ErbB2 is an excellent target for
cancer therapies because its
overexpression was found in about 30% of breast cancers and correlated with poor prognosis of the patients. Unfortunately, current therapies for ErbB2-positive breast cancers remain unsatisfying due to side effects and resistance, and new therapies for ErbB2 overexpressing breast cancers are needed. Peptide/protein therapy using
cell-penetrating peptides (CPPs) as carriers is promising because the internalization is highly efficient and the cargos can be bioactive. The major obstacle in using CPPs for therapy is their lack of specificity. We sought to develop a peptide carrier specifically introducing therapeutics to