Transdermal delivery of human epidermal growth factor facilitated by a peptide chaperon.

Peptide chaperon TD1 was discovered to facilitate several proteins' transdermal delivery via topical co-administration. To design a practical, safe system for advanced transdermal peptide, a novel method was carried out. Human epidermal growth factor (hEGF) was selected as the model biological agent and a fusion protein: TD1-hEGF was designed. Study showed that TD1-hEGF not only had the similar bioactivity with native hEGF, but also possessed considerable higher transdermal ability than hEGF and a co-administration of TD1 and hEGF. These results provided convincing evidence for the advantages of TD1-hEGF in cosmetic and medical applications. Moreover, the fusion pattern between the cargoes and TD1 offered a new approach to facilitate other hydrophilic drugs' transdermal delivery for therapeutic application.