Fig. 6From: bFGF-mediated pluripotency maintenance in human induced pluripotent stem cells is associated with NRAS-MAPK signalingProposed model for bFGF signaling in pluripotent (green) vs. differentiated (orange) hiPSCs (for details see discussion). bFGF, basic fibroblast growth factor; OCT4, octamer-binding transcription factor 4; SOX2, sex determining region Y-box 2; GFAP, glial fibrillary acidic protein; RAS, rat sarcoma; PI3K, phosphoinositide 3-kinase; PDK1, 3-phosphoinositidedependent protein kinase; MEK, MAP/ERK kinase; ERK, extracellular signal-regulated kinase; JAK, Janus kinase; STAT3, signal transducer and activator of transcription 3Back to article page