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https://www.readbyqxmd.com/read/28535636/-characteristics-of-distribution-and-quantity-of-dendritic-cells-subtypes-in-hyperplastic-thymus-in-patients-with-myasthenia-gravis
#1
H Huang, P Chen, C Y Ou, L Qiu, Z Z Lin, Z D Huang, W B Liu
Objective: To investigate the characteristics of the distribution and amount of different subtypes of dendritic cell (DC) in myasthenia gravis(MG). Methods: We collected the thymic specimens from 32 patients who received thymoctomy because of cardiac surgery from January 2016 to December 2016 and selected 14 of them as normal control. Meantime, 61 MG patients who combined with thymic hyperplasia and received extended thymectomy were collected and selected 8 of them as experiment group.Immunohistochemical methods were used to label the two subtype DCs: plasmacytoid dendritic cell (pDC) and classical/conventional dendritic cell (cDC), to observe the distribution of these two DC subtypes in thymus and also quantify them in different thymus structures by image analysis software...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28502306/-detection-and-analysis-of-immune-molecules-in-leukemia-cell-surfaces-of-acute-promyelocytic-leukemia
#2
Ting Dong, Yaxian Jiang, Zhengfa Li, Hongmei Ouyang, Qin Zhang
Objective To investigate the immunophenotypic characteristics of acute promyelocytic leukemia (APL) and its clinical significance. Methods Immunophenotyping was performed by four-color flow cytometry with CD45/SSC-lin gating for neoplastic cells and was divided into five levels according to the intensity of antigen expression. Results The expression intensity and percentage of typical APL phenotypes were: myeloperoxidase (MPO) and CD33 were consistently expressed (100%); CD38 (82.35%), CD13 (64.71%), CD64 (50%), CD123 (47...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28487694/human-bronchial-epithelial-cells-induce-cd141-cd123-dc-sign-flt3-monocytes-that-promote-allogeneic-th17-differentiation
#3
Amiq Gazdhar, Fabian Blank, Valerie Cesson, Alban Lovis, John David Aubert, Romain Lazor, Francois Spertini, Anne Wilson, Katrin Hostettler, Laurent P Nicod, Carolina Obregon
Little is known about monocyte differentiation in the lung mucosal environment and about how the epithelium shapes monocyte function. We studied the role of the soluble component of bronchial epithelial cells (BECs) obtained under basal culture conditions in innate and adaptive monocyte responses. Monocytes cultured in bronchial epithelial cell-conditioned media (BEC-CM) specifically upregulate CD141, CD123, and DC-SIGN surface levels and FLT3 expression, as well as the release of IL-1β, IL-6, and IL-10. BEC-conditioned monocytes stimulate naive T cells to produce IL-17 through IL-1β mechanism and also trigger IL-10 production by memory T cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28479045/balance-of-anti-cd123-chimeric-antigen-receptor-binding-affinity-and-density-for-the-targeting-of-acute-myeloid-leukemia
#4
Silvia Arcangeli, Maria Caterina Rotiroti, Marco Bardelli, Luca Simonelli, Chiara Francesca Magnani, Andrea Biondi, Ettore Biagi, Sarah Tettamanti, Luca Varani
Chimeric antigen receptor (CAR)-redirected T lymphocytes are a promising immunotherapeutic approach and object of pre-clinical evaluation for the treatment of acute myeloid leukemia (AML). We developed a CAR against CD123, overexpressed on AML blasts and leukemic stem cells. However, potential recognition of low CD123-positive healthy tissues, through the on-target, off-tumor effect, limits safe clinical employment of CAR-redirected T cells. Therefore, we evaluated the effect of context-dependent variables capable of modulating CAR T cell functional profiles, such as CAR binding affinity, CAR expression, and target antigen density...
May 3, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28476490/phase-i-ii-study-of-intravenous-plerixafor-added-to-a-mobilization-regimen-of-g-csf-in-lymphoma-patients-undergoing-autologous-stem-cell-collection
#5
Amanda Cashen, Michael Rettig, Feng Gao, Angela Smith, Camille Abboud, Keith Stockerl-Goldstein, Ravi Vij, Geoffrey Uy, Peter Westervelt, John DiPersio
Plerixafor, given subcutaneously with G-CSF, improves autologous stem cell collection in patients with lymphoma and multiple myeloma. Intravenous (IV) administration of plerixafor allows administration of plerixafor the same day as pheresis, and it may improve stem cell collection. The primary objectives of this Phase I/II study were to determine the maximum tolerated dose of IV plerixafor, and the efficacy of IV plerixafor + G-CSF to mobilize ≥ 2 x 10(6) CD34+ cells/kg from patients with lymphoma. In Phase I, 25 patients were treated with G-CSF + IV plerixafor at escalating doses; in Phase II, 36 patients were treated with G-CSF + plerixafor 0...
May 2, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28473638/mapping-the-human-dc-lineage-through-the-integration-of-high-dimensional-techniques
#6
Peter See, Charles-Antoine Dutertre, Jinmiao Chen, Patrick Günther, Naomi McGovern, Sergio Erdal Irac, Merry Gunawan, Marc Beyer, Kristian Händler, Kaibo Duan, Hermi Rizal Bin Sumatoh, Nicolas Ruffin, Mabel Jouve, Ester Gea-Mallorquí, Raoul C M Hennekam, Tony Lim, Chan Chung Yip, Ming Wen, Benoit Malleret, Ivy Low, Nurhidaya Binte Shadan, Charlene Foong Shu Fen, Alicia Tay, Josephine Lum, Francesca Zolezzi, Anis Larbi, Michael Poidinger, Jerry K Y Chan, Qingfeng Chen, Laurent Renia, Muzlifah Haniffa, Philippe Benaroch, Andreas Schlitzer, Joachim L Schultze, Evan W Newell, Florent Ginhoux
Dendritic cells (DC) are professional antigen-presenting cells that orchestrate immune responses. The human DC population comprises two main functionally specialized lineages, whose origins and differentiation pathways remain incompletely defined. Here, we combine two high-dimensional technologies-single-cell mRNA sequencing and cytometry by time-of-flight (CyTOF), to identify human blood CD123(+)CD33(+)CD45RA(+) DC precursors (pre-DC). Pre-DC share surface markers with plasmacytoid DC (pDC) but have distinct functional properties that were previously attributed to pDC...
May 4, 2017: Science
https://www.readbyqxmd.com/read/28447034/the-biomarkers-of-leukemia-stem-cells-in-acute-myeloid-leukemia
#7
REVIEW
Yahui Ding, Huier Gao, Quan Zhang
Acute myeloid leukemia (AML) is a heterogeneous disease characterized by morphology and chromosome aberrations with high mortality. Leukemia stem cells (LSCs) in AML played important roles in leukemia initiation, progression, and were considered to be the root of chemotherapeutic drug resistance and disease relapse. The identification and targeting LSCs depended on membrane markers like CD34, CD38, CD123, TIM3, CD25, CD32 and CD96. In addition, the transcription factors were also therapeutic targets in eradicating LSCs, such as histone deacetylases (HDACs), NF-κB, HIF-1α and β-catenin...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28419186/cd4-negative-variant-of-cutaneous-blastic-plasmacytoid-dendritic-cell-neoplasm-with-a-novel-pbrm1-mutation-in-an-11-year-old-girl
#8
Nuri Yigit, Luisa Fernanda Suarez, Lisa Giulino Roth, Attilio Orazi, Wayne Tam
Objectives: We report a rare case of CD4- cutaneous blastic plasmacytoid dendritic cell neoplasm (BPDCN) with a novel PBRM1 mutation. Methods: An 11-year-old girl presented with an enlarged mass on her left arm and underwent an incisional biopsy. Results: Histopathologic examination and immunohistochemistry studies showed a monotonous proliferation of blasts that were CD4-, CD56+, and CD123+. There was no evidence of leukemic dissemination...
April 15, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28409040/a-case-of-blastic-plasmacytoid-dendritic-cell-neoplasm-extensively-studied-by-flow-cytometry-and-immunohistochemistry
#9
Martina Pennisi, Clara Cesana, Micol Giulia Cittone, Laura Bandiera, Barbara Scarpati, Valentina Mancini, Silvia Soriani, Silvio Veronese, Mauro Truini, Silvano Rossini, Roberto Cairoli
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy with aggressive clinical course and poor prognosis. Diagnosis is based on detection of CD4(+) CD56(+), CD123(high), TCL-1(+), and blood dendritic cell antigen-2/CD303(+) blasts, together with the absence of lineage specific antigens on tumour cells. In this report we present a case of BPDCN presenting with extramedullary and bone marrow involvement, extensively studied by flow cytometry and immunohistochemistry, who achieved complete remission after acute lymphoblastic leukemia like chemotherapy and allogeneic hematopoietic stem cell transplantation...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28393977/-blastic-plasmacytoid-dendritic-cell-neoplasm-with-complete-clinical-remission-with-chemotherapy-and-central-nervous-system-relapse-report-of-one-case
#10
Loreto Contreras, Loreto Mercado, Carolina Delgado, Claudia Cabezas, Laksmi Starke, Mónica Romero, Fernando Ibieta, Mauricio Henríquez, Mauricio Chandia
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare, clinically aggressive hematologic malignancy that most commonly manifests as cutaneous lesions with or without bone marrow involvement and leukemic dissemination. The demonstration of tumor cells with the characteristic immunophenotype with expression of CD56, generally CD4 and dendritic cell antigens (CD123, cyTCL-1, HLA-DR), in the absence of myeloid or lymphoid lineage markers is required for the diagnosis. Responses to chemotherapy are initially satisfactory, with frequent systemic and central nervous system relapses...
January 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28391288/cd33-cd96-and-death-associated-protein-kinase-dapk-expression-are-associated-with-the-survival-rate-and-or-response-to-the-chemotherapy-in-the-patients-with-acute-myeloid-leukemia-aml
#11
Yongfang Jiang, Ping Xu, Dandan Yao, Xi Chen, Haibin Dai
BACKGROUND Leukemia stem cells (LSC) are involved in the incidence, drug resistance, and relapse of leukemia while LSC-related antigen CD33, CD96, and DAPK expression in AML and its prognosis is still unclear. This study explored LSC-related antigens expression in acute myeloid leukemia (AML) and its prognosis. MATERIAL AND METHODS A total of 156 cases of AML patients were enrolled in the experiment. The expression of CD33, CD96, and DAPK in CD34+CD38-CD123+ LSC were tested by flow cytometry. The survival curve was established using the Kaplan-Meier method...
April 9, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28380264/hsp70-potentiates-interferon-alpha-production-by-plasmacytoid-dendritic-cells-relevance-for-cutaneous-lupus-and-vitiligo-pathogenesis
#12
C Jacquemin, J Rambert, S Guillet, D Thiolat, N Boukhedouni, M-S Doutre, A-S Darrigade, K Ezzedine, P Blanco, A Taieb, K Boniface, J Seneschal
BACKGROUND: Plasmacytoid dendritic cells (pDC) are a subset of DC specialized in the production of type I interferon (IFN-α/β) and involved in various cutaneous inflammatory and autoimmune disorders, such as cutaneous lupus (CLE) and vitiligo. Heat-Shock proteins (HSP) are molecular chaperones essential for maintaining cellular functions, but can act as a danger signal during inflammation. OBJECTIVES: To decipher the role of HSP70 in the production of IFNα by pDC in CLE and vitiligo...
April 5, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28338177/5-aminolevulinic-acid-photodynamic-therapy-stimulates-local-immunity-in-patients-with-condylomata-acuminata-via-activation-of-t-lymphocytes
#13
J Du, Q Cheng, Z Zhang, J-F Wu, F Li, S-Y Chen, Y-L Wang, X-N Lu, J-H Xu
OBJECTIVE: 5-Aminolevulinic acid photodynamic therapy (5-ALA-PDT) for condylomata acuminate (CA) is effective and safe, but how this treatment affects immune reaction is poorly understood. We aimed to explore the effects of PDT on local immunity in CA. PATIENTS AND METHODS: Immunohistochemical analysis before and after PDT was performed to analyze local changes in the distribution of T lymphocytes, CD123+ plasmacytoid dendritic cells (pDCs) and CD1a+ myeloid DCs...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28321124/combined-inhibition-of-%C3%AE-catenin-and-bcr-abl-synergistically-targets-tyrosine-kinase-inhibitor-resistant-blast-crisis-chronic-myeloid-leukemia-blasts-and-progenitors-in-vitro-and-in-vivo
#14
H Zhou, P Y Mak, H Mu, D H Mak, Z Zeng, J Cortes, Q Liu, M Andreeff, B Z Carter
Tyrosine kinase inhibitor (TKI) resistance and progression to blast crisis (BC), both related to persistent β-catenin activation, remain formidable challenges for chronic myeloid leukemia (CML). We observed overexpression of β-catenin in BC-CML stem/progenitor cells, particularly in granulocyte-macrophage progenitors, and highest among a novel CD34(+)CD38(+)CD123(hi)Tim-3(hi) subset as determined by CyTOF analysis. Co-culture with mesenchymal stromal cells (MSCs) induced the expression of β-catenin and its target CD44 in CML cells...
April 18, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28321093/successful-treatment-with-biweekly-chop-for-bone-marrow-relapse-of-blastic-plasmacytoid-dendritic-cell-neoplasm
#15
Keiko Ono, Mikiko Ise, Dai Ikebe, Akiyasu Sato, Xiaofei Wang, Takeaki Sugawara, Hideki Tsujimura, Makiko Itami, Kyoya Kumagai
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare and aggressive hematological malignancy derived from precursors of plasmacytoid dendritic cells. The majority of patients initially respond to multi-agent chemotherapy, though most relapse within a year and the prognosis is very poor. We report a 67-year-old man with erythema on the right chest and a nasopharyngeal mass. Histological examination revealed a mass of tumor cells expressing CD4, CD56, and CD123, but neither CD3 nor CD20. He was diagnosed with BPDCN...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28303135/a-human-lin-cd123-cd127-low-population-endowed-with-ilc-features-and-migratory-capabilities-contributes-to-immunopathological-hallmarks-of-psoriasis
#16
Luz María Mora-Velandia, Octavio Castro-Escamilla, Andrés González Méndez, Cristina Aguilar-Flores, Martha Velázquez-Avila, María Isabel Tussié-Luna, Juan Téllez-Sosa, César Maldonado-García, Fermín Jurado-Santacruz, Eduardo Ferat-Osorio, Jesus Martínez-Barnetche, Rosana Pelayo, Laura C Bonifaz
Innate lymphoid cells (ILC) are members of a heterogeneous family with a lymphoid origin that mimics the T helper (Th) cytokine profile. ILC are involved in early effector cytokine-mediated responses during infections in peripheral tissues. ILC also play an important role in chronic skin inflammatory diseases, including psoriasis. Although classical ILC express CD127, it has been recently reported that the presence of non-classical CD127(-) ILC populations and an early ILC precursor (EILP) CD127(low). ILC development has predominately been investigated in mouse models...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28296664/histomorphology-and-immunophenotype-of-eczematous-skin-lesions-revisited-skin-biopsies-are-not-reliable-in-differentiating-allergic-contact-dermatitis-irritant-contact-dermatitis-and-atopic-dermatitis
#17
Verena G Frings, Almut Böer-Auer, Kristine Breuer
Lesions of allergic contact dermatitis (ACD), irritant contact dermatitis (ICD), and atopic dermatitis (AD) share similar clinical features and thus, their diagnosis can be challenging. The aim of this study was to reassess histopathology and immunophenotyping properties to distinguish between ACD, ICD, and AD. Charts of patients with eczema, who had undergone complete routine diagnostic workup (skin biopsies, patch tests, skin prick tests, and respectively or serum IgE levels), were reviewed. Thirty-five skin biopsy specimens of 28 patients (mean age 64 ± 15 years; ♀ = 13 ♂ = 15) with clear diagnosis of ACD (n = 15), ICD (n = 6), or AD (n = 14) were analyzed...
March 10, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28272239/cutaneous-presentation-preceding-acute-monocytic-leukemia-a-care-compliant-article
#18
Xianhua Jin, Fuqiu Li, Xue Li, Wenjing Zhu, Yan Mou, Yang Huang, Huanyu Zhao, Wei Gao, Jianxin Xia
RATIONALE: Cutaneous presentation preceding acute myeloid leukemia (AML) is rare, and the prognosis is poor. PATIENT CONCERNS: We report 4 cases of AML cutis, where skin infiltration precedes any blood or bone marrow evidence of leukemia. We also reviewed 13 cases reported in English and Chinese literature. The 4 cases all presented typical cutaneous lesions without any systemic evidence of leukemia. Histopathological examination found that dense monomorphous cell infiltration involved the dermis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28246194/optimized-depletion-of-chimeric-antigen-receptor-t-cells-in-murine-xenograft-models-of-human-acute-myeloid-leukemia
#19
Sarah K Tasian, Saad S Kenderian, Feng Shen, Marco Ruella, Olga Shestova, Miroslaw Kozlowski, Yong Li, April Schrank-Hacker, Jennifer J D Morrissette, Martin Carroll, Carl H June, Stephan A Grupp, Saar Gill
We and others previously reported potent antileukemia efficacy of CD123-redirected chimeric antigen receptor (CAR) T cells in preclinical human acute myeloid leukemia (AML) models at the cost of severe hematologic toxicity. This observation raises concern for potential myeloablation in patients with AML treated with CD123-redirected CAR T cells and mandates novel approaches for toxicity mitigation. We hypothesized that CAR T-cell depletion with optimal timing after AML eradication would preserve leukemia remission and allow subsequent hematopoietic stem cell transplantation...
April 27, 2017: Blood
https://www.readbyqxmd.com/read/28245376/-prognostic-significance-of-the-percentage-of-blasts-with-cd34-cd38-low-cd123-phenotype-in-acute-myeloid-leukemias
#20
Li-Li Xiang, Guo-Qiang Qiu, Xiao-Bao Xie, Jian-Nong Cen, Shao-Yan Hu, Wei-Ying Gu
OBJECTIVE: To investigate the percentage of blasts with the CD34(+)/CD38(low/-)/CD123(+) phenotype in de novo acute myeloid leukemia (AML) patients and analyse its correlation with prognosis. METHODS: The percentage of CD34(+)/CD38(low/-)/CD123(+) cells in the blast population of 148 newly diagnosed patients with AML was determined by using flow cytometry and its correlation with complete response, disease-free survival and overall survival were evaluated. RESULTS: The median percentage of CD34(+)/CD38(low/-)/CD123(+) cells in newly diagnosed patients was 2...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
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