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Peptide gH625 enters into neuron and astrocyte cell lines and crosses the blood–brain barrier in rats

Authors Valiante S, Falanga A, Cigliano L, Iachetta G, Busiello RA, La Marca V, Galdiero M, Lombardi A, Galdiero S

Received 19 November 2014

Accepted for publication 29 December 2014

Published 10 March 2015 Volume 2015:10(1) Pages 1885—1898

DOI https://doi.org/10.2147/IJN.S77734

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Thomas J Webster

Salvatore Valiante,1,* Annarita Falanga,2,3,* Luisa Cigliano,1 Giuseppina Iachetta,1 Rosa Anna Busiello,1 Valeria La Marca,1 Massimiliano Galdiero,4 Assunta Lombardi,1 Stefania Galdiero1,2

1Department of Biology, 2Department of Pharmacy, 3DFM Scarl, University of Naples Federico II, 4Department of Experimental Medicine, II University of Naples, Naples, Italy

*These authors contributed equally to this paper and are considered joint first authors

Abstract: Peptide gH625, derived from glycoprotein H of herpes simplex virus type 1, can enter cells efficiently and deliver a cargo. Nanoparticles armed with gH625 are able to cross an in vitro model of the blood–brain barrier (BBB). In the present study, in vitro experiments were performed to investigate whether gH625 can enter and accumulate in neuron and astrocyte cell lines. The ability of gH625 to cross the BBB in vivo was also evaluated. gH625 was administered in vivo to rats and its presence in the liver and in the brain was detected. Within 3.5 hours of intravenous administration, gH625 can be found beyond the BBB in proximity to cell neurites. gH625 has no toxic effects in vivo, since it does not affect the maximal oxidative capacity of the brain or the mitochondrial respiration rate. Our data suggest that gH625, with its ability to cross the BBB, represents a novel nanocarrier system for drug delivery to the central nervous system. These results open up new possibilities for direct delivery of drugs into patients in the field of theranostics and might address the treatment of several human diseases.

Keywords: drug delivery, neurons, astrocytes, blood–brain barrier, peptide

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