Functionalized nanoparticles have been explored for cancer treatment, as a mean to efficiently deliver the anti-cancer drugs to tumor-site, improving the outcome of those molecules. In this work, polymericpoly(lactic-co-glycolic)-polyethyleneglicol (PLGA-PEG) nanoparticles were produced and surface-functionalized with an antibody targeting the Carcinoembryonic Antigen (CEA) of intestinal epithelial cells. CEA is overexpressed in several cancers, including colorectal cancer. Nanoparticles were loaded with paclitaxel (PTX), an anticancer drug.