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Plasma cell leukemia

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https://www.readbyqxmd.com/read/28920465/fish-oil-derived-eicosapentaenoic-acid-decreases-survivin-expression-and-induces-wt-p53-accumulation-with-caspase-3-activation-in-acute-lymphoblastic-leukemia-cells
#1
M R Sam, M Esmaeillou, S Sam, M A Shokrgozar
BACKGROUND: Defects in modulating wild-type (wt) p53 and survivin are associated with a resistant disease in acute lymphoblastic leukemia (ALL). Yet, no wt-p53 and survivin modulating drugs have been approved for clinical application in ALL. Here, we investigated if in vitro eicosapentaenoic acid (EPA) concentrations equal to human plasma levels are able to target wt-p53 and survivin. METHODS: Wt-p53 Molt-4 cells (ALL cell line) were treated with 50, 100, 150, and 200 µM of EPA after which cell number, viability, proliferation rate, survivin expression, wt-p53 accumulation, caspase-3 activation, and apoptosis were evaluated...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28919785/biomarker-analysis-and-clinical-relevance-of-tk1-on-the-cell-membrane-of-burkitt-s-lymphoma-and-acute-lymphoblastic-leukemia
#2
Evita G Weagel, Wei Meng, Michelle H Townsend, Edwin J Velazquez, Rachel A Brog, Michael W Boyer, K Scott Weber, Richard A Robison, Kim L O'Neill
TK1 is an enzyme involved in DNA synthesis and repair. TK1 is usually found elevated in cancer patients' serum, which makes it a useful tumor proliferation biomarker that strongly correlates with cancer stage, metastatic capabilities, and recurrence risk. In this study, we show that TK1 is upregulated and localizes on the plasma membrane of Burkitt's lymphoma, acute promyelocytic leukemia, T cell leukemia, and acute lymphoblastic leukemia (ALL). Using flow cytometry, we confirmed that TK1 localizes on the surface of Raji, HL60, and Jurkat cell lines and on ALL clinical samples...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28903568/circulating-plasma-cells-in-monoclonal-gammopathies
#3
R Bezdekova, M Penka, R Hájek, L Rihova
BACKGROUND: Monoclonal gammopathies are characterized by presence of clonal plasma cells in the bone marrow, although peripheral blood circulating plasma cells can be found in a significant proportion of patients. The number of circulating plasma cells is an independent prognostic marker associated with shorter survival, but it can also help to predict early relapse. The reason and mechanism of plasma cell expansion from the bone marrow to enter peripheral blood is still not entirely clear, but possible changes in the expression of adhesion molecules are probably involved...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28884441/inhibition-of-retroviral-gag-assembly-by-non-silencing-mirnas-promotes-autophagic-viral-degradation
#4
Na Qu, Zhao Ma, Mengrao Zhang, Muaz N Rushdi, Christopher J Krueger, Antony K Chen
We recently reported an unconventional mechanism by which miRNAs inhibit HIV-1 viral production. This occurs when miRNAs bind nonspecifically to the viral structural protein Gag, interfering with viral RNA-mediated Gag assembly at the plasma membrane. Consequently, misassembled viral complexes are redirected into the endocytic pathway where they are delivered to lysosomes for degradation. In this study, we demonstrate that autophagy is a critical mediator of the viral degradation pathway and that this pathway is not HIV-1 specific...
September 7, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28871936/xanthoma-like-skin-changes-in-an-elderly-woman-with-a-normal-lipid-profile
#5
Piotr Nockowski, Zdzisław Woźniak, Adam Reich, Joanna Maj
Dear Editor, An 83-year-old woman developed yellow-brownish infiltrates, nodules, and tumors mimicking xanthomas, mostly involving the periorbital and chest area within three months (Figure 1). She had no abnormalities in serum cholesterol or triglycerides levels. A detailed laboratory analysis revealed the presence of mild monoclonal gammopathy with a presence of immunoglobulin G (IgG) kappa light chains; however, according to hematologist consultation, it did not require medical intervention. Imaging assessment and ultrasound examination did not show any specific involvement of internal organs...
July 2017: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28870833/multivalent-interactions-between-streptavidin-based-pretargeting-fusion-proteins-and-cell-receptors-impede-efficient-internalization-of-biotinylated-nanoparticles
#6
Christina L Parker, Qi Yang, Bing Yang, Justin D McCallen, Steven I Park, Samuel K Lai
Pretargeting represents a promising strategy to enhance delivery of nanoparticles. The strategy involves first introducing bispecific antibodies or fusion proteins (BFP) that can bind specific epitopes on target cells, which in turn can capture subsequently administered effector molecules, such as radionuclides or drug-loaded nanoparticles. Nevertheless, it remains unclear whether BFP that bind slowly- or non-internalizing epitopes on target cells can facilitate efficient intracellular delivery. Here, we investigated the cellular uptake of biotin-functionalized nanoparticles with streptavidin-scFv against TAG-72, a membrane protein on Jurkat T-cell leukemia cell...
September 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28866404/fresh-water-marine-and-terrestrial-cyanobacteria-display-distinct-allergen-characteristics
#7
Naama Lang-Yona, Anna Theresa Kunert, Lothar Vogel, Christopher Johannes Kampf, Iris Bellinghausen, Joachim Saloga, Anne Schink, Kira Ziegler, Kurt Lucas, Detlef Schuppan, Ulrich Pöschl, Bettina Weber, Janine Fröhlich-Nowoisky
During the last decades, global cyanobacteria biomass increased due to climate change as well as industrial usage for production of biofuels and food supplements. Thus, there is a need for thorough characterization of their potential health risks, including allergenicity. We therefore aimed to identify and characterize similarities in allergenic potential of cyanobacteria originating from the major ecological environments. Different cyanobacterial taxa were tested for immunoreactivity with IgE from allergic donors and non-allergic controls using immunoblot and ELISA...
August 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28864336/analysis-of-transfusion-related-acute-lung-injury-and-possible-transfusion-related-acute-lung-injury-reported-to-the-french-hemovigilance-network-from-2007-to-2013
#8
REVIEW
Georges Andreu, Karim Boudjedir, Jean-Yves Muller, Elodie Pouchol, Yves Ozier, Guillaume Fevre, Chantal Gautreau, Jean-François Quaranta, Christian Drouet, Claire Rieux, Paul-Michel Mertes, Benoit Clavier, Monique Carlier, Imad Sandid
Using the French Hemovigilance Network database from 2007 to 2013, we provide information on demographics, incidence, and risk factors of reported transfusion-related acute lung injury (TRALI) and possible TRALI, analyze TRALI mitigation efforts for fresh frozen plasma and platelet concentrates, and consider the impact of platelet additive solutions on TRALI incidence. We applied the Toronto consensus conference definitions for TRALI and possible TRALI. Two TRALI subgroups were considered: "antibody positive" when a donor has human leukocyte antigen (class I or II) and/or human neutrophil antigen antibodies and the recipient has cognate antigen, and "antibody negative" when immunological investigation is negative or not done...
July 15, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28864289/phase-1-clinical-trial-of-adoptive-immunotherapy-using-off-the-shelf-activated-natural-killer-cells-in-patients-with-refractory-and-relapsed-acute-myeloid-leukemia
#9
Michael Boyiadzis, Mounzer Agha, Robert L Redner, Alison Sehgal, Annie Im, Jing-Zhou Hou, Rafic Farah, Kathleen A Dorritie, Anastasios Raptis, Seah H Lim, Hong Wang, Natalia Lapteva, Zhuyong Mei, Lisa H Butterfield, Cliona M Rooney, Theresa L Whiteside
BACKGROUND AIMS: Activated NK cells (aNK) generated by expansion of a human interleukin-2-dependent NK cell line (NK-92) were shown to mediate strong anti-leukemia activity. This phase 1 study evaluated feasibility, safety, and activity of aNK cells adoptively transferred to patients with refractory/relapsed acute myeloid leukemia (AML). In addition, effects of these aNK cells on the patient's immune system were evaluated. METHODS: Two cell-dose levels (1 × 10(9) cells/m(2) and 3 × 10(9) cells/m(2)) were used...
August 29, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28858629/selective-expression-of-the-transcription-elongation-factor-ell3-in-b-cells-prior-to-ell2-drives-proliferation-and-survival
#10
Lou-Ella M M Alexander, January Watters, Jessica A Reusch, Michelle Maurin, Brook S Nepon-Sixt, Katerina Vrzalikova, Mark G Alexandrow, Paul G Murray, Kenneth L Wright
B cell activation is dependent on a large increase in transcriptional output followed by focused expression on secreted immunoglobulin as the cell transitions to an antibody producing plasma cell. The rapid transcriptional induction is facilitated by the release of poised RNA pol II into productive elongation through assembly of the super elongation complex (SEC). We report that a SEC component, the Eleven -nineteen Lysine-rich leukemia (ELL) family member 3 (ELL3) is dynamically up-regulated in mature and activated human B cells followed by suppression as B cells transition to plasma cells in part mediated by the transcription repressor PRDM1...
August 28, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28845081/soluble-cd14-as-a-diagnostic-and-prognostic-biomarker-in-hematological-patients-with-febrile-neutropenia
#11
Sini Korpelainen, Carina Intke, Sari Hämäläinen, Esa Jantunen, Auni Juutilainen, Kari Pulkki
OBJECTIVE: Elevated levels of a cell surface glycoprotein, soluble cluster of differentiation 14 (sCD14), have been observed in patients with sepsis. Only scarce data are available on sCD14 in hematological patients with chemotherapy-induced febrile neutropenia. The study aim was to investigate sCD14 as an early biomarker in febrile neutropenia after intensive chemotherapy to detect a rapidly deteriorating clinical course early enough to avoid serious infectious complications. PATIENTS AND METHODS: This prospective study included 87 adult hematological patients at the start of febrile neutropenia after intensive chemotherapy for acute myeloid leukemia or after autologous stem cell transplantation...
2017: Disease Markers
https://www.readbyqxmd.com/read/28841236/phase-1-dose-escalation-multicenter-trial-of-pracinostat-alone-and-in-combination-with-azacitidine-in-patients-with-advanced-hematologic-malignancies
#12
Yasmin M Abaza, Tapan M Kadia, Elias J Jabbour, Marina Y Konopleva, Gautam Borthakur, Alessandra Ferrajoli, Zeev Estrov, William G Wierda, Ana Alfonso, Toh Han Chong, Charles Chuah, Liang-Piu Koh, Boon-Cher Goh, Julie E Chang, Daniel E Durkes, Maria Cielo Foudray, Hagop M Kantarjian, Xiao Qin Dong, Guillermo Garcia-Manero
BACKGROUND: Pracinostat is a potent histone deacetylase inhibitor with antitumor activity in both solid tumor and acute myeloid leukemia (AML) cell lines. Pracinostat is reported to have modest clinical activity in patients with advanced solid tumors. Given the higher preclinical sensitivity of hematologic malignancies to pracinostat, the authors conducted a phase 1 study to assess the safety, maximum tolerated dose, recommended phase 2 dose, efficacy, pharmacokinetics, and pharmacodynamics of pracinostat in patients with advanced hematological malignancies...
August 25, 2017: Cancer
https://www.readbyqxmd.com/read/28830598/do-immunoglobulin-g-and-immunoglobulin-e-anti-l-asparaginase-antibodies-have-distinct-implications-in-children-with-acute-lymphoblastic-leukemia-a-cross-sectional-study
#13
Gabriela Galindo-Rodríguez, José C Jaime-Pérez, Mario C Salinas-Carmona, Sandra N González-Díaz, Ángeles Castro-Corona, Raúl Cavazos-González, Humberto Treviño-Villarreal, Alberto C Heredia-Salazar, David Gómez-Almaguer
BACKGROUND: l-Asparaginase is essential in the treatment of childhood acute lymphoblastic leukemia. If immunoglobulin G anti-l-asparaginase antibodies develop, they can lead to faster plasma clearance and reduced efficiency as well as to hypersensitivity reactions, in which immunoglobulin E can also participate. This study investigated the presence of immunoglobulin G and immunoglobulin E anti-l-asparaginase antibodies and their clinical associations. METHODS: Under 16-year-old patients at diagnosis of B-cell acute lymphoblastic leukemia confirmed by flow cytometry and treated with a uniform l-asparaginase and chemotherapy protocol were studied...
July 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/28811071/biological-evaluation-of-2-pyrazolinyl-1-carbothioamide-derivatives-against-hct116-human-colorectal-cancer-cell-lines-and-elucidation-on-qsar-and-molecular-binding-modes
#14
Beom Soo Kim, Soon Young Shin, Seunghyun Ahn, Dongsoo Koh, Young Han Lee, Yoongho Lim
In the search of compounds exhibiting anticancer activity, 37 derivatives of 2-pyrazolinyl-1-carbothioamide were designed and synthesized. Clonogenic cell survival assays were adapted to measure the cytotoxicities of the synthetic derivatives against HCT116 human colon cancer cell lines. Half-maximal cell growth inhibitory concentrations (GI50) ranged from 0.49 to 41.22µM. The compound with the lowest GI50 value, 3-(2-hydroxy-4,5-dimethoxyphenyl)-5-(naphthalen-1-yl)-N-(3,4,5-trimethoxyphenyl)-pyrazolinyl-1-carbothioamide, was subjected to further biological studies, including cell viability and apoptosis assays to examine levels of annexin-V in the outer plasma membrane layer and poly ADP-ribose polymerase cleavage...
August 4, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28797508/hematopoietic-tumors-primarily-presenting-in-bone
#15
REVIEW
Arjen H G Cleven, Pancras C W Hogendoorn
Hematologic neoplasms that primarily present in bone are rare; this article describes the most common examples of hematologic tumors primarily presenting in bone, including plasma cell myeloma, solitary plasmacytoma of bone, primary non-Hodgkin lymphoma of bone, acute lymphoblastic leukemia/lymphoma, and Langerhans cell histiocytosis. The macroscopic and microscopic features, differential diagnosis, diagnostic workup, and prognosis of all these different entities are discussed, with special emphasis on common differential diagnosis...
September 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28760306/high-risk-multiple-myeloma-definition-and-management
#16
REVIEW
Nisha S Joseph, Silvia Gentili, Jonathan L Kaufman, Sagar Lonial, Ajay K Nooka
The prognosis of patients with multiple myeloma has significantly improved after the introduction of novel concepts of immunomodulation and proteasome inhibition in myeloma therapies. In conjunction with the use of high-dose therapy and autologous stem cell transplantation, these newer antimyeloma agents facilitated the augmentation of deeper responses and as a result, enhanced survival outcomes. Despite mounting clinical evidence that novel therapies may mitigate the poor prognostic impact of some predictors historically considered "harbingers of doom" in myeloma such as t(4;14), the benefit of these advances is less evident in patients who present with genetically defined high-risk features such as presence of chromosomal abnormalities del17p, t(14;16), or t(14;20), or among patients presenting with plasma cell leukemia...
July 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28758008/bilateral-extramedullary-adrenal-plasmacytoma-case-report-and-review-of-the-literature
#17
REVIEW
Philip J Townend, Gabriel Kraus, Luke Coyle, David Nevell, Anton Engelsman, Stan B Sidhu
Extramedullary plasmacytoma (EMP) accounts for only 3% of plasma cell malignancies; others include multiple myeloma, plasma cell leukemia and solitary plasmacytoma of bone. The majority of EMPs are found in the upper respiratory tract. Other sites include the GI tract, bladder, CNS, thyroid, breast, testes, parotid gland, lymph nodes and skin. There are eight cases in the literature of adrenal plasmacytoma, however, only two were bilateral. We describe our recent experience of bilateral adrenal plasmacytoma and review of the literature...
May 2017: International Journal of Endocrine Oncology
https://www.readbyqxmd.com/read/28754746/tumor-derived-exosomes-modulate-pd-l1-expression-in-monocytes
#18
Franziska Haderk, Ralph Schulz, Murat Iskar, Laura Llaó Cid, Thomas Worst, Karolin V Willmund, Angela Schulz, Uwe Warnken, Jana Seiler, Axel Benner, Michelle Nessling, Thorsten Zenz, Maria Göbel, Jan Dürig, Sven Diederichs, Jérôme Paggetti, Etienne Moussay, Stephan Stilgenbauer, Marc Zapatka, Peter Lichter, Martina Seiffert
In chronic lymphocytic leukemia (CLL), monocytes and macrophages are skewed toward protumorigenic phenotypes, including the release of tumor-supportive cytokines and the expression of immunosuppressive molecules such as programmed cell death 1 ligand 1 (PD-L1). To understand the mechanism driving protumorigenic skewing in CLL, we evaluated the role of tumor cell-derived exosomes in the cross-talk with monocytes. We carried out RNA sequencing and proteome analyses of CLL-derived exosomes and identified noncoding Y RNA hY4 as a highly abundant RNA species that is enriched in exosomes from plasma of CLL patients compared with healthy donor samples...
July 28, 2017: Science Immunology
https://www.readbyqxmd.com/read/28751289/a-new-case-of-ige-multiple-myeloma-with-review-of-literature
#19
Guillaume Vignon, Anne Sophie Cognée, François Carrere, Isabelle Masson, Florence Borde, Pierre Frédéric Augereau, Philippe Aucher, Franck Lellouche
IgE myeloma is an extremely rare disease characterized by frequent plasma cell leukemia, little monoclonal-spike on electrophoresis, an high incidence of t(11;14) translocation and a worse survival than those with common myelomas. We report here a new case of IgE myeloma and discuss clinical presentation, biological features and therapeutic option.
August 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28745329/involvement-of-maf-spp1-axis-in-the-development-of-bone-marrow-fibrosis-in-pmf-patients
#20
S Ruberti, E Bianchi, P Guglielmelli, S Rontauroli, G Barbieri, L Tavernari, T Fanelli, R Norfo, V Pennucci, G C Fattori, C Mannarelli, N Bartalucci, B Mora, L Elli, M A Avanzini, C Rossi, S Salmoiraghi, R Zini, S Salati, Z Prudente, V Rosti, F Passamonti, A Rambaldi, S Ferrari, E Tagliafico, A M Vannucchi, R Manfredini
Primary Myelofibrosis (PMF) is a myeloproliferative neoplasm characterized by hyperplastic megakaryopoiesis and myelofibrosis. We recently described the upregulation of MAF in PMF CD34+ hematopoietic progenitor cells (HPCs) compared to healthy donor. Here we demonstrated that MAF is also upregulated in PMF compared to Essential Thrombocytemia (ET) and Polycytemia Vera (PV) HPCs. MAF overexpression and knockdown experiments shed some light into the role of MAF in PMF pathogenesis, by demonstrating that MAF favours the megakaryocyte and monocyte/macrophage commitment of HPCs and leads to the increased expression of proinflammatory and profibrotic mediators...
July 12, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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