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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Stem Cells. 2015 Jul 24;33(11):3382–3396. doi: 10.1002/stem.2100

Figure 7. Model of glycerophosholipids-activated Tlr4-MyD88 signaling in HSC differentiation.

Figure 7

Overproduced glycerophosholipids, including phosphocholine (PC), phosphoethanolamine (PE) and phosposerine (PS), in Fanca−/− and Fancd2−/− MSCs may act as ligands to activate Tlr4 receptor in co-cultured WT HSC. Tlr4 in turn signals through MyD88 to activate an NF-kB transcriptional program that leads to upregulation of myeloid-specific gene expression and consequently abnormal myeloid differentiation.