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In vitro transfection of bone marrow-derived dendritic cells with TATp-liposomes

Authors Pappalardo JS, Langellotti CA, Di Giacomo S, Olivera V, Quattrocchi V, Zamorano PI, Hartner WC, Levchenko TS, Torchilin VP

Received 23 August 2013

Accepted for publication 10 November 2013

Published 13 February 2014 Volume 2014:9(1) Pages 963—973

DOI https://doi.org/10.2147/IJN.S53432

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 5

Juan Sebastián Pappalardo,1–3 Cecilia A Langellotti,2 Sebastián Di Giacomo,1 Valeria Olivera,1 Valeria Quattrocchi,2 Patricia I Zamorano,1,2 William C Hartner,3 Tatyana S Levchenko,3 Vladimir P Torchilin3

1Virology Institute, Center for Research in Veterinary and Agronomic Sciences, National Institute for Agricultural Technology (INTA), Hurlingham, BA, Argentina; 2National Council for Scientific and Technical Research (CONICET), Autonomous City of Buenos Aires, Argentina; 3Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA, USA

Abstract: Dendritic cells (DC) are antigen-presenting cells uniquely capable of priming naïve T cells and cross-presenting antigens, and they determine the type of immune response elicited against an antigen. TAT peptide (TATp), is an amphipathic, arginine-rich, cationic peptide that promotes penetration and translocation of various molecules and nanoparticles into cells. TATp-liposomes (TATp-L) used for DC transfection were prepared using TATp derivatized with a lipid-terminated polymer capable of anchoring in the liposomal membrane. Here, we show that the addition of TATp to DNA-loaded liposomes increased the uptake of DNA in DC. DNA-loaded TATp-L increased the in vitro transfection efficiency in DC cultures as evidenced by a higher expression of the enhanced green fluorescent protein and bovine herpes virus type 1 glycoprotein D (gD). The de novo synthesized gD protein was immunologically stimulating when transfections were performed with TATp-L, as indicated by the secretion of interleukin 6.

Keywords: dendritic cell transfection, green fluorescent protein, bovine herpes virus 1 glycoprotein D, liposomes, TAT peptide, interleukin 6

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