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Int. J. Environ. Res. Public Health 2015, 12(10), 12543-12555; doi:10.3390/ijerph121012543

Developing a Dissociative Nanocontainer for Peptide Drug Delivery

Hunter College and The Graduate Center, City University of New York, Belfer Research Building, 413 E. 69th Street, New York, NY 10021, USA
Stem Cell and Regenerative Biology Department, Harvard University, 7 Divinity Ave, Cambridge, MA 02138, USA
Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405, USA
The American Museum of Natural History, Central Park West & 79th Street, New York, NY 10024, USA
Author to whom correspondence should be addressed.
Academic Editor: Huang-Tsung Chang
Received: 17 August 2015 / Revised: 23 September 2015 / Accepted: 28 September 2015 / Published: 9 October 2015
View Full-Text   |   Download PDF [1745 KB, uploaded 9 October 2015]   |  


The potency, selectivity, and decreased side effects of bioactive peptides have propelled these agents to the forefront of pharmacological research. Peptides are especially promising for the treatment of neurological disorders and pain. However, delivery of peptide therapeutics often requires invasive techniques, which is a major obstacle to their widespread application. We have developed a tailored peptide drug delivery system in which the viral capsid of P22 bacteriophage is modified to serve as a tunable nanocontainer for the packaging and controlled release of bioactive peptides. Recent efforts have demonstrated that P22 nanocontainers can effectively encapsulate analgesic peptides and translocate them across blood-brain-barrier (BBB) models. However, release of encapsulated peptides at their target site remains a challenge. Here a Ring Opening Metathesis Polymerization (ROMP) reaction is applied to trigger P22 nanocontainer disassembly under physiological conditions. Specifically, the ROMP substrate norbornene (5-Norbornene-2-carboxylic acid) is conjugated to the exterior of a loaded P22 nanocontainer and Grubbs II Catalyst is used to trigger the polymerization reaction leading to nanocontainer disassembly. Our results demonstrate initial attempts to characterize the ROMP-triggered release of cargo peptides from P22 nanocontainers. This work provides proof-of-concept for the construction of a triggerable peptide drug delivery system using viral nanocontainers. View Full-Text
Keywords: peptide therapeutics; nanocontainers; drug delivery; P22 bacteriophage; viral capsid; ROMP; controlled disassembly; triggered release; Grubbs catalyst; venom peptides peptide therapeutics; nanocontainers; drug delivery; P22 bacteriophage; viral capsid; ROMP; controlled disassembly; triggered release; Grubbs catalyst; venom peptides

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kelly, P.; Anand, P.; Uvaydov, A.; Chakravartula, S.; Sherpa, C.; Pires, E.; O’Neil, A.; Douglas, T.; Holford, M. Developing a Dissociative Nanocontainer for Peptide Drug Delivery. Int. J. Environ. Res. Public Health 2015, 12, 12543-12555.

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