I am looking to measure TCF/LEF vs FOXO activation by beta catenin and would like to use q rt PCR but I don't know what the standard target genes are that I could reliably probe for.
The web of Wnt signalling! There is no "standard" set of target genes (that I know of) that are transcribed (or inhibited) upon TCF/LEF activation via beta-catenin. It mostly depend on the cell type you are using, by what means you are stimulating beta-catenin activity and why you are activating this pathway. Does that make sense?! Looking at FOXO as well, I'm guessing its bone-related??
Actually neural stem cells, as wnt signalling is a primary growth pathway. Since asking the question i have simply used reporter assays, and targets for the specific function i was investigating like foxo and c-myc