Ariadne Genomics Inc. phosphatidylinositol 3-kinase-Akt signaling pathway Crkl The extracellular signal-regulated RAF/MEK/ERK pathway PY1356 PY1349 Src Cbl Met Hgf p-tyr Gab1 Grb2 Pik3r1 Shc1 Pptn11 Sos Plcg1