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Araujo ANM, Leroux IN, Furtado DZS, Ferreira APSDS, Batista BL, Silva HDT, Handakas E, Assunção NA, Olympio KPK. Integration of proteomic and metabolomic analyses: New insights for mapping informal workers exposed to potentially toxic elements. Front Public Health 2023; 10:899638. [PMID: 36761330 PMCID: PMC9905639 DOI: 10.3389/fpubh.2022.899638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 12/29/2022] [Indexed: 01/26/2023] Open
Abstract
Occupational exposure to potentially toxic elements (PTEs) is a concerning reality of informal workers engaged in the jewelry production chain that can lead to adverse health effects. In this study, untargeted proteomic and metabolomic analyses were employed to assess the impact of these exposures on informal workers' exposome in Limeira city, São Paulo state, Brazil. PTE levels (Cr, Mn, Ni, Cu, Zn, As, Cd, Sn, Sb, Hg, and Pb) were determined in blood, proteomic analyses were performed for saliva samples (n = 26), and metabolomic analyses in plasma (n = 145) using ultra-high performance liquid chromatography (UHPLC) coupled with quadrupole-time-of-flight (Q-TOF) mass spectrometry. Blood PTE levels of workers, controls, and their family members were determined by inductively coupled plasma-mass spectrometry (ICP-MS). High concentration levels of Sn and Cu were detected in welders' blood (p < 0.001). Statistical analyses were performed using MetaboAnalyst 4.0. The results showed that 26 proteins were upregulated, and 14 proteins downregulated on the welder group, and thirty of these proteins were also correlated with blood Pb, Cu, Sb, and Sn blood levels in the welder group (p < 0.05). Using gene ontology analysis of these 40 proteins revealed the biological processes related to the upregulated proteins were translational initiation, SRP-dependent co-translational protein targeting to membrane, and viral transcription. A Metabolome-Wide Association Study (MWAS) was performed to search for associations between blood metabolites and exposure groups. A pathway enrichment analysis of significant features from the MWAS was then conducted with Mummichog. A total of 73 metabolomic compounds and 40 proteins up or down-regulated in welders were used to perform a multi-omics analysis, disclosing seven metabolic pathways potentially disturbed by the informal work: valine leucine and isoleucine biosynthesis, valine leucine and isoleucine degradation, arginine and proline metabolism, ABC transporters, central carbon metabolism in cancer, arachidonic acid metabolism and cysteine and methionine metabolism. The majority of the proteins found to be statistically up or downregulated in welders also correlated with at least one blood PTE level, providing insights into the biological responses to PTE exposures in the informal work exposure scenario. These findings shed new light on the effects of occupational activity on workers' exposome, underscoring the harmful effects of PTE.
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Affiliation(s)
- Alda Neis Miranda Araujo
- Graduate Program in Translational Medicine, Paulista School of Medicine, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Isabelle Nogueira Leroux
- School of Public Health, Department of Environmental Health, University of São Paulo, São Paulo, Brazil
| | - Danielle Zildeana Sousa Furtado
- Department of Chemistry, Institute of Environmental, Chemical, and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil,Technology School of Teresina, Teresina, Piauí, Brazil
| | | | - Bruno Lemos Batista
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo, Brazil
| | - Heron Dominguez Torres Silva
- Department of Chemistry, Institute of Environmental, Chemical, and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil
| | - Evangelos Handakas
- Department of Medicine, Computation and Medicine, Imperial College London, London, United Kingdom
| | - Nilson Antônio Assunção
- Department of Chemistry, Institute of Environmental, Chemical, and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, São Paulo, Brazil,Nilson Antônio Assunção ✉
| | - Kelly Polido Kaneshiro Olympio
- School of Public Health, Department of Environmental Health, University of São Paulo, São Paulo, Brazil,*Correspondence: Kelly Polido Kaneshiro Olympio ✉
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Capela EV, Bairos J, Pedro AQ, Neves MC, Raquel Aires-Barros M, Azevedo AM, Coutinho JA, Tavares AP, Freire MG. Supported ionic liquids as customizable materials to purify immunoglobulin G. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Gutiérrez JM, Teixeira CFP, Fan HW. Instituto Butantan and Instituto Clodomiro Picado: A long-standing partnership in science, technology, and public health. Toxicon 2021; 202:75-81. [PMID: 34562498 DOI: 10.1016/j.toxicon.2021.09.007] [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: 08/30/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 11/26/2022]
Abstract
Instituto Butantan (São Paulo, Brazil) and Instituto Clodomiro Picado (San José, Costa Rica) are public institutions devoted to scientific and technological research, production of antivenoms and other immunobiologicals, and a variety of public health interventions aimed at confronting the problem of snakebite envenoming in their countries and elsewhere. In the context of the 120th anniversary of Instituto Butantan, this work describes the historical developments in the relationship between these institutions, which has evolved into a solid cooperation platform in science, technology, and public health. The relationship between Instituto Butantan and Costa Rica started early in the 20th century, with the provision of Brazilian antivenoms to Costa Rica through the coordination of Instituto Butantan and the health system of Costa Rica, with the leadership of Clodomiro Picado Twight. After the decade of 1980, a prolific collaborative network has been established between Instituto Butantan and Instituto Clodomiro Picado (founded in 1970) in the areas of scientific and technological research in pharmacology, biochemistry, experimental pathology, immunology, and public health, as well as in antivenom development, production, preclinical evaluation, and quality control. In addition, both institutions have played a key role in the integration of regional efforts in Latin America to create a network of public institutions devoted to antivenom production and quality control, in close coordination with the Pan American Health Organization (PAHO). This long-standing partnership is an example of a highly productive south-south cooperation under a frame of solidarity and public well-being.
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Affiliation(s)
- José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica.
| | | | - Hui Wen Fan
- Núcleo de Produção de Soros, Instituto Butantan, São Paulo, Brazil
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Seddaoui N, Amine A. Smartphone-based competitive immunoassay for quantitative on-site detection of meat adulteration. Talanta 2021; 230:122346. [PMID: 33934795 DOI: 10.1016/j.talanta.2021.122346] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 01/15/2023]
Abstract
Rapid, sensitive, and portable analytical methods for on-site inspection of food fraud are now an urgent requirement to ensure food quality and satisfy the ethnic considerations of consumers. Hence, for the first time, a colorimetric smartphone-based immunoassay was developed for the on-site detection of pork adulteration in meat. In detail, the immunoassay was based on a competitive strategy in which immobilized standard porcine IgG competed with the target porcine IgG extracted in a single step from meat samples. The parameters involved in each step of the immunoassay conception and the digital colorimetric detection were carefully investigated and optimized. Using polystyrene microplates as ready-to-use stable and portable immunoplatforms, TMB as chromogenic substrate, smartphone as signal readout, and Image J software for image processing; the developed immunoassay was able to detect as low as 0.01% of pork in meat mixtures in a total assay time of 30 min. The selectivity of the immunoassay was evaluated for different meat species, and it was shown to selectively respond only to pork. Furthermore, excellent stability of the prepared immunological platform was demonstrated under extreme temperature conditions (50 °C), which confirms its high portability potential for in situ quantification of pork, while being relatively cost effective and non-laborious. The developed method also provides great precision (RSD < 6%) and accuracy (relative error< 6%). Given the universal use of smartphones as portable and affordable devices, such format of immunoassay could be a promising approach for rapid and sensitive real-time monitoring of food fraud.
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Affiliation(s)
- Narjiss Seddaoui
- Laboratory of Process Engineering and Environment, Faculty of Sciences and Techniques, Hassan II University of Casablanca, P.A. 146, Mohammedia, Morocco
| | - Aziz Amine
- Laboratory of Process Engineering and Environment, Faculty of Sciences and Techniques, Hassan II University of Casablanca, P.A. 146, Mohammedia, Morocco.
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Ramalho CC, Neves CMSS, Quental MV, Coutinho JAP, Freire MG. Separation of immunoglobulin G using aqueous biphasic systems composed of cholinium-based ionic liquids and poly(propylene glycol). JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2018; 93:1931-1939. [PMID: 30270961 PMCID: PMC6161813 DOI: 10.1002/jctb.5594] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND The use of antibodies, such as immunoglobulin G (IgG), has faced a significant growth in the past decades for biomedical and research purposes. However, antibodies are high cost biopharmaceuticals, for which the development of alternative and cost-effective purification strategies is still in high demand. RESULTS Aqueous biphasic systems (ABS) composed of poly(propylene glycol) (PPG) and cholinium-based ionic liquids (ILs) were investigated for the separation of IgG. The ABS phase diagrams were determined and characterized whenever required. Initial optimization studies with commercial IgG were carried out, followed by the extraction of IgG from rabbit serum. In all ABS, IgG preferentially partitions to the IL-rich phase, unveiling preferential interactions between IgG and ILs. Good results were obtained with commercial IgG, with extraction efficiencies ranging between 93% and 100%, and recovery yields ranging between 20% and 100%. Two of the best and two of the worst identified ABS were then evaluated in what concerns their performance to separate and recover IgG from rabbit serum. With these ABS, extraction efficiencies of 100% and recovery yields > 80% were obtained, indicating an increase in the recovery yield and extraction efficiencies when using real matrices. Under the best conditions studied, IgG with a purity level of 49% was obtained in a single-step. This purity level of IgG is higher than those previously reported using other IL-polymer ABS. CONCLUSION IgG preferentially migrates to the IL-rich phase in ABS formed by ILs and polymers, allowing the design of effective separation systems for its recovery from serum samples.
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Burnouf T. What can be learned in the snake antivenom field from the developments in human plasma derived products? Toxicon 2018; 146:77-86. [PMID: 29621528 DOI: 10.1016/j.toxicon.2018.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 03/20/2018] [Accepted: 04/01/2018] [Indexed: 10/17/2022]
Abstract
Human plasma-derived medicinal products and snake antivenom immunoglobulins are unique and complex therapeutic protein products. Human plasma products are obtained by fractionating large pools of plasma collected from blood plasma donors. They comprise a wide range of protein products, including polyvalent and hyperimmune immunoglobulins, coagulation factors, albumin, and various protease inhibitors that are transfused to patients affected by congenital or acquired protein deficiencies, immunological disorders, or metabolic diseases. Snake antivenoms are manufactured from pools of plasma collected from animals, typically horses, which have been immunized against snake venoms. Transfusing antivenoms is the cornerstone therapy to treat patients affected by snakebite envenoming. Over the last thirty years, much technical and regulatory evolution has been implemented to ensure that this class of biologicals meets modern quality requirements. The purpose of this review is to compare the main developments that took place in plasma production, protein fractionation, pathogen safety, quality control, preclinical and clinical studies, and regulations of these products. We also analyze whether both fields have been influencing and cross-fertilizing each other technically and in regulatory aspects to reach modern safety and efficacy standards at global levels, and how experience in the human plasma fractionation industry can further impact the manufacture of snake antivenom and that of other animal-derived antisera.
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Affiliation(s)
- Thierry Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC.
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A Chromatographic Method for Assay of Sodium Caprylate in the Formulation “Albumin, Solution for Infusions”. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1589-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Burnouf T. Current status and new developments in the production of plasma derivatives. ACTA ACUST UNITED AC 2016. [DOI: 10.1111/voxs.12269] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- T. Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering; College of Biomedical Engineering; Taipei Medical University; Taipei Taiwan
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Espitia-Saloma E, Vâzquez-Villegas P, Rito-Palomares M, Aguilar O. An integrated practical implementation of continuous aqueous two-phase systems for the recovery of human IgG: From the microdevice to a multistage bench-scale mixer-settler device. Biotechnol J 2016; 11:708-16. [DOI: 10.1002/biot.201400565] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 11/04/2015] [Accepted: 02/01/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Edith Espitia-Saloma
- Centro de Biotecnología-FEMSA, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey; Monterrey NL Mexico
| | - Patricia Vâzquez-Villegas
- Centro de Biotecnología-FEMSA, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey; Monterrey NL Mexico
| | - Marco Rito-Palomares
- Centro de Biotecnología-FEMSA, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey; Monterrey NL Mexico
| | - Oscar Aguilar
- Centro de Biotecnología-FEMSA, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey; Monterrey NL Mexico
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Burnouf T, Seghatchian J. “Go no Go” in plasma fractionation in the world’s emerging economies: still a question asked 70 years after the COHN process was developed! Transfus Apher Sci 2015; 51:113-9. [PMID: 25457750 PMCID: PMC7106424 DOI: 10.1016/j.transci.2014.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the late 1980s, following the human immunodeficiency virus (HIV) epidemic and transfusion-transmitted infections from plasma-derived coagulation factor concentrates to hemophiliacs, many “advanced thinkers” claimed that plasma-derived products would be completely replaced by the year 2000 by safe recombinant products in most developed countries. However, things have not turned out that way, due to both the continual progress witnessed in plasma fractionation and viral-reduction technologies and technical difficulties still being encountered in developing more cost-effective non-immunogenic, fully active recombinant therapeutic proteins. Accordingly, plasma fractionation remains a reasonably healthy industry worldwide, with an ever-increasing volume of plasma fractionated each year to meet the demands for safe and effective plasma-derived medicines at the global level. While high-income countries currently have generally good access to a panel of plasma-derived and recombinant products, desperate shortages of fractionated plasma products remain in developing economies, and patients still have to be treated inadequately. The steady development of the collection of whole blood in developing economies, to gradually cover the recognized needs for red blood cell concentrates, generates an increasing volume of recovered plasma that is currently wasted. Incentives are therefore high for those countries to consider fractionating such plasma as a means of enhancing their supply of products to treat patients, thereby also decreasing the level of dependence on imported products. Challenges of local plasma fractionation in developing economies are high, in a context where the technological and regulatory sophistication of the plasma fractionation industry is often underestimated, and the blood supply may be exposed to emerging infectious agents. In parallel, plasma product quality requirements and drivers are evolving in developed economies as is the awareness of clinicians to newer uses of products such as intravenous immunoglobulins, somewhat deviating from what currently remain the basic needs of developing countries in terms of affordable safe plasma products. Global market trends for plasma-derived products, through plasma fractionation, are still increasing, despite increasing use of recombinant products, and attention is being focused on the five Ws of the fractionation field: which products; where; when; what and how much; and who will be the main suppliers?
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Affiliation(s)
- Thierry Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
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Quental MV, Caban M, Pereira MM, Stepnowski P, Coutinho JAP, Freire MG. Enhanced extraction of proteins using cholinium-based ionic liquids as phase-forming components of aqueous biphasic systems. Biotechnol J 2015; 10:1457-66. [PMID: 25864445 DOI: 10.1002/biot.201500003] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 03/04/2015] [Accepted: 04/07/2015] [Indexed: 11/10/2022]
Abstract
Aqueous biphasic systems (ABS) composed of ionic liquids (ILs) are promising platforms for the extraction and purification of proteins. In this work, a series of alternative and biocompatible ABS composed of cholinium-based ILs and polypropylene glycol were investigated. The respective ternary phase diagrams, tie-lines, tie-line lengths and critical points were determined at 25°C. The extraction performance of these systems for commercial bovine serum albumin (BSA) was then evaluated. The stability of BSA at the IL-rich phase was ascertained by size exclusion high-performance liquid chromatography and Fourier transform infrared spectroscopy. Appropriate ILs lead to the complete extraction of BSA for the IL-rich phase, in a single step, while maintaining the protein's native conformation. Furthermore, to evaluate the performance of these systems when applied to real matrices, the extraction of BSA from bovine serum was additionally carried out, revealing that the complete extraction of BSA was maintained and achieved in a single step. The remarkable extraction efficiencies obtained are far superior to those observed with typical polymer-based ABS. Therefore, the proposed ABS may be envisaged as a more effective and biocompatible approach for the separation and purification of other value-added proteins.
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Affiliation(s)
- Maria V Quental
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Magda Caban
- Environmental Analysis Department, Faculty of Chemistry, University of Gdansk ul. Wita Stwosza , Gdansk, Poland
| | - Matheus M Pereira
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Piotr Stepnowski
- Environmental Analysis Department, Faculty of Chemistry, University of Gdansk ul. Wita Stwosza , Gdansk, Poland
| | - João A P Coutinho
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Mara G Freire
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal.
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Vargas M, Segura Á, Villalta M, Herrera M, Gutiérrez JM, León G. Purification of equine whole IgG snake antivenom by using an aqueous two phase system as a primary purification step. Biologicals 2015; 43:37-46. [DOI: 10.1016/j.biologicals.2014.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/12/2014] [Accepted: 10/06/2014] [Indexed: 10/24/2022] Open
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Vargas M, Segura Á, Wu YW, Herrera M, Chou ML, Villalta M, León G, Burnouf T. Human plasma-derived immunoglobulin G fractionated by an aqueous two-phase system, caprylic acid precipitation, and membrane chromatography has a high purity level and is free of detectable in vitro thrombogenic activity. Vox Sang 2014; 108:169-77. [PMID: 25469648 DOI: 10.1111/vox.12209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/17/2014] [Accepted: 09/17/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Instituto Clodomiro Picado has developed an immunoglobulin G (IgG) plasma fractionation process combining a polyethylene glycol/phosphate aqueous two-phase system (ATPS), caprylic acid precipitation and anion-exchange membrane chromatography. We evaluated the purity and in vitro thrombogenicity of such IgG, in line with current international requirements. MATERIALS AND METHODS Contributions of the different production steps to reduce thrombogenicity were assessed at 0·2 l-scale, and then the methodology was scaled-up to a 10 l-scale and final products (n = 3) were analysed. Purity, immunoglobulin composition, and subclass distribution were determined by electrophoretic and immunochemical methods. The in vitro thrombogenic potential was determined by a thrombin generation assay (TGA) using a Technothrombin fluorogenic substrate. Prekallikrein activator (PKA), plasmin, factor Xa, thrombin and thrombin-like activities were assessed using S-2302, S-2251, S-2222, S-2238 and S-2288 chromogenic substrates, respectively, and FXI by an ELISA. RESULTS The thrombogenicity markers were reduced mostly during the ATPS step and were found to segregate mostly into the discarded liquid upper phase. The caprylic acid precipitation eliminated the residual procoagulant activity. The IgG preparations made from the 10 l-batches contained 100% gamma proteins, low residual IgA and undetectable IgM. The IgG subclass distribution was not substantially affected by the process. TGA and amidolytic activities revealed an undetectable in vitro thrombogenic risk and the absence of proteolytic enzymes in the final product. CONCLUSIONS Fractionating human plasma by an ATPS combined with caprylic acid and membrane chromatography resulted in an IgG preparation of high purity and free of a detectable in vitro thrombogenic risk.
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Affiliation(s)
- M Vargas
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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14
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Affiliation(s)
- T. Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering; Taipei Medical University; Taipei Taiwan
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15
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Ding Z, Cao X. Affinity precipitation of human serum albumin using a thermo-response polymer with an L-thyroxin ligand. BMC Biotechnol 2013; 13:109. [PMID: 24341315 PMCID: PMC3903448 DOI: 10.1186/1472-6750-13-109] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 12/10/2013] [Indexed: 12/03/2022] Open
Abstract
Background Affinity precipitation has been reported as a potential technology for the purification of proteins at the early stage of downstream processing. The technology could be achieved using reversible soluble-insoluble polymers coupled with an affinity ligand to purify proteins from large volumes of dilute solution material such as fermentation broths or plasma. In this study, a thermo-response polymer was synthesized using N-methylol acrylamide, N-isopropyl acrylamide and butyl acrylate as monomers. The molecular weight of the polymer measured by the viscosity method was 3.06 × 104 Da and the lower critical solution temperature (LCST) was 28.0°C.The recovery of the polymer above the LCST was over 95.0%. Human serum albumin (HSA) is the most abundant protein in the human serum system, and it has important functions in the human body. High purity HSA is required in pharmaceuticals. Safe and efficient purification is a crucial process during HSA production. Results A thermo-response polymer was synthesized and L-thyroxin immobilized on the polymer as an affinity ligand to enable affinity precipitation of HSA. The LCST of the affinity polymer was 31.0°C and the recovery was 99.6% of its original amount after recycling three times. The optimal adsorption condition was 0.02 M Tris–HCl buffer (pH 7.0) and the HSA adsorption capacity was 14.9 mg/g polymer during affinity precipitation. Circular dichroism spectra and a ForteBio Octet system were used to analyze the interactions between the affinity polymer and HSA during adsorption and desorption. The recovery of total HSA by elution with 1.0 mol/L NaSCN was 93.6%. When the affinity polymer was applied to purification of HSA from human serum, HSA could be purified to single-band purity according to SDS-PAGE. Conclusion A thermo-response polymer was synthesized and L-thyroxin was attached to the polymer. Affinity precipitation was used to purify HSA from human serum.
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Affiliation(s)
| | - Xuejun Cao
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Rd,, Shanghai 200237, China.
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Wu YW, Champagne J, Toueille M, Gantier R, Burnouf T. Dedicated removal of immunoglobulin (Ig)A, IgM, and Factor (F)XI/activated FXI from human plasma IgG. Transfusion 2013; 54:169-78. [DOI: 10.1111/trf.12243] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 03/30/2013] [Accepted: 03/30/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Yu-Wen Wu
- Institute of Medical Biomaterials and Tissue Engineering, College of Oral Medicine; Taipei Medical University; Taipei Taiwan
- Research and Development, Chromatography Applications; Pall Life Sciences; Cergy France
- Pall Life Sciences; Northborough Massachusetts
- Human Protein Process Sciences (HPPS); Lille France
| | - Jérôme Champagne
- Institute of Medical Biomaterials and Tissue Engineering, College of Oral Medicine; Taipei Medical University; Taipei Taiwan
- Research and Development, Chromatography Applications; Pall Life Sciences; Cergy France
- Pall Life Sciences; Northborough Massachusetts
- Human Protein Process Sciences (HPPS); Lille France
| | - Magali Toueille
- Institute of Medical Biomaterials and Tissue Engineering, College of Oral Medicine; Taipei Medical University; Taipei Taiwan
- Research and Development, Chromatography Applications; Pall Life Sciences; Cergy France
- Pall Life Sciences; Northborough Massachusetts
- Human Protein Process Sciences (HPPS); Lille France
| | - René Gantier
- Institute of Medical Biomaterials and Tissue Engineering, College of Oral Medicine; Taipei Medical University; Taipei Taiwan
- Research and Development, Chromatography Applications; Pall Life Sciences; Cergy France
- Pall Life Sciences; Northborough Massachusetts
- Human Protein Process Sciences (HPPS); Lille France
| | - Thierry Burnouf
- Institute of Medical Biomaterials and Tissue Engineering, College of Oral Medicine; Taipei Medical University; Taipei Taiwan
- Research and Development, Chromatography Applications; Pall Life Sciences; Cergy France
- Pall Life Sciences; Northborough Massachusetts
- Human Protein Process Sciences (HPPS); Lille France
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