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Haematopoietic stem cell

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https://www.readbyqxmd.com/read/29472357/plerixafor-enables-the-safe-rapid-efficient-mobilization-of-haematopoietic-stem-cells-in-sickle-cell-disease-patients-after-exchange-transfusion
#1
Chantal Lagresle-Peyrou, François Lefrère, Elisa Magrin, Jean-Antoine Ribeil, Oriana Romano, Leslie Weber, Alessandra Magnani, Hanem Sadek, Clémence Plantier, Aurélie Gabrion, Brigitte Ternaux, Tristan Félix, Chloé Couzin, Aurélie Stanislas, Jean-Marc Tréluyer, Lionel Lamhaut, Laure Joseph, Marianne Delville, Annarita Miccio, Isabelle André-Schmutz, Marina Cavazzana
Sickle cell disease is characterized by chronic anaemia and vaso-occlusive crises, which eventually lead to multi-organ damage and premature death. Haematopoietic stem cell transplantation is the only curative treatment but it is limited by toxicity and poor availability of HLA-compatible donors. A gene therapy approach based on the autologous transplantation of lentiviral-corrected haematopoietic stem and progenitor cells was shown to be efficacious in one patient. However, alterations of the bone marrow environment and the red blood cells' properties hamper the harvesting and immunoselection of patient stem cells from bone marrow...
February 22, 2018: Haematologica
https://www.readbyqxmd.com/read/29468631/high-dose-melphalan-based-sequential-conditioning-chemotherapy-followed-by-allogeneic-haematopoietic-stem-cell-transplantation-in-adult-patients-with-relapsed-or-refractory-acute-myeloid-leukaemia
#2
Nina K Steckel, Christoph Groth, Jan-Henrik Mikesch, Rudolf Trenschel, Hellmut Ottinger, Lambros Kordelas, Carsten Mueller-Tidow, Christoph Schliemann, Christian Reicherts, Joern C Albring, Gerda Silling, Eva Schmidt, Wolfgang E Berdel, Georg Lenz, Markus Ditschkowski, Dietrich W Beelen, Matthias Stelljes
Considering the unsatisfactory results of salvage therapies for patients with relapsed/refractory acute myeloid leukaemia (R/R-AML), their value before allogeneic haematopoietic stem cell transplantation (HSCT) remains questionable. However, direct allogeneic HSCT following established conditioning regimens applied in patients with R/R-AML during active disease has been equally disappointing. In this retrospective observational study, high-dose melphalan, as part of a sequential preparative regimen, followed by a total body irradiation (4 × 2 Gy)-based or a treosulfan-based dose-adapted conditioning therapy for allogeneic HSCT was administered to 292 adult patients (median age 56 years, range 17-74) with primary refractory (144 patients), secondary refractory (97 patients) or relapsed AML (51 patients)...
February 21, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29466336/population-snapshots-predict-early-haematopoietic-and-erythroid-hierarchies
#3
Betsabeh Khoramian Tusi, Samuel L Wolock, Caleb Weinreb, Yung Hwang, Daniel Hidalgo, Rapolas Zilionis, Ari Waisman, Jun R Huh, Allon M Klein, Merav Socolovsky
The formation of red blood cells begins with the differentiation of multipotent haematopoietic progenitors. Reconstructing the steps of this differentiation represents a general challenge in stem-cell biology. Here we used single-cell transcriptomics, fate assays and a theory that allows the prediction of cell fates from population snapshots to demonstrate that mouse haematopoietic progenitors differentiate through a continuous, hierarchical structure into seven blood lineages. We uncovered coupling between the erythroid and the basophil or mast cell fates, a global haematopoietic response to erythroid stress and novel growth factor receptors that regulate erythropoiesis...
February 21, 2018: Nature
https://www.readbyqxmd.com/read/29460445/microvesicles-in-hepatic-and-peripheral-vein-can-predict-nonresponse-to-corticosteroid-therapy-in-severe-alcoholic-hepatitis
#4
S Sukriti, J S Maras, C Bihari, S Das, A K Vyas, S Sharma, S Hussain, S Shasthry, A Choudhary, M Premkumar, D Kumar, G Kumar, C Mukhopadhyay, A Kumar, N Trehanpati, P E Rautou, R Moreau, S K Sarin
BACKGROUND: Severe alcoholic hepatitis patients have high mortality and limited response to corticosteroids. Microvesicles reflect cellular stress and disease conditions. AIMS: To investigate whether microvesicles are associated with severity, response to steroid therapy and inflammation in severe alcoholic hepatitis. METHODS: Microvesicles originating from different cells were studied pre-therapy in 101 patients; (71 responder to corticosteroid therapy and 30 nonresponders) and 20 healthy controls...
February 20, 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29455932/a-paradigm-shift-on-beta-thalassaemia-treatment-how-will-we-manage-this-old-disease-with-new-therapies
#5
REVIEW
Maria Domenica Cappellini, John B Porter, Vip Viprakasit, Ali T Taher
Beta-thalassaemia causes defective haemoglobin synthesis leading to ineffective erythropoiesis, chronic haemolytic anaemia, and subsequent clinical complications. Blood transfusion and iron chelation allow long-term disease control, and haematopoietic stem cell transplantation offers a potential cure for some patients. Nonetheless, there are still many challenges in the management of beta-thalassaemia. The main treatment option for most patients is supportive care; furthermore, the long-term efficacy and safety of current therapeutic strategies are limited and adherence is suboptimal...
February 12, 2018: Blood Reviews
https://www.readbyqxmd.com/read/29449660/gut-microbiota-injury-in-allogeneic-haematopoietic-stem-cell-transplantation
#6
REVIEW
Yusuke Shono, Marcel R M van den Brink
Allogeneic haematopoietic stem cell transplantation (allo-HSCT) is considered to be the strongest curative immunotherapy for various malignancies (primarily, but not limited to, haematologic malignancies). However, application of allo-HSCT is limited owing to its life-threatening major complications, such as graft-versus-host disease (GVHD), relapse and infections. Recent advances in large-scale DNA sequencing technology have facilitated rapid identification of the microorganisms that make up the microbiota and evaluation of their interactions with host immunity in various diseases, including cancer...
February 16, 2018: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/29439735/peripheral-mononuclear-blood-cell-apheresis-in-a-preclinical-ovine-model
#7
Helen Lydon, Roger Brooks, Andrew McCaskie, Frances Henson
BACKGROUND: Recent research has demonstrated that circulating peripheral blood mononuclear fractions (PBMC) containing haematopoietic stem (HSC)/progenitor cells have the potential to play a crucial role in regenerative medicine strategies. Work in our laboratory has shown that a peripheral blood mononuclear cell fraction (PBMC) enhances cartilage repair in an osteochondral defect model in sheep and has a significant effect on cells in the joint niche. In order to obtain PBMC rich blood containing HSCs for further studies, we have performed, for the first time, apheresis on adult sheep...
February 13, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29432583/the-clinical-utility-of-pgd-with-hla-matching-a-collaborative-multi-centre-eshre-study
#8
G Kakourou, S Kahraman, G C Ekmekci, H A Tac, G Kourlaba, E Kourkouni, A Cervero Sanz, J Martin, H Malmgren, C Giménez, V Gold, F Carvalho, C Billi, J F C Chow, X Vendrell, G Kokkali, J Liss, J Steffann, J Traeger-Synodinos
STUDY QUESTION: Has PGD-HLA been successful relative to diagnostic and clinical efficacy? SUMMARY ANSWER: The diagnostic efficacy of PGD-HLA protocols was found lower in this study in comparison to published PGD-HLA protocols and to that reported for general PGD by ESHRE (78.5 vs 94.1% and vs 92.6%, respectively), while the clinical efficacy has proven very difficult to assess due to inadequate follow-up of both the ART/PGD and HSCT procedure outcomes. WHAT IS KNOWN ALREADY: The first clinical cases for PGD-HLA were reported in 2001...
February 8, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29424696/upper-respiratory-viral-infections-in-patients-with-haematological-malignancies-after-allogeneic-haematopoietic-stem-cell-transplantation-a-retrospective-study
#9
Erden Atilla, Didem Sahin, Pinar Ataca Atilla, Istar Dolapci, Alper Tekeli, Sinem Civriz Bozdag, Meltem Kurt Yuksel, Selami Kocak Toprak, Osman Ilhan, Onder Arslan, Muhit Ozcan, Gunhan Gurman, Pervin Topcuoglu
BACKGROUND: Community respiratory viruses (CRVs) are associated with upper respiratory viral infections (URI), pneumonia or life-threatening respiratory disease in patients with allogeneic hematopoietic stem cell transplantation (allo-HSCT). Our aim is to demonstrate our URI experience related to CRVs after allo-HSCT. METHODS: From January 2013 to November 2015, 39 post allo-HSCT patients with acute URI symptoms were included to the study. We evaluated CRVs by multiplex PCR from nasopharyngeal wash and throat swabs...
February 9, 2018: Antiviral Therapy
https://www.readbyqxmd.com/read/29423088/identification-of-survivin-as-a-promising-target-for-the-immunotherapy-of-adult-b-cell-acute-lymphoblastic-leukemia
#10
Laurie Freire Boullosa, Payalben Savaliya, Stephanie Bonney, Laurence Orchard, Hannah Wickenden, Cindy Lee, Evelien Smits, Alison H Banham, Ken I Mills, Kim Orchard, Barbara-Ann Guinn
B-cell acute lymphoblastic leukemia (B-ALL) is a rare heterogeneous disease characterized by a block in lymphoid differentiation and a rapid clonal expansion of immature, non-functioning B cells. Adult B-ALL patients have a poor prognosis with less than 50% chance of survival after five years and a high relapse rate after allogeneic haematopoietic stem cell transplantation. Novel treatment approaches are required to improve the outcome for patients and the identification of B-ALL specific antigens are essential for the development of targeted immunotherapeutic treatments...
January 9, 2018: Oncotarget
https://www.readbyqxmd.com/read/29411522/mapping-the-clec12a-expression-on-myeloid-progenitors-in-normal-bone-marrow-implications-for-understanding-clec12a-related-cancer-stem-cell-biology
#11
Marie Bill, Peter B van Kooten Niekerk, Petter S Woll, Laura Laine Herborg, Anne Stidsholt Roug, Peter Hokland, Line Nederby
The C-type lectin domain family 12, member A (CLEC12A) receptor has emerged as a leukaemia-associated and cancer stem cell marker in myeloid malignancies. However, a detailed delineation of its expression in normal haematopoiesis is lacking. Here, we have characterized the expression pattern of CLEC12A on the earliest stem- and myeloid progenitor subsets in normal bone marrow. We demonstrate distinct CLEC12A expression in the classically defined myeloid progenitors, where on average 39.1% (95% CI [32.5;45.7]) of the common myeloid progenitors (CMPs) expressed CLEC12A, while for granulocyte-macrophage progenitors and megakaryocyte-erythroid progenitors (MEPs), the average percentages were 81...
February 7, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29410536/acute-appendicitis-in-leukaemia-patients-undergoing-haematopoietic-stem-cell-transplantation-during-the-neutropaenic-phase-a-case-series-from-a-single-bmt-centre-in-china
#12
Q Zhang, Y Zhou, J K Majaw, J Xu, Z Wei, Q Mai, C Zou, Y Zhang, Z Fan, F Huang, J Sun, Q Liu, Q Jiang
No abstract text is available yet for this article.
February 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29410432/proliferation-dynamics-of-acute-myeloid-leukaemia-and-haematopoietic-progenitors-competing-for-bone-marrow-space
#13
O Akinduro, T S Weber, H Ang, M L R Haltalli, N Ruivo, D Duarte, N M Rashidi, E D Hawkins, K R Duffy, C Lo Celso
Leukaemia progressively invades bone marrow (BM), outcompeting healthy haematopoiesis by mechanisms that are not fully understood. Combining cell number measurements with a short-timescale dual pulse labelling method, we simultaneously determine the proliferation dynamics of primitive haematopoietic compartments and acute myeloid leukaemia (AML). We observe an unchanging proportion of AML cells entering S phase per hour throughout disease progression, with substantial BM egress at high levels of infiltration...
February 6, 2018: Nature Communications
https://www.readbyqxmd.com/read/29410372/addressing-ethical-and-procedural-principles-for-unrelated-allogeneic-haematopoietic-progenitor-cell-donation-in-a-changing-medical-environment
#14
S M van Walraven, T Egeland, V Borrill, G Nicoloso-de Faveri, G Rall, J Szer
Transplantation of allogeneic haematopoietic progenitor cells (HPC), as part of a potential life-saving treatment for haematological disorders, is a well-established medical procedure. Due to the efforts of the World Marrow Donor Association (WMDA) and other professional medical and scientific organisations, donation and collection of HPC from adult volunteer donors has become suitably regulated and standardized. Ongoing changes in the treatment of haematological disorders however, have led to a practice where organisations providing HPC from volunteer donors are confronted with requests for multiple or other than standard bone marrow or peripheral blood stem cell donations...
February 1, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29408330/new-human-combined-immunodeficiency-due-to-irf4-deficiency-inherited-by-uniparental-isodisomy
#15
María Bravo García-Morato, Francisco Javier Aracil Santos, Alejandro Contreras Briones, Alfonso Blázquez Moreno, Ángela Del Pozo Maté, Ángeles Domínguez-Soto, María José Beato Merino, Lucía Del Pino Molina, Juan Torres Canizales, Ana Victoria Marin, Elena Vallespín García, Marta Feito Rodríguez, Diego Plaza López Sabando, Anaïs Jiménez-Reinoso, Yasmina Mozo Del Castillo, Francisco José Sanz Santaeufemia, Raúl de Lucas-Laguna, Paula Cárdenas, Laura Casamayor Polo, María Coronel Díaz, Mar Valés-Gómez, Ernesto Roldán Santiago, Antonio Ferreira Cerdán, Julián Nevado Blanco, Ángel L Corbí, Hugh T Reyburn, José Ramón Regueiro, Eduardo López-Granados, Rebeca Rodríguez Pena
BACKGROUND: Interferon regulatory factor 4 (IRF4) is a fundamental transcription factor in adaptive and innate immunity, due to its key role in the differentiation and functional specialization of lymphoid and myeloid lineage cells. In mouse models, IRF4 participates in bone marrow central tolerance, naïve B cell activation, germinal centre formation, plasma cell differentiation, immunoglobulin secretion, T helper subset differentiation, macrophage polarization, and dendritic cell differentiation, among other processes...
February 2, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29392716/n-acetyl-l-cysteine-improves-mesenchymal-stem-cell-function-in-prolonged-isolated-thrombocytopenia-post-allotransplant
#16
Yuan Kong, Yang Song, Fei-Fei Tang, Hong-Yan Zhao, Yu-Hong Chen, Wei Han, Chen-Hua Yan, Yu Wang, Xiao-Hui Zhang, Lan-Ping Xu, Xiao-Jun Huang
Prolonged isolated thrombocytopenia (PT) is a serious complication of allogeneic haematopoietic stem cell transplantation (allo-HSCT). Murine studies and in vitro experiments suggest that mesenchymal stem cells (MSCs) can, not only to support haematopoiesis, but also preferentially support megakaryocytopoiesis in bone marrow (BM). However, little is known about the quantity and function of BM MSCs in PT patients. In a case-control study, we found that BM MSCs from PT patients exhibited significantly reduced proliferative capacities, increased reactive oxygen species and senescence...
February 2, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29388675/influenza-vaccines-in-immunosuppressed-adults-with-cancer
#17
REVIEW
Roni Bitterman, Noa Eliakim-Raz, Inbal Vinograd, Anca Zalmanovici Trestioreanu, Leonard Leibovici, Mical Paul
BACKGROUND: This is an update of the Cochrane review published in 2013, Issue 10.Immunosuppressed cancer patients are at increased risk of serious influenza-related complications. Guidelines, therefore, recommend influenza vaccination for these patients. However, data on vaccine effectiveness in this population are lacking, and the value of vaccination in this population remains unclear. OBJECTIVES: To assess the effectiveness of influenza vaccine in immunosuppressed adults with malignancies...
February 1, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29386716/guidelines-for-medical-management-of-nuclear-radiation-emergencies
#18
REVIEW
Velu Nair, D N Karan, C S Makhani
Management of victim of radiation injury poses a wide spectrum of challenges to the health care provider starting with the evaluation of the damage, the kind of hospitalization and treatment and the regular monitoring of the patient. Undesirable clinical outcomes are probable if prodromal stage evolves rapidly and is severe. Critical systems like neurovascular, gastrointestinal, haematopoietic and cutaneous are afflicted in Acute Radiation Syndrome. Three main elements which are essential for assessment of prognosis and selection of treatment are vomiting onset time, kinetics of depletion of lymphocyte, and chromosome abnormalities...
October 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/29386568/secretory-factors-from-op9-stromal-cells-delay-differentiation-and-increase-the-expansion-potential-of-adult-erythroid-cells-in-vitro
#19
Kongtana Trakarnsanga, Marieangela C Wilson, Kate J Heesom, Tatyana N Andrienko, Chatchawan Srisawat, Jan Frayne
Development of in vitro culture systems for the generation of red blood cells is a goal of scientists globally with the aim of producing clinical grade products for transfusion. Although mature reticulocytes can be efficiently generated by such systems, the numbers produced fall short of that required for therapeutics, due to limited proliferative capacity of the erythroblasts. To overcome this hurdle, approaches are required to increase the expansion potential of such culture systems. The OP9 mouse stromal cell line is known to promote haematopoietic differentiation of pluripotent stem cells, however an effect of OP9 cells on erythropoiesis has not been explored...
January 31, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29385852/clinical-trial-of-mgmt-p140k-gene-therapy-in-the-treatment-of-paediatric-patients-with-brain-tumours
#20
Belinda Kramer, Radhika Singh, Jessica Wischusen, Rebecca Velickovic, Amanda Rush, Shiloh Middlemiss, Yu-Wooi Ching, Ian Edward Alexander, Geoffrey B McCowage
Gene transfer targeting haematopoietic stem cells (HSC) in children has shown sustained therapeutic benefit in the treatment of genetic diseases affecting the immune system, most notably in the severe combined immuno-deficiencies affecting T cell function. The HSC compartment has also been successfully targeted using gene transfer in children with genetic diseases affecting the central nervous system, such as metachromatic leukodystrophy and adrenoleukodystrophy. The HSC is also a target for genetic modification in strategies aiming to confer drug resistance to chemotherapy agents so as to reduce off-target toxicity, and to allow for chemotherapy dose escalation with the possibility of enhanced therapeutic benefit...
January 31, 2018: Human Gene Therapy
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