Dietary impacts on prostate cancer immunotherapy

Area of Science:

• Oncology
• Immunology
• Nutritional Science

Background:

• Advanced prostate cancer has limited treatment options and a poor prognosis.
• Prostate tumors often have a "cold" microenvironment, hindering immunotherapy effectiveness.
• Dietary interventions are emerging as a strategy to modulate the tumor microenvironment.

Purpose of the Study:

• To review and integrate findings on dietary modulation of prostate cancer immunity.
• To explore mechanistic insights for augmenting immunotherapy with dietary strategies.
• To suggest potential combination therapies involving diet and immunotherapy.

Main Methods:

• Literature review of preclinical and early clinical studies.
• Synthesis of recent findings on dietary interventions and prostate cancer immunity.
• Focus on mechanistic understanding of diet-tumor microenvironment interactions.

Main Results:

• Ketogenic diets, methionine restriction, and mushroom extracts can alter the tumor microenvironment.
• Diet-derived factors like β-hydroxybutyrate show direct anti-tumor immune effects.
• Dietary interventions show promise in enhancing immunotherapy responses.

Conclusions:

• Dietary modulation offers a promising approach to overcome immunotherapy resistance in prostate cancer.
• Combining dietary interventions with immunotherapy may represent a novel therapeutic strategy.
• Further translational research is needed to optimize these combination approaches.