Prylutska, Svitlana V.: Complex of C₆₀ fullerene with doxorubicin as a promising agent in antitumor therapy

Abstract in English:

The main aim of this work was to evaluate the effect of doxorubicin in complex with C₆₀ fullerene (C₆₀ + Dox) on the growth and metastasis of Lewis lung carcinoma in mice and to perform a primary screening of the potential mechanisms of C₆₀ + Dox complex action. We found that volume of tumor from mice treated with the C₆₀ + Dox complex was 1.4 times less than that in control untreated animals. The number of metastatic foci in lungs of animals treated with C₆₀ + Dox complex was two times less than that in control untreated animals. Western blot analysis of tumor lysates revealed a significant decrease in the level of heat-shock protein 70 in animals treated with C₆₀ + Dox complex. Moreover, the treatment of tumor-bearing mice was accompanied by the increase of cytotoxic activity of immune cells. Thus, the potential mechanisms of antitumor effect of C₆₀ + Dox complex include both its direct action on tumor cells by inducing cell death and increasing of stress sensitivity and an immunomodulating effect. The obtained results provide a scientific basis for further application of C₆₀ + Dox nanocomplexes as treatment agents in cancer chemotherapy.