Regulation of Intestinal Butyrate Transporters by Oxidative and Inflammatory Status

Area of Science:

• Gastroenterology
• Molecular Biology
• Cell Biology

Background:

• Butyrate, a metabolite from gut microbiota, offers significant benefits in the colon.
• Its relevance is particularly noted in colorectal cancer (CRC) and inflammatory bowel disease (IBD).
• Butyrate transport across colonic epithelial cells is critical for its therapeutic effects.

Purpose of the Study:

• To investigate the mechanisms of butyrate transport across colonic epithelial cells.
• To explore the modulation of butyrate transporters by redox and inflammatory status.
• To assess the potential of butyrate transporters as therapeutic targets in intestinal diseases.

Main Methods:

• Focus on uptake transporters: monocarboxylate transporter 1 (MCT1) and sodium-coupled monocarboxylate transporter 1 (SMCT1).
• Focus on efflux transporters: breast cancer resistance protein (BCRP) and MCT1/monocarboxylate transporter 4 (MCT4).
• Review of existing data on the modulation of these transporters by oxidative stress and inflammation.

Main Results:

• Data suggest butyrate transporters (MCT1, SMCT1, BCRP, MCT4) are influenced by redox and inflammatory status.
• Evidence for this modulation is currently scarce and inconsistent.
• Nuclear factor erythroid 2-related factor 2 (Nrf2), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) may play roles in mediating these effects on MCT1 and SMCT1.

Conclusions:

• Butyrate transport mechanisms are vital for its beneficial effects in the colon.
• Increased oxidative stress and inflammation in conditions like CRC and IBD impact butyrate transporters.
• Further investigation is warranted to establish these transporters as potential cellular targets for treating intestinal diseases.