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https://www.readbyqxmd.com/read/29147623/tissue-resident-memory-t-cells-play-a-key-role-in-the-efficacy-of-cancer-vaccines
#1
C Granier, C Blanc, S Karaki, T Tran, H Roussel, E Tartour
Resident memory CD8(+)T cells (TRM) usually defined by the CD103 marker represent a new subset of long-lived memory T cells that remain in the tissues. We directly demonstrate their specific role in cancer vaccine-induced tumor regression. In human, they also seem to play a major role in tumor immunosurveillance.
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147613/cd103-cells-at-the-forefront-of-anticancer-immunity
#2
EDITORIAL
Claire Vanpouille-Box, Lorenzo Galluzzi
No abstract text is available yet for this article.
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29139478/trigger-happy-resident-memory-cd4-t-cells-inhabit-the-human-lungs
#3
A E Oja, B Piet, C Helbig, R Stark, D van der Zwan, H Blaauwgeers, E B M Remmerswaal, D Amsen, R E Jonkers, P D Moerland, M A Nolte, R A W van Lier, P Hombrink
Resident memory T cells (TRM) reside in the lung epithelium and mediate protective immunity against respiratory pathogens. Although lung CD8(+) TRM have been extensively characterized, the properties of CD4(+) TRM remain unclear. Here we determined the transcriptional signature of CD4(+) TRM, identified by the expression of CD103, retrieved from human lung resection material. Various tissue homing molecules were specifically upregulated on CD4(+) TRM, whereas expression of tissue egress and lymph node homing molecules were low...
November 15, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29139476/detection-of-hiv-1-specific-gastrointestinal-tissue-resident-cd8-t-cells-in-chronic-infection
#4
Brenna E Kiniry, Shengbin Li, Anupama Ganesh, Peter W Hunt, Ma Somsouk, Pamela J Skinner, Steven G Deeks, Barbara L Shacklett
Tissue-resident memory (TRM) CD8(+) T-cells are non-recirculating, long-lived cells housed in tissues that can confer protection against mucosal pathogens. Human immunodeficiency virus-1 (HIV-1) is a mucosal pathogen and the gastrointestinal tract is an important site of viral pathogenesis and transmission. Thus, CD8(+) TRM cells may be an important effector subset for controlling HIV-1 in mucosal tissues. This study sought to determine the abundance, phenotype, and functionality of CD8(+) TRM cells in the context of chronic HIV-1 infection...
November 15, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29130830/enhanced-cd103-expression-and-reduced-frequencies-of-virus-specific-cd8-t-cells-among-airway-lymphocytes-after-influenza-vaccination-of-mice-deficient-in-vitamins-a%C3%A2-%C3%A2-d
#5
Sherri L Surman, Bart G Jones, David L Woodland, Julia L Hurwitz
Previous research has evaluated antibody responses toward an influenza virus vaccine in the context of deficiencies for vitamins A and D (VAD+VDD). Results showed that antibodies and antibody-forming cells in the respiratory tract were reduced in VAD+VDD mice. However, effectors were recovered when oral supplements of vitamins A + D were delivered at the time of vaccination. Here we address the question of how vaccine-induced CD8(+) T cell responses are affected by deficiencies for vitamins A + D. VAD+VDD and control mice were vaccinated with an intranasal, cold-adapted influenza virus A/Puerto Rico/8/34 vaccine, with or without oral supplements of vitamins A + D...
November 13, 2017: Viral Immunology
https://www.readbyqxmd.com/read/29128674/staged-development-of-long-lived-tcr%C3%AE-%C3%AE-th17-resident-memory-t-cell-population-to-candida-albicans-after-skin-infection
#6
Chang Ook Park, Xiujun Fu, Xiaodong Jiang, Youdong Pan, Jessica E Teague, Nicholas Collins, Tian Tian, John T O'Malley, Ryan O Emerson, Ji Hye Kim, Yookyung Jung, Rei Watanabe, Robert C Fuhlbrigge, Francis R Carbone, Thomas Gebhardt, Rachael A Clark, Charles P Lin, Thomas S Kupper
BACKGROUND: Candida albicans is a dimorphic fungus to which humans are exposed early in life and by adulthood it is part of the mycobiome of skin and other tissues. Neonatal skin lacks resident memory T (TRM) cells, but in adults the C. albicans skin test is a surrogate for immunocompetence. Young adult mice raised under SPF conditions are naive to C. albicans, and have recently been shown to have an immune system resembling that of neonatal humans. OBJECTIVE: We studied the evolution of the adaptive cutaneous immune response to Candida...
November 8, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29121080/respiratory-syncytial-virus-elicits-enriched-cd8-t-lymphocyte-responses-in-lung-compared-with-blood-in-african-green-monkeys
#7
Hualin Li, Cheryl Callahan, Michael Citron, Zhiyun Wen, Sinoeun Touch, Morgan A Monslow, Kara S Cox, Daniel J DiStefano, Kalpit A Vora, Andrew Bett, Amy Espeseth
Respiratory syncytial virus (RSV) is a leading cause of serious lower respiratory tract disease in young children and older adults throughout the world. Prevention of severe RSV disease through active immunization is optimal but no RSV vaccine has been licensed so far. Immune mechanisms of protection against RSV infection in humans have not been fully established, thus a comprehensive characterization of virus-specific immune responses in a relevant animal model will be beneficial in defining correlates of protection...
2017: PloS One
https://www.readbyqxmd.com/read/29116372/tumor-derived-high-mobility-group-box-1-and-thymic-stromal-lymphopoietin-are-involved-in-modulating-dendritic-cells-to-activate-t-regulatory-cells-in-a-mouse-model
#8
Yi Zhang, Zuqiang Liu, Xingxing Hao, Ang Li, Jiying Zhang, Cara D Carey, Louis D Falo, Zhaoyang You
High-mobility group box 1 (HMGB1) is involved in the tumor-associated activation of regulatory T cells (Treg), but the mechanisms remain unknown. In a mouse tumor model, silencing HMGB1 in tumor cells or inhibiting tumor-derived HMGB1 not only dampened the capacity of tumor cells to produce thymic stromal lymphopoietin (TSLP), but also aborted the tumor-associated modulation of Treg-activating DC. Tumor-derived HMGB1 triggered the production of TSLP by tumor cells. Importantly, both tumor-derived HMGB1 and TSLP were necessary for modulating DC to activate Treg in a TSLP receptor (TSLPR)-dependent manner...
November 7, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29110361/hairy-cell-leukemia-2018-update-on-diagnosis-risk-stratification-and-treatment
#9
Xavier Troussard, Edouard Cornet
DISEASE OVERVIEW: Hairy cell leukemia (HCL) and HCL-like disorders, including HCL variant (HCL-V) and splenic diffuse red pulp lymphoma (SDRPL), are a very heterogeneous group of mature lymphoid B-cell disorders, characterized by the identification of hairy cells, a specific genetic profile, a different clinical course and the need for appropriate treatment. DIAGNOSIS: Diagnosis of HCL is based on morphological evidence of hairy cells, an HCL immunologic score of 3 or 4 based on the CD11C, CD103, CD123, and CD25 expression, the trephine biopsy which makes it possible to specify the degree of tumoral medullary infiltration and the presence of BRAF V600E somatic mutation...
December 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29109732/ccl3-enhances-antitumor-immune-priming-in-the-lymph-node-via-ifn%C3%AE-with-dependency-on-natural-killer-cells
#10
Frederick Allen, Peter Rauhe, David Askew, Alexander A Tong, Joseph Nthale, Saada Eid, Jay T Myers, Caryn Tong, Alex Y Huang
Lymph node (LN) plays a critical role in tumor cell survival outside of the primary tumor sites and dictates overall clinical response in many tumor types (1, 2). Previously, we and others have demonstrated that CCL3 plays an essential role in orchestrating T cell-antigen-presenting cell (APC) encounters in the draining LN following vaccination, and such interactions enhance the magnitude of the memory T cell pool (3-5). In the current study, we investigate the cellular responses in the tumor-draining lymph nodes (TDLNs) of a CCL3-secreting CT26 colon tumor (L3TU) as compared to wild-type tumor (WTTU) during the priming phase of an antitumor response (≤10 days)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29075958/a-rare-case-of-b-lymphoproliferative-disorder-with-villous-lymphocytes-harboring-t-8-14-q24-q32-translocation
#11
Xiaofeng Shi, Rong Ba, Haiyan You, Qian Jiang, Jiansong Huang, Jianhua Mao, Lanxiu Han, Shuo Zhang, Qin Zhuang, Xianqiu Yu, Lixia Wang, Yun Wang, Dongya Li, Wei Zhu, Yong Zhang, Yan Zhu, Xiaodong Xi
Splenic lymphoma with villous lymphocytes (SLVL) or splenic marginal zone lymphoma with circulating villous lymphocytes is rare, and prolymphocytic transformation of SLVL is rarer. At present, only one case of SLVL with t(8;14)(q24;q32) translocation has been reported. In this study, we report a case of Blymphoproliferative disorder with villous lymphocytes harboring t(8;14)(q24;q32) chromosome translocation that we inclined to SLVL with a prolymphocytic transformation. A 73-year-old female showed marked hepatosplenomegaly and high lymphocytosis (lymphocytes > 200 × 10(9)/L)...
October 27, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/29070650/interleukin-12-from-cd103-batf3-dependent-dendritic-cells-required-for-nk-cell-suppression-of-metastasis
#12
Deepak Mittal, Dipti Vijayan, Eva M Putz, Amelia R Aguilera, Kate A Markey, Jasmin Straube, Stephen Kazakoff, Stephen L Nutt, Kazuyoshi Takeda, Geoffrey R Hill, Nicola Waddell, Mark J Smyth
Several host factors may affect the spread of cancer to distant organs, however the intrinsic role of dendritic cells (DCs) in controlling metastasis is poorly described. Here we show in several tumor models that although the growth of primary tumors in Batf3-deficient mice, which lack cross-presenting DCs, was not different from primary tumors in wild-type (WT) control mice, Batf-deficient mice had increased experimental and spontaneous metastasis and poorer survival. The increased metastasis was independent of CD4+ and CD8+ T lymphocytes, but required NK cells and IFNγ...
October 25, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/29066174/attenuation-of-cd4-cd25-regulatory-t-cells-in-the-tumor-microenvironment-by-metformin-a-type-2-diabetes-drug
#13
Yuki Kunisada, Shingo Eikawa, Nahoko Tomonobu, Shohei Domae, Takenori Uehara, Shohei Hori, Yukihiro Furusawa, Koji Hase, Akira Sasaki, Heiichiro Udono
CD4(+)CD25(+) regulatory T cells (Treg), an essential subset for preventing autoimmune diseases, is implicated as a negative regulator in anti-tumor immunity. We found that metformin (Met) reduced tumor-infiltrating Treg (Ti-Treg), particularly the terminally-differentiated CD103(+)KLRG1(+) population, and also decreased effector molecules such as CTLA4 and IL-10. Met inhibits the differentiation of naïve CD4(+) T cells into inducible Treg (iTreg) by reducing forkhead box P3 (Foxp3) protein, caused by mTORC1 activation that was determined by the elevation of phosphorylated S6 (pS6), a downstream molecule of mTORC1...
October 16, 2017: EBioMedicine
https://www.readbyqxmd.com/read/29063489/mesenchymal-stromal-cells-modulate-gut-inflammation-in-experimental-colitis
#14
Cristhiane Favero de Aguiar, Angela Castoldi, Vinícius Andrade-Oliveira, Aline Ignacio, Flávia Franco da Cunha, Raphael José Ferreira Felizardo, Ênio José Bassi, Niels Olsen Saraiva Câmara, Danilo Candido de Almeida
Inflammatory bowel diseases (IBDs) affect millions of people worldwide and their frequencies in developed countries have increased since the twentieth century. In this context, there is an intensive search for therapies that modulate inflammation and provide tissue regeneration in IBDs. Recently, the immunomodulatory activity of adipose tissue-derived mesenchymal stromal cells (ADMSCs) has been demonstrated to play an important role on several immune cells in different conditions of inflammatory and autoimmune diseases...
October 23, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29056444/long-lived-tissue-resident-hiv-1-specific-memory-cd8-t-cells-are-generated-by-skin-immunization-with-live-virus-vectored-microneedle-arrays
#15
Marija Zaric, Pablo Daniel Becker, Catherine Hervouet, Petya Kalcheva, Barbara Ibarzo Yus, Clement Cocita, Lauren Alexandra O'Neill, Sung-Yun Kwon, Linda Sylvia Klavinskis
The generation of tissue resident memory (TRM) cells at the body surfaces to provide a front line defence against invading pathogens represents an important goal in vaccine development for a wide variety of pathogens. It has been widely assumed that local vaccine delivery to the mucosae is necessary to achieve that aim. Here we characterise a novel micro-needle array (MA) delivery system fabricated to deliver a live recombinant human adenovirus type 5 vaccine vector (AdHu5) encoding HIV-1 gag. We demonstrate rapid dissolution kinetics of the microneedles in skin...
October 19, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29055001/listeria-monocytogenes-replicate-in-bone-marrow-derived-cd11c-cells-but-not-in-dendritic-cells-isolated-from-the-murine-gastrointestinal-tract
#16
Grant S Jones, Victoria C Smith, Sarah E F D'Orazio
Recent fate-mapping studies and gene-expression profiles suggest that commonly used protocols to generate bone marrow-derived cultured dendritic cells yield a heterogeneous mixture, including some CD11c(hi) cells that may not have a bona fide counterpart in vivo. In this study, we provide further evidence of the discordance between ex vivo-isolated and in vitro-cultured CD11c(+) cells by analyzing an additional phenotype, the ability to support cytosolic growth of the facultative intracellular bacterial pathogen Listeria monocytogenes Two days after foodborne infection of mice with GFP-expressing L...
October 20, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29044226/bone-marrow-transplant-induced-alterations-in-notch-signaling-promote-pathologic-th17-responses-to-%C3%AE-herpesvirus-infection
#17
S J Gurczynski, X Zhou, M Flaherty, C A Wilke, B B Moore
Idiopathic pneumonia syndrome (IPS) is a common, often fatal, complication following hematopoietic stem cell transplantation (HSCT) characterized by severe pneumonitis and interstitial fibrosis. Fully reconstituted syngeneic bone marrow transplant (BMT) mice infected with murine γ-herpesvirus-68 develop interleukin-17 (IL-17)-driven pneumonitis and fibrosis, which mimics clinical manifestations of IPS. We found CD103+ and CD11b+ dendritic cells (DCs) are selectively deficient for the Notch ligand, DLL4, following BMT and CD4+ T cells isolated from lungs and spleens of infected BMT mice display Notch signaling defects...
October 18, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29040326/mycobacterium-tuberculosis-infection-modulates-adipose-tissue-biology
#18
Macarena Beigier-Bompadre, Georgina N Montagna, Anja A Kühl, Laura Lozza, January Weiner, Andreas Kupz, Alexis Vogelzang, Hans-Joachim Mollenkopf, Delia Löwe, Silke Bandermann, Anca Dorhoi, Volker Brinkmann, Kai Matuschewski, Stefan H E Kaufmann
Mycobacterium tuberculosis (Mtb) primarily resides in the lung but can also persist in extrapulmonary sites. Macrophages are considered the prime cellular habitat in all tissues. Here we demonstrate that Mtb resides inside adipocytes of fat tissue where it expresses stress-related genes. Moreover, perigonadal fat of Mtb-infected mice disseminated the infection when transferred to uninfected animals. Adipose tissue harbors leukocytes in addition to adipocytes and other cell types and we observed that Mtb infection induces changes in adipose tissue biology depending on stage of infection...
October 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29026596/flow-cytometry-of-duodenal-intraepithelial-lymphocytes-improves-diagnosis-of-celiac-disease-in-difficult-cases
#19
Julio Valle, José Mario T Morgado, Juan Ruiz-Martín, Antonio Guardiola, Miriam Lopes-Nogueras, Almudena García-Vela, Beatriz Martín-Sacristán, Laura Sánchez-Muñoz
BACKGROUND: Diagnosis of celiac disease is difficult when the combined results of serology and histology are inconclusive. Studies using flow cytometry of intraepithelial lymphocytes (IELs) have found that celiac patients have increased numbers of γδ IELs, along with a decrease in CD3-CD103 + IELs. OBJECTIVE: The objective of this article is to assess the role of flow cytometric analysis of IELs in the diagnosis of celiac disease in difficult cases. METHODS: A total of 312 patients with suspicion of celiac disease were included in the study...
October 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29021139/paxillin-binding-to-the-cytoplasmic-domain-of-cd103-promotes-cell-adhesion-and-effector-functions-for-cd8-resident-memory-t-cells-in-tumors
#20
Ludiane Gauthier, Stephanie Corgnac, Marie Boutet, Gwendoline Gros, Pierre Validire, Georges Bismuth, Fathia Mami-Chouaib
CD8+/CD103+ tissue resident memory T cells (TRM cells) accumulate in several human solid tumors where they have been associated with a favorable prognosis. However, the role of CD103 - the α subunit of the integrin αEβ7 (also known as CD103) - in the retention and functions of these TRM is undefined. In this report, we investigated the role of CD103 cytoplasmic domain and the focal adhesion-associated protein paxillin (Pxn) in downstream signaling and functional activities triggered through αE/CD103 chain...
October 11, 2017: Cancer Research
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