Nanoparticles coated with extracellular matrix (ECM) are provided, in some aspects, for the delivery of a therapeutic protein, nucleic acid, or drug. In some embodiments, the nanoparticles are delivered to a subject via inhalation or aerosol delivery. Also provided, in some aspects, are methods for treating acute lung injury comprising administering α-Klotho (αKlotho) protein or DNA to a subject.
