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Alum adjuvant

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https://www.readbyqxmd.com/read/29147873/comparison-of-the-adjuvanticity-of-two-adjuvant-formulations-containing-de-o-acylated-lipooligosaccharide-on-japanese-encephalitis-vaccine-in-mice
#1
Ara Ko, Seo Ri Wui, Ji In Ryu, Hien Thi Thu Do, Yeon Jeong Lee, Soo Jeong Lim, Inmoo Rhee, Dae Im Jung, Jin-Ah Park, Jung-Ah Choi, Man Ki Song, Na Gyong Lee
Adjuvants are essential vaccine components used to enhance, accelerate, and/or prolong adaptive immunity against specific vaccine antigens. In this study, we compared the adjuvanticity of two adjuvant formulations containing de-O-acylated lipooligosaccharide (dLOS), a toll-like receptor 4 agonist, on the Japanese encephalitis (JE) vaccine in mice. Mice were immunized once or twice at a two-week interval with inactivated JE vaccine in the absence or presence of adjuvant. We found that both the alum- and the liposome-based formulation induced significantly faster and higher serum IgG antibody responses as compared with the non-adjuvanted vaccine after either one or two immunizations...
November 17, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29089195/superior-immunogenicity-of-hcv-envelope-glycoproteins-when-adjuvanted-with-cyclic-di-amp-a-sting-activator-or-archaeosomes
#2
A Landi, J Law, D Hockman, M Logan, K Crawford, C Chen, J Kundu, T Ebensen, C A Guzman, L Deschatelets, L Krishnan, D L J Tyrrell, M Houghton
Three decades after the discovery, hepatitis C virus (HCV) is still the leading cause of liver transplantation and poses a major threat to global health. In spite of recent advances in the development of direct acting antivirals, there is still a need for a prophylactic vaccine to limit the virus spread and protect at-risk populations, especially in developing countries, where the cost of the new treatments may severely limit access. The use of recombinant HCV glycoproteins E1E2 (rE1E2) in combination with the MF59, an oil-in-water emulsion-based adjuvant, has previously been shown to reduce the rate of chronicity in chimpanzees and to induce production of cross-neutralizing antibodies and cellular immune responses in human volunteers...
October 28, 2017: Vaccine
https://www.readbyqxmd.com/read/29079105/immunization-against-full-length-protein-and-peptides-from-the-lutzomyia-longipalpis-sand-fly-salivary-component-maxadilan-protects-against-leishmania-major-infection-in-a-murine-model
#3
William H Wheat, Erik N Arthun, John S Spencer, Daniel P Regan, Richard G Titus, Steven W Dow
Leishmaniasis is an arthropod vectored disease causing considerable human morbidity and mortality. Vaccination remains the most realistic and practical means to interrupt the growing number and diversity of sand fly vectors and reservoirs of Leishmania. Since transmission of Leishmania is achieved exclusively by sand fly vectors via immune-modulating salivary substances, conventional vaccination requiring an unmodified host immune response for success are potentially destined to fail unless immunomodulatory factors are somehow neutralized...
October 24, 2017: Vaccine
https://www.readbyqxmd.com/read/29073215/toxoplasma-gondii-serine-protease-inhibitor-1-a-new-adjuvant-candidate-for-asthma-therapy
#4
Ariadna S Soto, Ignacio M Fenoy, Vanesa R Sanchez, Florencia March, Matías D Perrone Sibilia, María de Los Angeles Aldirico, Mariano S Picchio, Nadia Arcon, Patricio L Acosta, Fernando P Polack, Valentina Martin, Alejandra Goldman
Serine-proteases are important players in the pathogenesis of asthma, promoting inflammation and tissue remodeling. It's also known that many serine protease inhibitors display immunomodulatory properties. TgPI-1 is a Toxoplasma gondii protein that exhibits broad spectrum inhibitory activity against serine proteases. In view of the increased prevalence of atopic disorders and the need to develop new treatment strategies we sought to investigate the potential of TgPI-1 for treating respiratory allergies. For this purpose, we developed a therapeutic experimental model...
2017: PloS One
https://www.readbyqxmd.com/read/29073183/adjuvants-and-the-vaccine-response-to-the-ds-cav1-stabilized-fusion-glycoprotein-of-respiratory-syncytial-virus
#5
Mallika Sastry, Baoshan Zhang, Man Chen, M Gordon Joyce, Wing-Pui Kong, Gwo-Yu Chuang, Kiyoon Ko, Azad Kumar, Chiara Silacci, Michelle Thom, Andres M Salazar, Davide Corti, Antonio Lanzavecchia, Geraldine Taylor, John R Mascola, Barney S Graham, Peter D Kwong
Appropriate adjuvant selection may be essential to optimize the potency and to tailor the immune response of subunit vaccines. To induce protective responses against respiratory syncytial virus (RSV)-a highly prevalent childhood pathogen without a licensed vaccine-we previously engineered a pre-fusion-stabilized trimeric RSV F (pre-F) "DS-Cav1" immunogen, which induced high titer RSV-neutralizing antibodies, in mice and non-human primates, when formulated with adjuvants Poly (I:C) and Poly (IC:LC), respectively...
2017: PloS One
https://www.readbyqxmd.com/read/29067316/active-a%C3%AE-immunotherapy-cad106-in-alzheimer-s-disease-a-phase-2b-study
#6
Rik Vandenberghe, Marie-Emmanuelle Riviere, Angelika Caputo, Judit Sovago, R Paul Maguire, Martin Farlow, Giovanni Marotta, Raquel Sanchez-Valle, Philip Scheltens, J Michael Ryan, Ana Graf
INTRODUCTION: This randomized, double-blind, placebo-controlled, 90-week study assessed safety, tolerability, and immunogenicity of CAD106 with/without adjuvant in patients with mild Alzheimer's disease. METHODS: One hundred twenty-one patients received up to seven intramuscular injections of CAD106 (150 μg or 450 μg) or placebo ± adjuvant over 60 weeks. An amyloid positron emission tomography (PET) substudy was also conducted. RESULTS: CAD106 induced strong serological responses (amyloid-beta [Aβ]-Immunoglobuline G[IgG]) in 55...
January 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/29052227/adjuvant-pretreatment-with-alum-protects-neonatal-mice-in-sepsis-through-myeloid-cell-activation
#7
Jaimar C Rincon, Angela L Cuenca, Steven L Raymond, Brittany Mathias, Dina C Nacionales, Ricardo Ungaro, Philip A Efron, James L Wynn, Lyle L Moldawer, Shawn D Larson
The high mortality in neonatal sepsis has been related to both quantitative and qualitative differences in host protective immunity. Especially in the premature neonate where outcomes from sepsis are so dismal, pretreatment strategies to prevent sepsis have received inadequate consideration. Aluminum-based adjuvants (alum) are currently used in many pediatric vaccines, but their use as an innate immune stimulant alone has not been well studied. We asked whether pre-treatment with alum adjuvant alone could improve outcome and host innate immunity in neonatal mice given polymicrobial sepsis...
October 20, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29042573/efficient-induction-of-comprehensive-immune-responses-to-control-pathogenic-e-coli-by-clay-nano-adjuvant-with-the-moderate-size-and-surface-charge
#8
Weiyu Chen, Huali Zuo, Timothy J Mahony, Bing Zhang, Barbara Rolfe, Zhi Ping Xu
In recent decades, diseases caused by pathogenic Escherichia coli (E. coli), enterohaemorrhagic E. coli (EHEC) O26 have been increasingly reported worldwide, which are as severe as those caused by EHEC strain O157:H7 and require effective intervention strategies. Herein, we report the application of clay nanoparticles, i.e. hectorites as effective nano-adjuvants for vaccination against EHEC O26 colonization. We show that medium size HEC (hectorite, around 73~77 nm diameter) is able to induce efficient humoral and cellular immune responses against EHEC antigen - intimin β (IB), which are significantly higher than those triggered by commercially used adjuvants - QuilA and Alum...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036651/aureobasidium-pullulans-cultured-fluid-induces-il-18-production-leading-to-th1-polarization-during-influenza-a-virus-infection
#9
Daisuke Fujikura, Daisuke Muramatsu, Kochi Toyomane, Satoko Chiba, Takuji Daito, Atsushi Iwai, Takahisa Kouwaki, Masaaki Okamoto, Hideaki Higashi, Hiroshi Kida, Hiroyuki Oshiumi
Several microbial molecules with pathogen-associated molecular patterns stimulate host innate immune responses. The innate immune system plays a crucial role in activating acquired immune response via cytokine production and antigen presentation. Previous studies have shown that Aureobasidium pullulans-cultured fluid (AP-CF), which contains β-glucan, exhibits adjuvant activity and renders mice resistance to influenza A virus infection; however, the underlying mechanism remains elusive. In this study, we investigated the innate immune response to AP-CF...
October 3, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/29021402/hiv-exposed-infants-vaccinated-with-a-mf59-rgp120-vaccine-have-higher-magnitude-anti-v1v2-igg-responses-than-adults-immunized-with-the-same-vaccine
#10
Erin P McGuire, Youyi Fong, Christopher Toote, Coleen K Cunningham, Elizabeth J McFarland, William Borkowsky, Susan Barnett, Hannah L Itell, Amit Kumar, Glenda Gray, M Julianna McElrath, Georgia D Tomaras, Sallie R Permar, Genevieve G Fouda
In the RV144 vaccine trial, IgG responses against the HIV envelope variable loops 1 and 2 (V1V2) were associated with decreased HIV acquisition risk. We previously reported that infants immunized with a MF59 adjuvanted rgp120 vaccine developed higher magnitude anti-V1V2 IgG responses than adult RV144 vaccinees. To determine if the robust antibody response in infants is due to differences in vaccine regimens or to inherent differences between the adult and infant immune systems, we compared Env-specific IgG responses in adults and infants immunized with the same MF59 and Alum adjuvanted HIV envelope vaccines...
October 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29017943/efficacy-and-safety-of-a-non-mineral-oil-adjuvanted-injectable-vaccine-for-the-protection-of-atlantic-salmon-salmo-salar-l-against-flavobacterium-psychrophilum
#11
R Hoare, S-J Jung, T P H Ngo, K Bartie, J Bailey, K D Thompson, A Adams
Flavobacterium psychrophilum is the causative agent of Rainbow Trout Fry Syndrome which has had a major impact on global salmonid aquaculture. Recent outbreaks in Atlantic salmon in Scotland and Chile have added to the need for a vaccine to protect both salmon and trout. At present no licensed vaccines are available in Europe, leaving antibiotics as the only course of action to contain disease outbreaks. Outbreaks generally occur in fry at temperatures between 10 and 15 °C. Recently outbreaks in larger fish have given added impetus to the development of a vaccine which can provide long term protection from this highly heterogeneous pathogen...
October 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28993770/adjuvant-mediated-epitope-specificity-and-enhanced-neutralizing-activity-of-antibodies-targeting-dengue-virus-envelope-protein
#12
Denicar Lina Nascimento Fabris Maeda, Milene Tavares Batista, Lennon Ramos Pereira, Mariana de Jesus Cintra, Jaime Henrique Amorim, Camila Mathias-Santos, Sara Araújo Pereira, Silvia Beatriz Boscardin, Sandriana Dos Ramos Silva, Eliana L Faquim-Mauro, Vanessa Barbosa Silveira, Danielle Bruna Leal Oliveira, Stephen Albert Johnston, Luís Carlos de Souza Ferreira, Juliana Falcão Rodrigues
The heat-labile toxins (LT) produced by enterotoxigenic Escherichia coli display adjuvant effects to coadministered antigens, leading to enhanced production of serum antibodies. Despite extensive knowledge of the adjuvant properties of LT derivatives, including in vitro-generated non-toxic mutant forms, little is known about the capacity of these adjuvants to modulate the epitope specificity of antibodies directed against antigens. This study characterizes the role of LT and its non-toxic B subunit (LTB) in the modulation of antibody responses to a coadministered antigen, the dengue virus (DENV) envelope glycoprotein domain III (EDIII), which binds to surface receptors and mediates virus entry into host cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28968993/human-papillomavirus-16l1-58l2-chimeric-virus-like-particles-elicit-durable-neutralizing-antibody-responses-against-a-broad-spectrum-of-human-papillomavirus-types
#13
Xue Chen, Hongyang Liu, Zhirong Wang, Shuo Wang, Ting Zhang, Meili Hu, Liang Qiao, Xuemei Xu
The neutralizing antibodies elicited by human papillomavirus (HPV) major capsid protein L1 virus-like particle (VLP)-based vaccines are largely type-specific. An HPV vaccine inducing cross-neutralizing antibodies broadly will be cost-effective and of great value. To this end, we constructed HPV16L1-58L2 chimeric VLP (cVLP) by displaying HPV58 L2 aa.16-37 on the DE surface region of HPV16 L1. We found that vaccination with the HPV16L1-58L2 cVLP formulated with alum plus monophosphoryl lipid A (Alum-MPL) adjuvant elicited robust neutralizing antibodies in both mice and rabbits against all tested HPV types including HPV16/31/33/35/52/58 (genus α9), HPV18/39/45/59/68 (genus α7), HPV6/11 (genus α10), HPV2/27/57 (genus α4), and HPV5 (genus β1)...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28953265/microcrystalline-tyrosine-mct-%C3%A2-a-depot-adjuvant-in-licensed-allergy-immunotherapy-offers-new-opportunities-in-malaria
#14
Gustavo Cabral-Miranda, Matthew D Heath, Ariane C Gomes, Mona O Mohsen, Eduardo Montoya-Diaz, Ahmed M Salman, Erwan Atcheson, Murray A Skinner, Matthias F Kramer, Arturo Reyes-Sandoval, Martin F Bachmann
Microcrystalline Tyrosine (MCT(®)) is a widely used proprietary depot excipient in specific immunotherapy for allergy. In the current study we assessed the potential of MCT to serve as an adjuvant in the development of a vaccine against malaria. To this end, we formulated the circumsporozoite protein (CSP) of P. vivax in MCT and compared the induced immune responses to CSP formulated in PBS or Alum. Both MCT and Alum strongly increased immunogenicity of CSP compared to PBS in both C57BL/6 and BALB/c mice. Challenge studies in mice using a chimeric P...
September 27, 2017: Vaccines
https://www.readbyqxmd.com/read/28951732/deficiency-in-calcium-binding-protein-s100a4-impairs-the-adjuvant-action-of-cholera-toxin
#15
Jia-Bin Sun, Jan Holmgren, Maximilian Larena, Manuela Terrinoni, Yu Fang, Anne R Bresnick, Zou Xiang
The calcium-binding protein S100A4 has been described to promote pathological inflammation in experimental autoimmune and inflammatory disorders and in allergy and to contribute to antigen presentation and antibody response after parenteral immunization with an alum-adjuvanted antigen. In this study, we extend these findings by demonstrating that mice lacking S100A4 have a defective humoral and cellular immune response to mucosal (sublingual) immunization with a model protein antigen [ovalbumin (OVA)] given together with the strong mucosal adjuvant cholera toxin (CT), and that this impairment is due to defective adjuvant-stimulated antigen presentation by antigen-presenting cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28950276/a-mouse-model-of-anaphylaxis-and-atopic-dermatitis-to-salt-soluble-wheat-protein-extract
#16
Yining Jin, Sarah Ebaugh, Anna Martens, Haoran Gao, Eric Olson, Perry K W Ng, Venu Gangur
BACKGROUND: Wheat allergy and other immune-mediated disorders triggered by wheat proteins are growing at an alarming rate for reasons not well understood. A mouse model to study hypersensitivity responses to salt-soluble wheat protein (SSWP) extract is currently unavailable. Here we tested the hypothesis that SSWP extract from wheat will induce sensitization as well as allergic disease in mice. METHODS: Female BALB/cJ mice were weaned onto a plant protein-free diet...
2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28947234/recombinant-hemagglutinin-proteins-formulated-in-a-novel-pelc-cpg-adjuvant-for-h7n9-subunit-vaccine-development
#17
Ting-Hsuan Chen, Ying-Yu Liu, Jia-Tsrong Jan, Ming-Hsi Huang, Maureen Spearman, Michael Butler, Suh-Chin Wu
Humans infected with H7N9 avian influenza viruses can result in severe pneumonia and acute respiratory syndrome with an approximately 40% mortality rate, and there is an urgent need to develop an effective vaccine to reduce its pandemic potential. In this study, we used a novel PELC/CpG adjuvant for recombinant H7HA (rH7HA) subunit vaccine development. After immunizing BALB/c mice intramuscularly, rH7HA proteins formulated in this adjuvant instead of an alum adjuvant elicited higher IgG, hemagglutination-inhibition, and virus neutralizing antibodies in sera; induced higher numbers of H7HA-specific IFN-γ-secreting T cells and antibody secreting cells in spleen; and provided improved protection against live virus challenges...
September 22, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28933663/type-iii-hypersensitivity-reactions-to-a-b-cell-epitope-antigen-are-abrogated-using-a-depot-forming-vaccine-platform
#18
Lisa D MacDonald, Alecia MacKay, Valarmathy Kaliaperumal, Genevieve Weir, Andrea Penwell, Rajkannan Rajagopalan, Joanne M Langley, Scott Halperin, Marc Mansour, Marianne M Stanford
Peptide antigens are combined with an adjuvant in order to increase immunogenicity in vivo. The immunogenicity and safety of a RSV vaccine formulated in a novel oil-based platform, DepoVax™ (DPX), was compared to an alum formulation. A peptide B cell epitope derived from RSV small hydrophobic ectodomain (SHe) served as the antigen. Both vaccines induced SHe-specific antibodies after immunization of mice. A single dose of the DPX-based formulation resulted in anti-SHe titres for up to 20 weeks. Boosting with Alum-SHe, but not with DPX-SHe, led to unexpected clinical signs such as decreased activity, cyanosis and drop in body temperature in mice but not in rabbits...
September 21, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28927819/effect-of-endotoxin-and-alum-adjuvant-vaccine-on-peanut-allergy
#19
Brandi T Johnson-Weaver, Susan McRitchie, Kelly A Mercier, Wimal Pathmasiri, Susan J Sumner, Cliburn Chan, Dori Germolec, Michael Kulis, A Wesley Burks, Herman F Staats
Environmental endotoxin and alum-adjuvanted vaccines did not influence peanut-allergy development in mice. Exposure to alum and CpG-adjuvanted vaccines indirectly reduced allergic disease severity. Fecal metabolites differentiated mice based on disease severity.
September 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28911033/formulation-of-chitosan-with-the-polyepitope-hiv-1-protein-candidate-vaccine-efficiently-boosts-cellular-immune-responses-in-mice
#20
Ehsan Ollah Jazaeri, Atiyeh Mahdavi, Asghar Abdoli
Human immunodeficiency virus-1 (HIV-1) continues to be a major global public health issue and priority. Despite the variety of antiretroviral therapies, it seems that an effective vaccine against HIV-1 is still very necessary. An ideal HIV-1 vaccine should be able to elicit both humoral and cellular immunities. In this respect, polyepitope vaccines, incorporated from several conserved regions of HIV-1 proteins, have received much attention recently. Herein, the immunogenicity of the HIV-1 polyepitope protein-based candidate vaccines was evaluated in BALB/c mice...
November 30, 2017: Pathogens and Disease
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