Transcriptomics

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Comparative analysis of Tet2 catalytic deficient and knockout bone marrow over time


ABSTRACT: In this study, we investigated the role of Tet2 in regulation of hematopoietic genes by performing transcriptomic analysis of Tet2 WT, Mut, and KO LSK and Lin– cells at 3, 6, 9, and 12 months by RNA-seq, and mapping the DNA methylation landscape of 3-month-old Tet2 WT, Mut, and KO LSK and Lin– cells. (1) We find that loss of Tet2 (Tet2 KO) vs. a loss of Tet2 catalytic function (Tet2 Mut) at different time points and cell types causes distinct gene expression changes when compared to WT samples as assessed by RNA-seq. (2) Additionally, we find that many genes implicated in lymphoma and leukemia are deregulated in Tet2 Mut and KO LSK and Lin– cells, consistent with the phenotypes observed in mice transplanted with Tet2 Mut and KO bone marrow. (3) We also mapped genome-wide DNA methylation levels of WT, Tet2 Mut, and KO LSK and Lin– cells at 3 months by WGBS and establish a role for Tet2 in demethylating genes implicated in lymphoma and leukemia initiation and progression.

ORGANISM(S): Mus musculus

PROVIDER: GSE227977 | GEO | 2023/06/01

REPOSITORIES: GEO

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