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Burkitt's lymphoma

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https://www.readbyqxmd.com/read/29348316/evaluation-of-next-generation-anti-cd20-antibodies-labeled-with-zirconium-89-in-human-lymphoma-xenografts
#1
Jason T Yoon, Mark S Longtine, Bernadette V Marquez-Nostra, Richard L Wahl
Radioimmunotherapies with monoclonal antibodies (mAbs) to the B-lymphocyte antigen 20 (CD20) are effective treatments for B-cell lymphomas, but United States Food and Drug Administration (FDA)-approved radioimmunotherapies exclusively use radiolabeled murine antibodies, potentially limiting re-dosing. The FDA recently approved two unlabeled anti-CD20 monoclonal antibodies, obinutizumab and ofatumumab, termed "next generation" as they are humanized (obinituzumab) or fully human (ofatumumab), thus potentially allowing a greater potential for re-dosing than with previous generation anti-CD20 antibodies, including rituximab (chimeric) and tositumumab (murine) which contain more murine peptide sequences...
January 18, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29337376/crispr-cas9-mediated-genome-editing-in-epstein-barr-virus-transformed-lymphoblastoid-b-cell-lines
#2
Sizun Jiang, Liang Wei Wang, Michael J Walsh, Stephen J Trudeau, Catherine Gerdt, Bo Zhao, Benjamin E Gewurz
Epstein-Barr virus (EBV) efficiently transforms primary human B cells into immortalized lymphoblastoid cell lines (LCLs), which are extensively used in human genetic, immunological and virological studies. LCLs provide unlimited sources of DNA for genetic investigation, but can be difficult to manipulate, for instance because low retroviral or lentiviral transduction frequencies hinder experiments that require co-expression of multiple components. This unit details Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9 engineering for robust LCL genome editing...
January 16, 2018: Current Protocols in Molecular Biology
https://www.readbyqxmd.com/read/29333543/in-vitro-evaluation-of-the-enantiomeric-r-and-s-1-1-binaphthyl-2-2-diaminodichlorido-pt-ii-complexes-in-human-burkitt-lymphoma-cells-emphasis-on-cellular-accumulation-cytotoxicity-dna-binding-and-ability-to-induce-apoptosis
#3
Belinda H Sørensen, Patrick Werth, Ian H Lambert, Patrick J Bednarski
The aim of this project is to gain insights into the uptake and cellular actions of the enantiomeric R- and S-1,1'-binaphthyl-2,2'-diaminodichlorido-Pt(ii) complexes (R- and S-[Pt(DABN)Cl2]) in the cisplatin-sensitive human Burkitt lymphoma cell line (Gumbus, IC50: 1.3 ± 0.2 μM) and its cisplatin-resistant sub-line (CDDPrGB, IC50: 6.6 ± 1.2 μM). The cellular uptakes of R- and S-[Pt(DABN)Cl2] are ca. 4-fold higher than cisplatin, and involve a transport mechanism independent of the volume-sensitive, organic anion-channel complex, which facilitates cisplatin accumulation...
January 15, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29327714/a-comprehensive-flow-cytometry-based-immunophenotypic-characterization-of-burkitt-like-lymphoma-with-11q-aberration
#4
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/29318382/mir-29-silencing-modulates-the-expression-of-target-genes-related-to-proliferation-apoptosis-and-methylation-in-burkitt-lymphoma-cells
#5
Luciano Mazzoccoli, Marcela Cristina Robaina, Alexandre Gustavo Apa, Martin Bonamino, Luciana Wernersbach Pinto, Eduardo Queiroga, Carlos E Bacchi, Claudete Esteves Klumb
PURPOSE: Burkitt lymphoma (BL) is a B-cell lymphoma frequently diagnosed in children. It is characterized by MYC translocations, which lead to the constitutive expression of the MYC oncogene. MYC contributes to miR-29 repression through an E-box MYC binding site on the miR-29b-1/miR-29a promoter region. We evaluated the role of miR-29a/b/c and their predicted targets in BL pathogenesis. METHODS: Mature sequences of miR-29a/b/c were transfected to the BL cell lines BL41 and Raji, and evaluated for DNMT3B, MCL1, BIM, CDK6, AKT and TCL1 protein expression as well as for MCL-1 and CDK6 mRNA expression...
January 9, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29315142/enteroviral-encephalitis-in-a-child-with-cns-relapse-of-burkitt-leukemia-treated-with-rituximab
#6
Najma Shaheen, Francis Mussai
A boy with central nervous system relapse of Burkitt leukemia developed fever and neurological symptoms and cognitive impairment. He had received multi-drug chemotherapy including rituximab. Enterovirus (EV) was detected in cerebrospinal fluid by polymerase chain reaction, and magnetic resonance imaging findings were consistent with viral infection. The patient was treated with intravenous immunoglobulin and within 1 month cleared his EV. Rituximab can cause a profound B-cell deficiency predisposing patients to infections including EV encephalitis...
January 8, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29313490/replication-study-transcriptional-amplification-in-tumor-cells-with-elevated-c-myc
#7
L Michelle Lewis, Meredith C Edwards, Zachary R Meyers, C Conover Talbot, Haiping Hao, David Blum, Elizabeth Iorns, Rachel Tsui, Alexandria Denis, Nicole Perfito, Timothy M Errington
As part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Blum et al., 2015), that described how we intended to replicate selected experiments from the paper 'Transcriptional amplification in tumor cells with elevated c-Myc' (Lin et al., 2012). Here we report the results. We found overexpression of c-Myc increased total levels of RNA in P493-6 Burkitt's lymphoma cells; however, while the effect was in the same direction as the original study (Figure 3E; Lin et al., 2012), statistical significance and the size of the effect varied between the original study and the two different lots of serum tested in this replication...
January 9, 2018: ELife
https://www.readbyqxmd.com/read/29309299/comparison-of-myocyte-enhancer-factor-2b-versus-other-germinal-center-associated-antigens-in-the-differential-diagnosis-of-b-cell-non-hodgkin-lymphomas
#8
Erika M Moore, Steven H Swerdlow, Sarah E Gibson
Myocyte enhancer binding factor 2B (MEF2B) is a transcriptional activator of the BCL6 proto-oncogene in normal germinal center (GC) B-cells. Limited data exists concerning its expression in B-cell lymphomas, and comparison with other GC-associated antigens is lacking. Its role in the differential diagnosis of B-cell lymphomas, particularly in the distinction of follicular lymphoma (FL) versus marginal zone lymphoma (MZL), remains to be determined. We evaluated MEF2B expression, in comparison with additional GC markers, LIM domain-only transcription factor 2 (LMO2), and human GC-associated lymphoma (HGAL), in a variety of B-cell lymphomas, with particular emphasis on their utility in differentiating FL from MZL...
January 5, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29307939/burkitt-like-lymphoma-of-the-brain-mimicking-an-intraventricular-colloid-cyst
#9
Rodolfo Mendes Queiroz, Lucas Giansante Abud, Thiago Giansante Abud, Cecília Hissae Miyake, Antonio Carlos Dos Santos
No abstract text is available yet for this article.
November 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/29303964/new-interactors-of-the-truncated-ebna-lp-protein-identified-by-mass-spectrometry-in-p3hr1-burkitt-s-lymphoma-cells
#10
Sonia Chelouah, Emilie Cochet, Sophie Couvé, Sandy Balkaran, Aude Robert, Evelyne May, Vasily Ogryzko, Joëlle Wiels
The Epstein-Barr virus nuclear antigen leader protein (EBNA-LP) acts as a co-activator of EBNA-2, a transcriptional activator essential for Epstein-Barr virus (EBV)-induced B-cell transformation. Burkitt's lymphoma (BL) cells harboring a mutant EBV strain that lacks both the EBNA-2 gene and 3' exons of EBNA-LP express Y1Y2-truncated isoforms of EBNA-LP (tEBNA-LP) and better resist apoptosis than if infected with the wild-type virus. In such BL cells, tEBNA-LP interacts with the protein phosphatase 2A (PP2A) catalytic subunit (PP2A C), and this interaction likely plays a role in resistance to apoptosis...
January 5, 2018: Cancers
https://www.readbyqxmd.com/read/29297171/treatment-of-hiv-associated-lymphomas-the-latest-approaches-for-optimizing-outcomes
#11
REVIEW
Natasha B Hunter, Samantha Vogt, Richard F Ambinder
Treatment outcomes for patients with HIV-related lymphoma have improved since the advent of combination antiretroviral therapy. Standard regimens, including intensive regimens, are being used with encouraging results in patients with diffuse large B-cell lymphoma, Burkitt lymphoma, Hodgkin lymphoma, and primary central nervous system lymphoma. Approaches to salvage therapy also parallel those used in patients without HIV infection, including autologous and allogeneic hematopoietic stem cell transplant. Drug interactions with particular antiretrovirals warrant close attention...
December 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/29296973/high-throughput-sequencing-of-the-b-cell-receptor-in-african-burkitt-lymphoma-reveals-clues-to-pathogenesis
#12
Katharine A Lombardo, David G Coffey, Alicia J Morales, Christopher S Carlson, Andrea M H Towlerton, Sarah E Gerdts, Francis K Nkrumah, Janet Neequaye, Robert J Biggar, Jackson Orem, Corey Casper, Sam M Mbulaiteye, Kishor G Bhatia, Edus H Warren
Burkitt lymphoma (BL), the most common pediatric cancer in sub-Saharan Africa, is a malignancy of antigen-experienced B lymphocytes. High-throughput sequencing (HTS) of the immunoglobulin heavy (IGH) and light chain (IGK/IGL) loci was performed on genomic DNA from 51 primary BL tumors: 19 from Uganda and 32 from Ghana. Reverse transcription polymerase chain reaction analysis and tumor RNA sequencing (RNAseq) was performed on the Ugandan tumors to confirm and extend the findings from the HTS of tumor DNA. Clonal IGH and IGK/IGL rearrangements were identified in 41 and 46 tumors, respectively...
March 28, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296767/high-throughput-sequencing-reveals-novel-features-of-immunoglobulin-gene-rearrangements-in-burkitt-lymphoma
#13
Katharine A Lombardo, David G Coffey, Alicia J Morales, Christopher S Carlson, Andrea M H Towlerton, Sarah E Gerdts, Francis K Nkrumah, Janet Neequaye, Robert J Biggar, Jackson Orem, Corey Casper, Sam M Mbulaiteye, Kishor G Bhatia, Edus H Warren
No abstract text is available yet for this article.
July 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296766/structure-and-diversification-of-immunoglobulin-genes-in-african-burkitt-lymphoma
#14
Ralf Küppers
No abstract text is available yet for this article.
July 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296171/micrornas-sequencing-unveils-distinct-molecular-subgroups-of-plasmablastic-lymphoma
#15
Maria Raffaella Ambrosio, Lucia Mundo, Sara Gazaneo, Matteo Picciolini, Prasad Satya Vara, Shaheen Sayed, Alessandro Ginori, Giuseppe Lo Bello, Leonardo Del Porro, Mohsen Navari, Stefano Ascani, Amhed Yonis, Lorenzo Leoncini, Pier Paolo Piccaluga, Stefano Lazzi
Plasmablastic lymphoma (PBL) is an aggressive lymphoma, often arising in the context of immunodeficiency and associated with Epstein-Barr virus (EBV) infection. The most frequently detected genetic alteration is the deregulation of MYC gene through the translocation - t(8;14)(q24;q32). The diagnosis of PBL is often challenging because it has an overlap in morphology, immunophenotype, cytogenetics and virus association with other lymphomas and plasma cell neoplasms; further, its molecular basis remains elusive...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29295643/the-genomic-landscape-of-two-burkitt-lymphoma-cases-and-derived-cell-lines-comparison-between-primary-and-relapse-samples
#16
Claudia M Wever, Dominique Geoffrion, Bruno M Grande, Stephen Yu, Miguel Alcaide, Maryse Lemaire, Yasser Riazalhosseini, Josée Hébert, Christina Gavino, Donald C Vinh, Tina Petrogiannis-Haliotis, Svetlana Dmitrienko, Koren K Mann, Ryan D Morin, Nathalie A Johnson
Relapse occurs in 10-40% of Burkitt lymphoma (BL) patients that have completed intensive chemotherapy regimens and is typically fatal. While treatment-naive BL has been characterized, the genomic landscape of BL at the time of relapse (rBL) has never been reported. Here, we present a genomic characterization of two rBL patients. The diagnostic samples had mutations common in BL, including MYC and CCND3. Additional mutations were detected at relapse, affecting important pathways such as NFκB (IKBKB) and MEK/ERK (NRAS) signaling, glutamine metabolism (SIRT4), and RNA processing (ZFP36L2)...
January 3, 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29290192/demographics-and-outome-in-paediatric-non-hodgkin-lymphoma-single-centre-experience-at-the-children-hospital-lahore-pakistan
#17
Mahwish Faizan, Saadia Anwar, Safia Khan
OBJECTIVE: To describe the patient demographics and outcome analysis in paediatric non-Hodgkin lymphoma (NHL) patients. STUDY DESIGN: An observational study. PLACE AND DURATION OF STUDY: The Hematology/Oncology Unit of The Children's Hospital and Institute of Child Health, Lahore, from January 2012 till December 2014. METHODOLOGY: Demographics including age, gender, histopathology, stage and outcome data, in biopsy proven NHL patients were analyzed...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29286611/descriptive-epidemiology-of-cancers-in-togo-from-2009-to-2016
#18
Tchin Darre, Tchilabalo M Kpatcha, Aklesso Bagny, Nidain Maneh, Faré Gnandi-Piou, Boyodi Tchangai, Sassil Daré, Solange Adani-Ifé, Atchi Walla, Koffi Amégbor, Gado Napo-Koura
Background: Cancer is a global public health problem. According to World Report on Cancer in 2000, developing countries are becoming increasingly affected. Methods: This retrospective and descriptive 8-year study of all histological confirmed cancers was conducted using data from the anatomical pathology laboratory registry of Togo’s only laboratory. The parameters were frequency, site and histological type as well as age and gender. Results: We found 1,738 cancers in patients aged from 4 months to 109 years (mean, 50...
December 29, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29285409/massive-lumbar-spine-hematoma-post-spinal-tap
#19
Ahmed Al Jishi, Naresh Murty
Background: Lumbar puncture is a well-known procedure. The indications for lumbar puncture vary among different medical and surgical disciplines, though obtaining a sample for cerebrospinal fluid analysis is the most common one. A normal coagulation profile is crucial prior to pursing the procedure. Occasionally, an urgent sample is needed to guide an appropriate treatment while the patient's coagulation status is suboptimum. In those specific critical situations, some may accept suboptimal correction owing to the urgency of the case...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29285387/breast-cancer-cases-of-female-patients-under-35-years-of-age-in-togo-a-series-of-158-cases
#20
Tchin Darré, Mazamaesso Tchaou, Koué Folligan, Abdoulatif Amadou, Bidamin N'Timon, Lantam Sonhaye, Abdoul-Samadou Aboubakari, Koffi Amégbor, Koffi Akpadza, Gado Napo Koura
Breast cancer in young female patients represents a public health problem in developing countries. The objectives of the study were to study the epidemiological and histological characteristics of breast cancer in female patients under 35 years of age. This was a retrospective analytical study of a series of 158 cases of breast cancer in female patients under 35 years of age, conducted at the University Teaching Hospital of Lomé between 2000 and 2015. A total of 158 cases were collected, representing 36.2% (436) of all breast cancer cases...
December 2017: Molecular and Clinical Oncology
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