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Dendritic cell vaccine

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https://www.readbyqxmd.com/read/29454038/dendritic-cells-as-cancer-therapeutics
#1
REVIEW
Christian E Bryant, Sarah Sutherland, Benjamin Kong, Michael S Papadimitrious, Derek N J Hart
The ability of immune therapies to control cancer has recently generated intense interest. This therapeutic outcome is reliant on T cell recognition of tumour cells. The natural function of dendritic cells (DC) is to generate adaptive responses, by presenting antigen to T cells, hence they are a logical target to generate specific anti-tumour immunity. Our understanding of the biology of DC is expanding, and they are now known to be a family of related subsets with variable features and function. Most clinical experience to date with DC vaccination has been using monocyte-derived DC vaccines...
February 14, 2018: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29453437/enhancement-of-immunomodulative-effect-of-lactic-acid-bacteria-on-plasmacytoid-dendritic-cells-with-sucrose-palmitate
#2
Masaya Kanayama, Yukiko Kato, Toshikazu Tsuji, Yuki Konoeda, Akiko Hashimoto, Osamu Kanauchi, Toshio Fujii, Daisuke Fujiwara
Plasmacytoid dendritic cells (pDCs) play a key role in the immune response against viruses. In addition, recent research has suggested that pDCs possess direct and indirect tumoricidal activities. We previously found that a lactic acid bacteria strain, Lactococcus lactis JCM 5805 (LC-Plasma), stimulated pDCs and prevented viral infection in mouse and human studies. Meanwhile, emulsifiers have recently been highlighted as candidate adjuvants for some viral vaccines and cancer immunotherapies. In this study, we discovered some specific emulsifiers, mainly consisting of sucrose fatty acid esters, that drastically enhance the potency of LC-Plasma to activate pDCs in vitro...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29449630/prime-and-boost-vaccination-elicit-a-distinct-innate-myeloid-cell-immune-response
#3
Jean-Louis Palgen, Nicolas Tchitchek, Jamila Elhmouzi-Younes, Simon Delandre, Inana Namet, Pierre Rosenbaum, Nathalie Dereuddre-Bosquet, Frédéric Martinon, Antonio Cosma, Yves Lévy, Roger Le Grand, Anne-Sophie Beignon
Understanding the innate immune response to vaccination is critical in vaccine design. Here, we studied blood innate myeloid cells after first and second immunization of cynomolgus macaques with the modified vaccinia virus Ankara. The inflammation at the injection site was moderate and resolved faster after the boost. The blood concentration of inflammation markers increased after both injections but was lower after the boost. The numbers of neutrophils, monocytes, and dendritic cells were transiently affected by vaccination, but without any major difference between prime and boost...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29448068/systems-immunology-allows-a-new-view-on-human-dendritic-cells
#4
REVIEW
Joachim L Schultze, Anna C Aschenbrenner
As the most important antigen-presenting cells, dendritic cells connect the innate and adaptive part of our immune system and play a pivotal role in our course of action against invading pathogens as well as during successful vaccination. Immunologists have therefore studied these cells in great detail using flow cytometry-based analyses, in vitro assays and in vivo models, both in murine models and in humans. Albeit, sophisticated, classical immunological, and molecular approaches were often unable to unequivocally determine the subpopulation structure of the dendritic cell lineage and not surprisingly, conflicting results about dendritic cell subsets co-existed throughout the last decades...
February 12, 2018: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29447484/cationic-dda-tdb-liposome-as-a-mucosal-vaccine-adjuvant-for-uptake-by-dendritic-cells-in-vitro-induces-potent-humoural-immunity
#5
Wenjing Qu, Na Li, Rui Yu, Wenbao Zuo, Tingting Fu, Wenling Fei, Yanhui Hou, Yanhua Liu, Jianhong Yang
The cationic dimethyldioctadecylammonium/trehalose 6,6,9-dibehenate (DDA/TDB) liposome is as a strong adjuvant system for vaccines, with remarkable immunostimulatory activity. The mucosal administration of vaccines is a potential strategy for inducing earlier and stronger mucosal immune responses to infectious diseases. In this study, we assessed whether the intranasal administration of cationic DDA/TDB liposomes combined with influenza antigen A (H3N2) can be used as a highly efficacious vaccine to induce mucosal and systemic antibody responses...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29443378/hepatitis-c-virus-e2-envelope-glycoprotein-induces-an-immunoregulatory-phenotype-in-macrophages
#6
Young-Chan Kwon, Keith Meyer, Guangyong Peng, Soumya Chatterjee, Daniel F Hoft, Ranjit Ray
A comprehensive strategy to control HCV infection needs a vaccine. Our phase I study with recombinant HCV E1/E2 EnvGPs as a candidate vaccine did not induce a strong immune response in volunteers. We analyzed the interactions of HCV EnvGPs with human monocyte derived macrophages as antigen presenting cells. HCV E2 induced immune regulatory cytokine IL-10 and sCD163 protein expression in macrophages from 7 of 9 blood donors tested. Further, HCV E2 enhanced Stat3 and suppressed Stat1 activation, reflecting macrophage polarization towards M2 phenotype...
February 14, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29441705/injectable-tough-alginate-cryogels-as-cancer-vaccines
#7
Ting-Yu Shih, Serena O Blacklow, Aileen W Li, Benjamin R Freedman, Sidi Bencherif, Sandeep T Koshy, Max C Darnell, David J Mooney
A covalently crosslinked methacrylated (MA)-alginate cryogel vaccine has been previously shown to generate a potent response against murine melanoma, but is not mechanically robust and requires a large 16G needle for delivery. Here, covalent and ionic crosslinking of cryogels are combined with the hypothesis that this will result in a tough MA-alginate cryogel with improved injectability. All tough cryogels can be injected through a smaller, 18G needle without sustaining any damage, while covalently crosslinked-only cryogels break after injection...
February 14, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29436221/cross-linked-peptide-nanoclusters-for-delivery-of-oncofetal-antigen-as-a-cancer-vaccine
#8
Alexandra N Tsoras, Julie A Champion
Peptide subunit vaccines are desirable because they increase control over the immune response and safety of the vaccine by reducing the risk of off-target responses to molecules other than the target antigen. The immunogenicity of most peptides, however, is low. Peptide nanoclusters (PNC) are proposed as a subunit peptide vaccine delivery system made completely of cross-linked peptide antigen that could improve the immunogenicity of a peptide vaccine. Proof of concept is demonstrated with oncofetal antigen (OFA), an immature laminin receptor protein expressed by many hematologic cancer cells but not by healthy cells...
February 13, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29434859/silencing-of-suppressor-of-cytokine-signaling-1-enhances-the-immunological-effect-of-mucin-1-calreticulin-primed-4t1-cell-treated-dendritic-cells-in-breast-cancer-treatment
#9
Song Qin, Zhipeng Gao, Yu Liu, Changbai Liu, Jun Wang, Li Li Zou
In cancer immunotherapy, dendritic cell (DC)-based vaccines represent a promising, yet challenging, treatment method. In addition to overcoming the low expression levels of antigenic epitopes on cancer cells, it is also necessary to overcome the inhibitory effect of suppressor of cytokine signaling 1 (SOCS1) on DC self-antigen presentation. Our group previously demonstrated that calreticulin (CRT) translocated type I transmembrane glycoprotein mucin 1 (MUC1), a breast cancer antigen, to the surface of 4T1 cells, and that treatment with MUC1-CRT-primed 4T1 cell-treated DCs induced apoptosis in a breast cancer cell line...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434590/killed-whole-cell-oral-cholera-vaccine-induces-ccl20-secretion-by-human-intestinal-epithelial-cells-in-the-presence-of-the-short-chain-fatty-acid-butyrate
#10
Ju-Ri Sim, Seok-Seong Kang, Daesang Lee, Cheol-Heui Yun, Seung Hyun Han
Short-chain fatty acids (SCFAs), such as acetate, butyrate, and propionate, modulate immune responses in the gut. However, the effect of SCFAs on mucosal vaccine-induced immune cell migration is poorly understood. Here, we investigated whether SCFAs modulate chemokine expression induced by the killed whole-cell oral cholera vaccine, Shanchol™, in human intestinal epithelial cells. Shanchol™ induced expression of CCL2, CCL5, CCL20, and CXCL10 at the mRNA level, but not at the protein level. Interestingly, CCL20 secretion was substantially increased by co-stimulation with Shanchol™ and butyrate, while neither acetate nor propionate showed such effect...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29434528/antitumor-efficacy-of-human-monocyte-derived-dendritic-cells-comparing-effects-of-two-monocyte-isolation-methods
#11
Graça S Marques, Zélia Silva, Paula A Videira
Background: Dendritic cells (DCs), which can be used as anti-cancer vaccines, are generally obtained in vitro from isolated CD14+ monocytes (MoDCs). This generates high cell numbers and allows instructing DCs to guarantee effective antitumor responses. However, the impact of the monocyte isolation step in the antitumor effectiveness of the generated MoDCs is still unknown. Here, we compared the most used immunomagnetic technologies for monocyte isolation: magnetic activated cell sorting (MACS) from Miltenyi Biotec and EasySep from STEM CELL...
2018: Biological Procedures Online
https://www.readbyqxmd.com/read/29434238/non-equivalent-antigen-presenting-capabilities-of-dendritic-cells-and-macrophages-in-generating-brain-infiltrating-cd8-t-cell-responses
#12
Courtney S Malo, Matthew A Huggins, Emma N Goddery, Heather M A Tolcher, Danielle N Renner, Fang Jin, Michael J Hansen, Larry R Pease, Kevin D Pavelko, Aaron J Johnson
The contribution of antigen-presenting cell (APC) types in generating CD8 + T cell responses in the central nervous system (CNS) is not fully defined, limiting the development of vaccines and understanding of immune-mediated neuropathology. Here, we generate a transgenic mouse that enables cell-specific deletion of the H-2Kb MHC class I molecule. By deleting H-2K b on dendritic cells and macrophages, we compare the effect of each APC in three distinct models of neuroinflammation: picornavirus infection, experimental cerebral malaria, and a syngeneic glioma...
February 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29433450/pathogen-recognition-by-nk-cells-amplifies-the-pro-inflammatory-cytokine-production-of-monocyte-derived-dc-via-ifn-%C3%AE
#13
Tammy Oth, Thomas H P M Habets, Wilfred T V Germeraad, Marijke I Zonneveld, Gerard M J Bos, Joris Vanderlocht
BACKGROUND: Besides their prominent role in the elimination of infected or malignantly transformed cells, natural killer (NK) cells serve as modulators of adaptive immune responses. Enhancing bidirectional crosstalk between NK cells and dendritic cells (DC) is considered a promising tool to potentiate cancer vaccines. We investigated to what extent direct sensing of viral and bacterial motifs by NK cells contributes to the response of inflammatory DC against the same pathogenic stimulus...
February 13, 2018: BMC Immunology
https://www.readbyqxmd.com/read/29431693/an-antigen-free-plasmacytoid-dendritic-cell-targeting-immunotherapy-to-bolster-memory-cd8-t-cells-in-nonhuman-primates
#14
Yuji Masuta, Takuya Yamamoto, Yayoi Natsume-Kitatani, Tomohiro Kanuma, Eiko Moriishi, Kouji Kobiyama, Kenji Mizuguchi, Yasuhiro Yasutomi, Ken J Ishii
The priming, boosting, and restoration of memory cytotoxic CD8+ T lymphocytes by vaccination or immunotherapy in vivo is an area of active research. Particularly, nucleic acid-based compounds have attracted attention due to their ability to elicit strong Ag-specific CTL responses as a vaccine adjuvant. Nucleic acid-based compounds have been shown to act as anticancer monotherapeutic agents even without coadministration of cancer Ag(s); however, so far they have lacked efficacy in clinical trials. We recently developed a second-generation TLR9 agonist, a humanized CpG DNA (K3) complexed with schizophyllan (SPG), K3-SPG, a nonagonistic Dectin-1 ligand...
February 5, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29428201/the-use-of-gold-nanorods-as-a-new-vaccine-platform-against-schistosomiasis
#15
Natan R G Assis, Anderson J Caires, Bárbara C Figueiredo, Suellen B Morais, Fábio S Mambelli, Fábio V Marinho, Luís O Ladeira, Sergio C Oliveira
Schistosomiasis is an important parasitic disease affecting >207 million people in 76 countries around the world and causing approximately 250,000 deaths per year. At present, the main strategy adopted for the control of schistosomiasis is the use of safe chemotherapy, such as praziquantel. However, the high rates of reinfection after treatment restrict the use of this treatment approach and assume the need for other forms of control such as vaccination. Sm29 is a protein that is localized in the Schistosoma mansoni tegument of adult worms and schistosomula and is considered a powerful vaccine candidate...
February 8, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29427742/modulation-of-dendritic-cell-by-pathogen-antigens-where-do-we-stand
#16
REVIEW
Gabriela Peron, Livia de Lima Thomaz, Larissa Camargo da Rosa, Rodolfo Thomé, Liana Maria Cardoso Verinaud
Dendritic cells (DCs) are essential players in the activation of T cells and in the development of adaptive immune response towards invading pathogens. Upon antigen (Ag) recognition of Pathogen Associated Molecular Patterns (PAMPs) by their receptors (PRRs), DCs are activated and acquire an inflammatory profile. DCs have the ability to direct the profile of helper T (Th) cells towards Th1, Th2, Th17, Th9 and regulatory (Treg) cells. Each subset of Th cells presents a unique gene expression signature and is endowed with the ability to conduct or suppress effector cells in inflammation...
February 7, 2018: Immunology Letters
https://www.readbyqxmd.com/read/29427678/poly-i-c-enhanced-anti-cervical-cancer-immunities-induced-by-dendritic-cells-derived-exosomes
#17
Shisheng Chen, Mingfen Lv, Shan Fang, Wenxia Ye, Yu Gao, Yunsheng Xu
Dendritic cell (DC)-derived exosomes (Dexo) has been confirmed to be able to induce the specific anti-tumor immune response ex vivo and in vivo. Here, the aim of this study was to evaluate the application of the antigen-pulsed Dexo as a new vaccination platform in immunotherapy for cervical cancer. The immunogenic profile of the different Dexo was assessed by the cell proliferation, cytokines secretion and effector functions of CD8+ T cells and the splenocytes from Dexo-vaccinated mice. Furthermore, the anti-tumor immunity elicited by Dexo was further compared in cervical cancer-bearing mice...
February 7, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29426335/oral-recombinant-lactobacillus-vaccine-targeting-the-intestinal-microfold-cells-and-dendritic-cells-for-delivering-the-core-neutralizing-epitope-of-porcine-epidemic-diarrhea-virus
#18
Sunting Ma, Li Wang, Xuewei Huang, Xiaona Wang, Su Chen, Wen Shi, Xinyuan Qiao, Yanping Jiang, Lijie Tang, Yigang Xu, Yijing Li
BACKGROUND: Porcine epidemic diarrhea caused by porcine epidemic diarrhea virus (PEDV) has led to serious economic losses to the swine industry worldwide. In this study, an oral recombinant Lactobacillus casei vaccine against PEDV infection targeting the intestinal microfold (M) cells and dendritic cells (DCs) for delivering the core neutralizing epitope (COE) of PEDV spike protein was developed with M cell-targeting peptide (Col) and dendritic cell-targeting peptide (DCpep). The immunogenicity of the orally administered recombinant strains was evaluated...
February 9, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29425695/hyaluronan-in-the-lymphatics-the-key-role-of-the-hyaluronan-receptor-lyve-1-in-leucocyte-trafficking
#19
REVIEW
David G Jackson
LYVE-1, a close relative of the leucocyte receptor, CD44, is the main receptor for hyaluronan (HA) in lymphatic vessel endothelium and a widely used marker for distinguishing between blood and lymphatic vessels. Enigmatic for many years because of its anomalous HA-binding characteristics, the function of LYVE-1 has just recently been identified as that of a lymphatic docking receptor for dendritic cells, selectively engaging with their surface HA glycocalyx to regulate entry to peripheral lymphatics and migration to downstream lymph nodes for immune activation...
February 6, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29422901/identification-of-a-potential-common-ancestor-for-mammalian-cross-presenting-dendritic-cells-in-teleost-respiratory-surfaces
#20
Irene Soleto, Uwe Fischer, Carolina Tafalla, Aitor G Granja
Dendritic cells (DCs) are highly specialized antigen-presenting cells that bridge innate and adaptive immune responses in vertebrates, being key modulators in the initiation of specific responses. Although teleost fish present the main elements of a fully developed adaptive immune system, not many studies have focused on identifying specific DC subsets in teleost species. Previous work from our group identified in rainbow trout (Oncorhynchus mykiss) skin a DC subpopulation co-expressing CD8α and major histocompatibility complex II β on the cell surface...
2018: Frontiers in Immunology
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