Targeted Subcellular Protein Delivery Using Cleavable Cyclic Cell-Penetrating Peptide-Conjugates

Overview

Journal Methods Mol Biol

Specialty Molecular Biology

Date 2021 Aug 13

PMID 34386966

Citations 1

Authors

Luise Franz

Anselm F L Schneider

Christian P R Hackenberger

Affiliations

Soon will be listed here.

Abstract

Proteins conjugated to cyclic cell-penetrating peptides (cCPPs) haAbstractve been shown to be effectively taken up by living cells. Conjugation of proteins to cCPPs in a cleavable manner leads to localization in the cytosol and immediate bioavailability of the protein after uptake. Here we describe how mCherry, a fluorescent protein, can be targeted to a membrane-bound compartment, the nucleus, and a subcellular structure like the actin cytoskeleton after cCPP-mediated uptake into living cells. Targeting peptides are genetically fused to the mCherry protein sequence and the protein is conjugated to the cCPP via a cleavable disulfide bond. Localization of mCherry in the nucleus or the actin skeleton respectively can be observed by live cell confocal fluorescence microscopy.

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PMID: 34694961 PMC: 9359368. DOI: 10.1080/21688370.2021.1995285.

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