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vaccine adjuvants

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https://www.readbyqxmd.com/read/29226722/the-use-of-databases-data-mining-and-immunoinformatics-in-vaccinology-where-are-we
#1
Nagendra R Hegde, S Gauthami, H M Sampath Kumar, Jagadeesh Bayry
Vaccinology has evolved from a sub-discipline focussed on simplistic vaccine development based on antibody-mediated protection to a separate discipline involving epidemiology, host and pathogen biology, immunology, genomics, proteomics, structure biology, protein engineering, chemical biology, and delivery systems. Data mining in combination with bioinformatics has provided a scaffold linking all these disciplines to the design of vaccines and vaccine adjuvants. Areas covered: This review provides background knowledge on immunological aspects which have been exploited with informatics for the in silico analysis of immune responses and the design of vaccine antigens...
December 11, 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/29224339/immobilization-of-aluminum-hydroxide-particles-on-quartz-crystal-microbalance-sensors-to-elucidate-antigen-adjuvant-interaction-mechanisms-in-vaccines
#2
Jean-François Art, Aurélien Vander Straeten, Christine C Dupont-Gillain
Aluminum hydroxide (AH) salts are the most widely used adjuvants in vaccine formulation. They trigger immunogenicity from antigenic subunits that would otherwise suffer from a lack of efficiency. Previous studies focusing on antigen-AH interaction mechanisms, performed with model proteins, suggested that electrostatic interactions and phosphate-hydroxyl ligand exchanges drive protein adsorption on AH. We however recently evidenced that NaCl, used in vaccine formulation, provokes AH particle aggregation. This must be taken into account to interpret data related to protein adsorption on AH...
December 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29223454/preparation-characterization-and-immunological-evaluation-of-alginate-nanoparticles-loaded-with-whole-inactivated-influenza-virus-dry-powder-formulation-for-nasal-immunization-in-rabbits
#3
Solmaz Dehghan, Masoumeh Tavassoti Kheiri, Khalil Abnous, Maryam Eskandari, Mohsen Tafaghodi
It has become important to explore more efficient and feasible influenza vaccines, since epidemics of influenza virus cause hundreds of thousands of deaths all around the world. Improving immunogenicity of parentral influenza vaccines has given rise to mucosal delivery routes. In this study, alginate nanoparticles (NPs) were efficiently synthetized by ionic gelation method and influenza virus and CpG ODN or Quillaja Saponin (QS) adjuvants were actively incorporated into alginate NPs. The prepared particles were evaluated for both humoral and cellular immune responses in rabbits' nostrils...
December 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29223138/plant-expressed-fc-fusion-protein-tetravalent-dengue-vaccine-with-inherent-adjuvant-properties
#4
Mi Young Kim, Alastair Copland, Kaustuv Nayak, Anmol Chandele, Muhammad Shamsher Ahmed, Qibo Zhang, Gil Reynolds Diogo, Matthew John Paul, Sven Hofmann, Moon-Sik Yang, Yong-Suk Jang, Julian K-C Ma, Rajko Reljic
Dengue is a major global disease requiring improved treatment and prevention strategies. The recently licensed Sanofi-Pasteur Denvaxia vaccine does not protect children under the age of nine and additional vaccine strategies are thus needed to halt this expanding global epidemic. Here, we employed a molecular engineering approach and plant-expression to produce a humanised and highly immunogenic Poly-Immunoglobulin G Scaffold (PIGS) fused to the consensus dengue envelope protein III domain (cEDIII). The immunogenicity of this IgG Fc receptor targeted vaccine candidate was demonstrated in transgenic mice expressing human FcγRI/CD64, by induction of neutralising antibodies and evidence of cell-mediated immunity...
December 9, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29221615/is-exposure-to-aluminium-adjuvants-associated-with-social-impairments-in-mice-a-pilot-study
#5
Sneha K S Sheth, Yongling Li, Christopher A Shaw
BACKGROUND: Our group has shown that significant correlations exist between rates of Autism Spectrum Disorder (ASD) and total aluminum adjuvants given to children through vaccines in several Western countries. These correlations satisfied eight out of nine Hill criteria for causality. Experimental studies have demonstrated a range of behavioural abnormalities in young mice after postnatal exposure to aluminium. To build on our previous work, the current study will investigate the effect of aluminium adjuvants on social behaviour in mice...
November 21, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29220721/novel-effect-of-methionine-enkephalin-against-influenza-a-virus-infection-through-inhibiting-tlr7-myd88-traf6-nf-%C3%AE%C2%BAb-p65-signaling-pathway
#6
Jing Tian, Xue Jiao, Xiaonan Wang, Jin Geng, Reizhe Wang, Ning Liu, Xinhua Gao, Noreen Griffin, Fengping Shan
The morbidity and mortality associated with influenza A virus infections, have stimulated the search for novel prophylactic and therapeutic drugs. The purpose of this study was to investigate the prophylactic and therapeutic effect of synthetic methionine enkephalin (MENK) on mice infected by A/PR/8/34 influenza virus (H1N1) in vivo. The results showed that MENK could exert both prophylactic and therapeutic influences on infected mice, significantly improve the survival rate, relieve acute lung injury and decrease cytokine (IFN-α, IFN-β, TNF-α, IL-6, and IL-1β) levels...
December 5, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29220492/hbv-derived-synthetic-long-peptide-can-boost-cd4-and-cd8-t-cell-responses-in-chronic-hbv-patients-ex-vivo
#7
Yingying Dou, Nadine van Montfoort, Aniek van den Bosch, Robert A de Man, Gijs G Zom, Willem-Jan Krebber, Cornelis J M Melief, Sonja I Buschow, Andrea M Woltman
Background: Vaccination with Synthetic Long Peptides (SLP ®) is a promising new treatment strategy for chronic HBV (CHB). SLP can induce broad T cell responses for all HLA types. Here we investigated the ability of a prototype HBV-core (HBc)-sequence-derived SLP to boost HBV-specific T cells in CHB patients ex vivo. Methods: HBc-SLP was used to assess cross-presentation by monocyte-derived DC(moDC) and BDCA1+ blood myeloid DC (mDC) to engineered HBV-specific CD8+ T cells...
December 6, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29217375/preliminary-aggregate-safety-and-immunogenicity-results-from-three-trials-of-a-purified-inactivated-zika-virus-vaccine-candidate-phase-1-randomised-double-blind-placebo-controlled-clinical-trials
#8
Kayvon Modjarrad, Leyi Lin, Sarah L George, Kathryn E Stephenson, Kenneth H Eckels, Rafael A De La Barrera, Richard G Jarman, Erica Sondergaard, Janice Tennant, Jessica L Ansel, Kristin Mills, Michael Koren, Merlin L Robb, Jill Barrett, Jason Thompson, Alison E Kosel, Peter Dawson, Andrew Hale, C Sabrina Tan, Stephen R Walsh, Keith E Meyer, James Brien, Trevor A Crowell, Azra Blazevic, Karla Mosby, Rafael A Larocca, Peter Abbink, Michael Boyd, Christine A Bricault, Michael S Seaman, Anne Basil, Melissa Walsh, Veronica Tonwe, Daniel F Hoft, Stephen J Thomas, Dan H Barouch, Nelson L Michael
BACKGROUND: A safe, effective, and rapidly scalable vaccine against Zika virus infection is needed. We developed a purified formalin-inactivated Zika virus vaccine (ZPIV) candidate that showed protection in mice and non-human primates against viraemia after Zika virus challenge. Here we present the preliminary results in human beings. METHODS: We did three phase 1, placebo-controlled, double-blind trials of ZPIV with aluminium hydroxide adjuvant. In all three studies, healthy adults were randomly assigned by a computer-generated list to receive 5 μg ZPIV or saline placebo, in a ratio of 4:1 at Walter Reed Army Institute of Research, Silver Spring, MD, USA, or of 5:1 at Saint Louis University, Saint Louis, MO, USA, and Beth Israel Deaconess Medical Center, Boston, MA, USA...
December 4, 2017: Lancet
https://www.readbyqxmd.com/read/29217176/a-strong-adjuvant-based-on-glycol-chitosan-coated-lipid-polymer-hybrid-nanoparticles-potentiates-mucosal-immune-responses-against-the-recombinant-chlamydia-trachomatis-fusion-antigen-cth522
#9
Fabrice Rose, Jeanette Erbo Wern, Francesca Gavins, Peter Andersen, Frank Follmann, Camilla Foged
Induction of mucosal immunity with vaccines is attractive for the immunological protection against pathogen entrance directly at the site of infection. An example is infection with Chlamydia trachomatis (Ct), which is the most common sexually transmitted infection in the world, and there is an unmet medical need for an effective vaccine. A vaccine against Ct should elicit protective humoral and cell-mediated immune (CMI) responses in the genital tract mucosa. We previously designed an antibody- and CMI-inducing adjuvant based on poly(dl-lactic-co-glycolic acid) (PLGA) nanoparticles modified with the cationic surfactant dimethyldioctadecylammonium bromide and the immunopotentiator trehalose-6,6'-dibehenate...
December 4, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29216783/moving-towards-improved-vaccines-for-toxoplasma-gondii
#10
Yawen Li, Huaiyu Zhou
Toxoplasma gondii is an intracellular parasitic protozoan that infects almost all warm-blooded animals and humans, resulting in threats to public health and economic losses. Despite continuous research efforts, there are still very few effective strategies against toxoplasmosis. In the past few years, numerous vaccination experiments have been performed to control T. gondii infection. Areas covered: In this review, the authors summarize the development of T. gondii vaccines with proper adjuvants, ranging from live or live-attenuated vaccines to protein vaccines, DNA vaccines, epitope vaccines and novel vaccines...
December 8, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/29216362/an-hsv-2-single-cycle-candidate-vaccine-deleted-in-glycoprotein-d-%C3%AE-gd-2-protects-male-mice-from-lethal-skin-challenge-with-clinical-isolates-of-hsv-1-and-hsv-2
#11
Clare Burn, Natalie Ramsey, Scott J Garforth, Steven Almo, William R Jacobs, Betsy C Herold
HSV infections manifest as recurrent oral or genital mucosal lesions, meningoencephalitis, corneal blindness and perinatal disease. Subunit vaccines have advanced into the clinic without success. None were tested preclinically in male mice. We compared a single-cycle candidate vaccine deleted in HSV-2 glycoprotein D (ΔgD-2) and subunit gD-2 or gD-1 protein vaccines in a male murine skin model. ΔgD-2 provided complete protection against 10-times the lethal dose of HSV-1 or HSV-2 clinical isolates and no latent virus was detected, whereas gD-1 and gD-2 adjuvanted proteins provided little or no protection...
December 5, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29215747/nanoliposomes-as-the-adjuvant-delivery-systems-in-cancer-immunotherapy
#12
REVIEW
Parvin Zamani, Amir Abbas Momtazi-Borojeni, Maryam Ebrahimi Nik, Reza Kazemi Oskuee, Amirhossein Sahebkar
Cancer immunotherapy is one of the commonly used methods in the treatment of cancer. The aim of this approach is to strengthen or restore immune function for effective diagnosis of aberrant cells antigens. For this reason, cancer specific peptides or proteins are used as antigens to induce an immune response capable of removing cancer cells. Liposomal formulations are an important carrier system frequently used for delivery of antigen because the specific properties of this component such as lipid composition, charge, size, encapsulation of antigens or adjuvants can be changed...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29214048/good-vaccination-practice-it-all-starts-with-a-good-vaccine-storage-temperature
#13
Frédéric Vangroenweghe
Background: Recent introduction of strategies to reduce antibiotic use in food animal production implies an increased use of vaccines in order to prevent the economic impact of several important diseases in swine. Good Vaccination Practice (GVP) is an overall approach on the swine farm aiming to obtain maximal efficacy of vaccination through good storage, preparation and finally correct application to the target animals. In order to have a better insight into GVP on swine farms and the vaccine storage conditions, a survey on vaccination practices was performed on a farmers' fair and temperatures in the vaccine storage refrigerators were measured during farm visits over a period of 1 year...
2017: Porcine Health Management
https://www.readbyqxmd.com/read/29212581/cationic-liposome-oligonucleotide-complex-as-an-alternative-adjuvant-for-polyclonal-antibody-production-in-new-zealand-white-rabbits-oryctolaguscuniculus
#14
Erin S Lee, Clinton Sc Walker, Jacob E Moskowitz, Valerie A Johnson, Lon V Kendall
Because of their ideal size and temperament, rabbits are commonly used in polyclonal antibody production. Immunostimulatory adjuvants-such as Freund complete and incomplete adjuvants as well as various proprietary products-trigger a robust immune response, which increases antibody concentrations. However, these adjuvants can cause excessive soft tissue reactions, prompting concerns regarding animal wellbeing. This study assessed the safety and efficacy of cationic liposome- oligonucleotide complexes (CLDC) as an alternative adjuvant to conventional adjuvants...
December 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/29211241/parenteral-adjuvant-potential-of-recombinant-b-subunit-of-escherichia-coli-heat-labile-enterotoxin
#15
Carlos Eduardo Pouey da Cunha, Clóvis Moreira, Andréa da Silva Ramos Rocha, Paula Fonseca Finger, Carolina Georg Magalhães, Marcos Roberto Alves Ferreira, Odir Antônio Dellagostin, Ângela Nunes Moreira, Fabricio Rochedo Conceição
BACKGROUND: The B subunit of Escherichia coli heat-labile enterotoxin (LTB) is a potent mucosal immune adjuvant. However, there is little information about LTB's potential as a parenteral adjuvant. OBJECTIVES: We aimed at evaluating and better understanding rLTB's potential as a parenteral adjuvant using the fused R1 repeat of Mycoplasma hyopneumoniae P97 adhesin as an antigen to characterise the humoral immune response induced by this construct and comparing it to that generated when aluminium hydroxide is used as adjuvant instead...
December 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29211052/maternal-vaccination-immunization-of-sows-during-pregnancy-against-etec-infections
#16
REVIEW
Jose Matías, Melibea Berzosa, Yadira Pastor, Juan M Irache, Carlos Gamazo
The immunology of pregnancy is an evolving consequence of multiple reciprocal interactions between the maternal and the fetal-placental systems. The immune response must warrant the pregnancy outcome (including tolerance to paternal antigens), but at the same time, efficiently respond to pathogenic challenges. Enterotoxigenic Escherichia coli (ETEC) strains are a major cause of illness and death in neonatal and recently weaned pigs. This review aims to give an overview of the current rationale on the maternal vaccination strategies for the protection of the newborn pig against ETEC...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29210987/prophylactic-sublingual-immunization-with-mycobacterium-tuberculosis-subunit-vaccine-incorporating-the-natural-killer-t-cell-agonist-alpha-galactosylceramide-enhances-protective-immunity-to-limit-pulmonary-and-extra-pulmonary-bacterial-burden-in-mice
#17
Arshad Khan, Shailbala Singh, Gloria Galvan, Chinnaswamy Jagannath, K Jagannadha Sastry
Infection by Mycobacterium tuberculosis (Mtb) remains a major global concern and the available Bacillus Calmette-Guerin (BCG) vaccine is poorly efficacious in adults. Therefore, alternative vaccines and delivery strategies focusing on Mtb antigens and appropriate immune stimulating adjuvants are needed to induce protective immunity targeted to the lungs, the primary sites of infections and pathology. We present here evidence in support of mucosal vaccination by the sublingual route in mice using the subunit Mtb antigens Ag85B and ESAT-6 adjuvanted with the glycolipid alpha-galactosylceramide (α-GalCer), a potent natural killer T (NKT) cell agonist...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29210292/the-role-of-lpd-nanoparticles-containing-recombinant-major-surface-glycoprotein-of-leishmania-rgp63-in-protection-against-leishmaniasis-in-murine-model
#18
Hengameh Firouzmand, Mehrnosh Sahranavard, Ali Badiee, Ali Khamesipour, Seyedeh Hoda Alavizadeh, Afshin Samiei, Dina Soroush, Masoumeh Tavassoti Kheiri, Fereidoun Mahboudi, Mahmoud Reza Jaafari
CONTEXT: Leishmaniasis is a major public health problem. Despite numerous attempts, yet there is no effective vaccine against human leishmaniasis, mainly due to a lack of an effective vaccine delivery system as well as adjuvant. OBJECTIVE(S): The aim of this study was to evaluate the ability of recombinant glycoprotein 63 (rgp63) as a model of Leishmania antigen, entrapped in liposome-polycation-DNA (LPD) complexes nanoparticles in inducing cell mediated immune (CMI) response and protecting against L...
December 6, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/29209310/alum-activates-the-bovine-nlrp3-inflammasome
#19
Ciaran Harte, Aoife L Gorman, S McCluskey, Michael Carty, Andrew G Bowie, C J Scott, Kieran G Meade, Ed C Lavelle
There has been a move away from vaccines composed of whole or inactivated antigens toward subunit-based vaccines, which although safe, provide less immunological protection. As a result, the use of adjuvants to enhance and direct adaptive immune responses has become the focus of much targeted bovine vaccine research. However, the mechanisms by which adjuvants work to enhance immunological protection in many cases remains unclear, although this knowledge is critical to the rational design of effective next generation vaccines...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29206298/effects-of-poly-i-c-and-mf59-co-adjuvants-on-immunogenicity-and-efficacy-of-survivin-polypeptide-immunogen-against-melanoma
#20
Xiaoyu Jiang, Shanshan Guan, Yongbo Qiao, Xiao Li, Yan Xu, Lan Yang, Ziyu Kuai, Haihong Zhang, Yuhua Shi, Wei Kong, Yaming Shan, Hao Zhang
Malignant tumors pose a public health problem that jeopardizes human life and quality of living. At present, tumor vaccines in clinical research typically are aimed at stimulating the cellular immune response, while more effective vaccines should take into account the synergy between broad spectrum antibodies and high levels of cellular immunity. In this study, epitope peptides (68-81, 95-104, 80-88) of the tumor antigen survivin were chosen as immunogens and supplemented with poly(I:C) and/or MF59 adjuvant to evaluate the immune effects and anti-melanoma activities...
December 5, 2017: Journal of Cellular Physiology
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