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https://www.readbyqxmd.com/read/28641612/-expression-and-significance-of-hif-1%C3%AE-in-erythropoiesis-of-secondary-iron-overload-disease-after-irradiation-damage
#1
Yi Xing, Ming-Feng Zhao, Xiao-Li Cao, Xin Jin, Jie Chen, Ping Xu, Song-Nan Sui, Yan-Yu Jiang, Xiao-Yuan He
OBJECTIVE: To study the expression of hypoxia inducible factor 1α(HIF-1α) of iron-overloaded in irradiated mice and its effect on erythropoiesis. METHODS: Twenty mice were randomly divided into 4 groups: Ctrl (control group), IR (irradiation group), IO (irradiation + iron overload group), and RAPA (rapamycin treatment group). The iron overload model was verified. The CFU-E (colony forming unit-erythroid) and BFU-E(burst colony forming unit-erythroid) were cultured; flow cytometry was used to detect the ratios of early stage (Ter119(+)CD71(-)) to late stage (Ter119(+)CD71(+)) of primitive erythroblasts; RT-PCR was used to detect the mRNA expression of HIF-1α and its related signal molecules in bone marrow cells...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28636114/set-i2pp2a-overexpression-induces-phenotypic-molecular-and-metabolic-alterations-in-an-oral-keratinocyte-cell-line
#2
Lays M Sobral, Ricardo D Coletta, Luciane C Alberici, Carlos Curti, Andréia Machado Leopoldino
The multifunctional SET/I2PP2A protein is known to be overexpressed in head and neck squamous cell carcinoma. However, SET has been reported to have apparently conflicting roles in promoting cancer cell survival under oxidative stress conditions and preventing invasion and metastasis, complicating efforts to understand the contribution of SET to carcinogenesis. In the present study, we overexpressed SET in a spontaneously immortalized oral keratinocyte cell line (NOK-SI SET) and demonstrated that SET up-regulation alone was sufficient to transform cells...
June 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28625017/a-single-tube-flow-cytometric-procedure-for-enhancing-the-diagnosis-and-prognostic-classification-of-patients-with-myelodysplastic-syndromes
#3
B Kárai, J Bedekovics, Zs Miltényi, L Gergely, L Szerafin, A Ujfalusi, J Kappelmayer, Zs Hevessy
INTRODUCTION: We created a simple and effective flow cytometry scoring system (FCSS) for suspected Myelodysplastic syndromes (MDS) samples and evaluated its diagnostic and prognostic potential. METHODS: Besides evaluating the four parameters suggested by Ogata, we investigated erythroid precursors and mast cells. We evaluated the six-parameter FCSS in a four-color setting (test cohort: 51 patients; 25 controls), then we implemented it into an eight-color setting and tested it on a validation cohort of patients with MDS (n=31)...
June 18, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28596542/leukocyte-bim-deficiency-does-not-impact-atherogenesis-in-ldlr-mice-despite-a-pronounced-induction-of-autoimmune-inflammation
#4
Lieve Temmerman, Marijke M Westra, Ilze Bot, Bart J M van Vlijmen, Niek Van Bree, Martine Bot, Kim L L Habets, Tom G H Keulers, Johan van der Vlag, Thomas G Cotter, Theo J C van Berkel, Erik A L Biessen
Proapoptotic Bcl-2 family member Bim is particularly relevant for deletion of autoreactive and activated T and B cells, implicating Bim in autoimmunity. As atherosclerosis is a chronic inflammatory process with features of autoimmune disease, we investigated the impact of hematopoietic Bim deficiency on plaque formation and parameters of plaque stability. Bim (-/-) or wild type bone marrow transplanted ldlr (-/-) mice were fed a Western type diet (WTD) for 5 or 10 weeks, after which they were immunophenotyped and atherosclerotic lesions were analyzed...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28591790/asian-g6pd-mahidol-reticulocytes-sustain-normal-plasmodium-vivax-development
#5
Germana Bancone, Benoit Malleret, Rossarin Suwanarusk, Nongnud Chowwiwat, Cindy S Chu, Rose McGready, Laurent Rénia, François Nosten, Bruce Russell
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common enzymatic disorder in humans and appears to be protective against falciparum severe malaria. Controversially, it is also thought that Plasmodium vivax has driven the recent selection of G6PD alleles. We use an experimental approach to determine whether G6PD-MahidolG487A variant, a widespread cause of severe G6PD deficiency in Southeast Asia, provides a barrier against vivax malaria. Our results show that the immature reticulocytes (CD71+) targeted by P...
June 7, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28586009/fli-1-overexpression-in-erythroleukemic-cells-promotes-erythroid-de-differentiation-while-spi-1-pu-1-exerts-the-opposite-effect
#6
Laura M Vecchiarelli-Federico, Tangjingjun Liu, Yao Yao, Yuanyuan Gao, Yanmei Li, You-Jun Li, Yaacov Ben-David
The ETS transcription factors play a critical role during hematopoiesis. In F-MuLV-induced erythroleukemia, Fli‑1 insertional activation producing high expression of this transcription factor required to promote proliferation. How deregulated Fli‑1 expression alters the balance between erythroid differentiation and proliferation is unknown. To address this issue, we exogenously overexpressed Fli‑1 in an erythroleukemic cell harboring activation of spi‑1/PU.1, another ETS gene involved in erythroleukemogenesis...
June 2, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28566856/immunophenotypic-and-molecular-analysis-of-human-dental-pulp-stem-cells-potential-for-neurogenic-differentiation
#7
Nikhat Fatima, Aleem A Khan, Sandeep K Vishwakarma
BACKGROUND: Growing evidence shows that dental pulp (DP) tissues could be a potential source of adult stem cells for the treatment of devastating neurological diseases and several other conditions. AIMS: Exploration of the expression profile of several key molecular markers to evaluate the molecular dynamics in undifferentiated and differentiated DP-derived stem cells (DPSCs) in vitro. SETTINGS AND DESIGN: The characteristics and multilineage differentiation ability of DPSCs were determined by cellular and molecular kinetics...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28551638/modulation-of-melanotransferrin-and-transferrin-receptor-1-tfrc-and-cd44-based-signaling-for-tfrc-up-regulation-in-human-melanoma-cells
#8
Friedemann Laube, Dagobert Glanz
BACKGROUND: The human melanoma cell line IGR-1 was used for the detection and regulation of both melanotransferrin (MTf) and transferrin receptor 1 (TFRC, CD71). While the function in iron transport of the TFRC is well documented the functional importance of MTf is not yet fully understood. Due to the up-regulation of TFRC by hyaluronan (HA) some components and aspects of CD44 signaling were investigated. MATERIALS AND METHODS: The cell-surface proteins MTf, TFRC and ERBB2 receptor tyrosine kinase 2 (ERBB2) were detected by immunoluminescent technique using different polyclonal and monoclonal antibodies...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28542307/the-mouse-char10-locus-regulates-severity-of-pyruvate-kinase-deficiency-and-susceptibility-to-malaria
#9
Aurélie Laroque, Gundula Min-Oo, Mifong Tam, Prem Ponka, Mary M Stevenson, Philippe Gros
Pyruvate kinase (PKLR) deficiency protects mice and humans against blood-stage malaria. Although mouse strain AcB62 carries a malaria-protective PklrI90N genetic mutation, it is phenotypically susceptible to blood stage malaria induced by infection with Plasmodium chabaudi AS, suggesting a genetic modifier of the PklrI90N protective effect. Linkage analysis in a F2 cross between AcB62 (PklrI90N) and another PK deficient strain CBA/Pk (PklrG338D) maps this modifier (designated Char10) to chromosome 9 (LOD = 10...
2017: PloS One
https://www.readbyqxmd.com/read/28523571/congenital-immature-pure-erythroid-leukemia-with-e-cadherin-expression
#10
Akihiro Tamura, Suguru Uemura, Atsuro Saito, Saki Okubo, Nanako Nino, Teppei Tahara, Takehito Yokoi, Kenji Kishimoto, Toshiaki Ishida, Daiichiro Hasegawa, Keiichiro Kawasaki, Seiji Yoshimoto, Hideto Nakao, Makiko Yoshida, Yoshiyuki Kosaka
Congenital pure erythroid leukemia is exceedingly rare and poses a diagnostic challenge. We report an atypical case of congenital pure erythroid leukemia that did not express typical erythroid markers. The patient presented with a high white blood cell count with blastic cells at birth. Although flow cytometric analyses of peripheral blood and bone marrow showed a large CD45-negative cell population, we did not identify any evidence of monoclonality. While the circulating blasts decreased with only supportive care, hepatomegaly with multiple nodules was accompanied by liver failure, disseminated intravascular coagulation, and development of hemophagocytic lymphohistiocytosis...
May 18, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28521840/characterising-pvrbsa-an-exclusive-protein-from-plasmodium-species-infecting-reticulocytes
#11
Darwin A Moreno-Pérez, Luis A Baquero, Diana M Chitiva-Ardila, Manuel A Patarroyo
BACKGROUND: Plasmodium vivax uses multiple ligand-receptor interactions for preferential invasion of human reticulocytes. Several of these ligands have been identified by in silico approaches based on the role displayed by their orthologs in other Plasmodium species during initial adhesion or invasion. However, the cell adhesion role of proteins that are exclusive to species that specifically invade reticulocytes (as P. vivax and P. cynomolgi) has not been evaluated to date. This study aimed to characterise an antigen shared between Plasmodium species that preferentially infect reticulocytes with a focus on assessing its binding activity to target cells...
May 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28446271/-expression-of-aurora-family-genes-in-acute-leukemia-and-its-clinical-significance
#12
Zi-Lei Liu, Ying Xing, Tao Li, Chong Wang, Su-Fang Liu, Hua-Yan Zhao, Rong-Hui Zhang, Ya-Jing Ma, Xin-Ye Zhang, Wen-Liang Tian, Liu Liu, Hui Sun, Ling Sun
OBJECTIVE: To explore the mRNA expression of Aurora-A,B,C(AUR-A,B,C) in acute leukemia(AL) and their correlations with the clinical indications. METHODS: The mRNA expression levels of AUR-A,B,C in 73 cases of newly diagnosed AL (untreated group), 20 cases of AL with remission (remission group) and 14 healthy volunteers as control (healthy group) were detected by QRT-PCR, and the difference of expression levels in difference groups, their correlations with clinical indicators and the correlation between the AUR-A,B,C mRNA expression levels themselves were analyzed...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28414070/the-unhealthy-attraction-of-plasmodium-vivax-to-reticulocytes-expressing-transferrin-receptor-1-cd71
#13
REVIEW
Benoit Malleret, Laurent Rénia, Bruce Russell
The majority of malaria parasite species prefer to invade reticulocytes, the most infamous being Plasmodium vivax. While the absence of an in vitro continuous culture method has hampered the study of P. vivax invasion biology, studies utilising primate models and ex vivo assays have provided some important insights. Most importantly, P. vivax merozoites have a strong preference for a subset of immature erythrocytes characterised by the expression of the transferrin receptor (CD71). This current opinion piece on P...
April 13, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28372797/unique-high-and-homogenous-surface-expression-of-the-transferrin-receptor-cd71-on-murine-plasmacytoid-dendritic-cells-in-different-tissues
#14
Anne Lippitsch, Yuri Chukovetskyi, Nelli Baal, Gregor Bein, Holger Hackstein
Plasmacytoid dendritic cells (pDC) are of increasing interest in cancer vaccine development, but many functions of these highly specialized, multifaceted cells are poorly understood. The transferrin receptor CD71 has also been suggested to function as an antigen uptake receptor on professional antigen-presenting cells. In this study, we employed multiparameter flow cytometry to investigate CD71 expression on various leukocyte subsets, including DC subsets, granulocytes, macrophages, T and B lymphocytes, γδ T cells, and natural killer cells...
March 29, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28372578/hpv16-e2-protein-modifies-self-renewal-and-differentiation-rate-in-progenitor-cells-of-human-immortalized-keratinocytes
#15
Victoria Domínguez-Catzín, Alicia-María Reveles-Espinoza, Janet Sánchez-Ramos, Raúl Cruz-Cadena, Diana Lemus-Hernández, Efraín Garrido
BACKGROUND: Cervical cancer is the fourth cause of death worldwide by cancer in women and is a disease associated to persistent infection with human papillomavirus (HPV), particularly from two high-risk types HPV16 and 18. The virus initiates its replicative cycle infecting cells located in the basal layer of the epithelium, where a small population of epithelial stem cells is located performing important functions of renewal and maintenance of the tissue. Viral E2 gene is one of the first expressed after infection and plays relevant roles in the replicative cycle of the virus, modifying fundamental processes in the infected cells...
April 3, 2017: Virology Journal
https://www.readbyqxmd.com/read/28365838/n-p-coumaroyl-serotonin-inhibits-glioblastoma-cells-growth-through-triggering-s-phase-arrest-and-apoptosis
#16
Diamanto Lazari, George A Alexiou, Georgios S Markopoulos, Evrysthenis Vartholomatos, Entela Hodaj, Ieremias Chousidis, Ioannis Leonardos, Vasiliki Galani, Athanasios P Kyritsis
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. N-(p-coumaroyl) serotonin (CS) is an indole alkaloid with antioxidant, cardioprotective effects after ischemia and antitumor activity. In the present study we sought to determine whether could exert cytotoxic and cytostatic effects in glioma cells in vitro. CS was tested for toxicity in zebrafish. We investigated the effect of CS in U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay and the xCELLigence system...
April 1, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28321976/a-5-color-flow-cytometric-method-for-extended-8-part-leukocyte-differential
#17
Julien Guy, Orianne Wagner-Ballon, Olivier Pages, François Bailly, Jessica Borgeot, Marie-C Béné, Marc Maynadié
OBJECTIVES: Microscopic leukocyte differentials display many drawbacks. Several single 5 to 8-color tubes using multiparameter flow cytometry (MFC) are able to provide extended differentials with sequential gating-based analysis strategies. We investigated a new 5-color MFC method to perform an extended 8-part differential with a simplified gating strategy. METHODS: Whole blood was stained with a combination of antibodies including HLA-DR-FITC/CD19-PE/CD45-ECD/CD16-PC5+CD71-PC5/CD5-PC7...
March 21, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28288151/pentoxifylline-modulates-lps-induced-hyperinflammation-in-monocytes-of-preterm-infants-in-vitro
#18
Simone S Schüller, Lukas Wisgrill, Elisabeth Herndl, Andreas Spittler, Elisabeth Förster-Waldl, Kambis Sadeghi, Boris W Kramer, Angelika Berger
BACKGROUND: Pentoxifylline (PTX), a methylxanthine derivate with immunomodulating properties, has been used as adjunctive treatment in severe neonatal sepsis. The aim of the study was to investigate PTX's anti-inflammatory effects on LPS stimulated monocytes of preterm neonates in vitro compared to monocytes from term infants and adult controls. METHODS: Whole cord blood and control adult blood samples were incubated with LPS and PTX. The expression of surface markers, phagocytosis, cytokine secretion and Toll-like-receptor (TLR)4 signaling of monocytes were assessed by flow cytometry...
March 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28284665/cryopreservation-and-multipotential-characteristics-evaluation-of-a-novel-type-of-mesenchymal-stem-cells-derived-from-small-tailed-han-sheep-fetal-lung-tissue
#19
Caiyun Ma, Changqing Liu, Xiangchen Li, Taofeng Lu, Chunyu Bai, Yanan Fan, Weijun Guan, Yu Guo
Lung mesenchymal stem cells (L-MSCs) characterized by plasticity, reduced relative immune privilege and high anti-fibrosis characteristics play the crucial role in lung tissue regenerative processes. However, up to date, the multi-differentiation potentials and application values of L-MSCs are still uncertain. In the current study, the Small Tailed Han Sheep embryo L-MSCs line from 12 samples, stocking 124 cryogenically-preserved vials, was successfully established by using primary culture and cell cryopreservation techniques...
April 2017: Cryobiology
https://www.readbyqxmd.com/read/28245371/-expression-of-cd146-in-adult-and-children-s-acute-b-cell-lymphoblastic-leukemia-and-its-significance
#20
Xiao-Qing Xie, Wei-Min Wang, Si-Lin Gan, Sheng-Mei Chen, Qiu-Tang Zhang, Xin-Sheng Xie, Yan-Fang Liu, Yuan-Dong Cheng, Yu-Feng Liu, Xue-Ju Xu, Hui Sun
OBJECTIVE: To explore the differences of CD146 expression in adult and children's acute B cell lymphoblastic leukemia(B-ALL), and its relation with clinical features, molecular biological and cytogenctic claracteristics. METHODS: The expression of CD146 in bone marrow samples from adult and children's B-ALL patients were detected by flow cytometry (FCM) and the relation of CD146 abnormal high expression with the patients' clinical features, molecular biological and cytogenetical characteristics, as well as other antigens were analyzed...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
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