Immunology
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Immunology
Teaching and Learning Immunology. Information you never would have searched for!
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Scooped by Gilbert C FAURE
November 17, 2015 2:13 PM
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MICB Allele Genotyping on Microarrays by Improving the Specificity of Extension Primers

MICB Allele Genotyping on Microarrays by Improving the Specificity of Extension Primers | Immunology | Scoop.it
by In-Cheol Baek, Jung-Pil Jang, Eun-Jeong Choi, Tai-Gyu Kim Major histocompatibility complex (MHC) class I chain-related gene B (MICB) encodes a ligand for activating NKG2D that expressed in natural killer cells, γδ T cells, and αβ CD8+ T cells,...
Gilbert C FAURE's insight:
Abstract

Major histocompatibility complex (MHC) class I chain-related gene B (MICB) encodes a ligand for activating NKG2D that expressed in natural killer cells, γδ T cells, and αβ CD8+ T cells, which is associated with autoimmune diseases, cancer, and infectious diseases. Here, we have established a system for genotyping MICB alleles using allele-specific primer extension (ASPE) on microarrays. Thirty-six high quality, allele-specific extension primers were evaluated using strict and reliable cut-off values using mean fluorescence intensity (MFI), whereby an MFI >30,000 represented a positive signal and an MFI <10,000 represented a negative signal. Eight allele-specific extension primers were found to be false positives, five of which were improved by adjusting their length, and three of which were optimized by refractory modification. TheMICB alleles (*002:01, *003, *005:02/*010, *005:03, *008, *009N, *018, and *024) present in the quality control panel could be exactly defined by 22 allele-specific extension primers. MICBgenotypes that were identified by ASPE on microarrays were in full concordance with those identified by PCR-sequence-based typing. In conclusion, we have developed a method for genotyping MICB alleles using ASPE on microarrays; which can be applicable for large-scale single nucleotide polymorphism typing studies of population and disease associations.

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Scooped by Gilbert C FAURE
November 17, 2015 3:57 AM
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Rockefeller's newest faculty member investigates how antibodies are made - The Rockefeller University Newswire

Rockefeller's newest faculty member investigates how antibodies are made - The Rockefeller University Newswire | Immunology | Scoop.it
The Rockefeller University Newswire Rockefeller's newest faculty member investigates how antibodies are made The Rockefeller University Newswire When a pathogen invades the body, the immune system responds by producing proteins called antibodies...
Gilbert C FAURE's insight:

“On the molecular scale, I aim to identify the key genes involved in how B cells choose between remaining within the GC or differentiating into a different cell type,” says Victora. “At the cellular level, the lab will explore how interactions between cells drive affinity maturation and GC development. And at the organ level, we will investigate how different GCs within the same lymphoid organ vary in terms of the antibodies they carry, and how these antibodies change over time to produce an effective antibody response.”

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Scooped by Gilbert C FAURE
November 16, 2015 5:07 AM
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New Funding Opportunities for young immunologists from developing countries

DeadlinesNovember 15, 2015 - 12th DGfI Spring School, February 28 - March 4, 2016December 1, 2015 - 2016 FOCIS Advanced Course in Basic & Clinical Immunology

Gilbert C FAURE's insight:

 

Two travel grant deadlines are approching:

November 15, 2015 - 12th DGfI Spring School, February 28 - March 4, 2016December 1, 2015 - 2016 FOCIS Advanced Course in Basic & Clinical Immunology

NOTE: Students from all countries are welcome to apply - however, only those from developing countries are eligible for IUIS funding.

12th Spring School on Immunology, February 28th to March 4th, 2016
Ettal, Bavaria, Germany
German Society for Immunology

 

The IUIS Education (EDU) and the German Society for Immunology (DGfI) Committees are proud to announce the co-sponsoring of 3 travel awards for applicants from the developing countries.

The stipend covers:

Travel costs of up to 2000 USD (covered by the IUIS)Registration and accommodation for the duration of the school (covered by the DGfI)Any other expenses will be the responsibility of the student.

To qualify: the students must show signs of future leadership. Our mission is to identify tomorrow´s teachers of Immunology and leaders in their field in their home country.

Application:
Please download the application form.
Send to: Ulrike Meltzer ( mail@dgfi.org, NOT springschool@drfz.de as stated on the website) and
clearly state in your email that you are applying for the IUIS-DGfI scholarships.

DEADLINE:  November 15, 2015

 

Every year in spring the German Society for Immunology (DGfI) hosts the ‘Spring School on
Immunology’ in Ettal, Bavaria. In the intimate setting of an old cloister, 60 doctoral students and 25 lecturers, experts in their field, come together to discuss the latest developments in Immunology.

This School is part of the DGfI´s Academy for Immunology and offers advanced training for students who already have good knowledge of Immunology. The School thus primarily addresses doctoral students in the later stages of their PhD training.

The School is based on plenary lectures reviewing the themes of the School while also offering ample time for discussions. Because of the active participation in the sessions and the intense exchange, the students will have excellent opportunities for networking early on in their career.

Topics:
Innate Immunity
Adaptive Immunity
Cutting Edge: Basics & Perspectives
Tumor/Allergy/Autoimmunity
Infection/Vaccination
Career Planning/Publishing

 

 

FOR YOUNG IMMUNOLOGISTS FROM THE DEVELOPING WORLD

The Federation of Clinical Immunology Societies (FOCIS) announces the 2016 FOCIS Advanced Course in Basic & Clinical Immunology at the Hotel Valley Ho, Scottsdale, Arizona, USA, February 3-6, 2016. Course Directors: Drs Shiv Pillair and Jane Buckner.

The IUIS Education (EDU) and Gender & Equality Career Development (GEC) Committees in collaboration with FOCISwill co-sponsor 4 trainees from the developing world to attend this course. IUIS will pay for a travel bursary of $2,000 US maximum, while FOCIS will pay for registration, 4-night accommodation and meals during the conference. Additional expenses will be the responsibility of the student.

This initiative has been very successful in the last 7 years and students really appreciated. The candidates should have sufficient scientific background and comprehension of English to benefit maximally from the Advanced Course. Prominent speakers will lecture on topics in cellular and molecular immunology, including innate immunity, B & T cells, and cytokines. Special sessions will cover new advances in clinical immunology and the molecular and genetic basis of immune-mediated diseases. There will be ample opportunity for attendees to interact with the faculty inside and outside the lecture room. The target audience includes clinical fellows in disciplines related to immunology (such as rheumatology, allergy, infectious disease, oncology and transplantation) and graduate students and fellows doing basic research with an emphasis on human disease.

Go to the following website to find out more about the course, schedule, speakers, and presentation titles.http://www.focisnet.org

The IUIS Education Committee will do the selection of candidates for the 4 awards.

Do not register on line for this course, if you are applying for the IUIS/ FOCIS support. A brief CV, a letter outlining how you would benefit from this course and a letter of reference from a professor or mentor must be sent by email to: Dr Michelle Letarte, Chair of the IUIS Education Committee < michelle.letarte@sickkids.ca>

DEADLINE: December 1, 2015, in order to allow time for USA VISA processing. Only the awardees will be notified, by December 20th.

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Scooped by Gilbert C FAURE
November 14, 2015 1:53 PM
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Mycobacterium tuberculosis secretory proteins downregulate T cell activation by interfering with proximal and downstream T cell signalling events

Background:
Mycobacterium tuberculosis (M. tuberculosis) modulates host immune response, mainly T cell responses for its own survival leading to disease or latent infection. The molecules and mechanisms utilized to accomplish immune subversion by M.
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Scooped by Gilbert C FAURE
November 13, 2015 1:37 PM
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High PD-L1 Expression Correlates with Metastasis and Poor Prognosis in Oral Squamous Cell Carcinoma

High PD-L1 Expression Correlates with Metastasis and Poor Prognosis in Oral Squamous Cell Carcinoma | Immunology | Scoop.it
by Yueh-Min Lin, Wen-Wei Sung, Ming-Ju Hsieh, Shih-Chen Tsai, Hung-Wen Lai, Shu-Mei Yang, Ko-Hong Shen, Mu-Kuan Chen, Huei Lee, Kun-Tu Yeh, Chih-Jung Chen
PD-L1 has been widely demonstrated to contribute to failed antitumor immunity.
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Suggested by Société Francaise d'Immunologie
November 12, 2015 2:43 PM
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CD Nomenclature 2015: Human Leukocyte Differentiation Antigen Workshops as a Driving Force in Immunology [IMMUNOLOGY NOTES AND RESOURCES]

CD (cluster of differentiation) Ags are cell surface molecules expressed on leukocytes and other cells relevant for the immune system.
Gilbert C FAURE's insight:

 

Abstract

CD (cluster of differentiation) Ags are cell surface molecules expressed on leukocytes and other cells relevant for the immune system. CD nomenclature has been universally adopted by the scientific community and is officially approved by the International Union of Immunological Societies and sanctioned by the World Health Organization. It provides a unified designation system for mAbs, as well as for the cell surface molecules that they recognize. This nomenclature was established by the Human Leukocyte Differentiation Antigens Workshops. In addition to defining the CD nomenclature, these workshops have been instrumental in identifying and determining the expression and function of cell surface molecules. Over the past 30 y, the data generated by the 10 Human Leukocyte Differentiation Antigens Workshops have led to the characterization and formal designation of more than 400 molecules. CD molecules are commonly used as cell markers, allowing the identification and isolation of leukocyte populations, subsets, and differentiation stages. mAbs against these molecules have proven to be essential for biomedical research and diagnosis, as well as in biotechnology. More recently, they have been recognized as invaluable tools for the treatment of several malignancies and autoimmune diseases. In this article, we describe how the CD nomenclature was established, present the official updated list of CD molecules, and provide a rationale for their usefulness in the 21st century.

Krishan Maggon 's curator insight, November 13, 2015 8:37 AM
CD Nomenclature 2015: Human Leukocyte Differentiation Antigen Workshops as a Driving Force in ImmunologyPablo Engel*, Laurence Boumsell†, Robert Balderas‡, Armand Bensussan§, Valter Gattei¶, Vaclav Horejsi‖, Bo-Quan Jin#, Fabio Malavasi**, Frank Mortari††, Reinhard Schwartz-Albiez‡‡, Hannes Stockinger§§,  Menno C. van Zelm¶¶, Heddy Zola‖‖ and Georgina Clark##

+Author Affiliations

*Immunology Unit, Department of Cell Biology, Immunology, and Neurosciences, Medical School, University of Barcelona, Barcelona 08036, Spain;†INSERM, Paris 75014, France;Address correspondence and reprint requests to Dr. Pablo Engel, Immunology Unit, Department of Cell Biology, Immunology, and Neurosciences, Medical School, University of Barcelona, Casanova 143, Barcelona 08036, Spain. E-mail address: pengel@ub.edu
Scooped by Gilbert C FAURE
November 8, 2015 4:26 AM
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Exosomes: Mechanisms of Uptake | InTechOpen

Exosomes: Mechanisms of Uptake | InTechOpen | Immunology | Scoop.it
Exosomes: Mechanisms of Uptake | InTechOpen, Published on: 2015-07-17. Authors: Kelly J. McKelvey, Katie L. Powell, Anthony W. Ashton, et
Gilbert C FAURE's insight:
ReviewAbstract

Exosomes are 30–100 nm microvesicles which contain complex cellular signals of RNA, protein and lipids. Because of this, exosomes are implicated as having limitless therapeutic potential for the treatment of cancer, pregnancy complications, infections, and autoimmune diseases. To date we know a considerable amount about exosome biogenesis and secretion, but there is a paucity of data regarding the uptake of exosomes by immune and non-immune cell types (e.g., cancer cells) and the internal signalling pathways by which these exosomes elicit a cellular response. Answering these questions is of paramount importance.

Keywords: Exosome, immunology, endocytosis
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Scooped by Gilbert C FAURE
November 6, 2015 12:45 AM
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Cd1d regulates B cell development but not B cell accumulation and IL10 production in mice with pathologic CD5 + B cell expansion

Background:
CD1d is a widely expressed lipid antigen presenting molecule required for CD1d-restricted invariant natural killer T (iNKT) cell development.
Gilbert C FAURE's insight:
Conclusions

The results show that CD1d expression and iNKT cells are dispensable for the development, accumulation, or IL10 competence of CD5 + B cells in mice prone to benign or leukemic CLL-like B cell expansion, but reveal a novel role for iNKT cells in supporting B cell progression through the transitional stage of development in these animals. These results suggest CD1d-directed therapies to target CLL could be evaded by downregulating CD1d expression with little effect on continued leukemic CD5 + B cell survival. The data also imply that iNKT cells help restrain pro-leukemic CD8+ T cell expansion in CLL, potentially explaining a reported correlation in human CLL between disease progression, the loss of NKT cells, and a paradoxical increase in CD8 + T cells.

 

OPEN

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Suggested by Société Francaise d'Immunologie
November 5, 2015 2:53 PM
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Inferring Infection Patterns Based on a Connectivity Map of Host ... - Nature.com

Inferring Infection Patterns Based on a Connectivity Map of Host ... - Nature.com | Immunology | Scoop.it
Host responses to infections represent an important pathogenicity determiner, and delineation of host responses can elucidate pathogenesis processes and inform the development of anti-infection therapies.
Gilbert C FAURE's insight:
Abstract

Host responses to infections represent an important pathogenicity determiner, and delineation of host responses can elucidate pathogenesis processes and inform the development of anti-infection therapies. Low cost, high throughput, easy quantitation, and rich descriptions have made gene expression profiling generated by DNA microarrays an optimal approach for describing host transcriptional responses (HTRs). However, efforts to characterize the landscape of HTRs to diverse pathogens are far from offering a comprehensive view. Here, we developed an HTR Connectivity Map based on systematic assessment of pairwise similarities of HTRs to 50 clinically important human pathogens using 1353 gene-expression profiles generated from >60 human cells/tissues. These 50 pathogens were further partitioned into eight robust “HTR communities” (i.e., groups with more consensus internal HTR similarities). These communities showed enrichment in specific infection attributes and differential gene expression patterns. Using query signatures of HTRs to external pathogens, we demonstrated four distinct modes of HTR associations among different pathogens types/class, and validated the reliability of the HTR community divisions for differentiating and categorizing pathogens from a host-oriented perspective. These findings provide a first-generation HTR Connectivity Map of 50 diverse pathogens, and demonstrate the potential for using annotated HTR community to detect functional associations among infectious pathogens.

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Scooped by Gilbert C FAURE
October 31, 2015 12:32 PM
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Expression analysis of surface molecules on human thymic dendritic cells with ... - Nature.com

Expression analysis of surface molecules on human thymic dendritic cells with ... - Nature.com | Immunology | Scoop.it
Clinical & Translational Immunology focuses on the general functioning of the immune system in its broadest sense, with a particular emphasis on its cell biology.
Gilbert C FAURE's insight:

Dendritic cells (DC) in the thymus have an important role in the establishment of central tolerance by promoting negative selection of autoreactive T cells and regulatory T-cell differentiation. Whereas human DC have recently been studied in various tissues in more detail, thymic DC subsets are still ill-defined. In the present work, we studied the binding of 71 monoclonal antibodies (mAb) submitted to the HLDA10 workshop to human CD123+ plasmacytoid DC and the two subsets of conventional DC (cDC, CD141+ and CD11b+) isolated from thymus tissue of infants undergoing corrective heart surgery. Within the panel, we found mAb binding to thymic pDC and both cDC subsets (for example, anti-Clec12A, TIM-3, Clec4A, CCR5, Axl, FLT3), but most of them additionally reacted with other thymic cell types. MAb directed to CD85h (ILT1) and the C-type lectin Clec7A (now CD369) reacted selectively with both cDC subsets, but not with other cells. Only one mAb directed to CD85g (ILT7) stained thymic pDC in a highly specific manner. Clec9A (DNGR1, now CD370) was the only tested HLDA10 antigen exclusively expressed on thymic CD141+ cDC. The present report summarizes all data obtained.

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Scooped by Gilbert C FAURE
October 30, 2015 3:27 PM
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Ectopic lymphoid structures function as microniches for tumor progenitor cells in hepatocellular carcinoma : Nature Immunology : Nature Publishing Group

Ectopic lymphoid structures function as microniches for tumor progenitor cells in hepatocellular carcinoma : Nature Immunology : Nature Publishing Group | Immunology | Scoop.it
Ectopic lymphoid structures develop at sites of chronic inflammation and are generally thought to be beneficial in the control of cancer. Pikarsky and colleagues show that these structures can instead nurture liver tumor progenitor cells.
Gilbert C FAURE's insight:

Ectopic lymphoid-like structures (ELSs) are often observed in cancer, yet their function is obscure. Although ELSs signify good prognosis in certain malignancies, we found that hepatic ELSs indicated poor prognosis for hepatocellular carcinoma (HCC). We studied an HCC mouse model that displayed abundant ELSs and found that they constituted immunopathological microniches wherein malignant hepatocyte progenitor cells appeared and thrived in a complex cellular and cytokine milieu until gaining self-sufficiency. The egress of progenitor cells and tumor formation were associated with the autocrine production of cytokines previously provided by the niche. ELSs developed via cooperation between the innate immune system and adaptive immune system, an event facilitated by activation of the transcription factor NF-κB and abolished by depletion of T cells. Such aberrant immunological foci might represent new targets for cancer therapy.

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Scooped by Gilbert C FAURE
October 30, 2015 12:40 PM
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UCLA researchers discover more than 3000 genes in a little-studied part of the ... - UC Los Angeles

UCLA researchers discover more than 3000 genes in a little-studied part of the ... - UC Los Angeles | Immunology | Scoop.it
Using Broad Stem Cell Research Center’s cell isolation and genetic sequencing technologies and sophisticated bioinformatics, scientists identify elusive LncRNA ...
Gilbert C FAURE's insight:

for immunologists

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Rescooped by Gilbert C FAURE from Immunology, vaccine & infectious diseases
October 28, 2015 8:05 AM
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Bioinformatic and Statistical Analysis of Adaptive Immune Repertoires

High-throughput sequencing (HTS) of immune repertoires has enabled the quantitative analysis of adaptive immune responses and offers the potential to revolutionize research in lymphocyte biology, vaccine profiling, and monoclonal antibody...


Via Denis Hudrisier
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Scooped by Gilbert C FAURE
November 17, 2015 3:58 AM
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Santa Fe College: Immunology Introduction

Santa Fe College Perry Center for Emerging Technologies Immunology Lecture: Introduction Instructor: Jim Thompson.
Gilbert C FAURE's insight:

a large series of courses on immunology from Santa Fe Colleg, NM

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November 16, 2015 5:17 AM
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Distinct Roles of Cytoskeletal Components in Immunological Synapse Formation and Directed Secretion [ANTIGEN RECOGNITION AND RESPONSES]

A hallmark of CD4+ T cell activation and immunological synapse (IS) formation is the migration of the microtubule organization center and associated organelles toward the APCs.
Gilbert C FAURE's insight:

A hallmark of CD4+ T cell activation and immunological synapse (IS) formation is the migration of the microtubule organization center and associated organelles toward the APCs. In this study, we found that when murine CD4+ T cells were treated with a microtubule-destabilizing agent (vinblastine) after the formation of IS, the microtubule organization center dispersed and all of the major cellular organelles moved away from the IS. Cytokines were no longer directed toward the synapse but were randomly secreted in quantities similar to those seen in synaptic secretion. However, if the actin cytoskeleton was disrupted at the same time with cytochalasin D, the organelles did not shift away from the IS. These findings suggest that there is a complex interplay between the microtubules and actin cytoskeleton, where microtubules are important for directing particular cytokines into the synapse, but they are not involved in the amount of cytokines that are produced for at least 1 h after IS formation. In addition, we found that they play a critical role in mobilizing organelles to reorient toward the synapse during T cell activation and in stabilizing organelles against the force that is generated through actin polymerization so that they move toward the APCs. These findings show that there is a complex interplay between these major cytoskeletal components during synapse formation and maintenance

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Scooped by Gilbert C FAURE
November 16, 2015 4:58 AM
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DFG to fund sixteen new research training groups - EurekAlert (press release)

DFG to fund sixteen new research training groups - EurekAlert (press release) | Immunology | Scoop.it
Topics range from key mechanisms of ageing to cultures of critique, 72 million Euros in funding for 4.5-year period, 25-year anniversary of program promoting structured doctoral research and training.
Gilbert C FAURE's insight:

Myeloid antigen-presenting cells, or APCs, play a key role in the human immune response. They are important for vaccinations and in the resistance to infections, but also cause sickness if incorrectly regulated. Many functions of myeloid APCs have not yet been explained. The research locations in Bonn and Melbourne, which specialise in immunology, will therefore investigate a number of different infection models ranging from malaria to bacterial and viral infections. The work of the International Research Training Group "Myeloid Antigen Presenting Cells and the Induction of Adaptive Immunity" will focus on three areas: interaction of myeloid cells with T-cells; modification of T-cells; and interaction in inflammatory responses and infection models. The funding recipients in this International Research Training Group will be able to receive a double doctorate from Bonn and Melbourne.

(Spokesperson: Professor Dr. Christian Kurts, Host University: Rheinische Friedrich Wilhelm University of Bonn; Partner Institution: University of Melbourne, Australia)

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November 13, 2015 1:55 PM
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Profiling of primary peripheral blood- and monocyte-derived dendritic cells ... - Nature.com

Profiling of primary peripheral blood- and monocyte-derived dendritic cells ... - Nature.com | Immunology | Scoop.it

HLDA 2010 OPEN

Gilbert C FAURE's insight:

Dendritic cells (DCs) arise from hematopoietic stem cells and develop into a discrete cellular lineage distinct from other leucocytes. Mainly three phenotypically and functionally distinct DC subsets are described in the human peripheral blood (PB): plasmacytoid DCs (pDCs), which express the key marker CD303 (BDCA-2), and two myeloid DC subsets (CD1c+ DC (mDC1) and CD141+ DC (mDC2)), which express the key markers CD1c (BDCA-1) and CD141 (BDCA-3), respectively. In addition to these primary cell subsets, DCs can also be generated in vitro from either CD34+stem/progenitor cells in the presence of Flt3 (Fms-related tyrosine kinase 3) ligand or from CD14+ monocytes (monocyte-derived DCs (mo-DCs)) in the presence of granulocyte–macrophage colony-stimulating factor+interleukin-4 (GM-CSF+IL-4). Here we compare the reactivity patterns of HLDA10 antibodies (monoclonal antibody (mAb)) with pDCs, CD1c+ DCs and CD141+ DCs, as well as with CD14+-derived mo-DCs cultured for 7 days in the presence of 100 ng/ml GM-CSF plus 20 ng/ml IL-4. A detailed profiling of these DC subsets based on immunophenotyping and multicolour flow cytometry analysis is presented. Using the panel of HLDA10 Workshop mAb, we could verify known targets selectively expressed on discrete DC subsets including CD370 as a selective marker for CD141+ DCs and CD366 as a marker for both myeloid subsets. In addition, vimentin and other markers are heterogeneously expressed on all three subsets, suggesting the existence of so far not identified DC subsets.

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Scooped by Gilbert C FAURE
November 13, 2015 3:49 AM
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Lower expression of GATA3 and T-bet correlates with downregulated IL-10 in ... - Nature.com

Lower expression of GATA3 and T-bet correlates with downregulated IL-10 in ... - Nature.com | Immunology | Scoop.it
Clinical & Translational Immunology focuses on the general functioning of the immune system in its broadest sense, with a particular emphasis on its cell biology.
Gilbert C FAURE's insight:

falciparum malaria

OPEN

Krishan Maggon 's curator insight, November 13, 2015 8:28 AM
Original Article

Citation: Clinical & Translational Immunology (2015) 4, e49; doi:10.1038/cti.2015.30
Published online 6 November 2015

Lower expression of GATA3 and T-bet correlates with downregulated IL-10 in severe falciparum malaria
OPEN

Anusree Mahanta1 and Shashi Baruah1

1Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur, India

Correspondence: Professor S Baruah, Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur 784028, India. E-mail: sashibaruah@gmail.com

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November 11, 2015 12:14 PM
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Blimp-1 homolog Hobit identifies effector-type lymphocytes in humans. - PubMed - NCBI

Blimp-1 homolog Hobit identifies effector-type lymphocytes in humans. - PubMed - NCBI | Immunology | Scoop.it
Eur J Immunol. 2015 Oct;45(10):2945-58. doi: 10.1002/eji.201545650. Epub 2015 Sep 7.
Gilbert C FAURE's insight:
Abstract

Human cytomegalovirus (CMV) induces the formation of effector CD8(+) T cells that are maintained for decades during the latent stage of infection. Effector CD8(+) T cells appear quiescent, but maintain constitutive cytolytic capacity and can immediately produce inflammatory cytokines such as IFN-γ after stimulation. It is unclear how effector CD8(+) T cells can be constitutively maintained in a terminal stage of effector differentiation in the absence of overt viral replication. We have recently described the zinc finger protein Homolog of Blimp-1 in T cells (Hobit) in murine NKT cells. Here, we show that human Hobit was uniformly expressed in effector-type CD8(+) T cells, but not in naive or in most memory CD8(+) T cells. Human CMV-specific but not influenza-specific CD8(+) T cells expressed high levels of Hobit. Consistent with the high homology between the DNA-binding Zinc Finger domains of Hobit and Blimp-1, Hobit displayed transcriptional activity at Blimp-1 target sites. Expression of Hobit strongly correlated with T-bet and IFN-γ expression within the CD8(+) T-cell population. Furthermore, Hobit was both necessary and sufficient for the production of IFN-γ. These data implicate Hobit as a novel transcriptional regulator in quiescent human effector-type CD8(+) T cells that regulates their immediate effector functions.

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Scooped by Gilbert C FAURE
November 6, 2015 12:48 AM
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Immense Immunology Insight: BugsFeed: 7 bad ass organisms that can survive intracellularly in immune cells

RT @immenseimmuno: 7 bad ass organisms that can survive intracellularly in immune cells http://t.co/MfUxKlKGgd #Immunowesome #bugsfeed
Gilbert C FAURE's insight:

funny to memorize

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Suggested by Société Francaise d'Immunologie
November 5, 2015 2:53 PM
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Inflammation-associated genes: risks and benefits to Foxp3+ regulatory T-cell function - O'Connor - 2015 - Immunology - Wiley Online Library

Inflammation-associated genes: risks and benefits to Foxp3+ regulatory T-cell function - O'Connor - 2015 - Immunology - Wiley Online Library | Immunology | Scoop.it
RT @britsocimm: "Foxp3+ Tregs acquire a capacity for pro-inflammatory cytokine production". http://t.co/9yAbUrlUW2 #immunology http://t.co/&hellip;
Gilbert C FAURE's insight:
Summary

Foxp3+ regulatory T (Treg) cells prevent the development of autoimmunity and immunopathology, as well as maintaining homeostasis and tolerance to commensal microorganisms. The suppressive activity of Treg cells is their defining characteristic, generating great interest in their therapeutic potential. However, suppressive and effector functions are not entirely exclusive. Considerable evidence points to the ability of supposedly anti-inflammatory Foxp3-expressing Treg cells to also express transcription factors that have been characterized as cardinal drivers of T effector cell function. We will consider the mounting evidence that Treg cells can function in non-suppressive capacities and review the impetus for this functional change, its relevance to developing immune and autoimmune responses and its significance to the development of Treg-based therapies.

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Scooped by Gilbert C FAURE
November 3, 2015 10:16 AM
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Deubiquitinase MYSM1 Regulates Innate Immunity through Inactivation of TRAF3 and TRAF6 Complexes. - PubMed - NCBI

Immunity. 2015 Oct 20;43(4):647-59. doi: 10.1016/j.immuni.2015.09.010.
Gilbert C FAURE's insight:
Abstract

Pattern-recognition receptors (PRRs) including Toll-like receptors, RIG-I-like receptors, and cytoplasmic DNA receptors are essential for protection against pathogens but require tight control to avert inflammatory diseases. The mechanisms underlying this strict regulation are unclear. MYSM1 was previously described as a key component of epigenetic signaling machinery. We found that in response to microbial stimuli, MYSM1 accumulated in the cytoplasm where it interacted with and inactivated TRAF3 and TRAF6 complexes to terminate PRR pathways for pro-inflammatory and type I interferon responses. Consequently, Mysm1 deficiency in mice resulted in hyper-inflammation and enhanced viral clearance but also susceptibility to septic shock. We identified two motifs in MYSM1 that were essential for innate immune suppression: the SWIRM domain that interacted with TRAF3 and TRAF6 and the metalloproteinase domain that removed K63 polyubiquitins. This study identifies MYSM1 as a key negative regulator of the innate immune system that guards against an overzealous self-destructive immune response.

Copyright © 2015 Elsevier Inc. All rights reserved.

PMID: 26474655 [PubMed - in process]
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Scooped by Gilbert C FAURE
October 30, 2015 4:35 PM
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Scientist Featured On 'Humans Of New York' Can Put Your Immune System Into A ... - Huffington Post

Scientist Featured On 'Humans Of New York' Can Put Your Immune System Into A ... - Huffington Post | Immunology | Scoop.it
Huffington Post
Scientist Featured On 'Humans Of New York' Can Put Your Immune System Into A ...
Huffington Post
The overarching purpose of my research at CCTI is to understand how tolerance becomes broken in patients with autoimmune diseases.
Gilbert C FAURE's insight:

immunology for laypeople

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Scooped by Marcelo de Carvalho Bittencourt
October 30, 2015 12:53 PM
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Aquaporin-9-expressing neutrophils are required for the establishment of contact hypersensitivity

Aquaporin-9-expressing neutrophils are required for the establishment of contact hypersensitivity | Immunology | Scoop.it
Aquaporin-9 (AQP9), a water/glycerol channel protein, is expressed in several immune cells including neutrophils; however, its role in immune response remains unknown.
Gilbert C FAURE's insight:

Aquaporin-9 (AQP9), a water/glycerol channel protein, is expressed in several immune cells including neutrophils; however, its role in immune response remains unknown. Here we show the involvement of AQP9 in hapten-induced contact hypersensitivity (CHS), as a murine model of skin allergic contact dermatitis, using AQP9 knockout (AQP9−/−) mice. First, the CHS response to hapten dinitrofluorobenzene (DNFB) was impaired in AQP9−/− mice compared with wild-type (WT) mice. Adoptive transfer of sensitized AQP9−/− draining lymph node (dLN) cells into WT recipients resulted in a reduced CHS response, indicating impaired sensitization in AQP9−/− mice. Second, administration of WT neutrophils into AQP9−/−mice during sensitization rescued the impaired CHS response. Neutrophil recruitment to dLNs upon hapten application was attenuated by AQP9 deficiency. Coincidentally, AQP9−/− neutrophils showed a reduced CC-chemokine receptor 7 (CCR7) ligand-induced migration efficacy, which was attributed to the attenuated recruitment of neutrophils to dLNs. Furthermore, we found that neutrophil deficiency, observed in AQP9−/−or neutrophil-depleted mice, decreased IL-17A production by dLN cells, which might be responsible for T cell activation during a subsequent CHS response. Taken together, these findings suggest that AQP9 is required for the development of sensitization during cutaneous acquired immune responses via regulating neutrophil function.

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October 28, 2015 4:46 PM
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openBIS ELN-LIMS: an open-source database for academic laboratories

openBIS ELN-LIMS: an open-source database for academic laboratories | Immunology | Scoop.it
The open-source platform openBIS (open Biology Information System) offers an Electronic Laboratory Notebook and a Laboratory Information Management System (ELN-LIMS) solution suitable for the academic life science laboratories. openBIS ELN-LIMS allows researchers to efficiently document their work, to describe materials and methods and to collect raw and analyzed data. The system comes with a user-friendly web interface where data can be added, edited, browsed and searched.
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