Ultrasound-triggered tumor therapy with doxorubicin-liposome-microbubble complexes in a subcutaneous murine colon adenocarcinoma model

Background/introduction Triggered release of drugs from carrier systems in vivo is widely investigated for targeted tumor therapy. During the past several years, an ultrasound-sensitive liposomemicrobubble pendant carrier has been developed: microbubbles, decorated with liposomes that carry e.g., doxorubicin, release the drug in response to ultrasound pulse. However, due to low drug load, those particles were not successful for tumor therapy in vivo. In this study, we are able to prepare particles with high doxorubicin load, and achieve successful inhibition of tumor growth in a subcutaneous murine tumor model.