Volume 128, Issue 3 pp. 962-966
Zuschrift

The Plasma Membrane as a Reservoir, Protective Shield, and Light-Triggered Launch Pad for Peptide Therapeutics

Colin P. O'Banion

Colin P. O'Banion

Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry, and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Dr. Luong T. Nguyen

Dr. Luong T. Nguyen

Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry, and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Prof. Qunzhao Wang

Prof. Qunzhao Wang

Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry, and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Prof. Melanie A. Priestman

Prof. Melanie A. Priestman

Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry, and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Prof. Stephen P. Holly

Prof. Stephen P. Holly

Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Prof. Leslie V. Parise

Prof. Leslie V. Parise

Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
Prof. David S. Lawrence

Corresponding Author

Prof. David S. Lawrence

Department of Chemistry, Division of Chemical Biology and Medicinal Chemistry, and Department of Pharmacology, University of North Carolina, Chapel Hill, NC, 27599 USA

Search for more papers by this author
First published: 04 December 2015
Citations: 2

Abstract

Although peptide-based therapeutics are finding increasing application in the clinic, extensive structural modification is typically required to prevent their rapid degradation by proteases in the blood. We have evaluated the ability of erythrocytes to serve as reservoirs, protective shields (against proteases), and light-triggered launch pads for peptides. We designed lipidated peptides that are anchored to the surface of red blood cells, which furnishes a protease-resistant environment. A photocleavable moiety is inserted between the lipid anchor and the peptide backbone, thereby enabling light-triggered peptide release from erythrocytes. We have shown that a cell-permeable peptide, a hormone (melanocyte stimulating hormone), and a blood-clotting agent can be anchored to erythrocytes, protected from proteases, and photolytically released to create the desired biological effect.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.