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Fathi M, Nezamzadeh R, Abdollahpour-Alitappeh M, Yazdi MH, Khoramabadi N, Mahdavi M. Formulation of a recombinant HIV-1 polytope candidate vaccine with naloxone/alum mixture: induction of multi-cytokine responses with a higher regulatory mechanism. APMIS 2021; 129:480-488. [PMID: 33539574 DOI: 10.1111/apm.13122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 01/31/2021] [Indexed: 11/26/2022]
Abstract
The potency of a vaccine highly depends upon the nature of the adjuvant used. There are a variety of ineffective vaccines, such as HIV-1 vaccine candidates, that need to be optimized with new adjuvant formulations to improve vaccine potency and efficacy. Studies show the potency of naloxone (NLX)/alum mixture in the induction of Th1/Th2 response for vaccine. However, other immunologic patterns inducing by this adjuvant and its immunoregulatory effect is unclear. In this regard, the aim of the present study was to investigate the effect of the NLX/alum mixture, as an adjuvant, on cytokine networks and immunoregulatory activity for an HIV-1 polytope vaccine. BALB/c mice were divided into six groups (n = 6) and immunized subcutaneously with 10 μg of the vaccine formulated with NLX/alum, NLX, alum, and Freund's adjuvants. At the same time, the mice in the control groups received an equal volume of PBS or NLX. The lymphocyte proliferation assay was carried out using the BrdU method. ELISA was used to measure the levels of IFN-γ, IL-2, IL-4, IL-10, IL-12, and IL-17 cytokines, total IgG, as well as IgG1 and IgG2a subtypes in serum samples. Our findings showed that mice receiving the NLX/alum-adjuvanted vaccine exhibited increased antibody levels compared with other groups. In addition, there was a considerable difference in the levels of IgG1, IgG2a, IFN-γ, IL-2, IL-10, IL-12, and IL-17 in mice receiving the NLX/alum-adjuvanted vaccine as compared with other groups. The NLX/alum mixture, as an adjuvant, may have a positive effect on the induction of multi-cytokine responses, as well as the increased level of IL-10, showing its higher immunogenicity with a higher immunoregulatory mechanism.
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Affiliation(s)
- Meimanat Fathi
- Recombinant Vaccine Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Department of Genetic, Islamic Azad University, Damghan Branch, Damghan, Iran.,Department of Cell techniques and Applied Stem Cell Biology, Center for Biotechnology and Biomedicine (BBZ), Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Reza Nezamzadeh
- Department of Genetic, Islamic Azad University, Damghan Branch, Damghan, Iran
| | | | - Mohammad Hossein Yazdi
- Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Khoramabadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mehdi Mahdavi
- Recombinant Vaccine Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran.,Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
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Salmona M, Fourati S, Feghoul L, Scieux C, Thiriez A, Simon F, Resche-Rigon M, LeGoff J. Automated quantification of Epstein-Barr Virus in whole blood of hematopoietic stem cell transplant patients using the Abbott m2000 system. Diagn Microbiol Infect Dis 2016; 85:428-32. [PMID: 27312691 DOI: 10.1016/j.diagmicrobio.2016.04.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 04/17/2016] [Accepted: 04/26/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Accurate quantification of Epstein-Barr virus (EBV) load in blood is essential for the management of post-transplant lymphoproliferative disorders. The automation of DNA extraction and amplification may improve accuracy and reproducibility. We evaluated the EBV PCR Kit V1 with fully automated DNA extraction and amplification on the m2000 system (Abbott assay). METHODOLOGY Conversion factor between copies and international units (IU), lower limit of quantification, imprecision and linearity were determined in a whole blood (WB) matrix. Results from 339 clinical WB specimens were compared with a home-brew real-time PCR assay used in our laboratory (in-house assay). RESULTS The conversion factor between copies and IU was 3.22 copies/IU. The lower limit of quantification (LLQ) was 1000 copies/mL. Intra- and inter-assay coefficients of variation were 3.1% and 7.9% respectively for samples with EBV load higher than the LLQ. The comparison between Abbott assay and in-house assay showed a good concordance (kappa = 0.77). Loads were higher with the Abbott assay (mean difference = 0.62 log10 copies/mL). SIGNIFICANCE The EBV PCR Kit V1 assay on the m2000 system provides a reliable and easy-to-use method for quantification of EBV DNA in WB.
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Affiliation(s)
- Maud Salmona
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France.
| | - Slim Fourati
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
| | - Linda Feghoul
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
| | - Catherine Scieux
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
| | - Aline Thiriez
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
| | - François Simon
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
| | - Matthieu Resche-Rigon
- Univ Paris Diderot, Pres Sorbone Paris Cité, Biostatistics Department, APHP, Hôpital Saint-Louis, Paris, France
| | - Jérôme LeGoff
- Univ Paris Diderot, Pres Sorbone Paris Cité, Inserm U941, APHP, Microbiology laboratory, Hôpital Saint-Louis, Paris, France
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Grewal R, Cucuianu A, Swanepoel C, Dima D, Petrushev B, Pop B, Berindan-Neagoe I, Abayomi EA, Tomuleasa C. The role of microRNAs in the pathogenesis of HIV-related lymphomas. Crit Rev Clin Lab Sci 2015. [PMID: 26218036 DOI: 10.3109/10408363.2015.1030063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The incidence of HIV-related lymphomas (HRLs) is increased by 60-100 times in patients with HIV. When compared to the general population, patients with HRLs often present with extranodal lymphoid proliferation, most frequently of the gastrointestinal tract, central nervous system, liver and bone marrow. MicroRNAs (miRs) are non-coding double-stranded RNA molecules of 18-25 nucleotides that regulate post-translational gene expression by inhibiting translation or promoting degradation of messenger RNA complementary sequences. Before their discovery, tumorigenesis was thought to have been caused by the alteration of protein-coding oncogenes and tumor-suppressor genes, but once identified in B-cell chronic lymphocytic leukemia, miRs function as either oncogenes or tumor-suppressor genes was confirmed in different types of malignancies. Since miRs are clearly involved in tumorigenesis in many cancers, their role in HRLs is now receiving attention. A few studies have been conducted thus far in some HRLs on the involvement of miR in the pathogenesis of lymphoid malignancies. Since B-cell lymphomas arise from various stages of B-cell development in both HIV-infected and HIV-naïve patients, investigators have tried to determine the different miR signatures in B-cell development. As classic immunohistochemistry staining is sometimes not enough for the differential diagnosis of HRLs, in the present review, we have described the potential use of miRs in the prognosis and diagnosis of these diseases.
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Affiliation(s)
- Ravnit Grewal
- a Division of Hematopathology , Tygerberg Academic Hospital , Tygerberg , South Africa
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Sneller MC, Lane HC. HIV/IL-2 and EBV-associated lymphoproliferative diseases: cause and effect or coincidence? HIV Med 2013; 15:1-2. [DOI: 10.1111/hiv.12092] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- MC Sneller
- Laboratory of Immunoregulation; National Institute of Allergy and Infectious Diseases; National Institutes of Health; Bethesda Maryland USA
| | - HC Lane
- Laboratory of Immunoregulation; National Institute of Allergy and Infectious Diseases; National Institutes of Health; Bethesda Maryland USA
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