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https://www.readbyqxmd.com/read/28346516/protective-immune-responses-against-schistosoma-mansoni-infection-by-immunization-with-functionally-active-gut-derived-cysteine-peptidases-alone-and-in-combination-with-glyceraldehyde-3-phosphate-dehydrogenase
#1
Hatem Tallima, Jan Dvořák, Sahira Kareem, Marwa Abou El Dahab, Nada Abdel Aziz, John Pius Dalton, Rashika El Ridi
BACKGROUND: Schistosomiasis, a severe disease caused by parasites of the genus Schistosoma, is prevalent in 74 countries, affecting more than 250 million people, particularly children. We have previously shown that the Schistosoma mansoni gut-derived cysteine peptidase, cathepsin B1 (SmCB1), administered without adjuvant, elicits protection (>60%) against challenge infection of S. mansoni or S. haematobium in outbred, CD-1 mice. Here we compare the immunogenicity and protective potential of another gut-derived cysteine peptidase, S...
March 27, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28346102/phage-display-derived-ligand-for-mucosal-transcytotic-receptor-gp-2-promotes-antigen-delivery-to-m-cells-and-induces-antigen-specific-immune-response
#2
Inam Ullah Khan, Jiansheng Huang, Rui Liu, Jingbo Wang, Jun Xie, Naishuo Zhu
Successful oral immunization depends on efficient delivery of antigens (Ags) to the mucosal immune induction site. Glycoprotein-2 (GP-2) is an integral membrane protein that is expressed specifically on M cells within follicle-associated epithelium (FAE) and serves as transcytotic receptor for luminal Ags. In this study, we selected peptide ligands against recombinant human GP-2 by screening a phage display library and evaluated their interaction with GP-2 in vitro and ex vivo. Selected peptides were conjugated to the C-terminal of enhanced green fluorescence protein (EGFP) and evaluated for their ability to induce an immune response in mice...
February 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28344805/utilization-of-cholera-toxin-b-as-a-mucosal-adjuvant-elicits-antibody-mediated-protection-against-s-pneumoniae-infection-in-mice
#3
Kari Wiedinger, Daniel Pinho, Constantine Bitsaktsis
BACKGOUND: The introduction of the pneumococcal conjugate and polysaccharide vaccines have been valuable tools for combating invasive pneumococcal infection in children and healthy adults. Despite the available vaccination strategies, pneumococcal pneumonia and associated diseases continue to cause substantial morbidity and mortality, particularly in individuals with chronic disease and ageing populations. Next-generation pneumococcal vaccines will need to be highly immunogenic across patient populations providing both mucosal and systemic protective immunity...
February 2017: Therapeutic Advances in Vaccines
https://www.readbyqxmd.com/read/28344402/preparation-of-mucosal-nanoparticles-and-polymer-based-inactivated-vaccine-for-newcastle-disease-and-h9n2-ai-viruses
#4
Heba M El Naggar, Mohamed Sayed Madkour, Hussein Ali Hussein
AIM: To develop a mucosal inactivated vaccines for Newcastle disease (ND) and H9N2 viruses to protect against these viruses at sites of infections through mucosal immunity. MATERIALS AND METHODS: In this study, we prepared two new formulations for mucosal bivalent inactivated vaccine formulations for Newcastle and Avian Influenza (H9N2) based on the use of nanoparticles and polymer adjuvants. The prepared vaccines were delivered via intranasal and spray routes of administration in specific pathogen-free chickens...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28343781/sublingual-targeting-of-sting-with-3-3-cgamp-promotes-systemic-and-mucosal-immunity-against-anthrax-toxins
#5
Tara L Martin, Junbae Jee, Eunsoo Kim, Haley E Steiner, Estelle Cormet-Boyaka, Prosper N Boyaka
Anthrax is caused by Bacillus anthracis, a zoonotic bacterial pathogen affecting humans and livestock worldwide. The current human anthrax vaccine, anthrax vaccine adsorbed (AVA), is an injected vaccine with a cumbersome administration schedule and fails to promote mucosal immunity. Bacterial enterotoxins, which stimulate production of the cyclic nucleotide cAMP are effective experimental mucosal vaccine adjuvants, but their inherent toxicity has precluded their use in humans. We investigated whether cyclic dinucleotides that target Stimulator of Interferon Gamma Genes (STING) in mammalian cells could represent an alternative to bacterial enterotoxins as adjuvant for sublingual immunization and promotion of mucosal immunity and secretory IgA responses in addition to systemic immunity...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343701/toll-like-receptor-8-agonist-nanoparticles-mimic-immunomodulating-effects-of-the-live-bcg-vaccine-and-enhance-neonatal-innate-and-adaptive-immune-responses
#6
David J Dowling, Evan A Scott, Annette Scheid, Ilana Bergelson, Sweta Joshi, Carlo Pietrasanta, Spencer Brightman, Guzman Sanchez-Schmitz, Simon D Van Haren, Jana Ninković, Dina Kats, Cristiana Guiducci, Alexandre de Titta, Daniel K Bonner, Sachiko Hirosue, Melody A Swartz, Jeffrey A Hubbell, Ofer Levy
BACKGROUND: Newborns display distinct immune responses, leaving them vulnerable to infections and impairing immunization. Targeting newborn dendritic cells (DCs), which integrate vaccine signals into adaptive immune responses, might enable development of age-specific vaccine formulations to overcome suboptimal immunization. OBJECTIVE: Small-molecule imidazoquinoline Toll-like receptor (TLR) 8 agonists robustly activate newborn DCs but can result in reactogenicity when delivered in soluble form...
March 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28342669/extended-protection-capabilities-of-an-immature-dendritic-cell-targeting-malaria-sporozoite-vaccine
#7
Kun Luo, Fidel Zavala, James Gordy, Hong Zhang, Richard B Markham
Mouse studies evaluating candidate malaria vaccines have typically examined protective efficacy over the relatively short time frames of several weeks after the final of multiple immunizations. The current study examines the protective ability in a mouse model system of a novel protein vaccine construct in which the adjuvant polyinosinic polycytidilic acid (poly(I:C)) is used in combination with a vaccine in which the immature dendritic cell targeting chemokine, macrophage inflammatory protein 3 alpha (MIP3α), is fused to the circumsporozoite protein (CSP) of Plasmodium falciparum (P...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342423/a-bioinformatics-approach-to-designing-a-zika-virus-vaccine
#8
Sumanta Dey, Ashesh Nandy, Subhash C Basak, Papiya Nandy, Sukhen Das
The Zika virus infections have reached epidemic proportions in the Latin American countries causing severe birth defects and neurological disorders. While several organizations have begun research into design of prophylactic vaccines and therapeutic drugs, computer assisted methods with adequate data resources can be expected to assist in these measures to reduce lead times through bioinformatics approaches. Using 60 sequences of the Zika virus envelope protein available in the GenBank database, our analysis with numerical characterization techniques and several web based bioinformatics servers identified four peptide stretches on the Zika virus envelope protein that are well conserved and surface exposed and are predicted to have reasonable epitope binding efficiency...
March 10, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28341111/generation-characterization-and-immunogenicity-of-a-novel-chimeric-recombinant-protein-based-on-plasmodium-vivax-ama-1-and-msp119
#9
Mariana Vilela Rocha, Kátia Sanches Françoso, Luciana Chagas Lima, Tarsila Mendes Camargo, Ricardo L D Machado, Fabio T M Costa, Laurent Rénia, Francois Nosten, Bruce Russell, Mauricio M Rodrigues, Irene S Soares
Plasmodium vivax is the most widely distributed malaria species and the most prevalent species of malaria in America and Asia. Vaccine development against P. vivax is considered a priority in the global program for the eradication of malaria. Earlier studies have characterized the Apical Membrane Antigen 1 (AMA-1) ectodomain and the C-terminal region (19kDa) of the Merozoite Surface Protein 1 (MSP-1) of P. vivax as immunodominant antigens. Based on this characterization, we designed a chimeric recombinant protein containing both merozoite immunodominant domains (PvAMA166-MSP119)...
March 21, 2017: Vaccine
https://www.readbyqxmd.com/read/28340570/the-therapeutic-hiv-env-c5-gp41-vaccine-candidate-vacc-c5-induces-specific-t-cell-regulation-in-a-phase-i-ii-clinical-study
#10
Kristin Brekke, Maja Sommerfelt, Mats Ökvist, Anne Margarita Dyrhol-Riise, Dag Kvale
BACKGROUND: Levels of non-neutralising antibodies (AB) to the C5 domain of HIV Env gp120 are inversely related to progression of HIV infection. In this phase I/II clinical study we investigated safety of Vacc-C5, a peptide-based therapeutic vaccine candidate corresponding to C5/gp41(732-744) as well as the effects on pre-existing AB levels to C5/gp41(732-744), immune activation and T cell responses including exploratory assessments of Vacc-C5-induced T cell regulation. Our hypothesis was that exposure of the C5 peptide motif may have detrimental effects due to several of its HLA-like features and that enhancement of non-neutralising anti-C5 AB by vaccination could reduce C5 exposure and thereby chronic immune activation...
March 24, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28340105/morin-stain-detects-aluminum-containing-macrophages-in-macrophagic-myofasciitis-and-vaccination-granuloma-with-high-sensitivity-and-specificity
#11
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...
March 15, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28338507/ny-eso-1-protein-cancer-vaccine-with-poly-iclc-and-ok-432-rapid-and-strong-induction-of-ny-eso-1-specific-immune-responses-by-poly-iclc
#12
Tomohira Takeoka, Hirotsugu Nagase, Koji Kurose, Yoshihiro Ohue, Makoto Yamasaki, Shuji Takiguchi, Eiichi Sato, Midori Isobe, Takayuki Kanazawa, Mitsunobu Matsumoto, Kota Iwahori, Atsunari Kawashima, Akiko Morimoto-Okazawa, Hiroyoshi Nishikawa, Mikio Oka, Linda Pan, Ralph Venhaus, Eiichi Nakayama, Masaki Mori, Yuichiro Doki, Hisashi Wada
We conducted a clinical trial of a cancer vaccine using NY-ESO-1 protein with polyinosinic-polycytidylic acid-poly-L-lysine carboxymethylcellulose (poly-ICLC) and/or OK-432 against solid tumors. A total of 15 patients were sequentially enrolled in 4 cohorts. Patients in cohort 1 received NY-ESO-1 protein; cohort 2a received NY-ESO-1 protein+OK-432; cohort 2b received NY-ESO-1 protein+poly-ICLC; cohort 3 received NY-ESO-1 protein+OK-432+poly-ICLC with Montanide ISA-51. The endpoints of this trial were safety, NY-ESO-1 immune responses, and clinical response...
March 23, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28337203/a-universal-vaccine-against-leptospirosis-are-we-going-in-the-right-direction
#13
André Alex Grassmann, Jéssica Dias Souza, Alan John Alexander McBride
Leptospirosis is the most widespread zoonosis in the world and a neglected tropical disease estimated to cause severe infection in more than one million people worldwide every year that can be combated by effective immunization. However, no significant progress has been made on the leptospirosis vaccine since the advent of bacterins over 100 years. Although protective against lethal infection, particularly in animals, bacterin-induced immunity is considered short term, serovar restricted, and the vaccine can cause serious side effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28337198/role-of-metallic-nanoparticles-in-vaccinology-implications-for-infectious-disease-vaccine-development
#14
REVIEW
Lázaro Moreira Marques Neto, André Kipnis, Ana Paula Junqueira-Kipnis
Subunit vaccines are safer but less immunogenic than live-attenuated vaccines or whole cell inactivated vaccines. Adjuvants are used to enhance and modulate antigen (Ag) immunogenicity, aiming to induce a protective and long-lasting immune response. Several molecules and formulations have been studied for their adjuvanticity, but only seven have been approved to formulate human vaccines. Metallic nanoparticles (MeNPs), particularly those containing gold and iron oxides, are widely used in medicine for diagnosis and therapy and have been used as carriers for drugs and vaccines...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28337196/salmonella-typhi-porins-ompc-and-ompf-are-potent-adjuvants-for-t-dependent-and-t-independent-antigens
#15
Marisol Pérez-Toledo, Nuriban Valero-Pacheco, Rodolfo Pastelin-Palacios, Cristina Gil-Cruz, Christian Perez-Shibayama, Mario A Moreno-Eutimio, Ingeborg Becker, Sonia Mayra Pérez-Tapia, Lourdes Arriaga-Pizano, Adam F Cunningham, Armando Isibasi, Laura C Bonifaz, Constantino López-Macías
Several microbial components, such as bacterial DNA and flagellin, have been used as experimental vaccine adjuvants because of their inherent capacity to efficiently activate innate immune responses. Likewise, our previous work has shown that the major Salmonella Typhi (S. Typhi) outer membrane proteins OmpC and OmpF (porins) are highly immunogenic protective antigens that efficiently stimulate innate and adaptive immune responses in the absence of exogenous adjuvants. Moreover, S. Typhi porins induce the expression of costimulatory molecules on antigen-presenting cells through toll-like receptor canonical signaling pathways...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28336893/chitosan-functionalized-graphene-oxide-as-a-potential-immunoadjuvant
#16
Ting Yan, Huijie Zhang, Dandi Huang, Shini Feng, Morihisa Fujita, Xiao-Dong Gao
The application of graphene oxide (GO) as a potential vaccine adjuvant has recently attracted considerable attention. However, appropriate surface functionalization of GO is crucial to improve its biocompatibility and enhance its adjuvant activity. In this study, we developed a simple method to prepare chitosan (CS)-functionalized GO (GO-CS) and further investigated its potential as a nanoadjuvant. Compared with GO, GO-CS possessed considerably smaller size, positive surface charge, and better thermal stability...
March 8, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28335329/nanoparticle-based-delivery-of-anaplasma-marginale-membrane-proteins-virb9-1-and-virb10-produced-in-the-pichia-pastoris-expression-system
#17
Bing Zhang, Antonio S Cavallaro, Karishma T Mody, Jun Zhang, James R Deringer, Wendy C Brown, Timothy J Mahony, Chengzhong Yu, Neena Mitter
Bovine anaplasmosis or cattle-tick fever is a tick-borne haemolytic disease caused by the rickettsial haemoparasite Anaplasma marginale in tropical and subtropical areas of the world. While difficult to express, the proteins VirB9-1 and VirB10 are immunogenic components of the outer membrane type IV secretion system that have been identified as candidate antigens for vaccines targeting of A. marginale. Soluble VirB9-1 and VirB10 were successfully expressed using Pichia pastoris. When formulated with the self-adjuvanting silica vesicles, SV-100 (diameter: 50 nm, and pore entrance size: 6 nm), 200 µg of VirB9-1 and VirB10 were adsorbed per milligram of nanoparticle...
November 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335090/in-ovo-vaccination-using-eimeria-profilin-and-clostridium-perfringens-netb-proteins-in-montanide-ims-adjuvant-increases-protective-immunity-against-experimentally-induced-necrotic-enteritis
#18
Hyun Soon Lillehoj, Seung Ik Jang, Alfredo Panebra, Erik Peter Lillehoj, Laurent Dupuis, Juliette B Arous, Seung Kyoo Lee, Sung Taek Oh
Objective: The effects of vaccinating 18-day-old chicken embryos with the combination of recombinant Eimeria profilin plus Clostridium perfringens NetB proteins mixed in the Montanide IMS adjuvant on the chicken immune response to necrotic enteritis (NE) were investigated using an E. maxima/C. perfringens co-infection NE disease model that we previously developed. Methods: Eighteen-day-old broiler embryos were injected with 100 μl of PBS, profilin, profilin plus NetB, profilin plus NetB/Montanide adjuvant (IMS 106), and profilin plus Net-B/Montanide adjuvant (IMS 101)...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28334393/adjuvant-human-papillomavirus-vaccination-for-secondary-prevention-a-systematic-review
#19
Gregory R Dion, Stephanie Teng, Leslie R Boyd, Antonia Northam, Charlotte Mason-Apps, Dorice Vieira, Milan R Amin, Ryan C Branski
Importance: Human papillomavirus (HPV) vaccination is recommended for children and younger adults but not older adults or those with prior HPV exposure, leaving a large portion of the population at risk for HPV-mediated disease. Emerging data suggest a possible role for vaccination as an adjuvant treatment for individuals with HPV-related clinical disease. Objective: To systematically review the literature regarding HPV vaccination for secondary disease prevention after treatment of active clinical disease across disease sites to serve as a platform for the management of HPV-related disease of the head and neck...
March 23, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28332219/targeting-immunotherapy-to-the-tumor-microenvironment
#20
Michael Dougan, Stephanie K Dougan
Targeting drugs to the tumor microenvironment has long been appreciated as a means of increasing local concentrations and decreasing systemic toxicities. How drug targeting might apply to immune-based therapies is less clear. In this review, we explain the immunology of cancer, with a focus on the principles of in situ vaccination. Certain types of therapies are more amenable to local versus systemic delivery; these include cytokines, adjuvants, radiation, and agents targeting tumor-resident cell populations...
March 23, 2017: Journal of Cellular Biochemistry
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