- Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243 122, Uttar Pradesh, India
| | - Vikrant Bodana
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India
| | - Sunil Pareek
- Department of Agriculture and Environmental Sciences, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat 131 028, Haryana, India
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2
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Jang BG, Choi B, Kim MJ. Pyrogallol intermediates elicit beta-amyloid secretion via radical formation and alterations in intracellular trafficking, distinct from pyrogallol-generated superoxide. Redox Biol 2024; 73:103180. [PMID: 38795546 PMCID: PMC11140794 DOI: 10.1016/j.redox.2024.103180] [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: 04/03/2024] [Revised: 04/29/2024] [Accepted: 05/01/2024] [Indexed: 05/28/2024] Open
Abstract
This study unveils a novel role of pyrogallol (PG), a recognized superoxide generator, in inducing beta-amyloid (Aβ) secretion in an Alzheimer's disease (AD) cellular model. Contrary to expectations, the analysis of dihydroethidium fluorescence and UV-VIS spectrum scanning reveals that Aβ secretion arises from PG reaction intermediates rather than superoxide or other by-products. Investigation into Aβ secretion mechanisms identifies dynasore-dependent endocytosis and BFA-dependent exocytosis as independent pathways, regulated by tiron, tempol, and superoxide dismutase. Cell-type specificity is observed, with 293sw cells showing both pathways, while H4sw cells and primary astrocytes from an AD animal model exclusively exhibit the Aβ exocytosis pathway. This exploration contributes to understanding PG's chemical reactions and provides insights into the interplay between environmental factors, free radicals, and AD, linking occupational PG exposure to AD risk as reported in the literature.
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Affiliation(s)
- Bong-Geum Jang
- Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, 24252, South Korea
| | - Boyoung Choi
- Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, 24252, South Korea
| | - Min-Ju Kim
- Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, 24252, South Korea; Department of Anatomy and Neurobiology, College of Medicine, Hallym University, Chuncheon, 24252, South Korea.
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3
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Li K, Li Z, Zhang J, Wang J, Yu Y, Zhou M, Wang Q, Wang P. Eco-friendly shrink-resist finishing of wool through synergistic effect of disulfide bond reducing agent and papain. Int J Biol Macromol 2024; 273:133156. [PMID: 38878932 DOI: 10.1016/j.ijbiomac.2024.133156] [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: 03/27/2024] [Revised: 06/02/2024] [Accepted: 06/12/2024] [Indexed: 07/07/2024]
Abstract
The environmental benefits of utilizing protease as a biocatalyst for wool shrink-resist finishing have been widely recognized. However, the efficacy of individual protease treatment is unsatisfactory due to its incapability towards the outermost cuticle layer of wool fibers that contains hydrophobic fatty acids. In order to weaken the structural integrity of the highly cross-linked scales and promote the enzymatic anti-felting, sodium sulfite and tris (2-carboxyethyl) phosphine hydrochloride (TCEP) were employed in combination with papain, respectively, aiming at obtaining a low shrinkage without unacceptable fiber damages. Based on the synergistic effect of papain and TCEP, the edges of wool scales were slightly destroyed by the reduction of disulfide bonds, accompanied by enzymatic hydrolysis of the keratin component. Through the controlled reduction and hydrolysis of wool scales, satisfactory anti-felting result was achieved without causing severe damage to the fiber interiors. In the presence of 0.25 g/L TCEP and 25 U/mL papain, the area shrinkage of wool fabric decreased to approximately 6 %, with a low strength loss of less than 8 %. Meanwhile, the dyeing behavior of the wool fabric under low-temperature conditions was dramatically improved, leading to decreased energy consumption during production. The present work provides an alternative for eco-friendly finishing of wool fabrics, which can be applied commercially.
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Affiliation(s)
- Kun Li
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Zirong Li
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Jiaqi Zhang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Jun Wang
- Shandong Nanshan Zhishang Technology Co., Ltd., Longkou, China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Man Zhou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, China.
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4
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Cruz FT, Rosa DP, Vasconcelos AVB, de Oliveira JS, Bleicher L, Santos AMC. Purification and partial physical-chemical characterization of a new bovine trypsin proteoform (zeta-trypsin). Int J Biol Macromol 2024; 268:131860. [PMID: 38670206 DOI: 10.1016/j.ijbiomac.2024.131860] [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: 12/03/2023] [Revised: 04/01/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Recent advancements in enzyme research have unveiled a new proteoform of bovine trypsin, expanding our understanding of this well-characterized enzyme. While generally similar to other trypsins, this novel proteoform comprises three polypeptide chains, marking a significant difference in activity, kinetic properties, and conformational stability. Compared with the already known bovine trypsin proteoforms, the results showed a lower: activity, kcat and kcat.KM-1 and protein 'foldedness' ratio for the new proteoform. Molecular autolysis, a common feature in trypsin and chymotrypsin, has been explored through comparative physical chemistry properties with other proteoforms. This new proteoform of trypsin not only enriches the existing enzyme repertoire but also promises to shed light on the intricate physiological pathway for enzyme inactivation. Our results suggest that the new trypsin proteoform is one of the likely final pathways for enzyme inactivation in a physiological environment. This discovery opens up new avenues for further research into the functional implications of this new trypsin proteoform.
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Affiliation(s)
- Fabiano Torres Cruz
- Pos-Graduate Program of Biotechnology - Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Dayanne Pinho Rosa
- Pos-Graduate Program of Biochemistry - Federal University of Espírito Santo, Vitória, ES, Brazil
| | | | - Jamil Silvano de Oliveira
- Department of Biochemistry and Immunology - Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lucas Bleicher
- Department of Biochemistry and Immunology - Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Pos-Graduate at Biochemistry and Immunology - Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alexandre Martins Costa Santos
- Pos-Graduate Program of Biotechnology - Federal University of Espírito Santo, Vitória, ES, Brazil; Pos-Graduate Program of Biochemistry - Federal University of Espírito Santo, Vitória, ES, Brazil.
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5
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Liu Q, Chen T, Chen L, Zhao R, Ye X, Wang X, Wu D, Hu J. High Internal Phase Emulsions Stabilized with Ultrasound-Modified Spirulina Protein for Curcumin Delivery. Foods 2024; 13:1324. [PMID: 38731694 PMCID: PMC11083376 DOI: 10.3390/foods13091324] [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: 03/24/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Spirulina protein (SP) is recognized as a nutritious edible microbial protein and holds potential as a natural emulsifier. Due to the inherent challenges SP faces in stabilizing high internal phase emulsions (HIPEs), ultrasonic techniques were utilized for modification. Noticeable alterations in the structural and functional properties of SP were observed following ultrasonic treatment at various power levels (0, 100, 300, and 500 W). Ultrasound treatment disrupted non-covalent interactions within the protein polymer structure, leading to the unfolding of molecular structures and the exposure of hydrophobic groups. Importantly, the particle size of SP was reduced the most at an ultrasonic power of 300 W, and the three-phase contact angle reached its peak at 84.3°. The HIPEs stabilized by SP modified with 300 W ultrasonication have high apparent viscosity and modulus values and strong storage stability under different environmental conditions. Additionally, the encapsulation of curcumin in HIPEs led to improved retention of curcumin across various settings. The bioavailability increased to 35.36, which is 2.8 times higher than the pure oil. These findings suggest that ultrasound-modified SP is a promising emulsifier for HIPEs, and is expected to encapsulate hydrophobic nutrients such as curcumin more effectively.
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Affiliation(s)
- Qing Liu
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Tao Chen
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Lihang Chen
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Runan Zhao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China;
| | - Ximei Ye
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Xinchuang Wang
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Di Wu
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Jiangning Hu
- State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; (Q.L.); (T.C.); (L.C.); (X.Y.); (X.W.); (D.W.)
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
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6
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Westwood F, Ponstingl M, Dickens JE. Analytical figures of merit of a dual-wavelength absorbance approach for real-time broad protein content monitoring for biomanufacturing. J Pharm Biomed Anal 2024; 241:115965. [PMID: 38237541 DOI: 10.1016/j.jpba.2024.115965] [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: 11/09/2023] [Revised: 12/21/2023] [Accepted: 01/04/2024] [Indexed: 02/21/2024]
Abstract
Real-time in-line broad protein content monitoring in biomanufacturing downstream unit operations enables the ability to optimize and afford consistent protein recovery. Protein determination from 2 to 400 mg/mL is demonstrated herein via real-time dual-wavelength LED photometric sensor configured at 280 and 310 nm. The figures of merit of this approach include measurement accuracy within the common acceptance criteria of 100 % ± 5 with negligible bias across the linear dynamic ranges. This work expands the utility of an LED based photometric sensor for biopharmaceutical process analytical technology (PAT) applications. It is also congruent with process digitalization and automation industry 4.0 concepts underpinned by Quality by Design (QbD) principles.
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Affiliation(s)
- Frank Westwood
- Custom Sensors and Technology Inc., 531 Axminister Dr, Fenton, MO 63026, USA
| | - Michael Ponstingl
- Custom Sensors and Technology Inc., 531 Axminister Dr, Fenton, MO 63026, USA
| | - Jason E Dickens
- Custom Sensors and Technology Inc., 531 Axminister Dr, Fenton, MO 63026, USA.
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7
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Viswanathan VP, Kulandhaivelu SV, Manivasakan K, Ramakrishnan R. Development of biodegradable packaging films from carboxymethyl cellulose and oxidised natural rubber latex. Int J Biol Macromol 2024; 262:129980. [PMID: 38340932 DOI: 10.1016/j.ijbiomac.2024.129980] [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: 10/02/2023] [Revised: 01/26/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024]
Abstract
The present study investigates the biopolymer packaging film developed from carboxymethyl cellulose (CMC) with varying concentrations of natural rubber latex (NR) and oxidised natural rubber latex (ONR) using the solvent casting method. The physicochemical properties of the CMC/NR and CMC/ONR film samples were characterised using FTIR, TG/DTA, DSC, SEM, and XRD analysis. The increased concentration of NR and ONR helped to enhance mechanical characteristics, superior UV resistance, enhanced resistance to oxygen and water vapour penetration, improved dimensional stability, and a reduction in the moisture retention ability of the film samples. The CMC sample film, incorporated with 1.5 g ONR, was found to have more than a 100 % increase in the tensile strength. The tensile value increased from 21.56 MPa to 48.36 MPa, with the highest young modulus of 0.73 GPa and elastic stability of 7.14 %. The incorporation of NR and ONR significantly reduced the super water absorbency nature of the CMC film, and the moisture content values reduced from 21.6 % to ≅ 0.15 % for ONR-incorporated film. Additionally, the CMC/NR and CMC/ONR films exhibited high optical transparency values and were found to be fast biodegradable, substantiating their potential use in various packaging applications. Application of these materials in perishable fruit packaging has shown significant enhancement in shelf life, highlighting their practical efficiency and potential for sustainable packaging solutions.
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Affiliation(s)
- Vismaya P Viswanathan
- Department of Printing and Packaging Technology, College of Engineering Guindy, Anna University, Chennai 600 005, India.
| | - Senthil Vadivu Kulandhaivelu
- Department of Printing and Packaging Technology, College of Engineering Guindy, Anna University, Chennai 600 005, India
| | - Kanchana Manivasakan
- Department of Printing and Packaging Technology, College of Engineering Guindy, Anna University, Chennai 600 005, India
| | - Rejish Ramakrishnan
- Department of Printing and Packaging Technology, College of Engineering Guindy, Anna University, Chennai 600 005, India
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8
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Devitt G, Johnson PB, Hanrahan N, Lane SIR, Vidale MC, Sheth B, Allen JD, Humbert MV, Spalluto CM, Hervé RC, Staples K, West JJ, Forster R, Divecha N, McCormick CJ, Crispin M, Hempler N, Malcolm GPA, Mahajan S. Mechanisms of SARS-CoV-2 Inactivation Using UVC Laser Radiation. ACS PHOTONICS 2024; 11:42-52. [PMID: 38249683 PMCID: PMC10797618 DOI: 10.1021/acsphotonics.3c00828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 01/23/2024]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-Cov-2) has had a tremendous impact on humanity. Prevention of transmission by disinfection of surfaces and aerosols through a chemical-free method is highly desirable. Ultraviolet C (UVC) light is uniquely positioned to achieve inactivation of pathogens. We report the inactivation of SARS-CoV-2 virus by UVC radiation and explore its mechanisms. A dose of 50 mJ/cm2 using a UVC laser at 266 nm achieved an inactivation efficiency of 99.89%, while infectious virions were undetectable at 75 mJ/cm2 indicating >99.99% inactivation. Infection by SARS-CoV-2 involves viral entry mediated by the spike glycoprotein (S), and viral reproduction, reliant on translation of its genome. We demonstrate that UVC radiation damages ribonucleic acid (RNA) and provide in-depth characterization of UVC-induced damage of the S protein. We find that UVC severely impacts SARS-CoV- 2 spike protein's ability to bind human angiotensin-converting enzyme 2 (hACE2) and this correlates with loss of native protein conformation and aromatic amino acid integrity. This report has important implications for the design and development of rapid and effective disinfection systems against the SARS-CoV-2 virus and other pathogens.
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Affiliation(s)
- George Devitt
- School
of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Peter B. Johnson
- School
of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Niall Hanrahan
- School
of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Simon I. R. Lane
- School
of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Magdalena C. Vidale
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Bhavwanti Sheth
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Joel D. Allen
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Maria V. Humbert
- Clinical
and Experimental Sciences, Faculty of Medicine, University of Southampton,
Sir Henry Wellcome Laboratories, University
Hospital Southampton, Southampton SO16 6YD, United
Kingdom
- University
of Cambridge, MRC Toxicology Unit, Cambridge, CB2 1QR, United Kingdom
| | - Cosma M. Spalluto
- Clinical
and Experimental Sciences, Faculty of Medicine, University of Southampton,
Sir Henry Wellcome Laboratories, University
Hospital Southampton, Southampton SO16 6YD, United
Kingdom
- Southampton
NIHR Biomedical Research Centre, Southampton
General Hospital, Southampton SO16 6YD, United
Kingdom
| | - Rodolphe C. Hervé
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Karl Staples
- Clinical
and Experimental Sciences, Faculty of Medicine, University of Southampton,
Sir Henry Wellcome Laboratories, University
Hospital Southampton, Southampton SO16 6YD, United
Kingdom
- Wessex Investigational
Sciences Hub, University of Southampton Faculty of Medicine, Southampton General Hospital, Southampton SO16 6YD, United Kingdom
- Southampton
NIHR Biomedical Research Centre, Southampton
General Hospital, Southampton SO16 6YD, United
Kingdom
| | - Jonathan J. West
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Cancer
Sciences, Faculty of Medicine, University
of Southampton, Southampton SO16 6YD, United
Kingdom
| | - Robert Forster
- M Squared
Lasers, Limited, 1 K
Campus, West of Scotland Science Park, Glasgow, G20 0SP, United
Kingdom
| | - Nullin Divecha
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Christopher J. McCormick
- Clinical
and Experimental Sciences, Faculty of Medicine, University of Southampton,
Sir Henry Wellcome Laboratories, University
Hospital Southampton, Southampton SO16 6YD, United
Kingdom
| | - Max Crispin
- School
of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Nils Hempler
- M Squared
Lasers, Limited, 1 K
Campus, West of Scotland Science Park, Glasgow, G20 0SP, United
Kingdom
| | - Graeme P. A. Malcolm
- M Squared
Lasers, Limited, 1 K
Campus, West of Scotland Science Park, Glasgow, G20 0SP, United
Kingdom
| | - Sumeet Mahajan
- School
of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Institute
for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
- Department
of Biotechnology, Inland Norway University
of Applied Sciences, Holsetgata 22, N-2317 Hamar, Norway
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9
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Kumar Barik A, Mathew C, Sanoop PM, John RV, Adigal SS, Bhat S, Pai KM, Bhandary SV, Devasia T, Upadhya R, Kartha VB, Chidangil S. Protein profile pattern analysis: A multifarious, in vitro diagnosis technique for universal screening. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1232:123944. [PMID: 38056315 DOI: 10.1016/j.jchromb.2023.123944] [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: 09/01/2023] [Revised: 11/23/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
Universal health care is attracting increased attention nowadays, because of the large increase in population all over the world, and a similar increase in life expectancy, leading to an increase in the incidence of non-communicable (various cancers, coronary diseases, neurological and old-age-related diseases) and communicable diseases/pandemics like SARS-COVID 19. This has led to an immediate need for a healthcare technology that should be cost-effective and accessible to all. A technology being considered as a possible one at present is liquid biopsy, which looks for markers in readily available samples like body fluids which can be accessed non- or minimally- invasive manner. Two approaches are being tried now towards this objective. The first involves the identification of suitable, specific markers for each condition, using established methods like various Mass Spectroscopy techniques (Surface-Enhanced Laser Desorption/Ionization Mass Spectroscopy (SELDI-MS), Matrix-Assisted Laser Desorption/Ionization (MALDI-MS), etc., immunoassays (Enzyme-Linked Immunoassay (ELISA), Proximity Extension Assays, etc.) and separation methods like 2-Dimensional Polyacrylamide Gel Electrophoresis (2-D PAGE), Sodium Dodecyl-Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE), Capillary Electrophoresis (CE), etc. In the second approach, no attempt is made the identification of specific markers; rather an efficient separation method like High-Performance Liquid Chromatography/ Ultra-High-Performance Liquid Chromatography (HPLC/UPLC) is used to separate the protein markers, and a profile of the protein pattern is recorded, which is analysed by Artificial Intelligence (AI)/Machine Learning (MI) methods to derive characteristic patterns and use them for identifying the disease condition. The present report gives a summary of the current status of these two approaches and compares the two in the use of their suitability for universal healthcare.
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Affiliation(s)
- Ajaya Kumar Barik
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Clint Mathew
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Pavithran M Sanoop
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Reena V John
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Sphurti S Adigal
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Sujatha Bhat
- Division of Microbiology, Department of Basic Medical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Keerthilatha M Pai
- Department of Dental Surgery, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Gangtok, Sikkim 737102, India
| | - Sulatha V Bhandary
- Department of Ophthalmology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Tom Devasia
- Department of Cardiology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Rekha Upadhya
- Department of Obstetrics and Gynecology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - V B Kartha
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Santhosh Chidangil
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
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10
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Li Y, Chen M, Liu H, Zhang D, Shi QS, Xie XB, Guo Y. Antimicrobial Peptide-Inspired Design of Amino-Modified Lignin with Improved Antimicrobial Activities. Biomacromolecules 2023; 24:5381-5393. [PMID: 37908117 DOI: 10.1021/acs.biomac.3c00841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
A major challenge to make use of lignin as an antimicrobial material is the weak antimicrobial activity of industrial lignin. Inspired by the antimicrobial mechanism of actions of antimicrobial peptides, alkyldiamines were employed as lysine mimics for lignin modifications. Accordingly, aminoalkyl-modified lignins with different degrees of substitution of amino groups and different hydrophobicity were synthesized. The chemical structure, properties, and antimicrobial activities of the as-prepared aminoalkyl lignins were thoroughly characterized with state-of-the-art technologies. The results indicated that aminobutyl lignin showed enhanced antimicrobial activity against S. aureus and E. coli and performed even better than copper ions. The antimicrobial mechanism of action of the as-prepared aminobutyl lignin was similar to that of polylysine, which damaged the cell membrane, leading to the leakage of intracellular molecules and death of the cell. This study provides a feasible approach to afford modified lignin with enhanced antimicrobial performance, which would facilitate the high-value valorization of lignin as biological materials.
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Affiliation(s)
- Yan Li
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Mingjie Chen
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Huiming Liu
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Dandan Zhang
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Qing-Shan Shi
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Xiao-Bao Xie
- Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Yanzhu Guo
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
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11
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Conceição CJF, Salgueiro BA, Ribeiro PA, Raposo M, Moe E. Advances in the expression and purification of human PARP1: A user-friendly protocol. Protein Expr Purif 2023; 211:106336. [PMID: 37419399 DOI: 10.1016/j.pep.2023.106336] [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: 05/11/2023] [Revised: 06/19/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
The PARP1 (Poly (ADP-ribose) polymerase 1) enzyme is essential for single and double-strand break repair in humans. Alterations affecting PARP1 activity have severe consequences for human health and are associated with pathologies like cancer, and metabolic and neurodegenerative disorders. Here, we have developed a fast and easy procedure for the expression and purification of PARP1. Biologically active protein was purified to an apparent purity > 95%, with only two purification steps. A thermostability analysis revealed that PARP1 possessed improved stability in 50 mM Tris-HCl pH 8.0 (Tm = 44.2 ± 0.3 °C), thus this buffer was used throughout the whole purification procedure. The protein was shown to bind to DNA and has no inhibitor molecules bound to the active site. Finally, the yield of the purified PARP1 protein is sufficient for both biochemical, biophysical and structural analysis. The new protocol provides a fast and simple purification procedure while producing similar protein quantities to what has been described previously.
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Affiliation(s)
- Carlota J F Conceição
- CEFITEC, Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal; Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
| | - Bruno A Salgueiro
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal.
| | - Paulo A Ribeiro
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
| | - Maria Raposo
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
| | - Elin Moe
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal; Department of Chemistry, UiT - the Arctic University of Norway, Tromsø, Norway.
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12
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Waters LJ, Whiteley J, Small W, Mellor S. Determining suitable surfactant concentration ranges to avoid protein unfolding in pharmaceutical formulations using UV analysis. Heliyon 2023; 9:e21712. [PMID: 37954313 PMCID: PMC10632529 DOI: 10.1016/j.heliyon.2023.e21712] [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: 03/03/2023] [Revised: 09/08/2023] [Accepted: 10/26/2023] [Indexed: 11/14/2023] Open
Abstract
Protein stability is fundamental to maintain pharmaceutical efficacy in the nascent field of biologics. One particular property that is essential for therapeutic effect is retention of the folded 3-dimensional conformation, i.e. once unfolding has occurred the biologic is often rendered inactive. In this work we propose a modified form of a recently published UV spectroscopic method that identifies protein unfolding. In this study we determine concentration limits to avoid protein unfolding of two model surfactants, namely polysorbate 20 and polysorbate 80, by correlating surfactant concentration with percentage 'unfolded' for three model proteins. For each scenario two distinct regions were observed, firstly surfactant concentrations at which no unfolding had occurred, followed by a second region whereby unfolding steadily increased with surfactant concentration. In general for the combinations analysed in this study, this second region began to appear around ten times below the critical micellar concentration of each surfactant, regardless of the protein or polysorbate chosen. It is therefore proposed that this adapted method could be used by researchers in the early stages of formulation development as a convenient and simple screening tool to confirm the 'onset of unfolding' concentration for protein-surfactant formulations, thus helping to optimise surfactant concentration selection in pharmaceutical formulations to maintain the benefits of surfactants yet avoid inadvertent unfolding.
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Affiliation(s)
- Laura J. Waters
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Joseph Whiteley
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - William Small
- Croda Europe Ltd, Cowick Hall, Snaith, Goole, DN14 9AA, UK
| | - Steve Mellor
- Croda Europe Ltd, Cowick Hall, Snaith, Goole, DN14 9AA, UK
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Liu Y, Liang Q, Liu Y, Rashid A, Qayum A, Ma H, Ren X. Effects of multi-frequency ultrasound on sodium caseinate/pectin complex: Emulsifying properties, interaction force, structure and correlation. Int J Biol Macromol 2023; 242:124801. [PMID: 37178893 DOI: 10.1016/j.ijbiomac.2023.124801] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/30/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023]
Abstract
This study aimed to improve the emulsification properties of the sodium caseinate (Cas) and pectin (Pec) complex using multi-frequency power ultrasound to regulate the complexation of Cas and Pec. The results revealed that optimal ultrasonic treatment (Frequency 60 kHz, power density 50 W/L, and time 25 min) led to a 33.12 % increase in emulsifying activity (EAI) and a 7.27 % increase in emulsifying stability index (ESI) of the Cas-Pec complex. Our results demonstrated that electrostatic interactions and hydrogen bonds were the main driving forces for complex formation, and these were reinforced by ultrasound treatment. Moreover, it was observed that ultrasonic treatment improved the surface hydrophobicity, thermal stability, and secondary structure of the complex. Scanning electron microscopy and atomic force microscopy analyses revealed that the ultrasonically prepared Cas-Pec complex had a dense, uniform spherical structure with reduced surface roughness. It was further confirmed that the complex's emulsification properties were highly correlated with its physicochemical and structural properties. Multi-frequency ultrasound changes the interaction by regulating protein structure and ultimately acting on the interfacial adsorption behavior of the complex. This work contributes to expanding the role of multi-frequency ultrasound in modifying the emulsification properties of the complex.
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Affiliation(s)
- Yuxuan Liu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Qiufang Liang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Ying Liu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Arif Rashid
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Abdul Qayum
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China
| | - Xiaofeng Ren
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, PR China.
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Munawaroh HSH, Gumilar GG, Khoiriah SF, Nindya FS, Berliana N, Aisyah S, Nuraini VA, Ningrum A, Susanto E, Martha L, Kurniawan I, Hidayati NA, Chew KW, Show PL. Valorization of Salmo salar Skin Waste for the Synthesis of Angiotensin Converting Enzyme-1 (ACE1) Inhibitory Peptides. WASTE AND BIOMASS VALORIZATION 2023:1-15. [PMID: 37363337 PMCID: PMC10156071 DOI: 10.1007/s12649-023-02141-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/09/2023] [Indexed: 06/28/2023]
Abstract
One of potential inhibitors which is widely used for the clinical treatment of COVID-19 in comorbid patients is Angiostensin Converting Enzyme-1 (ACE1) inhibitor. A safer peptide-based ACE1 inhibitor derived from salmon skin collagen, that is considered as the by-product of the fish processing industry have been investigated in this study. The inhibitory activity against ACE1 was examined using in vitro and in silico methods. In vitro analysis includes the extraction of acid-soluble collagen, characterization using FTIR, Raman, UV-Vis, XRD, cytotoxicity assay, and determination of inhibition against ACE1. In silico method visualizes binding affinity, molecular interaction, and inhibition type of intact collagen and active peptides derived from collagen against ACE1 using molecular docking. The results of FTIR spectra detected amide functional groups (A, B, I, II, III) and imine proline/hydroxyproline, while the results of Raman displayed peak absorption of amide I, amide III, proline/hydroxyproline ring, phenylalanine, and protein backbone. Furthermore, UV-Vis spectra showed typical collagen absorption at 230 nm and based on XRD data, the chain types in the samples were α-helix. ACE1 inhibition activity was obtained in a concentration-dependent manner where the highest was 82.83% and 85.84% at concentrations of 1000, and 2000 µg/mL, respectively, and showed very low cytotoxicity at the concentration less than 1000 µg/mL. In silico study showed an interaction between ACE1 and collagen outside the active site with the affinity of - 213.89 kcal/mol. Furthermore, the active peptides of collagen displayed greater affinity compared to lisinopril, namely HF (His-Phe), WYT (Trp-Tyr-Thr), and WF (Trp-Phe) of - 11.52; - 10.22; - 9.58 kcal/mol, respectively. The salmon skin-derived collagen demonstrated ACE1 inhibition activity with a non-competitive inhibition mechanism. In contrast, the active peptides were predicted as potent competitive inhibitors against ACE1. This study indicated that valorization of fish by-product can lead to the production of a promising bioactive compound to treat COVID-19 patient with diabetic comorbid. Graphical Abstract
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Affiliation(s)
- Heli Siti Halimatul Munawaroh
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Gun Gun Gumilar
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Selmi Fiqhi Khoiriah
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Faradhina Salfa Nindya
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Nur’aini Berliana
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Siti Aisyah
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Vidia Afina Nuraini
- Department of Chemistry Education, Study Program of Chemistry, UniversitasPendidikan Indonesia, Jalan Dr. Setiabudhi 229, Bandung, 40154 Indonesia
| | - Andriati Ningrum
- Department of Food Science and Agricultural Product Technology, Faculty of Agricultural Technology, Gadjah Mada University, Yogyakarta, 5528 Indonesia
| | - Eko Susanto
- Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jalan Prof. Jacub Rais Tembalang, Semarang, 50275 Indonesia
| | - Larasati Martha
- Laboratory of Biopharmaceutics, Department of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-Machi Gunma prefecture, Takasaki City, 370-0033 Japan
| | - Isman Kurniawan
- School of Computing, Telkom University, Jalan Terusan Buah Batu, Bandung, 40257 Indonesia
| | - Nur Akmalia Hidayati
- Research Center for Environmental and Clean Technology, The National Research and Innovation Agency (BRIN), Kawasan Puspitek Gd. 820, Serpong, Tanggerang Selatan, 15314 Indonesia
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459 Singapore
| | - Pau-Loke Show
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035 China
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan Malaysia
- Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105 India
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15
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Unveiling the Metal-Dependent Aggregation Properties of the C-terminal Region of Amyloidogenic Intrinsically Disordered Protein Isoforms DPF3b and DPF3a. Int J Mol Sci 2022; 23:ijms232315291. [PMID: 36499617 PMCID: PMC9738585 DOI: 10.3390/ijms232315291] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Double-PHD fingers 3 (DPF3) is a BAF-associated human epigenetic regulator, which is increasingly recognised as a major contributor to various pathological contexts, such as cardiac defects, cancer, and neurodegenerative diseases. Recently, we unveiled that its two isoforms (DPF3b and DPF3a) are amyloidogenic intrinsically disordered proteins. DPF3 isoforms differ from their C-terminal region (C-TERb and C-TERa), containing zinc fingers and disordered domains. Herein, we investigated the disorder aggregation properties of C-TER isoforms. In agreement with the predictions, spectroscopy highlighted a lack of a highly ordered structure, especially for C-TERa. Over a few days, both C-TERs were shown to spontaneously assemble into similar antiparallel and parallel β-sheet-rich fibrils. Altered metal homeostasis being a neurodegeneration hallmark, we also assessed the influence of divalent metal cations, namely Cu2+, Mg2+, Ni2+, and Zn2+, on the C-TER aggregation pathway. Circular dichroism revealed that metal binding does not impair the formation of β-sheets, though metal-specific tertiary structure modifications were observed. Through intrinsic and extrinsic fluorescence, we found that metal cations differently affect C-TERb and C-TERa. Cu2+ and Ni2+ have a strong inhibitory effect on the aggregation of both isoforms, whereas Mg2+ impedes C-TERb fibrillation and, on the contrary, enhances that of C-TERa. Upon Zn2+ binding, C-TERb aggregation is also hindered, and the amyloid autofluorescence of C-TERa is remarkably red-shifted. Using electron microscopy, we confirmed that the metal-induced spectral changes are related to the morphological diversity of the aggregates. While metal-treated C-TERb formed breakable and fragmented filaments, C-TERa fibrils retained their flexibility and packing properties in the presence of Mg2+ and Zn2+ cations.
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16
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Zhang L, Yang L, Li Y, Ma J, Du X, Cao C, Jia Y, Li R. Ultrasonic treatment of foam for the prevention of foam-induced pepsin inactivation. Colloids Surf B Biointerfaces 2022; 221:113021. [DOI: 10.1016/j.colsurfb.2022.113021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/10/2022] [Accepted: 11/12/2022] [Indexed: 11/16/2022]
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17
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Molecular crowding induced loss of native conformation and aggregation of α-chymotrypsinogen A. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Applications of Single-Molecule Vibrational Spectroscopic Techniques for the Structural Investigation of Amyloid Oligomers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196448. [PMID: 36234985 PMCID: PMC9573641 DOI: 10.3390/molecules27196448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
Amyloid oligomeric species, formed during misfolding processes, are believed to play a major role in neurodegenerative and metabolic diseases. Deepening the knowledge about the structure of amyloid intermediates and their aggregation pathways is essential in understanding the underlying mechanisms of misfolding and cytotoxicity. However, structural investigations are challenging due to the low abundance and heterogeneity of those metastable intermediate species. Single-molecule techniques have the potential to overcome these difficulties. This review aims to report some of the recent advances and applications of vibrational spectroscopic techniques for the structural analysis of amyloid oligomers, with special focus on single-molecule studies.
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Han S, Cui F, McClements DJ, Xu X, Ma C, Wang Y, Liu X, Liu F. Structural Characterization and Evaluation of Interfacial Properties of Pea Protein Isolate-EGCG Molecular Complexes. Foods 2022; 11:foods11182895. [PMID: 36141023 PMCID: PMC9498586 DOI: 10.3390/foods11182895] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/06/2022] [Accepted: 09/11/2022] [Indexed: 11/18/2022] Open
Abstract
Highlights Pea protein isolate (PPI) and EGCG spontaneously formed complexes. Protein–polyphenol complexation was mainly driven by hydrogen bonding. The binding of EGCG influenced the structure and functionality of PPI. PPI-EGCG complexes had better emulsifier properties than PPI.
Abstract There is increasing interest in using plant-derived proteins in foods and beverages for environmental, health, and ethical reasons. However, the inherent physicochemical properties and functional performance of many plant proteins limit their widespread application. Here, we prepared pea protein isolate (PPI) dispersions using a combined pH-shift/heat treatment method, and then, prepared PPI-epigallocatechin-3-gallate (EGCG) complexes under neutral conditions. Spectroscopy, calorimetry, molecular docking, and light scattering analysis demonstrated that the molecular complexes formed spontaneously. This was primarily ascribed to hydrogen bonds and van der Waals forces. The complexation of EGCG caused changes in the secondary structure of PPI, including the reduction in the α-helix and increase in the β-sheet and disordered regions. These changes slightly decreased the thermal stability of the protein. With the accretion of EGCG, the hydrophilicity of the complexes increased significantly, which improved the functional attributes of the protein. Optimization of the PPI-to-EGCG ratio led to the complexes having better foaming and emulsifying properties than the protein alone. This study could broaden the utilization of pea proteins as functional ingredients in foods. Moreover, protein–polyphenol complexes can be used as multifunctional ingredients, such as antioxidants or nutraceutical emulsifiers.
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Affiliation(s)
- Shuang Han
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Fengzhan Cui
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | | | - Xingfeng Xu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Cuicui Ma
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Yutang Wang
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Fuguo Liu
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
- Correspondence:
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20
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Mignon J, Mottet D, Leyder T, Uversky VN, Perpète EA, Michaux C. Structural characterisation of amyloidogenic intrinsically disordered zinc finger protein isoforms DPF3b and DPF3a. Int J Biol Macromol 2022; 218:57-71. [PMID: 35863661 DOI: 10.1016/j.ijbiomac.2022.07.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/08/2022] [Accepted: 07/13/2022] [Indexed: 11/05/2022]
Abstract
Double PHD fingers 3 (DPF3) is a zinc finger protein, found in the BAF chromatin remodelling complex, and is involved in the regulation of gene expression. Two DPF3 isoforms have been identified, respectively named DPF3b and DPF3a. Very limited structural information is available for these isoforms, and their specific functionality still remains poorly studied. In a previous work, we have demonstrated the first evidence of DPF3a being a disordered protein sensitive to amyloid fibrillation. Intrinsically disordered proteins (IDPs) lack a defined tertiary structure, existing as a dynamic conformational ensemble, allowing them to act as hubs in protein-protein interaction networks. In the present study, we have more thoroughly characterised DPF3a in vitro behaviour, as well as unravelled and compared the structural properties of the DPF3b isoform, using an array of predictors and biophysical techniques. Predictions, spectroscopy, and dynamic light scattering have revealed a high content in disorder: prevalence of random coil, aromatic residues partially to fully exposed to the solvent, and large hydrodynamic diameters. DPF3a appears to be more disordered than DPF3b, and exhibits more expanded conformations. Furthermore, we have shown that they both time-dependently aggregate into amyloid fibrils, as revealed by typical circular dichroism, deep-blue autofluorescence, and amyloid-dye binding assay fingerprints. Although spectroscopic and microscopic analyses have unveiled that they share a similar aggregation pathway, DPF3a fibrillates at a faster rate, likely through reordering of its C-terminal domain.
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Affiliation(s)
- Julien Mignon
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Institute of Structured Matter (NISM), University of Namur, Namur, Belgium; Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium.
| | - Denis Mottet
- University of Liège, GIGA-Molecular Biology of Diseases, Gene Expression and Cancer Laboratory, B34, Avenue de l'Hôpital, 4000 Liège, Belgium.
| | - Tanguy Leyder
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Vladimir N Uversky
- Department of Molecular Medicine, USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.
| | - Eric A Perpète
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium; Institute of Life, Earth and Environment (ILEE), University of Namur, Namur, Belgium.
| | - Catherine Michaux
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Institute of Structured Matter (NISM), University of Namur, Namur, Belgium; Namur Research Institute for Life Sciences (NARILIS), University of Namur, Namur, Belgium.
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21
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Nguyen MCT, Nguyen HQ, Jang H, Noh S, Lee SY, Jang KS, Lee J, Sohn Y, Yee K, Jung H, Kim J. Sterilization effects of UV laser irradiation on Bacillus atrophaeus spore viability, structure, and proteins. Analyst 2021; 146:7682-7692. [PMID: 34812439 DOI: 10.1039/d1an01717a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Bacillus spores are highly resistant to toxic chemicals and extreme environments. Because some Bacillus species threaten public health, spore inactivation techniques have been intensively investigated. We exposed Bacillus atrophaeus spores to a 266 nm Nd:YVO4 laser at a laser power of 1 W and various numbers of scans. As a result, the UV laser reduced the viability of Bacillus atrophaeus spores. Although the outer coat of spores remained intact after UV laser irradiation of 720 scans, damage inside the spores was observed. Spore proteins were identified by matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry during the course of UV laser irradiation. Photochemical and photothermal processes are believed to be involved in the UV laser sterilization of Bacillus spores. Our findings suggest that a UV laser is capable of sterilizing Bacillus atrophaeus spores.
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Affiliation(s)
- My-Chi Thi Nguyen
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Huu-Quang Nguyen
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Hanbyeol Jang
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Sojung Noh
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seong-Yeon Lee
- Department of Physics and Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kyoung-Soon Jang
- Biomedical Omics Center, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jaebeom Lee
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Youngku Sohn
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kiju Yee
- Department of Physics and Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Heesoo Jung
- Chem-Bio Technology Center, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon, 34186, Republic of Korea.
| | - Jeongkwon Kim
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon, Republic of Korea.
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22
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Ferreira S, Machado L, Pereira RN, Vicente AA, Rodrigues RM. Unraveling the nature of ohmic heating effects in structural aspects of whey proteins – The impact of electrical and electrochemical effects. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102831] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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23
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Huang Y, Li Z, Wu Y, Guo Y, Pavase TR, Chen G, Zhang Z, Lin H. Comparison of immunological properties of recombinant and natural turbot (Scophthalmus maximus) parvalbumin. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03771-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Influence of ohmic heating on the structural and immunoreactive properties of soybean proteins. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111710] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Gareb B, Beugeling M, Posthumus S, Otten AT, Dijkstra G, Kosterink JG, Frijlink HW. Infliximab formulation strategy for a stable ileo-colonic targeted oral dosage form intended for the topical treatment of inflammatory bowel disease. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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26
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Wong XY, Quesada-González D, Manickam S, Muthoosamy K. Fluorescence "turn-off/turn-on" biosensing of metal ions by gold nanoclusters, folic acid and reduced graphene oxide. Anal Chim Acta 2021; 1175:338745. [PMID: 34330444 DOI: 10.1016/j.aca.2021.338745] [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: 03/17/2021] [Revised: 05/30/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
Metal ions homeostasis plays an important role in biological processes. The ability to detect the concentration of metal ions in biological fluids is often challenged by the obvious interference or competitive binding nature of other alkaline metals ions. Common analytical techniques employed for metal ions detection are electrochemical, fluorescence and colorimetric methods. However, most reported metal ions sensors are complicated, time-consuming and involve costly procedures with limited effectiveness. Herein, a nanobiosensor for detecting sodium and potassium ions using folic acid-functionalised reduced graphene oxide-modified RNase A gold nanoclusters (FA-rGO-RNase A/AuNCs) based on fluorescence "turn-off/turn-on" is presented. Firstly, a facile and optimised protocol for the fabrication of RNase A/AuNCs is developed. The activity of RNase A protein after the formation of RNase A/AuNCs is studied. RNase A/AuNCs is then loaded onto FA-rGO, in which FA-rGO is used as a potential carrier and fluorescence quencher for RNase A/AuNCs. Finally, a fluorescence "turn-on" sensing strategy is developed using the as-synthesised FA-rGO-RNase A/AuNCs to detect sodium and potassium ions. The developed nanobiosensor revealed an excellent sensing performance and meets the sensitivity required to detect both sodium and potassium ions. To the best of our knowledge, this is the first work done on determining the RNase A protein activity in RNase A/AuNCs and exploring the potential application of RNase A/AuNCs as a metal ion sensor. This work serves as a proof-of-concept for combining the potential of drug delivery, active targeting and therapy on cancer cells, as well as biosensing of metal ions into a single platform.
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Affiliation(s)
- Xin Yi Wong
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, 43500, Semenyih, Selangor, Malaysia
| | - Daniel Quesada-González
- Paperdrop Diagnostics, Av. de Can Domènech S/n, Eureka Building, Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Sivakumar Manickam
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, 43500, Semenyih, Selangor, Malaysia; Nanotechnology Research Group, Centre of Nanotechnology and Advanced Materials, University of Nottingham Malaysia, 43500, Semenyih, Selangor, Malaysia; Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam
| | - Kasturi Muthoosamy
- Nanotechnology Research Group, Centre of Nanotechnology and Advanced Materials, University of Nottingham Malaysia, 43500, Semenyih, Selangor, Malaysia.
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27
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Zhang J, Ye S, Zhong K, Zhang Y, Chong Y, Zhao L, Zhou H, Guo S, Zhang G, Jiang B, Mukamel S, Jiang J. A Machine-Learning Protocol for Ultraviolet Protein-Backbone Absorption Spectroscopy under Environmental Fluctuations. J Phys Chem B 2021; 125:6171-6178. [PMID: 34086461 DOI: 10.1021/acs.jpcb.1c03296] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ultraviolet (UV) absorption spectra are commonly used for characterizing the global structure of proteins. However, the theoretical interpretation of UV spectra is hindered by the large number of required expensive ab initio calculations of excited states spanning a huge conformation space. We present a machine-learning (ML) protocol for far-UV (FUV) spectra of proteins, which can predict FUV spectra of proteins with comparable accuracy to density functional theory (DFT) calculations but with 3-4 orders of magnitude reduced computational cost. It further shows excellent predictive power and transferability that can be used to probe structural mutations and protein folding pathways.
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Affiliation(s)
- Jinxiao Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Sheng Ye
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Kai Zhong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yaolong Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yuanyuan Chong
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Luyuan Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Huiting Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Sibei Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Bin Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shaul Mukamel
- Departments of Chemistry and Physics & Astronomy, University of California, Irvine, California 92697, United States
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
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