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Jalan A, Sangeet S, Pradhan AK, Moyon NS. Exploring the interaction of a potent anti-cancer drug Selumetinib with bovine serum albumin: Spectral and computational attributes. J Mol Recognit 2024; 37:e3084. [PMID: 38596890 DOI: 10.1002/jmr.3084] [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: 08/09/2023] [Revised: 03/05/2024] [Accepted: 03/22/2024] [Indexed: 04/11/2024]
Abstract
The binding of drugs to plasma proteins determines its fate within the physiological system, hence profound understanding of its interaction within the bloodstream is important to understand its pharmacodynamics and pharmacokinetics and thereby its therapeutic potential. In this regard, our work delineates the mechanism of interaction of Selumetinib (SEL), a potent anti-cancer drug showing excellent effect against multiple solid tumors, with plasma protein bovine serum albumin (BSA), using methods such as absorption, steady-state fluorescence, time-resolved, fluorescence resonance energy transfer, Fourier transform infrared spectra (FTIR), circular dichroism (CD), synchronous and 3D-fluorescence, salt fluorescence, molecular docking and molecular dynamic simulations. The BSA fluorescence intensity was quenched with increasing concentration of SEL which indicates interactions of SEL with BSA. Stern-Volmer quenching analysis and lifetime studies indicate the involvement of dynamic quenching. However, some contributions from the static quenching mechanism could not be ruled out unambiguously. The association constant was found to be 5.34 × 105 M-1 and it has a single binding site. The Förster distance (r) indicated probable energy transmission between the BSA and SEL. The positive entropy changes and enthalpy change indicate that the main interacting forces are hydrophobic forces, also evidenced by the results of molecular modeling studies. Conformation change in protein framework was revealed from FTIR, synchronous and 3D fluorescence and CD studies. Competitive binding experiments as well as docking studies suggest that SEL attaches itself to site I (subdomain IIA) of BSA where warfarin binds. Molecular dynamic simulations indicate the stability of the SEL-BSA complex. The association energy between BSA and SEL is affected in the presence of different metals differently.
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Affiliation(s)
- Ankita Jalan
- Department of Chemistry, National Institute of Technology Silchar, Silchar, India
| | - Satyam Sangeet
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, India
| | - Amit Kumar Pradhan
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, India
| | - N Shaemningwar Moyon
- Department of Chemistry, National Institute of Technology Silchar, Silchar, India
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Wang Z, Wang X, Xu W, Li Y, Lai R, Qiu X, Chen X, Chen Z, Mi B, Wu M, Wang J. Translational Challenges and Prospective Solutions in the Implementation of Biomimetic Delivery Systems. Pharmaceutics 2023; 15:2623. [PMID: 38004601 PMCID: PMC10674763 DOI: 10.3390/pharmaceutics15112623] [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: 09/25/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Biomimetic delivery systems (BDSs), inspired by the intricate designs of biological systems, have emerged as a groundbreaking paradigm in nanomedicine, offering unparalleled advantages in therapeutic delivery. These systems, encompassing platforms such as liposomes, protein-based nanoparticles, extracellular vesicles, and polysaccharides, are lauded for their targeted delivery, minimized side effects, and enhanced therapeutic outcomes. However, the translation of BDSs from research settings to clinical applications is fraught with challenges, including reproducibility concerns, physiological stability, and rigorous efficacy and safety evaluations. Furthermore, the innovative nature of BDSs demands the reevaluation and evolution of existing regulatory and ethical frameworks. This review provides an overview of BDSs and delves into the multifaceted translational challenges and present emerging solutions, underscored by real-world case studies. Emphasizing the potential of BDSs to redefine healthcare, we advocate for sustained interdisciplinary collaboration and research. As our understanding of biological systems deepens, the future of BDSs in clinical translation appears promising, with a focus on personalized medicine and refined patient-specific delivery systems.
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Affiliation(s)
- Zhe Wang
- Department of Pathology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China; (Z.W.); (R.L.)
| | - Xinpei Wang
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Wanting Xu
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Yongxiao Li
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Ruizhi Lai
- Department of Pathology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China; (Z.W.); (R.L.)
| | - Xiaohui Qiu
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Xu Chen
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Zhidong Chen
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China;
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Meiying Wu
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
| | - Junqing Wang
- School of Pharmaceutical Sciences, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (X.W.); (W.X.); (Y.L.); (X.Q.); (X.C.); (Z.C.)
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Dou J, Dawuti W, Zheng X, Zhu Y, Lin R, Lü G, Zhang Y. Rapid discrimination of Brucellosis in sheep using serum Fourier transform infrared spectroscopy combined with PCA-LDA algorithm. Photodiagnosis Photodyn Ther 2023; 42:103567. [PMID: 37084931 DOI: 10.1016/j.pdpdt.2023.103567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/23/2023]
Abstract
Brucellosis in sheep is an infectious disease caused by Brucella melitensis in sheep. The current conventional serological methods for screening Brucella-infected sheep have the disadvantage of time consuming and low accuracy, so a simple, rapid and highly accurate screening method is needed. The aim of this study was to evaluate the feasibility of diagnosing Brucella-infected sheep by serum samples based on the Fourier transform infrared (FTIR) spectroscopy. In this study, FTIR spectroscopy of serum from Brucella-infected sheep (n=102) and healthy sheep (n=125) revealed abnormal protein and lipid metabolism in serum from Brucella-infected sheep compared to healthy sheep. Principal component analysis-Linear discriminant analysis (PCA-LDA) method was used to differentiate the FTIR spectra of serum from Brucella-infected sheep and healthy sheep in the protein band (3700-3090 cm-1) and lipid band (3000-2800 cm-1), and its overall diagnostic accuracy was 100% (sensitivity 100%, specificity 100%). In conclusion, our results suggest that serum FTIR spectroscopy combined with PCA-LDA algorithm has great potential for brucellosis in sheep screening.
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Affiliation(s)
- Jingrui Dou
- School of Public Health, Xinjiang Medical University, Urumqi 830054, China; State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Wubulitalifu Dawuti
- School of Public Health, Xinjiang Medical University, Urumqi 830054, China; State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Xiangxiang Zheng
- School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - Yousen Zhu
- Clinical Laboratory, The First Affiliated Hospital of Xinjiang Medical University, Urumqi Xinjiang 830054, China
| | - Renyong Lin
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Guodong Lü
- School of Public Health, Xinjiang Medical University, Urumqi 830054, China; State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China.
| | - Yujiang Zhang
- School of Public Health, Xinjiang Medical University, Urumqi 830054, China; The Center for Disease Control and Prevention of Xinjiang Uygur Autonomous Region, Urumqi 830002, China.
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Wang PY, Yang CT, Chu LK. Differentiating the protein dynamics using fluorescence evolution of tryptophan residue(s): A comparative study of bovine and human serum albumins upon temperature jump. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peng HT, Beckett A. Stability of Reconstituted Fibrinogen Concentrate in Hemostatic Function and Concentration. Mil Med 2021; 186:286-292. [PMID: 33196820 DOI: 10.1093/milmed/usaa409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/04/2020] [Accepted: 10/16/2020] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Canadian Armed Forces adopted fibrinogen concentrate (RiaSTAP) for hemostatic resuscitation in the far-forward combat setting, given its potential benefits of reducing blood loss, blood transfusion and mortality, and its long storage stability and high portability. The current guidance recommends that RiaSTAP should be administered within 8 hours after reconstitution when stored at room temperature. However, little information about its stability is available. There is also a need to investigate the stability and efficacy of RiaSTAP after reconstitution and exposure to extreme temperatures in which our forces may operate. MATERIALS AND METHODS RiaSTAP was reconstituted as per manufacturer's instruction and stored at specific temperatures (-20°C, 4°C, 22°C, 35°C, 42°C, or 50°C) for up to 6 months. Reconstituted RiaSTAP was also oscillated on a rocker at 18 rpm under 22°C and 50°C. Its hemostatic function was measured using rotational thromboelastometry performed with RiaSTAP-spiked whole blood. Fibrinogen concentrations were measured by a commercial enzyme-linked immunosorbent assay (ELISA) kit. Gel electrophoresis was also conducted for initial and stored samples. RESULTS We found no change to the hemostatic function of reconstituted RiaSTAP after storage at -20°C for 6 months. At 4°C, no obvious changes to the hemostatic effect of reconstituted RiaSTAP relative to 0 hours were seen until 1,680 hours. At 22°C, a remarkable decrease began after storage for 168 hours. Storage at 35°C significantly decreased the hemostatic effect after 144 hours, while the storage at 42°C resulted in decreased hemostatic function after 72 hours. Finally, storage at 50°C for 8 hours resulted in complete loss of hemostatic function. Compared to the hemostatic activity, the fibrinogen concentration for reconstituted RiaSTAP showed less change over time. No apparent decline in fibrinogen concentration was seen after storage at -20°C for 6 months and at 4°C for 1,680 hours. At 22°C, there were no clear alterations until 792 hours. There was a decline in fibrinogen concentration at 35°C and 42°C after 672 and 600 hours of storage, respectively. At 50°C, little amount of fibrinogen was detected by ELISA at 8 hours. Similar changes in the hemostatic effect and fibrinogen concentration over time were observed under the rocking condition in comparison with the static condition at the same temperature. The gel electrophoresis confirmed fibrinogen degradation which increased with storage temperature and time. CONCLUSIONS The stability of reconstituted RiaSTAP decreases with increasing storage temperature. The hemostatic function deteriorated before fibrinogen concentration and integrity were significantly altered at all temperatures for the study period except at 50°C where there was a rapid decline in both hemostatic function and fibrinogen concentration. Sample oscillation did not significantly affect its stability. The shelf life of reconstituted RiaSTAP may, therefore, be recommended accordingly when stored at different temperatures and extended to 6 days at room temperature provided that sterility is maintained.
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Affiliation(s)
- Henry T Peng
- Defence Research and Development Canada, Toronto Research Centre, Ontario, M3K 2C9, Canada
| | - Andrew Beckett
- The Department of National Defence, McGill University, Montreal, Quebec H3Z 2G5, Canada.,The Department of National Defence, Royal Canadian Medical Services, Ottawa K1A 0K2, Canada
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Lebedeva NS, Yurina ES, Gubarev YA, Koifman OI. Molecular mechanisms causing albumin aggregation. The main role of the porphyrins of the blood group. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118975. [PMID: 33017788 DOI: 10.1016/j.saa.2020.118975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/30/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
In this paper was studied the interaction of deutero- and hematoporphyrin with bovine serum albumin, using various methods of physico-chemical analysis. It was established that the localization of porphyrins occurred in the IB subdomain, while hematoporphyrin interacted with the protein in a monomeric form, and deuteroporphyrin - as a J-dimer. Based on spectral studies, the affinity constants of binding albumin with porphyrins were determined, and the affinity of the protein for deuteroporphyrin appeared to be higher than for hematoporphyrin. It was shown that the interaction of albumin with the studied porphyrins led to a change in the secondary structure of the protein, it being accompanied by a decrease in the proportion of disordered protein fragments and an increase in β-folding.
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Affiliation(s)
- Natalia Sh Lebedeva
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Elena S Yurina
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Yury A Gubarev
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia.
| | - Oskar I Koifman
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia; Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia
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Shi X, Perry HL, Wilton-Ely JDET. Strategies for the functionalisation of gold nanorods to reduce toxicity and aid clinical translation. Nanotheranostics 2021; 5:155-165. [PMID: 33564615 PMCID: PMC7868005 DOI: 10.7150/ntno.56432] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 12/22/2020] [Indexed: 12/31/2022] Open
Abstract
Gold nanorods (GNRs) show great promise as photothermal therapy agents due to their remarkable ability to convert light into heat. In most cases, gold nanorods are synthesised via a seed-mediated method assisted by surfactants. However, the toxicity of these surfactants, principally cetrimonium ions, has prevented GNRs from being used more widely in vivo. To address this issue, various detoxification and functionalisation approaches have been proposed in recent years to replace or cover surfactant coatings on the gold surface. In this short review, the advantages and limitations of each approach are examined in the context of the recent progress made towards the design of GNRs suitable for use in the body.
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Affiliation(s)
- Xin Shi
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, United Kingdom
| | - Hannah L Perry
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, United Kingdom
| | - James D E T Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, United Kingdom
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Understanding the thermal stability of human serum proteins with the related near-infrared spectral variables selected by Monte Carlo-uninformative variable elimination. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.03.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Naldi M, Baldassarre M, Domenicali M, Bartolini M, Caraceni P. Structural and functional integrity of human serum albumin: Analytical approaches and clinical relevance in patients with liver cirrhosis. J Pharm Biomed Anal 2017; 144:138-153. [PMID: 28465079 DOI: 10.1016/j.jpba.2017.04.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/04/2017] [Accepted: 04/15/2017] [Indexed: 02/08/2023]
Abstract
Human serum albumin (HSA) is the most abundant circulating plasma protein. Besides a significant contribution to the osmotic pressure, it is also involved in the fine regulation of many other physiological processes, including the balance of the redox state, the inflammatory and/or immunological responses, and the pharmacokinetic and pharmacodynamics of many drugs. Growing evidence suggests that HSA undergoes structural and functional damage in diseases characterized by an enhanced systemic inflammatory response and oxidative stress, as it occurs in chronic liver disease. Based on their clinical relevance, this review provides a summary of the most common post-translational modifications affecting HSA structural integrity and functions and their clinical relevance in the field of liver disease. The review also provides a critical description of the analytical approaches employed for the investigation of conformational alterations and the identification/quantitation of specific post-translational modifications affecting HSA. Finally, the analytical methods available for the assessment of two of the most clinically relevant non-oncotic properties of HSA, namely the binding capacity and the antioxidant activity, are critically reviewed. Among the available techniques particular attention is given to those proposed for the in vitro and in vivo investigation of structurally modified albumin.
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Affiliation(s)
- Marina Naldi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Via Belmeloro 6, 40126, Italy; Center for Applied Biomedical Research (C.R.B.A.), S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy
| | - Maurizio Baldassarre
- Center for Applied Biomedical Research (C.R.B.A.), S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy; Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, Via Massarenti 9, 40138, Italy
| | - Marco Domenicali
- Center for Applied Biomedical Research (C.R.B.A.), S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy; Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, Via Massarenti 9, 40138, Italy
| | - Manuela Bartolini
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Via Belmeloro 6, 40126, Italy
| | - Paolo Caraceni
- Center for Applied Biomedical Research (C.R.B.A.), S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy; Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, Via Massarenti 9, 40138, Italy.
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Fan M, Cai W, Shao X. Investigating the Structural Change in Protein Aqueous Solution Using Temperature-Dependent Near-Infrared Spectroscopy and Continuous Wavelet Transform. APPLIED SPECTROSCOPY 2017; 71:472-479. [PMID: 27650983 DOI: 10.1177/0003702816664103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The circulatory protein, human serum albumin (HSA), is widely used as a model protein for the study of protein structure. In this work, the structures of human serum albumin in aqueous solutions are studied using temperature-dependent near-infrared (NIR) spectroscopy with the aid of continuous wavelet transform (CWT). Near-infrared spectra of human serum albumin solutions with different concentrations were measured over a temperature range of 30-85 ℃. Then, continuous wavelet transform was performed on the spectra to enhance the resolution. As a result of the resolution enhancement, spectral bands around 4361, 4521, 4600 and 4260 cm-1 were extracted from the overlapping low-resolution signals. The four bands can be assigned to the protein structures of α-helix, β-sheet, an intermediate state and side chains, respectively. The variations in intensity of the bands around 4361 and 4521 cm-1 with temperature show that the increase of temperature leads to the loss of α-helical structure but the formation of β-sheet, and the denaturation temperature of human serum albumin is about 55 ℃. The variation of the band around 4600 cm-1 indicates that the temperature-induced unfolding process of human serum albumin occurs through a stable intermediate state, and a significant change in the microenvironment of the side chains about 63 ℃ is observed from the variation of the band around 4260 cm-1. On the other hand, the transformed spectra in the region of 8000-5600 cm-1 provide an explicit evidence for the structural changes of water during the process of protein denaturation, and the unfolding process of HSA can be reflected by these changes.
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Affiliation(s)
- Mengli Fan
- 1 Research Center for Analytical Sciences, Nankai University, China
| | - Wensheng Cai
- 1 Research Center for Analytical Sciences, Nankai University, China
| | - Xueguang Shao
- 1 Research Center for Analytical Sciences, Nankai University, China
- 2 Tianjin Key Laboratory of Biosensing and Molecular Recognition, China
- 3 State Key Laboratory of Medicinal Chemical Biology, China
- 4 Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), China
- 5 College of Chemistry and Environmental Science, Kashgar University, China
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Lebedeva NS, Gubarev YA, Koifman OI. Interaction between albumin and zinc tetra-4-[(4’ -carboxy)phenylamino]phthalocyanine. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.07.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rogozea A, Matei I, Turcu IM, Ionita G, Sahini VE, Salifoglou A. EPR and circular dichroism solution studies on the interactions of bovine serum albumin with ionic surfactants and β-cyclodextrin. J Phys Chem B 2012; 116:14245-53. [PMID: 23163315 DOI: 10.1021/jp308650r] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interactions of bovine serum albumin (BSA) with ionic surfactants (sodium dodecyl sulfate, SDS, and cetyltrimethylammonium bromide, CTAB) and β-cyclodextrin (β-CD) have been investigated by electron paramagnetic resonance (EPR) and circular dichroism measurements. The spin probe selected to report on the interaction of albumin with surfactants and/or β-CD was 4-N,N-dimethyl hexadecyl ammonium-2,2,6,6-tetramethylpiperidine-1-oxyl iodide (CAT16), on account of (a) its balance between electrostatic and hydrophobic character and (b) the ability of BSA to form complexes with various organic molecules. The distribution of the spin probe among different environments in solutions containing only BSA was confirmed by the existence of two components in the EPR spectra: one revealing a restricted mobility of the spin probe, attributed to the protein-spin probe complex, and another one showing free movement, attributed to the spin probe in solution. The presence of surfactants and/or β-CD alters the distribution of CAT16 between various compartments in each system. Formation of protein aggregates as a result of thermal denaturation was evidenced by the appearance of an immobilized component in the EPR spectrum. This component is not present in the EPR spectra of CAT16 in protein/surfactant or protein/cyclodextrin solutions. Circular dichroism spectra of BSA provided information about changes in the secondary structure of the protein induced by the presence of surfactants and/or cyclodextrin in solution. The results demonstrate that β-CD hinders the interaction between the employed surfactants and the protein. The cationic surfactant (CTAB) induces changes in protein conformation at a lower concentration compared to the anionic surfactant (SDS).
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Affiliation(s)
- Adina Rogozea
- Ilie Murgulescu Institute of Physical Chemistry of the Romanian Academy, 202 Splaiul Independentei, Bucharest 060021, Romania
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High-dose monoclonal antibodies via the subcutaneous route: challenges and technical solutions, an industry perspective. Ther Deliv 2012; 3:889-900. [DOI: 10.4155/tde.12.68] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This review summarizes the various challenges in product development involved in subcutaneous administration of high-dose monoclonal antibodies and attempts to provide an industry perspective of some of the available technologies and potential avenues to overcome these challenges.
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14
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Evidence of changes in hydrophilic/hydrophobic balance and in chemical activity of HSA induced by thermal treatments. OPEN CHEM 2011. [DOI: 10.2478/s11532-010-0148-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AbstractSamples of human serum albumin (HSA) obtained as a result of heat denaturation followed by refolding controlled by a cooling of the protein solution were studied by several methods: chromatographic measurements, kinetic of the reaction with a water soluble free radical and by electron paramagnetic resonance (EPR) spectroscopy. In this context the interaction of this protein with β-cyclodextrin (β-CD) and sodium dodecyl sulfate (SDS) was also investigated. Reversed phase thin layer chromatography (RP-TLC) showed changes in lipophylicity of HSA, which are related with the existence of different ensembles of conformers. The UV-Vis absorption spectra had shown the broadening of absorption band of the protein and a hyperchrom effect in the presence of SDS; β-CD reduces the effect of SDS on protein UV-Vis spectra.Kinetic measurements related to the reaction of HSA with a water soluble DPPH type free radical provided evidence that reactivity of the HSA denaturated conformers is higher compared with the natural conformer. The affinity of SDS to the albumins surface and the effect of β-CD on the SDS/protein aggregates were also evident by changes in the EPR spectra of the spin probe CAT16.
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15
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Sánchez-González I, Rodríguez-Casado A, Careche M, Carmona P. Raman analysis of surimi gelation by addition of wheat dietary fibre. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.05.054] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hu X, Kaplan D, Cebe P. Dynamic Protein−Water Relationships during β-Sheet Formation. Macromolecules 2008. [DOI: 10.1021/ma071551d] [Citation(s) in RCA: 226] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiao Hu
- Department of Physics and Astronomy and Departments of Biomedical Engineering and Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155
| | - David Kaplan
- Department of Physics and Astronomy and Departments of Biomedical Engineering and Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155
| | - Peggy Cebe
- Department of Physics and Astronomy and Departments of Biomedical Engineering and Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155
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Maiti TK, Ghosh KS, Samanta A, Dasgupta S. The interaction of silibinin with human serum albumin: A spectroscopic investigation. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.08.028] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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The Use of Aqueous Urea as Chemical Denaturant in Processing CGM into a Biodegradable Polymer Material. ACTA ACUST UNITED AC 2007. [DOI: 10.4028/www.scientific.net/amr.29-30.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Corn gluten meal (CGM) has potential as a bioderived polymer for use in composite
materials. Previous work to improve the processability of CGM has focused on the use of
plasticisers including water, polyethylene glycol, glycerol and octanoic acid, however, a common
problem is that these leach from the material subsequent to processing [1]. It has been raised that a
certain degree of denaturation must occur in order to make proteins processable [2]. The current
work explores the use of aqueous urea as chemical denaturant in processing CGM into a
biodegradable polymer material. Consolidated materials were obtained which showed increased
resistance to cracking with higher urea concentration. FTIR analysis revealed that processing CGM
with increased concentrations of aqueous urea resulted in the progressive transformation of the
protein secondary structure from an ordered, clustered conformation to that of extended chains.
Aqueous urea is assumed to promote protein-solvent interactions which stabilise the extended chain
conformations.
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Wang SL, Lin JM. Photophysics and applications in biosensor for 4′-N,N-dimethylamino-2-trans-styryl-(6-chloroquinoline). Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.06.122] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hawe A, Friess W. Development of HSA-free formulations for a hydrophobic cytokine with improved stability. Eur J Pharm Biopharm 2007; 68:169-82. [PMID: 17574398 DOI: 10.1016/j.ejpb.2007.04.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2007] [Revised: 04/26/2007] [Accepted: 04/26/2007] [Indexed: 10/23/2022]
Abstract
The goal was to characterize a hydrophobic cytokine with respect to oxidation and aggregation, as well as its adsorption to the container at different pH and ionic strength conditions. The tendency of the cytokine to adsorb on surfaces and its low solubility at physiological pH were the main challenges during the development of HSA-free formulations for the cytokine. When the formulation pH exceeded 5.5 precipitation led to significantly higher turbidity. This turbidity increase and elevated aggregation as determined by HP-SEC and DLS was more pronounced at higher glycine and NaCl concentrations. With rising pH protein adsorption was more distinct compared to pH 3.0. However, protein adsorption could be minimized by polysorbate 20 or the use of glass type I(+). FTIR revealed a reduced thermal stability at higher pH values indicated by a declining denaturation temperature. Five liquid formulations in the pH range 3.5-4.5 and five lyophilized formulations at pH 4.0-5.0 were stored for 6 months and the stability was evaluated with respect to aggregation and chemical modification. Liquid formulations at pH 3.5-4.0 and lyophilized formulations at pH 4.0-5.0 were most stable during 6 months at 2-8 degrees C.
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Affiliation(s)
- Andrea Hawe
- Ludwig-Maximilians-University Munich, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Munich, Germany.
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A DSC study of zinc binding to bovine serum albumin (BSA). JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2007. [DOI: 10.2298/jsc0704331o] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The thermal denaturation of bovine serum albumin (BSA) is a kinetically and thermodynamically controlled process. The effects of zinc binding to bovine serum albumin (BSA), followed by differential scanning calorimetry (DSC), were investigated in this work, with the purpose of obtaining a better understanding of the albumin/zinc interaction. From the DSC curves, the thermodynamic parameters of protein denaturation were obtained, i.e., the temperature of thermal transition maximum (T m), calorimetric enthalpy (?Hcal), van't Hoff enthalpy (?HvH), the number of binding sites (I, II), the binding constants for each binding site (K bI, K bII) and the average number of ligands bound per mole of native protein X N. The thermodynamic data of protein unfolding showed that zinc binding to bovine serum albumin increases the stability of the protein (higher values of ?Hcal) and the different ratio ?Hcal/?HvH indicates the perturbation of the protein during thermal denaturation.
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Hawe A, Friess W. Physico-chemical lyophilization behavior of mannitol, human serum albumin formulations. Eur J Pharm Sci 2006; 28:224-32. [PMID: 16580820 DOI: 10.1016/j.ejps.2006.02.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2005] [Revised: 02/14/2006] [Accepted: 02/18/2006] [Indexed: 11/26/2022]
Abstract
The lyophilization behavior is influenced by the presence of salts. The impact of NaCl on drying-time and the morphology after lyophilization was studied for formulations with mannitol and HSA, using different freezing-protocols. The drying-process was monitored by thermocouples and microbalance technique. Karl-Fischer titration, DSC, XRD, SEM and turbiditimetry and HP-SEC were used to study the products after lyophilization and 6 months storage at 2-8 degrees C, 25 degrees C/60% RH and 40 degrees C/75% RH. NaCl decreases the drying-time of mannitol-HSA formulations, indicating morphological changes, which was confirmed by XRD and SEM. Without NaCl exclusively delta-mannitol is formed, which remains physico-chemically stable upon storage for 6 months. With increasing NaCl concentrations more beta-mannitol and finally amorphous products are formed, whereby the freezing-protocol determines how much NaCl is needed to achieve an amorphous product. Upon storage, the amorphous state cannot be preserved and mannitol and NaCl crystallize, which can damage proteins in the formulations. However, regarding the stability of HSA in the lyophilized products, monitored by turbidimetry and HP-SEC, the addition of NaCl can prevent increases in turbidity upon storage. Here the benefit of NaCl on HSA stability outbalances the potential drawbacks that morphological changes, like crystallization impose on protein stability in the lyophilized products.
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Affiliation(s)
- Andrea Hawe
- Ludwig-Maximilians-University Munich, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Butenandtstr. 5-13, House B, 81377 Munich, Germany.
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