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Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K

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https://www.readbyqxmd.com/read/28529314/a-critical-role-of-periostin-in-b-cell-acute-lymphoblastic-leukemia
#1
Z Ma, X Zhao, J Huang, X Jia, M Deng, D Cui, Z Du, G Fu, G Ouyang, C Xiao
Leukemia accepted article preview online, 22 May 2017. doi:10.1038/leu.2017.149.
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529313/impact-of-killer-immunoglobulin-like-receptor-and-human-leukocyte-antigen-genotypes-on-the-efficacy-of-immunotherapy-in-acute-myeloid-leukemia
#2
E Bernson, A Hallner, F E Sander, O Wilsson, O Werlenius, A Rydström, R Kiffin, M Brune, R Foà, J Aurelius, A Martner, K Hellstrand, F B Thorén
Interactions between killer-immunoglobulin-like receptors (KIRs) and their HLA class I ligands are instrumental in natural killer (NK) cell regulation and protect normal tissue from NK cell attack. Human KIR haplotypes comprise genes encoding mainly inhibitory receptors (KIR A) or activating and inhibitory receptors (KIR B). A substantial fraction of humans lack ligands for inhibitory KIRs (iKIRs), i.e. a 'missing ligand' genotype. KIR B/x and missing ligand genotypes may thus give rise to potentially autoreactive, unlicensed NK cells...
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529312/prognostic-impact-of-ikzf1-deletions-in-association-with-vincristine-dexamethasone-pulses-during-maintenance-treatment-of-childhood-acute-lymphoblastic-leukemia-on-trial-all-bfm-95
#3
L Hinze, A Möricke, M Zimmermann, S Junk, G Cario, E Dagdan, C P Kratz, V Conter, M Schrappe, M Stanulla
Leukemia accepted article preview online, 22 May 2017. doi:10.1038/leu.2017.154.
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529311/spotlight-on-pomalidomide-could-less-be-more
#4
T J Zander, S Aebi, T Pabst, C Renner, C Driessen
Leukemia accepted article preview online, 22 May 2017. doi:10.1038/leu.2017.156.
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529310/a-revisionist-history-of-adult-marrow-stem-cell-biology-or-they-forgot-about-the-discard
#5
REVIEW
P Quesenberry, L Goldberg
Leukemia accepted article preview online, 22 May 2017. doi:10.1038/leu.2017.155.
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529309/an-unusual-activating-insertion-deletion-mpl-mutant-in-primary-myelofibrosis
#6
J-P Defour, Y Hoade, A-M Reuther, A Callaway, D Ward, F Chen, S N Constantinescu, N C P Cross
Leukemia accepted article preview online, 22 May 2017. doi:10.1038/leu.2017.153.
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529308/assessing-the-thrombotic-risk-of-patients-with-essential-thrombocythemia-in-the-genomic-era
#7
REVIEW
L Falchi, H M Kantarjian, S Verstovsek
The molecular characterization of myeloproliferative neoplasms (MPN), including essential thrombocythemia (ET), has enabled deeper understanding of their pathogenesis. A driver lesion, namely, Janus kinase (JAK)2V617F, calreticulin (CALR) or myeloproliferative leukemia (MPL) gene mutation can be identified in the vast majority of patients. Each of these mutations is associated with distinct clinical features and may modulate the patients' clinical course, risk of complications, including vascular events, and survival...
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28529307/genetic-deletion-of-sost-or-pharmacological-inhibition-of-sclerostin-prevent-multiple-myeloma-induced-bone-disease-without-affecting-tumor-growth
#8
J Delgado-Calle, J Anderson, M D Cregor, K W Condon, S A Kuhstoss, L I Plotkin, T Bellido, G D Roodman
Multiple myeloma (MM) causes lytic bone lesions due to increased bone resorption and concomitant marked suppression of bone formation. Sclerostin (Scl) levels, an osteocyte-derived inhibitor of Wnt/β-catenin signaling, are elevated in MM patient sera and are increased in osteocytes in MM-bearing mice. We show here that genetic deletion of Sost, the gene encoding Scl, prevented MM-induced bone disease in an immune-deficient mouse model of early MM, and that administration of anti-Scl antibody (Scl-Ab) increased bone mass and decreases osteolysis in immune-competent mice with established MM...
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28502982/why-are-hematopoietic-stem-cells-so-sexy-on-a-search-for-developmental-explanation
#9
REVIEW
Mariusz Z Ratajczak
Evidence has accumulated that normal human and murine hematopoietic stem cells express several functional pituitary and gonadal sex hormones and that, in fact, some sex hormones, such as androgens, have been employed for many years to stimulate hematopoiesis in patients with bone marrow aplasia. Interestingly, sex hormone receptors are also expressed by leukemic cell lines and blasts. In this review I will discuss the emerging question of why hematopoietic cells express these receptors. A tempting hypothetical explanation for this phenomenon is that hematopoietic stem cells are related to subpopulation of migrating primordial germ cells...
May 15, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28496177/targeting-flt3-by-chimeric-antigen-receptor-t-cells-for-the-treatment-of-acute-myeloid-leukemia
#10
L Chen, H Mao, J Zhang, J Chu, S Devine, M A Caligiuri, J Yu
Leukemia accepted article preview online, 12 May 2017. doi:10.1038/leu.2017.147.
May 12, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28490813/leptin-receptor-antagonism-of-inkt-cell-function-a-novel-strategy-to-combat-multiple-myeloma
#11
M Favreau, E Menu, D Gaublomme, K Vanderkerken, S Faict, K Maes, E De Bruyne, S Govindarajan, M Drennan, S Van Calenbergh, X Leleu, L Zabeau, J Tavernier, K Venken, D Elewaut
A hallmark of bone marrow changes with aging is the increase in adipocyte composition, but how this impacts development of multiple myeloma (MM) is unknown. Here, we report the role of the adipokine leptin as master regulator of anti-myeloma tumor immunity by modulating the invariant natural killer T (iNKT) cell function. A marked increase in serum leptin levels and leptin receptor (LR) expression on iNKT cells in MM patients and the 5T33 murine MM model was observed. MM cells and leptin synergistically counteracted anti-tumor functionality of both murine and human iNKT cells...
May 11, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28490812/hdac3-regulates-dnmt1-expression-in-multiple-myeloma-therapeutic-implications
#12
T Harada, H Ohguchi, Y Grondin, S Kikuchi, M Sagawa, Y-T Tai, R Mazitschek, T Hideshima, K C Anderson
Epigenetic signaling pathways are implicated in tumorigenesis and therefore histone deacetylases (HDACs) represent novel therapeutic targets for cancers including multiple myeloma (MM). Although non-selective HDAC inhibitors show anti-MM activities, unfavorable side effects limit their clinical efficacy. Isoform- and/or class-selective HDAC inhibition offers the possibility to maintain clinical activity while avoiding adverse events attendant to broad non-selective HDAC inhibition. We have previously reported that HDAC3 inhibition, either by genetic knockdown or selective inhibitor BG45, abrogates MM cell proliferation...
May 11, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28490811/high-efficacy-and-safety-of-low-dose-cd19-directed-car-t-cell-therapy-in-51-refractory-or-relapsed-b-acute-lymphoblastic-leukemia-patients
#13
J Pan, J Yang, B Deng, X Zhao, X Zhang, Y Lin, Y Wu, Z Deng, Y Zhang, S Liu, T Wu, P Lu, D Lu, A H Chang, C Tong
Refractory or relapsed B lymphoblastic leukemia (B-ALL) patients have a dismal outcome with current therapy. We treated 42 primary refractory/hematological relapsed (R/R) and 9 refractory minimal residual disease by flow cytometry (FCM-MRD(+)) B-ALL patients with optimized second generation CD19-directed CAR-T cells. The CAR-T cell infusion dosages were initially ranged from 0.05 to 14 × 10(5)/kg and were eventually settled at 1 × 10(5)/kg for the most recent 20 cases. 36/40 (90%) evaluated R/R patients achieved complete remission (CR) or CR with incomplete count recovery (CRi), and 9/9 (100%) FCM-MRD(+) patients achieved MRD(-)...
May 11, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28487543/kdm6b-modulates-mapk-pathway-mediating-multiple-myeloma-cell-growth-and-survival
#14
H Ohguchi, T Harada, M Sagawa, S Kikuchi, Y-T Tai, P G Richardson, T Hideshima, K C Anderson
Recent studies have delineated cancer type-specific roles of histone 3 lysine 27 (H3K27) demethylase KDM6B/JMJD3 depending on its H3K27 demethylase activity. Here we show that KDM6B is expressed in multiple myeloma (MM); and that shRNA-mediated knockdown and CRISPR-mediated knockout of KDM6B abrogate MM cell growth and survival. TNFα or bone marrow stromal cell culture supernatants induce KDM6B, which is blocked by IKKβ inhibitor MLN120B, suggesting KDM6B is regulated by NF-κB signaling in MM cells. RNA-sequencing and subsequent ChIP-qPCR analyses reveal that KDM6B is recruited to the loci of genes encoding components of MAPK signaling pathway including ELK1 and FOS, and upregulates these genes expression without affecting H3K27 methylation level...
May 10, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28487542/abundant-and-equipotent-founder-cells-establish-and-maintain-acute-lymphoblastic-leukaemia
#15
A Elder, S Bomken, I Wilson, H J Blair, S Cockell, F Ponthan, K Dormon, D Pal, O Heidenreich, J Vormoor
High frequencies of blasts in primary acute lymphoblastic leukaemia (ALL) samples have the potential to induce leukaemia and to engraft mice. However it is unclear how individual ALL cells each contribute to drive leukaemic development in a bulk transplant and the extent to which these blasts vary functionally. We used cellular barcoding as a fate mapping tool to track primograft ALL blasts in vivo. Our results show that high numbers of ALL founder cells contribute at similar frequencies to leukaemic propagation over serial transplants, without any clear evidence of clonal succession...
May 10, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28487541/germline-samd9-mutation-in-siblings-with-monosomy-7-and-myelodysplastic-syndrome
#16
J R Schwartz, S Wang, J Ma, T Lamprecht, M Walsh, G Song, S C Raimondi, G Wu, M F Walsh, R B McGee, C Kesserwan, K E Nichols, B E Cauff, R C Ribeiro, M Wlodarski, J M Klco
Leukemia accepted article preview online, 10 May 2017. doi:10.1038/leu.2017.142.
May 10, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28484267/microrna-146a-reduces-mhc-ii-expression-via-targeting-jak-stat-signaling-in-dendritic-cells-after-stem-cell-transplantation
#17
N Stickel, K Hanke, D Marschner, G Prinz, M Köhler, W Melchinger, D Pfeifer, A Schmitt-Graeff, T Brummer, A Heine, P Brossart, D Wolf, N von Bubnoff, J Finke, J Duyster, J Ferrara, U Salzer, R Zeiser
Acute Graft-versus-host disease (GVHD) is a major immunological complication after allogeneic hematopoietic cell transplantation and a better understanding of the molecular regulation of the disease could help to develop novel targeted therapies. Here we found that a G/C polymorphism within the human microRNA-146a (miR-146a) gene of transplant-recipients, which causes reduced miR-146a levels, was strongly associated with the risk of developing severe acute GVHD (n=289). In mice, deficiency of miR-146a in the hematopoietic system or transfer of recipient-type miR-146a(-/-) dendritic cells (DCs) enhanced GVHD, while miR-146a mimic-transfected-DCs ameliorated disease...
May 9, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28484266/rna-editing-signature-during-myeloid-leukemia-cell-differentiation
#18
C Rossetti, E Picardi, M Ye, G Camilli, A M D'Erchia, L Cucina, F Locatelli, L Fianchi, L Teofili, G Pesole, A Gallo, R Sorrentino
ADARs are key proteins for hematopoietic stem cell self-renewal and for survival of differentiating progenitor cells. However, their specific role in myeloid cell maturation has been poorly investigated. Here, we show that ADAR1 is present at basal level in the primary myeloid leukemia cells obtained from patients at diagnosis as well as in myeloid U-937 and THP1 cell lines and its expression correlates with the editing levels. Upon phorbol-myristate acetate (PMA) or VitaminD3/GM-CSF-driven differentiation, both ADAR1 and ADAR2 enzymes are up-regulated, with a concomitant global increase of A-to-I RNA editing...
May 9, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28484265/jak-stat-pathway-inhibition-overcomes-il7-induced-glucocorticoid-resistance-in-a-subset-of-human-t-cell-acute-lymphoblastic-leukemias
#19
C Delgado-Martin, L K Meyer, B J Huang, K A Shimano, M S Zinter, J V Nguyen, G A Smith, J Taunton, S S Winter, J R Roderick, M A Kelliher, T M Horton, B L Wood, D Teachey, M L Hermiston
While outcomes for children with T-cell acute lymphoblastic leukemia (T-ALL) have improved dramatically, survival rates for patients with relapsed/refractory disease remain dismal. Prior studies indicate that glucocorticoid (GC) resistance is more common than resistance to other chemotherapies at relapse. Additionally, failure to clear peripheral blasts during a prednisone prophase correlates with an elevated risk of relapse in newly diagnosed patients. Here we show that intrinsic GC resistance is present at diagnosis in early thymic precursor (ETP) T-ALLs as well as in a subset of non-ETP T-ALLs...
May 9, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28484264/the-role-of-lnk-sh2b3-genetic-alterations-in-myeloproliferative-neoplasms-and-other-hematological-disorders
#20
REVIEW
N Maslah, B Cassinat, E Verger, J-J Kiladjian, L Velazquez
Malignant hematological diseases are mainly due to the occurrence of molecular abnormalities leading to the deregulation of signaling pathways essential for precise cell behavior. High resolution genome analysis using microarray and large-scale sequencing have helped identify several important acquired gene mutations that are responsible for such signaling deregulations across different hematological malignancies. In particular, the genetic landscape of classical myeloproliferative neoplasms (MPNs) has been in large part completed with the identification of driver mutations (targeting the cytokine receptor/JAK2 pathway) that determine MPN phenotype, as well as additional mutations mainly affecting the regulation of gene expression (epigenetics or splicing regulators) and signaling...
May 9, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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