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https://www.readbyqxmd.com/read/28070536/establishment-a-cho-cell-line-expressing-human-cd52-molecule
#1
Tati Kadijeh, Yazdanpanah-Samani Mahsa, Ramezani Amin, Mahmoudi Maymand Elham, Ghaderi Abbas
BACKGROUND: CD52 is a small glycoprotein with a GPI anchor at its C-terminus. CD52 is expressed by Normal and malignant T and B lymphocytes and monocytes. There are detectable amounts of soluble CD52 in plasma of patients with CLL and could be used as a tumor marker. Although the biological function of CD52 is unknown but it seems that CD52 may be involved in migration and activation of T-cells .The aim of this study was to clone and express human CD52 gene in CHO cell line and studying its function in more details...
October 2016: Reports of Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28024470/-establishment-of-human-chronic-lymphocytic-leukemia-model-in-the-balb-c-nude-mice-by-using-mec-1-and-hg3-cell-lines
#2
Chun-Ling Fu, Yan-Qing Gong, Yan Wan, Kai-Lin Xu
OBJECTIVE: To explore the the optimal condition for establishing immune deficiency mouse(BALB/c) model with CLL via subcutaneous inoculation of human chronic lymphocytic leukemia (CLL) cells at different inoculative locations and different cell concentrations. METHODS: Firstly, Two CLL cell lines (MEC-1-GFP and HG3-GFP)with the green fluorescent protein (GFP) were established by lentivirus system respectively, and then the MEC-1-GFP cells (5×10(7)/ml) were inoculated into forelimb, hindlimb and abdomen to observe the tumorigenesis...
December 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28004361/a-review-of-obinutuzumab-ga101-a-novel-type-ii-anti-cd20-monoclonal-antibody-for-the-treatment-of-patients-with-b-cell-malignancies
#3
REVIEW
Kensei Tobinai, Christian Klein, Naoko Oya, Günter Fingerle-Rowson
Obinutuzumab (GA101) is a novel, type II, glycoengineered, humanized anti-CD20 monoclonal antibody that has been developed to address the need for new therapeutics with improved efficacy in patients with lymphocytic leukemia and lymphoma of B-cell origin. Obinutuzumab has a distinct mode of action relative to type I anti-CD20 antibodies, such as rituximab, working primarily by inducing direct cell death and antibody-dependent cell-mediated cytotoxicity. Obinutuzumab is under investigation in a wide-ranging program of clinical trials in patients with B-cell malignancies...
December 21, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/28003273/ebi2-overexpression-in-mice-leads-to-b1-b-cell-expansion-and-chronic-lymphocytic-leukemia-cll-like-b-cell-malignancies
#4
Kristine Niss Arfelt, Line Barington, Tau Benned-Jensen, Valentina Kubale, Alexander L Kovalchuk, Viktorija Daugvilaite, Jan Pravsgaard Christensen, Allan Randrup Thomsen, Kristoffer L Egerod, Maria R Bassi, Katja Spiess, Thue W Schwartz, Hongsheng Wang, Herbert C Morse, Peter J Holst, Mette M Rosenkilde
Human and mouse chronic lymphocytic leukemia (CLL) develop from CD5+ B cells that in mice and macaques are known to define the distinct B1a B cell lineage. B1a cells are characterized by lack of germinal center development and the B1a cell population is increased in mice with reduced germinal center formation. As a major mediator of follicular B cell migration, the G protein-coupled receptor (GPCR) Epstein Barr virus-induced gene 2 (EBI2 or GPR183) directs B cell migration in the lymphoid follicles in response to its endogenous ligands, oxysterols...
December 21, 2016: Blood
https://www.readbyqxmd.com/read/27993930/absorption-metabolism-and-excretion-of-a-novel-bcl-2-inhibitor-venetoclax-in-humans
#5
Hong Liu, Melissa J Michmerhuizen, Yanbin Lao, Katty Wan, Ahmed Hamed Salem, James Sawicki, Michael Serby, Srirajan Vaidyanathan, Shekman L Wong, Suresh Agarwal, Martin Dunbar, Jens Sydor, Sonia Maria de Morais, Anthony J Lee
Venetoclax (also known as ABT-199) is a B-cell lymphoma-2 (Bcl-2) family protein inhibitor and is currently in clinical development for the treatment of chronic lymphocytic leukaemia (CLL) and other hematological malignancies. The objective of this study was to characterize the absorption, metabolism, and excretion of venetoclax in humans. Following a single oral dose of 200 mg (100 μ - Ci) of [(14)C]venetoclax to four healthy volunteers, recovery of total radioactive dose was 100% (± 5%), with feces being the major route of elimination of the administered dose, whereas urinary excretion was minimal (<0...
December 19, 2016: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/27977057/randomized-phase-2-study-of-otlertuzumab-and-bendamustine-versus-bendamustine-in-patients-with-relapsed-chronic-lymphocytic-leukaemia
#6
Tadeusz Robak, Andrzej Hellmann, Janusz Kloczko, Javier Loscertales, Ewa Lech-Maranda, John M Pagel, Anthony Mato, John C Byrd, Farrukh T Awan, Holger Hebart, Jose A Garcia-Marco, Brian T Hill, Michael Hallek, Amy J Eisenfeld, Scott C Stromatt, Ulrich Jaeger
Otlertuzumab (TRU-016) is a humanized anti-CD37 protein therapeutic that triggers direct caspase-independent apoptosis of malignant B cells and induces antibody-dependent cell-mediated cytotoxicity. Patients with relapsed chronic lymphocytic leukaemia (CLL) received either otlertuzumab (20 mg/kg) weekly by IV infusion for two 28-day cycles then every 14 days for four 28-day cycles and IV bendamustine (70 mg/m(2) ) on Days 1 and 2 of each cycle for up to six 28-day cycles or bendamustine alone. Thirty-two patients were treated with otlertuzumab and bendamustine and 33 with bendamustine alone...
December 15, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27933341/intragenic-variations-in-btla-gene-influence-mrna-expression-of-btla-gene-in-chronic-lymphocytic-leukemia-patients-and-confer-susceptibility-to-chronic-lymphocytic-leukemia
#7
Lidia Karabon, Anna Partyka, Monika Jasek, Ewa Lech-Maranda, Olga Grzybowska-Izydorczyk, Agnieszka Bojarska-Junak, Edyta Pawlak-Adamska, Anna Tomkiewicz, Tadeusz Robak, Jacek Rolinski, Irena Frydecka
The aim of this study was to determine the association between polymorphisms in gene encoding B- and T-lymphocyte attenuator (BTLA) and susceptibility to chronic lymphocytic leukemia (CLL) and their influence on mRNA expression of BTLA gene in T and B cells from CLL patients (pts.). The following BTLA single-nucleotide polymorphisms (SNPs): rs2705511, rs1982809, rs9288952, rs76844316, rs16859633, rs9288953, rs2705535, rs1844089, rs2705565, rs2633580 were genotyped with use of TaqMan probes in 321 CLL pts. and in 470 controls...
December 8, 2016: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/27908880/an-anti-cd3-anti-cll-1-bispecific-antibody-for-the-treatment-of-acute-myeloid-leukemia
#8
Steven R Leong, Siddharth Sukumaran, Maria Hristopoulos, Klara Totpal, Shannon Stainton, Elizabeth Lu, Alfred Wong, Lucinda Tam, Robert Newman, Brian R Vuillemenot, Diego Ellerman, Chen Gu, Mary Mathieu, Mark S Dennis, Allen Nguyen, Bing Zheng, Crystal Zhang, Genee Lee, Yu-Waye Chu, Rodney A Prell, Kedan Lin, Steven T Laing, Andrew G Polson
Acute myeloid leukemia (AML) is major unmet medical need. Most patients have poor long-term survival and treatment has not significantly changed in 40 years. Recently, bispecific antibodies that redirect the cytotoxic activity of effector T-cells by binding to CD3, the signaling component of the T-cell receptor, and a tumor target have shown clinical activity. Notably, blinatumomab is approved to treat relapsed/refractory acute lymphoid leukemia. Here we describe the design, discovery, pharmacological activity, pharmacokinetics, and safety of a CD3 T-cell-dependent bispecific (TDB) full-length human IgG1 therapeutic antibody targeting CLL-1 that could potentially be used in humans to treat AML...
December 1, 2016: Blood
https://www.readbyqxmd.com/read/27903679/the-bruton-s-tyrosine-kinase-btk-inhibitor-acalabrutinib-demonstrates-potent-on-target-effects-and-efficacy-in-two-mouse-models-of-chronic-lymphocytic-leukemia
#9
Sarah E M Herman, Arnau Montraveta, Carsten U Niemann, Helena Mora-Jensen, Michael Gulrajani, Fanny Krantz, Rose Mantel, Lisa L Smith, Fabienne McClanahan, Bonnie Harrington, Dolors Colomer, Todd Covey, John C Byrd, Raquel Izumi, Allard Kaptein, Roger Ulrich, Amy Johnson, Brian J Lannutti, Adrian Wiestner, Jennifer A Woyach
PURPOSE: Acalabrutinib (ACP-196) is a novel, potent, and highly selective BTK inhibitor, which binds covalently to Cys481 in the ATP-binding pocket of BTK. We sought to evaluate the anti-tumor effects of acalabrutinib treatment in two established mouse models of chronic lymphocytic leukemia (CLL). EXPERIMENTAL DESIGN: Two distinct mouse models were used, the TCL1 adoptive transfer model where leukemic cells from Eμ-TCL1 transgenic mice are transplanted into C57BL/6 mice, and the human NSG primary CLL xenograft model...
November 30, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27890931/a-tlr7-agonist-enhances-the-antitumor-efficacy-of-obinutuzumab-in-murine-lymphoma-models-via-nk-cells-and-cd4-t-cells
#10
E J Cheadle, G Lipowska-Bhalla, S J Dovedi, E Fagnano, C Klein, J Honeychurch, T M Illidge
Anti-CD20 monoclonal antibodies (mAb) such as rituximab have been proven to be highly effective at improving outcome in B-cell malignancies. However, many patients ultimately relapse and become refractory to treatment. The glycoengineered anti-CD20 mAb obinutuzumab was developed to induce enhanced antibody-dependent cellular cytotoxicity, antibody-dependent phagocytosis and direct cell death and was shown to lead to improved outcomes in a randomized study in B-CLL. We hypothesized that immune stimulation through Toll-like receptor 7 (TLR7) agonism in combination with obinutuzumab would further enhance lymphoma clearance and the generation of long-term antitumor immune responses...
January 3, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27859015/hla-e-allelic-genotype-correlates-with-hla-e-plasma-levels-and-predicts-early-progression-in-chronic-lymphocytic-leukemia
#11
Bettina Wagner, Fabiola da Silva Nardi, Sabine Schramm, Thomas Kraemer, Alexander A Celik, Jan Dürig, Peter A Horn, Ulrich Dührsen, Holger Nückel, Vera Rebmann
BACKGROUND: Human leukocyte antigen-E (HLA-E) is a nonclassical major histocompatibility complex class I molecule that recently came into sharper focus as a putative marker of advanced tumor stages and disease progression. In solid tumors, increased HLA-E expression as well as elevated soluble HLA-E (sHLA-E) plasma levels are associated with a poor prognosis; however, a role for HLA-E in hematologic malignancies remains to be established. METHODS: The authors analyzed HLA-E alleles and sHLA-E levels in a cohort of 110 individuals with chronic lymphocytic leukemia (CLL)...
November 2, 2016: Cancer
https://www.readbyqxmd.com/read/27843137/pi3k%C3%AE-inhibition-elicits-anti-leukemic-effects-through-bim-dependent-apoptosis
#12
M J Carter, K L Cox, S J Blakemore, A H Turaj, R J Oldham, L N Dahal, S Tannheimer, F Forconi, G Packham, M S Cragg
PI3Kδ plays pivotal roles in the maintenance, proliferation and survival of malignant B-lymphocytes. Although not curative, PI3Kδ inhibitors (PI3Kδi) demonstrate impressive clinical efficacy and, alongside other signaling inhibitors, are revolutionizing the treatment of hematological malignancies. However, only limited in vivo data are available regarding their mechanism of action. With the rising number of novel treatments, the challenge is to identify combinations that deliver curative regimes. A deeper understanding of the molecular mechanism is required to guide these selections...
December 20, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27835587/nerve-growth-factor-modulates-the-tumor-cells-migration-in-ovarian-cancer-through-the-wnt-%C3%AE-catenin-pathway
#13
Bo Li, Shaoxi Cai, Yi Zhao, Qiyi He, Xiaodong Yu, Longcong Cheng, Yingfeng Zhang, Xiancheng Hu, Ming Ke, Sijia Chen, Misha Zou
Nerve growth factor (NGF)/nerve growth factor receptors (NGFRs) axis and canonical WNT/β-catenin pathway have shown to play crucial roles in tumor initiation, progression and prognosis. But little did we know the relationship between them in modulation of tumor progress. In this report, we found that NGF/NGFRs and β-catenin were coexpression in ovarian cancer cell lines, and NGF can decrease the expression level of β-catenin and affect its activities, which may be related to the NGF-induced down-regulation of B-cell CLL/lymphoma 9-like (BCL9L, BCL9-2)...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27822067/bcl3-exerts-an-oncogenic-function-by-regulating-stat3-in-human-cervical-cancer
#14
Hu Zhao, Wuliang Wang, Qinghe Zhao, Guiming Hu, Kehong Deng, Yuling Liu
Aberrant expression of oncogenes and/or tumor suppressors play a fundamental effect on the pathogenesis and tumorigenicity of cervical cancer (CC). B-cell CLL/lymphoma 3 (BCL3) was previously found to be a putative proto-oncogene in human cancers and regulated signal transducer and activator of transcription 3 (STAT3), a critical oncogene, in CC cell line. However, its expression status, clinical significance and biological functions in CC remain largely unclear. The expressions of BCL3 and STAT3 in CC specimens were determined by immunohistochemistry...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27818134/transcriptomic-characterization-of-sf3b1-mutation-reveals-its-pleiotropic-effects-in-chronic-lymphocytic-leukemia
#15
Lili Wang, Angela N Brooks, Jean Fan, Youzhong Wan, Rutendo Gambe, Shuqiang Li, Sarah Hergert, Shanye Yin, Samuel S Freeman, Joshua Z Levin, Lin Fan, Michael Seiler, Silvia Buonamici, Peter G Smith, Kevin F Chau, Carrie L Cibulskis, Wandi Zhang, Laura Z Rassenti, Emanuela M Ghia, Thomas J Kipps, Stacey Fernandes, Donald B Bloch, Dylan Kotliar, Dan A Landau, Sachet A Shukla, Jon C Aster, Robin Reed, David S DeLuca, Jennifer R Brown, Donna Neuberg, Gad Getz, Kenneth J Livak, Matthew M Meyerson, Peter V Kharchenko, Catherine J Wu
Mutations in SF3B1, which encodes a spliceosome component, are associated with poor outcome in chronic lymphocytic leukemia (CLL), but how these contribute to CLL progression remains poorly understood. We undertook a transcriptomic characterization of primary human CLL cells to identify transcripts and pathways affected by SF3B1 mutation. Splicing alterations, identified in the analysis of bulk cells, were confirmed in single SF3B1-mutated CLL cells and also found in cell lines ectopically expressing mutant SF3B1...
November 14, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27774950/-knock-down-of-bcl11a-expression-in-breast-cancer-cells-promotes-mda-mb-231-cell-apoptosis
#16
Hongli Li, Chen Gui, Lijun Yan
Objective To detect the expression and pathological significance of B-cell CLL/lymphoma 11A (BCL11A) in breast cancer and investigate the effect of its silencing on the apoptosis of human MDA-MB-231 breast cancer cells. MethodsImmunohistochemistry was used to detect the expression of BCL11A in 62 cases of human breast cancer tissues and 8 cases of normal tissues. We synthesized siRNA targeting BCL11A, and then siRNA was transfected into MDA-MB-231 cells. Forty-eight hours later, the suppression effect of siRNA on BCL11A was determined by quantitative real-time PCR and Western blotting...
November 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27765352/dioscin-suppresses-hepatocellular-carcinoma-tumor-growth-by-inducing-apoptosis-and-regulation-of-tp53-bax-bcl2-and-cleaved-casp3
#17
Guangxian Zhang, Xiancheng Zeng, Ren Zhang, Juan Liu, Weici Zhang, Yujun Zhao, Xiaoyuan Zhang, Zhixue Wu, Yuhui Tan, Yingya Wu, Biaoyan Du
BACKGROUND: Hepatocellular carcinoma (HCC) is the most commonly diagnosed malignancy of the liver, occurs frequently in the setting of chronic liver injury. Although multiple therapeutic approaches are available, the prognosis of patients with HCC remains poor. Dioscin is a natural steroid saponin that presents in various plants. The anti-cancer and anti-fibrotic effects have been extensively reported. However, the effect of dioscin on HCC remains unclear. We aimed to investigate the anti-HCC properties of dioscin in vitro and in vivo...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27761889/microrna-155-in-serum-derived-extracellular-vesicles-as-a-potential-biomarker-for-hematologic-malignancies-a-short-report
#18
Antonella Caivano, Francesco La Rocca, Vittorio Simeon, Marco Girasole, Simone Dinarelli, Ilaria Laurenzana, Angelo De Stradis, Luciana De Luca, Stefania Trino, Antonio Traficante, Giovanni D'Arena, Giovanna Mansueto, Oreste Villani, Giuseppe Pietrantuono, Luca Laurenti, Luigi Del Vecchio, Pellegrino Musto
PURPOSE: The use of extracellular vesicles (EVs) from body fluids as "liquid biopsies" is emerging as a promising approach for the diagnosis, prognosis and therapeutic monitoring of cancer patients. MicroRNA-155 (miR155), a non-coding transcript of the B-cell integration cluster (BIC) gene, has been reported to play a critical role in the pathogenesis of several types of hematologic malignancies (HMs) in which high miR155 levels have been found. At yet, however, the EV miR155 level and its putative clinical relevance in sera of HM patients have not been reported...
October 19, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27757305/mono-and-dual-targeting-triplebodies-activate-natural-killer-cells-and-have-anti-tumor-activity-in-vitro-and-in-vivo-against-chronic-lymphocytic-leukemia
#19
Maulik Vyas, Ann-Charlott Schneider, Olga Shatnyeva, Katrin S Reiners, Samir Tawadros, Stephan Kloess, Ulrike Köhl, Michael Hallek, Hinrich P Hansen, Elke Pogge von Strandmann
Chronic lymphocytic leukemia (CLL) is the most common form of leukemia that affects B lymphocytes in adults. Natural killer (NK) cells in CLL patients are intrinsically potent but display poor in situ effector functions. NKG2D is an activating receptor found on NK and CD8(+) T cells and plays a role in immunosurveillance of CLL. In this study, we developed mono- and dual-targeting triplebodies utilizing a natural ligand for human NKG2D receptor (ULBP2) to retarget NK cells against tumor cells. Triplebodies in both formats showed better ability to induce NK-cell-dependent killing of target cells compared to bispecific counterparts...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27748795/b-cell-cll-lymphoma-3-promotes-glioma-cell-proliferation-and-inhibits-apoptosis-through-the-oncogenic-stat3-pathway
#20
Jianheng Wu, Linfan Li, Guangyuan Jiang, Hui Zhan, Nannan Wang
Aberrant expression of oncogenes and/or tumor suppressors play fundamental roles in the pathogenesis of glioma. B-cell CLL/lymphoma 3 (BCL3) was previously found to be a putative proto-oncogene in human cancers and the decoy receptor DcR1 is induced in a p50/Bcl3-dependent manner and attenuates the efficacy of temozolomide in glioblastoma cells. However, its expression status, clinical significance and biological functions in glioma remain largely unknown. In the present study, the levels of BCL3 were overexpressed in glioma compared to normal brain tissues...
December 2016: International Journal of Oncology
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