To mimic amino acid starvation environment, human lung adenocarcinoma epithelial cells (A549) were cultured in Earle's balanced salt solution (EBSS) medium as a starvation model.[1, 8] Fluorescein isothiocyanate‐conjugated bovine serum albumin (FITC‐BSA) was employed as a fluorescent biomarker to trace protein internalization. This evidence concerns the gene ALB and lung adenocarcinoma.