Diet plays a major role in colorectal cancer (CRC) risk, not only through direct nutritional exposure but also via its impact on the gut microbiota. A recent study by De Filippo et al. investigated this interaction using genetically modified rat models subjected to four dietary regimens associated with different levels of CRC risk: a high‑risk diet rich in red and processed meat (MBD), a normalized‑risk meat‑based diet supplemented with α‑tocopherol (MBDT), a low‑risk pesco‑vegetarian diet (PVD), and a standard control diet. By combining metabolomics, gene sequencing and tumor biomarker analysis, the study demonstrated that dietary patterns significantly influence CRC susceptibility.

Key oxidative stress biomarkers, including DHN‑MA and 8‑iso‑PGF2α, were quantified using Bertin Bioreagent ELISA kits, confirming the strong association between meat‑based diets, increased oxidative stress and higher CRC risk. In contrast, animals fed a pesco‑vegetarian diet showed a marked reduction in preneoplastic lesions and oxidative damage, highlighting the protective effect of this dietary profile.

Most importantly, the study revealed that CRC risk is largely driven by microbiota‑dependent metabolic changes. Transplantation of microbiota from meat‑fed rats into germ‑free animals was sufficient to induce preneoplastic lesions, providing direct evidence that gut microbiota acts as a key mediator between diet and colorectal cancer development.

These findings underline the need for reliable biomarkers and robust analytical tools to investigate oxidative stress and inflammation in gut health and oncology research. Bertin Bioreagent supports these studies with validated solutions including the ELISA kit and a broad range of assays dedicated to oxidative stress and inflammatory pathways.