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https://www.readbyqxmd.com/read/28108746/myeloid-derived-suppressor-cells-can-be-efficiently-generated-from-human-hematopoietic-progenitors-and-peripheral-blood-monocytes
#1
Sílvia Casacuberta-Serra, Marta Parés, Arantxa Golbano, Elisabet Coves, Carmen Espejo, Jordi Barquinero
Myeloid-derived suppressor cells (MDSCs) play an important role in controlling inflammation. As such, they are both a therapeutic target and, based on the administration of ex-vivo-generated MDSCs, a therapeutic tool. However, there are relatively few reports describing methods to generate human MDSCs, and most of them rely on cells obtained from peripheral blood monocytes. We investigated alternative approaches to the generation of MDSCs from hematopoietic progenitors and monocytes. Purified CD34(+) hematopoietic progenitors from apheresis products and CD14(+) cells isolated from buffy coats were cultured in the presence of different combinations of cytokines...
January 21, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28108472/relapsed-acute-promyelocytic-leukemia-lacks-classic-leukemic-promyelocyte-morphology-and-can-create-diagnostic-challenges
#2
Vanessa J Dayton, Robert W McKenna, Sophia L Yohe, Michelle M Dolan, Elizabeth Courville, Harold Alvarez, Michael A Linden
OBJECTIVES: Although current therapies for acute promyelocytic leukemia (APL), such as all-trans retinoic acid and arsenic trioxide, usually result in remission, some patients relapse. Early recognition of relapse is critical for prompt intervention. In this study, we systematically reviewed morphologic, immunophenotypic, and cytogenetic findings in paired diagnostic and relapsed APL cases and describe and quantify the changes in blast morphology at relapse. METHODS: By electronic database search, we identified eight paired diagnostic and relapsed APL cases for which peripheral blood or bone marrow smears were available for review...
January 20, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28108471/prognostic-significance-of-residual-acute-myeloid-leukemia-in-bone-marrow-samples-taken-prior-to-allogeneic-hematopoietic-cell-transplantation
#3
Alexandra E Kovach, Andrew M Brunner, Amir T Fathi, Yi-Bin Chen, Robert P Hasserjian
OBJECTIVES: We sought to identify features in routine evaluation of pre-hematopoietic cell transplantation (HCT) bone marrow samples from patients with acute myeloid leukemia (AML) that influenced patient outcome. METHODS: Of 140 patients, evidence of residual leukemia (RL) was identified in 38 (27%) of pre-HCT samples, as defined by 5% or more aspirate blasts, increased blood blasts, clustered or necrotic blasts on biopsy specimens, and/or leukemia-associated karyotypic abnormalities...
January 20, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28108271/comparative-effectiveness-of-busulfan-and-fludarabine-versus-fludarabine-and-400-cgy-total-body-irradiation-conditioning-regimens-for-aml-mds
#4
Moaath Mustafa Ali, Donna M Abounader, Lisa A Rybicki, Melissa A Yurch, Jamie Starn, Christina Ferraro, Victoria Winslow, Betty K Hamilton, Aaron T Gerds, Hien Liu, Robert Dean, Brian T Hill, Brad Pohlman, Steven Andresen, Rabi Hanna, Matt Kalaycio, Brian J Bolwell, Navneet S Majhail, Ronald Sobecks
Allogeneic hematopoietic cell transplantation (alloHCT) conditioning regimen intensity has varied for patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). A comparative effectiveness analysis was performed to assess outcomes of busulfan and fludarabine (BuFlu) versus fludarabine and 400 cGy total body irradiation (FluTBI) conditioning. Thirty-three subjects received BuFlu and 38 had FluTBI. The BuFlu group received more red blood cell transfusions (P=0.02) and had a longer time to platelet recovery (P=0...
January 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28107815/upfront-haploidentical-transplant-for-acquired-severe-aplastic-anemia-registry-based-comparison-with-matched-related-transplant
#5
Lan-Ping Xu, Song Jin, Shun-Qing Wang, Ling-Hui Xia, Hai Bai, Su-Jun Gao, Qi-Fa Liu, Jian-Min Wang, Xin Wang, Ming Jiang, Xi Zhang, De-Pei Wu, Xiao-Jun Huang
BACKGROUND: Haploidentical donor (HID) hematopoietic stem cell transplantation (HSCT) is an alternative treatment method for severe aplastic anemia (SAA) patients lacking suitable identical donors and those who are refractory to immunosuppressive therapy (IST). The current study evaluated the feasibility of upfront haploidentical HSCT in SAA patients. METHODS: We conducted a multicenter study based on a registry database. One hundred fifty-eight SAA patients who underwent upfront transplantation between June 2012 and September 2015 were enrolled...
January 21, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28107697/egcg-a-tea-polyphenol-as-a-potential-mitigator-of-hematopoietic-radiation-injury-in-mice
#6
Mrinalini Tiwari, Bhakti Dixit, Suhel Parvez, Paban K Agrawala
Agents capable of providing protection, mitigation or therapy against radiation injuries have long been of interest of radiation biologists owing to the ever expanding application of radiation in our day to day life despite the well reported ill effects of exposure. The current study investigates radiomitigating potential of EGCG (epigallocatechin gallate), a tea polyphenol with known DNMT inhibitory property, in C57 Bl/6 mice model. Treatment with 0.1833mg/kg body weight EGCG, 1.5h post-irradiation to lethally whole body irradiated mice rendered 45% survival for 30days and also helped restoring the body weight of the animals...
January 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28107427/serine-phosphorylation-of-slp76-is-dispensable-for-t-cell-development-but-modulates-helper-t-cell-function
#7
Victor H Navas, Céline Cuche, Andres Alcover, Vincenzo Di Bartolo
The adapter protein SLP76 is a key orchestrator of T cell receptor (TCR) signal transduction. We previously identified a negative feedback loop that modulates T cell activation, involving phosphorylation of Ser376 of SLP76 by the hematopoietic progenitor kinase 1 (HPK1). However, the physiological relevance of this regulatory mechanism was still unknown. To address this question, we generated a SLP76-S376A-expressing knock-in mouse strain and investigated the effects of Ser376 mutation on T cell development and function...
2017: PloS One
https://www.readbyqxmd.com/read/28107369/impact-of-donor-activating-kir-genes-on-hsct-outcome-in-c1-ligand-negative-myeloid-disease-patients-transplanted-with-unrelated-donors-a-retrospective-study
#8
Christine Neuchel, Daniel Fürst, Dietger Niederwieser, Donald Bunjes, Chrysanthi Tsamadou, Gerald Wulf, Michael Pfreundschuh, Eva Wagner, Gernot Stuhler, Hermann Einsele, Hubert Schrezenmeier, Joannis Mytilineos
Natural Killer cells (NK) are lymphocytes with the potential to recognize and lyse cells which escaped T-cell mediated lysis due to their aberrant HLA expression profiles. Killer cell immunoglobulin-like receptors (KIR) influence NK-cell activity by mediation of activating or inhibitory signals upon interaction with HLA-C (C1, C2) ligands. Therefore, absence of ligands for donor inhibitory KIRs following hematopoietic stem cell transplantation (HSCT) may have an influence on its outcome. Previous studies showed that C1 negative patients have a decreased HSCT outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28107317/photography-in-telemedicine-improving-diagnosis-of-chronic-graft-versus-host-disease%C3%A2
#9
Brianna Busby, Shannon Campbell, Rachel Cole, Charisse DeVries, Kamille Dobbins, Mary Beth Trimble, Mihkaila Wickline
BACKGROUND: The long-term follow-up (LTFU) team at the Seattle Cancer Care Alliance uses telemedicine to diagnose and treat post-transplantation complications in hematopoietic cell transplantation (HCT) survivors. Photos are often requested via the telemedicine service to aid in diagnosis, but they are typically of poor quality, making them unusable.
. OBJECTIVES: This project offered bachelor of science in nursing students, partnered with a comprehensive cancer center, the opportunity to participate in an evidence-based practice project to improve detection and management of chronic graft-versus-host disease (cGVHD) in patients after HCT...
February 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28107198/meta-analysis-of-the-actions-of-antithymocyte-globulin-in-patients-undergoing-allogeneic-hematopoietic-cell-transplantation
#10
Jiaojiao Yuan, Renzhi Pei, Wensi Su, Junjie Cao, Ying Lu
Graft-versus-host disease (GVHD) is a serious complication associated with allogeneic hematopoietic cell transplantation (allo-HCT). Antithymocyte globulin (ATG) is widely used prior to allo-HCT for GVHD prevention, though evidence of its efficacy remains unclear. We therefore identified nine randomized controlled trials (RCTs), enrolling 1089 patients (554 in the ATG group and 535 in the non-ATG group) to conduct a meta-analysis of the actions of ATG in allo-HCT. A relative risk or risk ratio (RR) and 95% confidence interval (CI) were calculated for each outcome...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28107070/tracheal-collapse-in-a-pekin-duck-anas-platyrhynchos-domestica
#11
Eugénie Henry-Guyot, Isabelle Langlois, Isabelle Lanthier, Dipl Acvp
A 5-year-old, 3.72-kg female Pekin duck ( Anas platyrhynchos domestica) was presented for acute respiratory distress, head shaking, and collapse. Similar spontaneously resolving episodes had previously occurred. Physical examination revealed severe inspiratory and expiratory dyspnea. Due to poor prognosis, euthanasia was elected. Postmortem examination revealed severe tracheal collapse involving the proximal trachea. The tracheal lumen was reduced in size by 75%. Histologic evaluation revealed ossification of the tracheal rings for approximately 60%-100% of their circumference...
December 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28106288/nuclear-inositide-signaling-via-phospholipase-c
#12
Stefano Ratti, Sara Mongiorgi, Giulia Ramazzotti, Matilde Y Follo, Giulia A Mariani, Pann-Ghill Suh, James A McCubrey, Lucio Cocco, Lucia Manzoli
The existence of an independent nuclear inositide pathway distinct from the cytoplasmic one has been demonstrated in different physiological systems and in diseases. In this prospect we analyze the role of PI-PLCβ1 nuclear isoform in relation to the cell cycle regulation, the cell differentiation and different physiopathological pathways focusing on the importance of the nuclear localization from both molecular and clinical point of view. PI-PLCβ1 is essential for G1/S transition through DAG and Cyclin D3 and plays also a central role in G2/M progression through Cyclin B1 and PKCα...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28105353/isolated-extramedullary-cutaneous-relapse-despite-concomitant-severe-graft-vs-host-disease-and-tissue-chimerism-analysis-in-a-patient-with-acute-lymphoblastic-leukemia-after-allogeneic-hematopoietic-stem-cell-transplantation-a-case-report
#13
Bulent Kantarcioglu, Huseyin Saffet Bekoz, Yeliz Duvarci Ogret, Asli Cakir, Demet Kivanc, Fatma Savran Oguz, Deniz Sargin
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment option for patients with acute lymphoblastic leukemia (ALL). The curative potential of allo-HSCT for ALL is, in part, due to the graft-vs.-leukemia (GVL) effect, in addition to the intensive conditioning chemo-radiotherapy. However, relapse remains the major cause of treatment failure following allo-HSCT for ALL. In the allo-HSCT setting, testing for genetic markers of hematopoietic chimerism has become a part of the routine diagnostic program...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28105201/comparison-of-microrna-expression-profiles-in-k562-cells-derived-microvesicles-and-parental-cells-and-analysis-of-their-roles-in-leukemia
#14
Xiaomei Chen, Wei Xiong, Huiyu Li
Microvesicles (MVs) are 30-1,000-nm extracellular vesicles that are released from a multitude of cell types and perform diverse cellular functions, including intercellular communication, antigen presentation, and transfer of proteins, messenger RNA and microRNA (also known as miR). MicroRNAs have been demonstrated to be aberrantly expressed in leukemia, and the overall microRNA expression profile may differentiate normal blood cells vs. leukemia cells. MVs containing microRNAs may enable intercellular cross-talk in vivo...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105145/stem-cell-transplantation-during-cancer
#15
Xiao-Ying Zhang, Pei-Ying Zhang
Hematological malignancies account for approximately 9.5% of new cancers diagnosed annually. Lymphoma is the most frequent of all known categories of hematological malignancies. Worldwide, extensive research has focused on this type of cancer. However, new treatments are investigated in various clinical as well as pre-clinical studies. Hematopoietic stem cell transplantation (HSCT) is a recent and upcoming treatment strategy for patients with hematopoietic malignancies and inborn errors of metabolism or immune deficiencies...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104809/gpnmb-promotes-proliferation-of-developing-eosinophils
#16
Sae Mi Hwang, Jin Hyun Kang, Bo Kyum Kim, Tae Gi Uhm, Hye Jung Kim, Hyune-Hwan Lee, Bert Binas, Il Yup Chung
Glycoprotein non-metastatic melanoma protein B (GPNMB) is a type I transmembrane protein that is expressed in a wide variety of cell types, including hematopoietic lineages. We previously demonstrated that GPNMB is one of the most highly expressed genes at an early and intermediate stage of eosinophil development. We herein examined GPNMB expression and its possible functional effect using cord blood (CB) CD34(+) hematopoietic stem cells differentiating toward eosinophils during a 24-day culture period. Western blot and confocal microscopy analyses showed that GPNMB reached its highest levels at day 12 with most GPNMB-positive cells also expressing major basic protein 1 (MBP1), an eosinophil granule protein...
January 18, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28104796/clonal-hematopoiesis-associated-with-tet2-deficiency-accelerates-atherosclerosis-development-in-mice
#17
José J Fuster, Susan MacLauchlan, María A Zuriaga, Maya N Polackal, Allison C Ostriker, Raja Chakraborty, Chia-Ling Wu, Soichi Sano, Sujatha Muralidharan, Cristina Rius, Jacqueline Vuong, Sophia Jacob, Varsha Muralidhar, Avril A B Robertson, Matthew A Cooper, Vicente Andrés, Karen K Hirschi, Kathleen A Martin, Kenneth Walsh
Human aging is associated with an increased frequency of somatic mutations in hematopoietic cells. Several of these recurrent mutations, including those in the gene encoding the epigenetic modifier enzyme TET2, promote expansion of the mutant blood cells. This "clonal hematopoiesis" correlates with an increased risk of atherosclerotic cardiovascular disease. Here we studied the effects of the expansion of Tet2-mutant cells in atherosclerosis-prone, low-density lipoprotein receptor-deficient (Ldlr-/-) mice. We found that partial bone marrow reconstitution with Tet2-deficient cells was sufficient for their clonal expansion and led to a marked increase in atherosclerotic plaque size...
January 19, 2017: Science
https://www.readbyqxmd.com/read/28104702/il-2-promotes-early-treg-reconstitution-after-allogeneic-hematopoietic-cell-transplantation
#18
Brian C Betts, Joseph Pidala, Jongphil Kim, Asmita Mishra, Taiga Nishihori, Lia Perez, Jose Leonel Ochoa-Bayona, Farhad Khimani, Kelly Walton, Ryan Bookout, Michael Nieder, Divis K Khaira, Marco Davila, Melissa Alsina, Teresa Field, Ernesto Ayala, Frederick L Locke, Marcie Riches, Mohamed Kharfan-Dabaja, Hugo Fernandez, Claudio Anasetti
Graft-versus-host disease remains a major cause of transplant-related mortality. Interleukin-2 plus sirolimus synergistically reduces acute graft-versus-host disease in rodents and promotes regulatory T-cells. This phase II trial tested the hypothesis that interleukin-2 would facilitate STAT5 phosphorylation in donor T-cells, expand regulatory T-cells, and ameliorate graft-versus-host disease. Between 4/16/2014-12/19/2015, 20 patients received interleukin-2 (200,000IU/m2 thrice weekly, days 0 to +90) with sirolimus (5-14ng/ml) and tacrolimus (3-7ng/ml) after HLA-matched related or unrelated allogeneic hematopoietic cell transplantation...
January 19, 2017: Haematologica
https://www.readbyqxmd.com/read/28104582/amniotic-fluid-derived-stem-cells-mixed-with-platelet-rich-plasma-for-restoration-of-rat-alveolar-bone-defect
#19
Minjiao Wang, Hongliang Li, Jiawen Si, Jiewen Dai, Jun Shi, Xudong Wang, Lihe Guo, Guofang Shen
Stem cells isolated from the amniotic fluid have been shown as a promising candidate for cell therapy and tissue engineering. However, the experimental and preclinical applications of amniotic fluid-derived stem cells (AFSCs) in the very field of maxillofacial bone tissue engineering are still limited. In this study, rat AFSCs were successfully harvested and characterized in vitro The rat AFSCs showed typical fibroblastoid morphology, stable proliferation activity and multi-differentiation potential. Flow-cytometry analysis demonstrated that these cells were positive for CD29, CD44, and CD90, while negative for hematopoietic markers such as CD34 and CD45...
January 18, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28104514/increased-foxp3-helios-regulatory-t-cells-and-decreased-acute-graft-versus-host-disease-after-allogeneic-bone-marrow-transplantation-in-patients-receiving-sirolimus-and-rgi-2001-an-activator-of-invariant-natural-killer-t-cells
#20
Yi-Bin Chen, Yvonne A Efebera, Laura Johnston, Edward D Ball, David Avigan, Lazaros J Lekakis, Carlos R Bachier, Paul Martin, Omar Duramad, Yasuyuki Ishii, Semi Han, Yu-Jin Jung, Dana Lee, Lori Kunkel, Robert S Negrin, Jack D Bui
Regulatory T (Treg) cells play a central role in immune tolerance and prevention of aberrant immune responses. Several studies have suggested that the risk of GVHD after allogeneic hematopoietic cell transplantation (HCT) can be ameliorated by increasing Tregs. We have developed an approach of in vivo expansion of Tregs with RGI-2001, a novel liposomal formulation of a synthetic derivative of alpha-galactosylceramide, a naturally occurring ligand that binds to CD1 and activates and expands invariant natural killer cells...
January 16, 2017: Biology of Blood and Marrow Transplantation
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