PMID- 26623948 OWN - NLM STAT- MEDLINE DCOM- 20161005 LR - 20161230 IS - 1526-4602 (Electronic) IS - 1525-7797 (Linking) VI - 17 IP - 1 DP - 2016 Jan 11 TI - Skin Penetrating Peptide as a Tool to Enhance the Permeation of Heparin through Human Epidermis. PG - 46-55 LID - 10.1021/acs.biomac.5b01524 [doi] AB - This study aimed to identify a new skin penetrating peptide (SPP) able to enhance unfractionated heparin (UFH) permeation through human epidermis by screening a phage display peptide library. The effects of the synthesized heptapeptide (DRTTLTN) on human stratum corneum organization were investigated by ATR-FTIR spectroscopy and molecular dynamics simulation. The DRTTLTN penetration within the human epidermis caused both a fluidization of the stratum corneum lipids and the extension of keratins due to the increase of the contribution of alpha-helices. The coadministration of DRTTLTN with UFH resulted ineffective in increasing skin penetration due to UFH affinity for keratins. The conjugation of DRTTLTN to UFH by N-(3-(dimethylamino)propyl)-N'-ethylcarbodiimide hydrochloride and sodium N-hydroxysulfosuccinimide led to an increase of the flux of 24-36-fold with respect to raw UFH, depending on the adopted synthetic procedure. The new compounds showed a decrease of the antifactor Xa activity of about 4-5 times. DRTTLTN also permitted to increase the fluxes of small model molecules. In conclusion, these data support the use of SPP to enhance the skin penetration of poorly absorbed compounds even in the case of macromolecules as polysaccharides. FAU - Gennari, Chiara G M AU - Gennari CG AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Franze, Silvia AU - Franze S AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Pellegrino, Sara AU - Pellegrino S AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Corsini, Emanuela AU - Corsini E AD - Department of Pharmacological and Biomolecular Sciences, Universita degli Studi di Milano , Via Giuseppe Balzaretti, 9-20133 Milan, Italy. FAU - Vistoli, Giulio AU - Vistoli G AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Montanari, Luisa AU - Montanari L AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Minghetti, Paola AU - Minghetti P AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. FAU - Cilurzo, Francesco AU - Cilurzo F AD - Department of Pharmaceutical Sciences, Universita degli Studi di Milano , Via Giuseppe Colombo, 71-20133 Milan, Italy. LA - eng PT - Journal Article DEP - 20151214 PL - United States TA - Biomacromolecules JT - Biomacromolecules JID - 100892849 RN - 0 (Lipids) RN - 0 (Peptide Library) RN - 0 (Peptides) RN - 68238-35-7 (Keratins) RN - 9005-49-6 (Heparin) SB - IM MH - Adult MH - Epidermis/*metabolism MH - Female MH - Heparin/chemistry/*metabolism MH - Humans MH - Keratins/metabolism MH - Lipids/physiology MH - Middle Aged MH - Peptide Library MH - Peptides/*metabolism MH - Permeability/drug effects MH - Skin/*metabolism MH - Skin Absorption/drug effects MH - Spectroscopy, Fourier Transform Infrared/methods EDAT- 2015/12/02 06:00 MHDA- 2016/10/07 06:00 CRDT- 2015/12/02 06:00 PHST- 2015/12/02 06:00 [entrez] PHST- 2015/12/02 06:00 [pubmed] PHST- 2016/10/07 06:00 [medline] AID - 10.1021/acs.biomac.5b01524 [doi] PST - ppublish SO - Biomacromolecules. 2016 Jan 11;17(1):46-55. doi: 10.1021/acs.biomac.5b01524. Epub 2015 Dec 14.