Lipo-Oligomer Nanoformulations for Targeted Intracellular Protein Delivery Peng Zhang, Benjamin Steinborn, Ulrich Lächelt, Stefan Zahler, and Ernst Wagner* Pharmaceutical Biotechnology, Center for System-based Drug Research Center for NanoScience (CeNS), Ludwig-Maximilians-Universität Munich 81377, Germany E-mail: ernst.wagner@cup.uni-muenchen.de