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https://www.readbyqxmd.com/read/28431200/the-utility-of-flow-cytometry-in-differentiating-nk-t-cell-lymphoma-from-indolent-and-reactive-nk-cell-proliferations
#1
Sanjay de Mel, Jenny Bei Li, Muhammad Bilal Abid, Tiffany P L Tang, Hui Ming Tay, Wen Chang Ting, Li Mei Poon, Tae Hoon Chung, Benjamin Mow, Allison Tso, Kiat Hoe Ong, Wee Joo Chng, Te Chih Liu
BACKGROUND: The WHO defines 3 categories of NK cell malignancies; extra nodal NK/T cell lymphoma (NKTCL), aggressive NK cell leukaemia, and the provisional entity chronic lymphoproliferative disorder of NK cells (CLPD-NK). Although the flow cytometric (FC) phenotype of CLPD-NK has been described, studies on FC phenotype of NKTCL are limited. To the best of our knowledge ours is the first study to compare the phenotype of NKTCL, CLPD-NK, reactive NK lymphocytosis (RNKL), and normal NK cells using eight colour (8C) FC...
April 21, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28424283/simian-immunodeficiency-virus-targeting-of-cxcr3-cd4-t-cells-in-secondary-lymphoid-organs-is-associated-with-robust-cxcl10-expression-in-monocyte-macrophage-subsets
#2
Masayuki Fujino, Hirotaka Sato, Tomotaka Okamura, Akihiko Uda, Satoshi Takeda, Nursarat Ahmed, Shigeyuki Shichino, Teiichiro Shiino, Yohei Saito, Satoru Watanabe, Chie Sugimoto, Marcelo Kuroda, Manabu Ato, Yoshiyuki Nagai, Shuji Izumo, Kouji Matsushima, Masaaki Miyazawa, Aftab A Ansari, Francois Villinger, Kazuyasu Mori
Glycosylation of Env defines pathogenic properties of SIV. We previously demonstrated that pathogenic SIVmac239 and live-attenuated, quintuple deglycosylated Env mutant (Δ5G) target CD4(+) T cells residing in different tissues during acute infection. SIVmac239 and Δ5G preferentially infected distinct CD4(+) T cells in secondary lymphoid organs (SLOs) and within the lamina propria of the small intestine, respectively (C. Sugimoto et al., J Virol 86:9323-9336, 2012). Herein, we studied the host responses relevant to SIV targeting of CXCR3(+)CCR5(+) CD4(+) T cells in SLOs...
April 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28415754/gene-modified-nk-92mi-cells-expressing-a-chimeric-cd16-bb-%C3%AE-or-cd64-bb-%C3%AE-receptor-exhibit-enhanced-cancer-killing-ability-in-combination-with-therapeutic-antibody
#3
Ying Chen, Fengtao You, Licui Jiang, Jialu Li, Xuejun Zhu, Yangyi Bao, Xiang Sun, Xiaowen Tang, Huimin Meng, Gangli An, Bozhen Zhang, Lin Yang
Natural killer (NK) cells play a pivotal role in monoclonal antibody-mediated immunotherapy through the antibody-dependent cell-mediated cytotoxicity (ADCC) mechanism. NK-92MI is an interleukin-2 (IL-2)-independent cell line, which was derived from NK-92 cells with superior cytotoxicity toward a wide range of tumor cells in vitro and in vivo. Nonetheless, the Fc-receptor (CD16) that usually mediates ADCC is absent in NK-92 and NK-92MI cells. To apply NK-92MI cell-based immunotherapy to cancer treatment, we designed and generated two chimeric receptors in NK-92MI cells that can bind the Fc portion of human immunoglobulins...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414590/reduction-in-cd16-cd56-and-cd16-cd3-cd56-natural-killer-cells-in-coronary-artery-disease
#4
Nasimudeen R Jabir, Chelapram K Firoz, Farid Ahmed, Mohammad A Kamal, Salwa Hindawi, Ghazi A Damanhouri, Hussein A Almehdar, Shams Tabrez
BACKGROUND: Natural killer (NK) cells are the potential modulators of inflammatory reactions that exert several unique biological effects and could lead to future adverse events of coronary artery disease (CAD). HYPOTHESIS: The purpose of this study was to find out the possible association of modulation in NK cell, TNK cells, T cells, B cells, and tumor necrosis factor alpha (TNF-α) in CAD patients and various forms of myocardial infarction. METHODS: The present study included total 190 subjects (98 confirmed CAD patients both men and women and 92 healthy control individuals)...
April 17, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28413901/elevation-of-cd16-cd56-nk-cells-and-down-regulation-of-serum-interleukin-21-il-21-and-il-1%C3%AE-after-splenectomy-in-relapsed-hemophagocytic-lymphohistiocytosis-of-unknown-cause
#5
Jingshi Wang, Wei Han, Zhuo Gao, Yini Wang, Lin Wu, Jia Zhang, Wenyuan Lai, Zhao Wang
OBJECTIVES: Encouraging progress has been made in application of splenectomy in the treatment of relapsed hemophagocytic lymphohistiocytosis (HLH) of unknown cause. The aim was to determine the roles of lymphocyte subpopulations and inflammatory cytokines in splenectomy. METHODS: We retrospectively analyzed changes in lymphocyte subpopulations and levels of inflammatory cytokines at different time-points before and after splenectomy in the patients with relapsed HLH of unknown cause, as well as the correlations between these changes and the disease prognosis...
April 15, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28408238/novel-roles-for-podocalyxin-in-regulating-stress-myelopoiesis-rap1a-and-neutrophil-migration
#6
Pan Li, Aldona A Karaczyn, Rose McGlauflin, Amanda Favreau, Edward Jachimowicz, Calvin Vary, Kailin Xu, Don M Wojchowski, Pradeep Sathyanarayana
Podocalyxin (Podxl) is a CD34 orthologue and cell surface sialomucin with reported roles in renal podocyte diaphragm slit development, vascular cell integrity, and the progression of blood, breast, and prostate cancers. Roles for Podxl during non-malignant hematopoiesis, however, are largely undefined. Presently we have developed a Vav-Cre Podxl knockout mouse model, and report on novel roles for Podxl in governing stress myelopoiesis. At steady-state, Podxl expression among hematopoietic progenitor cells was low-level but was induced by GCSF (granulocyte colony stimulating factor) in myeloid progenitors, and by TPO (thrombopoietin) in HSCs...
April 10, 2017: Experimental Hematology
https://www.readbyqxmd.com/read/28405525/obinutuzumab-mediated-high-affinity-ligation-of-fc%C3%AE-riiia-cd16-primes-nk-cells-for-ifn%C3%AE-production
#7
Cristina Capuano, Chiara Pighi, Rosa Molfetta, Rossella Paolini, Simone Battella, Gabriella Palmieri, Giuseppe Giannini, Francesca Belardinilli, Angela Santoni, Ricciarda Galandrini
Natural killer (NK) cell-mediated antibody-dependent cellular cytotoxicity (ADCC), based on the recognition of IgG-opsonized targets by the low-affinity receptor for IgG FcγRIIIA/CD16, represents one of the main mechanisms by which therapeutic antibodies (mAbs) mediate their antitumor effects. Besides ADCC, CD16 ligation also results in cytokine production, in particular, NK-derived IFNγ is endowed with a well-recognized role in the shaping of adaptive immune responses. Obinutuzumab is a glycoengineered anti-CD20 mAb with a modified crystallizable fragment (Fc) domain designed to increase the affinity for CD16 and consequently the killing of mAb-opsonized targets...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28404886/cytokine-induced-killer-cells-dendritic-cells-cytokine-induced-killer-cells-immunotherapy-combined-with-chemotherapy-for-treatment-of-colorectal-cancer-in-china-a-meta-analysis-of-29-trials-involving-2-610-patients
#8
Lei Zhang, Ying Mu, Anqi Zhang, Jiaping Xie, Shuangfeng Chen, Fang Xu, Weihua Wang, Yingxin Zhang, Shaoda Ren, Changhui Zhou
PURPOSE: To systematically evaluate the efficacy and safety of Cytokine-induced killer cells/dendritic cells-cytokine induced killer cells (CIK/DC-CIK) immunotherapy in treating advanced colorectal cancer (CRC) patients. RESULTS: 29 trials including 2,610 CRC patients were evolved. Compared with chemotherapy alone, the combination of chemotherapy with CIK/DC-CIK immunotherapy significantly prolonged the overall survival rate (OS) and disease-free survival rate (DFS) (1-5 year OS, P < 0...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28404817/hypoxia-inducible-factor-1%C3%AE-predicts-recurrence-in-high-grade-soft-tissue-sarcoma-of-extremities-and-trunk-wall
#9
H Nyström, M Jönsson, L Werner-Hartman, M Nilbert, A Carneiro
BACKGROUND AND AIM: Sarcomas are of mesenchymal origin and typically show abundant tumour stroma and presence of necrosis. In search for novel biomarkers for personalised therapy, we determined the prognostic impact of stromal markers, hypoxia and neovascularity in high-grade soft tissue leiomyosarcoma and pleomorphic undifferentiated sarcoma. METHOD: We evaluated CD163, colony-stimulating factor (CSF)-1, CD16 and hypoxia-inducible factor 1 (HIF-1)α using immunohistochemical staining and assessed microvessel density using CD31 in 73 high-grade leiomyosarcomas and undifferentiated pleomorphic sarcomas of the extremities and the trunk wall...
April 12, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28404628/simultaneous-detection-of-decidual-th1-th2-and-nk1-nk2-immunophenotyping-in-unknown-recurrent-miscarriage-using-8-color-flow-cytometry-with-fsc-vt-extended-strategy
#10
Peng Dong, Xi Wen, Jia Liu, Cui-Yan Yan, Jing Yuan, Lan-Rong Luo, Qiao-Fei Hu, Jian Li
Th1/Th2 imbalance is considered as a mechanism of recurrent miscarriage. The NK1/NK2 paradigm is hypothesized to play an important role in pregnancy. However, few results showed simultaneous changes of these subsets in vivo in decidual tissues. This study aimed to detect the decidual mononuclear cells and the Th1/Th2 and NK1/NK2 paradigm simultaneously using multiparametric flow cytometry (MFC) in unexplained recurrent miscarriages (URM). Mononuclear cells were isolated from the decidual tissues of URM cases and early pregnant women...
April 12, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28400540/cd56-bright-nk-il-7r%C3%AE-expression-negatively-associates-with-hcv-level-and-il-7-induced-nk-function-is-impaired-during-hcv-and-hiv-infections
#11
Chelsey J Judge, Lenche Kostadinova, Kenneth E Sherman, Adeel A Butt, Yngve Falck-Ytter, Nicholas T Funderburg, Alan L Landay, Michael M Lederman, Scott F Sieg, Johan K Sandberg, Donald D Anthony
Several lines of evidence support the concept that NK cells play an important role in control of hepatitis C virus (HCV) infection via cytokine secretion and cytotoxicity. IL-7 is a homeostatic cytokine with a role in T cell development, activation, proliferation, and cytokine secretion. The IL-7Rα chain [cluster of differentiation (CD)127] is expressed on NK cells, with greatest abundance on the CD56(bright)CD16(dim/-) (CD56(bright)) subset. Here, we measured CD127 expression on CD56(bright), CD56(dim)CD16(+) (CD56(dim)), or CD56(neg)CD16(+) (CD56(neg)) NK cell subsets of 25 uninfected donors (UD); 34 chronic HCV-infected, treatment-naïve; 25 HIV-infected, virally suppressed on antiretroviral therapy (ART); and 42 HCV-HIV-coinfected subjects on ART...
April 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28400539/mass-cytometry-deep-phenotyping-of-human-mononuclear-phagocytes-and-myeloid-derived-suppressor-cells-from-human-blood-and-bone-marrow
#12
Mikael Roussel, P Brent Ferrell, Allison R Greenplate, Faustine Lhomme, Simon Le Gallou, Kirsten E Diggins, Douglas B Johnson, Jonathan M Irish
The monocyte phagocyte system (MPS) includes numerous monocyte, macrophage, and dendritic cell (DC) populations that are heterogeneous, both phenotypically and functionally. In this study, we sought to characterize those diverse MPS phenotypes with mass cytometry (CyTOF). To identify a deep phenotype of monocytes, macrophages, and DCs, a panel was designed to measure 38 identity, activation, and polarization markers, including CD14, CD16, HLA-DR, CD163, CD206, CD33, CD36, CD32, CD64, CD13, CD11b, CD11c, CD86, and CD274...
April 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28396660/macrophage-polarization-modulates-fc%C3%AE-r-and-cd13-mediated-phagocytosis-and-reactive-oxygen-species-production-independently-of-receptor-membrane-expression
#13
Elizabeth Mendoza-Coronel, Enrique Ortega
In response to microenvironmental cues, macrophages undergo a profound phenotypic transformation acquiring distinct activation phenotypes ranging from pro-inflammatory (M1) to anti-inflammatory (M2). To study how activation phenotype influences phagocytosis and production of reactive oxygen species (ROS) mediated by receptors for IgG antibodies (Fcγ receptors) and by CD13, human monocyte-derived macrophages were polarized to distinct phenotypes using IFN-γ (Mϕ-IFN-γ), IL-4 (Mϕ-IL-4), or IL-10 (Mϕ-IL-10)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28394364/human-adipose-tissue-accumulation-is-associated-with-pro-inflammatory-changes-in-subcutaneous-rather-than-visceral-adipose-tissue
#14
I Kralova Lesna, S Cejkova, A Kralova, J Fronek, M Petras, A Sekerkova, F Thieme, L Janousek, R Poledne
The importance of the involvement of adipose tissue macrophage subpopulations in obesity-related disorders is well known from different animal models, but human data are scarcer. Subcutaneous (n=44) and visceral (n=52) adipose tissues of healthy living kidney donors were obtained during living donor nephrectomy. Stromal vascular fractions were isolated and analysed by flow cytometry using CD14, CD16, CD36 and CD163 antibodies. Total macrophage numbers in subcutaneous adipose tissue increased (P=0.02) with body mass index (BMI), with a similar increase seen in the proportion of phagocytic CD14+CD16+CD36(high) macrophages (P<0...
April 10, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28392789/cd16-monocytes-and-skewed-macrophage-polarization-toward-m2-type-hallmark-heart-transplant-acute-cellular-rejection
#15
Thierry P P van den Bosch, Kadir Caliskan, Marina D Kraaij, Alina A Constantinescu, Olivier C Manintveld, Pieter J M Leenen, Jan H von der Thüsen, Marian C Clahsen-van Groningen, Carla C Baan, Ajda T Rowshani
BACKGROUND: During acute heart transplant rejection, infiltration of lymphocytes and monocytes is followed by endothelial injury and eventually myocardial fibrosis. To date, no information is available on monocyte-macrophage-related cellular shifts and their polarization status during rejection. Here, we aimed to define and correlate monocyte-macrophage endomyocardial tissue profiles obtained at rejection and time points prior to rejection, with corresponding serial blood samples in 25 heart transplant recipients experiencing acute cellular rejection...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28389319/in-vitro-immunoregulatory-effects-of-thymoglobulin-on-human-immune-cell-subpopulations
#16
Maja Buszko, Bojana Jakic, Christian Ploner, Paul Hoertnagl, Christina Mayerl, Georg Wick, Giuseppe Cappellano
Thymoglobulin (ATG) is a polyclonal rabbit antibody against human thymocytes used as a T cell-depleting agent in organ transplantation. Its polyclonal character suggests that its effect may go far beyond just T cell depletion. The aim of this study was to further elucidate possible mechanisms underlying the suppressive activity of ATG. For in vitro studies, human peripheral blood mononuclear cells (PBMC) were incubated with ATG or control Ig for various time points. Foxp3(+) regulatory cells (Tregs) and monocytes were phenotypically analyzed by flow cytometry and functionally tested by in vitro suppression assays...
April 4, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28388469/higher-prevalence-of-colonization-with-gardnerella-vaginalis-and-gram-negative-anaerobes-in-patients-with-recurrent-miscarriage-and-elevated-peripheral-natural-killer-cells
#17
R J Kuon, R Togawa, K Vomstein, M Weber, T Goeggl, T Strowitzki, U R Markert, S Zimmermann, V Daniel, A H Dalpke, B Toth
The role of vaginal infections in recurrent miscarriage (RM) is discussed controversially and screening is not recommended in international guidelines. Peripheral and uterine NK cells (pNK, uNK) play an important role in the establishment of a healthy pregnancy and are targets of immune diagnostics in RM patients. The aim of this study was to analyze the composition of the vaginal microbiota in RM patients and to correlate the findings to clinical characteristics as well as NK cell parameters. In total, n=243 RM patients with ≥3 consecutive miscarriages were recruited between 11/2011 and 03/2016...
March 30, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28388249/natural-killer-cell-subsets-and-their-functional-activity-in-beh%C3%A3-et-s-disease
#18
Fulya Cosan, Esin Aktas Cetin, Nilgun Akdeniz, Zeliha Emrence, Ayse Cefle, Gunnur Deniz
BACKGROUND: Behçet's disease (BD) is a rare, chronic autoinflammatory disorder of unknown origin. Natural killer (NK) cells are one of the major immunoregulatory cell groups of the innate immune system, but their role in BD pathogenesis is not well documented. OBJECTIVES: We aimed to investigate the role of NK cell subsets and their cytokine secretion and cytotoxic activity in patients with BD. PATIENTS AND METHODS: The study group consisted of BD patients who had only mucocutaneous involvement, and they were compared with healthy subjects...
April 7, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28387358/corrigendum-cd16-is-indispensable-for-antibody-dependent-cellular-cytotoxicity-by-human-monocytes
#19
Wei Hseun Yeap, Kok Loon Wong, Noriko Shimasaki, Esmeralda Chi Yuan Teo, Jeffrey Kim Siang Quek, Hao Xiang Yong, Colin Phipps Diong, Antonio Bertoletti, Yeh Ching Linn, Siew Cheng Wong
No abstract text is available yet for this article.
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28386350/change-in-gut-microbiota-is-correlated-with-alterations-in-the-surface-molecule-expression-of-monocytes-after-roux-en-y-gastric-bypass-surgery-in-obese-type-2-diabetic-patients
#20
Hui Chen, Lei Qian, Qiangsheng Lv, Jianxiu Yu, Wei Wu, Haixin Qian
Objectives: Persistent low-grade chronic inflammation is common in type 2 diabetes (T2D) and obesity. To date, the underlying molecular mechanism is not well understood. In this study, we aimed to investigate gut microbiota and the expression of monocyte surface molecules in obese T2D subjects who underwent Roux-en-Y gastric bypass (RYGB) surgery. Methods: Twenty-four T2D patients were enrolled. Gut microbiota was assessed by measuring bacterial DNA. The phenotypes and biological functions of monocytes, and the expression of monocyte surface molecules were examined by flow cytometry...
2017: American Journal of Translational Research
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