Dr. Gian Luigi Russo
Research Director, National Research Council
Italy
Biography
Doctorate in Biochemistry. Post-doc at Cold Spring Harbor Laboratory (NY, USA). Awarded as Fulbright Research Scholar at Stony Brook University (NY, USA). Clarivate Highly Cited Researchers 2021. Top 2% most widely cited scientists—the World’s Top 2% from Stanford University (2022-2025). Order of Merit of the Italian Republic (5th Class/Knight). Currently, Research Director at the National Research Council in Italy where he laid the groundwork on how several non-nutritional components present in the regular diet, or molecules derived from food transformation, exert, at the molecular level, a protective effect on degenerative pathologies including cancer.
Title: Beyond Antioxidants: The Real Anticancer Logic of Phytochemicals
Abstract
The anticancer activity of dietary phytochemicals has often been framed as antioxidant action, yet contemporary evidence points to a broader, context-dependent capacity to modulate tumor and host networks. This lecture synthesizes mechanistic principles with translational realities to reconcile a persistent paradox: robust anticancer signals in cell and animal models versus weak or inconsistent outcomes in primary/secondary prevention trials. Limited bioavailability and extensive first-pass metabolism, while contributory, do not fully explain this gap. Additional determinants include the hormetic, dose-time-matrix dependence of responses; the coexistence of antioxidant and pro-oxidant effects; and the differential goals and dosing of treatment versus prevention paradigms. Drawing on literature and our group’s work, I will illustrate how phytochemicals function as signaling rheostats, finely tuning redox-sensitive and stress-response pathways. This reframing moves past broad “antioxidant” narratives to emphasize the precision use of phytochemicals as context-dependent modulators of malignant networks.