This scientific article needs additional citations to secondary or tertiary sources (November 2016) Protein-bound paclitaxel, also known as nanoparticle albumin–bound paclitaxel or nab-paclitaxel, is an injectable formulation of paclitaxel used to treat breast cancer, lung cancer and pancreatic cancer, among others. Paclitaxel destroys cancer cells by preventing the normal breakdown of microtubules during cell division.