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Current Opinion in Hematology

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https://www.readbyqxmd.com/read/28441150/long-non-coding-rnas-in-leukemia-biology-and-clinical-impact
#1
Tim Lammens, Kaat Durinck, Annelynn Wallaert, Frank Speleman, Pieter Van Vlierberghe
PURPOSE OF REVIEW: Over the last years, long non-coding RNAs (lncRNAs) have emerged as putative regulators of malignant hematopoietic development. Here, we review recent literature on the involvement of lncRNAs in leukemia, including their role in driving or sustaining disease and their potential impact on diagnosis, classification, and prognosis. RECENT FINDINGS: Leukemogenesis is a complex process resulting from the accumulation of multiple genetic alterations...
April 22, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28441149/epigenetic-regulatory-mutations-and-epigenetic-therapy-for-multiple-myeloma
#2
Daphné Dupéré-Richer, Jonathan D Licht
PURPOSE OF REVIEW: Next generation sequencing and large-scale analysis of patient specimens has created a more complete picture of multiple myeloma (MM) revealing that epigenetic deregulation is a prominent factor in MM pathogenesis. RECENT FINDINGS: Over half of MM patients have mutations in genes encoding epigenetic modifier enzymes. The DNA methylation profile of MM is related to the stage of the disease and certain classes of mutations in epigenetic modifiers are more prevalent upon disease relapse, suggesting a role in disease progression...
April 22, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28426555/creating-artificial-lymphoid-tissues-to-study-immunity-and-hematological-malignancies
#3
Shivem B Shah, Ankur Singh
PURPOSE OF REVIEW: The specialized microenvironments of lymphoid tissue affect immune cell function and progression of disease. However, current animal models are low throughput and a large number of human diseases are difficult to model in animals. Animal models are less amenable to manipulation of tissue niche components, signalling pathways, epigenetics, and genome editing than ex vivo models. On the other hand, conventional 2D cultures lack the physiological relevance to study precise microenvironmental interactions...
April 19, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28426554/barking-up-the-right-tree-advancing-our-understanding-and-treatment-of-lymphoma-with-a-spontaneous-canine-model
#4
Dania Villarnovo, Angela L McCleary-Wheeler, Kristy L Richards
PURPOSE OF REVIEW: Spontaneous lymphoma in pet dogs is increasingly recognized as an ideal model for studying the disease in humans and for developing new targeted therapeutics for patients. Increasing interest by funding agencies, the private sector, and multidisciplinary academic collaborations between different disciplines and sectors now enables large knowledge gaps to be addressed and provides additional proof-of-concept examples to showcase the significance of the canine model. RECENT FINDINGS: The current review addresses the rationale for a canine lymphoma model including the valuable role it can play in drug development, serving as a link between mouse xenograft models and human clinical trials and the infrastructure that is now in place to facilitate these studies...
April 19, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28406802/distinct-subtype-distribution-and-somatic-mutation-spectrum-of-lymphomas-in-east-asia
#5
Weicheng Ren, Wei Li, Xiaofei Ye, Hui Liu, Qiang Pan-Hammarström
PURPOSE OF REVIEW: Here, we give an updated overview of the subtype distribution of lymphomas in East Asia and also present the genome sequencing data on two major subtypes of these tumors. RECENT FINDINGS: The distribution of lymphoma types/subtypes among East Asian countries is very similar, with a lower proportion of B-cell malignancies and a higher proportion of T/natural killer (NK)-cell lymphomas as compared to Western populations. Extranodal NK/T-cell lymphoma is more frequently observed in East Asia, whereas follicular lymphoma and chronic lymphocytic leukemia, are proportionally lower...
April 13, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28402987/new-insights-into-redox-homeostasis-as-a-therapeutic-target-in-b-cell-malignancies
#6
Agnieszka Graczyk-Jarzynka, Radoslaw Zagozdzon, Angelika Muchowicz, Marta Siernicka, Malgorzata Firczuk, Przemyslaw Juszczynski
PURPOSE OF REVIEW: The goal of this review is to summarize recent advances in our understanding of the regulation of redox homeostasis and the subtype-specific role of antioxidant enzymes in B-cell-derived malignancies. Furthermore, it presents selected prooxidative therapeutic strategies against B-cell neoplasms. RECENT FINDINGS: Recent reports have shown that the disturbed redox homeostasis in B-cell malignancies is regulated by cancer-specific signaling pathways and therefore varies between the individual subtypes...
April 13, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28383341/generating-autologous-hematopoietic-cells-from-human-induced-pluripotent-stem-cells-through-ectopic-expression-of-transcription-factors
#7
Yongsung Hwang, Hal E Broxmeyer, Man Ryul Lee
PURPOSE OF REVIEW: Hematopoietic cell transplantation (HCT) is a successful treatment modality for patients with malignant and nonmalignant disorders, usually when no other treatment option is available. The cells supporting long-term reconstitution after HCT are the hematopoietic stem cells (HSCs), which can be limited in numbers. Moreover, finding an appropriate human leukocyte antigen-matched donor can be problematic. If HSCs can be stably produced in large numbers from autologous or allogeneic cell sources, it would benefit HCT...
April 5, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28375987/hematopoietic-stem-cells-under-pressure
#8
Miguel Ganuza, Shannon McKinney-Freeman
PURPOSE OF REVIEW: Hematopoietic stem cells (HSCs) and progenitors are tasked with maintaining hematopoietic homeostasis in the face of numerous insults and challenges, including infection, inflammation, and exsanguination. HSCs possess the remarkable ability to reconstitute the entire hematopoietic system of an organism whose own hematopoietic system has been ablated. This ability is exploited routinely in the clinic via HSC transplantation (HSCT). Here, we focus on the physiological and molecular bottlenecks overcome by HSCs during transplantation...
April 1, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28375986/the-new-frontier-of-epigenetic-heterogeneity-in-b-cell-neoplasms
#9
Pilar M Dominguez, Matt Teater, Rita Shaknovich
PURPOSE OF REVIEW: There is mounting evidence that heterogeneity of the epigenome is a feature of many cancers, including B-cell lymphomas, and presents important clinical implications. The purpose of this review is to explain the biological and clinical relevance of this epigenetic phenomenon in B-cell neoplasms. RECENT FINDINGS: Here, we summarize new findings demonstrating that B-cell lymphomas display increased DNA methylation heterogeneity compared to their normal counterparts...
April 1, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28375985/distinct-functions-of-histone-h3-lysine-4-methyltransferases-in-normal-and-malignant-hematopoiesis
#10
Weiwei Yang, Patricia Ernst
PURPOSE OF REVIEW: Histone H3, lysine 4 (H3K4) methylation is one chromatin modification that defines distinct regulatory states of euchromatin. Mammals express six main histone methyltransferase (HMT) enzymes that modify H3K4 by monomethylation, dimethylation or trimethylation. Recent studies examine roles of some of these HMTs and their cofactors in hematopoiesis and leukemia. We discuss these emerging studies together with prior embryonic stem data, revealing how these enzymes function...
April 1, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306669/role-of-shp2-in-hematopoiesis-and-leukemogenesis
#11
Ruchi Pandey, Mallika Saxena, Reuben Kapur
PURPOSE OF REVIEW: SH2 domain-containing tyrosine phosphatase 2 (SHP2), encoded by PTPN11 plays an important role in regulating signaling from cell surface receptor tyrosine kinases during normal development as well as oncogenesis. Herein we review recently discovered roles of SHP2 in normal and aberrant hematopoiesis along with novel strategies to target it. RECENT FINDINGS: Cell autonomous role of SHP2 in normal hematopoiesis and leukemogenesis has long been recognized...
March 16, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306668/a-role-for-intracellular-and-extracellular-dek-in-regulating-hematopoiesis
#12
Maegan L Capitano, Hal E Broxmeyer
PURPOSE OF REVIEW: Hematopoietic stem/progenitor cell fate decision during hematopoiesis is regulated by intracellular and extracellular signals such as transcription factors, growth factors, and cell-to-cell interactions. In this review, we explore the function of DEK, a nuclear phosphoprotein, on gene regulation. We also examine how DEK is secreted and internalized by cells, and discuss how both endogenous and extracellular DEK regulates hematopoiesis. Finally, we explore what currently is known about the regulation of DEK during inflammation...
March 16, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306667/an-enlightening-year-in-vascular-biology
#13
Edward F Plow
No abstract text is available yet for this article.
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306666/new-biomarkers-and-imaging-approaches-for-the-diagnosis-of-deep-venous-thrombosis
#14
Jordan K Schaefer, Benjamin Jacobs, Thomas W Wakefield, Suman L Sood
PURPOSE OF REVIEW: Symptoms suggestive of deep vein thrombosis (DVT) are extremely common in clinical practice, but unfortunately nonspecific. In both ambulatory and inpatient settings, clinicians are often tasked with evaluating these concerns. Here, we review the most recent advances in biomarkers and imaging to diagnose lower extremity DVT. RECENT FINDINGS: The modified Wells score remains the most supported clinical decision rule for risk stratifying patients...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306665/molecular-mechanisms-that-mediate-invasion-and-egress-of-malaria-parasites-from-red-blood-cells
#15
Aditi Alaganan, Pallavi Singh, Chetan E Chitnis
PURPOSE OF REVIEW: Malaria parasites invade and multiply in diverse host cells during their complex life cycle. Some blood stage parasites transform into male and female gametocytes that are transmitted by female anopheline mosquitoes. The gametocytes are activated in the mosquito midgut to form male and female gametes, which egress from RBCs to mate and form a zygote. Here, we will review our current understanding of the molecular mechanisms that mediate invasion and egress by malaria parasites at different life cycle stages...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28306664/kr%C3%A3-ppel-like-factors-in-endothelial-cell-biology
#16
Eugene Chang, Lalitha Nayak, Mukesh K Jain
PURPOSE OF REVIEW: Krüppel-like factors (KLFs) are a family of transcription factors that regulate integral functions of endothelial cells including inflammation, proliferation, growth, apoptosis, cell differentiation and plasticity, and migration. This review will focus on the role of KLFs in physiological activity and their loss in vascular pathology. RECENT FINDINGS: New studies have pointed at the role of microRNAs as repressors of KLFs in atherosclerotic areas providing another level of signaling regulation of KLFs...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28212192/genetic-control-of-erythropoiesis
#17
Laxminath Tumburu, Swee Lay Thein
PURPOSE OF REVIEW: The discovery of several genetic variants associated with erythroid traits and subsequent elucidation of their functional mechanisms are exemplars of the power of the new genetic and genomic technology. The present review highlights findings from recent genetic studies related to the control of erythropoiesis and dyserythropoiesis, and fetal hemoglobin, an erythroid-related trait. RECENT FINDINGS: Identification of the genetic modulators of erythropoiesis involved two approaches: genome-wide association studies (GWASs) using single nucleotide polymorphism (SNP) arrays that revealed the common genetic variants associated with erythroid phenotypes (hemoglobin, red cell count, MCV, MCH) and fetal hemoglobin; and massive parallel sequencing such as whole genome sequencing (WGS) and whole exome sequencing (WES) that led to the discovery of the rarer variants (GFI1B, SBDS, RPS19, PKLR, EPO, EPOR, KLF1, GATA1)...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28212191/endothelial-cell-metabolism-an-update-anno-2017
#18
Laure-Anne Teuwen, Nihed Draoui, Charlotte Dubois, Peter Carmeliet
PURPOSE OF REVIEW: Endothelial cell metabolism has recently emerged as an important coregulator of angiogenesis and is therefore a promising new target in various angiogenesis-associated illnesses, like cancer. In this review, we discuss recent insights in endothelial cell metabolism in both physiological and pathological conditions and discuss possible translational implications. RECENT FINDINGS: Two metabolic pathways that determine the performance of endothelial cells are glycolysis and fatty acid oxidation (FAO)...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28212190/endothelial-cell-disease-emerging-knowledge-from-cerebral-cavernous-malformations
#19
Maria Grazia Lampugnani, Matteo Malinverno, Elisabetta Dejana, Noemi Rudini
PURPOSE OF REVIEW: Endothelial cells dysfunctions are crucial determinants of several human diseases. We review here the most recent reports on endothelial cell defects in cerebral cavernous malformations (CCMs), particularly focusing on adherens junctions. CCM is a vascular disease that affects specifically the venous microvessels of the central nervous system and which is caused by loss-of-function mutation in any one of the three CCM genes (CCM1, 2 or 3) in endothelial cells. The phenotypic result of these mutations are focal vascular malformations that are permeable and fragile causing neurological symptoms and occasionally haemorrhagic stroke...
May 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28212189/wnt-signaling-in-the-vessel-wall
#20
Lina Badimon, Maria Borrell-Pages
PURPOSE OF REVIEW: Wnt signaling plays a crucial role during embryogenesis. In an adult, Wnt is mainly associated to cellular proliferation and differentiation mechanisms. Recent data suggest that Wnt signaling is involved in the pathophysiology of atherosclerosis. However, the roles of Wnt signaling pathways in the vessel wall are poorly understood. This review outlines recent discoveries in understanding the role of Wnt pathways in healthy and atherosclerotic vessels. RECENT FINDINGS: In the last years, the involvement of both canonical and noncanonical Wnt pathways in the development of atherosclerotic lesions has been recognized...
May 2017: Current Opinion in Hematology
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