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https://www.readbyqxmd.com/read/28918474/induction-of-immunogenic-cell-death-in-lymphoma-cells-by-wharton-s-jelly-mesenchymal-stem-cell-conditioned-medium
#1
Daniel Hao Lin, Arijit Biswas, Mahesh Choolani, Chui-Yee Fong, Ariff Bongso
Strategies that induce immunogenic cell death (ICD) or downregulate CD47 or PD-L1 expression have resulted in successful therapeutic options for tumor eradication. Several groups have reported the tumoricidal effects of human umbilical cord Wharton's jelly stem cells (hWJSCs) or its conditioned medium (hWJSC-CM) on certain cancers but the mechanisms have not been elucidated. Since hWJSCs possess immunomodulatory properties, we investigated whether one of the tumoricidal mechanisms was via ICD. We first concentrated hWJSC-CM into a 3 kDa concentrate and then exposed various concentrations of this concentrate to human lymphoma cells to find out which concentration had the greatest tumoricidal effect...
September 16, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28918429/synergy-of-dendritic-cell-vaccines-and-avasimibe-in-treatment-of-head-and-neck-cancer-in-mice
#2
Xin Chen, Qibin Song, Leiming Xia, Ximing Xu
BACKGROUND The main purpose of this study was to explore the antitumor effect and mechanisms of ACAT1 inhibitor combined with CSCs-DC vaccine. MATERIAL AND METHODS We isolated HNSCC CSCs and gained CSCs antigens, then used CSCs antigens to load dendritic cells (DC) and generated a CSCs-DC vaccine. We treated mice after surgical excision of established SCC7 tumors with CSCs-DC vaccine and/or ACAT1 inhibitor, and recorded local tumor relapse and host survival. T cells and B cells were harvested from mice treated with CSCs-DC vaccine and/or ACAT1 inhibitor...
September 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28917991/enhanced-expression-of-pd-l1-and-ifn-%C3%AE-on-dendritic-cells-is-associated-with-bcg-induced-th2-inhibition
#3
A C C Gouveia, F G Braga, M Mota, F M C Silva, A S S Brugiolo, E E Oliveira, M C Ayupe, H C Teixeira, A P Ferreira
Accumulating evidence indicates that the exposure to Mycobacterium bovis bacillus Calmette-Guérin (BCG) prevents the development of allergy and the airway dendritic cells (DCs) may be involved in this protective effect. However, studies to better characterize the specific interactions between BCG and DCs and their role in this mycobacteria-mediated Th2 cell suppression are still ongoing. This study aimed to evaluate the effect of the neonatal BCG vaccination in the innate immune response in a mouse model of ovalbumin (OVA)-induced airway inflammation...
September 14, 2017: Cytokine
https://www.readbyqxmd.com/read/28917953/migratory-capacity-and-function-of-dendritic-cells-from-mesenteric-afferent-lymph-nodes-after-feeding-a-single-dose-of-vitamin-a
#4
Ivanna Novotny Nuñez, Bibiana E Barrios, Lisa Macció-Maretto, Silvia G Correa
Lamina propria dendritic cells (DCs) have a permanent turnover with constitutive migration to mesenteric lymph nodes and replenishment by progenitors. Luminal bacteria and dietary constituents provide key signals that endow DCs their unique properties in vivo. Taking into account that the intestinal immune system is greatly influenced by retinoids, we evaluated in B6 mice 3, 8, 16 and 24 h after feeding a single dose of vitamin A phenotype and function of cells present in mesenteric afferent lymph nodes as well as signals involved in migration...
August 24, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28916727/inflammatory-responses-induce-an-identity-crisis-of-alveolar-macrophages-leading-to-pulmonary-alveolar-proteinosis
#5
Risa Ebina-Shibuya, Mitsuyo Matsumoto, Makoto Kuwahara, Kyoung-Jin Jang, Manabu Sugai, Yoshiaki Ito, Ryo Funayama, Keiko Nakayama, Yuki Sato, Naoto Ishii, Yasunobu Okamura, Kengo Kinoshita, Kohei Kometani, Tomohiro Kurosaki, Akihiko Muto, Masakazu Ichinose, Masakatsu Yamashita, Kazuhiko Igarashi
Pulmonary alveolar proteinosis (PAP) is a severe respiratory disease characterized by dyspnea caused by accumulation of surfactant protein. Dysfunction of alveolar macrophages (AMs), which regulate the homeostasis of surfactant protein, leads to the development of PAP, for example, in mice lacking BTB and CNC homology 2 (Bach2). However, how Bach2 helps prevent PAP is unknown, and cell-specific effects of Bach2 are undefined. Using mice lacking Bach2 in specific cell types, we found that the PAP-phenotype of Bach2-deficient mice is due to Bach2 deficiency in more than two types of immune cells...
September 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28916248/breast-cancer-vaccines-delivered-by-dendritic-cell-targeted-lentivectors-induce-potent-antitumor-immune-responses-and-protect-mice-from-mammary-tumor-growth
#6
Paul D Bryson, Xiaolu Han, Norman Truong, Pin Wang
Breast cancer immunotherapy is a potent treatment option, with antibody therapies such as trastuzumab increasing 2-year survival rates by 50%. However, active immunotherapy through vaccination has generally been clinically ineffective. One potential means of improving vaccine therapy is by delivering breast cancer antigens to dendritic cells (DCs) for enhanced antigen presentation. To accomplish this in vivo, we pseudotyped lentiviral vector (LV) vaccines with a modified Sindbis Virus glycoprotein so that they could deliver genes encoding the breast cancer antigen alpha-lactalbumin (Lalba) or erb-b2 receptor tyrosine kinase 2 (ERBB2 or HER2) directly to resident DCs...
September 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28916224/lack-of-differences-in-radiation-induced-immunogenicity-parameters-between-hpv-positive-and-hpv-negative-human-hnscc-cell-lines
#7
Karolin Schneider, Vanesa Bol, Vincent Grégoire
BACKGROUND AND PURPOSE: Clinical studies indicate that patients with HPV/p16-associated head & neck squamous cell carcinoma (HNSCC) represent a subgroup with a better prognosis and improved response to conventional radiotherapy. Involvement of immune-based factors has been hypothesized. In the present study, we investigated radiation-induced differences in release of damage associated molecular patterns (DAMPs), cytokines and activation of dendritic cells (DCs) in HPV-positive and negative HNSCC cancer cell lines...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28915996/alternative-strategy-for-visceral-leishmaniosis-control-hisak70-salmonella-choleraesuis-pulsed-dendritic-cells
#8
Gustavo Domínguez-Bernal, Abel Martínez-Rodrigo, Alicia Mas, M Mar Blanco, José A Orden, Ricardo De La Fuente, Javier Carrión
Here, we describe a novel approach that exploits an attenuated mutant of Salmonella enterica serovar Choleraesuis as carrier to deliver a plasmid encoding protein HisAK70. Subsequently, dendritic cells (DCs) were pulsed with this vaccine vector. The aim of this study was to evaluate the effectiveness of the prepared HisAK70-S. Choleraesuis-pulsed DCs (HisAK70-SAL DCs) against visceral leishmaniosis (VL). In our ex vivo model of infection, the prepared formulations could decrease parasite growth by up to 80% by augmenting the production of IL-12p40 and by reducing arginase activity (ARG)...
October 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28915900/a-randomized-phase-ii-study-to-assess-the-effect-of-adjuvant-immunotherapy-using-%C3%AE-galcer-pulsed-dendritic-cells-in-the-patients-with-completely-resected-stage-ii-iiia-non-small-cell-lung-cancer-study-protocol-for-a-randomized-controlled-trial
#9
Hideo Saka, Chiyoe Kitagawa, Yukito Ichinose, Mitsuhiro Takenoyama, Hidenori Ibata, Tatsuo Kato, Koji Takami, Motohiro Yamashita, Tadashi Maeda, Sadanori Takeo, Hitoshi Ueda, Kan Okabayashi, Seiji Nagashima, Tadayuki Oka, Hidenori Kouso, Seiichi Fukuyama, Kentaro Yoshimoto, Mototsugu Shimokawa, Akiko M Saito, Suminobu Ito
BACKGROUND: As the toxicity associated with the α-GalCer-pulsed dendritic cell (DC) therapy could be considered to be negligible, its addition to postoperative adjuvant chemotherapy would be expected to greatly improve the therapeutic effect, and could result in prolonged survival. The aim of the present study is to compare the therapeutic efficacy of alpha-galactosylceramide-pulsed DC therapy in patients who have undergone a complete resection of stage II-IIIA non-small-cell lung cancer (NSCLC) followed by postoperative adjuvant therapy with cisplatin plus vinorelbine, to that in patients who did not receive additional treatment (surgical resection plus postoperative adjuvant chemotherapy only)...
September 15, 2017: Trials
https://www.readbyqxmd.com/read/28915878/the-immune-mechanism-of-mycoplasma-hyopneumoniae-168-vaccine-strain-through-dendritic-cells
#10
Yumeng Shen, Weiwei Hu, Yanna Wei, Zhixin Feng, Qian Yang
BACKGROUND: Mycoplasma hyopneumoniae (Mhp) causes porcine enzootic pneumonia, a disease that cause major economic losses in the pig industry. Dendritic cells (DCs), the most effective antigen-presenting cells, are widely distributed beneath respiratory epithelium, DCs uptake and present antigens to T cells, to initiate protective immune responses in different infections. In this study, we investigated the role of porcine DCs in vaccine Mhp-168 exposure. RESULTS: The antigen presenting ability of DCs were improved by vaccine Mhp-168 exposure...
September 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28915405/hepatic-immunopathology-during-occult-hepacivirus-re-infection
#11
Cordelia Manickam, Amanda J Martinot, Rhianna A Jones, Valerie Varner, R Keith Reeves
Despite drug advances for Hepatitis C virus (HCV), re-infections remain prevalent in high-risk populations. Unfortunately, the role of preexisting viral immunity and how it modulates re-infection is unclear. GBV-B infection of common marmosets is a useful model to study tissue immune responses in hepacivirus infections, and in this study we re-challenged 4 animals after clearance of primary viremia. Although only low-to-absent viremia was observed following re-challenge, GBV-B viral RNA was detectable in liver, confirming re-infection...
September 12, 2017: Virology
https://www.readbyqxmd.com/read/28914464/expression-of-caveolin-1-in-the-interfollicular-but-not-the-follicle-associated-epithelial-cells-in-the-bursa-of-fabricius-of-chickens
#12
Ildikó Bódi, Krisztina Minkó, Orsolya Fölker, Zsófia Benyeda, Balázs Felföldi, Attila Magyar, Anna Kiss, Vilmos Palya, Imre Oláh
The surface epithelium of the bursa of Fabricius consists of interfollicular (IFE) and follicle-associated epithelium (FAE). The IFE comprises (i) cylindrical-shaped secretory cells (SC) and (ii) cuboidal basal cells (BCs). The FAE provides histological and two-way functional connections between the bursal lumen and medulla of the follicle. We used a carbon solution and anti-caveolin-1 (Cav-1) to study the endocytic activity of FAE. Carbon particles entered the intercellular space of FAE, but the carbon particles were not internalized by the FAE cells...
September 15, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28914053/construction-of-functional-coating-with-durable-and-broad-spectrum-antibacterial-potential-based-on-mussel-inspired-dendritic-polyglycerol-and-in-situ-formed-copper-nanoparticles
#13
Mingjun Li, Lingyan Gao, Christoph Schlaich, Jianguang Zhang, Ievgen S Donskyi, Guozhi Yu, Wenzhong Li, Zhaoxu Tu, Jens Rolff, Tanja Schwerdtle, Rainer Haag, Nan Ma
A novel surface coating with durable broad-spectrum antibacterial ability was prepared based on mussel-inspired dendritic polyglycerol (MI-dPG) embedded with copper nanoparticles (Cu NPs). The functional surface coating is fabricated via a facile dip-coating process followed by in-situ reduction of copper ions with a MI-dPG coating to introduce Cu NPs into the coating matrix. This coating has been demonstrated efficient long term antibacterial properties against Escherichia coli (E. coli), Staphylococcus aureus (S...
September 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28913556/high-dose-vitamin-d3-supplementation-decreases-the-number-of-colonic-cd103-dendritic-cells-in-healthy-subjects
#14
Nina Friis Bak, M Bendix, S Hald, L Reinert, M K Magnusson, J Agnholt
PURPOSE: Vitamin D may induce tolerance in the intestinal immune system and has been shown to regulate the phenotype of tolerogenic intestinal dendritic cells (DCs) in vitro. It is unknown whether vitamin D supplementation affects human intestinal DCs in vivo, and we aimed to investigate the tolerability and effect on intestinal CD103(+)DCs of high-dose vitamin D3 treatment in healthy subjects. METHODS: Ten healthy subjects received a total of 480,000 IU oral vitamin D3 over 15 days and colonic biopsies were obtained before and after intervention by endoscopy...
September 14, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28913431/ultrahigh-current-density-anodes-with-interconnected-li-metal-reservoir-through-overlithiation-of-mesoporous-alf3-framework
#15
Hansen Wang, Dingchang Lin, Yayuan Liu, Yuzhang Li, Yi Cui
Lithium (Li) metal is the ultimate solution for next-generation high-energy density batteries but is plagued from commercialization by infinite relative volume change, low Coulombic efficiency due to side reactions, and safety issues caused by dendrite growth. These hazardous issues are further aggravated under high current densities needed by the increasing demand for fast charging/discharging. We report a one-step fabricated Li/Al4Li9-LiF nanocomposite (LAFN) through an "overlithiation" process of a mesoporous AlF3 framework, which can simultaneously mitigate the abovementioned problems...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28913366/the-differential-contribution-of-the-innate-immune-system-to-a-good-pathological-response-in-the-breast-and-axillary-lymph-nodes-induced-by-neoadjuvant-chemotherapy-in-women-with-large-and-locally-advanced-breast-cancers
#16
Viriya Kaewkangsadan, Chandan Verma, Jennifer M Eremin, Gerard Cowley, Mohammad Ilyas, Sukchai Satthaporn, Oleg Eremin
The tumour microenvironment consists of malignant cells, stroma, and immune cells. The role of adaptive immunity in inducing a pathological complete response (pCR) in breast cancer with neoadjuvant chemotherapy (NAC) is well studied. The contribution of innate immunity, however, is poorly documented. Breast tumours and axillary lymph nodes (ALNs) from 33 women with large and locally advanced breast cancers (LLABCs) undergoing NAC were immunohistochemically assessed for tumour-infiltrating macrophages (TIMs: M1 and M2), neutrophils (TINs), and dendritic cells (TIDCs) using labelled antibodies and semiquantitative methods...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28912828/dendritic-immunotherapy-improvement-for-an-optimal-control-murine-model
#17
J C Rangel-Reyes, J C Chimal-Eguía, E Castillo-Montiel
Therapeutic protocols in immunotherapy are usually proposed following the intuition and experience of the therapist. In order to deduce such protocols mathematical modeling, optimal control and simulations are used instead of the therapist's experience. Clinical efficacy of dendritic cell (DC) vaccines to cancer treatment is still unclear, since dendritic cells face several obstacles in the host environment, such as immunosuppression and poor transference to the lymph nodes reducing the vaccine effect. In view of that, we have created a mathematical murine model to measure the effects of dendritic cell injections admitting such obstacles...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28912507/fast-track-development-of-an-in-vitro-3d-lung-immune-cell-model-to-study-aspergillus-infections
#18
P Chandorkar, W Posch, V Zaderer, M Blatzer, M Steger, C G Ammann, U Binder, M Hermann, P Hörtnagl, C Lass-Flörl, D Wilflingseder
To study interactions of airborne pathogens, e.g. Aspergillus (A.) fumigatus with upper and lower respiratory tract epithelial and immune cells, we set up a perfused 3D human bronchial and small airway epithelial cell system. Culturing of normal human bronchial or small airway epithelial (NHBE, SAE) cells under air liquid interphase (ALI) and perfusion resulted in a significantly accelerated development of the lung epithelia associated with higher ciliogenesis, cilia movement, mucus-production and improved barrier function compared to growth under static conditions...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912381/invariant-natural-killer-t-cells-promote-immunogenic-maturation-of-lung-dendritic-cells-in-mouse-models-of-asthma
#19
Qing He, Linlin Liu, Qiaoyu Yang, Ailing Wang, Shuo Chen, Ruiyun Li, Yi Huang, Guqin Zhang, Xuhong Ding, Hongying Yu, Suping Hu, Hanxiang Nie
Our previous study showed that invariant natural killer T (iNKT) cells might act as an adjuvant to promote Th2 inflammatory responses in an OVA-induced mouse model of allergic asthma, but the mechanism remains unknown. To clarify the underlying mechanism through which iNKT cells promote Th2 inflammatory responses, we investigated the modulatory influence of iNKT cells on phenotypic and functional maturation of lung dendritic cells (LDCs) using iNKT cell-knockout mice, specific iNKT cell activation, co-culture experiments, and adoptive transfer of iNKT cells in mouse models of asthma...
September 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28912296/exuberant-nodal-proliferation-of-mature-plasmacytoid-dendritic-cells-in-a-patient-with-chronic-myelomonocytic-leukemia
#20
Huan-You Wang, Andrew L Feldman
No abstract text is available yet for this article.
September 14, 2017: Blood
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