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https://www.readbyqxmd.com/read/28087148/immunogenicity-differences-of-a-15-valent-pneumococcal-polysaccharide-conjugate-vaccine-pcv15-based-on-vaccine-dose-route-of-immunization-and-mouse-strain
#1
REVIEW
Ivette Caro-Aguilar, Lani Indrawati, Robin M Kaufhold, Christine Gaunt, Yuhua Zhang, Denise K Nawrocki, Cecilia Giovarelli, Michael A Winters, William J Smith, Jon Heinrichs, Julie M Skinner
Pneumococcal disease continues to be a medical need even with very effective vaccines on the market. Globally, there are extensive research efforts to improve serotype coverage with novel vaccines; therefore, conducting preclinical studies in different animal models becomes essential. The work presented herein focuses on evaluating a 15-valent pneumococcal conjugate vaccine (PCV15) in mice. Initially we evaluated several doses of PCV15 in Balb/c mice. The optimal vaccine dose was determined to be 0.4μg per pneumococcal polysaccharide (PS) (0...
January 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28087147/immune-responses-to-in-ovo-vaccine-formulations-containing-inactivated-fowl-adenovirus-8b-with-poly-di-sodium-carboxylatoethylphenoxy-phosphazene-pcep-and-avian-beta-defensin-as-adjuvants-in-chickens
#2
Mishal Sarfraz, Muhammed Suleman, Suresh K Tikoo, Colette Wheler, Andrew A Potter, Volker Gerdts, Arshud Dar
Inclusion body hepatitis (IBH) is one of the major viral infections causing substantial economic loss to the global poultry industry. The disease is characterized by a sudden onset of mortality (2-30%) and high morbidity (60-70%). IBH is caused by a number of serotypes of fowl adenovirus with substantially low levels of serotype cross protection. Thus far, there is no effective and safe vaccine commercially available in the North America for the control of IBH in chickens. Poly[di(sodium carboxylatoethylphenoxy)]phosphazene (PCEP) is a high molecular weight, biodegradable water soluble polymer that has been well characterized as a safe and effective adjuvant for a number of experimental veterinary vaccines...
January 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28077639/identification-of-a-continuous-neutralizing-epitope-within-ul128-of-human-cytomegalovirus
#3
Flavia Chiuppesi, Teodora Kaltcheva, Meng Zhuo, Peter A Barry, Don J Diamond, Felix Wussow
: As human cytomegalovirus (HCMV) is the most common infectious cause of fetal anomalies during pregnancy, developing a vaccine that prevents HCMV infection is considered a global health priority. Although HCMV immune correlates of protection are only poorly defined, neutralizing antibodies (NAb) targeting the envelope pentamer complex (PC) composed of subunits gH, gL, UL128, UL130, and UL131A are thought to contribute in preventing HCMV infection. Here, we describe a continuous target sequence within UL128 that is recognized by a previously isolated potent PC-specific NAb, termed 13B5...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28073178/polyclonal-and-monoclonal-antibodies-for-induction-therapy-in-kidney-transplant-recipients
#4
REVIEW
Penny Hill, Nicholas B Cross, A Nicholas R Barnett, Suetonia C Palmer, Angela C Webster
BACKGROUND: Prolonging kidney transplant survival is an important clinical priority. Induction immunosuppression with antibody therapy is recommended at transplantation and non-depleting interleukin-2 receptor monoclonal antibodies (IL2Ra) are considered first line. It is suggested that recipients at high risk of rejection should receive lymphocyte-depleting antibodies but the relative benefits and harms of the available agents are uncertain. OBJECTIVES: We aimed to: evaluate the relative and absolute effects of different antibody preparations (except IL2Ra) when used as induction therapy in kidney transplant recipients; determine how the benefits and adverse events vary for each antibody preparation; determine how the benefits and harms vary for different formulations of antibody preparation; and determine whether the benefits and harms vary in specific subgroups of recipients (e...
January 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28069361/dna-mva-protein-vaccination-of-rhesus-macaques-induces-hiv-specific-immunity-in-mucosal-associated-lymph-nodes-and-functional-antibodies
#5
Gerald K Chege, Wendy A Burgers, Tracey L Müller, Clive M Gray, Enid G Shephard, Susan W Barnett, Guido Ferrari, David Montefiori, Carolyn Williamson, Anna-Lise Williamson
Successful future HIV vaccines are expected to generate an effective cellular and humoral response against the virus in both the peripheral blood and mucosal compartments. We previously reported the development of DNA-C and MVA-C vaccines based on HIV-1 subtype C and demonstrated their immunogenicity when given in a DNA prime-MVA boost combination in a nonhuman primate model. In the current study, rhesus macaques previously vaccinated with a DNA-C and MVA-C vaccine regimen were re-vaccinated 3.5years later with MVA-C followed by a protein vaccine based on HIV-1 subtype C envelope formulated with MF59 adjuvant (gp140Env/MF59), and finally a concurrent boost with both vaccines...
January 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28067204/cd9-monoclonal-antibody-conjugated-pegylated-liposomes-for-targeted-delivery-of-rapamycin-in-the-treatment-of-cellular-senescence
#6
Hanh Thuy Nguyen, Raj Kumar Thapa, Beom Soo Shin, Jee-Heon Jeong, Jae-Ryong Kim, Chul Soon Yong, Jong Oh Kim
Premature cellular senescence refers to the state of irreversible cell cycle arrest due to DNA damage or other stresses. In this study, CD9 monoclonal antibody (CD9mAb) was successfully conjugated to the surface of PEGylated liposomes for targeted delivery of rapamycin (LR-CD9mAb) to overcome senescence of CD9 receptor-overexpressing cells. LR-CD9mAb has a small particle size (143.3 �� 2.4 nm), narrow size distribution (polydispersity index: 0.220 �� 0.036), and negative zeta potential (���14...
January 9, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28063991/the-effect-of-polyanhydride-chemistry-in-particle-based-cancer-vaccines-on-the-magnitude-of-the-antitumor-immune-response
#7
Emad I Wafa, Sean M Geary, Jonathan T Goodman, Balaji Narasimhan, Aliasger K Salem
: The goal of this research is to study the effect of polyanhydride chemistry on the immune response induced by a prophylactic cancer vaccine based on biodegradable polyanhydride particles. To achieve this goal, different compositions of polyanhydride copolymers based on 1,8-bis-(p-carboxyphenoxy)-3,6-dioxaoctane (CPTEG), 1,6-bis-(p-carboxyphenoxy)-hexane (CPH), and sebacic anhydride (SA) were synthesized by melt polycondensation, and polyanhydride copolymer particles encapsulating a model antigen, ovalbumin (OVA), were then synthesized using a double emulsion solvent evaporation technique...
January 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28051996/full-preclinical-validation-of-the-123i-labeled-anti-psma-antibody-fragment-scfvd2b-for-prostate-cancer-imaging
#8
Barbara Frigerio, Gerben Franssen, Elena Luison, Alessandro Satta, Ettore Seregni, Marco Colombatti, Giulio Fracasso, Riccardo Valdagni, Delia Mezzanzanica, Otto Boerman, Silvana Canevari, Mariangela Figini
PURPOSE: In the context of prostate cancer (PCa) imaging, the aim of this study was to optimize (in vitro) the specificity and assess preclinically (in vivo) the tumor targeting properties of the 123I-scFvD2B antibody specific for prostate-specific membrane antigen (PSMA). EXPERIMENTAL DESIGN: The 123I-labeling conditions of the antibody fragment scFvD2B, produced in an eukaryotic system under GMP-compliant conditions, were optimized and assessed for purity and immunoreactivity...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28049357/monoclonal-antibodies-formulations-of-marketed-products-and-recent-advances-in-novel-delivery-system
#9
Yanan Cui, Ping Cui, Binlong Chen, Suxin Li, Hua Guan
Monoclonal antibodies (mAbs) are extensively employed for disease diagnosis and treatment because of their high homogeneity and antigen specificity. In recent years, important outcomes have been achieved with mAbs due to their admirable therapeutic efficacy and relatively rare side effects. In clinical practice, several mAb products have been approved by regulatory entities, but their formulations have been highly specific given the complex structure and proteinaceous nature of mAbs. Thus, a great deal of attention has focused on formulations...
January 4, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28046078/immune-response-in-calves-vaccinated-with-type-three-secretion-system-antigens-and-shiga-toxin-2b-subunit-of-escherichia-coli-o157-h7
#10
Luisina Martorelli, Sergio Garbaccio, Daniel A Vilte, Adriana A Albanese, María P Mejías, Marina S Palermo, Elsa C Mercado, Cristina E Ibarra, Angel A Cataldi
Ruminants are the primary reservoir of Shiga-toxin producing Escherichia coli (STEC) O157:H7 and the main source of infection for humans. The aim of this study was to assess the immunogenic properties of a candidate vaccine consisting on the recombinant proteins of E. coli O157:H7 IntiminC280, the carboxy-terminal fraction of Intimin γ, EspB and the fusion protein between the B subunit of Stx2 and Brucella Lumazine Synthase (BLS)(BLS-Stx2B), in Holstein Fresian calves.To accomplish this goal we vaccinated calves with two doses of different vaccine formulations: 2 antigens (IntiminC280, EspB), 3 antigens (IntiminC280, EspB, BLS-Stx2B), BLS-Stx2B alone and a control non-vaccinated group...
2017: PloS One
https://www.readbyqxmd.com/read/28035628/effects-of-histidine-and-sucrose-on-the-biophysical-properties-of-a-monoclonal-antibody
#11
Youngbin Baek, Nripen Singh, Abhiram Arunkumar, Andrew L Zydney
PURPOSE: Histidine is a commonly used buffer in formulation of monoclonal antibodies (mAb), often with excipients like sucrose. The objective of this study was to examine the effects of both histidine and sucrose on the biophysical characteristics of a mAb. METHODS: The hydrodynamic radius of the mAb was determined by dynamic light scattering and confirmed by size exclusion chromatography. Data were also obtained for the osmotic virial coefficients (from osmotic pressure measurements), the solution viscosity, and the mAb thermal stability (using differential scanning calorimetry) at selected conditions...
December 29, 2016: Pharmaceutical Research
https://www.readbyqxmd.com/read/28035201/the-role-of-biosimilars-in-inflammatory-bowel-disease
#12
Sudarshan Paramsothy, Noa Krugliak Cleveland, Nada Zmeter, David T Rubin
Monoclonal antibody biologic therapies, introduced nearly 20 years ago, revolutionized the treatment of inflammatory bowel disease (IBD) and are now well established as the most effective agents available. As the first of these biologic agents starts to come off patent, biosimilar agents have emerged as alternatives to originator drugs. The unique drug development and manufacturing processes involved in the creation of biologic agents pose distinct regulatory challenges compared to generic formulations of conventional medications...
December 2016: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28027451/the-use-of-platelet-rich-and-platelet-poor-plasma-to-enhance-differentiation-of-skeletal-myoblasts
#13
Olga Miroshnychenko, Wen-Teh Chang, Jason L Dragoo
BACKGROUND: Platelet-rich plasma (PRP) has been used to augment tissue repair and regeneration after musculoskeletal injury. However, there is increasing clinical evidence that PRP does not show a consistent clinical effect. Purpose/Hypothesis: This study aimed to compare the effects of the following non-neutrophil-containing (leukocyte-poor) plasma fractions on human skeletal muscle myoblast (HSMM) differentiation: (1) PRP, (2) modified PRP (Mod-PRP), in which transforming growth factor β1 (TGF-β1) and myostatin (MSTN) were depleted, and (3) platelet-poor plasma (PPP)...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28024856/newcastle-disease-vaccines-a-solved-problem-or-a-continuous-challenge
#14
Kiril M Dimitrov, Claudio L Afonso, Qingzhong Yu, Patti J Miller
Newcastle disease (ND) has been defined by the World Organisation for Animal Health as infection of poultry with virulent strains of Newcastle disease virus (NDV). Lesions affecting the neurological, gastrointestinal, respiratory, and reproductive systems are most often observed. The control of ND must include strict biosecurity that prevents virulent NDV from contacting poultry, and also proper administration of efficacious vaccines. When administered correctly to healthy birds, ND vaccines formulated with NDV of low virulence or viral-vectored vaccines that express the NDV fusion protein are able to prevent clinical disease and mortality in chickens upon infection with virulent NDV...
December 16, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/28012776/a-novel-in-feed-delivery-platform-applied-for-oral-dna-vaccination-against-ipnv-enables-high-protection-in-atlantic-salmon-salmon-salar
#15
Miguel Reyes, Cesar Ramírez, Ivan Ñancucheo, Ricardo Villegas, Guillermo Schaffeld, Luis Kiman, Javier Gonzalez, Patricio Oyarzun
BACKGROUND: DNA vaccination has emerged as a promising tool against infectious diseases of farmed fish. Oral delivery allows stress-free administration that is ideal for mass immunization and of paramount importance for infectious pancreatic necrosis (IPN) and other viral disease that affect young salmonids and cause economic losses in aquaculture worldwide. METHODS: We describe the development and in vivo assessment of an "in-feed" formulation strategy for oral immunization with liposomal DNA vaccines, by delivering a vaccine construct coding for an immunogenic region of the VP2 capsid protein...
December 21, 2016: Vaccine
https://www.readbyqxmd.com/read/28012775/comparison-of-functional-assays-used-in-the-clinical-development-of-a-placental-malaria-vaccine
#16
Caroline Pehrson, Kristine K Heno, Yvonne Adams, Mafalda Resende, Line Mathiesen, Max Soegaard, Willem A de Jongh, Thor G Theander, Ali Salanti, Morten A Nielsen
BACKGROUND: Malaria in pregnancy is associated with significant morbidity in pregnant women and their offspring. Plasmodium falciparum infected erythrocytes (IE) express VAR2CSA that mediates binding to chondroitin sulphate A (CSA) in the placenta. Two VAR2CSA-based vaccines for placental malaria are in clinical development. The purpose of this study was to evaluate the robustness and comparability of binding inhibition assays used in the clinical development of placental malaria vaccines...
December 21, 2016: Vaccine
https://www.readbyqxmd.com/read/28010246/safety-and-immunogenicity-of-a-recombinant-staphylococcus-aureus-%C3%AE-toxoid-and-a-recombinant-panton-valentine-leukocidin-subunit-in-healthy-adults
#17
Michael L Landrum, Tahaniyat Lalani, Minoo Niknian, Jason D Maguire, Duane R Hospenthal, Ali Fattom, Kimberly Taylor, Jamie Fraser, Kenneth Wilkins, Michael W Ellis, Paul D Kessler, Rafaat E F Fahim, David R Tribble
We conducted a randomized, double-blind, placebo-controlled dose-escalation study in healthy adults to evaluate the safety and immunogenicity of recombinant Staphylococcus aureus candidate vaccine antigens, recombinant α-toxoid (rAT) and a sub-unit of Panton-Valentine leukocidin (rLukS-PV). 176 subjects were enrolled and randomized within 1 of 11 treatment cohorts: monovalent rAT or rLukS-PV dosages of 10, 25, 50, and 100 μg; bivalent rAT:rLukS dosages of 10:10, 25:25, and 50:50 μg; and alum or saline placebo...
December 23, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28008331/a-meningococcal-outer-membrane-vesicle-vaccine-incorporating-genetically-attenuated-endotoxin-dissociates-inflammation-from-immunogenicity
#18
David J Dowling, Holly Sanders, Wing Ki Cheng, Sweta Joshi, Spencer Brightman, Ilana Bergelson, Carlo Pietrasanta, Simon D van Haren, Sandra van Amsterdam, Jeffrey Fernandez, Germie P J M van den Dobbelsteen, Ofer Levy
BACKGROUND: Group B Neisseria meningitidis, an endotoxin-producing Gram-negative bacterium, causes the highest incidence of group B meningococcus (MenB) disease in the first year of life. The Bexsero vaccine is indicated in Europe from 8 weeks of age. Endotoxin components of outer membrane vesicles (OMVs) or soluble lipopolysaccharide (LPS) represent a potential source of inflammation and residual reactogenicity. The purpose of this study was to compare novel candidate MenB vaccine formulations with licensed vaccines, including Bexsero, using age-specific human in vitro culture systems...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/28007755/low-immunogenicity-of-tocilizumab-in-patients-with-rheumatoid-arthritis
#19
Gerd R Burmester, Ernest Choy, Alan Kivitz, Atsushi Ogata, Min Bao, Akira Nomura, Stuart Lacey, Jinglan Pei, William Reiss, Attila Pethoe-Schramm, Navita L Mallalieu, Thomas Wallace, Margaret Michalska, Herbert Birnboeck, Kay Stubenrauch, Mark C Genovese
OBJECTIVE: Subcutaneous (SC) and intravenous formulations of tocilizumab (TCZ) are available for the treatment of patients with rheumatoid arthritis (RA), based on the efficacy and safety observed in clinical trials. Anti-TCZ antibody development and its impact on safety and efficacy were evaluated in adult patients with RA treated with intravenous TCZ (TCZ-IV) or TCZ-SC as monotherapy or in combination with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs). METHODS: Data from 5 TCZ-SC and 8 TCZ-IV phase III clinical trials and 1 TCZ-IV clinical pharmacology safety study (>50 000 samples) were pooled to assess the immunogenicity profile of TCZ-SC and TCZ-IV (8974 total patients)...
December 22, 2016: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/27996000/central-role-of-cd169-lymph-node-resident-macrophages-in-the-adjuvanticity-of-the-qs-21-component-of-as01
#20
Sophie Detienne, Iain Welsby, Catherine Collignon, Sandrine Wouters, Margherita Coccia, Sophie Delhaye, Laurye Van Maele, Séverine Thomas, Maëlle Swertvaegher, Aurélie Detavernier, Abdelatif Elouahabi, Stanislas Goriely, Arnaud M Didierlaurent
Saponins represent a promising class of vaccine adjuvant. Together with the TLR4-ligand MPL, QS-21 is part of the Adjuvant System AS01, a key component of the malaria and zoster candidate vaccines that display demonstrated clinical efficacy. However, the mechanism of action of QS-21 in this liposomal formulation is poorly understood. Upon intra-muscular immunisation, we observed that QS-21 rapidly accumulated in CD169(+) resident macrophages of the draining lymph node where it elicited a local innate immune response...
December 20, 2016: Scientific Reports
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