1
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Costa-Tuna A, Chaves OA, Loureiro RJS, Pinto S, Pina J, Serpa C. Interaction between a water-soluble anionic porphyrin and human serum albumin unexpectedly stimulates the aggregation of the photosensitizer at the surface of the albumin. Int J Biol Macromol 2024; 255:128210. [PMID: 37992936 DOI: 10.1016/j.ijbiomac.2023.128210] [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: 08/26/2023] [Revised: 11/02/2023] [Accepted: 11/15/2023] [Indexed: 11/24/2023]
Abstract
The 5,10,15,20-tetrakis(2,6-difluoro-3-sulfophenyl)porphyrin (TDFPPS4) was reported as a potential photosensitizer for photodynamic therapy. The capacity of the photosensitizers to be carried in the human bloodstream is predominantly determined by its extension of binding, binding location, and binding mechanism to human serum albumin (HSA), influencing its biodistribution and ultimately its photodynamic therapy efficacy in vivo. Thus, the present work reports a biophysical characterization on the interaction between the anionic porphyrin TDFPPS4 and HSA by UV-visible absorption, circular dichroism, steady-state, time-resolved, and synchronous fluorescence techniques under physiological conditions, combined with molecular docking calculations and molecular dynamics simulations. The interaction HSA:TDFPPS4 is spontaneous (ΔG° < 0), strong, and enthalpically driven (ΔH° = -70.1 ± 3.3 kJ mol-1) into subdomain IIA (site I). Curiously, despite the porphyrin binding into an internal pocket, about 50 % of TDFPPS4 structure is still accessible to the solvent, making aggregation in the bloodstream possible. In silico calculations were reinforced by spectroscopic data indicating porphyrin aggregation between bound and unbound porphyrins. This results in an adverse scenario for anionic porphyrins to achieve their therapeutical potential as photosensitizers and control of effective dosages. Finally, a trend of anionic porphyrins to have a combination of quenching mechanisms (static and dynamic) was noticed.
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Affiliation(s)
- Andreia Costa-Tuna
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Otávio A Chaves
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal.
| | - Rui J S Loureiro
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Sara Pinto
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - João Pina
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Carlos Serpa
- CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal.
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2
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Shafreen RMB, Lakshmi SA, Pandian SK, Park YS, Kim YM, Paśko P, Deutsch J, Katrich E, Gorinstein S. Unraveling the Antioxidant, Binding and Health-Protecting Properties of Phenolic Compounds of Beers with Main Human Serum Proteins: In Vitro and In Silico Approaches. Molecules 2020; 25:E4962. [PMID: 33120936 PMCID: PMC7663678 DOI: 10.3390/molecules25214962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 12/17/2022] Open
Abstract
Our recently published in vivo studies and growing evidence suggest that moderate consumption of beer possesses several health benefits, including antioxidant and cardiovascular effects. Although beer contains phenolic acids and flavonoids as the major composition, and upon consumption, the levels of major components increase in the blood, there is no report on how these beer components interact with main human serum proteins. Thus, to address the interaction potential between beer components and human serum proteins, the present study primarily aims to investigate the components of beer from different industrial sources as well as their mode of interaction through in silico analysis. The contents of the bioactive compounds, antioxidant capacities and their influence on binding properties of the main serum proteins in human metabolism (human serum albumin (HSA), plasma circulation fibrinogen (PCF), C-reactive protein (CRP) and glutathione peroxidase 3 (GPX3)) were studied. In vitro and in silico studies indicated that phenolic substances presented in beer interact with the key regions of the proteins to enhance their antioxidant and health properties. We hypothesize that moderate consumption of beer could be beneficial for patients suffering from coronary artery disease (CAD) and other health advantages by regulating the serum proteins.
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Affiliation(s)
- Raja Mohamed Beema Shafreen
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630003, India; (R.M.B.S.); (S.A.L.); (S.K.P.)
| | - Selvaraj Alagu Lakshmi
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630003, India; (R.M.B.S.); (S.A.L.); (S.K.P.)
| | - Shunmugiah Karutha Pandian
- Department of Biotechnology, Alagappa University, Science Campus, Karaikudi, Tamil Nadu 630003, India; (R.M.B.S.); (S.A.L.); (S.K.P.)
| | - Yong Seo Park
- Department of Horticultural Science, Mokpo National University, Muan, Jeonnam 534-729, Korea;
| | - Young Mo Kim
- Department of Food Nutrition, Gwangju Health University, Gwangsan-gu, Gwangju 506-723, Korea;
| | - Paweł Paśko
- Department of Food Chemistry and Nutrition, Jagiellonian University Medical College, Krakow 30-688, Poland;
| | - Joseph Deutsch
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (E.K.)
| | - Elena Katrich
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (E.K.)
| | - Shela Gorinstein
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (J.D.); (E.K.)
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3
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Park C, Meghani N, Loebenberg R, Cui JH, Cao QR, Lee BJ. Fatty acid chain length impacts nanonizing capacity of albumin-fatty acid nanomicelles: Enhanced physicochemical property and cellular delivery of poorly water-soluble drug. Eur J Pharm Biopharm 2020; 152:257-269. [PMID: 32422167 DOI: 10.1016/j.ejpb.2020.05.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 05/13/2020] [Indexed: 12/11/2022]
Abstract
This study aimed to design the ideal nanonizing vehicle for poorly water-soluble model curcumin (CCM) using fattigation-platform nanotechnology, and to investigate the effects of fatty acid salts chain length on nanonizing CCM and its efficient delivery to different cancer cells. HSA-fatty acid conjugates were synthesized by EDC/NHS coupling. Fattigation-platform nanomicelles (NMs), prepared by film hydration, exhibited uniform and spherical morphology, although, each NM varied in particle size, zeta potential, and critical micelle concentration according to the types of fatty acid. Preliminary solubility studies of albumin conjugates with 5 types of fatty acid salts of different chain lengths revealed that C14 exhibited the highest solubilization of CCM. CCM-loaded HSA-C14 NMs demonstrated the highest drug content (5.35 ± 0.48%) and loading efficiency (95.93 ± 1.87%) compared to other NMs. It exhibited enhanced drug release rate and reduced micelle size in biorelevant dissolution medium. Interestingly, this solubilization approach was well applied in poorly water-soluble docetaxel trihydrate (DTX). Preliminary solubility results of DTX was also corresponded to the stable nanonization phenomenon in biorelevant dissolution medium. Compared to the CCM EtOH solution, HSA-C14 NMs showed higher internalization in cancer cell lines A549 and MCF-7, and consequently, exhibited significantly increased cytotoxicity against both cell lines. Therefore, this study provides a new solubilization approach for poorly water-soluble drugs using fatty acid salts of different chain lengths and their micellar formations via nanonization, which could be a promising tool for targeted cancer therapy using poorly water-soluble drugs.
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Affiliation(s)
- Chulhun Park
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada.
| | | | - Raimar Loebenberg
- Faculty of Pharmacy & Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada.
| | - Jing-Hao Cui
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, China.
| | - Qing-Ri Cao
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, China.
| | - Beom-Jin Lee
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; Institute of Pharmaceutical Science and Technology, Ajou University, Suwon 16499, Republic of Korea.
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4
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Pounsamy M, Somasundaram S, Palanivel S, Balasubramani R, Chang SW, Nguyen DD, Ganesan S. A novel protease-immobilized carbon catalyst for the effective fragmentation of proteins in high-TDS wastewater generated in tanneries: Spectral and electrochemical studies. ENVIRONMENTAL RESEARCH 2019; 172:408-419. [PMID: 30826663 DOI: 10.1016/j.envres.2019.01.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to degrade proteins in high-total dissolved solids (TDS)-containing wastewater produced during the soaking process in tanneries (tannery-TDS wastewater) using a halotolerant protease-assisted nanoporous carbon catalyst (STPNPAC). A halotolerant protease was obtained from the halophile, Lysinibacillus macroides, using animal fleshing as the substrate. The protease was immobilized using ethylene diamine (EDA)/glutaraldehyde functionalized nanoporous activated carbon (EGNPAC). The optimum conditions for the immobilization of protease were determined as time (120 min), pH (6), protease concentration (575-600 U/g), EGNPAC size, salinity, and temperature (30 °C). The immobilization was confirmed by FTIR, TGA-DSC, SEM, and XRD analyses. The adsorption kinetics was consistent with a pseudo first order rate constant of 1.43 × 10-2 min-1. The thermodynamic parameters (ΔG, ΔH, and ΔS) confirmed the effective immobilization of the protease onto EGNPAC. STPNAPC was found to efficiently degrade the proteins in tannery-TDS wastewater, with a complete fragmentation time of 90 min at pH 6 and 30 °C. Accordingly, the protein fragmentation was confirmed by UV-visible and UV-fluorescence spectroscopy, ESI-mass spectrometric analysis and circular dichroic studies. The formation of protein hydrolysates was confirmed by cyclic voltammetry and electrical impedance studies. BOD5: COD value, 0.426 of treated tannery-TDS wastewater may favor sequential biological treatment processes.
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Affiliation(s)
- Maharaja Pounsamy
- Advanced Materials Laboratory, Council of Scientific & Industrial Research (CSIR) Central Leather Research Institute (CLRI), Adyar, Chennai 600 020, Tamilnadu, India; Environmental Science and Engineering Division, Council of Scientific & Industrial Research (CSIR) Central Leather Research Institute (CLRI), Adyar, Chennai 600 020, Tamilnadu, India
| | - Swarnalatha Somasundaram
- Environmental Science and Engineering Division, Council of Scientific & Industrial Research (CSIR) Central Leather Research Institute (CLRI), Adyar, Chennai 600 020, Tamilnadu, India
| | - Saravanan Palanivel
- Leather Process Technology Laboratory, Council of Scientific & Industrial Research (CSIR) Central Leather Research Institute (CLRI), Adyar, Chennai 600 020, Tamilnadu, India
| | - Ravindran Balasubramani
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do 16227, South Korea.
| | - Soon Woong Chang
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do 16227, South Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do 16227, South Korea; Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
| | - Sekaran Ganesan
- Environmental Science and Engineering Division, Council of Scientific & Industrial Research (CSIR) Central Leather Research Institute (CLRI), Adyar, Chennai 600 020, Tamilnadu, India.
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5
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Wesełucha-Birczyńska A, Morajka K, Stodolak-Zych E, Długoń E, Dużyja M, Lis T, Gubernat M, Ziąbka M, Błażewicz M. Raman studies of the interactions of fibrous carbon nanomaterials with albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:262-267. [PMID: 29455077 DOI: 10.1016/j.saa.2018.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 01/26/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Adsorption or immobilization of proteins on synthetic surfaces is a key issue in the context of the biocompatibility of implant materials, especially those intended for the needs of cardiac surgery but also for the construction of biosensors or nanomaterials used as drug carriers. The subject of research was the analysis of Raman spectra of two types of fibrous carbon nanomaterials, of great potential for biomedical applications, incubated with human serum albumin (HSA). The first nanomaterial has been created on the layer of MWCNTs deposited by electrophoretic method (EPD) and then covered by thin film of pyrolytic carbon introduced by chemical vapor deposition process (CVD). The second material was formed from carbonized nanofibers prepared via electrospinning (ESCNFs) of polyacrylonitrile (PAN) precursor and then covered with pyrolytic carbon (CVD). The G-band blue-shift towards the position of about 1600cm-1, observed for both studied surfaces, clearly indicates the albumin (HSA) adhesion to the surface. The G and G' (2D) peak shift was employed to assess the stress build up on the carbon nanomaterials. The surface nano- and micro-topography as well as the method of ordering the carbon nanomaterial has a significant influence on the mode of surface-protein interaction.
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Affiliation(s)
| | - Krzysztof Morajka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Ewa Stodolak-Zych
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Elżbieta Długoń
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Maria Dużyja
- Technolutions, Jana Pawła II 52/56, 99-400 Łowicz, Poland
| | - Tomasz Lis
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Maciej Gubernat
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Magdalena Ziąbka
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
| | - Marta Błażewicz
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
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6
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Khan AY, Suresh Kumar G. Exploring the binding interaction of potent anticancer drug topotecan with human serum albumin: spectroscopic, calorimetric and fibrillation study. J Biomol Struct Dyn 2017; 36:2463-2473. [DOI: 10.1080/07391102.2017.1359671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Asma Yasmeen Khan
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
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7
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Sekar G, Wilson S, Sivakumar A, Mukherjee A, Chandrasekaran N. Elucidating the role of surfactant dispersed CNTs towards HSA fibrillation in vitro — A multiple spectroscopic approach. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.06.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Sekar G, Sivakumar A, Mukherjee A, Chandrasekaran N. Prion like behavior of HSA-hydroxylated MWCNT interface. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2016; 161:411-421. [PMID: 27314539 DOI: 10.1016/j.jphotobiol.2016.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
Carbon nanotubes (CNTs) with unique and outstanding properties were expected to revolutionize various aspects of the biomedical sector. Interaction studies of proteins with functionalized CNTs would shed light on their toxicological aspects upon entering the human body. Hyperchromicity of the UV-Visible spectra and declining fluorescence potential of HSA on interaction with CNTs suggested ground state complex to exist between them. Synchronous and 3D spectral features of CNT-HSA system proposed their possible binding site to occur nearby Trp and Tyr residues. FTIR and FT-Raman spectra showed a shift in the amide band region that proportionate the possible alteration to occur in the alpha-helical structures. CD far and near spectra showed loss of alpha-helical structures and shift in the Trp position of the polypeptide backbone. CNT's UV and FTIR band showed shift on interaction with HSA, which conveys the possible aggregation of CNTs in the presence of protein. The promoting role of CNTs against HSA fibril formation has been confirmed by spectroscopic and microscopic evaluations. Secondary conformational changes, besides the existence of increased beta-sheet structures of HSA amyloid fibrils, remain similar to the amyloid behavior of Prion protein. Hence, HSA fibril-CNT interface predominates the possible mechanism for several amyloid-related disorders concerning their toxic accumulations in the body.
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Affiliation(s)
- Gajalakshmi Sekar
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, Tamil Nadu, India
| | - A Sivakumar
- School of Advanced Sciences, VIT University, Vellore, 632014, Tamil Nadu, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, VIT University, Vellore, 632014, Tamil Nadu, India
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9
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Neacsu MV, Matei I, Micutz M, Staicu T, Precupas A, Popa VT, Salifoglou A, Ionita G. Interaction between Albumin and Pluronic F127 Block Copolymer Revealed by Global and Local Physicochemical Profiling. J Phys Chem B 2016; 120:4258-67. [DOI: 10.1021/acs.jpcb.6b02199] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Maria Victoria Neacsu
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
| | - Iulia Matei
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
| | - Marin Micutz
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
- Department
of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, Bucharest 030018, Romania
| | - Teodora Staicu
- Department
of Physical Chemistry, Faculty of Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, Bucharest 030018, Romania
| | - Aurica Precupas
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
| | - Vlad Tudor Popa
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
| | - Athanasios Salifoglou
- Department
of Chemical Engineering, Laboratory of Inorganic Chemistry and Chemistry
of Advanced Materials, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Gabriela Ionita
- “Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul
Independentei, Bucharest 060021, Romania
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10
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Terekhov SS, Bobik TV, Mokrushina YA, Stepanova AV, Aleksandrova NM, Smirnov IV, Belogurov AA, Ponomarenko NA, Gabibov AG. Expression of DNA-Encoded Antidote to Organophosphorus Toxins in the Methylotrophic Yeast Pichia Pastoris. APPL BIOCHEM MICRO+ 2016. [DOI: 10.1134/s0003683816020162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Takahashi T, Terada T, Arikawa H, Kizaki K, Terawaki H, Imai H, Itoh Y, Era S. Quantitation of Oxidative Modifications of Commercial Human Albumin for Clinical Use. Biol Pharm Bull 2016; 39:401-8. [DOI: 10.1248/bpb.b15-00843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Teppei Takahashi
- Department of Physiology & Biophysics, Gifu University Graduate School of Medicine
| | - Tomoyoshi Terada
- Department of Physiology & Biophysics, Gifu University Graduate School of Medicine
| | - Hajime Arikawa
- Department of Early Childhood Education, Chubu-gakuin College
| | - Kazuha Kizaki
- Department of Orthopedic Surgery, Kyoto Shimogamo Hospital
| | | | - Hajime Imai
- Department of Health and Physical Education, Faculty of Education, Gifu University
| | | | - Seiichi Era
- Department of Physiology & Biophysics, Gifu University Graduate School of Medicine
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12
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Huang YJS, Hsu WW, Higgs S, Vanlandingham DL. Temperature Tolerance and Inactivation of Chikungunya Virus. Vector Borne Zoonotic Dis 2015; 15:674-7. [DOI: 10.1089/vbz.2015.1795] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yan-Jang S. Huang
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
- Biosecurity Research Institute, Kansas State University, Manhattan, Kansas
| | - Wei-Wen Hsu
- Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas
| | - Stephen Higgs
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
- Biosecurity Research Institute, Kansas State University, Manhattan, Kansas
| | - Dana L. Vanlandingham
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
- Biosecurity Research Institute, Kansas State University, Manhattan, Kansas
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13
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Sen S, Konar S, Pathak A, Dasgupta S, DasGupta S. Effect of Functionalized Magnetic MnFe2O4 Nanoparticles on Fibrillation of Human Serum Albumin. J Phys Chem B 2014; 118:11667-76. [DOI: 10.1021/jp507902y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shubhatam Sen
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Suraj Konar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Amita Pathak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sunando DasGupta
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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14
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Comparative studies on the heterogeneity of plasma-derived and recombinant human albumins in laboratory use. Int J Biol Macromol 2014; 69:79-87. [DOI: 10.1016/j.ijbiomac.2014.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/01/2014] [Accepted: 05/05/2014] [Indexed: 12/13/2022]
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15
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Pandey NK, Ghosh S, Dasgupta S. Fructose restrains fibrillogenesis in human serum albumin. Int J Biol Macromol 2013; 61:424-32. [DOI: 10.1016/j.ijbiomac.2013.08.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 08/07/2013] [Accepted: 08/08/2013] [Indexed: 11/17/2022]
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16
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Pandey NK, Ghosh S, Nagy NV, Dasgupta S. Fibrillation of human serum albumin shows nonspecific coordination on stoichiometric increment of Copper(II). J Biomol Struct Dyn 2013; 32:1366-78. [DOI: 10.1080/07391102.2013.819300] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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17
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de la Arada I, Seiler C, Mäntele W. Amyloid fibril formation from human and bovine serum albumin followed by quasi-simultaneous Fourier-transform infrared (FT-IR) spectroscopy and static light scattering (SLS). EUROPEAN BIOPHYSICS JOURNAL: EBJ 2012; 41:931-8. [DOI: 10.1007/s00249-012-0845-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 07/20/2012] [Accepted: 07/27/2012] [Indexed: 01/01/2023]
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18
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Goli KK, Rojas OJ, Özçam AE, Genzer J. Generation of Functional Coatings on Hydrophobic Surfaces through Deposition of Denatured Proteins Followed by Grafting from Polymerization. Biomacromolecules 2012; 13:1371-82. [DOI: 10.1021/bm300075u] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kiran K. Goli
- Department of Materials
Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907,
United States
| | - Orlando J. Rojas
- Department of Forest
Biomaterials, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
- Department of Forest
Products Technology, Aalto University, FI-00076 Aalto, Espoo, Finland
| | - A. Evren Özçam
- Department of Chemical
and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905,
United States
| | - Jan Genzer
- Department of Chemical
and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905,
United States
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19
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Lassé M, Gerrard JA, Pearce FG. Aggregation and fibrillogenesis of proteins not associated with disease: a few case studies. Subcell Biochem 2012; 65:253-270. [PMID: 23225007 DOI: 10.1007/978-94-007-5416-4_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
While amyloid structures have been well characterised in a medical context, there is increasing interest in studying amyloid-like aggregates in other areas, such as food science and nanomaterials. Several proteins relevant to food processing, including serum albumen, lactoglobulin, lysozyme, ovalbumin, casein, and soy protein isolate have been shown to form fibrillar structures under both physiological and non-physiological conditions. These structures are likely to contribute to the structural characteristics of the final food product. In a biotechnological context, proteins such as insulin and eye lens crystallins can be induced to form amyloid structures which can subsequently be used in biotechnology. One example of this is the use of amyloid fibrils as a scaffold for the immobilisation of enzymes. Another current interest in amyloid fibrils is as a storage form for peptide hormones, including insulin, glucagon and calcitonin. Here, we give an overview of a selection of well characterised proteins that have been studied outside the context of disease.
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Affiliation(s)
- Moritz Lassé
- Biomolecular Interaction Center and School of Biological Sciences, University of Canterbury, Private Bag 4800, 8020, Christchurch, New Zealand,
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20
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Pandey NK, Ghosh S, Dasgupta S. Fibrillation in human serum albumin is enhanced in the presence of copper(II). J Phys Chem B 2010; 114:10228-33. [PMID: 20684647 DOI: 10.1021/jp103876p] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aggregation process in proteins is governed by several factors such as temperature, pH, presence of electrolytes, denaturants, and metal ions. Here, we report the role of Cu(II) in inducing rapid fibrillation in human serum albumin. We have monitored this process via UV-vis spectroscopy, fluorescence spectroscopy, circular dichroism, zeta-potential measurements, electron paramagnetic resonance studies, fluorescence microscopy, and field emission scanning electron microscopy. Images show a fibrillar network of human serum albumin in the presence of Cu(II) in 60% ethanol incubated at 65 degrees C at physiological pH. All other studies also support the enhanced fibrillation in presence of Cu(II).
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Affiliation(s)
- Nitin K Pandey
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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21
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Juárez J, López SG, Cambón A, Taboada P, Mosquera V. Influence of electrostatic interactions on the fibrillation process of human serum albumin. J Phys Chem B 2009; 113:10521-9. [PMID: 19572666 DOI: 10.1021/jp902224d] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The fibrillation propensity of the multidomain protein human serum albumin (HSA) has been analyzed under physiological and acidic conditions at room and elevated temperatures with varying ionic strengths by different spectroscopic techniques. The kinetics of fibril formation under the different solution conditions and the structures of resulting fibrillar aggregates were also determined. In this way, we have observed that fibril formation is largely affected by electrostatic shielding: at physiological pH, fibrillation is progressively more efficient and faster in the presence of up to 50 mM NaCl; meanwhile, at larger salt concentrations, excessive shielding and further enhancement of the solution hydrophobicity might involve a change in the energy landscape of the aggregation process, which makes the fibrillation process difficult. In contrast, under acidic conditions, a continuous progressive enhancement of HSA fibrillation is observed as the electrolyte concentration in solution increases. Both the distinct ionization and initial structural states of the protein before incubation may be the origin of this behavior. CD, FT-IR, and tryptophan fluorescence spectra seem to confirm this picture by monitoring the structural changes in both protein tertiary and secondary structures along the fibrillation process. On the other hand, the fibrillation of HSA does not show a lag phase except at pH 3.0 in the absence of added salt. Finally, differences in the structure of the intermediates and resulting fibrils under the different conditions are also elucidated by TEM and FT-IR.
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Affiliation(s)
- Josué Juárez
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
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22
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Sorokulova IB, Krumnow AA, Pathirana S, Mandell AJ, Vodyanoy V. Novel methods for storage stability and release of Bacillus spores. Biotechnol Prog 2009; 24:1147-53. [PMID: 19194925 DOI: 10.1002/btpr.22] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Bacillus subtilis spores were immobilized in activated charcoal and tapioca and filled with acacia gum. These formulations were tested for spore stability during storage at temperatures ranging from 40 degrees C to 90 degrees C and for bacterial release. Thermodynamic analysis showed that immobilization of spores in acacia gum significantly increased their viability compared with unprotected spores. The viability was further increased when suspensions of spores in acacia gum were added to granules of charcoal and tapioca. The number of the spores released after storage was also increased when spores were treated with acacia gum prior to immobilization in tapioca and charcoal. Formulations of Bacillus spores with acacia gum and porous carriers (charcoal and tapioca) prolong the anticipated shelf-life of spores even under ambient temperature and provide slow and steady bacterial release consistent with their high viability.
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Affiliation(s)
- Iryna B Sorokulova
- Dept of Anatomy, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
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23
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Zhang HX, Mei P, Yang XX. Optical, structural and thermodynamic properties of the interaction between tradimefon and serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:621-626. [PMID: 19119058 DOI: 10.1016/j.saa.2008.10.062] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2008] [Revised: 10/30/2008] [Accepted: 10/31/2008] [Indexed: 05/27/2023]
Abstract
The biological toxicity of a chloric pesticide, tradimefon to bovine serum albumin (BSA) were studied by fluorescence and absorption spectroscopy. The fluorescence quenching mechanism analysis indicates the quenching of BSA by TDF was caused by BSA-TDF complex formation and electrostatic interaction played major role in the reaction. The number of binding sites n and observed binding constant K(b) was measured by fluorescence quenching method. The thermodynamic parameters DeltaH(theta), DeltaG(theta), DeltaS(theta) at different temperatures were calculated, and the distance r between donor (BSA) and acceptor (TDF) was obtained according to Förster theory of non-radiation energy transfer. Three-dimensional fluorescence spectra, circular dichroism (CD) spectra and synchronous fluorescence spectra were used to investigate the structural change of BSA molecules with addition of TDF and the mechanism of binding reaction was analyzed at molecular level.
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Affiliation(s)
- Hua-Xin Zhang
- College of Chemical and Pharmaceutical Engineering, Jingchu University of Technology, Jingmen, Hubei 448000, People's Republic of China.
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Juárez J, Taboada P, Mosquera V. Existence of different structural intermediates on the fibrillation pathway of human serum albumin. Biophys J 2009; 96:2353-70. [PMID: 19289061 PMCID: PMC2907680 DOI: 10.1016/j.bpj.2008.12.3901] [Citation(s) in RCA: 154] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 11/18/2008] [Accepted: 12/01/2008] [Indexed: 10/21/2022] Open
Abstract
The fibrillation propensity of the multidomain protein human serum albumin (HSA) was analyzed under different solution conditions. The aggregation kinetics, protein conformational changes upon self-assembly, and structure of the different intermediates on the fibrillation pathway were determined by means of thioflavin T (ThT) fluorescence and Congo Red absorbance; far- and near-ultraviolet circular dichroism; tryptophan fluorescence; Fourier transform infrared spectroscopy; x-ray diffraction; and transmission electron, scanning electron, atomic force, and microscopies. HSA fibrillation extends over several days of incubation without the presence of a lag phase, except for HSA samples incubated at acidic pH and room temperature in the absence of electrolyte. The absence of a lag phase occurs if the initial aggregation is a downhill process that does not require a highly organized and unstable nucleus. The fibrillation process is accompanied by a progressive increase in the beta-sheet (up to 26%) and unordered conformation at the expense of alpha-helical conformation, as revealed by ThT fluorescence and circular dichroism and Fourier transform infrared spectroscopies, but changes in the secondary structure contents depend on solution conditions. These changes also involve the presence of different structural intermediates in the aggregation pathway, such as oligomeric clusters (globules), bead-like structures, and ring-shaped aggregates. We suggest that fibril formation may take place through the role of association-competent oligomeric intermediates, resulting in a kinetic pathway via clustering of these oligomeric species to yield protofibrils and then fibrils. The resultant fibrils are elongated but curly, and differ in length depending on solution conditions. Under acidic conditions, circular fibrils are commonly observed if the fibrils are sufficiently flexible and long enough for the ends to find themselves regularly in close proximity to each other. These fibrils can be formed by an antiparallel arrangement of beta-strands forming the beta-sheet structure of the HSA fibrils as the most probable configuration. Very long incubation times lead to a more complex morphological variability of amyloid mature fibrils (i.e., long straight fibrils, flat-ribbon structures, laterally connected fibers, etc.). We also observed that mature straight fibrils can also grow by protein oligomers tending to align within the immediate vicinity of the fibers. This filament + monomers/oligomers scenario is an alternative pathway to the otherwise dominant filament + filament manner of the protein fibril's lateral growth. Conformational preferences for a certain pathway to become active may exist, and the influence of environmental conditions such as pH, temperature, and salt must be considered.
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Affiliation(s)
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
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25
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Sabín J, Prieto G, Ruso JM, Messina PV, Salgado FJ, Nogueira M, Costas M, Sarmiento F. Interactions between DMPC Liposomes and the Serum Blood Proteins HSA and IgG. J Phys Chem B 2009; 113:1655-61. [DOI: 10.1021/jp804641e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Sabín
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Gerardo Prieto
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Juan M. Ruso
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Paula V. Messina
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Francisco J. Salgado
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Montserrat Nogueira
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Miguel Costas
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
| | - Félix Sarmiento
- Grupo de Biofísica e Interfases, Departamento de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; Departamento de Química, Universidad Nacional del Sur, 8000 Bahía Blanca, Argentina; Departamento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain; and Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional
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Saguer E, Fort N, Alvarez P, Sedman J, Ismail A. Structure–functionality relationships of porcine plasma proteins probed by FTIR spectroscopy and texture analysis. Food Hydrocoll 2008. [DOI: 10.1016/j.foodhyd.2007.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Bobik TV, Vorob'ev II, Ponomarenko NA, Gabibov AG, Miroshnikov AI. [Expression of human serum albumin in metylotrophic yeast Pichia pastoris and its structural and functional analysis]. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2008; 34:56-62. [PMID: 18365738 DOI: 10.1134/s1068162008010068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The stable strain of methylotrophic yeast Pichia pastoris secreting human serum albumin into cultural medium was obtained. Optimal conditions for expression of the protein were determined. We characterized the recombinant protein by mass spectrometry and circular dichroism and analyzed its catalytic activity.
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28
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Zhang HX, Huang X, Mei P, Gao S. Interaction between Glyoxal-bis-(2-hydroxyanil) and Bovine Serum Albumin in Solution. J SOLUTION CHEM 2008. [DOI: 10.1007/s10953-008-9268-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Zhang H, Huang X, Zhang M. Spectral diagnostics of the interaction between pyridoxine hydrochloride and bovine serum albumin in vitro. Mol Biol Rep 2007; 35:699-705. [PMID: 17891511 DOI: 10.1007/s11033-007-9143-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2007] [Accepted: 09/06/2007] [Indexed: 11/28/2022]
Abstract
The interaction between pyridoxine hydrochloride (VB6) and bovine serum albumin (BSA) were studied by spectroscopic methods including fluorescence spectroscopy and UV-visible absorption spectra. The quenching mechanism of fluorescence of BSA by VB6 was discussed. The number of binding sites n and observed binding constant K(b) was measured by fluorescence quenching method. The thermodynamic parameters DeltaH(theta), DeltaG(theta), DeltaS(theta) at different temperatures were calculated and the results indicate the binding reaction is mainly entropy-driven and hydrophobic interaction played major role in the reaction. The distance r between donor (BSA) and acceptor (VB6) was obtained according to FOrster theory of non-radiation energy transfer. Synchronous fluorescence and three-dimensional fluorescence spectra were used to investigate the structural change of BSA molecules with addition of VB6, the result indicates that the secondary structure of BSA molecules is changed in the presence of VB6.
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Affiliation(s)
- Huaxin Zhang
- College of Chemical Engineering, Jingchu University of Technology, Jingmen, Hubei, 448000, PR China.
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30
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Lin SY, Wei YS, Li MJ, Wang SL. Effect of ethanol or/and captopril on the secondary structure of human serum albumin before and after protein binding. Eur J Pharm Biopharm 2004; 57:457-64. [PMID: 15093593 DOI: 10.1016/j.ejpb.2004.02.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2003] [Revised: 02/08/2004] [Accepted: 02/10/2004] [Indexed: 11/25/2022]
Abstract
The attenuated total reflection/Fourier transform infrared technique has been utilized to characterize secondary structural changes in human serum albumin (HSA) before and after protein binding via incubation of HSA in different concentrations of ethanol, captopril or ethanol/captopril mixture. The results indicate that ethanol induced a transition from beta-sheet to an alpha-helical structure and promoted conversion of intramolecular hydrogen-bonded beta-sheet to intermolecular hydrogen-bonded beta-sheet. In contrast, captopril or captopril/ethanol mixture induced conversion of intramolecular hydrogen-bonded beta-sheet to intermolecular hydrogen-bonded beta-sheet and resulted in exposure of the aromatic side-chain groups in the unfolding conformation of HSA. Thus, protein binding between HSA and captopril or captopril/ethanol seems to play an important role in protein secondary structure.
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Affiliation(s)
- Shan-Yang Lin
- Department of Medical Research and Education, Veterans General Hospital-Taipei, Taipei, Taiwan, ROC.
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31
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Lin SY, Li MJ, Wei YS. Ethanol or/and captopril-induced precipitation and secondary conformational changes of human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:3107-3111. [PMID: 15477151 DOI: 10.1016/j.saa.2004.03.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2004] [Accepted: 03/01/2004] [Indexed: 05/24/2023]
Abstract
We determined the secondary structure of solid-state native human serum albumin (HSA) and its precipitates induced by ethanol, captopril, or a captopril/ethanol mixture. A transmission Fourier transform infrared (FT-IR) microspectroscopy equipped with a thermal analyzer was used. The secondary structural composition of solid-state native HSA was 54% alpha-helices (1655 cm(-1)), 22% beta-turns (1679 cm(-1)), and 23% beta-sheets (1633 cm(-1)). After ethanol treatment, a new peak was observed at 1690 cm(-1), and the peak at 1633 cm(-1) was more apparent in the HSA precipitates. The corresponding compositions consisted of 59% alpha-helices, 17% beta-turns, and 24% beta-sheets. After treatment with captopril with or without ethanol, the percentage of alpha-helices and beta-turns decreased in both HSA precipitates, but the percentage of beta-sheets increased. The temperature-dependent structural transformation from alpha-helices/random coils to beta-sheets for the solid-state HSA samples occurred at markedly different onset temperatures. The onset temperature for native HSA was 85 degrees C, and that for HSA precipitates obtained from ethanol, captopril, or captopril/ethanol was 100, 48 or 57 degrees C, respectively. The thermal-induced structural transformation from alpha-helices/random coils to beta-sheets implies a partial unfolding structure in these HSA samples.
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Affiliation(s)
- Shan-Yang Lin
- Biopharmaceutics Laboratory, Department of Medical Research and Education, Veterans General Hospital-Taipei, Shih-Pai, Taiwan, ROC.
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Gorinstein S, Caspi A, Zemser M, Libman I, Goshev I, Trakhtenberg S. Plasma circulating fibrinogen stability and moderate beer consumption. J Nutr Biochem 2004; 14:710-6. [PMID: 14690763 DOI: 10.1016/j.jnutbio.2003.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
MODERATE BEER CONSUMPTION (MBC) IS CARDIOPROTECTIVE: it positively influences plasma lipid levels and plasma antioxidant activity in beer-consuming individuals. The connection between MBC and blood coagulation is not clearly defined. Forty-two volunteers were equally divided into experimental (EG) and control (CG) groups following coronary bypass surgery. For 30 consecutive days, only patients of the EG consumed 330 mL of beer per day (about 20 g of alcohol). A comprehensive clinical investigation of 42 patients was done. Blood samples were collected before and after the investigation for a wide range of laboratory tests. The plasma fibrinogen was denatured with 8 M urea and intrinsic fluorescence (IF), hydrophobicity and differential scanning calorimetry (DSC) were used to reveal possible qualitative changes. After 30 days of moderate beer consumption, positive changes in the plasma lipid levels, plasma anticoagulant and plasma antioxidant activities were registered in patients of the EG group. In 17 out of 21 patients of the same group, differences in plasma circulating fibrinogen's (PCF), secondary and tertiary structures were found. The stability of fibrinogen, expressed in thermodynamic parameters, has shown that the loosening of the structure takes place under ethanol and urea denaturation. Also fluorescence stability of PCF was decreased. No changes in the lipid levels, anticoagulant and antioxidant activity or changes in PCF were detected in patients of CG. In conclusion, for the first time after a short term of moderate beer consumption some qualitative changes in the plasma circulating fibrinogen were detected: differences in the emission peak response, fluorescence intensity and all thermodynamic data. Together, with the decrease in the PCF concentration it may lead to an elevation of the blood anticoagulant activity.
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Affiliation(s)
- Shela Gorinstein
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University - Hadassah Medical School, P.O.B. 12065, Jerusalem 91120, Israel.
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Gorinstein S, Caspi A, Goshev I, Aksu S, Salnikow J, Scheler C, Delgado-Licon E, Rosen A, Weisz M, Libman I, Trakhtenberg S. Structural changes in plasma circulating fibrinogen after moderate beer consumption as determined by electrophoresis and spectroscopy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2003; 51:822-827. [PMID: 12537464 DOI: 10.1021/jf0206926] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The effects of short-term moderate beer consumption (MBC) on plasma circulating fibrinogen (PCF) in patients suffering from coronary atherosclerosis were investigated by use of 2-dimensional electrophoresis (2-DE), circular dichroism (CD), and Fourier transform infrared spectroscopy (FT-IR). Forty-eight volunteers after coronary bypass surgery were divided into experimental (EG) and control (CG) groups, each of 24. Patients of the EG group consumed 330 mL of beer/day (about 20 g of alcohol) for 30 consecutive days, and CG volunteers drank mineral water instead of beer. Blood samples were collected before and after the experiment. In 21 out of 24 patients after beer consumption the plasma circulating fibrinogen was compromised: changes in its secondary structure were found. These changes were expressed in relatively low electrophoretic mobility and charge heterogeneity, decrease in alpha-helix and increase in beta-sheet, and in slight shift of amide I and II bands. Our findings indicate that one of the positive benefits of moderate beer consumption is to diminish the production of fibrinogen and its stability, which reduces the potential risk exerted by this protein. Thus, in most of beer-consuming patients some qualitative structural changes in plasma circulating fibrinogen were detected.
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Affiliation(s)
- Shela Gorinstein
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University-Hadassah Medical School, P.O. Box 12065, Jerusalem 91120, Israel.
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