NRP1 and triple-negative breast carcinoma: Mar í a Victoria Cano Cortes et al. designed three functional nanoparticles, namely, the chemotherapeutic drug DOX, NIR cyanine dye Cy7, and CRGDK homing peptide that specifically binds to neuropilin-1 (Nrp-1) overexpressed on triple-negative breast cancer (TNBC) cells.