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BCL2 lymphoma

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https://www.readbyqxmd.com/read/28801451/adult-high-grade-b-cell-lymphoma-with-burkitt-lymphoma-signature-genomic-features-and-potential-therapeutic-targets
#1
Alyssa Bouska, Chengfeng Bi, Waseem Lone, Weiwei Zhang, Ambreen Kedwaii, Tayla Heavican, Cynthia M Lachel, Jiayu Yu, Roberto Ferro, Nanees Eldorghamy, Timothy C Greiner, Julie Vose, Dennis D Weisenburger, Randy D Gascoyne, Andreas Rosenwald, German Ott, Elias Campo, Lisa M Rimsza, Elaine S Jaffe, Rita M Braziel, Reiner Siebert, Rodney R Miles, Sandeep Dave, Anupama Reddy, Jan Delabie, Louis M Staudt, Joo Y Song, Timothy W McKeithan, Kai Fu, Michael Green, Wing C Chan, Javeed Iqbal
The adult high-grade B-cell lymphomas sharing molecular features with Burkitt lymphoma (BL) are highly aggressive lymphomas with poor clinical outcome. High-resolution structural and functional genomic analysis of adult Burkitt lymphoma (BL) and high-grade B-cell lymphoma with BL gene-signature (adult-mBL), revealed the MYC-ARF-p53 axis as the primary deregulated pathway. Adult-mBL had either unique or more frequent genomic aberrations (del13q14, del17p, gain8q24 and gain18q21) compared with pediatric-mBL, but shared commonly mutated genes...
August 11, 2017: Blood
https://www.readbyqxmd.com/read/28800008/epstein-barr-virus-infection-can-be-a-secondary-event-in-b-cell-lymphomas-a-review-of-338-cases-and-a-novel-finding-of-zonal-eber-tumor-cells-showing-features-of-progression-from-underlying-ebv-negative-lymphoma
#2
Ira J Miller
Cases of B-cell lymphoma over an 8-year interval with diagnosis of EBER positivity were retrieved from archives and reviewed for classification and pattern of Epstein Barr Virus (EBV) expression. Of 46 cases that were EBV early RNA (EBER)+ by in situ hybridization staining, 7 had nonuniform staining among the neoplastic cells. Four of those cases showed a uniform admixture of EBER+ and EBER- tumor cells, compatible with the prevailing theory of episomal EBV loss with cell replication. Three cases of lymphomas showed a partial and zonal pattern and other features suggest that EBV infection occurred after the lymphoma was already established...
August 9, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28776574/increased-myc-copy-number-is-an-independent-prognostic-factor-in-patients-with-diffuse-large-b-cell-lymphoma
#3
Andrés E Quesada, L Jeffrey Medeiros, Parth A Desai, Pei Lin, Jason R Westin, Huda M Hawsawi, Peng Wei, Guilin Tang, Adam C Seegmiller, Nishitha M Reddy, C Cameron Yin, Wei Wang, Jie Xu, Roberto N Miranda, Zhuang Zuo, Shaoying Li
Patients with double-hit or triple-hit lymphoma have a significantly worse prognosis compared to patients with diffuse large B-cell lymphoma without MYC rearrangement. However, the prognostic importance of extra copies of MYC, BCL2, or BCL6 has not been fully explored. We studied 663 patients with de novo diffuse large B-cell lymphoma in whom the status of MYC/8q24, BCL2/18q21, and BCL6/3q27 were assessed by fluorescence in situ hybridization. Cases of double or triple extra copy lymphoma were defined by the presence of increased MYC copies and increased BCL2 and/or BCL6 copies or rearrangement...
August 4, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28771100/rare-transformation-to-double-hit-lymphoma-in-waldenstrom-s-macroglobulinemia
#4
Onyemaechi N Okolo, Ariel C Johnson, Seongseok Yun, Stacy J Arnold, Faiz Anwer
Waldenström macroglobulinemia (WM) is a lymphoproliferative lymphoma that is characterized by monoclonal immunoglobulin M (IgM) protein and bone marrow infiltration. Its incidence is rare and rarer still is its ability to transform to a B-cell lymphoma, particularly the aggressive diffuse large B-cell lymphoma, which bodes a poor prognosis. When transformation includes mutations of MYC, BCL-2 and/or BCL-6, it is known as a 'double hit' or 'triple hit' lymphoma respectively. This paper presents a rare case of WM with mutations positive for MYC and BCL2, making it a case of double hit B-cell lymphoplasmacytic lymphoma with plasmatic differentiation without morphological transformation to aggressive histology like DLBCL...
August 3, 2017: Immunotherapy
https://www.readbyqxmd.com/read/28771060/does-double-hit-follicular-lymphoma-with-translocations-of-myc-and-bcl2-change-the-definition-of-transformation
#5
Hiroki Katsushima, Noriko Fukuhara, Sachiko Konosu-Fukaya, Masahito Himuro, Yuko Kitawaki, Satoshi Ichikawa, Kenichi Ishizawa, Hironobu Sasano, Hideo Harigae, Ryo Ichinohasama
No abstract text is available yet for this article.
August 3, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28769046/kaiso-protects-human-umbilical-vein-endothelial-cells-against-apoptosis-by-differentially-regulating-the-expression-of-b-cell-cll-lymphoma-2-family-members
#6
Xiaodong Xue, Jian Zhang, Huai Lan, Yinli Xu, Huishan Wang
Endothelial cell injury can promote the development of various cardiovascular diseases, thus, fully understanding the mechanisms underlying the maintenance of vascular endothelial cell homoeostasis may help prevent and treat cardiovascular disease. Kaiso, a zinc finger and BTB domain containing transcription factor, is key to embryonic development and cancer, but how Kaiso interacts with vascular endothelium is not fully understood. We report that Kaiso has an anti-apoptotic function in human umbilical vein endothelial cells (HUVECs) and human microvascular endothelial cells (HMEC-1s)...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28767701/cardiac-directed-expression-of-a-catalytically-inactive-adenylyl-cyclase-6-protects-the-heart-from-sustained-%C3%AE-adrenergic-stimulation
#7
Mei Hua Gao, N Chin Lai, Dimosthenis Giamouridis, Young Chul Kim, Tracy Guo, H Kirk Hammond
OBJECTIVES: Increased expression of adenylyl cyclase type 6 (AC6) has beneficial effects on the heart through cyclic adenosine monophosphate (cAMP)-dependent and cAMP-independent pathways. We previously generated a catalytically inactive mutant of AC6 (AC6mut) that has an attenuated response to β-adrenergic receptor stimulation, and, consequently, exhibits reduced myocardial cAMP generation. In the current study we test the hypothesis that cardiac-directed expression of AC6mut would protect the heart from sustained β-adrenergic receptor stimulation, a condition frequently encountered in patients with heart failure...
2017: PloS One
https://www.readbyqxmd.com/read/28766546/-diffuse-large-b-cell-lymphoma-with-concomitant-c-myc-and-bcl6-gene-rearrangements-with-primary-skin-involvement-a-case-report-and-a-review-of-literature
#8
N G Gabeeva, D A Koroleva, A V Belyaeva, N G Chernova, L A Kuzmina, A B Sudarikov, T N Obukhova, A M Kovrigina, E E Zvonkov, V G Savchenko
Double-hit lymphoma (DHL) is a rare aggressive B-cell lymphoma with concomitant c-MYC, BCL2 or BCL6 gene rearrangements, which is characterized by the high frequency of extranodal lesions and by resistance to chemotherapy. The median survival does not exceed 18 months in patients with this disease. The majority of DHL is represented by с-MYC/BCL2 cases. The combination of c-MYC/BCL6 occurs rarely (5-8%). The paper describes a case of DHL with concomitant c-MYC and BCL6 gene rearrangements, which mimics diffuse large B-cell lymphoma, leg-type...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28765546/integrative-whole-genome-sequence-analysis-reveals-roles-of-regulatory-mutations-in-bcl6-and-bcl2-in-follicular-lymphoma
#9
Kirill Batmanov, Wei Wang, Magnar Bjørås, Jan Delabie, Junbai Wang
The contribution of mutations in regulatory regions to tumorigenesis has been the subject of many recent studies. We propose a new framework for integrative analysis of genome-wide sequencing data by considering diverse genetic information. This approach is applied to study follicular lymphoma (FL), a disease for which little is known about the contribution of regulatory gene mutations. Results from a test FL cohort revealed three novel highly recurrent regulatory mutation blocks near important genes implicated in FL, BCL6 and BCL2...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28749548/c-myc-positive-relapsed-and-refractory-diffuse-large-b-cell-lymphoma-impact-of-additional-hits-and-outcomes-with-subsequent-therapy
#10
Narendranath Epperla, Kami J Maddocks, Mohammed Salhab, Julio C Chavez, Nishitha Reddy, Reem Karmali, Elvira Umyarova, Veronika Bachanova, Cristiana Costa, Martha Glenn, Oscar Calzada, Ana C Xavier, Zheng Zhou, Nasheed M Hossain, Francisco J Hernandez-Ilizaliturri, Zeina Al-Mansour, Stefan K Barta, Saurabh Chhabra, Frederick Lansigan, Amitkumar Mehta, Michael V Jaglal, Andrew Evans, Christopher R Flowers, Jonathon B Cohen, Timothy S Fenske, Mehdi Hamadani, Luciano J Costa
BACKGROUND: The impact of MYC proto-oncogene, basic helix-loop-helix (MYC) translocations (with or without additional rearrangements involving the B-cell lymphoma 2 [BCL2] or BCL6 genes) on the response to salvage therapy and survival in patients with diffuse large B-cell lymphoma (DLBCL) who experience primary treatment failure is not well defined. METHODS: This was a multicenter, retrospective study of the impact of MYC, BCL2, and BCL6 rearrangements in patients with DLBCL who failed to achieve complete remission or relapsed within 6 months after they completed upfront chemoimmunotherapy...
July 27, 2017: Cancer
https://www.readbyqxmd.com/read/28748558/aggressive-b-cell-lymphomas-in-the-update-of-the-4th-edition-of-the-world-health-organization-classification-of-haematopoietic-and-lymphatic-tissues-refinements-of-the-classification-new-entities-and-genetic-findings
#11
REVIEW
German Ott
The update of the 4th edition of the World Health Organization Classification of Haematopoietic and Lymphatic Tissues portends important new findings and concepts in the diagnosis, classification and biology of lymphomas. This review summarizes the basic concepts and cornerstones of the classification of aggressive B-cell lymphomas and details the major changes. Of importance, there is a new concept of High-grade B-cell lymphomas (HGBL), partly replacing the provisional entity of B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma (DLBCL) and Burkitt lymphoma, the so-called grey zone lymphomas...
July 27, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28739740/global-analysis-of-mirna-mrna-interaction-network-in-breast-cancer-with-brain-metastasis
#12
Zhixin Li, Zhiqiang Peng, Siyu Gu, Junfang Zheng, Duiping Feng, Qiong Qin, Junqi He
BACKGROUND: MicroRNAs (miRNAs) have been linked to a number of cancer types including breast cancer. The rate of brain metastases is 10-30% in patients with advanced breast cancer which is associated with poor prognosis. The potential application of miRNAs in the diagnostics and therapeutics of breast cancer with brain metastasis is an area of intense interest. In an initial effort to systematically address the differential expression of miRNAs and mRNAs in primary breast cancer which may provide clues for early detection of brain metastasis, we analyzed the consequent changes in global patterns of gene expression in Gene Expression Omnibus (GEO) data set obtained by microarray from patients with in situ carcinoma and patients with brain metastasis...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28731262/nephroprotective-effects-of-anthocyanin-from-the-fruits-of-panax-ginseng-gfa-on-cisplatin-induced-acute-kidney-injury-in-mice
#13
Zhen-Lan Qi, Zi Wang, Wei Li, Jin-Gang Hou, Ying Liu, Xin-Dian Li, Hui-Ping Li, Ying-Ping Wang
Cisplatin is an effective anticancer chemotherapeutic agent, but the use of cisplatin in the clinic is severely limited by side effects. Nephrotoxicity is a major factor that contributes to the side effects of cisplatin chemotherapy. The aim of this research was to survey the nephroprotective effects of anthocyanin from the fruits of Panax ginseng (GFA) in a murine model of cisplatin-induced acute kidney injury. We observed that pretreatment with GFA attenuated cisplatin-induced elevations in blood urea nitrogen and creatinine levels and histopathological injury induced by cisplatin...
July 21, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28730642/myc-expression-and-translocation-analyses-in-low-grade-and-transformed-follicular-lymphoma
#14
S M Aukema, R van Pel, I Nagel, S Bens, R Siebert, S Rosati, E van den Berg, A G Bosga-Bouwer, R E Kibbelaar, M Hoogendoorn, G W van Imhoff, J C Kluin-Nelemans, P M Kluin, M Nijland
Low grade follicular lymphoma (FL1/2) has an annual risk of transformation of approximately 3% which is associated with aberrations in CDKN2A/B, TP53 and MYC. Like in DLBCL high MYC expression in transformed FL (tFL) might predict a MYC breakpoint. We quantified MYC expression by immunohistochemistry and digital analysis in 41 paired biopsies from 20 patients with FL1/2 with subsequent transformation and in 4 isolated biopsies of tFL. As controls 28 biopsies of FL1/2 without transformation (median follow up 105 months) and 9 FL3A/B were analyzed...
July 21, 2017: Histopathology
https://www.readbyqxmd.com/read/28716711/epigenetic-silencing-of-mirna-143-regulates-apoptosis-by-targeting-bcl2-in-human-intervertebral-disc-degeneration
#15
Kangcheng Zhao, Yukun Zhang, Kang Liang, Yu Song, Kun Wang, Shuai Li, Xinghuo Wu, Wenbin Hua, Zengwu Shao, Shuhua Yang, Cao Yang
Accumulating evidence indicates that microRNAs can regulate the apoptosis of various cells. Apoptosis of nucleus pulposus cells plays an important role in the progression of intervertebral disc degeneration. The aim of this study is to investigate whether microRNA-143 (miRNA-143) is involved in the progression of intervertebral disc degeneration. In this study, the expression of miRNA-143 and its biological modulatory effects were examined. Messenger RNA and protein expression of miRNA-143 and B-cell lymphoma-2 (BCL2) in both normal and degenerative disc tissues was determined by using RT-PCR and western-blot assays...
July 14, 2017: Gene
https://www.readbyqxmd.com/read/28712322/is-now-the-time-for-molecular-driven-therapy-for-diffuse-large-b-cell-lymphoma
#16
Alice Di Rocco, Federico De Angelis, Michela Ansuinelli, Robin Foà, Maurizio Martelli
Recent genetic and molecular discoveries regarding alterations in diffuse large B-cell lymphoma (DLBCL) deeply changed the approach to this lymphoproliferative disorder. Novel additional predictors of outcomes and new therapeutic strategies are being introduced to improve outcomes. Areas covered: This review aims to analyse the recent molecular discoveries in DLBCL, the rationale of novel molecular driven treatments and their impact on DLBCL prognosis, especially in ABC-DLBCL and High Grade B Cell Lymphoma...
July 25, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28711572/emerging-strategies-in-treating-double-hit-lymphomas
#17
REVIEW
Chadi Nabhan, Anthony R Mato
Double hit lymphomas (DHLs) are a new category in the World Health Organization newest classification for lymphoid malignancies. DHL encompasses various histologies of lymphomas where the MYC oncogene and either BCL2 or BCL6 oncogenes are present concomitantly. Several observational studies and retrospective series have demonstrated that patients with DHL carry a poor prognosis and respond less and for a shorter duration to standard R-CHOP (rituximab, cyclophosphamide, vincristine, adriamycin, and prednisone)...
June 21, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28706485/the-combination-of-rituximab-and-bendamustine-as-first-line-treatment-is-highly-effective-in-the-eradicating-minimal-residual-disease-in-follicular-lymphoma-an-italian-retrospective-study
#18
Sara Galimberti, Elena Ciabatti, Giacomo Ercolano, Susanna Grassi, Francesca Guerrini, Nadia Cecconi, Martina Rousseau, Giulia Cervetti, Francesco Mazziotta, Lorenzo Iovino, Franca Falzetti, Flavio Falcinelli, Alberto Bosi, Luigi Rigacci, Sofia Kovalchuk, Daniele Vallisa, Lucia Macchia, Eugenio Ciancia, Mario Petrini
R-Bendamustine is an effective treatment for follicular lymphoma (FL). Previous large trials demonstrated the prognostic role of the molecular minimal residual disease (MRD) during the most frequently adopted chemotherapeutic regimens, but there are not yet conclusive data about the effect of combination of rituximab (R) and bendamustine in terms of MRD clearance. Thus, the aim of this retrospective study was to assess if and in what extent the combination of rituximab and bendamustine would exert a significant reduction of the molecular disease in 48 previously untreated FL patients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28693259/rktg-overexpression-inhibits-proliferation-and-induces-apoptosis-of-human-leukemia-cells-via-suppression-of-the-erk-and-pi3k-akt-signaling-pathways
#19
Yingdong Xu, Na Deng, Xiaoou Wang, Yinghui Chen, Guiji Li, Hua Fan
Raf kinase trapping to Golgi (RKTG) is reported to be a tumor suppressor in a number of solid tumors due to its negative modulation of the Ras/Raf/mitogen-activated protein kinase kinase/extracellular signal-regulated kinase (ERK) pathways. However, the role of RKTG in the progression of leukemia remains unknown. In the present study, a human leukemia U937 cell line overexpressing RKTG was established, and the effect of RKTG on proliferation, cell cycle and apoptosis of human leukemia cells was analyzed. The results of the present study demonstrated that exogenous overexpression of RKTG significantly inhibited cell proliferation, which was accompanied by cell cycle arrest...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28693188/consecutive-stimulation-of-hbsag-promotes-the-viability-of-the-human-b-lymphoblastoid-cell-line-im-9-through-regulating-the-sirt1-nf-%C3%AE%C2%BAb-pathway
#20
Jian Bo, Xiaojuan Wang, Jie Li, Wenqing Wang, Jinqian Zhang
Patients with chronic HBV infection have been reported to suffer a significantly increased risk of NHL, but the underlying mechanisms remain to be clearly explained. The aim of the present study was to clarify the relationship between chronic HBV infection and NHL development. Fluorescence-activated cell sorting, Annexin V/7-aminoactinomycin D staining and MTS assay were used to analyze the rate of apoptosis and cell viability. In addition, western blotting was used to detect protein expression. The effects of the activator of SIRT1, SRT1720, and the inhibitor of SIRT1, nicotinamide, were also analyzed...
July 2017: Oncology Letters
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