Hematopoiesis News Volume 6.13 | Apr 7 2015

Hematopoietic Stem and Progenitor Cells Regulate the Regeneration of Their Niche by Secreting Angiopoietin-1
Researchers systematically assessed the expression and function of Angiopoietin-1 (Angpt1) in bone marrow. Angpt1 was not expressed by osteoblasts. Angpt1 was most highly expressed by hematopoietic stem cells, and at lower levels by c-kit⁺ hematopoietic progenitors, megakaryocytes, and leptin receptor⁺ stromal cells. [eLife] Abstract | Full Article

The Tetraspanin CD9 Participates in Dysmegakaryopoiesis and in Stroma Interactions in Primary Myelofibrosis
Scientists investigated whether CD9 participated in the dysmegakaryopoiesis observed in patients and whether it is involved in the altered interplay between megakaryocytes and stromal cells. [Haematologica]
Abstract | Full Article

Conserved and Divergent Aspects of Human T-Cell Development and Migration in Humanized Mice
Investigators compared conventional and non-conventional T-cell development in a neonatal chimera humanized mouse model with that seen in human fetal and neonatal thymus samples, and also examined the impact of a human HLA-A2 transgene expressed by the mouse stroma. They showed that developing human thymocytes engage in short, serial interactions with other human hematopoietic-derived cells. [Immunol Cell Biol] Full Article

BCR/ABL Oncogene-Induced PI3K Signaling Pathway Leads to Chronic Myeloid Leukemia Pathogenesis by Impairing Immuno-Modulatory Function of Hemangioblasts
The authors isolated fetal liver kinase-1-positive cells from chronic myeloid leukemia (CML) patients and found they expressed BCR/ABL-specific CML oncogene. They examined their biological characteristics as well as immunological functions and further detected the possible molecular mechanism involved in the leukemia genesis. [Cancer Gene Ther] Abstract

CLINICAL RESEARCH

Subcutaneous versus Intravenous Bortezomib in Two Different Induction Therapies for Newly Diagnosed Multiple Myeloma: Interim Analysis from the Prospective GMMG-MM5 Trial
Researchers investigated impact of subcutaneous versus intravenous bortezomib in the MM5 trial of the German-Speaking Myeloma Multicenter Group that compared bortezomib, doxorubicin, dexamethasone with bortezomib, cyclophosphamide, dexamethasone induction therapy in newly diagnosed multiple myeloma. [Haematologica] Abstract | Full Article

Hematopoietic Stem Cell Transplantation for Refractory Langerhans Cell Histiocytosis: Outcome by Intensity of Conditioning
There are currently two promising treatment strategies for high-risk Langerhans cell histiocytosis (LCH) patients: the first involves the combination of 2-chlorodeoxyadenosine and cytarabine; the other approach is allogeneic hematopoietic stem cell transplantation. Investigators evaluated 87 patients with high-risk LCH who were transplanted between 1990 and 2013. [Br J Haematol] Abstract

Age and Modified European LeukemiaNet Classification to Predict Transplant Outcomes: An Integrated Approach for Acute Myelogenous Leukemia Patients Undergoing Allogeneic Stem Cell Transplantation
Researchers evaluated the prognostic significance of a modified European LeukemiaNet classification for patients with acute myeloid leukemia undergoing hematopoietic stem cell transplantation while in first complete remission. [Biol Blood Marrow Transplant] Abstract

β-Thalassemias: Paradigmatic Diseases for Scientific Discoveries and Development of Innovative Therapies
The author summarizes the main discoveries and mechanisms associated with the synthesis of β-globin and abnormal erythropoiesis, as well as current and novel therapies. [Haematologica] Full Article

Visit our reviews page to see a complete list of reviews in the hematopoiesis research field.

Cleveland BioLabs Announces New U.S. Composition of Matter Patent for CBLB612
Cleveland BioLabs, Inc. announced the allowance of a U.S. patent application, to issue as U.S. Patent No. 9,006,183, covering composition of matter for CBLB612, an investigational drug in development for mobilization of hematopoietic stem cells and for the prevention of chemotherapy-induced myelosuppression. [Cleveland BioLabs, Inc.] Press Release

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Visit our events page to see a complete list of events in the hematopoiesis community.

Principal Scientist – Hematopoietic Products (STEMCELL Technologies Inc.)

Research Associate – Cell Separation (STEMCELL Technologies Inc.)

Postdoctoral Research Fellow – Stem Cell/Hematopoiesis Research (BloodCenter of Wisconsin)

Postdoctoral Fellow – Bioinformatics and Stem Cell Biology (The University of Texas Medical School at Houston)

Research Associate – Hematopoietic and Leukemic Stem Cells (Shanghai Jiao Tong University)

Postdoctoral Research Fellow – Hematopoietic Stem Cell Biology (University of Leuven)

Manufacturing Manager – Cell Therapy (Opexa Therapeutics)

Research Scientist – Cell Signaling in Normal and Leukemic Hematopoietic Stem and Progenitor Cells (Indiana University)

Postdoctoral Position – Drug Development for Anemia (Lund University)

Postdoctoral Position – Pediatric Hematology and Oncology (University Medical Center of Freiburg)

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