Noninvasive In Vivo Imaging to Follow Bacteria Engaged in Cancer Therapy.

Non-invasive in vivo imaging represents a powerful tool to monitor cellular and molecular processes in the living animal. In the special case of bacteria-mediated cancer therapy using bioluminescent bacteria, it opens up the possibility to follow the course of the microorganisms into the tumor via the circulation. The mechanism by which bacteria elicit their anti-tumor potential is not completely understood. However, this knowledge is crucial to improve bacteria as an anti-cancer tool that can be introduced into the clinic. For the study of these aspects, in vivo imaging can be considered a key technology.