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https://www.readbyqxmd.com/read/28431019/identifying-cytomegalovirus-cmv-complications-using-the-quantiferon-cmv-assay-after-allogeneic-hematopoietic-stem-cell-transplantation
#1
Michelle K Yong, Paul U Cameron, Monica Slavin, C Orla Morrissey, Krystal Bergin, Andrew Spencer, David Ritchie, Allen C Cheng, Assia Samri, Guislaine Carcelain, Brigitte Autran, Sharon R Lewin
Background: Cytomegalovirus (CMV) reactivation and disease remain a major cause of morbidity and mortality in hematopoietic stem cell transplant (HSCT) recipients. A simple test to identify recovery of CMV-specific T-cell immunity could assist clinicians in managing CMV-related complications. Methods: In an observational multi-centre prospective study of 94 allogeneic HSCT recipients we evaluated CMV-specific T-cell immunity at baseline, 3, 6, 9 and 12 months post-transplant using the Quantiferon-CMV®, an ELISpot assay and in a subset, we also evaluated intracellular cytokine staining (ICS)...
April 18, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28428885/the-why-what-and-how-of-the-new-fact-standards-for-immune-effector-cells
#2
EDITORIAL
Marcela V Maus, Sarah Nikiforow
Novel cellular therapies outside of traditional hematopoietic stem cell transplantation or hematopoietic progenitor cell (HPC) therapy are currently under evaluation in clinical trials across the United States and around the world. Several cellular products, e.g., CD19-directed Chimeric Antigen Receptor (CAR) T cells, are poised for FDA approval and thus increased use at a wider range of academic centers within the next year, with the likelihood of dissemination to standard oncology practice once safety is confirmed...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28423578/endothelial-microparticles-delivering-microrna-155-into-t-lymphocytes-are-involved-in-the-initiation-of-acute-graft-versus-host-disease-following-allogeneic-hematopoietic-stem-cell-transplantation
#3
Ran Zhang, Xiaoxiao Wang, Mei Hong, Ting Luo, Miaomiao Zhao, Haorui Shen, Jun Fang, Xiaojie Li, Sibin Zang, Ping Chen, Dimin Nie, Peng Zheng, Qiuling Wu, Linghui Xia
Endothelial microparticles (EMPs) upregulation has been observed in acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). However, the role of EMPs remains unclear. We found that EMPs derived from TNF-α-stimulated human umbilical vein endothelial cells (EA.hy926) concentrated more microRNA-155 (miR-155) compared with maternal cells. The miR-155 levels in MPs from peripheral blood of aGVHD patients and mice were remarkably elevated and significantly higher than the levels in plasma...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421078/genetic-association-of-hematopoietic-stem-cell-transplantation-outcome-beyond-histocompatibility-genes
#4
REVIEW
Rihab Gam, Pranali Shah, Rachel E Crossland, Jean Norden, Anne M Dickinson, Ralf Dressel
The outcome of hematopoietic stem cell transplantation (HSCT) is controlled by genetic factors among which the leukocyte antigen human leukocyte antigen (HLA) matching is most important. In addition, minor histocompatibility antigens and non-HLA gene polymorphisms in genes controlling immune responses are known to contribute to the risks associated with HSCT. Besides single-nucleotide polymorphisms (SNPs) in protein coding genes, SNPs in regulatory elements such as microRNAs (miRNAs) contribute to these genetic risks...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28420440/immune-response-after-autologous-hematopoietic-stem-cell-transplantation-in-type-1-diabetes-mellitus
#5
Lei Ye, Li Li, Bing Wan, Minglan Yang, Jie Hong, Weiqiong Gu, Weiqing Wang, Guang Ning
BACKGROUND: This study explored the details of the immune response after autologous hematopoietic stem cell transplantation (AHSCT) treatment in type 1 diabetes mellitus. METHODS: Peripheral blood mononuclear cells (PBMCs) from 18 patients with type 1 diabetes mellitus were taken at baseline and 12 months after AHSCT or insulin-only therapy. The lymphocyte proliferation, mRNA expression and secretion of pro-inflammatory and anti-inflammatory cytokines belonging to T-helper type 1 (Th1), T-helper type 17 (Th17) and regulatory T (Treg) cells in PBMC culture supernatants were assessed...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28419210/dasatinib-use-and-risk-of-cytomegalovirus-reactivation-after-allogeneic-hematopoietic-cell-transplantation
#6
Daniel P Prestes, Esther Arbona, Alexandra Nevett-Fernandez, Ann E Woolley, Vincent T Ho, Sophia Koo, Lindsey R Baden, John Koreth, Sarah P Hammond, Nicolas C Issa, Francisco M Marty
Viral infections have been reported with dasatinib use, but its cytomegalovirus risk after hematopoietic-cell transplantation (HCT) is not known. We found that post-HCT dasatinib use increased the risk of cytomegalovirus reactivation (adjusted hazard ratio 7.65; 95% CI, 1.84-31.7), controlling for acute graft-versus-host disease, in 109 patients with Philadelphia-chromosome-positive malignancies.
April 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28418072/myb-gata1-fusion-promotes-basophilic-leukaemia-involvement-of-il33-and-nerve-growth-factor-receptors
#7
Stéphane Ducassou, Valérie Prouzet-Mauléon, Marie-Céline Deau, Philippe Brunet de la Grange, Bruno Cardinaud, Hayssam Soueidan, Cathy Quelen, Pierre Brousset, Jean-Max Pasquet, François Moreau-Gaudry, Michel Arock, François-Xavier Mahon, Eric Lippert
Acute basophilic leukaemia (ABL) is a rare subtype of acute myeloblastic leukaemia. We previously described a recurrent t(X;6)(p11;q23) translocation generating a MYB-GATA1 fusion gene in male infants with ABL. To better understand its role, the chimeric MYB-GATA1 transcription factor was expressed in CD34-positive hematopoietic progenitors which were transplanted into immunodeficient mice. Cells expressing MYB-GATA1 showed increased expression of markers of immaturity (CD34), of granulocytic lineage (CD33, CD117) and of basophilic differentiation (CD203c, FcƐRI)...
April 18, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28417421/a-review-of-infectious-complications-after-haploidentical-hematopoietic-stem-cell-transplantations
#8
REVIEW
Erden Atilla, Pinar Ataca Atilla, Sinem Civriz Bozdağ, Taner Demirer
BACKGROUND: Allogeneic hematopoietic stem cell transplantation from haploidentical donor is a feasible option for patients with hematological diseases who lack a suitable HLA-matched donor, but viral and fungal infections are still the most common causes of morbidity and mortality in haploidentical transplantation setting because of delayed immune reconstitution, increased risk of graft vs host disease (GvHD) or systemic steroid use. Therefore, this review will focus on the infectious complications after haploidentical hematopoietic stem cell transplantation (HSCT)...
April 17, 2017: Infection
https://www.readbyqxmd.com/read/28414300/pd-l1-serves-as-a-double-agent-in-separating-gvl-from-gvhd
#9
Todd V Brennan, Yiping Yang
Allogeneic hematopoietic cell transplantation (HCT) represents a potentially curative treatment for a variety of hematologic malignancies due to the well-recognized graft-versus-leukemia/lymphoma (GVL) effect that is mediated by donor-derived alloreactive T cells. However, graft-versus-host disease (GVHD) is mediated by the same T cells and remains a significant clinical problem associated with substantial morbidity and mortality. In this issue of the JCI, Ni and colleagues used several murine models of GVHD to evaluate the effect of CD4+ T cell depletion on GVL versus GVHD and revealed that depletion of CD4+ T cells leads to the upregulation of PD-L1 by recipient tissues and donor CD8+ T cells...
April 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28414296/pd-l1-interacts-with-cd80-to-regulate-graft-versus-leukemia-activity-of-donor-cd8-t-cells
#10
Xiong Ni, Qingxiao Song, Kaniel Cassady, Ruishu Deng, Hua Jin, Mingfeng Zhang, Haidong Dong, Stephen Forman, Paul J Martin, Yuan-Zhong Chen, Jianmin Wang, Defu Zeng
Programmed death ligand-1 (PD-L1) interacts with programmed death-1 (PD-1) and the immunostimulatory molecule CD80 and functions as a checkpoint to regulate immune responses. The interaction of PD-L1 with CD80 alone has been shown to exacerbate the severity of graft-versus-host disease (GVHD), whereas costimulation of CD80 and PD-1 ameliorates GVHD. Here we have demonstrated that temporary depletion of donor CD4+ T cells early after hematopoietic cell transplantation effectively prevents GVHD while preserving strong graft-versus-leukemia (GVL) effects in allogeneic and xenogeneic murine GVHD models...
April 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28411358/early-diagnostic-markers-for-detection-of-acute-kidney-injury-in-allogeneic-hematopoietic-stem-cell-transplant-recipients
#11
Serpil Muge Deger, Yasemin Erten, Elif Suyani, Sahika Zeynep Aki, Gulay Ulusal Okyay, Ozge T Pasaoglu, Hatice Pasaoglu, Turgay Arinsoy, Gulsan Turkoz Sucak
OBJECTIVES: Acute kidney injury is a relatively frequent complication of allogenic hematopoietic stem cell transplant, resulting in increased risk of morbidity and mortality. Early diagnosis and management of acute kidney injury is of great importance for prevention of poor outcomes in these transplant recipients. MATERIALS AND METHODS: Fifty consecutive patients, hospitalized for allogenic hematopoietic stem cell transplant at the Bone Marrow Transplantation Unit of Gazi University Faculty of Medicine, were included in this prospective study...
April 14, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28411175/risk-factors-for-subsequent-central-nervous-system-cns-tumors-in-pediatric-allogeneic-hematopoietic-cell-transplant-hct-a-study-from-the-center-for-international-blood-and-marrow-transplant-research-cibmtr
#12
Melissa Gabriel, Bronwen Shaw, Ruta Brazauskas, Min Chen, David A Margolis, Henrik Sengelov, Ann Dahlberg, Ibrahim A Ahmed, David Delgado, Hillard M Lazarus, Brenda Gibson, Kasiani C Myers, Rammurti T Kamble, Aly Abdel-Mageed, Chi-Kong Li, Mary E D Flowers, Minoo Battiwalla, Bipin N Savani, Navneet Majhail, Peter Shaw
Survivors of Hematopoietic cell transplantation (HCT) are at risk of subsequent solid tumors, including central nervous system (CNS) tumors. The risk of CNS tumors post HCT in pediatric HCT recipients is not known. We evaluated the incidence and risk factors for CNS tumors in pediatric recipients of allogeneic HCT reported to the Center for International Blood and Marrow Transplant Research (CIBMTR) between 1976 and 2008. A case control design was used. There were no CNS tumors in the non-malignant cohort (n=4543) or in those undergoing HCT for solid tumors (n=26)...
April 11, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28411174/evaluation-of-hematopoietic-stem-cell-mobilization-rates-with-early-plerixafor-administration-time-for-adult-stem-cell-transplantation
#13
Jessica T Stover, J Ryan Shaw, Maragatha Kuchibhatla, Mitchell E Horwitz, Ashley M Engemann
The addition of plerixafor to high-dose colony stimulating growth factor has been shown to improve stem cell mobilization rates in autologous transplant patients with multiple myeloma and non-Hodgkin's lymphoma. This study evaluates the change in administration time of plerixafor to determine if cell mobilization rates are similar between the FDA approved administration time of 11 hours prior to apheresis and an earlier administration time of 16 hours prior to apheresis. Medical records of patient ≥ 18 years of age undergoing autologous stem cell transplantation requiring the use of plerixafor after at least four days of G-CSF therapy to complete stem cell mobilization from 1 January 2010 through 30 September 2014 were retrospectively reviewed...
April 11, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28405517/hematopoietic-stem-cell-derived-myeloid-and-plasmacytoid-dc-based-vaccines-are-highly-potent-inducers-of-tumor-reactive-t-cell-and-nk-cell-responses-ex-vivo
#14
Soley Thordardottir, Nicolaas Schaap, Elja Louer, Michel G D Kester, J H Frederik Falkenburg, Joop Jansen, Timothy R D Radstake, Willemijn Hobo, Harry Dolstra
Because of the potent graft-versus-tumor (GVT) effect, allogeneic stem cell transplantation (alloSCT) can be a curative therapy for hematological malignancies. However, relapse remains the most frequent cause of treatment failure, illustrating the necessity for development of adjuvant post-transplant therapies to boost GVT immunity. Dendritic cell (DC) vaccination is a promising strategy in this respect, in particular, where distinct biologic functions of naturally occurring DC subsets, i.e. myeloid DCs (mDCs) and plasmacytoid DCs (pDCs), are harnessed...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28399040/a-new-enzyme-linked-immunosorbent-assay-elisa-for-a-total-anti-t-lymphocyte-globulin-determination-development-analytical-validation-and-clinical-application
#15
M Montagna, G La Nasa, M E Bernardo, E Piras, M A Avanzini, M Regazzi, F Locatelli
BACKGROUND: Anti-T lymphocyte globulin (ATLG) modulates the alloreactivity of T lymphocytes, reducing the risk of immunological post-transplant complications, in particular rejection and graft-versus-host disease (GvHD), after allogeneic hematopoietic stem cell transplantation (HSCT).We developed and validated a new enzyme-linked immunosorbent assay (ELISA) method to measure serum levels of total ATLG and evaluate the pharmacokinetics (PK) of the drug in children with β-Thalassemia, receiving allogeneic HSCT...
April 7, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28396673/natural-killer-group-2-member-d-nkg2d-ligands-in-hematopoietic-cell-transplantation
#16
REVIEW
Raphael Carapito, Ismail Aouadi, Wassila Ilias, Seiamak Bahram
Natural killer group 2, member D (NKG2D) is an invariant activatory receptor present on subsets of natural killer and T lymphocytes. It stimulates the cytolytic effector response upon engagement of its various stress-induced ligands NKG2D ligands (NKG2DL). Malignant transformation and conditioning treatment prior to hematopoietic cell transplantation (HCT) are stress factors leading to the activation of the NKG2D/NKG2DL signaling in clinical settings. In the context of HCT, NKG2D-bearing cells can kill both tumor and healthy cells expressing NKG2DL...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28396160/allogeneic-hematopoietic-cell-transplantation-hct-for-adult-t-cell-acute-lymphoblastic-leukemia-t-all
#17
Betty Ky Hamilton, Lisa Rybicki, Donna Abounader, Kehinde Adekola, Anjali Advani, Ibrahim Aldoss, Veronika Bachanova, Asad Bashey, Stacey Brown, Marcos DeLima, Steven Devine, Christopher R Flowers, Siddharth Ganguly, Madan Jagasia, Vanessa E Kennedy, Dennis Dong Hwan Kim, Joseph McGuirk, Vinod Pullarkat, Rizwan Romee, Karamjeet Sandhu, Melody Smith, Masumi Ueda, Auro Viswabandya, Khoan Vu, Sarah Wall, Simon B Zeichner, Miguel-Angel Perales, Navneet S Majhail
Allogeneic hematopoietic cell transplantation (HCT) is recommended for T-cell acute lymphoblastic leukemia (T-ALL) in second or later complete remission (CR) and in high risk patients in first CR. Given its relative rarity, data on outcomes of HCT for T-ALL are limited. We conducted a multi-center retrospective cohort study using data from 208 adult patients transplanted from 2000-2014 to describe outcomes of allogeneic HCT for T-ALL in the contemporary era. Median age at HCT was 37 years and the majority of patients were transplanted in CR, using total body irradiation (TBI) based myeloablative conditioning regimens...
April 7, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28395444/-prognostic-value-of-dynamic-monitoring-of-runx1-runx1t1-transcript-in-pediatric-acute-myeloid-leukemia
#18
H T Gao, Y Zhang, K Sun, J M Guo, Y Q Chen, X L Chen, J Shi, X N Niu, F Wang, L Huo
Objective: To investigate the prognostic value of dynamic monitoring of RUNX1-RUNX1T1 transcript in pediatric patients with t (8;21) acute myeloid leukemia (AML) . Methods: The clinical features and RUNX1-RUNX1T1 transcript levels of 55 pediatric t (8;21) AML patients, newly diagnosed from Jan. 2010 to Apr. 2016, were analyzed retrospectively. The relationship between the minimal residual disease (MRD) and prognosis was analysed by dynamic monitoring of RUNX1-RUNX1T1 transcript levels using real-time quantitative PCR (RQ-PCR) technology...
March 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28394368/the-injured-heart-early-cardiac-effects-of-hematopoietic-stem-cell-transplantation-in-children-and-young-adults
#19
S J Rotz, T D Ryan, S Jodele, J L Jefferies, A Lane, A Pate, R Hirsch, J Hlavaty, A E Levesque, M D Taylor, M Cash, K C Myers, J A El-Bietar, S M Davies, C E Dandoy
We hypothesized that subclinical cardiac injury in the peri-transplant period is more frequent than currently appreciated in children and young adults. We performed echocardiographic screening on 227 consecutive patients prior to hematopoietic stem cell transplantation (HSCT), and 7, 30 and 100 days after transplant. We measured cardiac biomarkers cardiac troponin-I (cTn-I), and soluble suppressor of tumorigenicity 2 (sST2) prior to transplant, during conditioning, and days +7, +14, +28 and +49 in 26 patients...
April 10, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28394367/safety-of-pre-emptive-donor-lymphocyte-infusions-dli-based-on-mixed-chimerism-mc-in-peripheral-blood-or-bone-marrow-subsets-in-children-undergoing-hematopoietic-stem-cell-transplant-hsct-for-hematologic-malignancies
#20
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