Alleviation of abnormal synaptic neurotransmitter release by cell-permeable form of the truncated SNAP-25 upon transcutaneous delivery

Tae Yoon Park, Min Jung Shin, Sung Dong Park, Sang Kyou Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)


Abnormal releases of neurotransmitters result in movement disorders such as dystonia, chorea, tics, blepharospasm and wrinkle formation, and intra-muscular injection of Botulinum neurotoxin is widely used for the treatment of these complications. But it is potentially poisonous and must be intra-muscularly injected with precision by a well-trained physician. For novel therapeutic development with high safety profile and easy skin penetration for these complications, we generated Trans-X, a cell permeable form of the truncated SNAP-25 that is one of the SNARE complex for vesicle exocytosis of neuron. Upon topical administration, Trans-X efficiently penetrated through skin, reached the dermis layer and remained stable. Trans-X, which did not show any ocular or skin allergic sensitivity, can block the pre-synaptic neurotransmitter transport via acting as a competitive inhibitor of SNARE complex formation, and effectively induced muscle paralysis comparable to BOTOX® evaluated by measuring compound muscle action potential. Topical treatment of the facial skin with Trans-X in clinical study can prevent the wrinkle formation and improve the skin roughness. Therefore, our study suggests that Trans-X may be a convenient and effective medical and cosmetic treatment for local management of movement disorder without systemic toxicity.

Original languageEnglish
Pages (from-to)52-57
Number of pages6
JournalNeuroscience Letters
Publication statusPublished - 2013 May 24


All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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