Metabolic Reprogramming of Cancer Cells By Phytochemicals: Multi-Target Approaches to Tumor Metabolism

Abstract

Background: Cancer cells undergo metabolic reprogramming to support rapid proliferation and survival under stress conditions, involving enhanced glycolysis (Warburg effect), glutaminolysis, and aberrant lipid metabolism. These metabolic alterations represent attractive therapeutic targets for precision oncology.

Objective: This review synthesizes current evidence on phytochemicals as multi-target agents capable of modulating cancer metabolism and overcoming therapeutic resistance through simultaneous pathway disruption.

Key Findings: Phytochemicals including flavonoids, alkaloids, terpenoids, and phenolics demonstrate unique properties enabling multi-pathway targeting unlike conventional single-target drugs. These compounds effectively modulate key metabolic nodes including glucose transporters (GLUT1), glycolytic enzymes (hexokinase 2, pyruvate kinase M2), glutaminase, and fatty acid synthesis enzymes (FASN, ACCA). Resveratrol, quercetin, curcumin, and EGCG exhibit particularly robust effects by simultaneously targeting glycolysis, glutaminolysis, lipid metabolism, and oxidative phosphorylation while modulating critical signaling pathways (PI3K/Akt/mTOR, HIF-1α, NF-κB). Beyond direct metabolic targeting, these compounds modulate the tumor microenvironment by reducing hypoxia, inflammation, and angiogenesis while enhancing immune cell function and disrupting cancer-associated fibroblast crosstalk.

Clinical Implications: Combination approaches utilizing phytochemicals with conventional metabolic inhibitors (metformin, 2-deoxy-D-glucose) demonstrate synergistic effects, enabling dose reduction and resistance prevention. The multi-target nature of phytochemicals addresses metabolic plasticity that underlies therapeutic resistance in cancer stem cells and metastatic disease.

Conclusion: Phytochemicals represent promising agents for metabolic cancer therapy through their ability to simultaneously disrupt multiple interconnected pathways, offering potential for personalized treatment strategies when integrated with precision medicine approaches and advanced drug delivery systems.