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Goodarzi MM, Jalalirad R, Doroud D, Hozouri H, Aghasadeghi M, Paryan M. Determining buffer conditions for downstream processing of VLP-based recombinant hepatitis B surface antigen using multimodal resins in bind-elute and flow-through purification modes. Sci Rep 2023; 13:10745. [PMID: 37400485 DOI: 10.1038/s41598-023-37614-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 06/24/2023] [Indexed: 07/05/2023] Open
Abstract
The difficulties in purification of VLP-based recombinant hepatitis B surface antigen (rHBsAg) are mainly emerged from inefficient semi-purification step plus proteins physicochemical properties and these issues make the downstream processing (DSP) very lengthy and expensive. In this study, optimization of rHBsAg (recombinantly-expressed in Pichia pastoris) DSP was performed using selection of buffering conditions in the semi-purification step. In the semi-purification optimization step, up to 73% of the protein impurities were eliminated and the utmost increase in rHBsAg purity (ca. 3.6-fold) was achieved using 20 mM sodium acetate, pH 4.5. By using rHBsAg binding and nonbinding situations obtained from the response surface plot in design of experiments (DOE), additional bind-elute and flow-through purification mode experiments were conducted and rHBsAg with high purity (near 100%) and recovery (> 83%) was achieved. Following assessment of critical quality attributes (i.e., purity, particle size distribution, host cell DNA, host cell protein, secondary structures, specific activity and relative potency), it was indicated that the characteristics of rHBsAg purified by the new DSP were similar or superior to the ones obtained from conventional DSP. The purification performance of the resin was constantly retained (97-100%) and no significant resin damage took place after 10 adsorption-elution-cleaning cycles. The new DSP developed for production of rHBsAg in this study can substitute the conventional one with granting satisfactory target protein quality, long-lasting resin efficacy, shorter and less expensive process. This process may be also employable for purification of both non-VLP- and VLP- based target proteins expressed in the yeast.
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Affiliation(s)
- Maryam Moazami Goodarzi
- Department of Research and Development, Production and Research Complex, Pasteur Institute of Iran, Karaj, 3159915111, Iran
| | - Reza Jalalirad
- Department of Research and Development, Production and Research Complex, Pasteur Institute of Iran, Karaj, 3159915111, Iran.
| | - Delaram Doroud
- Department of Research and Development, Production and Research Complex, Pasteur Institute of Iran, Karaj, 3159915111, Iran.
| | - Hamidreza Hozouri
- Department of Quality Management, Production and Research Complex, Pasteur Institute of Iran, Karaj, 3159915111, Iran
| | - Mohammadreza Aghasadeghi
- Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, 1316943551, Iran
- Viral Vaccine Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Mahdi Paryan
- Department of Research and Development, Production and Research Complex, Pasteur Institute of Iran, Karaj, 3159915111, Iran
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Ghorbani M, Shokri R, Kia V, Yari F, Sharifi Z, Paryan M. New design and optimization of an in-house quantitative TaqMan Real-Time PCR-based assay for the detection and monitoring of occult hepatitis B virus (genotype A-J) infection. Indian J Med Microbiol 2022; 40:560-566. [DOI: 10.1016/j.ijmmb.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 06/18/2022] [Accepted: 07/06/2022] [Indexed: 11/26/2022]
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3
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Fahmy HM, Abu Serea ES, Salah-Eldin RE, Al-Hafiry SA, Ali MK, Shalan AE, Lanceros-Méndez S. Recent Progress in Graphene- and Related Carbon-Nanomaterial-based Electrochemical Biosensors for Early Disease Detection. ACS Biomater Sci Eng 2022; 8:964-1000. [PMID: 35229605 DOI: 10.1021/acsbiomaterials.1c00710] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Graphene- and carbon-based nanomaterials are key materials to develop advanced biosensors for the sensitive detection of many biomarkers owing to their unique properties. Biosensors have attracted increasing interest because they allow efficacious, sensitive, selective, rapid, and low-cost diagnosis. Biosensors are analytical devices based on receptors for the process of detection and transducers for response measuring. Biosensors can be based on electrochemical, piezoelectric, thermal, and optical transduction mechanisms. Early virus identification provides critical information about potentially effective and selective therapies, extends the therapeutic window, and thereby reduces morbidity. The sensitivity and selectivity of graphene can be amended via functionalizing it or conjoining it with further materials. Amendment of the optical and electrical features of the hybrid structure by introducing appropriate functional groups or counterparts is especially appealing for quick and easy-to-use virus detection. Various techniques for the electrochemical detection of viruses depending on antigen-antibody interactions or DNA hybridization are discussed in this work, and the reasons behind using graphene and related carbon nanomaterials for the fabrication are presented and discussed. We review the existing state-of-the-art directions of graphene-based classifications for detecting DNA, protein, and hormone biomarkers and summarize the use of the different biosensors to detect several diseases, like cancer, Alzheimer's disease, and diabetes, to sense numerous viruses, including SARS-CoV-2, human immunodeficiency virus, rotavirus, Zika virus, and hepatitis B virus, and to detect the recent pandemic virus COVID-19. The general concepts, mechanisms of action, benefits, and disadvantages of advanced virus biosensors are discussed to afford beneficial evidence of the creation and manufacture of innovative virus biosensors. We emphasize that graphene-based nanomaterials are ideal candidates for electrochemical biosensor engineering due to their special and tunable physicochemical properties.
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Affiliation(s)
- Heba Mohamed Fahmy
- Biophysics Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Esraa Samy Abu Serea
- Chemistry and Biochemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt.,BCMaterials-Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Reem Essam Salah-Eldin
- Chemistry and Zoology Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | | | - Miar Khaled Ali
- Biotechnology/Biomolecular Chemistry Program, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Ahmed Esmail Shalan
- BCMaterials-Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain.,Central Metallurgical Research and Development Institute, P.O. Box 87, Helwan, 11422 Cairo, Egypt
| | - Senentxu Lanceros-Méndez
- BCMaterials-Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain.,IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
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4
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Design and development of a simple method for the detection and quantification of residual host cell DNA in recombinant rotavirus vaccine. Mol Cell Probes 2020; 55:101674. [PMID: 33253779 DOI: 10.1016/j.mcp.2020.101674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/11/2020] [Accepted: 11/20/2020] [Indexed: 11/22/2022]
Abstract
Rotavirus recombinant vaccine is usually produced in Vero cells. Residual host DNA may reside in the final product and is considered a source of contamination. WHO protocols indicate that biological products should be free of any type of impurity such as nucleic acids, endotoxins, and host cell intermediate materials. Therefore, all recombinant biological therapeutics should be assessed for residual host DNA. In the present study, a sensitive and specific real-time PCR method was developed to detect residual host cell DNA in the final product. The Beta-actin gene of Vero cells was selected to detect residual host cell DNA. One set of primers and a TaqMan probe were designed for the gene using AlleleID 6 software. Real-time PCR reactions were set up, and efficiency of 84% was obtained. The sensitivity and limit of detection of the assay were determined to be 0.176 Fg/μl and 0.044 Fg/μl, respectively. The intra-assay and inter-assay variations were 4.4% and 1.04%, respectively. Furthermore, the specificity and sensitivity of the assay were high enough, and the detection limit was lower than that of the FDA and WHO standards. This indicates that our assay is highly specific and sensitive to detect residual host DNA of Vero cells in the recombinant rotavirus vaccine.
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Shirvani R, Barshan-Tashnizi M, Shahali M. An investigation into gene copy number determination in transgenic yeast; The importance of selecting a reliable real-time PCR standard. Biologicals 2020; 65:10-17. [PMID: 32278615 DOI: 10.1016/j.biologicals.2020.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/27/2020] [Accepted: 04/01/2020] [Indexed: 11/17/2022] Open
Abstract
Nowadays, Pichia pastoris is a well-known yeast for the production of recombinant proteins. The yield of protein production tightly depends on the copy number of the gene of interest into the host chromosome. Real-time PCR has been used as a high throughput method for molecular detection of gene copy number. In light of determining an absolute gene copy number, the reliability of the qPCR quantification standard is a major issue and it can be a potential source of errors in the final results. Since the literature on this issue is inconclusive, we set out to find a reliable quantification method that allows comparing results in different laboratories. We generated standard curves for two genomic loci (5'UTR AOX1 and ARG4) and for plasmid DNA carrying hGM-CSF coding sequence. These data was used to calculate the integrated hGM-CSFcDNA copy number in a recombinant P. pastoris clone. In our expriments the 5'UTR AOX1 gene showed a more accurate quantification standard, based on more efficient amplification and better reproducibility. The results obtained in this study showed that the differences in terms of structure and length between circular plasmid and linear gDNA could be the source of significant differences in the pattern of DNA amplification.
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Affiliation(s)
- Roghayeh Shirvani
- Department of Quality Control, Research and Production Complex, Pasteur Institute of Iran, Tehran, Iran; Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Mohammad Barshan-Tashnizi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | - Maryam Shahali
- Department of Quality Control, Research and Production Complex, Pasteur Institute of Iran, Tehran, Iran.
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Liu XZ, Zhang B, Zhao W, Li G, Zhou ML, Wei JS, Zhou JH, Gao J, Wang ZM. Method validation of Q-PCR detection of host residual DNA in antibody drug based on protein A magnetic beads. Biologicals 2019; 62:65-71. [DOI: 10.1016/j.biologicals.2019.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 01/26/2023] Open
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Zhao F, Bai Y, Zeng R, Cao L, Zhu J, Han G, Chen Z. An Electrochemical Immunosensor with Graphene-Oxide-Ferrocene-based Nanocomposites for Hepatitis B Surface Antigen Detection. ELECTROANAL 2018. [DOI: 10.1002/elan.201800476] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Feijun Zhao
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
- College of Electronic Engineering and Automation; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Yan Bai
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Ruosheng Zeng
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Liangli Cao
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Jianming Zhu
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Guocheng Han
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
| | - Zhencheng Chen
- College of Life and Environmental Sciences; Guilin University of Electronic Technology; Guilin, Guangxi 541004 China
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Fazelahi M, Kia V, Kaghazian H, Paryan M. Quantitative real-time PCR technique for the identification of E. coli residual DNA in streptokinase recombinant product. Prep Biochem Biotechnol 2017; 47:986-989. [DOI: 10.1080/10826068.2017.1365251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mansoureh Fazelahi
- Department of Genetics Biology, Ashkezar Branch, Islamic Azad University, Yazd, Iran
| | - Vahid Kia
- Department of Medical Biotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hooman Kaghazian
- Department of Research and Development, Pasteur Institute of Iran, Tehran, Iran
| | - Mahdi Paryan
- Department of Research and Development, Pasteur Institute of Iran, Tehran, Iran
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Zamanian S, Mohammadi-Yeganeh S, Kia V, Kaghazian H, Paryan M. Design and validation of a new method to detect and quantify residual host cell DNA in human recombinant erythropoietin (rEPO). Prep Biochem Biotechnol 2017; 47:847-851. [PMID: 28426392 DOI: 10.1080/10826068.2017.1320292] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
During the purification of human recombinant erythropoietin (rEPO) from host cells, residual DNA may remain in final products. This contamination is a risk factor for patients and may result in the inactivation of some tumor suppressor genes or activation of oncogenes if its concentration is more than the standard defined by WHO. Based on WHO's criteria, acceptable level of residual DNA in biopharmaceuticals is less than 10-100 pg/dose. In this study, we have designed a sensitive and specific quantitative real-time polymerase chain reaction (PCR) assay for the detection of residual DNA in human rEPO products. All reported sequences of CHO's GAPDH gene were retrieved from GenBank, and a multiple alignment was performed using Mega 6 software to find conserved regions of the gene. Primers and probe were designed by AlleleID7 software for the highly conserved region. Quantitative real-time PCR showed an R2 value more than 0.99 and the efficiency equal to 101% indicating a highly accurate and efficiency of the reaction, respectively. Based on the standard curve, the limit of detection of the assay was determined to be 10 copies/µL (0.00967 fg/µL). In addition, the inter- and intra-assay of the test were determined to be 1.14% and 0.65%, respectively, which are in acceptable range according to the WHO's guidelines.
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Affiliation(s)
- Shima Zamanian
- a Faculty of Science, University of Guilan , Department of Biology , Rasht , Iran
| | - Samira Mohammadi-Yeganeh
- b Cellular and Molecular Biology Research Center , Shahid Beheshti University of Medical Sciences , Tehran , Iran.,c Department of Biotechnology, School of Advanced Technologies in Medicine , Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Vahid Kia
- d Faculty of Medicine, Department of Medical Biotechnology , Zanjan University of Medical Sciences , Zanjan , Iran
| | - Hooman Kaghazian
- e Department of Research and Development, Production and Research Complex , Pasteur Institute of Iran , Tehran , Iran
| | - Mahdi Paryan
- e Department of Research and Development, Production and Research Complex , Pasteur Institute of Iran , Tehran , Iran
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