keyword
MENU ▼
Read by QxMD icon Read
search

mhcii

keyword
https://www.readbyqxmd.com/read/28446692/linking-species-habitat-and-past-palaeoclimatic-events-to-evolution-of-the-teleost-innate-immune-system
#1
Monica Hongrø Solbakken, Kjetil Lysne Voje, Kjetill Sigurd Jakobsen, Sissel Jentoft
Host-intrinsic factors as well as environmental changes are known to be strong evolutionary drivers defining the genetic foundation of immunity. Using a novel set of teleost genomes and a time-calibrated phylogeny, we here investigate the family of Toll-like receptor (TLR) genes and address the underlying evolutionary processes shaping the diversity of the first-line defence. Our findings reveal remarkable flexibility within the evolutionary design of teleost innate immunity characterized by prominent TLR gene losses and expansions...
April 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28445929/the-kinesin-motor-protein-kif7-is-required-for-t-cell-development-and-normal-mhc-expression-on-thymic-epithelial-cells-tec-in-the-thymus
#2
Ching-In Lau, Alessandro Barbarulo, Anisha Solanki, José Ignacio Saldaña, Tessa Crompton
Kif7 is a ciliary kinesin motor protein that regulates mammalian Hedgehog pathway activation through influencing structure of the primary cilium. Here we show that Kif7 is required for normal T-cell development, despite the fact that T-cells lack primary cilia. Analysis of Kif7-deficient thymus showed that Kif7-deficiency increases the early CD44+CD25+CD4-CD8- thymocyte progenitor population but reduces differentiation to CD4+CD8+ double positive (DP) cell. At the transition from DP to mature T-cell, Kif7-deficiency selectively delayed maturation to the CD8 lineage...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28439878/dissecting-and-modelling-the-emergent-murine-tec-compartment-during-ontogeny
#3
Fabian Brunk, Chloé Michel, Tim Holland-Letz, Alla Slynko, Annette Kopp-Schneider, Bruno Kyewski, Sheena Pinto
The origin of the thymic epithelium, i.e. the cortical (cTEC) and medullary (mTEC) epithelial cells, from bipotent stem cells through TEC progenitors and lineage-specific progeny still remains poorly understood. We sought to obtain an unbiased view of the incipient emergence of TEC subsets by following embryonic TEC development based on co-expression of EpCAM, CD80 and MHC class II (MHCII) on non-hematopoietic (CD45(-) ) thymic stromal cells in wild-type BL6 mice. Using a combination of ex vivo analysis, Re-aggregate Thymic Organ Culture (RTOC) reconstitution assays and mathematical modelling, we traced emergent lineage commitment in murine embryonic TECs...
April 25, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28436955/vitamin-a-mediates-conversion-of-monocyte-derived-macrophages-into-tissue-resident-macrophages-during-alternative-activation
#4
Uma Mahesh Gundra, Natasha M Girgis, Michael A Gonzalez, Mei San Tang, Hendrik J P Van Der Zande, Jian-Da Lin, Mireille Ouimet, Lily J Ma, Jordan Poles, Nikollaq Vozhilla, Edward A Fisher, Kathryn J Moore, P'ng Loke
It remains unclear whether activated inflammatory macrophages can adopt features of tissue-resident macrophages, or what mechanisms might mediate such a phenotypic conversion. Here we show that vitamin A is required for the phenotypic conversion of interleukin 4 (IL-4)-activated monocyte-derived F4/80(int)CD206(+)PD-L2(+)MHCII(+) macrophages into macrophages with a tissue-resident F4/80(hi)CD206(-)PD-L2(-)MHCII(-)UCP1(+) phenotype in the peritoneal cavity of mice and during the formation of liver granulomas in mice infected with Schistosoma mansoni...
April 24, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28431892/a-humanized-hla-dr4-mouse-model-for-autoimmune-myocarditis
#5
M Emrah Şelli, Anita C Thomas, David C Wraith, Andrew C Newby
Myocarditis, the principal cause of dilated cardiomyopathy and heart failure in young adults, is associated with autoimmunity to human cardiac α-myosin (hCAM) and the DR4 allele of human major histocompatibility II (MHCII). We developed an hCAM-induced myocarditis model in human HLA-DR4 transgenic mice that lack all mouse MHCII genes, demonstrating that immunization for 3weeks significantly increased splenic T-cell proliferative responses and titres of IgG1 and IgG2c antibodies, abolished weight gain, provoked cardiac inflammation and significantly impaired cardiac output and fractional shortening, by echocardiography, compared to adjuvant-injected mice...
April 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28396666/dynamic-changes-in-the-intracellular-association-of-selected-rab-small-gtpases-with-mhc-class-ii-and-dm-during-dendritic-cell-maturation
#6
Gibrán Pérez-Montesinos, Orestes López-Ortega, Jessica Piedra-Reyes, Laura C Bonifaz, José Moreno
Antigen processing for presentation by major histocompatibility complex class II (MHCII) molecules requires the latter to travel through the endocytic pathway together with its chaperons: the invariant chain (Ii) and DM. Nevertheless, the nature of the compartments where MHCII molecules travel to acquire peptides lacks definition regarding molecules involved in intracellular vesicular trafficking, such as Rab small GTPases. We aimed to define which Rab proteins are present during the intracellular transport of MHCII, DM, and Ii through the endocytic pathway on their route to the cell surface during dendritic cell (DC) maturation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28396662/the-role-of-dendritic-cell-maturation-in-the-induction-of-insulin-dependent-diabetes-mellitus
#7
REVIEW
Jacques C Mbongue, Hector A Nieves, Timothy W Torrez, William H R Langridge
Dendritic cells (DCs) are the dominant class of antigen-presenting cells in humans and are largely responsible for the initiation and guidance of innate and adaptive immune responses involved in maintenance of immunological homeostasis. Immature dendritic cells (iDCs) phagocytize pathogens and toxic proteins and in endosomal vesicles degrade them into small fragments for presentation on major histocompatibility complex (MHC) II receptor molecules to naïve cognate T cells (Th0). In addition to their role in stimulation of immunity, DCs are involved in the induction and maintenance of immune tolerance toward self-antigens...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28386257/the-other-function-class-ii-restricted-antigen-presentation-by-b-cells
#8
REVIEW
Lital N Adler, Wei Jiang, Kartik Bhamidipati, Matthew Millican, Claudia Macaubas, Shu-Chen Hung, Elizabeth D Mellins
Mature B lymphocytes (B cells) recognize antigens using their B cell receptor (BCR) and are activated to become antibody-producing cells. In addition, and integral to the development of a high-affinity antibodies, B cells utilize the specialized major histocompatibility complex class II (MHCII) antigen presentation pathway to process BCR-bound and internalized protein antigens and present selected peptides in complex with MHCII to CD4+ T cells. This interaction influences the fate of both types of lymphocytes and shapes immune outcomes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28380350/tumor-associated-macrophages-suppress-the-cytotoxic-activity-of-antimitotic-agents
#9
Oakley C Olson, Hyunjung Kim, Daniela F Quail, Emily A Foley, Johanna A Joyce
Antimitotic agents, including Taxol, disrupt microtubule dynamics and cause a protracted mitotic arrest and subsequent cell death. Despite the broad utility of these drugs in breast cancer and other tumor types, clinical response remains variable. Tumor-associated macrophages (TAMs) suppress the duration of Taxol-induced mitotic arrest in breast cancer cells and promote earlier mitotic slippage. This correlates with a decrease in the phosphorylated form of histone H2AX (γH2AX), decreased p53 activation, and reduced cancer cell death in interphase...
April 4, 2017: Cell Reports
https://www.readbyqxmd.com/read/28378771/mediation-of-transitional-b-cell-maturation-in-the-absence-of-functional-bruton-s-tyrosine-kinase
#10
Shalini Tanwar, Atika Dhar, Vineeth Varanasi, Tapas Mukherjee, Ramanamurthy Boppana, Soumen Basak, Vineeta Bal, Anna George, Satyajit Rath
X-linked immune-deficient (Xid) mice, carrying a mutation in Bruton's tyrosine kinase (Btk), have multiple B cell lineage differentiation defects. We now show that, while Xid mice showed only mild reduction in the frequency of the late transitional (T2) stage of peripheral B cells, the defect became severe when the Xid genotype was combined with either a CD40-null, a TCRbeta-null or an MHC class II (MHCII)-null genotype. Purified Xid T1 and T2 B cells survived poorly in vitro compared to wild-type (WT) cells...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28371522/epitopes-rationally-selected-through-computational-analyses-induce-t-cell-proliferation-in-mice-and-are-recognized-by-serum-from-individuals-infected-with-schistosoma-mansoni
#11
Marcelo D Lopes, Flávio M Oliveira, Ivan E V Coelho, Maria J F Passos, Clarice C Alves, Alex G Taranto, Moacyr C Júnior, Luciana L Santos, Cristina T Fonseca, José A F P Villar, Débora O Lopes
Schistosomiasis is the second leading cause of death due to parasitic diseases in the world. Seeking an alternative for the control of disease, the World Health Organization funded the genome sequencing of the major species related to schistosomiasis to identify potential vaccines and therapeutic targets. Therefore, the aim of this work was to select T and B-cell epitopes from Schistosoma mansoni through computational analyses and evaluate the immunological potential of epitopes in vitro. Extracellular regions of membrane proteins from the Schistosoma mansoni were used to predict promiscuous epitopes with affinity to different human Major Histocompatibility Class II (MHCII) molecules by bioinformatics analysis...
April 3, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28367602/myeloid-cells-expressing-high-level-of-cd45-are-associated-with-a-distinct-activated-phenotype-in-glioma
#12
Susan Brandenburg, Kati Turkowski, Annett Mueller, Yordan T Radev, Sabine Seidlitz, Peter Vajkoczy
Glioblastoma multiforme is characterized by high accumulation of microglia/macrophages. The function of these tumor-infiltrating myeloid cells is not sufficiently elucidated. Therefore, a better understanding of the precise immune cell composition and function in brain tumors is required. In rodent glioma models, two different myeloid cell populations exist, determined by the expression level of CD45, namely CD11b(+)CD45(low) and CD11b(+)CD45(high). Previous analyses of cytokine and marker expression profiles were almost exclusively performed on the entire myeloid cell fraction...
April 3, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28349258/role-of-bone-marrow-derived-cd11c-dendritic-cells-in-systolic-overload-induced-left-ventricular-inflammation-fibrosis-and-hypertrophy
#13
Huan Wang, Dongmin Kwak, John Fassett, Xiaohong Liu, Wu Yao, Xinyu Weng, Xin Xu, Yawei Xu, Robert J Bache, Daniel L Mueller, Yingjie Chen
Inflammatory responses play an important role in the development of left ventricular (LV) hypertrophy and dysfunction. Recent studies demonstrated that increased T-cell infiltration and T-cell activation contribute to LV hypertrophy and dysfunction. Dendritic cells (DCs) are professional antigen-presenting cells that orchestrate immune responses, especially by modulating T-cell function. In this study, we investigated the role of bone marrow-derived CD11c(+) DCs in transverse aortic constriction (TAC)-induced LV fibrosis and hypertrophy in mice...
May 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28331079/characterization-and-vaccine-potential-of-membrane-vesicles-produced-by-francisella-noatunensis-sup-orientalis-in-an-adult-zebrafish-model
#14
Leidy Lagos, Julia I Tandberg, Urska Repnik, Preben Boysen, Erik Ropstad, Deepa Varkey, Ian T Paulsen, Hanne C Winther-Larsen
Vaccine development against extracellular bacteria has been important for the sustainability of the aquaculture industry. In contrast, infections with intracellular pathogens remain largely an unresolved problem. Francisella noatunensis subspecies orientalis (Fno) are Gram-negative, facultative intracellular bacteria that cause the disease francisellosis in fish. Francisellosis is commonly characterized as a chronic granulomatous disease with high morbidity and can result in high mortality depending on the host...
March 22, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28318017/thymic-crosstalk-restrains-the-pool-of-cortical-thymic-epithelial-cells-with-progenitor-properties
#15
Catarina Meireles, Ana R Ribeiro, Rute D Pinto, Catarina Leitão, Pedro M Rodrigues, Nuno L Alves
Cortical (cTEC) and medullary (mTEC) thymic epithelial cells establish key microenvironments for T-cell differentiation and arise from thymic epithelial cell progenitors (TEP). However, the nature of TEPs and the mechanism controlling their stemness in the postnatal thymus remain poorly defined. Using TEC clonogenic assays as a surrogate to survey TEP activity, we found that a fraction of cTECs generates specialized clonal-derived colonies, which contain cells with sustained colony-forming capacity (ClonoTECs)...
March 20, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28296555/the-screening-of-a-microrna-expression-during-development-of-human-macrophages-and-mouse-dendritic-cells
#16
Eui Young So, Trisha Winchester, Toru Ouchi
There is increasing evidence showing specific roles of microRNA in cell differentiation and cancer progression. Here we examine miRNA profiles during maturation of monocytes and bone marrow-derived dendritic cells (BMDCs) in human and mouse, respectively. We have identified significant changes of various miRNA expression during monocyte and BMDC monocyte development via miRNA microarrays, confirmed by quantitative PCR. Increases in miR155 expression positively correlated with increasing maturity of monocyte and BMDC in both mouse and human microarrays, indicating its importance in development...
March 4, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28294314/generation-of-precursor-immature-and-mature-murine-b1-cell-lines-from-c-myc-bcl-xl-overexpressing-pre-bi-cells
#17
Inge Wolf, Corinne Bouquet, Friederike Naumann, Fritz Melchers
Deregulated expression of c-myc and bcl-xL is long known to generate transformed B cells in humans and mice. We overexpressed these genes to induce in vitro and in vivo differentiation of fetal liver-derived mouse pre-BI cells to B1-lineage pre-BII-like, immature and mature B-cell lines and to Ig-secreting cells. In vitro, doxycycline-controlled c-myc/bcl-xL-overexpressing CD19(+) CD93(+) c-kikt(+) IgM(-) pre-BI cells differentiate to and survive as CD19(+) CD93(+) c-kit(-) IgM(+) immature B1 cells. Timed CpG-stimulation of these oncogene-overexpressing pre-B or immature B1 cells generates either CD19(+) CD93(low) c-kit(-) IgM(-) SLC(-) pre-BII-like, or IgM(+) MHCII(+) CD73(+) CD80(+) CD40(+) mature B1-cell lines and IgM-secreting B1 cells in vitro and fixes their state of differentiation...
March 10, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28282624/immunotoxicity-of-organophosphate-flame-retardants-tphp-and-tdcipp-on-murine-dendritic-cells-in%C3%A2-vitro
#18
Derya Canbaz, Adrian Logiantara, Ronald van Ree, Leonie S van Rijt
Organophosphate flame retardants (PFRs) are commonly used as alternatives for the banned polybrominated diphenyl ethers (PBDEs) and are ubiquitously detected in indoor dust. PFRs can be potentially hazardous to respiratory health via the inhalation of house dust. Dendritic cells (DCs) are crucial in the immunological defense against pathogens in the airways. In respiratory allergy however, an aberrant immune response is induced against innocuous proteins, like house dust mite allergens. In this study, we examined whether exposure to PFRs Triphenylphosphate (TPHP) and Tris(1,3-dichloroisopropyl) phosphate (TDCIPP) affected activation/maturation of DCs at steady state and during exposure to house dust mite allergens (HDM)...
February 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/28261209/gm-csf-inhibits-c-kit-and-scf-expression-by-bone-marrow-derived-dendritic-cells
#19
Amairelys Belen Barroeta Seijas, Sonia Simonetti, Sara Vitale, Daniele Runci, Angela Caterina Quinci, Alessandra Soriani, Mattia Criscuoli, Irene Filippi, Antonella Naldini, Federico Maria Sacchetti, Umberto Tarantino, Francesco Oliva, Eleonora Piccirilli, Angela Santoni, Francesca Di Rosa
Stem cell factor (SCF), the ligand of c-kit, is a key cytokine for hematopoiesis. Hematopoietic precursors express c-kit, whereas differentiated cells of hematopoietic lineage are negative for this receptor, with the exception of NK cells, mast cells, and a few others. While it has long been recognized that dendritic cells (DCs) can express c-kit, several questions remain concerning the SCF/c-kit axis in DCs. This is particularly relevant for DCs found in those organs wherein SCF is highly expressed, including the bone marrow (BM)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28257494/domestication-drive-the-changes-of-immune-and-digestive-system-of-eurasian-perch-perca-fluviatilis
#20
Xiaowen Chen, Jun Wang, Long Qian, Sarah Gaughan, Wei Xiang, Tao Ai, Zhenming Fan, Chenghui Wang
Domestication has altered a variety of traits within the Eurasian perch (Perca fluviatilis), including phenotypic, physiological and behavioral traits of Eurasian perch (Perca fluviatilis). Little is known, however, about the genetic changes between domesticated and wild Eurasian perch. In this study, we assembled a high-quality de novo reference transcriptome and identified differentially expressed genes between wild and domesticated Eurasian perch. A total of 113,709 transcripts were assembled, and 58,380 transcripts were annotated...
2017: PloS One
keyword
keyword
47703
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"