Blue-Light Receptors for Optogenetics

Aba Losi, Kevin H Gardner, Andreas Möglich

Research output: Contribution to journalReview article

20 Citations (Scopus)

Abstract

Sensory photoreceptors underpin light-dependent adaptations of organismal physiology, development, and behavior in nature. Adapted for optogenetics, sensory photoreceptors become genetically encoded actuators and reporters to enable the noninvasive, spatiotemporally accurate and reversible control by light of cellular processes. Rooted in a mechanistic understanding of natural photoreceptors, artificial photoreceptors with customized light-gated function have been engineered that greatly expand the scope of optogenetics beyond the original application of light-controlled ion flow. As we survey presently, UV/blue-light-sensitive photoreceptors have particularly allowed optogenetics to transcend its initial neuroscience applications by unlocking numerous additional cellular processes and parameters for optogenetic intervention, including gene expression, DNA recombination, subcellular localization, cytoskeleton dynamics, intracellular protein stability, signal transduction cascades, apoptosis, and enzyme activity. The engineering of novel photoreceptors benefits from powerful and reusable design strategies, most importantly light-dependent protein association and (un)folding reactions. Additionally, modified versions of these same sensory photoreceptors serve as fluorescent proteins and generators of singlet oxygen, thereby further enriching the optogenetic toolkit. The available and upcoming UV/blue-light-sensitive actuators and reporters enable the detailed and quantitative interrogation of cellular signal networks and processes in increasingly more precise and illuminating manners.

Original languageEnglish (US)
Pages (from-to)10659-10709
Number of pages51
JournalChemical Reviews
Volume118
Issue number21
DOIs
StatePublished - Nov 14 2018
Externally publishedYes

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Actuators
Signal transduction
Singlet Oxygen
Proteins
Physiology
Enzyme activity
Gene expression
Association reactions
Ions
Apoptosis
DNA
Transcend

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Blue-Light Receptors for Optogenetics. / Losi, Aba; Gardner, Kevin H; Möglich, Andreas.

In: Chemical Reviews, Vol. 118, No. 21, 14.11.2018, p. 10659-10709.

Research output: Contribution to journalReview article

Losi, Aba ; Gardner, Kevin H ; Möglich, Andreas. / Blue-Light Receptors for Optogenetics. In: Chemical Reviews. 2018 ; Vol. 118, No. 21. pp. 10659-10709.
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