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Haematopoietic stem cell

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https://www.readbyqxmd.com/read/28714970/bone-marrow-adipocytes-promote-the-regeneration-of-stem-cells-and-haematopoiesis-by-secreting-scf
#1
Bo O Zhou, Hua Yu, Rui Yue, Zhiyu Zhao, Jonathan J Rios, Olaia Naveiras, Sean J Morrison
Endothelial cells and leptin receptor(+) (LepR(+)) stromal cells are critical sources of haematopoietic stem cell (HSC) niche factors, including stem cell factor (SCF), in bone marrow. After irradiation or chemotherapy, these cells are depleted while adipocytes become abundant. We discovered that bone marrow adipocytes synthesize SCF. They arise from Adipoq-Cre/ER(+) progenitors, which represent ∼5% of LepR(+) cells, and proliferate after irradiation. Scf deletion using Adipoq-Cre/ER inhibited haematopoietic regeneration after irradiation or 5-fluorouracil treatment, depleting HSCs and reducing mouse survival...
July 17, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28709842/what-compatibility-in-2017-for-the-haematopoietic-stem-cell-transplantation
#2
X Lafarge
The diversification of potential donors to perform stem cell allografts now enables to propose a compatible graft cell source adapted to the different clinical situations. Transplants with a geno-identical sibling donor, otherwise with the most HLA-compatible unrelated donor, remain the first-line solutions. Alternative transplants allow to graft patients having no donors in international registries, owing to the rarity of their HLA typing. They are carried out with fairly incompatible grafts and are therefore limited by the existence in the recipient of preformed anti-HLA antibodies which predispose to their rejection...
July 11, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28706966/data-on-the-fate-of-macs%C3%A2-microbeads-intramyocardially-co-injected-with-stem-cell-products
#3
Paula Müller, Ralf Gaebel, Heiko Lemcke, Gustav Steinhoff, Robert David
The data presented in this article are related to the research article "Intramyocardial Fate and Effect of Iron Nanoparticles co-injected with MACS® purified Stem Cell Products" (Müller et al., 2017) [1]. This article complements the cellular localization of superparamagnetic iron dextran particles (MACS® MicroBeads) used for magnetic activated cell sorting (MACS®). Data evaluate the time-dependent detachment of these nanoparticles from CD133(+) haematopoietic stem cells (HSCs) and CD271(+) mesenchymal stem cells (MSCs)...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28706392/acquired-aplastic-anemia-associated-with-trisomy-eight-converting-into-acute-myeloid-leukemia
#4
Sumit Grover, Amit Kumar Dhiman, Bhavna Garg, Neena Sood, Vikram Narang
Aplastic anemia (AA) is nowadays considered to be a clonal disorder arising from a defective hematopoietic stem cell developing after a generalized insult to bone marrow. Immunosuppressive treatment (IST) of AA causes suppression of the target dominant population of haematopoietic cells allowing the defective non targeted clones to expand. This may give rise to acute leukemia. Cytogenetic studies for chromosomal aberrations such as trisomy and monosomy may help in detecting such conversions. We present a case of acquired AA in a 60-year-old male presenting with pancytopenia and hypoplastic marrow treated with antithymocyte globulin, converting into myelodysplastic syndrome and later on acute promyelocytic leukemia after being in remission for 4 years...
July 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28694008/-reduced-intensity-conditioning-haematopoietic-stem-cell-transplantation-in-genetic-diseases-experience-of-the-spanish-working-group-for-bone-marrow-transplantation-in-children
#5
Lucía López-Granados, Montserrat Torrent, Ana Sastre, Marta Gonzalez-Vicent, Cristina Díaz de Heredia, Bienvenida Argilés, Antonia Pascual, José M Pérez-Hurtado, Luisa Sisinni, Miguel Ángel Diaz, Izaskun Elorza, M Angeles Dasí, Isabel Badell
INTRODUCTION: Haematopoietic stem cell transplantation (HSCT) involves implanting cellular elements capable of generating a new and healthy haematopoietic system. Reduced intensity conditioning (RIC) consists of an immunosuppressive treatment to facilitate a progressive implant with lower morbidity. This type of conditioning can also lead to myelosuppression, which is potentially reversible over time. Reduced intensity conditioning enables HSCT to be performed on patients with genetic diseases for whom added comorbidity is undesirable due to the high doses of chemotherapy that accompanies conventional myeloablative regimens...
July 7, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/28693128/pediatric-haematopoiesis-and-related-malignancies
#6
Mingwei Jin, Shumei Xu, Qi An
Survival after acute paediatric (0-14 years), adolescent (15-19 years) and young adult (20-39 years) leukaemia has improved substantially over the last five decades, particularly for acute lymphoblastic leukaemia (ALL) and acute promyelocytic leukaemia. This progress represents one of the most successful achievements in the history of medicine and has been attributed to the development of effective chemotherapy regimens, improvement in supportive care, better risk stratification, use of targeted therapies, and advances in haematopoietic stem cell transplantation...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28687394/umbilical-cord-blood-cytomegalovirus-serostatus-does-not-have-an-impact-on-outcomes-of-umbilical-cord-blood-transplantation-for-acute-leukaemia
#7
Olga Nikolajeva, Vanderson Rocha, Robert Danby, Annalisa Ruggeri, Fernanda Volt, Etienne Baudoux, Susana G Gomez, Gezine Kögler, Jerome Larghero, Lucilla Lecchi, Mar Sanchez Martinez, Cristina Navarrete, Fabienne Pouthiers, Sergio Querol, Chantal Kenzey, Richard Szydlo, Eliane Gluckman, Alejandro Madrigal
Several studies have reported an impact of the adult haematopoietic stem cells donors cytomegalovirus (CMV) serostatus on allogeneic haematopoietic cell transplantation (HCT) outcomes. Limited data, however, are available on the impact of cord blood unit (CBU) CMV serostatus on allogeneic umbilical cord blood transplantation (UCBT) outcomes. We analysed, retrospectively, the impact of CBU CMV serostatus on relapse incidence (RI) and 2-year non-relapse mortality (NRM) of single-unit CBU transplantation for acute leukaemia...
July 4, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28687174/pre-implantation-hla-matching-the-production-of-a-saviour-child
#8
REVIEW
Georgia Kakourou, Christina Vrettou, Maria Moutafi, Joanne Traeger-Synodinos
Pre-implantation genetic diagnosis (PGD) requires the use of assisted reproductive technology (ART) to create several pre-implantation-stage embryos, followed by biopsy of embryonic cells for genetic testing and transfer of selected embryos to the womb to establish a pregnancy. HLA typing of ART-created embryos was first reported in 2001. The aim is to establish a pregnancy that is HLA-compatible with an affected sibling who requires haematopoietic stem cell transplantation. HLA-typing can be performed with or without PGD for the exclusion of a single-gene disorder...
June 16, 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28685587/3-dimensional-nano-fibre-scaffold-for-ex-vivo-expansion-of-cord-blood-haematopoietic-stem-cells
#9
Seyed Hadi Mousavi, Saeid Abroun, Masoud Soleimani, Seyed Javad Mowla
Cord blood (CB) haematopoietic stem cell (HSC) is an alternative source of HSC transplantation. The limited cell number greatly restricts their clinic-scale therapeutic applications. The objective of this study was an ex vivo expansion of CB HSCs in a new three-dimensional polycaprolactone nano-scaffold coated with fibronectin (FN). First, we isolated CB CD34+ cells and cultured 10 days in presence of growth factors. The evaluation was performed by qRT-PCR, flow cytometry and clonogenicity. 3D PCL nano-scaffold coated with FN produced significantly higher total nucleated cells and CD34+ cells (p < ...
July 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28677683/routine-vaccination-practice-after-adult-and-paediatric-allogeneic-haematopoietic-stem-cell-transplant-a-survey-of-uk-nhs-programmes
#10
P D E Miller, T I de Silva, R Skinner, M Gilleece, A Peniket, A Hamblin, D Greenfield, C Anthias, K Peggs, A Madrigal, J A Snowden
This corrects the article DOI: 10.1038/bmt.2016.362.
July 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28677682/allogeneic-haematopoietic-stem-cell-transplant-in-patients-with-lower-risk-myelodysplastic-syndrome-a-retrospective-analysis-on-behalf-of-the-chronic-malignancy-working-party-of-the-ebmt
#11
M Robin, R Porcher, W Zinke-Cerwenka, A van Biezen, L Volin, G Mufti, C Craddock, J Finke, C Richard, J Passweg, A Peniket, J Maertens, G Sucak, T Gedde-Dahl, A Vitek, A Nagler, D Blaise, D Beelen, N Maillard, R Schwerdtfeger, T de Witte, N Kroger
This corrects the article DOI: 10.1038/bmt.2016.266.
July 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28676567/human-haematopoietic-stem-cell-development-from-the-embryo-to-the-dish
#12
REVIEW
Andrejs Ivanovs, Stanislav Rybtsov, Elizabeth S Ng, Edouard G Stanley, Andrew G Elefanty, Alexander Medvinsky
Haematopoietic stem cells (HSCs) emerge during embryogenesis and give rise to the adult haematopoietic system. Understanding how early haematopoietic development occurs is of fundamental importance for basic biology and medical sciences, but our knowledge is still limited compared with what we know of adult HSCs and their microenvironment. This is particularly true for human haematopoiesis, and is reflected in our current inability to recapitulate the development of HSCs from pluripotent stem cells in vitro In this Review, we discuss what is known of human haematopoietic development: the anatomical sites at which it occurs, the different temporal waves of haematopoiesis, the emergence of the first HSCs and the signalling landscape of the haematopoietic niche...
July 1, 2017: Development
https://www.readbyqxmd.com/read/28668466/recommendations-for-screening-monitoring-prevention-prophylaxis-and-therapy-of-hepatitis-b-virus-reactivation-in-patients-with-haematological-malignancies-and-patients-who-underwent-haematological-stem-cell-transplantation-a-position-paper
#13
L Sarmati, M Andreoni, G Antonelli, W Arcese, R Bruno, N Coppola, G B Gaeta, M Galli, C Girmenia, M Mikulska, F Pane, C F Perno, M Picardi, M Puoti, A Rambaldi, V Svicher, G Taliani, G Gentile
SCOPE: Hepatitis B virus (HBV) infection reactivation is associated with high morbidity and mortality in patients with haematological malignancy and/or haematopoietic stem cell transplantation (HSCT) however information on this issue is limited. The scope of this position paper is to provide recommendations on HBV screening, monitoring, prophylaxis, treatment and vaccination in the patients described above. METHODS: - These recommendations were developed from one meeting of experts attended by different Italian scientific societies as well as from a systematic literature review (through December 31, 2016) on HBV infection in haematological patients and in patients who underwent HSCT published in the same issue of this journal...
June 28, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28665482/the-p2x7-receptor-antagonist-brilliant-blue-g-reduces-serum-human-interferon-%C3%AE-in-a-humanized-mouse-model-of-graft-versus-host-disease
#14
N J Geraghty, L Belfiore, D Ly, S R Adhikary, S J Fuller, W Varikatt, M L Sanderson-Smith, V Sluyter, S I Alexander, R Sluyter, D Watson
Graft-versus-host disease (GVHD) remains a major problem after allogeneic haematopoietic stem cell transplantation, a curative therapy for haematological malignancies. Previous studies have demonstrated a role for the adenosine triphosphate (ATP)-gated P2X7 receptor channel in allogeneic mouse models of GVHD. In this study, injection of human peripheral blood mononuclear cells (PBMCs) into immunodeficient NOD-SCID-IL2Rγ(null) (NSG) mice established a humanized mouse model of GVHD. This model was used to study the effect of P2X7 blockade in this disease...
June 30, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28665046/features-of-lineage-specific-haematopoietic-metabolism-revealed-by-mitochondrial-proteomics
#15
Claudia Billing, Michael Walker, Nicole Noack, Christian Böhme, Uta Ceglarek, Dietger Niederwieser, Anthony Whetton, Michael Cross
Hematopoietic bone marrow is a regenerative tissue of high clinical relevance, yet relatively little is known about the metabolism of the stem and progenitor populations concerned. We have used a multipotent murine cell line to generate sufficient numbers of cells undergoing self-renewal, erythroid or myeloid differentiation to allow a proteomics analysis of enriched mitochondria. Stringent analysis identified 37 mitochondria-associated proteins changing on differentiation in this system. Those induced during differentiation were commonly associated with mature cell functions, while those inactivated upon differentiation indicate widespread changes in mitochondrial transport, fatty acid catabolism and oxidative phosphorylation...
June 30, 2017: Proteomics
https://www.readbyqxmd.com/read/28664700/cerebral-toxoplasmosis-after-haematopoietic-stem-cell-transplantation
#16
Agnieszka Zaucha-Prażmo, Marzena Samardakiewicz, Joanna Dubelt, Jerzy R Kowalczyk
Toxoplasmosis is an opportunistic infection caused by the parasite Toxoplasma gondii. The infection is severe and difficult to diagnose in patients receiving allogeneic haematopoietic stem cell transplantation (HSCT). It frequently involves the central nervous system. The case is presented of cerebral toxoplasmosis in a 17-year-old youth with Fanconi anaemia treated with haematopoietic stem cell transplantation (HSCT).
May 11, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28658926/role-of-vitamin-e-and-vitamin-a-in-oral-mucositis-induced-by-cancer-chemo-radiotherapy-a-meta-analysis
#17
REVIEW
Nallan Csk Chaitanya, Arvind Muthukrishnan, Dara Balaji Gandhi Babu, Chinta Sanjeeva Kumari, Madishetty Adi Lakshmi, Gayathri Palat, Khwaja Shoeb Alam
INTRODUCTION: Oral mucositis is known to hamper the quality of life in patients treated for oral cancer. Many pharmacological agents have been tried and tested in its management, especially vitamin supplements including A, E and their combinations. AIM: A Meta-analysis was carried out to evaluate the efficacy of vitamins individually used for prevention or treatment of oral mucositis separately for chemotherapy, concurrent chemo radiotherapy, radiotherapy and Haematopoietic Stem Cell Transplantation (HSCT) individuals...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658204/tracing-the-origins-of-relapse-in-acute-myeloid-leukaemia-to-stem-cells
#18
Liran I Shlush, Amanda Mitchell, Lawrence Heisler, Sagi Abelson, Stanley W K Ng, Aaron Trotman-Grant, Jessie J F Medeiros, Abilasha Rao-Bhatia, Ivana Jaciw-Zurakowsky, Rene Marke, Jessica L McLeod, Monica Doedens, Gary Bader, Veronique Voisin, ChangJiang Xu, John D McPherson, Thomas J Hudson, Jean C Y Wang, Mark D Minden, John E Dick
In acute myeloid leukaemia, long-term survival is poor as most patients relapse despite achieving remission. Historically, the failure of therapy has been thought to be due to mutations that produce drug resistance, possibly arising as a consequence of the mutagenic properties of chemotherapy drugs. However, other lines of evidence have pointed to the pre-existence of drug-resistant cells. For example, deep sequencing of paired diagnosis and relapse acute myeloid leukaemia samples has provided direct evidence that relapse in some cases is generated from minor genetic subclones present at diagnosis that survive chemotherapy, suggesting that resistant cells are generated by evolutionary processes before treatment and are selected by therapy...
June 28, 2017: Nature
https://www.readbyqxmd.com/read/28635677/t-cell-manipulation-strategies-to-prevent-graft-versus-host-disease-in-haploidentical-stem-cell-transplantation
#19
REVIEW
Jayakumar Vadakekolathu, Sergio Rutella
Allogeneic haematopoietic stem cell transplantation (HSCT) from an human leukocyte antigen (HLA)-identical donor can be curative for eligible patients with non-malignant and malignant haematological disorders. HSCT from alternative donor sources, such as HLA-mismatched haploidentical donors, is increasingly considered as a viable therapeutic option for patients lacking HLA-matched donors. Initial attempts at haploidentical HSCT were associated with vigorous bidirectional alloreactivity, leading to unacceptably high rates of graft rejection and graft-versus-host disease (GVHD)...
June 21, 2017: Biomedicines
https://www.readbyqxmd.com/read/28634034/absence-of-%C3%AE-chain-in-keratinocytes-alters-chemokine-secretion-resulting-in-reduced-immune-cell-recruitment
#20
Karolin Nowak, Daniela Linzner, Adrian J Thrasher, Paul F Lambert, Wei Li Di, Siobhan O Burns
Loss of function mutations in the common gamma (γc) chain cytokine receptor subunit give rise to severe combined immunodeficiency (SCID) characterised by lack of T and natural killer cells and infant death from infection. Haematopoietic stem cell transplantation or gene therapy offer cure but despite successful replacement of lymphoid immune lineages a long-term risk of severe cutaneous human papilloma virus (HPV) infections persists, possibly related to persistent γc-deficiency in other cell types. Here we demonstrate that keratinocytes, the only cell type directly infected by HPV, express functional γc and its co-receptors...
June 17, 2017: Journal of Investigative Dermatology
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