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Remotely Activated Protein-Producing Nanoparticles Avi Schroeder,†,‡,⊥ Michael S. Goldberg,†,⊥ Christian Kastrup,†,‡,§ Yingxia Wang,‡ Shan Jiang,†,‡ Brian J. Joseph,‡ Christopher G. Levins,†,‡ Sneha T. Kannan,† Robert Langer,†,‡,∥ and Daniel G. Anderson*,†,‡,∥ †David H. Koch Institute for Integrative Cancer Research and ‡Department of Chemical Engineering, Massachusetts Institute ofTechnology, Cambridge, Massachusetts 02139, United States §Michael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver V6T 1Z4 Canada ∥Harvard MIT Division of Health Science and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States