ELAVL1 and cancer: We manipulated pp32 expression levels (Figure 4A) in isogenic cancer cells and then quantitatively assessed the association of known HuR mRNA targets dCK [23], vascular endothelial growth factor (VEGF) [27], and HuR [28] mRNAs with HuR by ribonucleoprotein immunoprecipitation (RNP-IP) assay as described previously [23].