Application of Biomimetic SPIONs in Targeted Lung Cancer Therapy: Cell-Membrane Camouflage Technology and Lung Retention Enhancement Strategies.

Lung cancer remains the leading cause of cancer mortality, hindered by drug resistance, limited targeting, and low immunotherapy response. This review presents biomimetic superparamagnetic iron-oxide nanoparticles (SPIONs) as a next-generation theranostic platform. By cloaking SPIONs with cell membranes-macrophage, neutrophil, or cancer cell-we endow them with biological targeting, immune evasion, and deep lung penetration. Coupled with magnetic field-guided retention and real-time imaging, these systems enable precision hyperthermia, on-demand drug release, and immune microenvironment reprogramming. We critically compare membrane types, outline translational challenges, and propose a regulatory-aligned safety framework. This biomimetic strategy offers a dual diagnostic-therapeutic solution for lung cancer and potentially other solid tumors.