PHB1 and type 2 diabetes mellitus: Cy5.5‐loaded PBP‐NPs were injected intravenously into a high‐fat diet‐induced type 2 diabetic mouse model to confirm the accumulation of PBP‐NPs into visceral white adipose tissue (vWAT) where prohibitin expression was significantly higher than subcutaneous white adipose tissue (sWAT).