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Transcription profiling by array of the Ts(1716)65Dn Down syndrome mouse model bone marrow lineage- c-Kit+ Sca-1+ (LSK), CMP, GMP and MEP progenitor cell populations, in which trisomy of Erg was specifically reduced to disomy using the Mld2 allele

ABSTRACT: Down syndrome (DS), with trisomy of chromosome 21 (HSA21), is the commonest human aneuploidy. Pre-leukemic myeloproliferative changes in DS fetal livers precedes the acquisition of GATA1 mutations, transient myeloproliferative disorder (DS-TMD) and acute megakaryocytic leukemia (DS-AMKL). Trisomy of the Erg gene is required for myeloproliferation in the Ts(1716)65Dn DS mouse model. We demonstrate here that genetic changes due trisomy of Erg lead to lineage priming of primitive and early multipotential progenitor cells in Ts(1716)65Dn mice, excess megakaryocyte-erythroid progenitors, and malignant myeloproliferation. Correlation of gene expression changes caused by Erg trisomy in Ts(1716)65Dn multilineage progenitor cells with those associated with trisomy 21 in human DS HSCs support a role for ERG as a regulator of hematopoietic lineage potential, trisomy of which drives pre-leukemic changes in DS fetal livers that predispose to subsequent DS-TMD and DS-AMKL.

INSTRUMENT(S): MouseWG-6_V2_0_R1_11278593_A

ORGANISM(S): Mus musculus

SUBMITTER: Ashley Ng

PROVIDER: E-MTAB-2574 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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