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Zimmerman AJ, de Oliveira GP, Su X, Wood J, Fu Z, Pinckney B, Tigges J, Ghiran I, Ivanov AR. Multimode chromatography-based techniques for high purity isolation of extracellular vesicles from human blood plasma. JOURNAL OF EXTRACELLULAR BIOLOGY 2024; 3:e147. [PMID: 38751711 PMCID: PMC11080799 DOI: 10.1002/jex2.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 03/08/2024] [Indexed: 05/18/2024]
Abstract
Extracellular vesicles (EVs) play a pivotal role in various biological pathways, such as immune responses and the progression of diseases, including cancer. However, it is challenging to isolate EVs at high purity from blood plasma and other biofluids due to their low abundance compared to more predominant biomolecular species such as lipoprotein particles and free protein complexes. Ultracentrifugation-based EV isolation, the current gold standard technique, cannot overcome this challenge due to the similar biophysical characteristics of such species. We developed several novel approaches to enrich EVs from plasma while depleting contaminating molecular species using multimode chromatography-based strategies. On average, we identified 716 ± 68 and 1054 ± 35 protein groups in EV isolates from 100 µL of plasma using multimode chromatography- and ultracentrifugation-based techniques, respectively. The developed methods resulted in similar EV isolates purity, providing significant advantages in simplicity, throughput, scalability, and applicability for various downstream analytical and potential clinical applications.
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Affiliation(s)
- Alan J. Zimmerman
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Getulio Pereira de Oliveira
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Xianyi Su
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Jacqueline Wood
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Zhengxin Fu
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Brandy Pinckney
- Nano Flow Core Facility, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - John Tigges
- Nano Flow Core Facility, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Ionita Ghiran
- Department of Anesthesia, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Alexander R. Ivanov
- Barnett Institute of Chemical and Biological Analysis, Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
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2
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Ren Y, Ye P, Zhang L, Zhao J, Liu J, Lei J, Wang L. Three-dimensional porous wood monolithic columns for efficient purification of spike glycoprotein of SARS-CoV-2. Int J Biol Macromol 2023; 248:125713. [PMID: 37437676 DOI: 10.1016/j.ijbiomac.2023.125713] [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: 02/24/2023] [Revised: 05/26/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023]
Abstract
Considerable research has been devoted to finding a cost-effective chromatographic matrix with efficient adsorption and high throughput. Wood exhibits complex micro-network structures that make it a powerful contender for a novel environment-friendly chromatographic matrix material. We demonstrate a novel strategy to manufacture a wood monolithic column, which chemically modified the wood and imported diethyl aminoethyl, diethylamine, and amino groups. This wood monolithic column can maintain fully monolithic column performances and highly selective to spike glycoprotein of SARS-CoV-2 by ion exchange force. The wood monolithic column was evaluated by static adsorption, dynamic adsorption, and frontal analysis. The results showed that the static adsorption capacity of the wood monolithic column with 2-diethylaminoethylchloride hydrochloride for bovine serum albumin was 14.72 mg/g, and the adsorption process was chemisorption. In addition, it retained 80 % adsorption capacity after 110 repeated adsorption-elution cycles.
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Affiliation(s)
- Yuting Ren
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Peng Ye
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Limei Zhang
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Jingyang Zhao
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
| | - Jing Liu
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China; MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Jiandu Lei
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China; MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.
| | - Luying Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China; MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
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3
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Gerstweiler L, Billakanti J, Bi J, Middelberg APJ. An integrated and continuous downstream process for microbial virus-like particle vaccine biomanufacture. Biotechnol Bioeng 2022; 119:2122-2133. [PMID: 35478403 PMCID: PMC9542101 DOI: 10.1002/bit.28118] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/11/2022] [Accepted: 04/21/2022] [Indexed: 12/05/2022]
Abstract
In this study, we present the first integrated and continuous downstream process for the production of microbial virus‐like particle vaccines. Modular murine polyomavirus major capsid VP1 with integrated J8 antigen was used as a model virus‐like particle vaccine. The integrated continuous downstream process starts with crude cell lysate and consists of a flow‐through chromatography step followed by periodic counter‐current chromatography (PCC) (bind‐elute) using salt‐tolerant mixed‐mode resin and subsequent in‐line assembly. The automated process showed a robust behavior over different inlet feed concentrations ranging from 1.0 to 3.2 mg ml−1 with only minimal adjustments needed, and produced continuously high‐quality virus‐like particles, free of nucleic acids, with constant purity over extended periods of time. The average size remained constant between 44.8 ± 2.3 and 47.2 ± 2.9 nm comparable to literature. The process had an overall product recovery of 88.6% and a process productivity up to 2.56 mg h−1 mlresin−1 in the PCC step, depending on the inlet concentration. Integrating a flow through step with a subsequent PCC step allowed streamlined processing, showing a possible continuous pathway for a wide range of products of interest.
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Affiliation(s)
- Lukas Gerstweiler
- The University of Adelaide, School of Chemical Engineering and Advanced Materials, 5005, Adelaide, Australia
| | - Jagan Billakanti
- Global Life Sciences Solutions Australia Pty Ltd, Level 11, 32 Phillip St, Parramatta, NSW, 2150, Australia
| | - Jingxiu Bi
- The University of Adelaide, School of Chemical Engineering and Advanced Materials, 5005, Adelaide, Australia
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4
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Sánchez-Trasviña C, Fuks P, Mushagasha C, Kimerer L, Mayolo-Deloisa K, Rito-Palomares M, Carta G. Structure and functional properties of Capto™ Core 700 core-shell particles. J Chromatogr A 2020; 1621:461079. [DOI: 10.1016/j.chroma.2020.461079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 01/13/2023]
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5
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Hillebrandt N, Vormittag P, Bluthardt N, Dietrich A, Hubbuch J. Integrated Process for Capture and Purification of Virus-Like Particles: Enhancing Process Performance by Cross-Flow Filtration. Front Bioeng Biotechnol 2020; 8:489. [PMID: 32671023 PMCID: PMC7326125 DOI: 10.3389/fbioe.2020.00489] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 04/27/2020] [Indexed: 01/22/2023] Open
Abstract
Virus-like particles (VLPs) are emerging nanoscale protein assemblies applied as prophylactic vaccines and in development as therapeutic vaccines or cargo delivery systems. Downstream processing (DSP) of VLPs comes both with challenges and opportunities, depending on the complexity and size of the structures. Filtration, precipitation/re-dissolution and size-exclusion chromatography (SEC) are potent technologies exploiting the size difference between product and impurities. In this study, we therefore investigated the integration of these technologies within a single unit operation, resulting in three different processes, one of which integrates all three technologies. VLPs, contained in clarified lysate from Escherichia coli, were precipitated by ammonium sulfate, washed, and re-dissolved in a commercial cross-flow filtration (CFF) unit. Processes were analyzed for yield, purity, as well as productivity and were found to be largely superior to a reference centrifugation process. Productivity was increased 2.6-fold by transfer of the wash and re-dissolution process to the CFF unit. Installation of a multimodal SEC column in the permeate line increased purity to 96% while maintaining a high productivity and high yield of 86%. In addition to these advantages, CFF-based capture and purification allows for scalable and disposable DSP. In summary, the developed set-up resulted in high yields and purities, bearing the potential to be applied as an integrated process step for capture and purification of in vivo-assembled VLPs and other protein nanoparticles.
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Affiliation(s)
| | | | | | | | - Jürgen Hubbuch
- Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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6
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Polysaccharide-based chromatographic adsorbents for virus purification and viral clearance. J Pharm Anal 2020; 10:291-312. [PMID: 32292625 PMCID: PMC7104128 DOI: 10.1016/j.jpha.2020.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 12/20/2022] Open
Abstract
Viruses still pose a significant threat to human and animal health worldwide. In the fight against viral infections, high-purity viral stocks are needed for manufacture of safer vaccines. It is also a priority to ensure the viral safety of biopharmaceuticals such as blood products. Chromatography techniques are widely implemented at both academic and industrial levels in the purification of viral particles, whole viruses and virus-like particles to remove viral contaminants from biopharmaceutical products. This paper focuses on polysaccharide adsorbents, particulate resins and membrane adsorbers, used in virus purification/removal chromatography processes. Different chromatographic modes are surveyed, with particular attention to ion exchange and affinity/pseudo-affinity adsorbents among which commercially available agarose-based resins (Sepharose®) and cellulose-based membrane adsorbers (Sartobind®) occupy a dominant position. Mainly built on the development of new ligands coupled to conventional agarose/cellulose matrices, the development perspectives of polysaccharide-based chromatography media in this antiviral area are stressed in the conclusive part. Chromatography has been and is still extensively implemented in virus purification/removal downstream processes. Typical application fields are the manufacturing of purified viral vaccines and virus-free biopharmaceuticals. Agarose and cellulose remain the primary polysaccharide bases for chromatography adsorbents in such virus-related applications. Present R&D studies mainly focus on multimodal chromatography and affinity ligands.
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7
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Lima TM, Souza MO, Castilho LR. Purification of flavivirus VLPs by a two-step chomatographic process. Vaccine 2019; 37:7061-7069. [PMID: 31201056 DOI: 10.1016/j.vaccine.2019.05.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/01/2019] [Accepted: 05/22/2019] [Indexed: 12/16/2022]
Abstract
Flaviviruses are enveloped viruses with positive-sense, single-stranded RNA, which are most commonly transmitted by infected mosquitoes. Zika virus (ZIKV) and yellow fever virus (YFV) are flaviviruses that have caused significant outbreaks in the last few years. Since there is no approved vaccine against ZIKV, and since the existing YF attenuated vaccine presents disadvantages related to limited supply and to rare, but fatal adverse effects, there is an urgent need for new vaccines to control these diseases. Virus-like particles (VLPs) represent a recombinant platform to produce safe and immunogenic vaccines. Thus, based on our experience of expressing in recombinant mammalian cells VLPs of most flaviviruses circulating in the Americas, this work focused on the evaluation of chromatographic purification processes for zika and yellow-fever VLPs. The clarified cell culture supernatant was processed by a membrane-based anion-exchange chromatography and then a multimodal chromatographic step. With this process, it was possible to obtain the purified VLPs with a yield (including the clarification step) of 66.4% for zika and 68.1% for yellow fever. DNA clearance was in the range of 99.8-99.9%, providing VLP preparations that meet the WHO limit for this critical contaminant. Correct size and morphology of the purified VLPs were confirmed by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The promising results obtained for both zika and yellow fever VLPs indicate that this process could be potentially applied also to VLPs of other flaviviruses.
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Affiliation(s)
- Túlio M Lima
- Federal University of Rio de Janeiro (UFRJ), COPPE, Cell Culture Engineering Laboratory, Av. Horácio Macedo, 2030 sl. G115, 21941-598, Cidade Universitária, Brazil; Federal University of Rio de Janeiro (UFRJ), EQ, EPQB Graduate Program, Av. Horácio Macedo, 2030 sl. E206, 21941-598, Cidade Universitária, Brazil
| | - Matheus O Souza
- Federal University of Rio de Janeiro (UFRJ), COPPE, Cell Culture Engineering Laboratory, Av. Horácio Macedo, 2030 sl. G115, 21941-598, Cidade Universitária, Brazil
| | - Leda R Castilho
- Federal University of Rio de Janeiro (UFRJ), COPPE, Cell Culture Engineering Laboratory, Av. Horácio Macedo, 2030 sl. G115, 21941-598, Cidade Universitária, Brazil.
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8
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Lim PY, Cardosa MJ. Development of a sandwich ELISA to detect virus-like-particles in enterovirus A71 vaccines. J Virol Methods 2019; 270:113-119. [PMID: 31100287 DOI: 10.1016/j.jviromet.2019.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 02/14/2019] [Accepted: 05/13/2019] [Indexed: 01/04/2023]
Abstract
The goal of this paper was to develop a sandwich ELISA that can detect intact human enterovirus A71 (EV-A71) virus-like particles (VLPs) in vaccines. This assay specifically detected EV-A71 viruses from different sub-genogroups as well as EV-A71 VLPs, and treatment of VLPs with high heat and low pH reduced or completely abolished detection of the VLPs suggesting that the ELISA detected assembled particles. Using a purified VLP as a reference standard, a quantitative sandwich ELISA (Q-ELISA) was established which was used to monitor the yield and purity of the VLPs during manufacturing. Coupled with immunogenicity studies, the Q-ELISA was used to evaluate the performance of the VLPs and formalin-inactivated EV-A71 vaccine. This assay has the potential to play an important role in the development of an efficient process to produce and purify the VLPs and in examining the quality of EV-A71 vaccines.
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Affiliation(s)
- Pei-Yin Lim
- Sentinext Therapeutics Sdn Bhd, Suite 12A, Level 12, Menara Northam, 55 Jalan Sultan Ahmad Shah, Penang, 10050, Malaysia.
| | - Mary Jane Cardosa
- Sentinext Therapeutics Sdn Bhd, Suite 12A, Level 12, Menara Northam, 55 Jalan Sultan Ahmad Shah, Penang, 10050, Malaysia
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9
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Pei X, Fan X, Zhang H, Duan H, Xu C, Xie B, Wang L, Li X, Peng Y, Shen T. Low frequency, weak MCP-1 secretion and exhausted immune status of peripheral monocytes were associated with progression of severe enterovirus A71-infected hand, foot and mouth disease. Clin Exp Immunol 2019; 196:353-363. [PMID: 30697697 DOI: 10.1111/cei.13267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2019] [Indexed: 11/29/2022] Open
Abstract
A minority of hand, foot and mouth disease (HFMD) caused by enterovirus A71 (EV-A71) results in severe neural complications. However, whether monocyte-mediated immunity is involved in the disease progression of HFMD remains unknown. One hundred and twenty mild and 103 severe HFMD patients were recruited and enzyme-linked immunosorbent assay (ELISA), flow cytometry and Transwell culture were performed in the study. Peripheral monocyte counts were lower in both absolute counts and frequencies in severe cases compared to mild cases. After screening 10 monocyte-related cytokines by ELISA, only monocyte chemoattractant protein-1 (MCP-1) was found at higher levels in sera of mild cases compared to those with severe symptoms. Monocytes purified from mild cases produced more MCP-1 than the cells from severe patients when stimulated in vitro. We observed that immune exhaustion markers programmed death 1 (PD-1) and programmed death ligand 1 (PD-L1) were highly regulated on the surface of monocytes from severe cases compared to mild cases. PD-L1 blockade induced a higher production of MCP-1 in the supernatant of a Transwell system. The production of MCP-1 also increased following PD-L1 blockade of purified monocytes activated by granulocyte-macrophage colony-stimulating factor (GM-CSF) combined with R848 or EV-A71 virus. Our results indicate that absolute count, frequency and levels of MCP-1 secretion of peripheral monocytes, together with their immune status, probably contribute to differential disease prognosis in EV-A71-associated HFMD.
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Affiliation(s)
- X Pei
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - X Fan
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Center of Laboratory Medicine, Beijing Children Hospital, Beijing, China
| | - H Zhang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - H Duan
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - C Xu
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - B Xie
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - L Wang
- National Clinical Key Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - X Li
- National Clinical Key Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Y Peng
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - T Shen
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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Zhao D, Sun B, Sun S, Fu B, Liu C, Liu D, Chu Y, Ma Y, Bai L, Wu Y, Zhou Y, Su W, Hou A, Cai L, Xu F, Kong W, Jiang C. Characterization of human enterovirus71 virus-like particles used for vaccine antigens. PLoS One 2017; 12:e0181182. [PMID: 28732070 PMCID: PMC5521781 DOI: 10.1371/journal.pone.0181182] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 06/27/2017] [Indexed: 12/11/2022] Open
Abstract
Human enterovirus 71 (EV71) is a major causative pathogen of hand, foot and mouth disease (HFMD) and has caused outbreaks with significant mortality among young children in the Asia-Pacific region in recent years. Towards developing a vaccine for this disease, we have expressed and purified EV71 virus-like particles (VLPs), which resemble the authentic virus in appearance, capsid structure and protein sequence, from insect cells (Sf9) using a multistep chromatography process. We demonstrated intracellular localization of the VLPs in host cells by in situ immunogold detection, electron microscopy and immunofluorescence. Characteristics of these EV71 VLPs were studied using a variety of immunological and physicochemical techniques, which aimed to reveal that the purified EV71 VLPs have good morphology and structure consistent with natural EV71 empty capsids. Results of the amino acid analysis, SDS-PAGE, Western blotting and high-performance liquid chromatography confirmed the high purity of the EV71 VLPs. However the sedimentation coefficient of the VLPs showed that they were smaller than that of secreted EV71 VLPs purified by discontinuous cesium chloride density gradients, they were similar to the empty capsids of natural EV71 virions reported previously. Combined with the previous study that EV71 VLPs purified by a multistep chromatography process were able to elicit strong humoral immune responses in mice, our results further supported the conclusion that our EV71 VLPs had well-preserved molecular and structural characteristics. The EV71 VLPs produced from the baculovirus expression system and purified by a multistep chromatography process displayed key structural and immunological features, which would contribute to their efficacy as a HFMD vaccine.
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MESH Headings
- Amino Acid Sequence
- Animals
- Blotting, Western
- Chromatography, High Pressure Liquid
- Dynamic Light Scattering
- Electrophoresis, Polyacrylamide Gel
- Enterovirus A, Human/genetics
- Enterovirus A, Human/immunology
- Immunohistochemistry
- Mass Spectrometry
- Microscopy, Atomic Force
- Microscopy, Confocal
- Microscopy, Electron, Transmission
- Sf9 Cells
- Vaccines, Virus-Like Particle/chemistry
- Vaccines, Virus-Like Particle/genetics
- Vaccines, Virus-Like Particle/immunology
- Vaccines, Virus-Like Particle/ultrastructure
- Viral Vaccines/chemistry
- Viral Vaccines/immunology
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Affiliation(s)
- Dandan Zhao
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin Agricultural University, Changchun, China
| | - Bo Sun
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Shiyang Sun
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Bin Fu
- Beijing Proteome Research Center, Beijing, China
| | - Chuntian Liu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Dawei Liu
- Changchun BCHT Biotechnology Company, Changchun, China
| | - Yanfei Chu
- Changchun BCHT Biotechnology Company, Changchun, China
| | - Youlei Ma
- Changchun BCHT Biotechnology Company, Changchun, China
| | - Lu Bai
- Changchun BCHT Biotechnology Company, Changchun, China
| | - Yongge Wu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Yan Zhou
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Weiheng Su
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Ali Hou
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Linjun Cai
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Fei Xu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
| | - Wei Kong
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- * E-mail: (WK); (CJ)
| | - Chunlai Jiang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- * E-mail: (WK); (CJ)
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11
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James KT, Cooney B, Agopsowicz K, Trevors MA, Mohamed A, Stoltz D, Hitt M, Shmulevitz M. Novel High-throughput Approach for Purification of Infectious Virions. Sci Rep 2016; 6:36826. [PMID: 27827454 PMCID: PMC5101806 DOI: 10.1038/srep36826] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 10/21/2016] [Indexed: 01/02/2023] Open
Abstract
Viruses are extensively studied as pathogens and exploited as molecular tools and therapeutic agents. Existing methods to purify viruses such as gradient ultracentrifugation or chromatography have limitations, for example demand for technical expertise or specialized equipment, high time consumption, and restricted capacity. Our laboratory explores mutations in oncolytic reovirus that could improve oncolytic activity, and makes routine use of numerous virus variants, genome reassortants, and reverse engineered mutants. Our research pace was limited by the lack of high-throughput virus purification methods that efficiently remove confounding cellular contaminants such as cytokines and proteases. To overcome this shortcoming, we evaluated a commercially available resin (Capto Core 700) that captures molecules smaller than 700 kDa. Capto. Core 700 chromatography produced virion purity and infectivity indistinguishable from CsCl density gradient ultracentrifugation as determined by electron microscopy, gel electrophoresis analysis and plaque titration. Capto Core 700 resin was then effectively adapted to a rapid in-slurry pull-out approach for high-throughput purification of reovirus and adenovirus. The in-slurry purification approach offered substantially increased virus purity over crude cell lysates, media, or high-spin preparations and would be especially useful for high-throughput virus screening applications where density gradient ultracentrifugation is not feasible.
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Affiliation(s)
- Kevin T James
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, Alberta, Canada
| | - Brad Cooney
- GE Healthcare, LifeSciences, Marlborough, MA, US
| | - Kate Agopsowicz
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Mary Ann Trevors
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Adil Mohamed
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, Alberta, Canada
| | - Don Stoltz
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Mary Hitt
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Maya Shmulevitz
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, Alberta, Canada
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12
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Presenting native-like trimeric HIV-1 antigens with self-assembling nanoparticles. Nat Commun 2016; 7:12041. [PMID: 27349934 PMCID: PMC4931238 DOI: 10.1038/ncomms12041] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 05/24/2016] [Indexed: 01/01/2023] Open
Abstract
Structures of BG505 SOSIP.664 trimer in complex with broadly neutralizing antibodies (bNAbs) have revealed the critical role of trimeric context for immune recognition of HIV-1. Presentation of trimeric HIV-1 antigens on nanoparticles may thus provide promising vaccine candidates. Here we report the rational design, structural analysis and antigenic evaluation of HIV-1 trimer-presenting nanoparticles. We first demonstrate that both V1V2 and gp120 can be presented in native-like trimeric conformations on nanoparticles. We then design nanoparticles presenting various forms of stabilized gp140 trimer based on ferritin and a large, 60-meric E2p that displays 20 spikes mimicking virus-like particles (VLPs). Particle assembly is confirmed by electron microscopy (EM), while antigenic profiles are generated using representative bNAbs and non-NAbs. Lastly, we demonstrate high-yield gp140 nanoparticle production and robust stimulation of B cells carrying cognate VRC01 receptors by gp120 and gp140 nanoparticles. Together, our study provides an arsenal of multivalent immunogens for HIV-1 vaccine development.
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13
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Lee MFX, Chan ES, Tan WS, Tam KC, Tey BT. Negative chromatography of hepatitis B virus-like particle: Comparative study of different adsorbent designs. J Chromatogr A 2016; 1445:1-9. [DOI: 10.1016/j.chroma.2016.03.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/09/2016] [Accepted: 03/22/2016] [Indexed: 02/06/2023]
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