(A) Bioluminescence data of mice treated with control diet, SPC, TMZ (5 mg/kg, 2 consecutive days) alone, or in combination. (B) TMZ alone or in combination with SPC diet effectively reduced tumor growth at early stages of tumor development. (C–D) Bioluminescence showing regrowth of tumors following TMZ treatment, but not after a combination of TMZ and SPC diet. (E) Kaplan-Meier (n=9 for control, n=8 for SPC, n=9 for TMZ and n=7 for SPC + TMZ, **P < 0.01; Log-rank Mantel-Cox test) curve displays regrowth after ~50 days post-TMZ treatment. Tumors in mice treated with a combination of SPC and TMZ never displayed regrowth.