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Yao Y, Zeng Y, Huang H, Li J, Li J, Xin R. Characteristics of Four Novel Recombinant Strains from the Backbone of CRF55_01B and CRF65_cpx in Beijing by Near Full-Length Genome. AIDS Res Hum Retroviruses 2021; 37:936-945. [PMID: 34167316 DOI: 10.1089/aid.2020.0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The HIV-1 epidemic was mainly driven by men who have sex with men (MSM) recently in Beijing, China, with high genetic diversity. Novel recombinant strains were frequently reported at 3.4%-9.9%. It is imperative to interpret the recombinant modes and the putative transmission sources by near full-length genome (NFLG). Four individuals from the MSM population were identified as novel recombinant strains during surveillance of pretreatment drug resistance. NFLG sequences were harvested by near end-point dilution and nested PCR with two overlapping half fragments. Phylogenetic inference was performed with subtyping reference sequences and major parental strain sequences, to explore the patterns of genetic recombinant and potential sources of parent strains. The breakpoints were determined using SimPlot 3.5 to draw genome mosaic map, and the potential parental strains were confirmed by Mega 6.0 using segmental neighbor-joining trees. BL19487-00 and BL1948-00 sequences were obtained from epidemiologically linked individuals and shared similar breakpoints (HXB2 nt 4,497 ± 8 to 4,722) with substitution of subtype B pol gene segment in the backbone of CRF55_01B. BL3104-00 and BL4307-00 carried seven and eight breakpoints, respectively, in the backbone of CRF65_cpx with g5 CRF01_AE substitutions. The recombinant fragments were located around gag, pol, and env genes, with vpr-tat and nef-3'-LTR genes only for BL4307-00. No transmitted drug resistance was observed with the four unique recombinant forms (URFs), except for some drug resistance associated mutations. The advent of URFs around CRF55_01B and CRF65_cpx identified in recent years implied that the sexual behaviors were active and the epidemic of HIV was complicated among MSM in Beijing. Molecular epidemiological surveillance and precise control should be reinforced for this population.
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Affiliation(s)
- Yaping Yao
- Department of Science Research and Information Management, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Yuhong Zeng
- School of Public Health, Capital Medical University, Beijing, China
| | - Huihuang Huang
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - Jia Li
- Institute of STD/AIDS Prevention and Treatment, Beijing Center Disease Prevention and Control, Beijing, China
| | - Jie Li
- Institute of STD/AIDS Prevention and Treatment, Beijing Center Disease Prevention and Control, Beijing, China
| | - Ruolei Xin
- Institute of STD/AIDS Prevention and Treatment, Beijing Center Disease Prevention and Control, Beijing, China
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2
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Sanchez J, Gonçalves E, Llano A, Gonzáles P, Fernández-Maldonado M, Vogt A, Soria A, Perez S, Cedeño S, Fernández MA, Nourikyan J, de Bernard S, Ganoza C, Pedruzzi E, Bonduelle O, Mothe B, Gòmez CE, Esteban M, Garcia F, Lama JR, Brander C, Combadiere B. Immune Profiles Identification by Vaccinomics After MVA Immunization in Randomized Clinical Study. Front Immunol 2020; 11:586124. [PMID: 33244316 PMCID: PMC7683801 DOI: 10.3389/fimmu.2020.586124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/12/2020] [Indexed: 12/04/2022] Open
Abstract
Background Our previous work has demonstrated the benefits of transcutaneous immunization in targeting Langerhans cells and preferentially inducing CD8 T-cell responses. Methods In this randomized phase Ib clinical trial including 20 HIV uninfected volunteers, we compared the safety and immunogenicity of the MVA recombinant vaccine expressing HIV-B antigen (MVA-B) by transcutaneous and intramuscular routes. We hypothesized that the quality of innate and adaptive immunity differs according to the route of immunization and explored the quality of the vector vaccine-induced immune responses. We also investigated the early blood transcriptome and serum cytokine levels to identify innate events correlated with the strength and quality of adaptive immunity. Results We demonstrate that MVA-B vaccine is safe by both routes, but that the quality and intensity of both innate and adaptive immunity differ significantly. Transcutaneous vaccination promoted CD8 responses in the absence of antibodies and slightly affected gene expression, involving mainly genes associated with metabolic pathways. Intramuscular vaccination, on the other hand, drove robust changes in the expression of genes involved in IL-6 and interferon signalling pathways, mainly those associated with humoral responses, and also some levels of CD8 response. Conclusion Thus, vaccine delivery route perturbs early innate responses that shape the quality of adaptive immunity. Clinical Trial Registration http://ClinicalTrials.gov, identifier PER-073-13.
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Affiliation(s)
- Jorge Sanchez
- Centro de Investigaciones Tecnológicas, Biomedicas y Medioambientales, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Elena Gonçalves
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMIParis), Paris, France
| | - Anuska Llano
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | | | | | - Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology, Venerology and Allergy, Charité-Universitatsmedizin Berlin, corporate member of Freie Universitaet Berlin, Humboldt-Universitaet zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | | | - Susana Perez
- Centro de Investigaciones Tecnológicas, Biomedicas y Medioambientales, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Samandhy Cedeño
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | - Marco Antonio Fernández
- Flow Cytometry Facility, Germans Trias i Pujol Research Institute (IGTP), Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | | | | | | | - Eric Pedruzzi
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMIParis), Paris, France
| | - Olivia Bonduelle
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMIParis), Paris, France
| | - Beatriz Mothe
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain.,Fundació Lluita contra la Sida, Infectious Diseases Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Carmen E Gòmez
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Mariano Esteban
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Felipe Garcia
- Infectious Diseases Department, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - Javier R Lama
- Asociacion Civil Impacta Salud y Educacion, Lima, Peru
| | - Christian Brander
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain.,Faculty of Medicine, Universitat de Vic-Central de Catalunya (UVic-UCC), Vic, Spain.,Institució Catalana de Recerca I Estudis Avançats (ICREA), Barcelona, Spain
| | - Behazine Combadiere
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMIParis), Paris, France
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Zheng HH, Wang LQ, Fu PF, Zheng LL, Chen HY, Liu F. Characterization of a recombinant pseudorabies virus expressing porcine parvovirus VP2 protein and porcine IL-6. Virol J 2020; 17:19. [PMID: 32014014 PMCID: PMC6998180 DOI: 10.1186/s12985-020-1292-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/23/2020] [Indexed: 12/18/2022] Open
Abstract
Background Porcine parvovirus (PPV) and pseudorabies virus (PRV) are the important etiological agents of swine infectious diseases, resulting in huge economic losses to the Chinese swine industry. Interleukin-6 (IL-6) has the roles to support host immune response to infections as a pleiotropic cytokine. It is essential to construct a live attenuated vaccine-based recombinant PRV that expresses PPV VP2 protein and porcine IL-6 for prevention and control of PRV and PPV. Methods The recombinant plasmid, pGVP2-IL6, was constructed by porcine IL-6 gene substituting for EGFP gene of the PRV transfer plasmid pGVP2-EGFP containing VP2 gene of PPV. Plasmid pGVP2-IL6 was transfected into swine testicle cells pre-infected with the virus rPRV-VP2-EGFP strain through homologous recombination and plaque purification to generate a recombinant virus rPRV-VP2-IL6. The recombinant PRV was further identified by PCR and DNA sequencing, and the expression of the VP2 protein and porcine IL-6 was analyzed by reverse transcription-PCR (RT-PCR) and Western blot. The virus titer was calculated according to Reed and Muench method. The immunogenicity of the recombinant virus was preliminarily evaluated in mice by intramuscular administration twice with the rPRV-VP2-IL6 at 4-week intervals. Results A recombinant virus rPRV-VP2-IL6 was successfully constructed and confirmed in this study. The properties of rPRV-VP2-IL6 were similar to the parental virus HB98 in terms of growth curve, morphogenesis and virus plaque sizes, and rPRV-VP2-IL6 was proliferated in different cell types. It induced specific antibodies against PPV as well as a strong increase of PPV-specific lymphocyte proliferation responses in mice immunized with rPRV-VP2-IL6, and provided partial protection against the virulent PPV challenge. rPRV-VP2-IL6 also induced a high level of neutralizing antibodies against PRV, and significantly reduced the mortality rate of (1 of 10) following virulent PRV challenge compared with the control (10 of 10). Conclusions The recombinant rPRV-VP2-IL6 might be a potential candidate vaccine against PRV and PPV infections in pigs.
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Affiliation(s)
- Hui-Hua Zheng
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China
| | - Lin-Qing Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China.,Department of Life Science, Zhengzhou Normal University, Zhengzhou, 450044, Henan Province, People's Republic of China
| | - Peng-Fei Fu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China
| | - Lan-Lan Zheng
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China
| | - Hong-Ying Chen
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China.
| | - Fang Liu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengdong New District Longzi Lake#15, 450046, Zhengzhou, Henan Province, People's Republic of China.
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Rezaei T, Khalili S, Baradaran B, Mosafer J, Rezaei S, Mokhtarzadeh A, de la Guardia M. Recent advances on HIV DNA vaccines development: Stepwise improvements to clinical trials. J Control Release 2019; 316:116-137. [PMID: 31669566 DOI: 10.1016/j.jconrel.2019.10.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 01/10/2023]
Abstract
According to WHO (World Health Organization) reports, more than 770,000 people died from HIV and almost 1.7 million people becoming newly infected in the worldwide in 2018. Therefore, many attempts should be done to produce a forceful vaccine to control the AIDS. DNA-based vaccines have been investigated for HIV vaccination by researches during the recent 20 years. The DNA vaccines are novel approach for induction of both type of immune responses (cellular and humoral) in the host cells and have many advantages including high stability, fast and easy of fabrication and absence of severe side effects when compared with other vaccination methods. Recent studies have been focused on vaccine design, immune responses and on the use of adjuvants as a promising strategy for increased level of responses, delivery approaches by viral and non-viral methods and vector design for different antigens of HIV virus. In this review, we outlined the aforementioned advances on HIV DNA vaccines. Then we described the future trends in clinical trials as a strong strategy even in healthy volunteers and the potential developments in control and prevention of HIV.
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Affiliation(s)
- Tayebeh Rezaei
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biotechnology, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Saeed Khalili
- Department of Biology Sciences, Faculty of Sciences, Shahid Rajee Teacher Training University, Tehran, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jafar Mosafer
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Sarah Rezaei
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biotechnology, Higher Education Institute of Rab-Rashid, Tabriz, Iran.
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain.
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Su LK, Yu F, Li ZF, Zeng C, Xu QA, Fan MW. Intranasal co-delivery of IL-6 gene enhances the immunogenicity of anti-caries DNA vaccine. Acta Pharmacol Sin 2014; 35:592-8. [PMID: 24705100 DOI: 10.1038/aps.2013.184] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/26/2013] [Indexed: 11/09/2022] Open
Abstract
AIM To investigate the effects of co-delivering IL-6 expressing plasmid pCI-IL-6 on the immunogenicity of the anti-caries DNA vaccine pCIA-P, which encodes the surface protein antigen PAc of Streptococcus mutans. METHODS Plasmid pCI-IL-6 was constructed by inserting the murine IL-6 gene into the pCI vector. Expression of IL-6 in vitro was assessed using Western blot analysis. BALB/c mice were intranasally co-immunized with pCIA-P plus pCI-IL-6 on d 0 and 14. Anti-PAc IgG and secretory IgA (sIgA) were assessed by ELISA. Splenocytes from the mice were re-stimulated with the PAc protein, and IFN-γ and IL-4 production was measured using ELISA. Splenocyte proliferation was analyzed with flow cytometry. Rats were similarly immunized, and dental caries scores were determined using the Keyes method. RESULTS Marked expression of IL-6 was found in COS-7 cells transfected with pCI-IL-6. In the pCI-IL-6 co-immunized mice, the specific IgG antibodies in serum and sIgA antibodies in saliva were significantly higher than those in the control mice at weeks 4 and 8. Moreover, the secretion of IFN-γ from splenocytes in response to re-stimulation with PAc protein was significantly higher in the pCI-IL-6 co-immunized mice than that in the control mice, whereas the secretion of IL-4 had no significant difference. The proliferation of splenocytes from the pCI-IL-6 co-immunized mice was significantly higher than that from the mice immunized with pCIA-P and pCI vector. In the rat caries model, the pCI-IL-6 co-immunization rats displayed lower caries scores than the control rats. CONCLUSION Intranasal co-delivery of IL-6 gene significantly enhances the immunogenicity of the anti-caries DNA vaccine.
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Du J, Wu X, Long F, Wen J, Hao W, Chen R, Kong X, Qian M, Jiang W. Improvement in efficacy of DNA vaccine encoding HIV-1 Vif by LIGHT gene adjuvant. Viral Immunol 2013; 26:68-74. [PMID: 23330678 DOI: 10.1089/vim.2012.0073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
DNA vaccine can induce the prolonged immune responses against the encoded antigen with the appropriate adjuvant. To study the immunogenicity of the HIV-1 vif DNA vaccine in inducing the humoral and cellular immune responses and the immunoadjuvant effect of LIGHT, which is a member of TNF superfamily and can stimulate the proliferation of naïve T cells as a co-stimulatory molecule, DNA vaccine plasmid pcDNA-Vif was constructed by inserting HIV-1 vif gene into the downstream of CMV promoter in eukaryotic expression vector pcDNA3.1(+). In vitro expression of HIV-1 Vif in pcDNA-Vif-transfected HeLa cells was confirmed in transcriptional and protein level by RT-PCR and Western blot, respectively. After BALB/c mice were injected muscularly with DNA vaccines for three times, the specific immune responses were analyzed. The data showed that anti-Vif antibody response, Vif-specific T cell proliferation, and CTL activities were induced in the mice that were inoculated with HIV-1 vif DNA vaccine plasmid. Interestingly, stronger humoral and cellular immune responses were detected in mice that were immunized with plasmid pcDNA-Vif and pcDNA-LIGHT together compared to the single immunization with plasmid pcDNA-Vif alone. Together, the results of the study suggest that candidate HIV-1 DNA vaccine can elicit HIV-1 Vif-specific immune responses in mice and that LIGHT plays the role of immunoadjuvant in co-immunization with DNA vaccine.
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Affiliation(s)
- Jiani Du
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, China
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7
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Zhang W, Yin Z, Liu N, Yang T, Wang J, Bu Z, Wu D. DNA-chitosan nanoparticles improve DNA vaccine-elicited immunity against Newcastle disease virus through shuttling chicken interleukin-2 gene. J Microencapsul 2011; 27:693-702. [PMID: 21034363 DOI: 10.3109/02652048.2010.507881] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, pCAGG-ChIL2 plasmid DNA containing the chicken interleukin-2 (ChIL-2) gene was used to prepare DNA-chitosan nanoparticles (CNPs). The CNPs prepared were spherical, with mean diameters between 100 and 200 nm, have a positive surface charge, and could protect DNA against DNase I degradation. The CNPs prepared were successfully used to transfect the Df-1 cell line with almost no cytotoxicity. CNPs prepared at an amino group to phosphate group ratio (N/P ratio) of 16 provided the highest transfection efficiency (1.1%) in medium with a pH of 6.5. When pCAGG-ChIL2 CNPs were administered to chickens simultaneously with a DNA vaccine against Newcastle disease virus (NDV), haemagglutination inhibition antibody titers and serum interferon-γ (IFN-γ) levels were significantly higher than in chickens immunised with the NDV DNA vaccine alone (p < 0.05). The results demonstrate that pCAGG-ChIL2 CNPs improve DNA vaccine-elicited immunity against NDV challenge.
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Affiliation(s)
- Wenlong Zhang
- The Key Laboratory of Veterinary Public Health, Ministry of Agriculture, National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
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8
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Yang X, Sun WK, Chen WL, Chen JL, Wan XP, Zhang H, Yang X, Cai L, Wang ZZ, Lv XB, Wang HN, Li JL, Gao R. Promotion of the immunity of piglets to Hog cholera vaccine induced by shuffled pig interleukin-2 gene and CpG immunostimulatory sequences encapsulated in chitosan nanoparticles. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.provac.2010.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Evaluation of humoral and cellular immune responses against HSV-1 using genetic immunization by filamentous phage particles: a comparative approach to conventional DNA vaccine. J Virol Methods 2009; 163:440-4. [PMID: 19903497 DOI: 10.1016/j.jviromet.2009.11.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2009] [Revised: 10/31/2009] [Accepted: 11/03/2009] [Indexed: 01/09/2023]
Abstract
Phage display is based on expressing peptides as a fusion to one of the phage coat proteins. To date, many vaccine researches have been conducted to display immunogenic peptides or mimotopes of various pathogens and tumors on the surface of filamentous bacteriophages. In recent years as a new approach to application of phages, recombinant bacteriophage lambda particles were used as DNA delivery vehicles to mammalian cells. In this study, recombinant filamentous phage whole particles were used for vaccination of mice. BALB/c mice were inoculated with filamentous phage particles containing expression cassette of Herpes simplex virus 1 (HSV-1) glycoprotein D that has essential roles in the virus attachment and entry. Both humoral and cellular immune responses were measured in the immunized mice and compared to conventional DNA vaccination. A dose-response relationship was observed in both arms of immune responses induced by recombinant filamentous phage inoculation. The results were similar to those from DNA vaccination. Filamentous phages can be considered as suitable alternative candidate vaccines because of easier and more cost-effective production and purification over plasmid DNA or bacteriophage lambda particles.
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Climent N, Martinez-Navio JM, Gil C, Garcia F, Rovira C, Hurtado C, Miralles L, Gatell JM, Gallart T, Mallol J, Lluis C, Franco R. Adenosine deaminase enhances T-cell response elicited by dendritic cells loaded with inactivated HIV. Immunol Cell Biol 2009; 87:634-9. [PMID: 19668260 DOI: 10.1038/icb.2009.53] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
As host immunological defenses are impaired during HIV infection, it is difficult to elicit good responses when attempting to develop therapeutic vaccines against HIV. To try to solve this situation, adjuvants, particularly cytokines, are currently under evaluation. Owing to the fact that adenosine deaminase (ADA) is a member of the family of growth factor with deaminase activity, we tested whether it could improve immune responses in the development of HIV dendritic-cell-based therapeutic vaccines. A co-culture model approach has been used to test the usefulness of ADA as adjuvant. Monocyte-derived dendritic cells from HIV-infected patients were pulsed with inactivated HIV, matured and co-cultured with autologous T cells. Addition of ADA to the co-cultures resulted in enhanced CD4(+) and CD8(+) T-cell proliferation and robust ADA-induced increase in cytokine production (IFN-gamma, TNF-alpha and IL-6). As IFN-gamma, TNF-alpha and IL-6 promote the Th1 versus Th2 phenotype and improve T helper proliferation responses and antigen-specific CTL responses ADA may be considered a promising candidate for therapeutic vaccine adjuvant.
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Jiang W, Ren L, Jin N. HIV-1 DNA vaccine efficacy is enhanced by coadministration with plasmid encoding IFN-α. J Virol Methods 2007; 146:266-73. [PMID: 17868910 DOI: 10.1016/j.jviromet.2007.07.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 06/12/2007] [Accepted: 07/10/2007] [Indexed: 10/22/2022]
Abstract
Numerous strategies have been employed in an attempt to improve the immunogenicity and efficacy of nucleic acid vaccines. In the present study, the immunogenicity in the induction of humoral and cellular immune responses to HIV-1 DNA vaccine expressing a chimeric gene of gag and gp120 and the adjuvant effect of IFN-alpha on HIV-1 DNA vaccine were studied in a murine model. The DNA vaccine plasmid pVAX1-gag-gp120 and eukaryotic expression plasmid pVAX1-IFN were constructed by inserting the chimeric gene of gag and gp120 of HIV-1 and IFN-alpha into the downstream of CMV promoter of eukaryotic expression vector pVAX1, respectively. In vitro expression detected by RT-PCR and Western blotting showed that the genes of interest could be expressed in transfected HeLa cells. After BALB/c mice were immunized by three intramuscular inoculations of the HIV-1 DNA vaccine plasmids alone or in combination with IFN-alpha expression plasmids, the different levels of anti-HIV-1 humoral and cellular responses were measured comparable to the control groups immunized with pVAX1-IFN, parent plasmid pVAX1 or PBS. The percentage of CD3+CD4+ and CD3+CD8+ subgroups of spleen T lymphocytes and the specific cytotoxicity activities of splenic CTLs in the coinoculation group were significantly higher than those in the separate inoculation group, and an enhancement of antibody response was also observed in the coinoculation group compared with the separate inoculation group. Take together, coadministration of HIV-1 DNA vaccine plasmids and IFN-alpha expression plasmids can elicit stronger humoral and cellular immune responses in mice than HIV-1 DNA vaccine plasmids alone, and IFN-alpha can be an effective immunological adjuvant in DNA vaccination against HIV-1.
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Affiliation(s)
- Wenzheng Jiang
- Genetic Engineering Key Laboratory of PLA, The Eleventh Institute of Academy of Military Medical Sciences of PLA, Changchun 130062, People's Republic of China
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12
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Xie Z, Li H, Chen J, Zhang HB, Wang YY, Chen Q, Zhao ZZ, Cheng C, Zhang H, Yang Y, Wang HN, Gao R. Shuffling of pig interleukin-2 gene and its enhancing of immunity in mice to Pasteurella multocida vaccine. Vaccine 2007; 25:8163-71. [DOI: 10.1016/j.vaccine.2007.09.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2007] [Revised: 09/11/2007] [Accepted: 09/13/2007] [Indexed: 11/29/2022]
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13
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Halabe Bucay A. Clinical hypothesis: Application of AIDS vaccines together with thyroid hormones to increase their immunogenic effect. Vaccine 2007; 25:6292-3. [PMID: 17570565 DOI: 10.1016/j.vaccine.2007.05.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Accepted: 05/12/2007] [Indexed: 10/23/2022]
Abstract
To date, none of the vaccines that have been developed to prevent AIDS have proven to be sufficiently effective, despite the human immunodeficiency virus itself having been used as a vector as well as viral fragments, and genetic material from the virus itself and that the vaccines available have been administered with different adjuvants, including cytokines. This paper presents the hypothesis that if AIDS vaccines are administered together with thyroid hormones, the cellular and humoral immune responses will increase and the patients that receive these together will present much better immunogenicity against AIDS.
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Affiliation(s)
- Alberto Halabe Bucay
- Hospital Angeles Lomas, Av Vialidad de la Barranca s/n, Huixquilucan, 52763, Mexico
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Cristillo AD, Lisziewicz J, He L, Lori F, Galmin L, Trocio JN, Unangst T, Whitman L, Hudacik L, Bakare N, Whitney S, Restrepo S, Suschak J, Ferrari MG, Chung HK, Kalyanaraman VS, Markham P, Pal R. HIV-1 prophylactic vaccine comprised of topical DermaVir prime and protein boost elicits cellular immune responses and controls pathogenic R5 SHIV162P3. Virology 2007; 366:197-211. [PMID: 17499328 DOI: 10.1016/j.virol.2007.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Revised: 03/29/2007] [Accepted: 04/11/2007] [Indexed: 11/30/2022]
Abstract
Topical DNA vaccination (DermaVir) facilitates antigen presentation to naive T cells. DermaVir immunization in mice, using HIV-1 Env and Gag, elicited cellular immune responses. Boosting with HIV-1 gp120 Env and p41 Gag augmented Th1 cytokine levels. Intramuscular DNA administration was less efficient in priming antigen-specific cytokine production and memory T cells. In rhesus macaques, DermaVir immunization induced Gag- and Env-specific Th1 and Th2 cytokines and generation of memory T cells. Boosting of DermaVir-primed serum antibody levels was noted following gp140(SHIV89.6P)/p27(SIV) immunization. Rectal challenge with pathogenic R5-tropic SHIV162P3 resulted in control of plasma viremia (4/5 animals) that was reflected in jejunum, colon and mesenteric lymph nodes. An inverse correlation was found between Gag- and Env-specific central memory T cell responses on the day of challenge and plasma viremia at set point. Overall, the topical DermaVir/protein vaccination yields central memory T cell responses and facilitates control of pathogenic SHIV infection.
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Affiliation(s)
- Anthony D Cristillo
- Advanced BioScience Laboratories, Inc., 5510 Nicholson Lane, Kensington, MD 20895, USA.
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