Curated Optogenetic Publication Database

Search precisely and efficiently by using the advantage of the hand-assigned publication tags that allow you to search for papers involving a specific trait, e.g. a particular optogenetic switch or a host organism.

Showing 1 - 5 of 5 results
1.

Green-Light-Induced Inactivation of Receptor Signaling Using Cobalamin-Binding Domains.

green MxCBD TtCBD HEK293 zebrafish in vivo Signaling cascade control Developmental processes
Angew Chem Int Ed Engl, 20 Mar 2017 DOI: 10.1002/anie.201611998 Link to full text
Abstract: Optogenetics and photopharmacology provide spatiotemporally precise control over protein interactions and protein function in cells and animals. Optogenetic methods that are sensitive to green light and can be used to break protein complexes are not broadly available but would enable multichromatic experiments with previously inaccessible biological targets. Herein, we repurposed cobalamin (vitamin B12) binding domains of bacterial CarH transcription factors for green-light-induced receptor dissociation. In cultured cells, we observed oligomerization-induced cell signaling for the fibroblast growth factor receptor 1 fused to cobalamin-binding domains in the dark that was rapidly eliminated upon illumination. In zebrafish embryos expressing fusion receptors, green light endowed control over aberrant fibroblast growth factor signaling during development. Green-light-induced domain dissociation and light-inactivated receptors will critically expand the optogenetic toolbox for control of biological processes.
2.

A Phytochrome Sensory Domain Permits Receptor Activation by Red Light.

red Cph1 HEK293 Signaling cascade control
Angew Chem Int Ed Engl, 21 Apr 2016 DOI: 10.1002/anie.201601736 Link to full text
Abstract: Optogenetics and photopharmacology enable the spatio-temporal control of cell and animal behavior by light. Although red light offers deep-tissue penetration and minimal phototoxicity, very few red-light-sensitive optogenetic methods are currently available. We have now developed a red-light-induced homodimerization domain. We first showed that an optimized sensory domain of the cyanobacterial phytochrome 1 can be expressed robustly and without cytotoxicity in human cells. We then applied this domain to induce the dimerization of two receptor tyrosine kinases-the fibroblast growth factor receptor 1 and the neurotrophin receptor trkB. This new optogenetic method was then used to activate the MAPK/ERK pathway non-invasively in mammalian tissue and in multicolor cell-signaling experiments. The light-controlled dimerizer and red-light-activated receptor tyrosine kinases will prove useful to regulate a variety of cellular processes with light.
3.

Light-assisted small-molecule screening against protein kinases.

blue VfAU1-LOV HEK293 SPC212 Signaling cascade control
Nat Chem Biol, 12 Oct 2015 DOI: 10.1038/nchembio.1933 Link to full text
Abstract: High-throughput live-cell screens are intricate elements of systems biology studies and drug discovery pipelines. Here, we demonstrate an optogenetics-assisted method that avoids the need for chemical activators and reporters, reduces the number of operational steps and increases information content in a cell-based small-molecule screen against human protein kinases, including an orphan receptor tyrosine kinase. This blueprint for all-optical screening can be adapted to many drug targets and cellular processes.
4.

The optogenetic promise for oncology: Episode I.

blue LOV domains Review
Mol Cell Oncol, 29 Oct 2014 DOI: 10.4161/23723548.2014.964045 Link to full text
Abstract: As light-based control of fundamental signaling pathways is becoming a reality, the field of optogenetics is rapidly moving beyond neuroscience. We have recently developed receptor tyrosine kinases that are activated by light and control cell proliferation, epithelial-mesenchymal transition, and angiogenic sprouting-cell behaviors central to cancer progression.
5.

Spatio-temporally precise activation of engineered receptor tyrosine kinases by light.

blue AtLOV2 CrLOV1 NcWC1-LOV RsLOV VfAU1-LOV VVD CHO-K1 hBE HEK293 in vitro SPC212 Signaling cascade control Control of cytoskeleton / cell motility / cell shape
EMBO J, 1 Jul 2014 DOI: 10.15252/embj.201387695 Link to full text
Abstract: Receptor tyrosine kinases (RTKs) are a large family of cell surface receptors that sense growth factors and hormones and regulate a variety of cell behaviours in health and disease. Contactless activation of RTKs with spatial and temporal precision is currently not feasible. Here, we generated RTKs that are insensitive to endogenous ligands but can be selectively activated by low-intensity blue light. We screened light-oxygen-voltage (LOV)-sensing domains for their ability to activate RTKs by light-activated dimerization. Incorporation of LOV domains found in aureochrome photoreceptors of stramenopiles resulted in robust activation of the fibroblast growth factor receptor 1 (FGFR1), epidermal growth factor receptor (EGFR) and rearranged during transfection (RET). In human cancer and endothelial cells, light induced cellular signalling with spatial and temporal precision. Furthermore, light faithfully mimicked complex mitogenic and morphogenic cell behaviour induced by growth factors. RTKs under optical control (Opto-RTKs) provide a powerful optogenetic approach to actuate cellular signals and manipulate cell behaviour.
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