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Immunophenotyping by flow cytometry

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https://www.readbyqxmd.com/read/29338788/high-throughput-immunophenotypic-characterization-of-bone-marrow-and-cord-blood-derived-mesenchymal-stromal-cells-reveals-common-and-differentially-expressed-markers-identification-of-angiotensin-converting-enzyme-cd143-as-a-marker-differentially-expressed
#1
Eliana Amati, Omar Perbellini, Gianluca Rotta, Martina Bernardi, Katia Chieregato, Sabrina Sella, Francesco Rodeghiero, Marco Ruggeri, Giuseppe Astori
BACKGROUND: Mesenchymal stromal cells (MSC) are a heterogeneous population of multipotent progenitors used in the clinic because of their immunomodulatory properties and their ability to differentiate into multiple mesodermal lineages. Although bone marrow (BM) remains the most common MSC source, cord blood (CB) can be collected noninvasively and without major ethical concerns. Comparative studies comprehensively characterizing the MSC phenotype across several tissue sources are still lacking...
January 16, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29338031/pre-existing-malignancy-results-in-increased-prevalence-of-distinct-populations-of-cd4-t-cells-during-sepsis
#2
Jianfeng Xie, Jennifer M Robertson, Ching-Wen Chen, Wenxiao Zhang, Craig M Coopersmith, Mandy L Ford
The presence of pre-existing malignancy in murine hosts results in increased immune dysregulation and risk of mortality following a septic insult. Based on the known systemic immunologic changes that occur in cancer hosts, we hypothesized that the presence of pre-existing malignancy would result in phenotypic and functional changes in CD4+ T cell responses following sepsis. In order to conduct a non-biased, unsupervised analysis of phenotypic differences between CD4+ T cell compartments, cohorts of mice were injected with LLC1 tumor cells and tumors were allowed to grow for 3 weeks...
2018: PloS One
https://www.readbyqxmd.com/read/29327714/a-comprehensive-flow-cytometry-based-immunophenotypic-characterization-of-burkitt-like-lymphoma-with-11q-aberration
#3
Grzegorz Rymkiewicz, Beata Grygalewicz, Magdalena Chechlinska, Katarzyna Blachnio, Zbigniew Bystydzienski, Joanna Romejko-Jarosinska, Renata Woroniecka, Michalina Zajdel, Katarzyna Domanska-Czyz, David Martin-Garcia, Ferran Nadeu, Pawel Swoboda, Jolanta Rygier, Barbara Pienkowska-Grela, Jan Konrad Siwicki, Monika Prochorec-Sobieszek, Itziar Salaverria, Reiner Siebert, Jan Walewski
We previously described a subset of MYC translocation-negative aggressive B-cell lymphomas resembling Burkitt lymphoma, characterized by proximal gains and distal losses in chromosome 11. In the 2016 WHO classification, these MYC-negative lymphomas were recognized as a new provisional entity, 'Burkitt-like lymphoma with 11q aberration'. Here we present an immunophenotype analysis of Burkitt-like lymphomas with 11q aberration. Cells were acquired by fine needle aspiration biopsy from 10 young adult patients, 80% of whom presented recurrence-free 5-year survival...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29316245/flow-cytometric-aberrancies-in-plasma-cell-myeloma-and-mgus-correlation-with-laboratory-parameters
#4
Sarika Gupta, Nitin J Karandikar, Timothy Ginader, Andrew M Bellizzi, Carol J Holman
BACKGROUND: Multiparametric flow cytometry (MFC) is a useful tool for diagnosis of plasma cell dyscrasias and assessment of minimal residual disease (MRD) in plasma cell myeloma (PCM). However, the immunophenotypic differences between the clonal plasma cells (PCs) of plasma cell myeloma (PCM) and those of monoclonal gammopathy of undetermined significance (MGUS) as well as the correlation of these flow cytometric markers with pertinent laboratory parameters have not been evaluated. METHODS: We retrospectively identified all newly diagnosed treatment-naive PCM and MGUS patients between 09/2014 and 06/2015 who underwent 10-color flow-cytometric evaluation: CD45, CD38, CD138, cKappa, cLambda, CD19, CD27, CD28, CD56, CD117...
January 6, 2018: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29305674/comparable-osteogenic-capacity-of-mesenchymal-stem-or-stromal-cells-derived-from-human-amnion-membrane-and-bone-marrow
#5
Mehran Ghasemzadeh, Ehteramolsadat Hosseini, Mohammadhossein Ahmadi, Maedeh Kamalizad, Naser Amirizadeh
So far, substantial attentions have been attracted to the application of mesenchymal stem or stromal cells (MSCs) in different therapeutic approaches. Although human bone marrow is commonly considered as a major source for MSCs, having an invasive collection method, ethical consideration and donor availability create a challenge for scientists, leading them to explore better alternative sources for MSCs. The study presented here aimed to characterize and compare osteogenic capacity of MSCs obtained from the amnion membrane (AM) with those originated from BM...
January 5, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29287915/high-throughput-automated-analysis-of-big-flow-cytometry-data
#6
Albina Rahim, Justin Meskas, Sibyl Drissler, Alice Yue, Anna Lorenc, Adam Laing, Namita Saran, Jacqui White, Lucie Abeler-Dörner, Adrian Hayday, Ryan R Brinkman
The rapid expansion of flow cytometry applications has outpaced the functionality of traditional manual analysis tools used to interpret flow cytometry data. Scientists are faced with the daunting prospect of manually identifying interesting cell populations in 50-dimensional datasets, equalling the complexity previously only reached in mass cytometry. Data can no longer be analyzed or interpreted fully by manual approaches. While automated gating has been the focus of intense efforts, there are many significant additional steps to the analytical pipeline (e...
December 26, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29286155/mesenchymal-stem-cells-reverse-high%C3%A2-fat-diet%C3%A2-induced-non%C3%A2-alcoholic-fatty-liver-disease-through-suppression-of-cd4-t-lymphocytes-in-mice
#7
Huafeng Wang, Huan Zhang, Biao Huang, Guolin Miao, Xiaoyan Yan, Gang Gao, Yongping Luo, Huize Chen, Wei Chen, Luhong Yang
Although the multipotency of mesenchymal stem cells (MSCs) makes them an attractive choice for clinical applications, immune modulation is an important factor affecting MSC transplantation. At present, the effect of treatment with MSCs on non‑alcoholic fatty liver disease (NAFLD) has received little attention. In the present study, a compact bone‑derived method was used to isolate mouse MSCs (mMSCs) and a high‑fat diet was used to establish a mouse model of NAFLD. Immunophenotypic features of mMSCs were analyzed using flow cytometry...
December 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29274873/the-use-of-unfixed-bone-marrow-trephines-for-multicolour-flow-cytometry
#8
REVIEW
R Morilla, K Moss, V Nikolova, K Marquardt, S Duke, K Adamowska, L Fuller, A Taifoor, N Johnson, A Zeisig, A Morilla, A Atra, D C Taussig
An adequate bone marrow aspirate is essential for a rapid diagnosis of acute leukaemia by multicolour flow cytometry enabling the simultaneous assessment of multiple antigens on the cell surface as well as intracellular or nuclear ones. In the context of acute leukaemia, it is important to have a diagnosis of the blasts lineage as soon as possible to decide the appropriate treatment. This is sometimes delayed due to difficulties in of obtaining a bone marrow aspirate due to a "dry tap". In this study we evaluated retrospectively cell markers results by flow cytometry of unfixed bone marrow trephines of 65 patients with leukaemia at diagnosis and including a few after treatment...
December 21, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29274134/a-distinct-immunophenotype-identifies-a-subset-of-npm1-mutated-aml-with-tet2-or-idh1-2-mutations-and-improved-outcome
#9
Emily F Mason, Frank C Kuo, Robert P Hasserjian, Adam C Seegmiller, Olga Pozdnyakova
Recent work has identified distinct molecular subgroups of acute myeloid leukemia (AML) with implications for disease classification and prognosis. NPM1 is one of the most common recurrently mutated genes in acute myeloid leukemia (AML). NPM1 mutations often co-occur with FLT3-ITDs and mutations in genes regulating DNA methylation, such as DNMT3A, TET2, and IDH1/2. It remains unclear whether these genetic alterations are associated with distinct immunophenotypic findings or affect prognosis. We identified 133 cases of NPM1-mutated AML and correlated sequencing data with immunophenotypic and clinical findings...
December 23, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29244249/flow-cytometric-false-myeloperoxidase-positive-childhood-b-lineage-acute-lymphoblastic-leukemia
#10
Süreyya Savaşan, Steven Buck, Manisha Gadgeel, Ali Gabali
BACKGROUND: Flow cytometric intracellular myeloperoxidase (MPO) staining of leukemic blasts is a useful tool in diagnosis of leukemia subtype. Interpretation of high MPO-positivity can be a diagnostic challenge in B-lineage acute lymphoblastic leukemia (B-ALL). While very few such cases have been reported, high MPO positive B-ALL cases without additional myeloid antigen positivity are suspect and require further investigation. METHODS: Three pediatric cases of B-ALL with strong MPO staining (clone 8E6; Invitrogen) at diagnosis and three others with negative MPO staining were studied by flow cytometry and immunohistochemistry...
December 15, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29220877/increased-circulating-plasma-cells-detected-by-flow-cytometry-predicts-poor-prognosis-in-patients-with-plasma-cell-myeloma
#11
Mi Hyun Bae, Chan-Jeoung Park, Bo Hyun Kim, Young-Uk Cho, Seongsoo Jang, Dong-Hyun Lee, Eul-Ju Seo, Dok Hyun Yoon, Jung-Hee Lee, Cheolwon Suh
BACKGROUND: Flow cytometry (FC) is a reliable tool for diagnosing and monitoring of plasma cell myeloma (PCM). Recent studies used FC for quantifying plasma cells (PCs) in peripheral blood (PB) using various panels, and an adverse prognostic effect of circulating PCs (cPCs) has been reported. We investigated the prognostic implication of cPCs quantified using a simple panel in patients with PCM. METHODS: Bone marrow (BM) and PB of 85 patients with PCM were analyzed by five-color FC at time of diagnosis...
December 8, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29220555/multiparameter-cytometric-analysis-of-complex-cellular-response
#12
Šárka Šimečková, Radek Fedr, Ján Remšík, Zuzana Kahounová, Eva Slabáková, Karel Souček
Complex analysis of cellular responses after experimental treatment is important for screening, mechanistic understanding of treatment effects, and the identification of sensitive and resistant cell phenotypes. Modern multicolor flow cytometry has demonstrated its power for such analyses. Here, we introduce a multiparametric protocol for complex analysis of cytokinetics by the simultaneous detection of seven fluorescence parameters. This analysis includes the detection of two surface markers for immunophenotyping, analysis of proliferation based on the cell cycle and the measurement of incorporated nucleoside analogue 5-ethynyl-2'-deoxyuridine (EdU) in newly synthesized DNA, analysis of DNA damage using an anti-phospho-histone H2A...
December 8, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/29218734/prognostic-value-of-multicenter-flow-cytometry-harmonized-assessment-of-minimal-residual-disease-in-acute-myeloblastic-leukemia
#13
Francis Lacombe, Lydia Campos, Kaoutar Allou, Christine Arnoulet, Adrienne Delabarthe, Florent Dumezy, Jean Feuillard, Franck Geneviève, Estelle Guérin, Julien Guy, Hélène Jouault, Pascale Lepelley, Marc Maynadié, Françoise Solly, Orianne Wagner Ballon, Claude Preudhomme, André Baruchel, Hervé Dombret, Norbert Ifrah, Marie C Béné
The assessment of minimal residual disease (MRD) in acute myeloblastic leukemia is of growing interest as a prognostic marker of patients' outcome. Multiparameter flow cytometry (MFC), tracking leukemia-associated immunophenotypic patterns, has been shown in several studies to be a useful tool to investigate MRD. Here, we report a multicenter prospective study which allowed to define a harmonized analysis strategy, as well as the efficacy of MFC MRD to predict outcome. This study included 276 patients, in 10 different MFC centers, of whom 268 had at least 1 MRD check point...
December 7, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/29217426/composite-lymphoma-of-follicular-b-cell-and-peripheral-t-cell-types-with-distinct-zone-distribution-in-a-75-year-old-male-patient-a-case-study
#14
John Tanaka, Pu Su, Catherine Luedke, Rachel Jug, Lian-He Yang, Kristen Deak, Sarah Horn, Yang Zhang, Marc Delos Angeles, Yi Xie, Endi Wang
Composite lymphoma (CL) of T-/B-cell type is rare, and follicular lymphoma composite with peripheral T-cell lymphoma (PTCL) has not previously been reported. We report such a case with both neoplastic components displaying a unique zone of distribution. A 75-year-old male patient presented with generalized lymphadenopathy. Sections of axillary lymph node demonstrated potentially two clonal processes, PTCL with aberrant CD20 expression and follicular lymphoma. Interestingly, the two neoplastic components were confined to their respective classic distribution zones, with PTCL occupying the interfollicular areas and follicular lymphoma residing in follicles...
December 4, 2017: Human Pathology
https://www.readbyqxmd.com/read/29211912/intestinal-t-cell-profiling-in-inflammatory-bowel-disease-linking-t-cell-subsets-to-disease-activity-and-disease-course
#15
Carolijn Smids, Carmen S Horjus Talabur Horje, Julia Drylewicz, Britt Roosenboom, Marcel J M Groenen, Elly van Koolwijk, Ellen G van Lochem, Peter J Wahab
Introduction: A dysregulated intestinal T-cell response is presumed in patients with Inflammatory Bowel Disease (IBD). In this longitudinal study, we investigated the changes in intestinal T lymphocyte subsets in IBD at first presentation and over time during endoscopic active or inactive disease and relate them to disease activity and outcome. Material & method: We included 129 newly diagnosed patients (87 Crohn´s Disease (CD), 42 ulcerative colitis (UC)) and 19 healthy controls (HC)...
December 4, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29206098/monoclonal-b-cell-lymphocytosis-not-the-same-as-b-cell-chronic-lymphocytic-leukaemia
#16
Maya Svenningsen, Laura L Herborg, Peter Hokland, Maja Ludvigsen
INTRODUCTION: Depending on the location and the extent of disease, mature B-cell disorders can be divided into 
benign monoclonal B-cell lymphocytosis (MBL), chronic 
lymphocytic leukaemia (CLL) and small lymphocytic lymphoma (SLL). Whereas SLL is characterised by its location outside the blood stream, MBL is distinguished from CLL by a monoclonal B-cell count below 5 × 109/l. Due to its low tendency to transform into CLL, correct diagnosis of MBL is essential. We hypothesised that this might not always be the case...
December 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/29205788/normal-variation-of-bone-marrow-b-cell-precursors-according-to-age-reference-ranges-for-studies-in-myelodysplastic-syndromes-in-brazil
#17
I Lorand-Metze, A L Longhini, G Oliveira-Duarte, R P Correia, M C Santos-Silva, M Yamamoto, A F Sandes, A F Oliveira, E X Souto, Mrv Ikoma, F G Pereira-Cunha, M Beltrame, Konradin Metze
BACKGROUND: Normal B lymphoid maturation occurs in bone marrow (BM) throughout life, but immature B-cell progenitors (BCPs) are more numerous in children than in adults. To assess the normal values according to age became important as BCPs are decreased in myelodysplastic syndromes and have been considered an important diagnostic and prognostic feature in these clonal disorders. METHODS: in a multicenter retrospective study from the Brazilian Group of Flow Cytometry we analyzed the variation of BCPs in normal BM according to age and technical peculiarities of each laboratory...
December 2, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29205089/altered-bioenergetic-profile-in-umbilical-cord-and-amniotic-mesenchymal-stem-cells-from-newborns-of-obese-women
#18
Laura Iaffaldano, Carmela Nardelli, Francesca D'Alessio, Valeria D'Argenio, Marcella Nunziato, Lucia Mauriello, Claudio Procaccini, Giuseppe Maria Maruotti, Pasquale Martinelli, Giuseppe Matarese, Lucio Pastore, Luigi Del Vecchio, Giuseppe Labruna, Lucia Sacchetti
Nutritional imbalance and metabolic alterations associated with maternal obesity during pregnancy predispose offspring to obesity and/or to type 2 diabetes, but the mechanisms underlying these effects are still obscure. In this context, we evaluated whether the two main energy-producing pathways (glycolysis and mitochondrial oxidative phosphorylation) are impaired in obesity during pregnancy thus contributing to metabolic intrauterine alterations. Specifically, we studied metabolic abnormalities in the intrauterine life of newborns using stem cells isolated from amnion and umbilical cord (hA- and hUC-MSCs)...
January 3, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29190813/flow-cytometric-discrimination-of-seven-lineage-markers-by-using-two-fluorochromes
#19
Francesco Boin, Maria Letizia Giardino Torchia, Ivan Borrello, Kimberly A Noonan, Matthew Neil, Mark J Soloski, Raffaello Cimbro
Flow cytometry is the primary immunological technique used to analyze multiple parameters on complex cell populations. We present a staining method that identifies major human mononuclear lymphoid and myeloid populations (CD4+ and CD8+ T cells, γδ T cells, B cells, NK cells and monocytes), using only two fluorochromes and a minimal number of cells. Our approach increases the number of markers recordable on most flow cytometers allowing for a deeper and more comprehensive immunophenotyping.
2017: PloS One
https://www.readbyqxmd.com/read/29188193/the-use-of-flow-cytometry-in-myelodysplastic-syndromes-a-review
#20
REVIEW
Laiz Cameirão Bento, Rodolfo Patussi Correia, Cristóvão Luis Pitangueiras Mangueira, Rodrigo De Souza Barroso, Fernanda Agostini Rocha, Nydia Strachman Bacal, Luciana Cavalheiro Marti
Myelodysplastic syndromes (MDSs) are a heterogeneous group of hematopoietic stem cell diseases categorized by dysplasia in one or more hematopoietic cell lineages, as well as cytopenia and functional abnormalities in bone marrow cells. Several MDS classification methods have been proposed to categorize the disease and help professionals better plan in patients' treatment. The World Health Organization classification, released in 2008 and revised in 2016, is the currently and the most used classification method worldwide...
2017: Frontiers in Oncology
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