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Vaccine adjuvant

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https://www.readbyqxmd.com/read/27914742/influenza-virus-specific-antibody-dependent-cellular-cytoxicity-induced-by-vaccination-or-natural-infection
#1
Rory D de Vries, Nella J Nieuwkoop, Mark Pronk, Erwin de Bruin, Geert Leroux-Roels, Elisabeth G W Huijskens, Rob S van Binnendijk, Florian Krammer, Marion P G Koopmans, Guus F Rimmelzwaan
Influenza viruses are responsible for substantial morbidity and mortality during seasonal epidemics. Vaccination is the most effective method to prevent infection, however due to antigenic drift of the viral surface protein hemagglutinin (HA), annual influenza virus vaccination is required. In addition to seasonal viruses, certain (avian) influenza A viruses of other subtypes, like H5N1 or H7N9, cause sporadic zoonotic infections. Therefore, the availability of game-changing novel vaccines that induce "universal" immune responses to a wide variety of influenza A virus subtypes is highly desirable...
November 30, 2016: Vaccine
https://www.readbyqxmd.com/read/27913028/active-immunization-with-brucella-abortus-s19-phage-lysate-elicits-serum-igg-that-protects-guinea-pigs-against-virulent-b-%C3%A2-abortus-and-protects-mice-by-passive-immunization
#2
Lata Jain, Mayank Rawat, Saravanan Ramakrishnan, Bablu Kumar
Brucellosis is an economically important zoonosis of worldwide significance. Earlier (Jain et al., 2015) we reported methodology for generation of phage lysate preparations against Brucella abortus S19 using brucellaphage 'ϕLd'. In this study, using a fixed dose (Two mouse PD100) of lysates, the prophylactic efficacies of both plain and alum gel adjuvanted lysates were evaluated in guinea pig by direct virulent challenge and passive mouse protection test (PMPT). Strong humoral and cell mediated immune responses in guinea pigs and protection comparable to S19 vaccine was observed with low dose (1...
November 29, 2016: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/27912987/gp85-protein-vaccine-adjuvanted-with-silica-nanoparticles-against-alv-j-in-chickens
#3
Jia Cheng, Shiyong Wen, Shenghua Wang, Pan Hao, Ziqiang Cheng, Yongxia Liu, Peng Zhao, Jianzhu Liu
This study focused on the effect of silica nanoparticles as adjuvant for vaccine applications comprised of gp85, a dominating structural protein of J Subgroup Avian Leukosis Virus (ALV-J), and which was evaluated by comparing with the responsiveness induced by that emulsified in Freund adjuvant. Thirty-six chickens were inoculated twice with gp85 adjuvanted with the silica nanoparticles or Freund's adjuvant at the 2nd and 3rd week old. Two weeks later, the inoculated chickens were challenged with a 10(2.2) 50% tissue culture infective dose (TCID50) of ALV-J...
November 29, 2016: Vaccine
https://www.readbyqxmd.com/read/27911873/interleukin-8-holds-promise-to-serve-as-a-molecular-adjuvant-in-dna-vaccination-model-against-streptococcus-iniae-infection-in-fish
#4
Erlong Wang, Bo Long, Kaiyu Wang, Jun Wang, Yang He, Xingli Wang, Qian Yang, Tao Liu, Defang Chen, Yi Geng, Xiaoli Huang, Ping Ouyang, Weimin Lai
DNA vaccines had been widely used in animal models against various viral infections, while it was not so convincing for many infectious diseases especially bacterial disease in aquaculture. Interleukin-8(IL-8) as one of the CXC chemokines, its immunological role and adjuvant potential which had been proved in mammals were rarely reported in fish species. In this study, recombination plasmid pcDNA3.1/IL-8(pcIL-8) was conducted and the capacity of IL-8 as molecular adjuvant was explored from several aspects by co-injecting with a DNA vaccine encoding α-enolase(pcENO) against Streptococcus iniae infection in channel catfish...
November 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/27910914/in-vivo-stepwise-immunomodulation-using-chitosan-nanoparticles-as-a-platform-nanotechnology-for-cancer-immunotherapy
#5
Hee Dong Han, Yeongseon Byeon, Jong-Hwa Jang, Hat Nim Jeon, Ga Hee Kim, Min Gi Kim, Chan-Gi Pack, Tae Heung Kang, In Duk Jung, Yong Taik Lim, Young Joo Lee, Jeong-Won Lee, Byung Cheol Shin, Hyung Jun Ahn, Anil K Sood, Yeong-Min Park
Dentritic cell (DC)-based cancer immunotherapy faces challenges in both efficacy and practicality. However, DC-based vaccination requires multiple injections and elaborates ex vivo manipulation, which substantially limits their use. Therefore, we sought to develop a chitosan nanoparticle (CH-NP)-based platform for the next generation of vaccines to bypass the ex vivo manipulation and induce immune responses via active delivery of polyinosinic-polycytidylic acid sodium salt (poly I:C) to target Toll-like receptor 3 (TLR3) in endosomes...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909791/immunological-evaluation-of-a-dna-cocktail-vaccine-with-co-delivery-of-calcium-phosphate-nanoparticles-capns-against-the-toxoplasma-gondii-rh-strain-in-balb-c-mice
#6
Mohammad Taghi Rahimi, Shahabeddin Sarvi, Mahdi Sharif, Saeid Abediankenari, Ehsan Ahmadpour, Reza Valadan, Mahdi Fasihi- Ramandie, Seyed-Abdollah Hosseini, Ahmad Daryani
Many recent studies have been conducted to evaluate protective immunity mediated by DNA vaccines against toxoplasmosis. Cocktail DNA vaccines showed better immune responses compared to single vaccines. The objective of the current study was to evaluate the protective efficacy of rhomboid 4 (ROM4) and cocktail DNA vaccines (ROM4 + GRA14) of the Toxoplasma gondii RH strain with or without coated calcium phosphate nanoparticles (CaPNs) as the adjuvant to improve the immunogenicity against the T. gondii RH strain in BALB/c mice...
December 2, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27908965/inf-%C3%AE-encoding-plasmid-administration-triggers-bone-loss-and-disrupts-bone-marrow-microenvironment
#7
Dimitrios Agas, Guilherme Gusmâo Silva, Fulvio Laus, Andrea Marchigiani, Melania Capitani, Cecilia Vullo, Giuseppe Catone, Giovanna Lavava, Antonio Concetti, Luigi Marchetti, Maria Giovanna Sabbieti
IFN-γ is a pleotropic cytokine produced in the bone microenvironment. Although IFN-γ is known to play a critical role on bone remodeling, its function is not fully elucidated. Consistently, outcomes on the effects of IFN-γ recombinant protein on bone loss are contradictory among reports. In our work we explored, for the first time, the role of IFN-γ encoding plasmid (pIFN-γ) in a mouse model of osteopenia induced by ovariectomy and in the sham-operated counterpart to estimate its effects in skeletal homeostasis...
December 1, 2016: Journal of Endocrinology
https://www.readbyqxmd.com/read/27908640/flagellin-enhances-the-immunoprotection-of-formalin-inactivated-edwardsiella-tarda-vaccine-in-turbot
#8
Xiaohong Liu, Hua Zhang, Chenglong Jiao, Qin Liu, Yuanxing Zhang, Jingfan Xiao
Edwardsiella tarda is an important fish pathogen that causes extensive losses in farmed fish around the world. Various types of vaccines have been developed against E. tarda infection, such as inactivated vaccine, live attenuated vaccine and subunit vaccine. However, inactivated vaccine exhibits poor immune protection against edwardsiellosis in some reports. In this study, we aimed to evaluate the protective effect of formalin-killed cells (FKC) against E. tarda with flagellin, FlgD, as an adjuvant in turbot...
November 28, 2016: Vaccine
https://www.readbyqxmd.com/read/27908630/non-linear-dose-response-of-aluminium-hydroxide-adjuvant-particles-selective-low-dose-neurotoxicity
#9
Guillemette Crépeaux, Housam Eidi, Marie-Odile David, Yasmine Baba-Amer, Eleni Tzavara, Bruno Giros, François-Jérôme Authier, Christopher Exley, Christopher A Shaw, Josette Cadusseau, Romain K Gherardi
Aluminium (Al) oxyhydroxide (Alhydrogel(®)), the main adjuvant licensed for human and animal vaccines, consists of primary nanoparticles that spontaneously agglomerate. Concerns about its safety emerged following recognition of its unexpectedly long-lasting biopersistence within immune cells in some individuals, and reports of chronic fatigue syndrome, cognitive dysfunction, myalgia, dysautonomia and autoimmune/inflammatory features temporally linked to multiple Al-containing vaccine administrations. Mouse experiments have documented its capture and slow transportation by monocyte-lineage cells from the injected muscle to lymphoid organs and eventually the brain...
November 28, 2016: Toxicology
https://www.readbyqxmd.com/read/27903467/arterio-cutaneous-fistula-associated-with-bilateral-femoral-pseudoaneurysms-caused-by-bacillus-calmette-gu%C3%A3-rin-apropos-of-a-case-and-review-of-literature
#10
Álvaro Torres-Blanco, Francisco Gómez-Palonés, Gemma Edo-Fleta
Vascular complications of intravesical instillation of bacillus Calmette-Guérin (BCG) are rare. BCG is an attenuated strain of Mycobacterium bovis (M. Bovis) that was initially developed for vaccination against tuberculosis, but it has also been used as an adjuvant treatment for bladder transitional carcinoma. We report a patient with a history of instillation of BCG two years before, who underwent surgical treatment of 2 pseudoaneurysms. The first, located in the left superficial femoral artery (SFA), was resected and the artery was ligated because he had a history of femoropopliteal occlusion...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903455/complexation-hydrogels-as-potential-carriers-in-oral-vaccine-delivery-systems
#11
Mia Yoshida, Noriyasu Kamei, Keiya Muto, Jun Kunisawa, Kozo Takayama, Nicholas A Peppas, Mariko Takeda-Morishita
Most current vaccine preparations are in injectable forms, which are inconvenient to patients and ineffective in mucosal immunization. Therefore, most research in this field has been directed at developing ideal oral vaccines enabling the induction of both systemic and mucosal immune responses. In the present study, we examined the utility of a pH-responsive polymeric carrier, poly (methacrylic acid-g-ethylene glycol) [P (MAA-g-EG)] hydrogel, as a potential oral vaccine carrier that can protect cargo proteins in the gastrointestinal tract...
November 26, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27903079/preclinical-evaluation-of-a-replication-deficient-recombinant-adenovirus-serotype-5-vaccine-expressing-guanylate-cyclase-c-and-the-padre-t-helper-epitope
#12
Adam Eugene Snook, Trevor R Baybutt, Terry Hyslop, Scott Arthur Waldman
There is an unmet need for improved therapeutics for colorectal cancer, the second leading cause of cancer mortality worldwide. Adjuvant chemotherapy only marginally improves survival in some patients, and has no benefit in others, underscoring the clinical opportunity for novel immunotherapeutic approaches to improve survival in colorectal cancer. In that context, guanylate cyclase C (GUCY2C) is an established biomarker and therapeutic target for metastatic colorectal cancer with immunological characteristics that promote durable antitumor efficacy without autoimmunity...
November 30, 2016: Human Gene Therapy Methods
https://www.readbyqxmd.com/read/27902896/the-efficacy-of-chitosan-adjuvanted-mycoplasma-gallisepticum-bacterin-in-chickens
#13
Arithat Limsatanun, Jiroj Sasipreeyajan, Somsak Pakpinyo
Mycoplasma gallisepticum (MG) is one of the major pathogens that cause respiratory signs in the poultry industry. To control MG infection, vaccination is the useful procedure. In this study, MG vaccine was developed by using the local Thai MG isolate (AHRL 20/52). Chitosan, a polysaccharide adjuvant derived from crustaceans, has been successfully used in various vaccines. The objectives of this study were to prepare MG bacterins by using chitosan, serving as an adjuvant, to determine protection against the field Thai MG isolate and to evaluate tissue reaction at the injection site...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902762/presenting-influenza-a-m2e-antigen-on-recombinant-spores-of-bacillus-subtilis
#14
Tomasz Łęga, Paulina Weiher, Michał Obuchowski, Dawid Nidzworski
Effective vaccination against influenza virus infection is a serious problem mainly due to antigenic variability of the virus. Among many of investigated antigens, the extracellular domain of the M2 protein (M2e) features high homology in all strains of influenza A viruses and antibodies against M2e and is protective in animal models; this makes it a potential candidate for generation of a universal influenza vaccine. However, due to the low immunogenicity of the M2e, formulation of a vaccine based on this antigen requires some modification to induce effective immune responses...
2016: PloS One
https://www.readbyqxmd.com/read/27901388/systemic-and-ocular-immune-responses-in-cattle-following-intranasal-vaccination-with-precipitated-or-partially-solubilized-recombinant-moraxella-bovis-cytotoxin-adjuvanted-with-polyacrylic-acid
#15
John A Angelos, Munashe Chigerwe, Judy M Edman, John F Hess
OBJECTIVE To evaluate changes in systemic and ocular antibody responses of steers following intranasal vaccination with precipitated or partially solubilized recombinant Moraxella bovis cytotoxin (MbxA). ANIMALS 13 Angus steers with ages ranging from 318 to 389 days and weights ranging from 352 to 437 kg. PROCEDURES Steers were assigned to receive 500 μg of a precipitated (MbxA-P; n = 5) or partially solubilized (MbxA-S; 5) recombinant MbxA subunit adjuvanted with polyacrylic acid. A control group (n = 3) received the adjuvant alone...
December 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27899275/immunological-consequences-of-immunization-with-tumor-lysate-vaccine-and-propranolol-as-an-adjuvant-a-study-on-cytokine-profiles-in-breast-tumor-microenvironment
#16
Somayeh Ashrafi, Reza Shapouri, Mehdi Mahdavi
In this study, we sought out to study the anti-cancer effects of propranolol (Pro) in combination with tumor lysate vaccine on lymphocyte proliferation activities as well as on IL-2, IL-4, IL-10, IL-12, IL-17 and IFN-γ cytokine concentration in the tumor microenvironment (TME). A tumor model was established in inbred Balb/C mice using transplantation of tumor to the flank of native mice. Tumor-bearing mice were immunized with lysate tumor cells (vaccine), a combination of Pro/Vaccine (Vac). Control groups consisted of tumor-bearing mice receiving only propranolol or PBS three times with one week interval via subcutaneous (s...
November 26, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27899228/the-recombinant-n-terminal-domain-of-spike-proteins-is-a-potential-vaccine-against-middle-east-respiratory-syndrome-coronavirus-mers-cov-infection
#17
Lan Jiaming, Yao Yanfeng, Deng Yao, Hu Yawei, Bao Linlin, Huang Baoying, Yan Jinghua, George F Gao, Qin Chuan, Tan Wenjie
The persistent public health threat of infection with the Middle East respiratory syndrome coronavirus (MERS-CoV) highlights the need for an effective MERS-CoV vaccine. Previous studies have focused mainly on the receptor-binding domain (RBD) on the spike protein of MERS-CoV. Herein, we investigated the immunogenicity and protective potential of the recombinant N-terminal domain (rNTD) of spike proteins as a vaccine candidate. BALB/c mice vaccinated with 5 or 10μg of rNTD protein demonstrated a significant humoral immune response (serum IgG and neutralizing activity)...
November 26, 2016: Vaccine
https://www.readbyqxmd.com/read/27895483/improved-proliferation-of-antigen-specific-cytolytic-t-lymphocytes-using-a-multimodal-nanovaccine
#18
Bo Li, Michael Siuta, Vanessa Bright, Dmitry Koktysh, Brittany K Matlock, Megan E Dumas, Meiying Zhu, Alex Holt, Donald Stec, Shenglou Deng, Paul B Savage, Sebastian Joyce, Wellington Pham
The present study investigated the immunoenhancing property of our newly designed nanovaccine, that is, its ability to induce antigen-specific immunity. This study also evaluated the synergistic effect of a novel compound PBS-44, an α-galactosylceramide analog, in boosting the immune response induced by our nanovaccine. The nanovaccine was prepared by encapsulating ovalbumin (ova) and an adjuvant within the poly(lactic-co-glycolic acid) nanoparticles. Quantitative analysis of our study data showed that the encapsulated vaccine was physically and biologically stable; the core content of our nanovaccine was found to be released steadily and slowly, and nearly 90% of the core content was slowly released over the course of 25 days...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895176/the-syk-nfat-il-2-pathway-in-dendritic-cells-is-required-for-optimal-sterile-immunity-elicited-by-alum-adjuvants
#19
Hanif Javanmard Khameneh, Adrian W S Ho, Roberto Spreafico, Heidi Derks, Hazel Q Y Quek, Alessandra Mortellaro
Despite a long history and extensive usage of insoluble aluminum salts (alum) as vaccine adjuvants, the molecular mechanisms underpinning Ag-specific immunity upon vaccination remain unclear. Dendritic cells (DCs) are crucial initiators of immune responses, but little is known about the molecular pathways used by DCs to sense alum and, in turn, activate T and B cells. In this article, we show that alum adjuvanticity requires IL-2 specifically released by DCs, even when T cell secretion of IL-2 is intact. We demonstrate that alum, as well as other sterile particulates, such as uric acid crystals, induces DCs to produce IL-2 following initiation of actin-mediated phagocytosis that leads to Src and Syk kinase activation, Ca(2+) mobilization, and calcineurin-dependent activation of NFAT, the master transcription factor regulating IL-2 expression...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27895131/the-p-falciparum-cell-traversal-protein-for-ookinetes-and-sporozoites-as-a-candidate-for-pre-erythrocytic-and-transmission-blocking-vaccines
#20
Diego A Espinosa, Joel Vega-Rodriguez, Yevel Flores-Garcia, Amy R Noe, Christian Muñoz, Russell Coleman, Torben Bruck, Keith Haney, Alex Stevens, Diane Retallack, Jeff Allen, Thomas S Vedvick, Christopher B Fox, Steven G Reed, Randall F Howard, Ahmed M Salman, Chris J Janse, Shahid M Khan, Fidel Zavala, Gabriel M Gutierrez
Recent studies have shown that immune responses against the Cell-Traversal Protein for Plasmodium Ookinetes and Sporozoites (CelTOS) can inhibit parasite infection. While these studies provide important evidence towards the development of vaccines targeting this protein, it remains unknown whether these responses could engage the P. falciparum CelTOS in vivo. Using a newly developed rodent malaria chimeric parasite expressing the P. falciparum CelTOS (PfCelTOS), we evaluated the protective effect of in vivo immune responses elicited by vaccination and assessed the neutralizing capacity of monoclonal antibodies specific against PfCelTOS...
November 28, 2016: Infection and Immunity
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