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https://www.readbyqxmd.com/read/28532811/bovine-vaccinia-inactivated-vaccinia-virus-vaccine-induces-protection-in-murine-model
#1
Ana Carolina Diniz Matos, Maria Isabel Maldonado Coelho Guedes, Izabelle Silva Rehfeld, Erica Azevedo Costa, Aristoteles Gomes Costa, Natalia Lopes da Silva, Andrey Pereira Lage, Zélia Inês Portela Lobato
Bovine vaccinia (BV), caused by Vaccinia virus (VACV), is a zoonosis characterized by exanthematous lesions on the teats of dairy cows and the milkers' hands. Since 1999, due to the occurrence of many BV outbreaks in dairy farms across all Brazilian regions, there is a need to improve the control and prevention measures of the disease. Vaccination is one of the major tools to prevent viral diseases, and it could be an alternative for BV prevention. The main objective of this study was the development of vaccine formulations against BV using the inactivated VACV strain GP2 as antigen combined with different adjuvants...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28515346/the-novel-complex-combination-of-alum-cpg-odn-and-hh2-as-adjuvant-in-cancer-vaccine-effectively-suppresses-tumor-growth-in-vivo
#2
Yaomei Tian, Meng Li, Chaoheng Yu, Rui Zhang, Xueyan Zhang, Rong Huang, Lian Lu, Fengjiao Yuan, Yingzi Fan, Bailing Zhou, Ke Men, Heng Xu, Li Yang
Single-component adjuvant is prone to eliciting a specific type of Th1 or Th2 response. So, the development of combinatorial adjuvants inducing a robust mixed Th1/Th2 response is a promising vaccination strategy against cancer. Here, we describe a novel combination of aluminum salts (alum), CpG oligodeoxynucleotide (CpG) and innate defense regulator peptide HH2 for improving anti-tumor immune responses. The CpG-HH2 complex significantly enhanced the production of IFN-γ, TNF-α and IL-1β, promoted the uptake of antigen and strengthened the activation of p38, Erk1/2 and NF-κB in vitro, compared to CpG or HH2 alone...
April 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28510418/conjugation-reaction-with-8-arm-peg-markedly-improves-the-immunogenicity-of-mycobacterium-tuberculosis-cfp10-tb10-4-fusion-protein
#3
Xiaowei Sun, Weili Yu, Quanhai Pang, Tao Hu
Mycobacterium tuberculosis (Mtb) is a serious fatal pathogen responsible for tuberculosis (TB). Effective vaccination is highly desired for immunoprotection against Mtb infection. CFP10 and TB10.4 are two important immunodominant Mtb-secreted protein antigens, which suffer from poor immunogenicity. Thus, an antigen delivery system and adjuvants are needed to improve the immunogenicity of the two proteins. CFP10 and TB10.4 are two Mtb-secreted immunodominant protein antigens. A CFP10-TB10.4 fusion protein (CT) was used as the antigen...
May 16, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28495657/outer-membrane-vesicles-extracted-from-neisseria-meningitidis-serogroup-x-for-prevention-of-meningococcal-disease-in-africa
#4
Reinaldo Acevedo, Caridad Zayas, Gunnstein Norheim, Sonsire Fernández, Barbara Cedré, Yisabel Aranguren, Maribel Cuello, Yaimara Rodriguez, Humberto González, Aleida Mandiarote, Marylin Pérez, Maritza Hernández, Mabel Hernández-Cedeño, Domingo González, Sverre-Henning Brorson, Einar Rosenqvist, Lisbeth Naess, Gro Tunheim, Daniel Cardoso, Luis García
Meningococcal disease is caused mainly by serogroups A, B, C, Y, W of N. meningitidis. However, numerous cases of meningitis caused by serogroup X N. meningitidis (MenX) have recently been reported in several African countries. Currently, there are no licensed vaccines against this pathogen and most of the MenX cases have been caused by meningococci from clonal complex (c.c) 181. Detergent extracted meningococcal outer membrane vesicle (dOMV) vaccines have previously shown to be safe and effective against epidemics of serogroup B meningococcal disease in all age groups...
May 8, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28456726/optimization-of-the-production-process-and-characterization-of-the-yeast-expressed-sars-cov-recombinant-receptor-binding-domain-rbd219-n1-a-sars-vaccine-candidate
#5
Wen-Hsiang Chen, Shivali M Chag, Mohan V Poongavanam, Amadeo B Biter, Ebe A Ewere, Wanderson Rezende, Christopher A Seid, Elissa M Hudspeth, Jeroen Pollet, C Patrick McAtee, Ulrich Strych, Maria Elena Bottazzi, Peter J Hotez
From 2002 to 2003, a global pandemic of severe acute respiratory syndrome (SARS) spread to five continents and caused 8,000 respiratory infections and 800 deaths. To ameliorate the effects of future outbreaks as well as to prepare for biodefense, a process for the production of a recombinant protein vaccine candidate is under development. Previously, we reported the 5-L scale expression and purification of a promising recombinant SARS vaccine candidate, RBD219-N1, the 218-amino acid residue receptor-binding domain (RBD) of SARS coronavirus expressed in yeast- Pichia pastoris X-33...
April 26, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28413427/immunogenicity-and-safety-of-a-respiratory-syncytial-virus-fusion-protein-rsv-f-nanoparticle-vaccine-in-older-adults
#6
Louis Fries, Vivek Shinde, Jeffrey J Stoddard, D Nigel Thomas, Eloi Kpamegan, Hanxin Lu, Gale Smith, Somia P Hickman, Pedro Piedra, Gregory M Glenn
BACKGROUND: A preventative strategy for Respiratory Syncytial Virus (RSV) infection constitutes an under-recognized unmet medical need among older adults. Four formulations of a novel recombinant RSV F nanoparticle vaccine (60 or 90 μg RSV F protein, with or without aluminum phosphate adjuvant) administered concurrently with a licensed inactivated trivalent influenza vaccine (TIV) in older adult subjects were evaluated for safety and immunogenicity in this randomized, observer-blinded study...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28381638/antibody-epitopes-identified-in-critical-regions-of-dengue-virus-nonstructural-1-protein-in-mouse-vaccination-and-natural-human-infections
#7
Tomer Hertz, P Robert Beatty, Zachary MacMillen, Sarah S Killingbeck, Chunling Wang, Eva Harris
Dengue is a global public health problem and is caused by four dengue virus (DENV) serotypes (DENV1-4). A major challenge in dengue vaccine development is that cross-reactive anti-DENV Abs can be protective or potentially increase disease via Ab-dependent enhancement. DENV nonstructural protein 1 (NS1) has long been considered a vaccine candidate as it avoids Ab-dependent enhancement. In this study, we evaluated survival to challenge in a lethal DENV vascular leak model in mice immunized with NS1 combined with aluminum and magnesium hydroxide, monophosphoryl lipid A + AddaVax, or Sigma adjuvant system+CpG DNA, compared with mice infected with a sublethal dose of DENV2 and mice immunized with OVA (negative control)...
May 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28370521/efficacy-comparison-of-adjuvants-in-pcrv-vaccine-against-pseudomonas-aeruginosa-pneumonia
#8
COMPARATIVE STUDY
Saeko Hamaoka, Yoshifumi Naito, Hideya Katoh, Masaru Shimizu, Mao Kinoshita, Koichi Akiyama, Atsushi Kainuma, Kiyoshi Moriyama, Ken J Ishii, Teiji Sawa
Vaccination against the type III secretion system of P. aeruginosa is a potential prophylactic strategy for reducing the incidence and improving the poor prognosis of P. aeruginosa pneumonia. In this study, the efficacies of three different adjuvants, Freund's adjuvant (FA), aluminum hydroxide (alum) and CpG oligodeoxynucleotide (ODN), were examined from the viewpoint of inducing PcrV-specific immunity against virulent P. aeruginosa. Mice that had been immunized intraperitoneally with recombinant PcrV formulated with one of the above adjuvants were challenged intratracheally with a lethal dose of P...
February 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28340105/morin-stain-detects-aluminum-containing-macrophages-in-macrophagic-myofasciitis-and-vaccination-granuloma-with-high-sensitivity-and-specificity
#9
Rati Chkheidze, Dennis K Burns, Charles L White, Diana Castro, Julie Fuller, Chunyu Cai
Macrophagic myofasciitis (MMF) is an inflammatory condition associated with the intramuscular (i.m.) injection of aluminum adjuvant-containing vaccines. It is clinically characterized by myalgia, weakness, and chronic fatigue and histologically by aggregates of cohesive macrophages with abundant basophilic, periodic acid-Schiff (PAS)-positive, diastase-resistant granules that percolate through the peri- and endomysium without eliciting substantial myofiber damage. The definitive diagnosis of MMF requires demonstration of aluminum within these macrophages...
April 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28297571/prolongation-of-cardiac-allograft-survival-by-endometrial-regenerative-cells-focusing-on-b-cell-responses
#10
Xiaoxi Xu, Xiaochun Li, Xiangying Gu, Bai Zhang, Weijun Tian, Hongqiu Han, Peng Sun, Caigan Du, Hao Wang
Endometrial regenerative cells (ERCs) have been recently evaluated as an attractive candidate source for emerging stem cell therapies in immunosuppression, but their role in immunoregulation is not fully understood. The present study was designed to investigate their effects, especially on B-cell responses in heart transplantation. In this study, ERCs were noninvasively obtained from menstrual blood. Heart transplantation was performed between C57BL/6 (H-2(b) ) donor mice and BALB/c (H-2(d) ) recipients. B-cell activation and antibody levels were determined using fluorescence-activated cell sorting, enzyme-linked immunosorbent assay and ELISpot...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28296763/evaluating-the-immunogenicity-and-safety-of-a-biondvax-developed-universal-influenza-vaccine-multimeric-001-either-as-a-standalone-vaccine-or-as-a-primer-to-h5n1-influenza-vaccine-phase-iib-study-protocol
#11
RANDOMIZED CONTROLLED TRIAL
Eva van Doorn, Heng Liu, Tamar Ben-Yedidia, Shimon Hassin, Ildiko Visontai, Stephen Norley, Henderik W Frijlink, Eelko Hak
INTRODUCTION: Influenza is a major respiratory viral infection of humans with high mortality and morbidity rates and profound economic impact. Although influenza vaccines are generally updated yearly to match the viruses expected in the coming season, genetic mutation and reassortment can result in unexpected novel strains. Therefore, it is important to develop universal vaccines inducing protective immunity to such strains before they appear. This clinical trial is designed to evaluate the safety and immunogenicity of Multimeric-001 (M-001), which contains conserved epitopes of influenza A and B...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28289411/immunogenicity-of-a-bivalent-adjuvanted-glycoconjugate-vaccine-against-salmonella-typhimurium-and-salmonella-enteritidis
#12
Fabio Fiorino, Simona Rondini, Francesca Micoli, Luisa Lanzilao, Renzo Alfini, Francesca Mancini, Calman A MacLennan, Donata Medaglini
Salmonella enterica serovars Typhimurium and Enteritidis are the predominant causes of invasive non-typhoidal Salmonella (iNTS) disease. Considering the co-endemicity of S. Typhimurium and S. Enteritidis, a bivalent vaccine formulation against both pathogens is necessary for protection against iNTS disease, thus investigation of glycoconjugate combination is required. In the present work, we investigated the immune responses induced by S. Typhimurium and S. Enteritidis monovalent and bivalent glycoconjugate vaccines adjuvanted with aluminum hydroxide (alum) only or in combination with cytosine-phosphorothioate-guanine oligodeoxynucleotide (CpG)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28283948/evaluation-of-the-potency-neutralizing-antibody-response-and-stability-of-a-recombinant-fusion-protein-vaccine-for-streptococcus-pyogenes
#13
E Burlet, H HogenEsch, A Dunham, G Morefield
Streptococcus pyogenes or group A streptococcus (GAS) is a Gram-positive bacterium that can cause a wide range of diseases, including pharyngitis, impetigo, scarlet fever, necrotizing fasciitis, rheumatic fever, and streptococcal toxic shock syndrome. Despite the increasing burden on global health caused by GAS, there is currently no licensed vaccine available. In this study, we evaluated immunogenicity, induction of neutralizing antibodies, and stability of a new recombinant fusion protein vaccine that targets infections from GAS...
May 2017: AAPS Journal
https://www.readbyqxmd.com/read/28281860/a-recombinant-multi-epitope-protein-mep1-elicits-efficient-long-term-immune-responses-against-hiv-1-infection
#14
Yi Yang, Qing Zhu, Weilai Sun, Jingjing Guo, Xiuzhe Ning, Qiao Li, Yan Guo, Junfeng Li, Zhihua Kou, Yusen Zhou
The effective protective HIV vaccine should elicit either protective antibodies or effective T cell response, or both. To improve the efficacy of HIV-1 vaccines, HLA polymorphism and HIV-1 diversity are 2 key factors to be considered for vaccine development. In this study, we expressed a recombinant multi-epitope protein MEP1 which has the same amino acid sequence as a DNA vaccine for Chinese population in our previous report. We found that MEP1 alone could elicit moderate levels of humoral and cellular immune responses, but these responses could not provide protection from challenge with a recombinant virus rTTV-lucgag, which expresses Gag of HIV-1 CRF_07BC...
February 16, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28257301/adjuvants-tailoring-humoral-immune-responses
#15
M Juliana McElrath
PURPOSE OF REVIEW: The development and availability of new-generation adjuvants beyond aluminum and emulsion formulations, together with a deeper understanding of the mechanistic role of adjuvant formulations in stimulating innate immunity and offer opportunities to improve candidate vaccine designs intended to protect against HIV-1 acquisition. RECENT FINDINGS: Currently, major efforts in vaccine development focus on improving prime-boost vaccine regimens to enhance efficacy beyond 31% observed in the RV144 phase 3 study and to develop a pathway to induce broadly reactive HIV neutralizing antibodies...
May 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28222998/dynamics-of-apc-recruitment-at-the-site-of-injection-following-injection-of-vaccine-adjuvants
#16
Susan van Aalst, Irene Stephanie Ludwig, Peter Johannes Sylvester van Kooten, Ruurd van der Zee, Willem van Eden, Femke Broere
Vaccines often contain adjuvants to strengthen the response to the vaccine antigen. However, their modes of action at the site of injection (SOI) are poorly understood. Therefore, we assessed the local effects of adjuvant on the innate immune system in mice. We investigated the safe, widely used adjuvants MF59 and aluminum hydroxide (alum), as well as trehalose-6,6'-dibehenate (TDB), Complete Freund's Adjuvant (CFA) and the Toll-Like-Receptor-ligands lipopolysaccharide (LPS) and Pam3CysSerLys4 (Pam3CSK4). We assessed muscle immune cell infiltration after adjuvant injection and observed 16h post immunization (hpi) an increased influx with CFA, MF59 and TDB, but not with alum, LPS or Pam3CSK4...
February 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28220116/cpg-odn-shapes-alum-adjuvant-activity-signaling-via-myd88-and-il-10
#17
Luciana Mirotti, Ricardo Wesley Alberca Custódio, Eliane Gomes, Florencia Rammauro, Eliseu Frank de Araujo, Vera Lucia Garcia Calich, Momtchilo Russo
Aluminum-containing adjuvants usually referred as Alum are considered as T helper type-2 (Th2) adjuvants, while agonists of toll-like receptors (TLRs) are viewed as adjuvants that favor Th1/Th17 immunity. Alum has been used in numerous vaccine formulations; however, its undesired pro-Th2 adjuvant activity constitutes a caveat for Alum-based vaccines. Combining Alum with TLR-dependent, pro-Th1/Th17 adjuvants might dampen the pro-Th2 activity and improve the effectiveness of vaccine formulations. Here, using the ovalbumin (OVA) model of allergic lung inflammation, we found that sensitization with the synthetic TLR9 agonist, which is composed of oligodeoxynucleotides containing CpG motifs adsorbed to Alum, inhibited the development of OVA-induced lung allergic Th2 responses without shifting toward a Th1 pattern...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28191982/adsorption-of-amino-acids-and-glutamic-acid-based-surfactants-on-imogolite-clays
#18
Massimo Bonini, Alessio Gabbani, Stefano Del Buffa, Francesca Ridi, Piero Baglioni, Romain Bordes, Krister Holmberg
Aluminum oxide surfaces are of utmost interest in different biotech applications, in particular for their use as adjuvants (i.e., booster of the immune response against infectious agents in vaccines production). In this framework, imogolite clays combine the chemical flexibility of an exposed alumina surface with 1D nanostructure. This work reports on the interaction between amino acids and imogolite, using turbidimetry, ζ-potential measurements, and Fourier transform infrared spectroscopy as main characterization tools...
February 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28185741/clearance-of-tritrichomonas-foetus-in-experimentally-infected-heifers-protected-with-vaccines-based-on-killed-t-foetus-with-different-adjuvants
#19
Lumila I Fuchs, Marcelo C Fort, Dora Cano, Carina M Bonetti, Hugo D Giménez, Pablo M Vázquez, Diana Bacigalupe, Javier D Breccia, Carlos M Campero, Jorge A Oyhenart
Tritrichomonas foetus is a flagellated protozoan that causes a sexually transmitted disease in cattle. Trichomonosis is characterized by early abortions, subfertility and a significant decrease in productivity. Vaccine preparations containing whole T. foetus can reduce the time of residence of the pathogen in the host cervix after experimental infection. Here, T. foetus vaccines prepared with different adjuvants were tested, in parallel with a commercial vaccine, for their efficacy to clear the infection. The median time for clearance of infection was 69days in non-immunized animals, 55days in animals treated with aluminum hydroxide, 41days with oil-in-water or saponin based vaccines or with a commercial vaccine and 27days in animals treated with saponin plus aluminum hydroxide...
February 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28166930/polymeric-antigen-blsomp31-in-aluminium-hydroxide-induces-serum-bactericidal-and-opsonic-antibodies-against-brucella-canis-in-dogs
#20
Maria Clausse, Alejandra G Díaz, Romina P Pardo, Vanesa Zylberman, Fernando A Goldbaum, Silvia M Estein
Polymeric antigen BLSOmp31 is an immunogenic vaccine candidate that confers protection against Brucella canis in mice. In this preliminary study, the immunogenicity and safety of BLSOmp31 adsorbed to aluminum hydroxide gel (BLSOmp31-AH) were evaluated in Beagle dogs. In addition, the potential to elicit serum antibodies with complement-dependent bactericidal activity and/or to enhance phagocytosis by neutrophils were analyzed. Dogs were immunized three times with BLSOmp31-AH by subcutaneous route, followed by an annual booster...
February 2017: Veterinary Immunology and Immunopathology
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