Ursolic acid promotes cancer cell death by inducing Atg5?dependent autophagy

S Leng, Y Hao, D Du, S Xie, L Hong… - … Journal of Cancer, 2013 - Wiley Online LibraryUrsolic acid is found in many plants as well as in many fruits and herbs including apples, basil, billberries, cranberries, peppermint, rosemary, lavender, oregano, thyme, hawthorn and prunes. This acid is found particularly high in apple peels, according to wikipedia.Ursolic acid is abailable as a dietary supplement.Here is another report on ursolic acid and cancer inhibition.

Ursolic acid induces cell death and modulates autophagy through JNK pathway in apoptosis-resistant colorectal cancer cells

CPR Xavier, CF Lima, DFN Pedro, JM Wilson… - The Journal of nutritional …, 2013 - Elsevier