Abstract:
:Fatty acids (FAs) are not only essential components of cellular energy storage and structure, but play crucial roles in signalling. Here we present a toolkit of photoswitchable FA analogues (FAAzos) that incorporate an azobenzene photoswitch along the FA chain. By modifying the FAAzos to resemble capsaicin, we prepare a series of photolipids targeting the Vanilloid Receptor 1 (TRPV1), a non-selective cation channel known for its role in nociception. Several azo-capsaicin derivatives (AzCAs) emerge as photoswitchable agonists of TRPV1 that are relatively inactive in the dark and become active on irradiation with ultraviolet-A light. This effect can be rapidly reversed by irradiation with blue light and permits the robust optical control of dorsal root ganglion neurons and C-fibre nociceptors with precision timing and kinetics not available with any other technique. More generally, we expect that photolipids will find many applications in controlling biological pathways that rely on protein-lipid interactions.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Frank JA,Moroni M,Moshourab R,Sumser M,Lewin GR,Trauner Ddoi
10.1038/ncomms8118subject
Has Abstractpub_date
2015-05-22 00:00:00pages
7118issn
2041-1723pii
ncomms8118journal_volume
6pub_type
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