CD44 and neoplasm: HA‐PBLG‐Gef/SAHA NPs prepared by hyaluronan‐b‐poly(γ‐benzyl‐l‐glutamate) copolymer self‐assembly were internalized by tumor cells through CD44‐mediated endocytosis; the release of Gef and SAHA after intrapulmonary administration synergistically inhibited NSCLC progression.[108]