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Lu T, Tao L, Yu H, Zhang H, Wu Y, Wu S, Zhou J. Development of a reverse transcription loop mediated isothermal amplification assay for the detection of Mouse reovirus type 3 in laboratory mice. Sci Rep 2021; 11:3508. [PMID: 33568687 PMCID: PMC7875963 DOI: 10.1038/s41598-021-83034-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 01/25/2021] [Indexed: 11/29/2022] Open
Abstract
Mouse reovirus type 3 (Reo-3) infection is a viral disease that is harmful for laboratory mice. No rapid and accurate detection methods are currently available for this infection. In this study, we describe a rapid, simple, closed-tube, one step, reverse transcription-loop-mediated isothermal amplification (RT-LAMP) assay for Reo-3 and compare our assay with indirect enzyme-linked immunosorbent assay (ELISA). Three sets of RT-LAMP primers were designed by sequence analysis of a specific conserved sequence of the Reo-3 S1 gene. Using RS2 primer set, the RT-LAMP assay required 60 min at 65 °C to amplify the S1 gene in one step by using Reo-3 RNA template and had no cross-reactivity with the other related pathogens, such as Sendai virus (SV), pneumonia virus of mice (PVM), mouse hepatitis virus (MHV), Ectromelia virus (Ect), minute virus of mice (MVM), P. pneumotropica, B. bronchiseptica, K. pneumonia and P. aeruginosa. in our LAMP reaction system. The limit of detection (LOD) of our RT-LAMP assay is 4 fg/μL. The established RT-LAMP assay enabled visual detection when fluorescence detection reagents were added, and was demonstrated to be effective and efficient. We tested 30 clinical blood samples and five artificial positive samples from SPF mice, the concordance between the two methods for blood samples was 100% compared with indirect ELISA and RT-PCR. Considering its performance, specificity, sensitivity, and repeatability, the developed RT-LAMP could be a valuable tool to supply a more effective Reo-3 detection method in laboratory animal quality monitoring.
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Affiliation(s)
- Taofeng Lu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Lingyun Tao
- Shanghai Laboratory Animal Research Center, Shanghai, 201203, China
| | - Haibo Yu
- Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Hui Zhang
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Yanjun Wu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Shuguang Wu
- Institute for Laboratory Animal Research, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Jie Zhou
- Shanghai Laboratory Animal Research Center, Shanghai, 201203, China.
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Banijamali RS, Soleimanjahi H, Soudi S, Karimi H, Abdoli A, Seyed Khorrami SM, Zandi K. Kinetics of Oncolytic Reovirus T3D Replication and Growth Pattern in Mesenchymal Stem Cells. CELL JOURNAL 2019; 22:283-292. [PMID: 31863653 PMCID: PMC6947011 DOI: 10.22074/cellj.2020.6686] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/20/2019] [Indexed: 12/20/2022]
Abstract
Objective Currently, application of oncolytic-virus in cancer treatment of clinical trials are growing. Oncolytic-reovirus
is an attractive anti-cancer therapeutic agent for clinical testing. Many studies used mesenchymal stem cells (MSCs) as
a carrier cell to enhance the delivery and quality of treatment with oncolytic-virotherapy. But, biosynthetic capacity and
behavior of cells in response to viral infections are different. The infecting process of reoviruses takes from two-hours
to one-week, depends on host cell and the duration of different stages of virus replication cycle. The latter includes
the binding of virus particle, entry, uncoating, assembly and release of progeny-viruses. We evaluated the timing
and infection cycle of reovirus type-3 strain Dearing (T3D), using one-step replication experiment by molecular and
conventional methods in MSCs and L929 cell as control.
Materials and Methods In this experimental study, L929 and adipose-derived MSCs were infected with different
multiplicities of infection (MOI) of reovirus T3D. At different time points, the quantity of progeny viruses has been
measured using virus titration assay and quantitative real-time polymerase chain reaction (qRT-PCR) to investigate
the ability of these cells to support the reovirus replication. One-step growth cycle were examined by 50% cell culture
infectious dose (CCID50) and qRT-PCR.
Results The growth curve of reovirus in cells shows that MOI: 1 might be optimal for virus production compared to higher
and lower MOIs. The maximum quantity of virus production using MOI: 1 was achieved at 48-hours post-infection. The
infectious virus titer became stationary at 72-hours post-infection and then gradually decreased. The virus cytopathic
effect was obvious in MSCs and this cells were susceptible to reovirus infection and support the virus replication.
Conclusion Our data highlights the timing schedule for reovirus replication, kinetics models and burst size. Further
investigation is recommended to better understanding of the challenges and opportunities, for using MSCs loaded with
reovirus in cancer-therapy.
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Affiliation(s)
- Razieh Sadat Banijamali
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hoorieh Soleimanjahi
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Electronic Address:
| | - Sara Soudi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hesam Karimi
- Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Asghar Abdoli
- Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran
| | | | - Keivan Zandi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
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Optimization of artificial neural network by genetic algorithm for describing viral production from uniform design data. Process Biochem 2016. [DOI: 10.1016/j.procbio.2015.12.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Buenno LH, Rocha JC, Leme J, Caricati CP, Tonso A, Fernández Núñez EG. Use of uniform designs in combination with neural networks for viral infection process development. Biotechnol Prog 2015; 31:532-40. [DOI: 10.1002/btpr.2051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/20/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Laís Hara Buenno
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
| | - José Celso Rocha
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
| | - Jaci Leme
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan; Av. Vital Brasil, 1500 05503-900 São Paulo SP-Brazil
| | - Celso Pereira Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan; Av. Vital Brasil, 1500 05503-900 São Paulo SP-Brazil
| | - Aldo Tonso
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica; Universidade de São Paulo; Av. Prof. Luciano Gualberto, trav. 3, 380 05508-900 São Paulo SP-Brazil
| | - Eutimio Gustavo Fernández Núñez
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica; Universidade de São Paulo; Av. Prof. Luciano Gualberto, trav. 3, 380 05508-900 São Paulo SP-Brazil
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Kim JM, Song HY, Choi HJ, Yun SH, So KK, Ko HK, Kim DH. Changes in the mycovirus (LeV) titer and viral effect on the vegetative growth of the edible mushroom Lentinula edodes. Virus Res 2014; 197:8-12. [PMID: 25445339 DOI: 10.1016/j.virusres.2014.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/09/2014] [Accepted: 11/12/2014] [Indexed: 11/24/2022]
Abstract
This study attempted to cure the edible mushroom Lentinula edodes strain FMRI0339 of the L. edodes mycovirus (LeV) in order to obtain an isogenic virus-free fungal strain as well as a virus-infected strain for comparison. Mycelial fragmentation, followed by being spread on a plate with serial dilutions resulted in a virus-free colony. Viral absence was confirmed with gel electrophoresis after dsRNA-specific virus purification, Northern blot analysis, and PCR using reverse transcriptase (RT-PCR). Once cured, all of fungal cultures remained virus-free over the next two years. Interestingly, the viral titer of LeV varied depending on the culture condition. The titer from the plate culture showed at least a 20-fold higher concentration than that grown in the liquid culture. However, the reduced virus titer in the liquid culture was recovered by transferring the mycelia to a plate containing the same medium. In addition, oxygen-depleted culture conditions resulted in a significant decrease of viral concentration, but not to the extent seen in the submerged liquid culture. Although no discernable phenotypic changes in colony morphology were observed, virus-cured strains showed significantly higher growth rates and mycelial mass than virus-infected strains. These results indicate that LeV infection has a deleterious effect on mycelial growth.
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Affiliation(s)
- Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, Chonbuk 570-749, South Korea
| | - Ha-Yeon Song
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, Chonbuk 570-749, South Korea
| | - Hyo-Jin Choi
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, Chonbuk 570-749, South Korea
| | - Suk-Hyun Yun
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, Chonbuk 561-756, South Korea
| | - Kum-Kang So
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, Chonbuk 561-756, South Korea
| | - Han-Kyu Ko
- Forest Mushroom Research Center, Yeoju, Gyeonggi 469-803, South Korea
| | - Dae-Hyuk Kim
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, Chonbuk 561-756, South Korea.
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Lactate regulates myogenesis in C2C12 myoblasts in vitro. Stem Cell Res 2014; 12:742-53. [PMID: 24735950 DOI: 10.1016/j.scr.2014.03.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 02/24/2014] [Accepted: 03/17/2014] [Indexed: 01/26/2023] Open
Abstract
Satellite cells (SCs) are the resident stem cells of skeletal muscle tissue which play a major role in muscle adaptation, e.g. as a response to physical training. The aim of this study was to examine the effects of an intermittent lactate (La) treatment on the proliferation and differentiation of C2C12 myoblasts, simulating a microcycle of high intensity endurance training. Furthermore, the involvement of reactive oxygen species (ROS) in this context was examined. C2C12 myoblasts were therefore repeatedly incubated for 2 h each day with 10 mM or 20 mM La differentiation medium (DM) and in some cases 20 mM La DM plus different antioxidative substances for up to 5 days. La free (0 mM) DM served as a control. Immunocytochemical staining, Western blot analysis and colorimetric assays were used to assess oxidative stress, proliferation, and differentiation. Results show that La induces oxidative stress, enhances cell-cycle withdrawal, and initiates early differentiation but delays late differentiation in a timely and dose-dependent manner. These effects can be reversed by the addition of antioxidants to the La DM. We therefore conclude that La has a regulatory role in C2C12 myogenesis via a ROS-sensitive mechanism which elicits implications for reassessing some aspects of training and the use of nutritional supplements.
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Burgener A, Coombs K, Butler M. Intracellular ATP and total adenylate concentrations are critical predictors of reovirus productivity from Vero cells. Biotechnol Bioeng 2006; 94:667-79. [PMID: 16570315 DOI: 10.1002/bit.20873] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The productivity of reovirus type-3 Dearing was studied in cultures of Vero cells in serum-free media. Viral productivity was dependent upon the metabolic state of the cells rather than the phase of growth at which the cells were infected. Cells at different energy states were established by 24-h incubation in nutrient-depleted media. This resulted in variable intracellular nucleotide concentrations but high cellular viability was maintained. Of the nucleotides analyzed at the time of infection only the intracellular [ATP] and total adenylate nucleotides were positively correlated with viral productivity. The correlated data followed a sigmoidal plot with an equation defined by polynomial regression analysis. Apparent threshold values of 3.2 fmol/cell and 3.3 fmol/cell were established for ATP and total adenylate, respectively, at which the viral production was 50% the maximal value. Cultures with lower ATP and total adenylate levels at the time of infection resulted in as much as a 95% reduction in overall viral titer compared to the control. The adenylate energy charge (AEC) showed a negative correlation with viral production with an AEC value >0.97 resulting in low virus productivity. Intracellular ATP or total adenylate concentration at the point of infection may be used as a predictor of viral yield in bioprocesses designed for virus/vaccine production.
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Affiliation(s)
- A Burgener
- Department of Microbiology, Buller Bldg., University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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