Perspectives of Fullerene Derivatives in PDT and Radiotherapy of Cancers.

Nanoparticles of fullerenes and their water-soluble derivatives have been firmly introduced into solution of medical problems. Although there are still debates about their toxicity and long-term consequences of their application in the clinic, the success of fullerenes application in some sections is undeniable, in particular, in photodynamic therapy (PDT) of cancer tumors. Besides there are interesting data on radiotherapy where fullerenes appear to be more transporters than drugs, but due to own cytoprotective properties, the fullerene adducts can also participate in the combined treatment. This review evaluates the status of these sections of fullerene chemistry in terms of development and recent trends.

Effect of 67Zn-Nanoparticles on Leukemic Cells and Normal Lymphocytes.

Porphyrin-fulleren-based nanoparticles (NP), containing magnetic isotopes 25Mg, 67Zn and zinc of natural isotope composition (Zntotal-NP), have been tested on leukemic cells of patients with T-ALL, B-ALL, AML and lymphocytes of healthy donors. Reliable differences in action of magnetic and non-magnetic zinc isotopes for some types of cells were obtained. Magnetic magnesium isotopes and pure nanoparticles of porphyrinfulleren did not demonstrate any effects. 67Zn-NP induced high cytotoxicity in cells of acute B-lymphoblastic leukemia with LD50 almost three times lower, than those for healthy donors, and 4 times lower in comparison with Zntotal-NP. Also evaluation of apoptosis process in granulocytes of healthy donors in the case of the preparates were performed by method of flow cytometry.