1
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Vitharana S, Stillahn JM, Katayama DS, Henry CS, Manning MC. Application of Formulation Principles to Stability Issues Encountered During Processing, Manufacturing, and Storage of Drug Substance and Drug Product Protein Therapeutics. J Pharm Sci 2023; 112:2724-2751. [PMID: 37572779 DOI: 10.1016/j.xphs.2023.08.003] [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: 10/14/2022] [Revised: 07/24/2023] [Accepted: 08/07/2023] [Indexed: 08/14/2023]
Abstract
The field of formulation and stabilization of protein therapeutics has become rather extensive. However, most of the focus has been on stabilization of the final drug product. Yet, proteins experience stress and degradation through the manufacturing process, starting with fermentaition. This review describes how formulation principles can be applied to stabilize biopharmaceutical proteins during bioprocessing and manufacturing, considering each unit operation involved in prepration of the drug substance. In addition, the impact of the container on stabilty is discussed as well.
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Affiliation(s)
| | - Joshua M Stillahn
- Legacy BioDesign LLC, Johnstown, CO 80534, USA; Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | | | - Charles S Henry
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Mark Cornell Manning
- Legacy BioDesign LLC, Johnstown, CO 80534, USA; Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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2
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Abstract
In the past 30 years, highly specific drugs, known as antibodies, have conquered the biopharmaceutical market. In addition to monoclonal antibodies (mAbs), antibody fragments are successfully applied. However, recombinant production faces challenges. Process analytical tools for monitoring and controlling production processes are scarce and time-intensive. In the downstream process (DSP), affinity ligands are established as the primary and most important step, while the application of other methods is challenging. The use of these affinity ligands as monitoring tools would enable a platform technology to monitor process steps in the USP and DSP. In this review, we highlight the current applications of affinity ligands (proteins A, G, and L) and discuss further applications as process analytical tools.
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3
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Rodriguez EL, Poddar S, Iftekhar S, Suh K, Woolfork AG, Ovbude S, Pekarek A, Walters M, Lott S, Hage DS. Affinity chromatography: A review of trends and developments over the past 50 years. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1157:122332. [PMID: 32871378 PMCID: PMC7584770 DOI: 10.1016/j.jchromb.2020.122332] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/08/2020] [Accepted: 08/12/2020] [Indexed: 12/16/2022]
Abstract
The field of affinity chromatography, which employs a biologically-related agent as the stationary phase, has seen significant growth since the modern era of this method began in 1968. This review examines the major developments and trends that have occurred in this technique over the past five decades. The basic principles and history of this area are first discussed. This is followed by an overview of the various supports, immobilization strategies, and types of binding agents that have been used in this field. The general types of applications and fields of use that have appeared for affinity chromatography are also considered. A survey of the literature is used to identify major trends in these topics and important areas of use for affinity chromatography in the separation, analysis, or characterization of chemicals and biochemicals.
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Affiliation(s)
| | - Saumen Poddar
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Sazia Iftekhar
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Kyungah Suh
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Ashley G Woolfork
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Susan Ovbude
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Allegra Pekarek
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Morgan Walters
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Shae Lott
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - David S Hage
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA.
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4
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Gupta N, Ansari A, Dhoke GV, Chilamari M, Sivaccumar J, Kumari S, Chatterjee S, Goyal R, Dutta PK, Samarla M, Mukherjee M, Sarkar A, Mandal SK, Rai V, Biswas G, Sengupta A, Roy S, Roy M, Sengupta S. Computationally designed antibody-drug conjugates self-assembled via affinity ligands. Nat Biomed Eng 2019; 3:917-929. [PMID: 31686001 DOI: 10.1038/s41551-019-0470-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 09/22/2019] [Indexed: 11/09/2022]
Abstract
Antibody-drug conjugates (ADCs) combine the high specificity of antibodies with cytotoxic payloads. However, the present strategies for the synthesis of ADCs either yield unstable or heterogeneous products or involve complex processes. Here, we report a computational approach that leverages molecular docking and molecular dynamics simulations to design ADCs that self-assemble through the non-covalent binding of the antibody to a payload that we designed to act as an affinity ligand for specific conserved amino acid residues in the antibody. This method does not require modifications to the antibody structure and yields homogenous ADCs that form in less than 8 min. We show that two conjugates, which consist of hydrophilic and hydrophobic payloads conjugated to two different antibodies, retain the structure and binding properties of the antibody and its biological specificity, are stable in plasma and improve anti-tumour efficacy in mice with non-small cell lung tumour xenografts. The relative simplicity of the approach may facilitate the production of ADCs for the targeted delivery of cytotoxic payloads.
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Affiliation(s)
- Nimish Gupta
- Akamara Therapeutics, Cambridge, MA, USA. .,Akamara Biomedicine Private Limited, Delhi, India. .,India Innovation Research Center, Delhi, India. .,Symbiosis International (Deemed University), Pune, India.
| | - Aasif Ansari
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Gaurao V Dhoke
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | | | - Jwala Sivaccumar
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Smita Kumari
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Snigdha Chatterjee
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Ravinder Goyal
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Pradip Kumar Dutta
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Mallik Samarla
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | | | - Arindam Sarkar
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India.,India Innovation Research Center, Delhi, India
| | - Swadhin K Mandal
- Indian Institute of Science Education and Research Kolkata, Mohanpur, India
| | - Vishal Rai
- Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Goutam Biswas
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Aniruddha Sengupta
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India.,India Innovation Research Center, Delhi, India
| | - Sudip Roy
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India
| | - Monideepa Roy
- Akamara Therapeutics, Cambridge, MA, USA.,Akamara Biomedicine Private Limited, Delhi, India.,India Innovation Research Center, Delhi, India.,Symbiosis International (Deemed University), Pune, India
| | - Shiladitya Sengupta
- Center for Engineered Therapeutics, Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA. .,Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA. .,Dana-Farber Cancer Institute, Boston, MA, USA.
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5
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Ertekin Ö, Kaymak T, Pirinçci ŞŞ, Akçael E, Öztürk S. Aflatoxin-specific monoclonal antibody selection for immunoaffinity column development. Biotechniques 2019; 66:261-268. [PMID: 31124703 DOI: 10.2144/btn-2018-0143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Antibodies are the basic components of immunoanalytical systems used for detection of a wide range of analytes. Although there are some ground rules for antibody selection, analyte- and assay-specific criteria are the ones that determine the ultimate success of the immunoassays. In this study, we introduced an effective antibody selection procedure for the development of immunoaffinity columns for aflatoxins. The designed scheme puts emphasis on solvent- and matrix-related characterization steps and was used to comparatively evaluate eight monoclonal antibodies. The selected antibody was tolerant to 40% methanol, 20% acetonitrile, 30% acetone and 40% ethanol and did not interact with corn, red pepper or hazelnut extracts. Immunoaffinity columns developed with the selected antibody were validated by 15 independent aflatoxin analysis laboratories.
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Affiliation(s)
- Özlem Ertekin
- TÜBİTAK, The Scientific & Technological Research Council of Turkey, Marmara Research Center, Genetic Engineering & Biotechnology Institute, 41470 Gebze, Kocaeli, Turkey
| | - Tuğrul Kaymak
- Republic of Turkey Ministry of Food Agriculture & Livestock, General Directorate of Food & Control, Turkey
| | - Şerife Şeyda Pirinçci
- TÜBİTAK, The Scientific & Technological Research Council of Turkey, Marmara Research Center, Genetic Engineering & Biotechnology Institute, 41470 Gebze, Kocaeli, Turkey
| | - Esin Akçael
- TÜBİTAK, The Scientific & Technological Research Council of Turkey, Marmara Research Center, Genetic Engineering & Biotechnology Institute, 41470 Gebze, Kocaeli, Turkey
| | - Selma Öztürk
- TÜBİTAK, The Scientific & Technological Research Council of Turkey, Marmara Research Center, Genetic Engineering & Biotechnology Institute, 41470 Gebze, Kocaeli, Turkey
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Ikeda K, Ejima D, Arakawa T, Koyama AH. Protein aggregation suppressor arginine as an effective mouth cleaning agent. Int J Biol Macromol 2019; 122:224-227. [PMID: 30393137 DOI: 10.1016/j.ijbiomac.2018.10.158] [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: 10/06/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 11/28/2022]
Abstract
We have tested here whether or not arginine, a well-known aggregation suppressor, is effective in removing bacterial cells, which may present a potential risk of accidental pneumonia infection in aged individuals, from the oral mucosal membranes. This is based on the ability of arginine to suppress protein-protein interaction and surface adsorption and increase the solubility of organic compounds. Twelve student volunteers were subjected to mouthwashes with saline, citrate buffer (pH 3.5), arginine (pH 3.5) and a commercial Listerine. Insignificant effects were observed with saline and citrate buffer, whereas arginine and Listerine mouthwashes led to significant reduction of bacterial cells from the dorsal side of the volunteer's tongue. Arginine also appeared to disrupt biofilms present in the mouth.
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Affiliation(s)
- Keiko Ikeda
- Adult Nursing, School of Health and Nursing Science, Wakayama Medical University, Wakayama 641-0011, Wakayama, Japan
| | - Daisuke Ejima
- Technology Development, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Hyogo, Japan
| | - Tsutomu Arakawa
- Alliance Protein Laboratories, San Diego, CA 92121, United States of America.
| | - A Hajime Koyama
- Graduate School of Medicine, Wakayama Medical University, Wakayama 641-0011, Wakayama, Japan
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Arakawa T. Review on the Application of Mixed-mode Chromatography for Separation of Structure Isoforms. Curr Protein Pept Sci 2018; 20:56-60. [DOI: 10.2174/1389203718666171009111033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/25/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023]
Abstract
Proteins often generate structure isoforms naturally or artificially due to, for example, different glycosylation, disulfide scrambling, partial structure rearrangement, oligomer formation or chemical modification. The isoform formations are normally accompanied by alterations in charged state or hydrophobicity. Thus, isoforms can be fractionated by reverse-phase, hydrophobic interaction or ion exchange chromatography. We have applied mixed-mode chromatography for fractionation of isoforms for several model proteins and observed that cation exchange Capto MMC and anion exchange Capto adhere columns are effective in separating conformational isoforms and self-associated oligomers.
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Affiliation(s)
- Tsutomu Arakawa
- Alliance Protein Laboratories, A Division of KBI Biophama, 6042 Cornerstone Court West, San Diego, CA 92121, United States
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Halan V, Maity S, Bhambure R, Rathore AS. Multimodal Chromatography for Purification of Biotherapeutics – A Review. Curr Protein Pept Sci 2018; 20:4-13. [DOI: 10.2174/1389203718666171020103559] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/01/2017] [Accepted: 09/22/2017] [Indexed: 12/11/2022]
Abstract
Process chromatography forms the core of purification of biotherapeutics. The unparalleled
selectivity that it offers over other alternatives combined with the considerable robustness and scalability
make it the unit operation of choice in downstream processing. It is typical to have three to five chromatography
steps in a purification process for a biotherapeutic. Generally, these steps offer different modes
of separation such as ion-exchange, reversed phase, size exclusion, and hydrophobic interaction. In the
past decade, multimodal chromatography has emerged as an alternative to the traditional modes. It involves
use of more than one mode of separation and typically combines ion-exchange and hydrophobic
interactions to achieve selectivity and sensitivity. Over the last decade, numerous authors have demonstrated
the significant potential that multimode chromatography offers as a protein purification tool. This
review aims to present key recent developments that have occurred on this topic together with a perspective
on future applications of multimodal chromatography.
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Affiliation(s)
- Vivek Halan
- Zumutor Biologics Private Limited, Yeshwanthpur, Bangalore, India
| | - Sunit Maity
- Zumutor Biologics Private Limited, Yeshwanthpur, Bangalore, India
| | | | - Anurag S. Rathore
- Department of Chemical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, India
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Arakawa T, Tokunaga M, Maruyama T, Shiraki K. Two Elution Mechanisms of MEP Chromatography. Curr Protein Pept Sci 2017; 20:28-33. [PMID: 29150920 DOI: 10.2174/1389203718666171117105132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/02/2017] [Accepted: 11/08/2017] [Indexed: 11/22/2022]
Abstract
MEP (mercapto-ethyl-pyridine) HyperCel is one of the hydrophobic charge induction chromatography (HCIC) resins. Under normal operation, proteins are bound to the MEP resin at neutral pH, at which MEP is not charged, mostly via hydrophobic interaction. MEP has a pyridine group, whose pK is 4.8, and hence is positively charged at acidic pH range. Based on the binding mechanism (i.e., hydrophobic interaction) and the induced positive charge at acidic pH, there may be two ways to elute the bound proteins. One way is to bring the pH down to protonate both MEP resin and the bound protein, leading to charge repulsion and thereby elution. Another way is to use hydrophobic interaction modifiers, which are often used in hydrophobic interaction chromatography, to reduce hydrophobic interaction. Here, we summarize such two possible elution approaches.
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Affiliation(s)
- Tsutomu Arakawa
- Alliance Protein Laboratories, A Division of KBI Biopharma, 6042 Cornerstone Court West, San Diego, CA 92121, United States
| | - Masao Tokunaga
- Applied and Molecular Microbiology, Faculty of Agriculture, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Takuya Maruyama
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305- 8573, Japan
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305- 8573, Japan
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10
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Mustafaoglu N, Kiziltepe T, Bilgicer B. Antibody purification via affinity membrane chromatography method utilizing nucleotide binding site targeting with a small molecule. Analyst 2016; 141:6571-6582. [PMID: 27845784 PMCID: PMC5245175 DOI: 10.1039/c6an02145j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Here, we present an affinity membrane chromatography technique for purification of monoclonal and polyclonal antibodies from cell culture media of hybridomas and ascites fluids. The m-NBST method utilizes the nucleotide-binding site (NBS) that is located on the Fab variable domain of immunoglobulins to enable capturing of antibody molecules on a membrane affinity column via a small molecule, tryptamine, which has a moderate binding affinity to the NBS. Regenerated cellulose membrane was selected as a matrix due to multiple advantages over traditionally used resin-based affinity systems. Rituximab was used for proof of concept experiments. Antibody purification was accomplished by first capture of injected samples while running equilibration buffer (50 mM sodium phosphate pH 7.0), followed by elution achieved by running a gradient of mild elution buffer (3 M NaCl in 50 mM phosphate pH 7.0). The results indicate that the m-NBST column efficiency for Rituximab was >98%, with a purity level of >98%. The quality and the capacity of this small molecule membrane affinity purification method is further evaluated for a number of parameters such as: injection concentrations, volumes, wash/bind time, elution gradient, antibody/protein-contaminant combinations, effects of injection buffer, post-purification antigen binding activity of antibodies, and column reusability and stability.
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Affiliation(s)
- Nur Mustafaoglu
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA
| | - Tanyel Kiziltepe
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Advanced Diagnostics and Therapeutics, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA
| | - Basar Bilgicer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Advanced Diagnostics and Therapeutics, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Department of Chemistry and Biochemistry, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Mike and Josie Harper Cancer Research Institute, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA and Center for Rare & Neglected Diseases, University of Notre Dame, University of Notre Dame, Notre Dame, IN, USA.
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11
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Arakawa T, Kurosawa Y, Storms M, Maruyama T, Okumura C, Kita Y. Capto MMC mixed-mode chromatography of murine and rabbit antibodies. Protein Expr Purif 2016; 127:105-110. [DOI: 10.1016/j.pep.2016.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/05/2016] [Accepted: 07/16/2016] [Indexed: 11/29/2022]
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12
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Martínez-Flores JA, Serrano M, Pérez D, Lora D, Paz-Artal E, Morales JM, Serrano A. Detection of circulating immune complexes of human IgA and beta 2 glycoprotein I in patients with antiphospholipid syndrome symptomatology. J Immunol Methods 2015; 422:51-8. [PMID: 25865263 DOI: 10.1016/j.jim.2015.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 03/28/2015] [Accepted: 04/01/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Patients with antiphospholipid syndrome (APS) have a hypercoagulable condition associated with the presence of antiphospholipid autoantibodies (aPL). Consensus antibodies for diagnosis are lupus anticoagulant, anti-beta2 glycoprotein I (B2GPI) and anticardiolipin (IgG or IgM). Circulating immunocomplexes (CIC) of B2GPI associated with IgM or IgG were reported. Isolated IgA aB2GPI antibodies have achieved high diagnostic value although specific CIC of B2GPI bounded to IgA (B2A-CIC) has still not been described. CIC detection assays are mainly based on interaction with complement and are not appropriate to detect B2A-CIC because IgA does not fix complement using the classical pathway. PATIENTS AND METHODS Sera from healthy blood donors (N= 247) and from patients with thrombosis background and isolate positive for IgA aB2GPI (N = 68) were studied in a case-control study. Two methods were applied, these being a capture ELISA to quantify specific B2A-CIC and quantification of total IgA anti-B2GPI after dissociating CIC. RESULTS B2A-CIC values in APS-patients were 19.27 ± 2.6 AU vs 6.1 ± 0.4 AU in blood donors (p < 0.001). There were 36.4% B2A-CIC positive patients (cutoff 21 AU) versus 5.5% in blood donors (p < 0.001). Dissociated IgA aB2GPI levels (total IgA aB2GPI) were 146.8 ± 10.8 IU/mL in patients vs. 22.4 IU/mL in controls (p < 0.001). B2A-CIC was independent of B2GPI and autoantibodies IgA aB2GPI serum levels. CONCLUSION B2A-CIC can be identified and quantified in an easy and reproducible manner using two complement-independent methods. The use of these tests in prospective studies will allow better understanding of the prognosis and outcome of patients.
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Affiliation(s)
- José A Martínez-Flores
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Manuel Serrano
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Dolores Pérez
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - David Lora
- Epidemiology Section, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Estela Paz-Artal
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain; Immunology Section, Universidad San Pablo-CEU, Madrid, Spain
| | - José M Morales
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Antonio Serrano
- Department of Immunology, Instituto de Investigación Hospital Universitario 12 de Octubre, Madrid, Spain; Immunology Section, Universidad San Pablo-CEU, Madrid, Spain.
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13
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High-value products from plants: the challenges of process optimization. Curr Opin Biotechnol 2015; 32:156-162. [PMID: 25562816 DOI: 10.1016/j.copbio.2014.12.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 11/20/2022]
Abstract
Plants can be used to produce a diverse repertoire of complex small-molecule compounds and recombinant proteins that are valuable as industrial and pharmaceutical products. But as we move from proof-of-principle experiments and begin to consider the realistic prospects of commercial production, the focus must shift from the achievement of target molecule production and move towards quality, purity and yield aspects that determine commercial feasibility. This review describes some of the recent advances that have been implemented to improve the development of integrated production processes for high-value molecules expressed in plants, including the introduction of novel procedures to increase the likelihood of regulatory acceptance.
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