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Li D, Partin AC, Zhao L, Chen I, Michaels ML, Wang Z, Garces F, Gong D, Riley TP. Protocol for high-throughput cloning, expression, purification, and evaluation of bispecific antibodies. STAR Protoc 2022; 3:101428. [PMID: 35664258 PMCID: PMC9157557 DOI: 10.1016/j.xpro.2022.101428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Bispecific antibodies are a powerful new class of therapeutics, but their development often requires enormous amounts of time and resources. Here, we describe a high-throughput protocol for cloning, expressing, purifying, and evaluating bispecific antibodies. This protocol enables the rapid screening of large panels of bispecific molecules to identify top candidates for further development. For complete details on the use and execution of this protocol, please refer to Estes et al. (2021).
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Affiliation(s)
- Danqing Li
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Alexander C Partin
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Liangjun Zhao
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Irwin Chen
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., San Francisco, CA 94080, USA
| | - Mark L Michaels
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Zhulun Wang
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Fernando Garces
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Danyang Gong
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
| | - Timothy P Riley
- Department of Therapeutics Discovery, Amgen Research, Amgen Inc., Thousand Oaks, CA 91320, USA
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Javidanbardan A, Chu V, Conde JP, Azevedo AM. Microchromatography integrated with impedance sensor for bioprocess optimization: Experimental and numerical study of column efficiency for evaluation of scalability. J Chromatogr A 2021; 1661:462678. [PMID: 34879308 DOI: 10.1016/j.chroma.2021.462678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 10/19/2022]
Abstract
In the last decade, there has been a growing interest in developing microfluidic systems as new scale-down models for accelerated and cost-effective biopharmaceutical process development. Nonetheless, the research in this field is still in its infancy and requires further investigation to simplify and accelerate the microfabrication process. In addition, integration of different label-free sensors into the microcolumn systems has utmost importance to minimize result discrepancies during the scale-up process. In this study, we developed a simple, low-cost integrated microcolumn (26 µl). Micromilling technology was employed to define the geometry and shape of microfluidic structures using poly(methylmethacrylate) (PMMA). The design of PMMA microstructure was transferred to polydimethylsiloxane (PDMS), and interdigitated planar microelectrodes (IDE) were integrated into the system. To evaluate the scalability of the developed microcolumn column, column performance was assessed and compared with a conventional 1-ml prepacked column. Computational Fluid Dynamics (CFD) studies were performed for both columns to understand the differences between theoretical and experimental results regarding retention time and peak broadening. Despite obtaining an acceptable asymmetric factor for the microcolumn (1.03 ± 0.02), the reduced plate height value was still higher than the recommended range with the value of 4.14 ± 0.18. Nevertheless, the consistency and significant improvement of microcolumn efficiency compared to previous studies provide the possibility of developing robust simulation tools for transferring acquired experimental data for larger-scale units.
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Affiliation(s)
- Amin Javidanbardan
- IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Virginia Chu
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal
| | - João P Conde
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal.
| | - Ana M Azevedo
- IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
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A fully automated three-step protein purification procedure for up to five samples using the NGC chromatography system. Protein Expr Purif 2019; 153:1-6. [DOI: 10.1016/j.pep.2018.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/31/2018] [Accepted: 08/09/2018] [Indexed: 01/15/2023]
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Rodríguez-Ruiz I, Babenko V, Martínez-Rodríguez S, Gavira JA. Protein separation under a microfluidic regime. Analyst 2017; 143:606-619. [PMID: 29214270 DOI: 10.1039/c7an01568b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Lab-on-a-Chip (LoC), or micro-Total Analysis Systems (μTAS), is recognized as a powerful analytical technology with high capabilities, though end-user products for protein purification are still far from being available on the market. Remarkable progress has been achieved in the separation of nucleic acids and proteins using electrophoretic microfluidic devices, while pintsize devices have been developed for protein isolation according to miniaturized chromatography principles (size, charge, affinity, etc.). In this work, we review the latest advances in the fabrication of components, detection methods and commercial implementation for the separation of biological macromolecules based on microfluidic systems, with some critical remarks on the perspectives of their future development towards standardized microfluidic systems and protocols. An outlook on the current needs and future applications is also presented.
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Affiliation(s)
| | - V Babenko
- Laboratorio de Estudios Cristalograficos, Instituto Andaluz de Ciencias de la Tierra, CSIC-University of Granada, Avenida de las Palmeras 4, 18100 Armilla, Granada, Spain.
| | - S Martínez-Rodríguez
- Department of Biochemistry and Molecular Biology III and Immunology. University of Granada, Granada, Spain
| | - J A Gavira
- Laboratorio de Estudios Cristalograficos, Instituto Andaluz de Ciencias de la Tierra, CSIC-University of Granada, Avenida de las Palmeras 4, 18100 Armilla, Granada, Spain.
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