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https://www.readbyqxmd.com/read/29150991/population-based-differences-in-immune-system-response-contribute-to-an-increased-risk-of-schizophrenia-in-african-migrants
#1
Milica J Nesic, Nadja P Maric
Among the highest incidences of schizophrenia is the one documented in second-generation migrants of African descent in the Western countries. Interestingly, people of African and European ancestry demonstrate significant genetic-based differences in immune system regulation and response. As a result, the pro-inflammatory phenotype is more pronounced in people of African descent than it is in Europeans. At the same time, the role of the immune system in the etiology of schizophrenia is gaining increased recognition...
November 18, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29150986/memory-t-cells-are-significantly-increased-in-rejecting-liver-allografts-of-rhesus-monkeys
#2
Hwajung Kim, Hyeyoung Kim, Sun-Kyung Lee, Xue-Li Jin, Tae Jin Kim, Chanho Park, Jae-Il Lee, Hyo-Sin Kim, Suk Kyun Hong, Kyung Chul Yoon, Sung Woo Ahn, Kyoung-Bun Lee, Nam-Joon Yi, Jaeseok Yang, Kwang-Woong Lee, Wayne J Hawthorne, Kyung-Suk Suh
INTRODUCTION: The Rhesus monkey (RM) is an excellent preclinical model in kidney, heart and islet transplantation that has provided the basis for new immunosuppressive protocols for clinical studies. However, there remain relatively few liver transplantation (LT) models in nonhuman primates. In this study, we analyzed the immune cell populations of PBMCs and secondary lymphoid organs along with livers of normal rhesus monkeys and compared them to those of rejecting liver transplanted recipient's following withdrawal of immunosuppression...
November 18, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29150961/modulation-of-igg1-immunoeffector-function-by-glycoengineering-of-the-gdp-fucose-biosynthesis-pathway
#3
Ronan M Kelly, Ronald L Kowle, Zhirui Lian, Beth A Strifler, Derrick R Witcher, Bhavin S Parekh, Tongtong Wang, Christopher C Frye
Cross-linking of the Fcγ receptors expressed on the surface of hematopoietic cells by IgG immune complexes triggers the activation of key immune effector mechanisms, including antibody-dependent cell mediated cytotoxicity (ADCC). A conserved N-glycan positioned at the N-terminal region of the IgG CH 2 domain is critical in maintaining the quaternary structure of the molecule for Fcγ receptor engagement. The removal of a single core fucose residue from the N-glycan results in a considerable increase in affinity for FcγRIIIa leading to an enhanced receptor-mediated immunoeffector function...
November 18, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29150944/toll-like-receptor-signaling-pathway-as-a-potential-therapeutic-target-in-colorectal-cancer
#4
REVIEW
Reyhaneh Moradi-Marjaneh, Seyed Mahdi Hassanian, Hamid Fiuji, Saman Soleimanpour, Gordon A Ferns, Amir Avan, Majid Khazaei
Toll like receptor (TLR) signaling is involved in activating innate and adaptive immune responses and plays a critical role in inflammation-induced diseases such as colorectal cancer (CRC). Dysregulation of this signaling pathway can result in disturbance of epithelial layer hemostasis, chronic inflammatory, excessive repair responses and development of CRC. There is now substantial evidence for the benefit of targeting of this pathway in cancer treatment, and several agents have been approved, such as BCG (Bacillus Calmette Guérin), MPL (monophosphoryl lipid A) and imiquimod...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150926/viral-short-orfs-and-their-possible-functions
#5
REVIEW
Yaara Finkel, Noam Stern-Ginossar, Michal Schwartz
Definition of functional genomic elements is one of the greater challenges of the genomic era. Traditionally, putative short Open Reading Frames (sORFs) coding for less than 100 amino acids were disregarded due to computational and experimental limitations, however it has become clear over the past several years that translation of sORFs is pervasive and serves diverse functions. The development of ribosome profiling, allowing identification of translated sequences genome-wide, revealed wide-spread, previously unidentified translation events...
November 18, 2017: Proteomics
https://www.readbyqxmd.com/read/29150846/cancer-stem-cells-as-targets-for-immunotherapy
#6
REVIEW
Amy S Codd, Takayuki Kanaseki, Toshihiko Torigo, Zsuzsanna Tabi
Current cancer therapies target the bulk of the tumour, while a population of highly resistant tumour cells may be able to repopulate the tumour and metastasise to new sites. Cancer cells with such stem cell-like characteristics can be identified based on their phenotypic and/or functional features which may open up ways for their targeted elimination. In this review we discuss potential off-target effects of inhibiting cancer stem-cell self-renewal pathways on immune cells, and summarise some recent immunological studies specifically targeting cancer stem cells based on their unique antigen expression...
November 18, 2017: Immunology
https://www.readbyqxmd.com/read/29150767/cell-migration-in-1d-and-2d-nanofiber-microenvironments
#7
Horacio M Estabridis, Aniket Jana, Amrinder Nain, David J Odde
Understanding how cells migrate in fibrous environments is important in wound healing, immune function, and cancer progression. A key question is how fiber orientation and network geometry influence cell movement. Here we describe a quantitative, modeling-based approach toward identifying the mechanisms by which cells migrate in fibrous geometries having well controlled orientation. Specifically, U251 glioblastoma cells were seeded onto non-electrospinning Spinneret based tunable engineering parameters fiber substrates that consist of networks of suspended 400 nm diameter nanofibers...
November 17, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29150735/glycomics-of-human-embryonic-stem-cells-and-human-induced-pluripotent-stem-cells
#8
REVIEW
Jun-Ichi Furukawa, Kazue Okada, Yasuro Shinohara
Most cells are coated by a dense glycocalyx composed of glycoconjugates such as glycosphingolipids, glycoproteins, and proteoglycans. The overall glycomic profile is believed to be crucial for the diverse roles of glycans, which are mediated by specific interactions that regulate cell-cell adhesion, the immune response, microbial pathogenesis, and other cellular events. Many cell surface markers were discovered and identified as glycoconjugates such as stage-specific embryonic antigen, Tra-1-60/81 and various other cell surface molecules (e...
November 18, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29150718/re-educating-immunity-in-respiratory-allergies-the-potential-for-hematopoietic-stem-cell-mediated-gene-therapy
#9
REVIEW
Jeremy F Brooks, Janet M Davies, James W Wells, Raymond J Steptoe
Respiratory allergies represent a significant disease burden worldwide affecting up to 300 million people globally. Medication and avoidance of known triggers do not address the underlying pathology. Traditional immunotherapies for allergy aim to reinstate immune homeostasis but require years of treatment and have poor long-term efficacy. Novel approaches, such as gene-engineered hematopoietic stem cell transplantation, induce profound antigen-specific tolerance in autoimmunity. Recent evidence shows this approach may also have therapeutic utility for allergy...
November 17, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29150704/evaluation-of-immune-mediated-idiosyncratic-drug-toxicity-using-chimeric-hla-transgenic-mice
#10
Takeshi Susukida, Shigeki Aoki, Kotaro Kogo, Sota Fujimori, Binbin Song, Cong Liu, Shuichi Sekine, Kousei Ito
Immune-mediated idiosyncratic drug toxicity (IDT) is a rare adverse drug reaction, potentially resulting in death. Although genome-wide association studies suggest that the occurrence of immune-mediated IDT is strongly associated with specific human leukocyte antigen (HLA) allotypes, these associations have not yet been prospectively demonstrated. In this study, we focused on HLA-B*57:01 and abacavir (ABC)-induced immune-mediated IDT, and constructed transgenic mice carrying chimeric HLA-B*57:01 (B*57:01-Tg) to determine if this in vivo model may be useful for evaluating immune-mediated IDT...
November 17, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29150700/prevalence-of-intestinal-parasites-in-companion-dogs-with-diarrhea-in-beijing-china-and-genetic-characteristics-of-giardia-and-cryptosporidium-species
#11
Zhongjia Yu, Yang Ruan, Mengjie Zhou, Siyuan Chen, Yinxin Zhang, Liya Wang, Guan Zhu, Yonglan Yu
Companion animals including dogs are one of the important components in One Health. Parasites may cause not only diseases in pet animals but also many zoonotic diseases infecting humans. In this study, we performed a survey of intestinal parasites in fecal specimens (n = 485) collected from outpatient pet dogs with diarrhea in Beijing, China, for the entire year of 2015 by microscopic examination (all parasites) and SSU rRNA-based nested PCR detection (Giardia and Cryptosporidium). We observed a total of 124 (25...
November 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29150694/inhibition-of-intimal-hyperplasia-in-murine-aortic-allografts-by-administration-of-a-small-molecule-tlr4-inhibitor-tak-242
#12
Chuangyan Wu, Xiangchao Ding, Cheng Zhou, Ping Ye, Yuan Sun, Jie Wu, Anchen Zhang, Xiaofan Huang, Lingyun Ren, Ke Wang, Peng Deng, Zhang Yue, Jiuling Chen, Sihua Wang, Jiahong Xia
Graft arteriosclerosis (GA) is the leading cause of late cardiac allograft dysfunction. The innate immune system plays a major role in GA, paprticularly Toll-like receptor 4 (TLR4) signaling. Here we characterized the role of TLR4 and its antagonist TAK-242 in a mouse model of GA. BALB/c (H-2d) donor aortas were transplanted into C57BL/6 (H-2b) recipients, and the mice received intraperitoneal injection of 3 or 10 mg/kg of TAK-242 or vehicle every other day for 1, 2, 4, 6, 8 and 12 weeks. With TAK-242 administration, intimal hyperplasia initially appeared at 2 weeks after transplantation, and TAK-242 postponed the progression of neointimal formation in allogeneic aortic grafts...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150659/ectopic-foxp3-expression-preserves-primitive-features-of-human-hematopoietic-stem-cells-while-impairing-functional-t-cell-differentiation
#13
F R Santoni de Sio, L Passerini, M M Valente, F Russo, L Naldini, M G Roncarolo, R Bacchetta
FOXP3 is the transcription factor ruling regulatory T cell function and maintenance of peripheral immune tolerance, and mutations in its coding gene causes IPEX autoimmune syndrome. FOXP3 is also a cell-cycle inhibitor and onco-suppressor in different cell types. In this work, we investigate the effect of ectopic FOXP3 expression on HSC differentiation and we challenged this approach as a possible HSC-based gene therapy for IPEX. FOXP3-expressing HSC showed reduced proliferation ability and increased maintenance of primitive markers in vitro in both liquid and OP9-ΔL1 co-cultures...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150651/comprehensive-functional-enrichment-analysis-of-male-infertility
#14
Seyed Morteza Razavi, Marjan Sabbaghian, Mahdi Jalili, Adeleh Divsalar, Olaf Wolkenhauer, Ali Salehzadeh-Yazdi
Spermatogenesis is a multifactorial process that forms differentiated sperm cells in a complex microenvironment. This process involves the genome, epigenome, transcriptome, and proteome to ensure the stability of the spermatogonia and supporting cells. The identification of signaling pathways linked to infertility has been hampered by the inherent complexity and multifactorial aspects of spermatogenesis. Systems biology is a promising approach to unveil underlying signaling pathways and genes and identify putative biomarkers...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150650/transcriptome-sequencing-and-differential-gene-expression-analysis-of-the-schistosome-transmitting-snail-oncomelania-hupensis-inhabiting-hilly-and-marshland-regions
#15
Jin-Song Zhao, An-Yun Wang, Hua-Bin Zhao, Yan-Hong Chen
The freshwater snail Oncomelania hupensis is the unique intermediate host of the blood fluke Schistosoma japonicum, which is the major cause of schistosomiasis. The snail inhabits two contrasting environments: the hilly and marshland regions. The hilly snails are smaller in size and have the typical smooth shell, whereas the marshland snails are larger and possess the ribbed shell. To reveal the differences in gene expression between the hilly and marshland snails, a total of six snails, three per environment, were individually examined by RNA sequencing technology...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150603/bacterially-derived-synthetic-mimetics-of-mammalian-oligomannose-prime-antibody-responses-that-neutralize-hiv-infectivity
#16
Ralph Pantophlet, Nino Trattnig, Sasha Murrell, Naiomi Lu, Dennis Chau, Caitlin Rempel, Ian A Wilson, Paul Kosma
Oligomannose-type glycans are among the major targets on the gp120 component of the HIV envelope protein (Env) for broadly neutralizing antibodies (bnAbs). However, attempts to elicit oligomannose-specific nAbs by immunizing with natural or synthetic oligomannose have so far not been successful, possibly due to B cell tolerance checkpoints. Here we design and synthesize oligomannose mimetics, based on the unique chemical structure of a recently identified bacterial lipooligosaccharide, to appear foreign to the immune system...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29150600/mapping-tenascin-c-interaction-with-toll-like-receptor-4-reveals-a-new-subset-of-endogenous-inflammatory-triggers
#17
Lorena Zuliani-Alvarez, Anna M Marzeda, Claire Deligne, Anja Schwenzer, Fiona E McCann, Brian D Marsden, Anna M Piccinini, Kim S Midwood
Pattern recognition underpins innate immunity; the accurate identification of danger, including infection, injury, or tumor, is key to an appropriately targeted immune response. Pathogen detection is increasingly well defined mechanistically, but the discrimination of endogenous inflammatory triggers remains unclear. Tenascin-C, a matrix protein induced upon tissue damage and expressed by tumors, activates toll-like receptor 4 (TLR4)-mediated sterile inflammation. Here we map three sites within tenascin-C that directly and cooperatively interact with TLR4...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29150567/amplifying-ifn-%C3%AE-signaling-in-dendritic-cells-by-cd11c-specific-loss-of-socs1-increases-innate-immunity-to-infection-while-decreasing-adaptive-immunity
#18
Alejandro F Alice, Gwen Kramer, Shelly Bambina, Jason R Baird, Keith S Bahjat, Michael J Gough, Marka R Crittenden
Although prophylactic vaccines provide protective humoral immunity against infectious agents, vaccines that elicit potent CD8 T cell responses are valuable tools to shape and drive cellular immunity against cancer and intracellular infection. In particular, IFN-γ-polarized cytotoxic CD8 T cell immunity is considered optimal for protective immunity against intracellular Ags. Suppressor of cytokine signaling (SOCS)1 is a cross-functional negative regulator of TLR and cytokine receptor signaling via degradation of the receptor-signaling complex...
November 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29150562/the-role-of-mhc-e-in-t-cell-immunity-is-conserved-among-humans-rhesus-macaques-and-cynomolgus-macaques
#19
Helen L Wu, Roger W Wiseman, Colette M Hughes, Gabriela M Webb, Shaheed A Abdulhaqq, Benjamin N Bimber, Katherine B Hammond, Jason S Reed, Lina Gao, Benjamin J Burwitz, Justin M Greene, Fidel Ferrer, Alfred W Legasse, Michael K Axthelm, Byung S Park, Simon Brackenridge, Nicholas J Maness, Andrew J McMichael, Louis J Picker, David H O'Connor, Scott G Hansen, Jonah B Sacha
MHC-E is a highly conserved nonclassical MHC class Ib molecule that predominantly binds and presents MHC class Ia leader sequence-derived peptides for NK cell regulation. However, MHC-E also binds pathogen-derived peptide Ags for presentation to CD8(+) T cells. Given this role in adaptive immunity and its highly monomorphic nature in the human population, HLA-E is an attractive target for novel vaccine and immunotherapeutic modalities. Development of HLA-E-targeted therapies will require a physiologically relevant animal model that recapitulates HLA-E-restricted T cell biology...
November 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29150554/cancer-cells-induce-interleukin-22-production-from-memory-cd4-t-cells-via-interleukin-1-to-promote-tumor-growth
#20
Cornelia Voigt, Peter May, Adrian Gottschlich, Anamarija Markota, Daniel Wenk, Inga Gerlach, Sebastian Voigt, Georgios T Stathopoulos, Kristina A M Arendt, Constanze Heise, Felicitas Rataj, Klaus-Peter Janssen, Melanie Königshoff, Hauke Winter, Isabelle Himsl, Wolfgang E Thasler, Max Schnurr, Simon Rothenfußer, Stefan Endres, Sebastian Kobold
IL-22 has been identified as a cancer-promoting cytokine that is secreted by infiltrating immune cells in several cancer models. We hypothesized that IL-22 regulation would occur at the interface between cancer cells and immune cells. Breast and lung cancer cells of murine and human origin induced IL-22 production from memory CD4(+) T cells. In the present study, we found that IL-22 production in humans is dependent on activation of the NLRP3 inflammasome with the subsequent release of IL-1β from both myeloid and T cells...
November 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
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