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Developmental Biology

Use of Hematopoietic Stem Cell Transplantation to Assess the Origin of Myelodysplastic Syndrome

Published: October 3rd, 2018

DOI:

10.3791/58140

1Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 2LGI Flow Cytometry Core Facility, Center for Cancer Research, National Cancer Institute, National Institutes of Health

We describe the use of hematopoietic stem cell transplantation (HSCT) to assess the malignant potential of genetically engineered hematopoietic cells. HSCT is useful for evaluating various malignant hematopoietic cells in vivo as well as generating a large cohort of mice with myelodysplastic syndromes (MDS) or leukemia to evaluate novel therapies.

Myelodysplastic syndromes (MDS) are a diverse group of hematopoietic stem cell disorders that are defined by ineffective hematopoiesis, peripheral blood cytopenias, dysplasia, and a propensity for transformation to acute leukemia. NUP98-HOXD13 (NHD13) transgenic mice recapitulate human MDS in terms of peripheral blood cytopenias, dysplasia, and transformation to acute leukemia. We previously demonstrated that MDS could be transferred from a genetically engineered mouse with MDS to wild-type recipients by transplanting MDS bone marrow nucleated cells (BMNC). To more clearly understand the MDS cell of origin, we have developed approaches to transplant specific, immunophenotypically defined hematopoietic subsets. In this article, we describe the process of isolating and transplanting specific populations of hematopoietic stem and progenitor cells. Following transplantation, we describe approaches to assess the efficiency of transplantation and persistence of the donor MDS cells.

Myelodysplastic syndromes (MDS) represent a diverse set of clonal blood disorders characterized by ineffective hematopoiesis, morphologic evidence of dysplasia, and a propensity for transformation to acute myeloid leukemia (AML)1,2,3,4. Ineffective hematopoiesis is recognized as a maturation arrest in bone marrow, and results in peripheral blood cytopenias despite a hypercellular bone marrow1,3. The incidence of MDS has been variously estimated as 2-12 cases per 100,000 persons annua....

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The animal procedures described in this article were approved by the National Cancer Institute at Bethesda Animal Care and Use Committee, and conform to the policies contained within The Public Health Service Policy on Humane Care and Use of Laboratory Animals, The Animal Welfare Act, and the Guide for the Care and Use of Laboratory Animals.

1. Cell Preparation

  1. Harvesting bone marrow nucleated cell (BMNC)
    1. Use only sterile materials. Sterilize re-usable instruments using.......

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We show representative figures for results of several experiments. Figure 1 shows a representative flow cytometry sorting experiment. During normal hematopoietic differentiation, as cells become committed to a specific hematopoietic lineage, they acquire lineage-defining cell surface markers and lose the potential for self-renewal. Therefore, in wild-type mice, stem cell self-renewal is confined to lineage-negative BMNC. In this experiment, we sorted BMNC fro.......

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Although MDS are a clonal hematopoietic stem cell disorder, the MDS "stem", or initiating cells, have not yet been characterized. We previously demonstrated that MDS can be transplantable to WT mice using bone marrow from NHD13 mice by HSCT, characterized by macrocytic anemia, leukopenia, neutropenia, and morphologic evidence of dysplasia15. In addition, competitive repopulation assays identified a growth advantage of cells from the NHD13 MDS bone marrow. Taken together, these findings imp.......

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This work was supported by the Intramural Research Program of the National Cancer Institute, National Institutes of Health (grant numbers ZIA SC 010378 and BC 010983).

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Name Company Catalog Number Comments
14 mL round bottom tube Falcon 352057
Hank's balanced salt solution Lonza 10-527F
Anti-CD45.2 antibody Southern Biotech 1800-15 LOT# A077-T044O
3 mL Syringe Monoject 8881513934
27-G needle BD 305109
20-G needle BD 305176
Lineage Cocktail Miltenyi 130-090-858 LOT# 5170418221
Anti-Biotin antibodies Miltenyi 130-113-288 LOT# 5171109046
1 mL Syringe Excelint 26027 Insulin Syringe
Heating Lamp Thermo Fisher Scientific E70001901
FACS machine Cytec FACScan 2 lasers, 5 color detectors
FACS sorting instrument Beckman Coulter MOFLO ASTRIOS 5 lasers, 23 parameters, 6 population sorting simulteneously
Propidium Iodide Thermo Fisher Scientific P3566
Gamma Irradiator Best Theratronics Gammacell 40
Blood collection tube RAM scientific 76011
Recipient mice Charles River B6-LY5.1/Cr, CD45.1
NUP98-HOXD13 mice n/a C57Bl/6, CD45.2 Colony maintained at NIH
5 mL round bottom tube Falcon 352058

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