SLC16A1 and cancer: The cancer cells can use exogeneous lactate to fuel the tricarboxylic acid cycle (TCA) and oxidative phosphorylation (OXPHOS) and monocarboxylate transporter 1 (MCT1) is a key transporter for the uptake of lactate into cells;19 therefore, we used MCT1 inhibitor a‐cyano‐4‐hydroxycinnamate (CHC) to block lactate transport.