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https://www.readbyqxmd.com/read/29778202/porcine-monocyte-derived-dendritic-cells-can-be-differentially-activated-by-vesicular-stomatitis-virus-and-its-matrix-protein-mutants
#1
Guoyan Sun, Xinkui Fang, Hao Wu, Xinchu Zhou, Yong Ke, Tao Sun
Vesicular stomatitis virus (VSV) can cause serious vesicular lesions in pigs, and the matrix (M) protein is its predominant virulence factor. Dendritic cells (DCs) act as the bridge between innate and adaptive immune responses. However, the susceptibility of porcine DCs to VSV infection and the role of M protein in modulating the function of infected DCs are still poorly defined. Thus, this study aimed to determine the ability of virulent wild-type VSV(wtVSV) and two attenuated M protein variants (VSVΔM51 and VSVMT ) to induce maturation of porcine monocyte-derived DCs (MoDCs) in vitro...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777026/endosomal-tlr3-tlr7-and-tlr8-control-neuronal-morphology-through-different-transcriptional-programs
#2
Yun-Fen Hung, Chiung-Ya Chen, Yi-Chun Shih, Hsin-Yu Liu, Chiao-Ming Huang, Yi-Ping Hsueh
Neuroinflammation is associated with diverse neurological disorders. Endosomal Toll-like receptors (TLRs) including TLR3, TLR7, and TLR8 cell-autonomously regulate neuronal differentiation. However, the mechanisms by which these three TLRs affect neuronal morphology are unclear. In this study, we compare these TLRs in mouse neurons. By combining in vitro neuronal cultures, in utero electroporation, and transcriptomic profiling, we show that TLR8, TLR7, and TLR3 promote dendritic pruning via MYD88 signaling...
May 18, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29775453/ts-hsp70-induces-protective-immunity-against-trichinella-spiralis-infection-in-mouse-by-activating-dendritic-cells-through-tlr2-and-tlr4
#3
Rui Zhang, Qing Sun, Yi Chen, Ximeng Sun, Yuan Gu, Zhang Zhao, Yuli Cheng, Limei Zhao, Jingjing Huang, Bin Zhan, Xinping Zhu
BACKGROUND: Trichinellosis is a serious food-borne parasitic zoonosis worldwide. In the effort to develop vaccine against Trichinella infection, we have identified Trichinella spiralis Heat shock protein 70 (Ts-Hsp70) elicits partial protective immunity against T. spiralis infection via activating dendritic cells (DCs) in our previous study. This study aims to investigate whether DCs were activated by Ts-Hsp70 through TLR2 and/or TLR4 pathways. METHODS AND FINDINGS: After blocking with anti-TLR2 and TLR4 antibodies, the binding of Ts-Hsp70 to DCs was significantly reduced...
May 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29775115/immunofluorescent-localization-of-non-myelinating-schwann-cells-and-their-interactions-with-immune-cells-in-mouse-thymus
#4
Dailun Hu, Philip K Nicholls, Changfu Yin, Khama Kelman, Qionglan Yuan, Wayne K Greene, Zhongli Shi, Bin Ma
The thymus is innervated by sympathetic/parasympathetic nerve fibers from the peripheral nervous system (PNS), suggesting a neural regulation of thymic function including T-cell development. Despite some published studies, data on the innervation and nerve-immune interaction inside the thymus remain limited. In the present study, we used immunofluorescent staining of glial fibrillary acidic protein (GFAP) coupled with confocal microscopy/three-dimensional (3D) reconstruction to reveal the distribution of non-myelinating Schwann cells (NMSC) and their interactions with immune cells inside mouse thymus...
May 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29774917/uniform-li-deposition-regulated-via-three-dimensional-polyvinyl-alcohol-nanofiber-networks-for-effective-li-metal-anodes
#5
Gang Wang, Xunhui Xiong, Zhihua Lin, Jie Zheng, Zheng Fenghua, Youpeng Li, Yanzhen Liu, Chenghao Yang, Yiwei Tang, Meilin Liu
Lithium metal anodes are considered to be the most promising anode material for next-generation advanced energy storage devices due to their high reversible capacity and extremely low anode potential. Nevertheless, the formation of dendritic Li, induced by the repeated breaking and repairing of solid electrolyte interphase layers, always causes poor cycling performance and low coulombic efficiency, as well as serious safety problems, which have hindered the practical application of Li anodes for a long time...
May 18, 2018: Nanoscale
https://www.readbyqxmd.com/read/29774619/different-types-of-multiple-synapse-boutons-in-the-cerebellar-cortex-between-physically-enriched-and-ataxic-mutant-mice
#6
Hyun-Wook Kim, Seunghak Oh, Seung Hwan Lee, Sanghoon Lee, Ji-Eun Na, Kea Joo Lee, Im Joo Rhyu
Experience-dependent synapse remodeling is associated with information storage in the nervous system. Neuronal synapses show alteration in various neurological and cognitive disorders in their structure and function. At the ultrastructural level, parallel fiber boutons contacting multiple spines of Purkinje cells in the cerebellar cortex are commonly observed in physiologically enriched animals as well as pathological ataxic mutants. However, the dendritic origin of those spines on parallel fiber multiple-synapse boutons (MSBs) has been poorly understood...
May 18, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29774608/virion-like-membrane-breaking-nanoparticles-with-tumor-activated-cell-and-tissue-dual-penetration-conquer-impermeable-cancer
#7
Xiao Zhang, Xianghui Xu, Yachao Li, Cheng Hu, Zhijun Zhang, Zhongwei Gu
Poor drug penetration into tumor cells and tissues is a worldwide difficulty in cancer therapy. A strategy is developed for virion-like membrane-breaking nanoparticles (MBNs) to smoothly accomplish tumor-activated cell-and-tissue dual-penetration for surmounting impermeable drug-resistant cancer. Tailor-made dendritic arginine-rich peptide prodrugs are designed to mimic viral protein transduction domains and globular protein architectures. Attractively, these protein mimics self-assemble into virion-like nanoparticles in aqueous solution, having highly ordered secondary structure...
May 17, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29774215/importance-of-functional-loss-of-fus-in-ftld-als
#8
REVIEW
Shinsuke Ishigaki, Gen Sobue
Fused in sarcoma (FUS) is an RNA binding protein that regulates RNA metabolism including alternative splicing, transcription, and RNA transportation. FUS is genetically and pathologically involved in frontotemporal lobar degeneration (FTLD)/amyotrophic lateral sclerosis (ALS). Multiple lines of evidence across diverse models suggest that functional loss of FUS can lead to neuronal dysfunction and/or neuronal cell death. Loss of FUS in the nucleus can impair alternative splicing and/or transcription, whereas dysfunction of FUS in the cytoplasm, especially in the dendritic spines of neurons, can cause mRNA destabilization...
2018: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/29774034/targeting-vegf-vegfr-to-modulate-antitumor-immunity
#9
REVIEW
Ju Yang, Jing Yan, Baorui Liu
In addition to the crucial role in promoting the growth of tumor vessels, vascular endothelial growth factor (VEGF) is also immunosuppressive. VEGF can inhibit the function of T cells, increase the recruitment of regulatory T cells (Tregs) and myeloid-derived suppressor cells (MDSCs), and hinder the differentiation and activation of dendritic cells (DCs). Recent studies have investigated the role of antiangiogenic agents in antitumor immunity, especially in recent 3 years. Therefore, it is necessary to update the role of targeting VEGF/VEGFR in antitumor immunity...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774026/critical-role-of-alternative-m2-skewing-in-mir-155-deletion-mediated-protection-of-colitis
#10
Jintao Li, Ji Zhang, Hongxia Guo, Shimin Yang, Weiping Fan, Nan Ye, Zhiqiang Tian, Tiantian Yu, Guoping Ai, Zigang Shen, Haiyang He, Ping Yan, Hui Lin, Xue Luo, Hongli Li, Yuzhang Wu
Inflammatory bowel disease (IBD) is associated with dysregulation of both innate and adaptive immune response in the intestine. MicroRNA (miR)-155 is frequently expressed and functions in many immune cell types. Besides its function in adaptive immunity, miR-155 is a key regulator of the innate immune response in macrophages, dendritic cells, and even in epithelia cells. Although the roles of miR-155 within T and B lymphocytes in colitis have been reported, its function in innate immune cells has not been thoroughly examined...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774025/co-stimulation-impaired-bone-marrow-derived-dendritic-cells-prevent-dextran-sodium-sulfate-induced-colitis-in-mice
#11
Carl Engman, Yesica Garciafigueroa, Brett Eugene Phillips, Massimo Trucco, Nick Giannoukakis
Dendritic cells (DC) are important in the onset and severity of inflammatory bowel disease (IBD). Tolerogenic DC induce T-cells to become therapeutic Foxp3+ regulatory T-cells (Tregs). We therefore asked if experimental IBD could be prevented by administration of bone marrow-derived DC generated under conventional GM-CSF/IL-4 conditions but in the presence of a mixture of antisense DNA oligonucleotides targeting the primary transcripts of CD40, CD80, and CD86. These cell products (which we call AS-ODN BM-DC) have demonstrated tolerogenic activity in preventing type 1 diabetes and preserving beta cell mass in new-onset type 1 diabetes in the NOD mouse strain, in earlier studies...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29773802/cd4-t-cells-are-activated-in-regional-lymph-nodes-and-migrate-to-skin-to-initiate-lymphedema
#12
Gabriela D García Nores, Catherine L Ly, Daniel A Cuzzone, Raghu P Kataru, Geoffrey E Hespe, Jeremy S Torrisi, Jung Ju Huang, Jason C Gardenier, Ira L Savetsky, Matthew D Nitti, Jessie Z Yu, Sonia Rehal, Babak J Mehrara
T cell-mediated responses have been implicated in the development of fibrosis, impaired lymphangiogenesis, and lymphatic dysfunction in secondary lymphedema. Here we show that CD4+ T cells are necessary for lymphedema pathogenesis by utilizing adoptive transfer techniques in CD4 knockout mice that have undergone tail skin and lymphatic excision or popliteal lymph node dissection. We also demonstrate that T cell activation following lymphatic injury occurs in regional skin-draining lymph nodes after interaction with antigen-presenting cells such as dendritic cells...
May 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29773099/-toxoplasma-gondii-rop38-promotes-the-maturation-of-dendritic-cells-mediated-by-tlr4
#13
Heng Zhang, Shanghua Wu, Zhiqiang Shi, Shan Wang, Wei Lu, Yizhen Wu, Pei Sun, Qianming Xu
Objective To investigate the effect of rhoptry protein 38 (ROP38) from Toxoplasma gondii (T. gondii) on the maturation of dendritic cells (DCs) by Toll-like receptor 4 (TLR4) induction in vitro. Methods The total RNA from T. gondii RH strain was extracted by guanidine thiocyanate method, and then cDNA was synthesized with reverse transcription reaction. After ROP38 gene was amplified by PCR, the recombinant pGEX-4T-ROP38 was constructed and expressed under IPTG induction. The recombinant ROP38 protein was detected by SDS-PAGE and Western blot analysis...
March 2018: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29772389/hippocampal-microglia-modifications-in-c57bl-6-pah-enu2-and-btbr-pah-enu2-phenylketonuria-pku-mice-depend-on-the-genetic-background-irrespective-of-disturbed-sleep-patterns
#14
Els van der Goot, Vibeke M Bruinenberg, Femke M Hormann, Ulrich L M Eisel, Francjan J van Spronsen, Eddy A Van der Zee
Toxic levels of phenylalanine in blood and brain is a characteristic of (untreated) phenylketonuria (PKU), leading to cognitive deficits in PKU mice. In addition, our recent findings showed that PKU mice (as well as PKU patients) have a disturbed sleep/wake cycle. As a consequence, sleep loss may contribute to cognitive deficits in PKU. Sleep loss has been linked to increased activation of microglia in the hippocampus. In this study, we set out to examine morphological features of the microglia population in the hippocampus of the mouse PKU model, using both the C57Bl/6 and the BTBR strain and their wild-type controls (age 5...
May 14, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29772024/use-of-human-amniotic-epithelial-cells-in-mouse-models-of-bleomycin-induced-lung-fibrosis-a-systematic-review-and-meta-analysis
#15
Fang He, Aiting Zhou, Shuo Feng
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) urgently requires effective treatment. Bleomycin-induced lung injury models are characterized by initial inflammation and secondary fibrosis, consistent with the pathological features of IPF. Human amniotic epithelial cells (hAECs) exhibit good differentiation potential and paracrine activity and are thus ideal for cell-based clinical therapies. The therapeutic effects of hAECs on lung fibrosis are attributed to many factors. We performed a systematic review of preclinical studies investigating the treatment of pulmonary fibrosis with hAECs to provide suggestions for their clinical use...
2018: PloS One
https://www.readbyqxmd.com/read/29771487/cancer-cell-membrane-coated-adjuvant-nanoparticles-with-mannose-modification-for-effective-anticancer-vaccination
#16
Rong Yang, Jun Xu, Ligeng Xu, Xiaoqi Sun, Qian Chen, Yuhuan Zhao, Rui Peng, Zhuang Liu
Tumor vaccines for cancer prevention and treatment have attracted tremendous interests in the area of cancer immunotherapy in recent years. In this work, we present a strategy to construct cancer vaccines by encapsulating immune-adjuvant nanoparticles with cancer cell membrane modified by mannose. Poly (D, L-lactide-co-glycolide) (PLGA) nanoparticles are firstly loaded with toll-like receptor 7 agonist, imiquimod (R837). Those adjuvant nanoparticles (NP-R) are then coated with cancer cell membranes (NP-R@M), whose surface proteins could act as tumor-specific antigens...
May 17, 2018: ACS Nano
https://www.readbyqxmd.com/read/29769344/efficient-delivery-of-hcmv-t-cell-antigens-by-attenuated-sendai-virus-vectors
#17
Richard Kiener, Markus Fleischmann, Marian Alexander Wiegand, Niels A W Lemmermann, Christiane Schwegler, Christine Kaufmann, Angelique Renzaho, Simone Thomas, Eva Felder, Hans Helmut Niller, Benedikt Asbach, Ralf Wagner
Human Cytomegalovirus (HCMV) represents a major cause of clinical complications during pregnancy as well as immunosuppression and the licensing of a protective HCMV vaccine remains an unmet global need. Herein, we designed and validated novel Sendai virus (SeV) vectors delivering T cell immunogens IE-1 and pp65. To enhance vector safety, we used a replication-deficient strain (rdSeV) that infects target cells in a non-productive manner while retaining viral gene expression. In this study, we explored the impact that transduction with rdSeV has on human dendritic cells (DCs) by comparing it to the parental, replication-competent Sendai virus strain (rcSeV) as well as the poxvirus strain Modified Vaccinia Ankara (MVA)...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769269/trim29-negatively-regulates-the-type-i-ifn-production-in-response-to-rna-virus
#18
Junji Xing, Ao Zhang, Laurie J Minze, Xian Chang Li, Zhiqiang Zhang
The innate immunity is critically important in protection against virus infections, and in the case of RNA viral infections, the signaling mechanisms that initiate robust protective innate immunity without triggering autoimmune inflammation remain incompletely defined. In this study, we found the E3 ligase TRIM29 was specifically expressed in poly I:C-stimulated human myeloid dendritic cells. The induced TRIM29 played a negative role in type I IFN production in response to poly I:C or dsRNA virus reovirus infection...
May 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29769219/yif1-associates-with-yip1-on-golgi-and-regulates-dendrite-pruning-in-sensory-neurons-during-drosophila-metamorphosis
#19
Qiwei Wang, Yan Wang, Fengwei Yu
Pruning that selectively removes unnecessary neurites without causing neuronal death is essential for sculpting the mature nervous system during development. In Drosophila , ddaC sensory neurons specifically prune their larval dendrites with intact axons during metamorphosis. However, it remains unknown about an important role of ER-to-Golgi transport in dendrite pruning. Here, in a clonal screen we identified Yif1, an uncharacterized Drosophila homologue of Yif1p that is known as a regulator of ER-to-Golgi transport in yeast...
May 16, 2018: Development
https://www.readbyqxmd.com/read/29768688/ppar-%C3%AE-in-innate-and-adaptive-lung-immunity
#20
REVIEW
Samuel Philip Nobs, Manfred Kopf
The transcription factor PPAR-γ (peroxisome proliferator-activated receptor-γ) is a key regulator of lung immunity exhibiting multiple cell type specific roles in controlling development and function of the lung immune system. It is strictly required for the generation of alveolar macrophages by controlling differentiation of fetal lung monocyte precursors. Furthermore, it plays an important role in lung allergic inflammation by licensing lung dendritic cell t helper 2 (Th2) priming capacity as well as acting as a master transcription factor for pathogenic Th2 cells...
May 16, 2018: Journal of Leukocyte Biology
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