In vivo (Athens, Greece) · 2017
Reduced Competitive Repopulation Capacity of Multipotential Hematopoietic Stem Cells in the Bone Marrow of Friend Virus-infected Fv2-resistant Mice.
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Epperly Michael W, Zhang Xichen, Fisher Renee, Hou Wen, Franicola Darcy, Shields Donna, Quickel Michael, Hankey-Giblin Pamela, Wang Hong, Greenberger Joel S
Аннотация
BACKGROUND/AIM: The polycythemia form of Friend leukemia virus (FVP) causes splenomegaly and lethal erythroleukemia in Fv-2s-susceptible mouse strains. We sought to determine whether the hematopoietic stem cell (HSC) pool was expanded in Fv-2r-resistant mice.
MATERIALS AND METHODS: The 120-day bone marrow transplantation competitive repopulation assay was used to determine whether FVP-infected Fv-2r C57BL/6 mice demonstrated expansion of the HSC pool compared to the pool of committed hematopoietic progenitor cells in the same marrow assayed in vitro.
RESULTS: There was a significant expansion of committed hematopoietic progenitors observed in virus-infected Fv-2s FVB mice, but not Fv-2r C57BL/6 mice. Furthermore, Fv-2r mice showed no detectable expansion of either committed hematopoietic progenitor cells or the multipotential stem cell pool by competitive repopulation assay.
CONCLUSION: Friend virus disease in Fv-2s mice is associated with expansion of committed hematopoietic progenitors. Fv-2r mice show no expansion of either committed progenitor or pluripotential stem cell numbers.
MATERIALS AND METHODS: The 120-day bone marrow transplantation competitive repopulation assay was used to determine whether FVP-infected Fv-2r C57BL/6 mice demonstrated expansion of the HSC pool compared to the pool of committed hematopoietic progenitor cells in the same marrow assayed in vitro.
RESULTS: There was a significant expansion of committed hematopoietic progenitors observed in virus-infected Fv-2s FVB mice, but not Fv-2r C57BL/6 mice. Furthermore, Fv-2r mice showed no detectable expansion of either committed hematopoietic progenitor cells or the multipotential stem cell pool by competitive repopulation assay.
CONCLUSION: Friend virus disease in Fv-2s mice is associated with expansion of committed hematopoietic progenitors. Fv-2r mice show no expansion of either committed progenitor or pluripotential stem cell numbers.