Near infrared light activated Ru(II) complexes disrupt energy metabolism of cancer cells
摘要
Photoactivated metallic drugs provide a straightforward strategy for precise cancer phototherapy. However, the small molar extinction coefficient in the near infrared (NIR) region limits the clinical application. In this study, we report the self-assembling dinuclear tris-bidentate Ru(II) complex with NIR light absorption and emission properties. Ru2C forms a nanowire via π-π interaction with high photostability and low dark toxicity. Upon 700 nm light excitation, Ru2C exhibits synergistic type I/II photosensitization and in-cell photocatalysis activity, with high phototherapeutic effect toward cancer cell monolayers, spheroids in vitro and orthotopic 4T1 breast tumor in vivo. Both non-targeted and pseudo-targeted metabolomics analysis reveal that Ru2C disrupts the cellular metabolism including energy production and biosynthesis. This work provides a new avenue to construct self-assembling and NIR light-activated Ru(II) complexes for cancer phototherapy.