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Lung immunology

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https://www.readbyqxmd.com/read/29346349/early-treatment-of-siv-macaques-with-an-%C3%AE-4%C3%AE-7-mab-alters-virus-distribution-and-preserves-cd4-t-cells-in-later-stages-of-infection
#1
P J Santangelo, C Cicala, S N Byrareddy, K T Ortiz, D Little, K E Lindsay, S Gumber, J J Hong, K Jelicic, K A Rogers, C Zurla, F Villinger, A A Ansari, A S Fauci, J Arthos
Integrin α4β7 mediates the trafficking of leukocytes, including CD4+ T cells, to lymphoid tissues in the gut. Virus mediated damage to the gut is implicated in HIV and SIV mediated chronic immune activation and leads to irreversible damage to the immune system. We employed an immuno-PET/CT imaging technique to evaluate the impact of an anti-integrin α4β7 mAb alone or in combination with ART, on the distribution of both SIV infected cells and CD4+ cells in rhesus macaques infected with SIV. We determined that α4β7 mAb reduced viral antigen in an array of tissues of the lung, spleen, axillary, and inguinal lymph nodes...
December 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29346348/macrophages-regulate-lung-ilc2-activation-via-pla2g5-dependent-mechanisms
#2
M Yamaguchi, S K Samuchiwal, O Quehenberger, J A Boyce, B Balestrieri
Group V phospholipase A2 (Pla2g5) is a lipid-generating enzyme necessary for macrophage effector functions in pulmonary inflammation. However, the lipid mediators involved and their cellular targets have not been identified. Mice lacking Pla2g5 showed markedly reduced lung ILC2 activation and eosinophilia following repetitive Alternaria Alternata inhalation. While Pla2g5-null mice had Wt levels of immediate IL-33 release after one Alternaria dose, they failed to upregulate IL-33 in macrophages following repeated Alternaria administration...
December 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29346215/challenges-and-perspectives-for-immunotherapy-in-adenocarcinoma-of-the-pancreas-the-cancer-immunity-cycle
#3
Markus Kieler, Matthias Unseld, Daniela Bianconi, Gerald Prager
Pancreatic ductal adenocarcinoma (PDAC) is a lethal disease with a devastating 5-year overall survival of only approximately 7%. Although just 4% of all malignant diseases are accounted to PDAC, it will become the second leading cause of cancer-related deaths before 2030. Immunotherapy has proven to be a promising therapeutic option in various malignancies such as melanoma, non-small cell lung cancer (NSCLC), microsatellite instability-high gastrointestinal cancer, urinary tract cancer, kidney cancer, and others...
February 2018: Pancreas
https://www.readbyqxmd.com/read/29343779/characterization-of-signaling-pathways-regulating-the-expression-of-pro-inflammatory-long-form-thymic-stromal-lymphopoietin-upon-human-metapneumovirus-infection
#4
Youxian Li, Cecilie Lund, Ida Nervik, Simon Loevenich, Henrik Døllner, Marit W Anthonsen, Ingvild B Johnsen
Thymic stromal lymphopoietin (TSLP) is associated with several allergic diseases including asthma. Two isoforms of TSLP exist in humans, a long form (lfTSLP) and a short form (sfTSLP), displaying distinct immunological functions. Recently, TSLP was found to be upregulated in human airway cells upon human metapneumovirus (hMPV) infection, yet it remains unclear if the two isoforms are regulated differently during hMPV infection. Importantly, the molecular mechanisms underlying hMPV-mediated TSLP induction remain undescribed...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341339/immunomodulation-by-therapeutic-mesenchymal-stromal-cells-msc-is-triggered-through-phagocytosis-of-msc-by-monocytic-cells
#5
Samantha F H de Witte, Franka Luk, Jesus M Sierra Parraga, Madhu Gargesha, Ana Merino, Sander S Korevaar, Anusha S Shankar, Lisa O'Flynn, Steve J Elliman, Debashish Roy, Michiel G H Betjes, Philip N Newsome, Carla C Baan, Martin J Hoogduijn
Mesenchymal stem or stromal cells (MSC) are under investigation as a potential immunotherapy. MSC are usually administered via intravenous infusion, after which they are trapped in the lungs and die and disappear within a day. The fate of MSC after their disappearance from the lungs is unknown and it is unclear how MSC realize their immunomodulatory effects in their short lifespan. We examined immunological mechanisms determining the fate of infused MSC and the immunomodulatory response associated with it. Tracking viable and dead human umbilical cord MSC (ucMSC) in mice using Qtracker beads (contained in viable cells) and Hoechst33342 (staining all cells) revealed that viable ucMSC were present in the lungs immediately after infusion...
January 17, 2018: Stem Cells
https://www.readbyqxmd.com/read/29332322/tumor-immunology-and-immune-checkpoint-inhibitors-in-non-small-cell-lung-cancer
#6
REVIEW
Chi Young Jung, Scott J Antonia
Lung cancer is one of the most commonly diagnosed cancers and the leading cause of cancer-related deaths worldwide. Although progress in the treatment of advanced non-small cell lung cancer (NSCLC) has been made over the past decade, the 5-year survival rate in patients with lung cancer remains only 10%-20%. Obviously, new therapeutic options are required for patients with advanced NSCLC and unmet medical needs. Cancer immunotherapy is an evolving treatment modality that uses a patient's own immune systems to fight cancer...
January 2018: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29331768/the-cholinergic-anti-inflammatory-pathway-an-innovative-treatment-strategy-for-respiratory-diseases-and-their-comorbidities
#7
REVIEW
Mitsuhiro Yamada, Masakazu Ichinose
Over the past few decades, it has been clarified that the nervous system and immune system have overlapping distributions and their interactions are critical in the regulation of immunological and inflammatory responses. The cholinergic anti-inflammatory pathway, including the parasympathetic nerve systems and humoral factors orchestrate the immune responses to protect the body during infection and tissue injury. Recent investigations have attempted to clarify how the parasympathetic nerve systems attenuate the systemic inflammatory responses and identified the α7 nicotinic acetylcholine receptor (α7nAChR) as a crucial target for attenuating the release of inflammatory cytokines from inflammatory cells including macrophages and dendritic cells...
January 11, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29331367/molecular-characterization-and-differential-expression-analysis-of-interleukin-1%C3%AE-from-ovis-aries
#8
Yi-Ming Shui, Shi-Ying Lu, Xing Guo, Xi-Lin Liu, Bao-Quan Fu, Pan Hu, Lin-Lin Qu, Nan-Nan Liu, Yan-Song Li, Lu-Lu Wang, Fei-Fei Zhai, Dan-Di Ju, Zeng-Shan Liu, Yu Zhou, Hong-Lin Ren
The interleukin-1 family is an important component of the innate immune system and plays an important role in regulating immune responses on the invasion of intracellular parasites in the acquired immune system. Interleukin 1β (IL-1β) is one of the members of the IL-1 family that predominantly activates downstream signaling pathways to play immunological functions of stimulating T and B lymphocyte activation and promoting the various syntheses of inflammatory substances in conjunction with other cytokines...
January 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29329112/master-protocols-in-lung-cancer-experience-from-lung-master-protocol
#9
Vincent K Lam, Vassiliki Papadimitrakopoulou
PURPOSE OF REVIEW: Contemporary advances in the understanding of the molecular and immunologic basis of metastatic lung cancer have firmly changed its treatment paradigm to a personalized, biomarker-driven approach. However, the majority of lung-cancer patients [especially lung squamous cell carcinoma (LUSC)] still do not have effective targeted therapeutic options. Master protocols, such as Lung-MAP, represent an innovative clinical trial approach designed to accelerate evaluation of novel biomarker-driven therapies...
January 10, 2018: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29323162/high-co-expression-of-il-34-and-m-csf-correlates-with-tumor-progression-and-poor-survival-in-lung-cancers
#10
Muhammad Baghdadi, Hiraku Endo, Atsushi Takano, Kozo Ishikawa, Yosuke Kameda, Haruka Wada, Yohei Miyagi, Tomoyuki Yokose, Hiroyuki Ito, Haruhiko Nakayama, Yataro Daigo, Nao Suzuki, Ken-Ichiro Seino
Despite recent advances in diagnosis and treatment of lung cancers, the 5-year survival rate remains unsatisfactory, which necessitates the identification of novel factors that associates with disease progression and malignant degree for improving diagnostic and therapeutic strategies. Recent progress in cancer immunology research has unveiled critical roles for colony stimulating factor 1 receptor (CSF1R) in multiple aspects of the tumor microenvironment. CSF1R is expressed on tumor-associated macrophages (TAMs), and mediates important pro-tumorigenic functions...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322411/in-vivo-infection-model-of-severe-influenza-a-virus
#11
Ashley Mansell, Michelle D Tate
The lung is constantly exposed to both environmental and microbial challenge. As a "contained" organ, it also constitutes an excellent "self-contained" tissue to examine inflammatory responses and cellular infiltration into a diseased organ. Influenza A virus (IAV) causes both mild and severe inflammation that is strain specific following infection of the lung epithelium that spreads to other cells of the lung environment. Here, we describe a method of intranasal inoculation of the lung with IAV that can be used as a preclinical model of infection...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29312770/development-of-pulmonary-langerhans-cell-histiocytosis-in-a-patient-with-established-adenocarcinoma-of-the-lung
#12
Or Kalchiem-Dekel, Adina Paulk, Seth J Kligerman, Allen P Burke, Nirav G Shah, Renee K Dixon
Newly-appearing lung nodules on surveillance imaging in patients with pre-existing lung cancer can present a diagnostic dilemma when attempting to differentiate between metastatic disease, infection, and other inflammatory conditions. Here we report a case of an EGFR-/ALK-/BRAF+ metastatic adenocarcinoma patient who underwent lung biopsy for evaluation of upper-lobe predominant lung nodules revealed to represent pulmonary Langerhans cell histiocytosis (PLCH). The patient was a heavy smoker and admitted to increase her smoking habit after initially learning about her diagnosis with lung cancer...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29307688/pathogenic-roles-of-b-lymphocytes-in-systemic-sclerosis
#13
Ayumi Yoshizaki
Systemic sclerosis (SSc) is a collagen disease characterized by autoimmunity and excessive extracellular matrix deposition in the skin and visceral organs. Although the pathogenic relationship between systemic autoimmunity and the clinical manifestations of SSc remains unknown, SSc patients show a variety of abnormal immune activation including the production of disease-specific autoantibodies and cytokine production. Many recent studies have demonstrated that immune cells, including T cells, B cells, and macrophages, have a variety of immunological abnormalities in SSc...
January 5, 2018: Immunology Letters
https://www.readbyqxmd.com/read/29301283/expression-and-activity-of-cox-1-and-cox-2-in-acanthamoeba-sp-infected-lungs-according-to-the-host-immunological-status
#14
Natalia Łanocha-Arendarczyk, Irena Baranowska-Bosiacka, Karolina Kot, Izabela Gutowska, Agnieszka Kolasa-Wołosiuk, Dariusz Chlubek, Danuta Kosik-Bogacka
Little is known about the pathomechanism of pulmonary infections caused by Acanthamoeba sp. Therefore, the aim of this study was to determine whether Acanthamoeba sp. may affect the expression and activity of cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2), resulting in the altered levels of their main products, prostaglandins (PGE₂) and thromboxane B₂ (TXB₂), in lungs of immunocompetent or immunosuppressed hosts. Acanthamoeba sp. induced a strong expression of COX-1 and COX-2 proteins in the lungs of immunocompetent mice, which, however, did not result in significant differences in the expression of PGE₂ and TXB₂...
January 2, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29300005/food-allergy
#15
REVIEW
Harald Renz, Katrina J Allen, Scott H Sicherer, Hugh A Sampson, Gideon Lack, Kirsten Beyer, Hans C Oettgen
Food allergies manifest in a variety of clinical conditions within the gastrointestinal tract, skin and lungs, with the most dramatic and sometimes fatal manifestation being anaphylactic shock. Major progress has been made in basic, translational and clinical research, leading to a better understanding of the underlying immunological mechanisms that lead to the breakdown of clinical and immunological tolerance against food antigens, which can result in either immunoglobulin E (IgE)-mediated reactions or non-IgE-mediated reactions...
January 4, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/29290265/correlation-between-immune-related-adverse-events-and-efficacy-in-non-small-cell-lung-cancer-treated-with-nivolumab
#16
Koichi Sato, Hiroaki Akamatsu, Eriko Murakami, Seigo Sasaki, Kuninobu Kanai, Atsushi Hayata, Nahomi Tokudome, Keiichiro Akamatsu, Yasuhiro Koh, Hiroki Ueda, Masanori Nakanishi, Nobuyuki Yamamoto
OBJECTIVES: Patients treated with nivolumab often experience its unique adverse events, called immune-related adverse events (irAEs). Regarding the mechanisms of immune-checkpoint inhibitors (ICIs), the occurrence of irAEs may also reflect antitumor responses. Here, we report the clinical correlation between irAEs and efficacy in NSCLC patients treated with nivolumab. MATERIALS AND METHODS: Between December 2015 and February 2017, 38 advanced NSCLC patients were treated in our institution...
January 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29290264/the-predictive-value-of-the-interferon-%C3%AE-release-assay-for-chemotherapy-responses-in-patients-with-advanced-non-small-cell-lung-cancer
#17
Hsu-Ching Huang, Wei-Juin Su, Chi-Lu Chiang, Jia-Yih Feng, Hsin-Yi Huang, Ching-Hsiung Lin, Sheng-Hao Lin, Ching-Yuan Cheng, Chao-Hua Chiu
OBJECTIVES: IFN-γ takes part in immunologic responses to cancer and its interactions with chemotherapy have also been described. Our previous study had showed an association between phytohemagglutinin (PHA)-stimulated IFN-γ (PSIG) response and overall survival in patients with advanced non-small-cell lung cancer (NSCLC). Here, we aimed to evaluate the correlation between PSIG and chemotherapy responses. MATERIALS AND METHODS: From January 2011 to August 2012, 340 newly diagnosed patients with lung cancer were enrolled in a prospective latent tuberculosis observational study...
January 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29290023/immunological-hallmarks-of-cis-ddp-resistant-lewis-lung-carcinoma-cells
#18
Olexandr Fedorchuk, Yaroslav Susak, Mariia Rudyk, Nataliia Senchylo, Nataliia Khranovska, Oksana Skachkova, Larysa Skivka
PURPOSE: Tumor cell resistance to platinum-based chemotherapeutic agents is one of the major hurdles to successful cancer treatment with these drugs, and is associated with alterations in tumor cell immune evasion and immunomodulatory properties. Immunocyte targeting is considered as a relevant approach to fight drug-resistant cancer. In this study, immunological hallmarks of cis-DDP-resistant Lewis lung carcinoma cells (LLC/R9) were investigated. METHODS: Immunological features of LLC/R9 cells cultured in vitro in normoxic and hypoxic conditions as well as of those that were grown in vivo were examined...
December 30, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29284183/predicting-reactivity-threshold-in-children-with-anaphylaxis-to-peanut
#19
Tonje Reier-Nilsen, Merethe Melbye Michelsen, Karin C Lødrup Carlsen, Kai-Håkon Carlsen, Petter Mowinckel, Unni C Nygaard, Ellen Namork, Magnus P Borres, Geir Håland
BACKGROUND: Peanut allergy necessitates dietary restrictions, preferably individualised by determining reactivity threshold through an oral food challenge (OFC). However, risk of systemic reactions often precludes OFC in children with severe peanut allergy. OBJECTIVE: We aimed to determine if clinical and/or immunological characteristics were associated with reactivity threshold in children with anaphylaxis to peanut and secondarily, to investigate if these characteristics were associated with severity of the allergic reaction during OFC...
December 28, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29281850/cd70-encoded-by-modified-vaccinia-virus-ankara-enhances-cd8-t-cell-dependent-protective-immunity-in-mhc-class-ii-deficient-mice
#20
Barbara Bathke, Juliane Pätzold, Ronny Kassub, Raphael Giessel, Kerstin Lämmermann, Maria Hinterberger, Kay Brinkmann, Paul Chaplin, Mark Suter, Hubertus Hochrein, Henning Lauterbach
The immunological outcome of infections and vaccinations is largely determined during the initial first days in which antigen-presenting cells instruct T cells to expand and differentiate into effector and memory cells. Besides the essential stimulation of the T cell receptor complex a plethora of co-stimulatory signals not only ensures a proper T cell activation but also instils phenotypic and functional characteristics in the T cells appropriate to fight off the invading pathogen. The TNF receptor/ligand pair CD27/CD70 gained a lot of attraction due to its key role in regulating T cell activation, survival, differentiation, and maintenance, especially in the course of viral infections and cancer...
December 27, 2017: Immunology
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