Figure 2. Early hematopoietic progenitors demonstrate a rapid transcriptional response to inflammatory signals.
(A) Schematic of LPS and Pam3CSK4 time-course experiment. LT-HSCs, ST-HSCs and MPPs from 5 young and 5 aged mice were exposed to LPS and Pam3CSK4 in vitro for the indicated time after which RNA was harvested for bulk RNA-sequencing. (B) Heatmap of differentially expressed genes in young and aged hematopoietic progenitors alongside an expression map of mature bone-marrow derived dendritic cells (DCs) challenged with LPS for comparison. (C) Heatmap of NF-kB regulated inflammatory genes clustered by temporal expression patterns described previously. (D) Heatmap of cytokines expressed in early progenitors and DCs.
