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Yu T, Zhang C, Xing J, Zhang T, Xu Z, Di Y, Yang S, Jiang R, Tang J, Zhuang X, Jin N, Tian M. Ferritin-binding and ubiquitination-modified mRNA vaccines induce potent immune responses and protective efficacy against SARS-CoV-2. Int Immunopharmacol 2024; 129:111630. [PMID: 38320355 DOI: 10.1016/j.intimp.2024.111630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/08/2024]
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) incessantly engenders mutating strains via immune escape mechanisms, substantially escalating the risk of severe acute respiratory syndrome. In this context, the urgent development of innovative and efficacious mRNA vaccines is imperative. In our study, we synthesized six unique mRNA vaccine formulations: the Receptor Binding Domain (RBD) monomer vaccine, RBD dimer (2RBD) vaccine, RBD-Ferritin (RBD-Fe) vaccine, ubiquitin-modified wild-type Nucleocapsid gene (WT-N) vaccine, rearranged Nucleocapsid gene (Re-N) vaccine, and an epitope-based (COVID-19 epitope) vaccine, all encapsulated within the lipid nanoparticle SM102. Immunization studies conducted on C57BL/6 mice with these vaccines revealed that the RBD monomer, RBD dimer (2RBD), and RBD-Fe vaccines elicited robust titers of specific antibodies, including neutralizing antibodies. In contrast, the wild-type N gene (WT-N), rearrange N gene (Re-N), and COVID-19 epitope vaccines predominantly induced potent cellular immune responses. Protective efficacy assays in golden hamsters demonstrated that vaccinated cohorts showed significant reduction in lung pathology, markedly lower viral loads in the lungs, nasal turbinates, and trachea, and substantially reduced transcriptional and expression levels of pro-inflammatory cytokines. Overall, our vaccine candidates pave the way for novel strategies in vaccine development against various infectious agents and establish a critical foundation for the formulation of advanced vaccines targeting emerging pathogens.
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Affiliation(s)
- Tong Yu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China; Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - ChenChao Zhang
- College of Agriculture, Yanbian University, Yanji, China
| | - JunHong Xing
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
| | - Tong Zhang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - ZhiQiang Xu
- College of Agriculture, Yanbian University, Yanji, China
| | - YaXin Di
- College of Veterinary Medicine, Northeast Agricultural University, Nanning, China
| | - SongHui Yang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - RenYue Jiang
- College of Agriculture, Yanbian University, Yanji, China
| | - JiaFeng Tang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - XinYu Zhuang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
| | - NingYi Jin
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
| | - MingYao Tian
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
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Liu H, Hu J, Li LX, Lu ZS, Sun XT, Lu HJ, Jin NY, Zhang L, Zhang LN. Seroepidemiological investigation of Getah virus in the China-Myanmar border area from 2022-2023. Front Microbiol 2023; 14:1309650. [PMID: 38163077 PMCID: PMC10755881 DOI: 10.3389/fmicb.2023.1309650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Getah Virus (GETV) is an RNA virus that is transmitted by mosquitoes and can cause disease or death in a variety of vertebrates. Its prevalence is increasingly severe in Asia. This study conducted a GETV epidemiological investigation on 1,300 bovine sera collected in the Honghe Prefecture of Yunnan Province on the China-Myanmar border from 2022 to 2023. The positive rate of GETV antibodies in bovine serum in Honghe Prefecture was determined to be 20.25% through indirect Enzyme-linked immunosorbent test (ELISA) methods. Using Real-time PCR methods to detect GETV RNA in bovine serum, the positive rate was 0.23% (3/1300), and viral nucleic acids were only detected in three bovine sera in Jianshui area in 2022. The YN2305 strain was successfully isolated from mouse neuroblastoma (N2a) cells and the complete gene sequence was obtained. All the above results indicate the existence of GETV infection in cattle in Honghe Prefecture, Yunnan Province. Homology and genetic evolution analysis found that the isolated strain has a high homology with the JL1808 strain isolated from cattle in 2018, with a nucleotide identity of 100%, and a nucleotide identity of 99.8% with the SD17-09 strain isolated from foxes in 2017. Compared with the nucleotides of 44 virus strains published in Genbank, YN2305 has multiple nucleotide site mutations in the structural gene E2 and non-structural gene NS. The nucleotide and amino acid identity of the E2 gene are 94.2-100% and 96.4-100%, respectively. Genetic evolution analysis found that this virus strain is most closely related to the bovine origin JL1808, and it is in gene group III with HuN1, Kochi-01, SD17-09, MI-110-C1, and MI-110-C2 strains that causes significant clinical symptoms in Chinese pig, fox and horse populations, belonging to the same evolutionary branch. This study determined the infection rate, genotype, and main prevalence areas of GETV in bovine sera in the China-Myanmar border area. Therefore, the epidemiological investigation of GETV infection in multiple animal hosts should be further expanded, and research on its pathogenicity and vectors should be carried out.
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Affiliation(s)
- Hao Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, China
| | - Jin Hu
- School of Life Sciences and Engineering, Foshan University, Foshan, China
| | - Li-Xia Li
- School of Life Sciences and Engineering, Foshan University, Foshan, China
| | - Zi-Shuo Lu
- School of Life Sciences and Engineering, Foshan University, Foshan, China
| | - Xiu-Tao Sun
- Honghe Animal Disease Prevention and Control Center, Mengzi, China
| | - Hui-Jun Lu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ning-Yi Jin
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Lei Zhang
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Li-Na Zhang
- Eco-Engineering Department, Guangdong Eco-Engineering Polytechnic, Guangzhou, China
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Liu H, Huang J, Lu ZS, Li LX, Liang XT, Tang T, Sun WC, Lu HJ, Jin NY, Bai X, Si XK. Isolation and characterization of a novel parvovirus from a red-crowned crane, China, 2021. BMC Vet Res 2023; 19:169. [PMID: 37735392 PMCID: PMC10512598 DOI: 10.1186/s12917-023-03683-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 08/02/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Parvoviruses are icosahedral, nonenveloped viruses with single-stranded DNA genomes of approximately 5 kb in length. In recent years, parvoviruses have frequently mutated and expanded their host range to cause disease in many wild animals by altering their tissue tropism. Animal infection mainly results in acute enteritis and inflammation of other organs. In this study, we used a viral metagenomic method to detect a novel parvovirus species in a red-crowned crane that died due to severe diarrhea in China. RESULTS The presence of the viral genome in the kidney, lung, heart, liver, and intestine were confirmed by PCR. Histopathological examination of the intestine showed a large number of infiltrated inflammatory cells. The JL21/10 strain of the red-crowned crane parvovirus was first isolated from the intestine. Whole-genome sequence analysis showed that JL21/10 shared high identity with the red-crowned crane Parvovirinae strains yc-8 at the nucleotide level (96.61%). Phylogenetic analysis of the complete genome and NS1 gene revealed that the JL21/10 strain clustered with strains in chicken and revealed a close genetic relationship with the red-crowned crane parvovirus strains.The complete of VP2 gene analysis showed that JL21/10 shared identity with the red-crowned crane yc-8 strains (97.7%), chicken (55.4%),ducks(31.0%) and geese(30.1%) at the amino acid level. The result showed that red-crowned crane parvovirus may be cross-species transmission to chicken. However, There is little possibility of transmission to ducks and geese. CONCLUSION This is the first isolation and identification of a parvovirus in red-crowned crane that was associated with severe diarrhea.
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Affiliation(s)
- Hao Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Jie Huang
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Zi-Shuo Lu
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Li-Xia Li
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Xiao-Tong Liang
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Tian Tang
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China
| | - Wen-Chao Sun
- Institute of Virology, Wenzhou University, 325035, Wenzhou, China
| | - Hui-Jun Lu
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, Jilin Province, China
| | - Ning-Yi Jin
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, Jilin Province, China
| | - Xue Bai
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin Province, China.
- Key Laboratory of Special Animal Epidemic Disease of Ministry of Agriculture and Rural Affairs, Institute of Special Animals and Plants, Chinese Academy of Agricultural Sciences, No. 4899 Juye Street, 130112, Changchun, Jilin province, China.
| | - Xing-Kui Si
- School of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, China.
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Zhang RR, Wang ZJ, Zhu YL, Tang W, Zhou C, Zhao SQ, Wu M, Ming T, Deng YQ, Chen Q, Jin NY, Ye Q, Li X, Qin CF. Rational development of multicomponent mRNA vaccine candidates against mpox. Emerg Microbes Infect 2023; 12:2192815. [PMID: 36947428 PMCID: PMC10071941 DOI: 10.1080/22221751.2023.2192815] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
The re-emerging mpox (formerly monkeypox) virus (MPXV), a member of Orthopoxvirus genus together with variola virus (VARV) and vaccinia virus (VACV), has led to public health emergency of international concern since July, 2022. Inspired by the unprecedent success of coronavirus disease 2019 (COVID-19) mRNA vaccines, the development of a safe and effective mRNA vaccine against MPXV is of high priority. Based on our established lipid nanoparticle (LNP)-encapsulated mRNA vaccine platform, we rationally constructed and prepared a panel of multicomponent MPXV vaccine candidates encoding different combinations of viral antigens including M1R, E8L, A29L, A35R and B6R. In vitro and in vivo characterization demonstrated that two immunizations of all mRNA vaccine candidates elicit a robust antibody response as well as antigen specific Th1-biased cellular response in mice. Importantly, the penta- and tetra-component vaccine candidates AR-MPXV5 and AR-MPXV4a showed superior capability of inducing neutralizing antibodies as well as of protecting from VACV challenge in mice. Our study provides critical insights to understand the protection mechanism of MPXV infection and direct evidence supporting further clinical development of these multicomponent mRNA vaccine candidates.
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Affiliation(s)
- Rong-Rong Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Zheng-Jian Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yi-Long Zhu
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
- Academicians Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Wei Tang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Chao Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Suo-Qun Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Mei Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Tao Ming
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yong-Qiang Deng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Qi Chen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Ning-Yi Jin
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Qing Ye
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Xiao Li
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Cheng-Feng Qin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
- Research Unit of Discovery and Tracing of Natural Focus Diseases, Chinese Academy of Medical Sciences, Beijing 100071, China
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Zhang JX, Xiao Y, Li YQ, Zhu YL, Li YR, Zhao RS, Jin NY, Fang JB, Li X, Han JC. Licochalcone A Induces Ferroptosis in Hepatocellular Carcinoma via Reactive Oxygen Species Activated by the SLC7A11/GPX4 Pathway. Integr Cancer Ther 2023; 22:15347354231210867. [PMID: 37965730 PMCID: PMC10647947 DOI: 10.1177/15347354231210867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 09/15/2023] [Accepted: 10/13/2023] [Indexed: 11/16/2023] Open
Abstract
Liver cancer is a common malignant tumor, and its incidence is increasing yearly. Millions of people suffer from liver cancer annually, which has a serious impact on global public health security. Licochalcone A (Lico A), an important component of the traditional Chinese herb licorice, is a natural small molecule drug with multiple pharmacological activities. In this study, we evaluated the inhibitory effects of Lico A on hepatocellular carcinoma cell lines (HepG2 and Huh-7), and explored the inhibitory mechanism of Lico A on hepatocellular carcinoma. First, we evaluated the inhibitory effects of Lico A on hepatocellular carcinoma, and showed that Lico A significantly inhibited and killed HepG2 and Huh-7 cells in vivo and in vitro. Transcriptomic analysis showed that Lico A inhibited the expression of solute carrier family 7 member 11 (SLC7A11), which induced ferroptosis. We confirmed through in vivo and in vitro experiments that Lico A promoted ferroptosis in hepatocellular carcinoma cells by downregulating SLC7A11 expression, thereby inhibiting the glutathione (GSH)-glutathione peroxidase 4 (GPX4) pathway and inducing activation of reactive oxygen species (ROS). In this study, we suggest that Lico A is a potential SLC7A11 inhibitor that induces ferroptotic death in hepatocellular carcinoma cells, thereby providing a theoretical basis for the development of natural small molecule drugs against hepatocellular carcinoma.
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Affiliation(s)
- Jin-Xin Zhang
- Changchun University of Science and Technology, Changchun, China
- Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yan Xiao
- Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yi-Quan Li
- Changchun University of Chinese Medicine, Changchun, China
| | - Yi-Long Zhu
- Changchun University of Chinese Medicine, Changchun, China
| | - Ya-Ru Li
- Changchun University of Chinese Medicine, Changchun, China
| | | | - Ning-Yi Jin
- Chinese Academy of Agricultural Sciences, Changchun, China
- Changchun University of Chinese Medicine, Changchun, China
| | - Jin-Bo Fang
- Changchun University of Chinese Medicine, Changchun, China
| | - Xiao Li
- Changchun University of Science and Technology, Changchun, China
- Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ji-Cheng Han
- Chinese Academy of Agricultural Sciences, Changchun, China
- Changchun University of Chinese Medicine, Changchun, China
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Xie CZ, Tao YM, Ha Z, Zhang P, Zhang Y, Zhang H, Jin NY, Lu HJ. Characterization of a new NSP2-deletion NADC34-Like Porcine Reproductive and Respiratory Syndrome Virus in China. Res Vet Sci 2022; 152:212-218. [PMID: 35998397 DOI: 10.1016/j.rvsc.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 06/29/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022]
Abstract
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) is the causative agent of Porcine Reproductive and Respiratory Syndrome (PRRS), which has caused huge economic losses to the pig industry worldwide. PRRSV NADC34-Like PRRSV 2020-Acheng-1 strain, which caused high morbidity and high mortality were isolated from dead piglets (high-throughput sequencing to show that only PRRSV and TGEV) on a farm in northeastern China. The full-length genome sequence of 2020-Acheng-1 shares 95.6% nucleotide homology with NADC34 PRRSV without any gene insertion, but has a unique 17 amino acid (469aa to 486aa) deletion in Nsp2 compared with all NADC34-Like strains in NCBI and there are unique 100 amino acid deletions. In addition, difference degree of changes in signal peptide, trans-membrane region (TM), main neutralizing epitope (PNE), non-neutralizing epitope and N-glycosylation site were observed in GP5 of 2020-Acheng-1 and other PRRSV-2 strains, we only found a change in the fifteenth amino acid of signal peptide of in GP5 of 2020-Acheng-1 with NADC34 strains. Recombination analysis showed that 2020-Acheng-1 strain did not have any recombination events with representative PRRSV-2 strains in China. This study provided valuable evidence for understanding the role of NADC34-Like strain that impact on pathogenicity.
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Affiliation(s)
- Chang-Zhan Xie
- Chinese Academy of Agricultural Sciences, Changchun Veterinary Research Institute, Changchun, China
| | - Yi-Mo Tao
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zhuo Ha
- Chinese Academy of Agricultural Sciences, Changchun Veterinary Research Institute, Changchun, China
| | - Ping Zhang
- Institute of specialty, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ying Zhang
- College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun 130062, China
| | - He Zhang
- Chinese Academy of Agricultural Sciences, Changchun Veterinary Research Institute, Changchun, China
| | - Ning-Yi Jin
- Chinese Academy of Agricultural Sciences, Changchun Veterinary Research Institute, Changchun, China; College of Animal Science and Technology, Guangxi University, Nanning, China; College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun 130062, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China.
| | - Hui-Jun Lu
- Chinese Academy of Agricultural Sciences, Changchun Veterinary Research Institute, Changchun, China; College of Animal Science and Technology, Guangxi University, Nanning, China; College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun 130062, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China.
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Hou J, Mi X, Liu N, Li X, Li XN, Yang Y, Lu X, Fang Y, Jin NY. MiR-199a/b-3p inhibits colorectal cancer cell proliferation, migration and invasion through targeting PAK4 and BCAR3. Eur J Med Res 2022; 27:121. [PMID: 35842733 PMCID: PMC9287867 DOI: 10.1186/s40001-022-00750-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 07/01/2022] [Indexed: 12/24/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the leading causes of cancer-related death worldwide. P21 activated kinase 4 (PAK4) and Breast cancer anti-estrogen resistance 3 (BCAR3) have been reported to be involved in numerous aspects in tumorous progression. In this study, we propose to screen multi-targeted microRNAs. (miRNAs), which simultaneously inhibit neoplastic evolution through suppressing the transcription of target genes. Methods MTT and Colony formation assays measured cell’s viability and proliferation. Scratch wound and Transwell assays detected the ability in migration and invasion for SW116 cells. The multi-targeted microRNAs of PAK4 and BCAR3 were predicted using bioinformatics analysis and verified by conducting dual luciferase reporter assay, western blot and qRT-PCR that could detect the expression levels of miR-199a/b-3p. Results The knockdown of PAK4 significantly impeded proliferation and colony formation of SW1116 cells when the knockdown of BCAR3 hindered migration and invasion of SW1116 cells. MiR-199a/b-3p directly targeted the 3'-UTR of PAK4 and BCAR3, further effected proliferation, colony formation, migration, and invasion of SW1116 cells. PAK4 or BCAR3 overexpression could partially reversed inhibitory effects of miR-199a/b-3p. Conclusions These results provided a new multi-targeted cite for cancerous suppressant to improve the prognosis of CRC inpatients.
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Affiliation(s)
- Junjie Hou
- Medical College, Yanbian University, Yanji, 133002, China.,Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Xuguang Mi
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Ning Liu
- General Surgery of The First Clinical Hospital of Jilin Academy of Chinese Medicine Sciences, Changchun, China
| | - Xiaonan Li
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Xiao-Nan Li
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Ying Yang
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Xiaodan Lu
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Yanqiu Fang
- Tumor Biotherapy Center, Jilin Province People's Hospital, Changchun, China
| | - Ning-Yi Jin
- Medical College, Yanbian University, Yanji, 133002, China. .,Changchun Institute of Veterinary Medicine, Chinese Academy of Agricultural Sciences, Changchun, China.
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Hou J, Lin Y, Fang Y, Li X, Li XN, Yang Y, Liu N, Jiang X, Yu Y, Zhou Y, Mi X, Ni Z, Lu X, Jin NY. Clinical efficacy evaluation and prevention of adverse reactions in a randomized trial of a combination of three drugs in the treatment of cancerous pudendal neuralgia. Ann Palliat Med 2021; 10:5754-5762. [PMID: 33977736 DOI: 10.21037/apm-21-590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND To explore the clinical efficacy, safety, and prevention of major adverse reactions of the non-steroidal anti-inflammatory drug celecoxib combined with OxyContin and Pregabalin in the treatment of cancerous pudendal neuralgia. METHODS A total of 51 patients presenting with pelvic malignancies with cancerous pudendal neuralgia were selected, and random number table method was used to allocate them to either the experimental group (n=27) or control group (n=24). The control group was treated with OxyContin combined with Pregabalin, and the experimental group was treated with Celecoxib on the basis of the control group. RESULTS At 24 hours after treatment, the clinical effective rate of the experimental group was 92.6%, which was significantly higher than the 66.7% of the control group (P<0.05). The numerical rating scale (NRS) scores of the 2 groups of participants on the 7th and 14th days after treatment were lower than before treatment (P<0.05), and the NRS scores of the participants in the experimental group had decreased more significantly. At the same time, the average daily consumption of OxyContin on the 7th and 14th day of the experimental group was lower than that of the control group (P<0.05). Compared with the control group, the incidence of constipation and dysuria in the experimental group was significantly reduced (P<0.05). Co-occurring in both groups during treatment, 10 participants with urinary dysfunction were treated with tamsulosin hydrochloride sustained-release capsules, no urinary retention occurred, catheterization was avoided, tamsulosin hydrochloride sustained-release capsules could be stopped after 1 week, and urination was smooth (P<0.05). After treatment, the quality of life of the 2 groups of participants had improved compared to before treatment, and the improvement was more significant in the experimental group. CONCLUSIONS When treating patients with cancerous pudendal neuralgia with OxyContin and Pregabalin, the addition of celecoxib has a significant effect, which can effectively improve the patient's pain, improve their quality of life to a certain extent, and reduce the consumption of OxyContin. Lowering the dose of OxyContin reduces the occurrence of adverse reactions related to the drug, especially the incidence of constipation and urinary retention. Tamsulosin hydrochloride sustained-release capsules can effectively relieve urinary disorders caused by OxyContin. TRIAL REGISTRATION Chinese Clinical Trial Registry ChiCTR2100046045.
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Affiliation(s)
- Junjie Hou
- Medical College, Yanbian University, Yanji, China; Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Yifan Lin
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Yanqiu Fang
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Xiaonan Li
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Xiao-Nan Li
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Ying Yang
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Ning Liu
- General Surgery of The First Clinical Hospital of Jilin Academy of Chinese Medicine Sciences, Changchun, China
| | - Xianzhuo Jiang
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Yingying Yu
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Ying Zhou
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Xuguang Mi
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Zhiqiang Ni
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Xiaodan Lu
- Department of Comprehensive Oncology, Jilin Province People's Hospital, Changchun, China
| | - Ning-Yi Jin
- Medical College, Yanbian University, Yanji, China; Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, China
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Shang C, Zhu YL, Li YQ, Song GJ, Ge CC, Lu J, Xiu ZR, Li WJ, Li SZ, Cong JN, Liu ZR, Li X, Sun LL, Jin NY. Autophagy promotes oncolysis of an adenovirus expressing apoptin in human bladder cancer models. Invest New Drugs 2021; 39:949-960. [PMID: 33534026 DOI: 10.1007/s10637-021-01073-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/25/2021] [Indexed: 11/26/2022]
Abstract
As a potential cancer therapy, we developed a recombinant adenovirus named Ad-VT, which was designed to express the apoptosis-inducing gene (apoptin) and selectively replicate in cancer cells via E1a manipulation. However, how it performs in bladder cancer remains unclear. We examined the antitumor efficacy of Ad-VT in bladder cancers using CCK-8 assays and xenograft models. Autophagy levels were evaluated by western blotting, MDC staining, and RFP-GFP-LC3 aggregates' analyses. Here, we report the selective replication and antitumor efficacy (viability inhibition and apoptosis induction) of Ad-VT in bladder cancer cells. Using xenograft tumor models, we demonstrate that its effects are tumor specific resulting in the inhibition of tumor growth and improvement of the survival of mice models. Most Importantly, Ad-VT induced a complete autophagy flux leading to autophagic cancer cell death through a signaling pathway involving AMPK, raptor and mTOR. Finally, we suggest that treatment combination of Ad-VT and rapamycin results in a synergistic improvement of tumor control and survival compared to monotherapy. This study suggests that Ad-VT can induce selective autophagic antitumor activities in bladder cancer through the AMPK-Raptor-mTOR pathway, which can be further improved by rapamycin.
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Affiliation(s)
- Chao Shang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China
| | - Yi-Long Zhu
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China
| | - Yi-Quan Li
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China
| | - Gao-Jie Song
- Medical College, Yanbian University, Yanji, 133002, People's Republic of China
| | - Chen-Chen Ge
- Medical College, Yanbian University, Yanji, 133002, People's Republic of China
| | - Jing Lu
- Medical College, Yanbian University, Yanji, 133002, People's Republic of China
| | - Zhi-Ru Xiu
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China
| | - Wen-Jie Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China
| | - Shan-Zhi Li
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China
| | - Jia-Nan Cong
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China
| | - Zi-Rui Liu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China
| | - Xiao Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China.
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China.
- Medical College, Yanbian University, Yanji, 133002, People's Republic of China.
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, People's Republic of China.
| | - Li-Li Sun
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China.
- Department of Head and Neck Surgery, Tumor Hospital of Jilin Province, Changchun, 130012, People's Republic of China.
| | - Ning-Yi Jin
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Liuying west road, 666, Jingyue Economic & Technological Development Zone, Changchun, Jilin, 130122, People's Republic of China.
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, 130021, People's Republic of China.
- Medical College, Yanbian University, Yanji, 133002, People's Republic of China.
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, People's Republic of China.
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10
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Xie CZ, Wang Z, Ha Z, Zhang Y, Xie YB, Zhang H, Nan FL, Zhang JY, Zhao GY, Li ZX, Li CH, Yu CD, Zhang P, Jin NY. Genetic characterization of a new NSP2-deletion porcine reproductive and Respiratory Syndrome Virus in China. Microb Pathog 2021; 150:104729. [PMID: 33429053 DOI: 10.1016/j.micpath.2021.104729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/29/2020] [Accepted: 01/03/2021] [Indexed: 11/19/2022]
Abstract
The Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) cause a huge economic loss around the pig industry worldwide; the NADC30-like PRRSV have attracted much attention outbreaks in China in recent years. Recombination between PRRSV subtypes, point mutations, insertions and deletions that contribute to the emergence of new variants in the genome. In this study, the PRRSV-HB-16-China-2019 strain's full-length genomic sequence shares 93.0% nucleotide similarity to NADC30 PRRSV without any gene insertion. Compared with VR-2332, it has an NSP2 coding region that is different from NADC30, which has a discontinuous 206-aa (111-aa from position 323 to 433 and 95-aa from position 476 to 570) deletion. Compared with other NADC30-Like strains, it has a discontinuous 75-amino acid (75-aa from position 476 to 552) deletion, which was first reported. Notably, the strain, PRRSV-HB-16-China-2019, contained an addition a 1-aa deletion in ORF5 and a unique 3-nt deletion in 3'-UTR similar to NADC30, the strain is recombined between a NADC30-like strain and a vaccine strain named RespPRRS MLV(parental strain VR-2332). Our findings indicate that PRRSV-HB-16-China-2019 is a new NSP2-deletion NADC30-like strain with certain deletions and mutations. Our results show that the emergence of the new NADC30-like strain has increased the difficulty of PRRSV prevention in China.
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Affiliation(s)
- Chang-Zhan Xie
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Zheng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China; College of Agriculture, Yanbian University, Yanbian, Jilin, 133002, China
| | - Zhuo Ha
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ying Zhang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Yu-Biao Xie
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - He Zhang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Fu-Long Nan
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Jin-Yong Zhang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Guan-Yu Zhao
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Zhuo-Xin Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Cheng-Hui Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Cheng-Dong Yu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ping Zhang
- Institute of Specialty, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ning-Yi Jin
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, China; College of Agriculture, Yanbian University, Yanbian, Jilin, 133002, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China.
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11
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Xie CZ, Ha Z, Zhang H, Zhang Y, Xie YB, Zhang H, Nan FL, Wang Z, Zhang P, Xu W, Han JC, Wen SB, Lu HJ, Jin NY. Pathogenicity of porcine reproductive and respiratory syndrome virus (ORF5 RFLP 1-7-4 viruses) in China. Transbound Emerg Dis 2020; 67:2065-2072. [PMID: 32187856 DOI: 10.1111/tbed.13549] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 11/30/2022]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is an RNA virus that causes reproductive failure in sows and respiratory problems in piglets. PRRSV infection leads to substantial pig mortality and causing huge economic losses so that disease outbreaks caused by the new PRRSV strain from other regions have caused great concern in China. In this study, we analysed the pathogenicity of the novel ORF5 RFLP 1-7-4-like PRRSV strain, named PRRSV-ZDXYL-China-2018-1 in pigs. The viral challenge test showed that PRRSV-ZDXYL-China-2018-1 infection can cause persistent fever, moderate dyspnoea, serum viraemia and interstitial pneumonia in piglets. The levels of viral loads in serum and PRRSV-specific antigen were also detected in lung tissues were used one-step Taq-Man RT-qPCR and Immunohistochemistry, respectively. At 28dpi, the level of specific antibodies was increased among infected piglets. Importantly, the new virus appeared be a moderately virulent isolate with pathogenicity compared to HP-PRRSV strain LQ (JXA1-like strain). Histological examination revealed severe monocyte haemorrhage and interstitial pneumonia associated with monocyte infiltration in the lung tissue of pigs infected with PRRSV-ZDXYL-China-2018-1 and LQ-JXA1 strains. Immunohistochemistry (IHC) results showed positive brown-red epithelial cells and macrophages in pig lungs. Therefore, it is critical to establish an effective strategy to control the spread of PRRSV in China.
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Affiliation(s)
- Chang-Zhan Xie
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Zhuo Ha
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Han Zhang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ying Zhang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Yu-Biao Xie
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - He Zhang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Fu-Long Nan
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Zheng Wang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ping Zhang
- Institute of specialty, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Wang Xu
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Ji-Cheng Han
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
| | - Shu-Bo Wen
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, China
| | - Hui-Jun Lu
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China
| | - Ning-Yi Jin
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China
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12
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Zhang Y, Han JC, Jing J, Liu H, Zhang H, Li ZH, Jin NY, Lu HJ. Construction and Immunogenicity of Recombinant Vaccinia Virus Vaccine Against Japanese Encephalitis and Chikungunya Viruses Infection in Mice. Vector Borne Zoonotic Dis 2020; 20:788-796. [PMID: 32584657 DOI: 10.1089/vbz.2020.2613] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Japanese encephalitis virus (JEV) is recognized as a public health risk by the World Health Organization. In Asia, each year, ∼70,000 people become infected with JEV, which results in ∼10,000 deaths. Chikungunya virus (CHIKV) is an RNA virus, whose infection mainly causes fever, myalgia, and skin rash. Although the mortality rate is low, it seriously affects daily life. JEV and CHIKV infect humans through mosquitoes; therefore, a recombinant vaccinia virus coexpressing JEV E and CHIKV E1 proteins was constructed to prevent their concurrent infection. In this study, after mice first immunization, booster immunization was performed at 21 days postimmunization (dpi). At 35 dpi, mice were challenged with JEV and CHIKV. Specific antibodies significantly increased in the rVTT-CE1-JE-EGFP group, which were significantly (p < 0.01) higher than those of the control groups at 35 dpi. The plaque reduction neutralization tests (JEV) of rVTT-CE1-JE-EGFP group was 1:320 at 35 dpi. Furthermore, cytokine levels and the percentage of CD3+CD4+ and CD3+CD8+ T-lymphocytes in the rVTT-CE1-JE-EGFP group were significantly (p < 0.01) higher than those in the control groups at 35 dpi. After challenge, mice body weights in rVTT-CE1-JE-EGFP group were not significantly altered, and the survival rate was 100%. These results showed the rVTT-CE1-JE-EGFP group elicited significant humoral and cellular immune responses, thus indicating that the recombinant vaccine may serve as a candidate for effective prevention of CHIKV and JEV infection.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, People's Republic of China
| | - Ji-Cheng Han
- Institute of Military Veterinary, Academy of Military Sciences, Changchun, People's Republic of China.,Changchun University of Chinese Medicine, Changchun, People's Republic of China
| | - Jie Jing
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, People's Republic of China.,Institute of Military Veterinary, Academy of Military Sciences, Changchun, People's Republic of China
| | - Hao Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, People's Republic of China
| | - He Zhang
- Institute of Military Veterinary, Academy of Military Sciences, Changchun, People's Republic of China
| | - Zhao-Hui Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, People's Republic of China
| | - Ning-Yi Jin
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, College of Animal Science, Jilin University, Changchun, People's Republic of China.,Institute of Military Veterinary, Academy of Military Sciences, Changchun, People's Republic of China
| | - Hui-Jun Lu
- Institute of Military Veterinary, Academy of Military Sciences, Changchun, People's Republic of China
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13
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Ha Z, Li JF, Xie CZ, Li CH, Zhou HN, Zhang Y, Hao PF, Nan FL, Zhang JY, Han JC, Zhang H, Zhuang XY, Guo YC, Lu HJ, Jin NY. First detection and genomic characterization of porcine circovirus 3 in mosquitoes from pig farms in China. Vet Microbiol 2019; 240:108522. [PMID: 31902486 DOI: 10.1016/j.vetmic.2019.108522] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/21/2019] [Accepted: 11/21/2019] [Indexed: 12/31/2022]
Abstract
The porcine circovirus type 3 (PCV3) becomes an important causative agent of swine disease since its discovery in 2016. PCV3 infection exhibits a wide range of clinical syndromes causing substantial economic losses in swine industry. Previous studies have reported the detection of numerous known viruses including circovirus in mosquitoes. However, the transmission of PCV3 in field-caught mosquitoes remains largely unknown. This study aims to detect PCV3 infection in mosquitoes and analyze its genomic characteristics. Here, we performed a PCR to detect the PCV3 in 269 mosquito samples collected from pig farms located in Heilongjiang, Jilin, and Yunnan provinces. The proportion of PCV3-positive mosquitoes was 32.0 % (86/269), ranging from 21.4%-42.5% at farm level, which may imply that mosquito serves as a route of transmission for PCV3. To determine the possible origin of PCV3 in mosquitoes, 80 pig serum samples were collected from the pig farms where mosquito sampling was also performed. The proportion of PCV3-positive farms ranged from 15.0%-30.0 % in which infection of positive pigs positively correlated with mosquitoes carrying the virus. Additionally, we sequenced the entire genome of 6 strains of PCV3 in mosquitoes and 2 strains of PCV3 in pigs. Sequence analysis indicated a 100 % nucleotide similarity between mosquito and pig viral isolates that were all collected from similar farms. Phylogenetic analysis showed that PCV3 could be divided into two clades, PCV3a and PCV3b, and the PCV3 strains isolated in mosquitoes were distributed on the two clades. Our results demonstrate that mosquitoes may serve as a potential transmission vector in the life-cycle of PCV3, revealing possible transmission routes of PCV3.
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Affiliation(s)
- Zhuo Ha
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Jin-Feng Li
- College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - Chang-Zhan Xie
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Cheng-Hui Li
- Medical College, Yanbian University, Yanji, 133002, China
| | | | - Ying Zhang
- College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - Peng-Fei Hao
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - Fu-Long Nan
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - Jin-Yong Zhang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Ji-Cheng Han
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; Medical College, Yanbian University, Yanji, 133002, China
| | - He Zhang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China
| | - Xin-Yu Zhuang
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China
| | - Ying-Cheng Guo
- Jilin Fengman Area Animal Prevention and Control Center, Jilin, 132013, China
| | - Hui-Jun Lu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, 225009, China.
| | - Ning-Yi Jin
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, 130122, China; College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, 225009, China.
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14
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Liu H, Zhang X, Li LX, Shi N, Sun XT, Liu Q, Jin NY, Si XK. First isolation and characterization of Getah virus from cattle in northeastern China. BMC Vet Res 2019; 15:320. [PMID: 31488162 PMCID: PMC6729113 DOI: 10.1186/s12917-019-2061-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/25/2019] [Indexed: 11/30/2022] Open
Abstract
Background Getah virus (GETV) is a neglected mosquito-borne Alphavirus that causes pyrexia, body rash, and leg oedema in horses and foetal death and reproductive disorders in pigs. Infected animals may play a critical role in the amplification and circulation of the virus. The present study aimed to investigate GETV infection in clinically infected cattle and vector mosquito species in northeastern China. Results Serum samples were collected from beef cattle that presented sudden onset of fever in forest grazing areas, and metagenomic sequencing was conducted, revealing 29 contigs from ten serum samples matching the GETV genome. Quantitative RT-PCR (RT-qPCR) was performed with GETV RNA from 48 beef cattle serum samples, showing that the overall prevalence of GETV in the beef cattle samples was 6.25% (3/48). Serological investigation indicated that GETV neutralizing antibodies were detected in 83.3% (40/48, 95% CI 67–100) of samples from the study region. The GETV JL1808 strain was isolated from clinically infected cattle showing fever. Sequence comparisons showed high identity with the HuN1 strain, a highly pathogenic swine epidemic isolate obtained in Hunan province in 2017, at the nucleotide level (99.5%) and at the deduced amino acid level (99.7–99.9%). The phylogenetic analysis of JL1808 clustered in Group III, and also revealed a close genetic relationship with the HuN1 strain. Additionally, about 12,000 mosquitoes were trapped in this region. The presence of GETV infection was detected in mosquitoes, suggesting that the minimum infection rate (MIR) was 1.50‰, with MIRs of 1.67‰ in Culex pseudovishnui, 1.60‰ in Culex tritaeniorhynchus, and 1.21‰ in Anopheles sinensis. Conclusions To the best of our knowledge, this is the first report of GETV infection in cattle. These results demonstrated that a highly pathogenic, mosquito-borne swine GETV can infect and circulate in cattle, implying that it is necessary to conduct surveillance of GETV infection in animals in northeastern China. Electronic supplementary material The online version of this article (10.1186/s12917-019-2061-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hao Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China
| | - Xu Zhang
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China
| | - Li-Xia Li
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China.,Forestry Department of Jilin Province, Jilin Wildlife Rescue and Rehabilitation Center, Changchun, 130122, Jilin Province, China
| | - Ning Shi
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China
| | - Xiu-Tao Sun
- Honghe Animal Disease Prevention and Control Center, Mengzi, 661000, Yunnan Province, China
| | - Quan Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China
| | - Ning-Yi Jin
- Military Veterinary Institute, Academy of Military Medical Sciences, Changchun, 130122, Jilin Province, China
| | - Xing-Kui Si
- School of Life Sciences and Engineering, Foshan University, Foshan, 528000, Guangdong Province, China.
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15
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Liu H, Li LX, Bu YP, Liu Y, Sun XT, Shi N, Deng XY, Lu RG, Hu B, Jin NY, Yan XJ. Rapid Visual Detection of Getah Virus Using a Loop-Mediated Isothermal Amplification Method. Vector Borne Zoonotic Dis 2019; 19:741-746. [PMID: 30964395 DOI: 10.1089/vbz.2018.2434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Getah virus (GETV) is a mosquito-borne alphavirus that is considered to be an emerging pathogen. To date, reverse transcription loop-mediated isothermal amplification (RT-LAMP) has not been used to detect GETV. Therefore, we describe a novel, fast, and sensitive LAMP method to detect GETV. Amplification of GETV RNA can be obtained within 50 min at 65°C. This RT-LAMP method was verified to be highly specific for GETV, with no cross detection of other viruses. The assay was 103 and 101 times more sensitive than RT-PCR and RT-qPCR, respectively, for the detection of GETV RNA. This novel RT-LAMP method provides a practical and economical alternative for detecting GETV in mosquitoes and serum samples that can be used even in the field.
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Affiliation(s)
- Hao Liu
- School of Life Sciences and Engineering, Foshan University, Foshan, China
| | - Li-Xia Li
- Forestry Department of Jilin Province, Jilin Wildlife Rescue and Rehabilitation Center, Changchun, China
| | - Ya-Ping Bu
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
| | - Yu Liu
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, China
| | - Xiu-Tao Sun
- Honghe Animal Disease Prevention and Control Center, Mengzi, China
| | - Ning Shi
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Xiao-Yu Deng
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Rong-Guang Lu
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Bo Hu
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Ning-Yi Jin
- Military Veterinary Institute, Academy of Military Medical Sciences, Changchun, China
| | - Xi-Jun Yan
- Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
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16
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Chen S, Li YQ, Yin XZ, Li SZ, Zhu YL, Fan YY, Li WJ, Cui YL, Zhao J, Li X, Zhang QG, Jin NY. Recombinant adenoviruses expressing apoptin suppress the growth of MCF‑7 breast cancer cells and affect cell autophagy. Oncol Rep 2019; 41:2818-2832. [PMID: 30896879 PMCID: PMC6448129 DOI: 10.3892/or.2019.7077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 02/25/2019] [Indexed: 12/15/2022] Open
Abstract
Autophagy and apoptosis both promote cell death; however, the relationship between them is subtle, and they mutually promote and antagonize each other. Apoptin can induce apoptosis of various tumor cells; however, tumor cell death is not only caused by apoptosis. Whether apoptin affects tumor cell autophagy is poorly understood. Therefore, the present study aimed to explore the potential mechanisms underlying the effects of apoptin using recombinant adenoviruses expressing apoptin. Reverse transcription-quantitative polymerase chain reaction, immunoblotting, flow cytometry, fluorescence microscopy and proteomics analyses revealed that apoptin could induce autophagy in MCF-7 breast cancer cells. The results also suggested that apoptin affected autophagy in a time- and dose-dependent manner. During the early stage of apoptin stimulation (6 and 12 h), the expression levels of autophagy pathway-associated proteins, including Beclin-1, microtubule-associated protein 1A/1B-light chain 3, autophagy-related 4B cysteine peptidase and autophagy-related 5, were significantly increased, suggesting that apoptin promoted the upregulation of autophagy in MCF-7 cells. Conversely, after 12 h of apoptin stimulation, the expression levels of apoptosis-associated proteins were decreased, thus suggesting that apoptosis may be inhibited. Therefore, it was hypothesized that apoptin may enhance autophagy and inhibit apoptosis in MCF-7 cells at the early stage. In conclusion, apoptin-induced cell death may involve both autophagy and apoptosis. The induction of autophagy may inhibit apoptosis, whereas apoptosis may inhibit autophagy; however, occasionally both pathways operate at the same time and involve apoptin. This apoptin-associated selection between tumor cell survival and death may provide a potential therapeutic strategy for breast cancer.
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Affiliation(s)
- Shuang Chen
- Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Yi-Quan Li
- Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Xun-Zhe Yin
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Shan-Zhi Li
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Yi-Long Zhu
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Yuan-Yuan Fan
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Wen-Jie Li
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Ying-Li Cui
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Jin Zhao
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Xiao Li
- Laboratory of Molecular Virology and Immunology, Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, Jilin 130122, P.R. China
| | - Qing-Gao Zhang
- Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Ning-Yi Jin
- Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
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Cui CX, Li YQ, Sun YJ, Zhu YL, Fang JB, Bai B, Li WJ, Li SZ, Ma YZ, Li X, Wang WH, Jin NY. Antitumor effect of a dual cancer-specific oncolytic adenovirus on prostate cancer PC-3 cells. Urol Oncol 2019; 37:352.e1-352.e18. [PMID: 30665692 DOI: 10.1016/j.urolonc.2018.12.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/21/2018] [Accepted: 12/16/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE Apoptin can specifically kill cancer cells but has no toxicity to normal cells. Human telomerase reverse transcriptase (hTERT) acts as a tumor-specific promoter, triggering certain genes to replicate or express only in tumor cells, conferring specific replication and killing abilities. This study aimed to investigate the anticancer potential of the recombinant adenovirus Ad-apoptin-hTERTp-E1a (Ad-VT) in prostate cancer. METHODS The pGL4.51 plasmid was used to transfect PC-3 cells to construct tumor cells stably expressing luciferase (PC-3-luc). Crystal violet staining and MTS assays determined the ability of Ad-VT to inhibit cell proliferation. Ad-VT-induced apoptosis of PC-3-luc cells was detected using Hoechst, Annexin V, JC-1 staining, and caspases activity analysis. PC-3-luc cells invasion and migration were detected using cell-scratch and Transwell assays. In vivo tumor inhibition was detected using imaging techniques. RESULTS Crystal violet staining and MTS results showed that the proliferation ability of PC-3-luc cells decreased significantly. Hoechst, JC-1, and Annexin V experiments demonstrated that Ad-VT mainly induced apoptosis to inhibit PC-3-luc cell proliferation. Ad-VT could significantly inhibit the migration and invasion of PC-3-luc cells over a short period of time. In vivo, Ad-VT could effectively inhibit tumor growth and prolong survival of the mice. CONCLUSIONS The recombinant adenovirus, comprising the apoptin protein and the hTERTp promoter, was able to inhibit the growth of prostate cancer PC-3 cells and promote their apoptosis.
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Affiliation(s)
- Chuan-Xin Cui
- Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P. R. China; Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China
| | - Yi-Quan Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China
| | - Yu-Jia Sun
- Department of Operating Room, The Second Hospital of Jilin University, Changchun, Jilin, P. R. China
| | - Yi-Long Zhu
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China
| | - Jin-Bo Fang
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China
| | - Bing Bai
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China
| | - Wen-Jie Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Jiang su Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P. R. China
| | - Shan-Zhi Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China
| | - Yi-Zhen Ma
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Jiang su Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P. R. China
| | - Xiao Li
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China; Jiang su Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P. R. China.
| | - Wei-Hua Wang
- Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P. R. China; Department of Urology Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P. R. China.
| | - Ning-Yi Jin
- Institute of Military Veterinary Medicine, Academy of Military Medical Science, Changchun, P. R. China; Changchun University of Chinese Medicine, Changchun, P. R. China; Jiang su Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, P. R. China.
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18
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Ha Z, Xie CZ, Li JF, Wen SB, Zhang KL, Nan FL, Zhang H, Guo YC, Wang W, Lu HJ, Jin NY. Molecular detection and genomic characterization of porcine circovirus 3 in pigs from Northeast China. BMC Vet Res 2018; 14:321. [PMID: 30367641 PMCID: PMC6203981 DOI: 10.1186/s12917-018-1634-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/28/2018] [Indexed: 12/30/2022] Open
Abstract
Background First identified in the United States in 2016, porcine circovirus type 3 (PCV3) is a newly emerging porcine circovirus exhibiting a wide range of clinical syndromes, which may be associated with the pathogenicity observed in pigs. Results The aim of this study was to identify and characterize the full genome sequence of PCV3 strains circulating in Northeast China. Herein, 105 lung samples isolated from sick pigs in Northeast China during 2018 were analyzed for PCV3. Using PCR, the total PCV3-positive rate was 33.3% (35/105), with rates of 17.8% (8/45), 66.7% (10/15), and 37.8% (17/45) in Heilongjiang, Jilin, and Liaoning province, respectively. Additionally, our findings showed that PCV3-positive samples had a high rate of co-infection with PCV2, PPV6, and PPV7. To study the evolution of the PCV3 in Northeast China, we sequenced the entire genome of 13 strains of PCV3. The results of phylogenetic analyses revealed that PCV3 could be divided into two clades, PCV3a and PCV3b. Interestingly, a G deletion at position 1072 was found in the 1999 nt genome of PCV3-CN2018LN-4 (MH277118). The G deletion terminated replicase protein translation and induced a truncated replicase protein. Conclusion These results contribute to the understanding of PCV3 molecular epidemiology and evolution in Northeast China. A new strain of PCV3 with truncated replicase protein was identified.
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Affiliation(s)
- Zhuo Ha
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Chang-Zhan Xie
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Jin-Feng Li
- College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - Shu-Bo Wen
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China
| | - Ke-Long Zhang
- College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Fu-Long Nan
- College of Veterinary Medicine, Jilin University, Changchun, 130012, China
| | - He Zhang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China
| | - Ying-Cheng Guo
- Jilin Fengman area Animal Prevention and Control Center, Jilin, 132013, China
| | - Wei Wang
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, 225009, China
| | - Hui-Jun Lu
- Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China. .,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, 225009, China.
| | - Ning-Yi Jin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China. .,Institute of Military Veterinary medicine, Academy of Military Medical Sciences, Changchun, 130122, China. .,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, 225009, China.
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19
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Ren JQ, Sun WC, Lu HJ, Wen SB, Jing J, Yan FL, Liu H, Liu CX, Xiao PP, Chen X, Du SW, Du R, Jin NY. Construction and immunogenicity of a DNA vaccine coexpressing GP3 and GP5 of genotype-I porcine reproductive and respiratory syndrome virus. BMC Vet Res 2014; 10:128. [PMID: 24916952 PMCID: PMC4090398 DOI: 10.1186/1746-6148-10-128] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 05/28/2014] [Indexed: 11/21/2022] Open
Abstract
Background The European (EU) genotype of porcine reproductive and respiratory syndrome virus (Genotype-I PRRSV) has recently emerged in China. The coexistence of Genotype-I and -II PRRSV strains could cause seriously affect PRRSV diagnosis and management. Current vaccines are not able to protect against PRRSV infection completely and have inherent drawbacks. Thus, genetically engineered vaccines, including DNA vaccine and live vector engineered vaccines, have been developed. This study aimed to determine the enhanced immune responses of mice inoculated with a DNA vaccine coexpressing GP3 and GP5 of a Genotype-I PRRSV. Results To evaluate the immunogenicity of GP3 and GP5 proteins from European-type PRRSV, three DNA vaccines, pVAX1-EU-ORF3-ORF5, pVAX1-EU-ORF3 and pVAX1-EU-ORF5, were constructed, which were based on a Genotype-I LV strain (GenBank ID: M96262). BALB/c mice were immunized with the DNA vaccines; delivered in the form of chitosan-DNA nanoparticles. To increase the efficiency of the vaccine, Quil A (Quillaja) was used as an adjuvant. GP3 and GP5-specific antibodies, neutralizing antibodies and cytokines (IL-2, IL-4, IL-10 and IFN gamma) from the immunized mice sera, and other immune parameters, were examined, including T-cell proliferation responses and subgroups of spleen T-lymphocytes. The results showed that ORF3 and ORF5 proteins of Genotype-I PRRSV induced GP3 and GP5-specific antibodies that could neutralize the virus. The levels of Cytokines IL-2, IL-4, IL-10, and IFN–γ of the experimental groups were significantly higher than those of control groups after booster vaccination (P < 0.05). The production of CD3+CD4+ and CD3+CD8+ T lymphocyte was also induced. T lymphocyte proliferation assays showed that the PRRSV LV strain virus could stimulate the proliferation of T lymphocytes in mice in the experimental group. Conclusions Using Quil A as adjuvant, Genotype-I PRRSV GP3 and GP5 proteins produced good immunogenicity and reactivity. More importantly, better PRRSV-specific neutralizing antibody titers and cell-mediated immune responses were observed in mice immunized with the DNA vaccine co-expressing GP3 and GP5 proteins than in mice immunized with a DNA vaccine expressing either protein singly. The results of this study demonstrated that co-immunization with GP3 and GP5 produced a better immune response in mice.
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Affiliation(s)
| | | | - Hui-Jun Lu
- Institute of Military Veterinary, Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Academy of Military Medical Sciences, Changchun 130122, China.
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Liu H, Lu HJ, Liu ZJ, Jing J, Ren JQ, Liu YY, Lu F, Jin NY. Japanese encephalitis virus in mosquitoes and swine in Yunnan province, China 2009-2010. Vector Borne Zoonotic Dis 2012. [PMID: 23199264 DOI: 10.1089/vbz.2012.1016] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The residential regions of Yunnan province, canton of Jing Hong, in China were surveyed for Japanese encephalitis virus (JEV) infection in mosquito and swine vectors to determine the frequency of JEV-carrying zoonotic vectors in 2009-2010. A total of 21,500 mosquitoes were collected and divided by species, and brain tissue was collected from 108 stillborn piglets. The infection rates for the different JEV species were 13.2% for Culex tritaeniorhynchus, 2.7% for Anopheles sinensis, 0.7% for Armigeres subalbatus, and 18.5% for stillborn piglets. The complete genomes of two JEV samples that were collected in different seasons and different regions, Yunnan 0901 and Yunnan 0902, were sequenced from a pool of Culex mosquitoes and stillborn piglets that had been collected randomly from several piggeries. Multiple sequence alignment with 24 fully-sequenced genes and 93 complete sequences of the JEV-encoded E gene revealed nucleotide homologies ranging from 97.2-99.6% and 94.5-99.7% in mosquitoes and piglets, respectively, and deduced amino acid homologies ranging from 97.4-98.1% and 96.0-98.2%, respectively. Phylogenetic analyses of the Yunnan 0901 and Yunnan 0902 strains' full-length genomes and E gene sequences indicated that these strains are most closely related to six Chinese SA14-derived viruses, and distantly related to the Australian FU, vellore P20778, and Japanese Ishikawa strains, and the previously isolated YN86-B8639 strains. The phylogenetic relationships based on the full-length genome were similar to those found for the E gene, indicating that phylogenetic analysis of the E gene will be a useful approach for genotyping of JEV, but not to better understand the potential changes in the biological characteristics and genetic relationship of JEV isolates.
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Affiliation(s)
- Hao Liu
- Institute of Military Veterinary, Academy of Military Medical Sciences, Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun, PR China
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Liu H, Liu ZJ, Jing J, Ren JQ, Liu YY, Guo HH, Fan M, Lu HJ, Jin NY. Reverse transcription loop-mediated isothermal amplification for rapid detection of Japanese encephalitis virus in swine and mosquitoes. Vector Borne Zoonotic Dis 2012; 12:1042-52. [PMID: 23176446 DOI: 10.1089/vbz.2012.0991] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Japanese encephalitis (JE) can infect many agriculturally important animals and humans, and has a high incidence in Asia. One of the natural hosts of the mosquito-borne JE virus (JEV) is domestic pigs, which act as amplifier hosts. Porcine infection results in fatal encephalitis, abortion, and stillbirth in pregnant sows, and hypospermia in boars. In this study, a rapid JEV detection method for swine and mosquitoes was developed based on reverse transcription loop-mediated isothermal amplification (RT-LAMP) targeting the nucleocapsid (E) genes of JEV genotype I (lineage K94PO5), and genotype III (lineage SA14-14-2). Fifty-six swine blood samples and 20,000 mosquitoes were used to evaluate the method, compared to conventional RT-polymerase chain reaction (PCR) and real-time RT-PCR. RT-LAMP had detection limits of 2.57 and 2.34 copies/μL for JEV I and III, respectively. Assay sensitivity was similar to real-time RT-PCR, but was 10-fold higher than conventional RT-PCR. Assay specificity was high, showing no cross-reactivity to other flaviviruses. The results of virus isolation and identification of swine blood samples and mosquito samples were fully consistent with RT-LAMP. Finally, the JEV RT-LAMP assay was simpler and less time consuming than conventional RT-PCR or real-time RT-PCR, since the amplification step could be completed in a single tube within 50 min at 63°C. In conclusion, the newly-developed RT-LAMP assay is an accurate and convenient method for rapid and sensitive diagnosis of JEV in swine and mosquitoes, and may prove to be a practical molecular tool for surveillance and epidemiological investigations.
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Affiliation(s)
- Hao Liu
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, PR China
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Hirano S, Sato G, Kobayashi Y, Itou T, Rong Luo T, Liu Q, Jin NY, Xuan X, Sakai T. Analysis of Chinese rabies virus isolates from 2003-2007 based on P and M protein genes. Acta Virol 2010; 54:91-8. [PMID: 20545436 DOI: 10.4149/av_2010_02_91] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED Phylogenetic analysis of nucleotide sequences or deduced amino acid sequences of phosphoprotein (P protein), matrix (M) protein, and glycoprotein (G protein) genes of 18 Chinese isolates of Rabies virus (RABV) from 2003-2007 showed that these isolates formed a separate monophyletic lineage consisting of sub-lineages A and B. Compared with laboratory-fixed strains, recent Chinese isolates of sub-lineage B contained Val or Ala instead of Met69 in P protein, which is involved in generating truncated P proteins. In addition, one of these isolates CHpg3 had Pro instead of Ser63 and Leu instead of Ser64. Importantly, all functional domains of P and M proteins of all recent Chinese isolates were similar to those of laboratory-fixed strains. This study showed that although the recent Chinese RABV isolates belonged to a distinct lineage, their functional domains of P and M proteins were highly conserved. KEYWORDS rabies virus; glycoprotein; phosphoprotein; matrix protein; China.
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Affiliation(s)
- S Hirano
- Nihon University Veterinary Research Center, Kameino 1866, Fujisawa, Kanagawa 252-0080, Japan
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Jia P, Jin NY, Li X, Zhu GZ, Liu Y, Gao P, Xu XH, Yang EC, Meng RZ, Kan SF. [Establishment of a fluorescent real-time quantitative RT-PCR assay for detection of genotype 4 hepatitis E virus in swine stools]. Bing Du Xue Bao 2010; 26:33-39. [PMID: 20329556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The primers and probes for the Real-time RT-PCR were designed based on the multiple sequence (swine and humans HEV strains) alignments of the ORF3 region of genotype 4 HEV. A rapid, sensitive and stable TaqMan Real-time RT-PCR assay was established, and its specificity and sensitivity were assessed, and comparison of the Real-time RT-PCR with conventional and nested RT-PCR was performed. The results found that the crossing points showed linearly proportional to the logarithm of the input copy number. The correlation coefficient (R2) and the slope value of the standard curves with plasmid DNA were 0.994 and -3.312, respectively. The efficiency (E) of the PCR was 100%. Coefficients of variation values of the different diluted plasmid DNA were low in the same or different repeated experimental group. In addition, the assay was able to correctly detect genotype 4 HEV RNA from swine fecal samples. The sensitivity of established assay was 100-fold higher than that of conventional RT-PCR and 10-fold higher than nested RT-PCR.
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Affiliation(s)
- Peng Jia
- Genetic Engineering Laboratory of PLA, Academy of Military Medical Sciences of PLA, Changchun 130062, China.
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Chen L, Jin NY, Li X, Liu LM, Jia P, Liu Y, Gao P, Lu YS, Chi BR. Construction and identification of the recombinant adenovirus expressing Apoptin gene of chicken anemia virus. Shijie Huaren Xiaohua Zazhi 2008; 16:3505-3509. [DOI: 10.11569/wcjd.v16.i31.3505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To construct a recombinant adenovirus carrying Apoptin gene so as to provide a basis for further studying the molecular mechanism of Apoptin gene in inducing tumor cell apoptosis.
METHODS: The plasmid pVAX1-Apoptin was digested by endonuclease BamHⅠ and SpeⅠ, and the obtained Apoptin segment was inserted into vector pacAd5 CMV K-N pA to construct a shuttle plasmid pacAd5-Apoptin. After PacⅠ digestion and linearized process, the plasmid pacAd5-Apoptin and pAD (genome plasmid) were co-transfected into AAV-293 cells by liposome mediation. The DNA containing Apoptin gene of the recombinant adenovirus was identified by plaque purification, reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. The titer of the obtained adenovirus was also examined.
RESULTS: The recombinant adenovirus expressed Apoptin gene and the molecular weight of the protein was about 13 kDa, which was consistent with the CVA-positive control. The protein of Apoptin could be effectively expressed in the recombinant adenovirus, and this protein had response to the CAV-positive serum. The titer of the recombinant virus was 1011 PFU/L.
CONCLUSION: The adenovirus containing Apoptin gene is successfully constructed, and the virus titer is able to meet the requirements of in vitro and in vivo experiments.
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Li C, Jin NY, Wang HW, Liu YS, Yu F, Tong JS, Hu NN. [Expression of anti-HIV envelope glycoprotein scFv in Pichia pastoris and its biologic activities analysis]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2007; 23:1144-1146. [PMID: 18062888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
AIM To construct the vector and express anti-HIV-1 envelope glycoprotein single chain Fv fragment in Pichia pastoris. METHODS The target gene was digested from plasmid pET28-scFv and cloned into pichia pastoris vector via gene engineering and DNA recombination techniques. The recombinant plasmid was linearized and transferred into Pichia pastoris strains GS115 by electroporation. After positive recombinant was selected and expression was induced by methanol, the target protein was analyzed by RT-PCR, SDS-PAGE and double-antibody sandwich ELISA. RESULTS High copies of transformant were obtained by phenotype determining and PCR amplification. RT-PCR and SDS-PAGE demonstrated the target protein was successfully expressed. And the yield account for about 18 percent of the total cell proteins. Double-antibody sandwich ELISA analysis proved that the recombinant scFv had good biological activities since it could be recognized and induce special immune respond with gp120 antigen. CONCLUSION The scFv was expressed successfully. This research will lay the foundation for AIDS target therapy and further study of anti-HIV activities.
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Affiliation(s)
- Chang Li
- Virus Laboratory of Veterinary Institute, Academy of Military Medical Sciences, Changchun 130062, China.
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Zhang L, Jin N, Song Y, Wang H, Ma H, Li Z, Jiang W. Construction and characterization of a recombinant fowlpox virus containing HIV-1 multi-epitope-p24 chimeric gene in mice. ACTA ACUST UNITED AC 2007; 50:212-20. [PMID: 17447028 DOI: 10.1007/s11427-007-0017-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2005] [Accepted: 10/12/2006] [Indexed: 10/23/2022]
Abstract
The epidemic of HIV/AIDS is sweeping across the world. It is of great importance to figure out new ways to curb this disease. Epitope-based vaccine is one of these solutions. In this study, a chimeric gene was obtained by combination of a designed HIV-1 multi-epitope gene (MEG) and HIV-1 p24 gene. A recombinant plasmid pUTA2-MEGp24 was then constructed by inserting MEGp24 gene into the downstream of the promoter (ATI-P7.5x20) of fowlpox virus (FPV) transfer vector pUTA2. The recombinant plasmid and wild-type FPV 282E4 strain were then co-transfected into CEF cells and homologous recombination occurred. A recombinant virus expressing HIV-1 protein MEGp24 was screened by genome PCR and Western blot assay. Large scale preparation and purification of the recombinant fowlpox virus (rFPV) were then carried out. BALB/c mice were immunized intramuscularly with the rFPV for three times on day 0, 14 and 42. Mice were executed and sampled one week after the third inoculation. Anti-HIV-1 antibody in serum and Th1 cytokines in the supernatant of cultured spleen cells were assayed by ELISA. The count of T lymphocyte subsets and the CTL activity of spleen lymphocytes were analyzed by flow cytometry and lactate dehydrogenase (LDH) release assay, respectively. The results showed that HIV-1 specific antibody in serum and increased T lymphocyte subsets (CD4(+) T, CD8(+) T) were detected in the immunization group. CTL target-killing activity and higher secretion of Th1 cytokines (IFN-gamma and IL-2) of spleen lymphocytes stimulated by H-2(d)-restricted CTL peptide were observed in immunized mice. We concluded that the rFPV may induce HIV-1 specific immunity especially cellular immunity in mice.
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Affiliation(s)
- LiShu Zhang
- The 11th Institute, Academy of Military Medical Sciences, Changchun 130062, China
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Sun LL, Jin NY, Xiao L. [Anti-tumor effects of apoptin gene on human laryngeal carcinoma Hep-2]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2007; 42:148-50. [PMID: 17633262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
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Zhao B, Jin NY, Wang RL, Zhang LS, Zhang YJ. Immunization of mice with a DNA vaccine based on severe acute respiratory syndrome coronavirus spike protein fragment 1. Viral Immunol 2006; 19:518-24. [PMID: 16987069 DOI: 10.1089/vim.2006.19.518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
According to data in GenBank, a gene encoding SARS spike protein fragment 1 (S1) was synthesized. After recombination with an immunostimulatory sequence (ISS), the gene was cloned into the plasmid pIRES to produce pIRES-ISS-S1. On confirmation of the expression of S1 protein by indirect immunofluorescence assay (IFA), after the transfection of pIRES-ISS-S1 into BHK-21 cells, the DNA vaccine was repeatedly administrated to BALB/c mice. CD4+ and CD8+ spleen T lymphocytes were analyzed by flow cytometry (FCM) to evaluate T cell-mediated immune responses, the antigen-specific responses of T cells were evaluated by cytotoxic T lymphocyte (CTL) assay, and the level of IgG in antisera from immunized mice was determined by enzyme-linked immunosorbent assay. Results showed that the counts of spleen CD4+ and CD8+ T lymphocytes were increased, that the T cell-mediated immune responses showed antigen specificity, and that IgG was significantly induced with DNA vaccines pIRES-ISS-S1 and pIRES-S1 at titers of 1:320 and 1:160, respectively. These results are promising for the protective immunization of humans.
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Affiliation(s)
- Bo Zhao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University [corrected] Changchun, China
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Li X, Jin NY, Lian H, Chen LG, Sun LL, Li P. Anti-tumor effects of Apoptin gene on human gastric carcinoma BGC-823 and its correlation with apoptotic signal transduction. Shijie Huaren Xiaohua Zazhi 2006; 14:2991-2996. [DOI: 10.11569/wcjd.v14.i31.2991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the anti-tumor effects of Apo-ptin gene on human gastric carcinoma BGC-823, and to explore the mechanism of apoptin in the participation of signal transduction pathway.
METHODS: Recombinant plasmid pVAX1-Apoptin was transfected into BGC-823 cells by application of liposome in vitro. The anti-tumor effect on BGC-823 cells was measured through methyl thiazolyl tetrazolium (MTT) assay, and the morphological changes of pVAX1-Apoptin-transfected cells were observed by AO/EB staining. Furthermore, the mitochondrial trans-membrane potential (ΔΨm) was analyzed by flow cytometry and the release of cytochrome c (Cyto c) was detected by Western blot assay. Colorimetric assay was used to analyze the activities of Caspase-3/9.
RESULTS: pVAX1-Apoptin caused a more powerful cytotoxic effect than pVAX1 did (72 h after 10-μg plasmid transfection, 23.37% vs 99.61%, P < 0.01), and apoptosis was a dominant death style in the pVAX1-Apoptin-transfected cells. Furthermore, in pVAX1-Apoptin-transfected cells, an increase of cytosolic cytochrome c content co-occurred with a loss of trans-membrane potential (compared with pVAX1-transfected BGC-823 cells, 46.70% ± 7.26% vs 70.66% ± 5.98%, P < 0.01). In addition, a significant difference was found between pVAX1-Apoptin- and pVAX1-transfected cells in Caspase-9 and Caspase-3 activities (Caspase-9: 0.181 ± 0.032 vs 0.079 ± 0.013, P < 0.01; Caspase-3: 0.242 ± 0.041 vs 0.058 ± 0.023, P < 0.01).
CONCLUSION: In BGC-823 cells, pVAX1-Apoptin induced collapse of the mitochondrial trans-membrane potential can exert a feedback effect to elicit cytochrome c release, and then lead to the activation. Cytochrome c-dependent Caspase-9 activation stimulates the key downstream factors of apoptotic pathway, exhibiting an inhibitory effect on BGC-823 cells.
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Xu YM, Jin NY, Xia ZP, Ma MX, Lu HJ, Han S, Jin KS, Liang GD. Expression of AIV Subtype H5HA, H7HA and H9HA Hemagglutinin Gene in Pichia pastoris. ACTA ACUST UNITED AC 2006; 22:231-6. [PMID: 16607949 DOI: 10.1016/s1872-2075(06)60025-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The expression of the hemagglutinins of Avian influenza virus H5 H7and H9 subtypes was studied in this article by Pichia pastoris, one of the eukaryotis expression systems. Three reconstructed expression plasmids and engineering strains, named pPIC9K-H5HA, pPIC9K-H7HA, pPIC9K-H9HA and GS115/pPIC9K-H5HA, GS115/pPIC9K-H7HA, GS115/pPIC9K-H9HA repectively, were obtained. The reconstructed yeast engineering strains were identified by MD and MM plate selecting and PCR. The induced interests proteins were examined by SDS-PAGE and Western-bloting,the results showed that the interest genes were expressed exactly. And this will be helpful in the future study of antigen detection and antibody detection kit, as well in the subunit vaccines developing.
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Affiliation(s)
- Yi-Ming Xu
- The Key Genetic Engeneering Lab of PLA Academy of Military Medical Sciences, Changchun 130062, China
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31
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Wang HW, Cole D, Jiang WZ, Jin HT, Fu N, Chen ZL, Jin NY. Engineering and functional evaluation of a single-chain antibody against HIV-1 external glycoprotein gp120. Clin Exp Immunol 2005; 141:72-80. [PMID: 15958072 PMCID: PMC1809408 DOI: 10.1111/j.1365-2249.2005.02826.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The HIV-1 envelope glycoprotein surface subunit gp120 is an attractive target for molecular intervention. This is because anti-HIV-1 gp120 neutralizing antibodies display the potential ability to inhibit HIV-1 infection. The present investigation describes the construction of a genetically engineered single chain antibody (scFv102) against HIV-1 gp120, its expression and functional evaluation. The parental hybridoma cell line (102) produces an immunoglobulin directed against the conserved CD4-binding region of gp120. cDNAs encoding the variable regions of the heavy (V(H)) and light (V(L)) chains were prepared by reverse transcription PCR and linked together with an oligonucleotide encoding a linker peptide (Gly(4)Ser)(3) to produce a single chain antibody gene. The resulting DNA construct was cloned into a prokaryotic expression vector (pET28) and recombinant scFv102 was expressed in Eserichia coli as an insoluble protein. The denatured scFv102 was refolded and purified by immobilized metal ion affinity chromatography. Purified scFv102 had the same specificity as the intact IgG in immuno-blotting assays and immuno-fluorescence (IF) detection, but ELISA analyses demonstrated the affinity of scFv102 to be 5-fold lower than that of the parental monoclonal antibody. In neutralization assays, scFv102 at concentrations lower than 40 microg/ml exhibited efficient interference with viral replication and inhibition of viral infection (90%) across a range of primary isolates of subtype B HIV-1. These results suggest that the constructed anti-HIV-1 gp120 scFv102 has good biological activity and can potentially be used for in vitro diagnostic and in vivo therapeutic applications.
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Affiliation(s)
- H W Wang
- Department of Immunology, Southern Medical University, Guangzhou, 510515, PR China
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32
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Wang H, Jin NY, Yin GF, Xu YM, Jin HT, Zhang LS, Li ZJ. [Expression and detection of recombinant directing toxin SL120 in Pichia pastoris]. Sheng Wu Gong Cheng Xue Bao 2005; 21:473-7. [PMID: 16108377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Anti-HIV-1 gp120 single chain antibody(scFv) gene and staphylococcus extoxin A(SEA) gene were inserted into vector pPIC9K. The recombinant plasmid was integrated into Pichia pastoris by electroporation. High level expression was performed by determining the Muts phenotype and screening muti-copy integrants. The recombinant protein was about 57kD and the production was 50.1 mg/L. It was shown that the two kinds of protein affected the conformation of each other by antibody affinity assay, but the recombinant targeting toxins could highly mediate CTLs to kill HIV-1 target cells.
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Affiliation(s)
- Hong Wang
- Key laboratory of Genetic Engineering of PLA, Academy of Military Medical Sciences, Changchun 130062, China
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Li ZJ, Jin NY, Jiang WZ, Zhang LS. [Immune response to HIV-2 gp105 DNA vaccine in mice]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2005; 21:86-9. [PMID: 15629093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
AIM To explore the immune response of mice vaccinated with HIV-2 gp105 nucleic acid vaccine. METHODS pVAX1-gp105 recombinant DNA vaccine was constructed by inserting HIV-2 gp105 cDNA into an eukaryotic expression vector pVAX1. BALB/c mice were immunized with pVAX1-gp105, pVAX1 and PBS, respectively via intramuscular injection. Anti-HIV-2 antibody was detected by ELISA. The percentages of CD4(+) and CD8(+) T cell subsets from immunized mice were analyzed by flow cytometry and the specific killing activity of splenic CTLs was measured by lactate dehydrogenase (LDH) release assay. RESULTS The titer of specific antibody, the numbers of CD4(+) and CD8(+) T cells and cytotoxic activity of specific CTLs in pVAX1-gp105 vaccination group were obviously higher than those in control group (P<0.01, P<0.05 and P<0.01, respectively). CONCLUSION pVAX1-gp105 nucleic acid vaccine can elicit specific cellular and humoral immunities in mice.
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Affiliation(s)
- Zi-Jian Li
- Key Laboratory of Genetic Engineering, Military Veterinary Institute, Academy of Military Medical Sciences, Changchun 130062, China.
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34
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Mi ZQ, Jin NY, Sun YC, Li X, Lian H, Li J, Guan GF. [Antitumor research on mouse melanoma with combined application of Newcastle disease virus and its HN gene]. Ai Zheng 2004; 23:910-3. [PMID: 15301713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
BACKGROUND & OBJECTIVE Although Newcastle disease virus (NDV) shows antitumor effect on many tumors, its mechanism is unclear. Hemagglutinin-neuraminidase (HN) gene was found to play an important role in NDV antitumor effect and HN protein located on tumor cell surface. This research was to evaluate the possibility of HN protein as a foreign antigen of tumor cell and the antitumor effect of the combined application of HN gene and NDV. METHODS C57BL/6 mice were subcutaneously inoculated with 2 x 10(5) B16 tumor cells in the right hindlimb. Combination group: on 2nd day post-inoculation, the recombinant plasmid containing HN gene was injected intramuscularly in the left hindlimb; on 7th day post-inoculation, 2 x 10(9) pfu NDV was administrated intratumorally. The alone HN gene group, NDV group, and PBS control group were treated as above. The antitumor effect was observed through tumor suppression rate, the antitumor mechanisms were researched with specific cytotoxic T lymphocyte (CTL) assay, and the expression determination of HN protein, ICAM-I, and CD48 on the B16 tumor cells. RESULTS The antitumor efficacy of the combined application of NDV and its HN gene increased compared with NDV,and its HN gene alone, the tumor suppression rates were 82.8%, 41.0%, and 56.6%; the specific CTL activity were 18.4%, 10.1%, and 4.4%, respectively. Furthermore, the expression of HN gene had been detected, and the expression of ICAM-I and CD48 were up-regulated on the tumor cells after NDV injection. CONCLUSION HN protein located on the surface of tumor cells and mediated the specific repulsion to tumor cells; the antitumor efficacy increased after the combined application of NDV and its HN gene.
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Affiliation(s)
- Zhi-Qiang Mi
- Key Genetic Engineering Laboratory of PLA, Quartermaster University of PLA, Changchun, Jilin,130062, PR China
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35
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Jiang WZ, Jin NY, Li ZJ, Zhang LS. [Study on the immunogenicity of HIV-1 gag vaccine]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2004; 20:272-3. [PMID: 15193215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
AIM To detect the immunogenicity of HIV-1 gag DNA vaccine. METHODS The serum antibody titers of the immunized mice were detected by ELISA. The numbers of spleen's CD4(+) and CD8(+) T cells were analyzed by the fluorescent antibody staining and the cytotoxic activity was determined by lactate dehydrogenase (LDH) release assay. RESULTS The titers of the serum antibodies and the numbers and cytotoxic activity of spleen's T lymphocyte subsets had significant differences (P<0.05 and P<0.01, respectively) between pVAXGAG and pVAX1 vaccinated groups. CONCLUSION HIV-1 DNA vaccine plasmid pVAXGAG could elicit both the specific humoral and cellular immunities in BALB/c mice.
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Affiliation(s)
- Wen-Zheng Jiang
- Key Laboratory of Genetic Engineering, Quartermaster University of PLA, Changchun 130062, China.
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36
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Jiang WZ, Jin NY, Li ZJ, Zhang LS, Han WY. [Construction of recombinant fowlpox virus coexpressing gp120 of Chinese HIV-1 strain and IL-18 and its immunogenicity in mice]. Sheng Wu Gong Cheng Xue Bao 2004; 20:337-41. [PMID: 15971601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
To screening out Chinese vaccine candidate against HIV-1, Chinese vaccine strain 282E4 of fowlpox virus was used as the vector to construct the recombinant fowlpox virus (rFPV) coexpressing gp120 of Chinese HIV-1 strain and IL-18, and the recombinant virus was indentified by PCR and Western blot. The specific DNA fragment could be amplified by PCR from the genome of rFPV. Western blot analysis showed that gp120 and IL-18 could be expressed not only in chicken embryo fibroblast (CEF) cells infected by rFPV, but also in mammalian cells infected by rFPV. After the recombinant fowlpox virus was inoculated into BALB/c mice, the spleen specific CTL activities and serum antibodies in the immunized mice were detected, which demonstrated that the rFPV had good immunogenicity and could induce BALB/c mice to produce specific humoral and cellular immunity. IL-18 palyed the role of immunoadjuvant. The study lays the basis on the preparation of genetic engineering live vector vaccine against HIV-1.
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Affiliation(s)
- Wen-Zheng Jiang
- Key Laboratory of Genetic Engineering of PLA, Quartermaster University of PLA, Changchun 130062, China
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37
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Hua QY, Jin NY, Xu ZZ, Yang YQ, Dong J, Yang JY, Zhou XL. [Expressing of N gene encoding nucleocapsid protein of vesicular stomatitis virus and elementary application in ELISA]. Sheng Wu Gong Cheng Xue Bao 2004; 20:130-5. [PMID: 16108504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The gene encoding the nucleocapsid (N) protein of vesicular stomatitis virus (VSV-NJ) was subcloned from pMD-VN5, and inserted into pBAD/Thio TOPO vector. The recombinant plasmid was identified by restriction analysis and PCR. It was sequenced to confirm the correct sequences and the correct junctional orientations of the inserted N gene. The results of SDS-PAGE and Western immunoblotting revealed that the N protein was expressed in Escherichia coli LGM194 in a high level and the recombinant fusion protein, which contained a N-terminal HP-Thioredoxin and a C-terminal polyhistidine tag. It had a molecular mass of approximately 63.5 kD and immunologically reactive activity. The recombinant protein was characterized and tested in an enzyme-linked immunosorbent assay (ELISA) format for potential application in the serodiagnosis of vesicular stomatitis using 186 serum samples from experimentally infected goats and guinea-pigs with VSV-NJ and VSV-IN, and from field origin and reference serum samples. The sensitivity and specificity of the ELISA were compared with those of the standard microtiter serum neutralization (MTSN) tests. The ELISA and MTSN test results were highly correlated for detection of VSV antibodies. The ELISA was as sensitive as the SN assay in detecting positive serum to VSV. The correlation between SN titers and ELISA titers was statistically significant. These data suggest that the recombinant fusion N protein of VSV could be used as a recombinant test antigen for the serodiagnosis of vesicular stomatitis. The ELISA based on the reconmbinant nucleocapsid protein may offer the best combination of rapidity, sensitivity, simplicity, economy, and laboratory biosafety of any of the methods yet developed for VSV serodiagnosis. This study lay on foundation for the development of the diagnosis methods in serology for VSV.
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Affiliation(s)
- Qun-Yi Hua
- Technology Center of Yunnan Entry-Exit Inspection and Quarantine Bureau, Kunming 650228, China.
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Hu XX, Huang YH, Gao Y, Du ZQ, Feng JD, Xu WZ, Deng XM, Zhang Y, Fan BL, Zhao ZH, Liu ZL, Yang N, Jin NY, Wu CX, Li N. [Preliminary analysis on China Agricultural University chicken resource population based on genomic scanning]. Yi Chuan Xue Bao 2003; 30:1101-6. [PMID: 14986426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Combining the technique of multiplex-PCR and the fluorescent semi-automated detection, a large-scale genome scanning was performed for 440 chickens, which was derived from China Agricultural University chicken resource families, within three generations. Fifty-five microsatellite markers were analyzed for this study. Those 55 microsatellite loci accorded with the characters of Mendelian co-inheritance. The heterozygosities ranged from zero to 0.89, with 72% of loci having a heterozygosity of more than 0.60. The polymorphism information content (PIC) ranged from 0 to 0.85, in which 70% of those loci had a PIC of more than 0.50 but their distribution varied in line A and line C. The allele frequency was significantly different between line A and line C at most loci (P < 0.01). At the same time, gene accordance inclination was found in line C. The Nei population resemble coefficient and standard genetic distance were 0.1002 and 0.8928.
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Affiliation(s)
- Xiao-Xiang Hu
- State Key Laboratory for Agro-biotechnology, China Agricultural University, Beijing 100094, China
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Jiang WZ, Jin NY, Han WY. [Construction and Identification of DNA vaccine containing chimeric gene gag-gp120 of HIV-1]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2003; 19:341-2. [PMID: 15163379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
AIM To construct DNA vaccine expression plasmid containing the chimeric gene gag-gp120 of HIV-1. METHODS The recombinant eukaryotic expression vector pVAXGE was constructed via inserting the chimeric gene gag-gp120 into the vector pVAX1. Hela cells had been transfected by recombinant plasmid via liposome. After 72 h, the transfected cells was detected by RT-PCR and analyzed by Dot-ELISA. RESULTS The transcript products of target gene could be amplified from the cells transfected by recombinant plasmid. Dot-ELISA detection showed that the target gene was expressed in Hela cells. CONCLUSION The DNA vaccine plasmid expressing chimeric gene gag-gp120 was successfully constructed, which lays the foundation for preparing DNA vaccine against HIV-1.
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Affiliation(s)
- Wen-Zheng Jiang
- Key Laboratory of Gene Engineering of PLA, Quartermaster University of PLA, Changchun 130062,China
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Zhang YJ, Jin NY, Jiang WZ, Zhu XJ, Shen JC. Cloning and expression of the external-glycoprotein gene mutant from HIV-2 in the methylotrophic yeast Pichia pastoris and identification of the glycoprotein. Biotechnol Appl Biochem 2001; 34:1-4. [PMID: 11483147 DOI: 10.1042/ba20010014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To achieve high-level expression of HIV-2(ROD) external glycoprotein gp105 in Pichia pastoris, the gp105 gene mutant tP1, with the 5' non-functional region of the gp105 gene removed, was obtained by PCR amplification and was cloned into secreted expression vector pHILS1. The His(+)Mut(s) recombinant P. pastoris strain was screened by PCR and induced by methanol. SDS/PAGE and Western-blot analyses showed that mutation of the low-usage codon AGG into synonymous codon CGA and the introduction of the optimal codon TTC made P. pastoris overexpress tP1, an 85 kDa heterologous glycoprotein that was secreted into the medium and recognized specifically by HIV-2 polyclonal antibody. The recombinant strain GS115/tP1 had excellent genetic stability in terms of the properties of growth and expression of gp105, and seven out of 58 recombinant stains with a yield of 29% were selected to be used for further purification of gp105.
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Affiliation(s)
- Y J Zhang
- College of Life Science, Jilin University, Changchun, 130023, People's Republic of China.
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41
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Zhang YJ, Jin NY, Wang HW, Jin HT, Shen JC. Expression of HIV-2 gp 105 Gene and Characterization of gp105 in Methyltrophic Pichia pastoris. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2001; 33:405-408. [PMID: 12040413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
To explore a new approach to express HIV-2 external glycoprotein gp105 in methyltrophic yeast, Pichia pastoris, the gp 105 gene was obtained by PCR amplification and was cloned into the secreted expression vector pHILS1. The positive recombinant Pichia pastoris strains were screened and identified by PCR after electroporation and induction by methanol of the gp105 expression. SDS-PAGE and Western blot analyses showed that gp105, unlike gp120 from HIV-1, could be secreted into medium by recombinant Pichia pastoris strain, and the expressed product of a 90 kD glycoprotein showed satisfactory antigenicity with specific antibody.
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Affiliation(s)
- Ying-Jiu Zhang
- Colloge of Life Science, Jilin University, Changchun 130023, China.
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Li TY, Jin NY, Wang HW, Guo ZR, Fang HH, An RG, Yin Z. [Expression and characterization of HIV-1 Gag p17-p24 protein]. Sheng Wu Gong Cheng Xue Bao 2000; 16:65-8. [PMID: 10883279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The biological and immunological characteristics of HIV-1 core protein p17-24 expressed by recombinant vaccinia viruses were studied. The results of indirect immunofluorescence assay (I-IFA), Western blot and dot ELISA showed that the two recombinants could express the p24 gag and p17-24 gag fusion proteins in infected cell lines respectively. The electromicroscope observation revealed that the expressed proteins could also assemble into virus-like particles. The recombinant vaccinia viruses can also stimulate mice for the formation of anti HIV-1 Gag p24 antibody. When infected with the recombinant viruses, the chromosome DNA ladder caused by the apoptosis of the BHK cell was observed.
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Affiliation(s)
- T Y Li
- Changchun University of Agriculture and Animal Sciences
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Jin NY, Funahashi S, Shida H. Constructions of vaccinia virus A-type inclusion body protein, tandemly repeated mutant 7.5 kDa protein, and hemagglutinin gene promoters support high levels of expression. Arch Virol 1994; 138:315-30. [PMID: 7998837 DOI: 10.1007/bf01379134] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We devised vaccinia virus (VV)-based vector systems that support higher levels of expression of cloned genes in the early and late phases of the infection cycle than reported previously. Enhanced expression can be obtained by combining the promoter of the A-type inclusion body protein gene, the mutated early region of the 7.5-kDa gene promoter (7.5-kDa promoter), and the promoter of the hemagglutinin (HA) gene. One construct produced 60 micrograms/10(6) cells of chloramphenicol acetyltransferase (CAT), equivalent to 10-18% of total cell protein. Another construct produced about seven times more CAT during the early phase than the amount synthesized under the control of the 7.5-kDa promoter alone. The envelope proteins of human immunodeficiency virus type I synthesized during the early phase of infection were more active as immunogens than these proteins synthesized during the late phase, regardless of the amounts produced.
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Affiliation(s)
- N Y Jin
- Institute for Virus Research, Kyoto University, Japan
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