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 - 3 of 3 results

A split CRISPR-Cpf1 platform for inducible genome editing and gene activation.

blue Magnets HEK293T HeLa mouse in vivo Nucleic acid editing
Nat Chem Biol, 12 Aug 2019 DOI: 10.1038/s41589-019-0338-y Link to full text
Abstract: The CRISPR-Cpf1 endonuclease has recently been demonstrated as a powerful tool to manipulate targeted gene sequences. Here, we performed an extensive screening of split Cpf1 fragments and identified a pair that, combined with inducible dimerization domains, enables chemical- and light-inducible genome editing in human cells. We also identified another split Cpf1 pair that is spontaneously activated. The newly generated amino and carboxyl termini of the spontaneously activated split Cpf1 can be repurposed as de novo fusion sites of artificial effector domains. Based on this finding, we generated an improved split dCpf1 activator, which has the potential to activate endogenous genes more efficiently than a previously established dCas9 activator. Finally, we showed that the split dCpf1 activator can efficiently activate target genes in mice. These results demonstrate that the present split Cpf1 provides an efficient and sophisticated genome manipulation in the fields of basic research and biotechnological applications.

Emerging approaches for spatiotemporal control of targeted genome with inducible CRISPR-Cas9.

blue cyan near-infrared red Cryptochromes Fluorescent proteins LOV domains Phytochromes Review
Anal Chem, 21 Nov 2017 DOI: 10.1021/acs.analchem.7b04757 Link to full text
Abstract: The breakthrough CRISPR (clustered regularly interspaced short palindromic repeats)-Cas9 (CRISPR-associated protein 9) nuclease has revolutionized our ability in genome engineering. Although Cas9 is already a powerful tool for simple and efficient target endogenous gene manipulation, further engineering of Cas9 will improve the performance of Cas9, such as gene-editing efficiency and accuracy in vivo, and expand the application possibility of this Cas9 technology. The emerging inducible Cas9 methods, which can control the activity of Cas9 using an external stimulus such as chemicals and light, have the potential to provide spatiotemporal gene manipulation in user-defined cell population at a specific time and improve the accuracy of Cas9-mediated genome editing. In this review, we focus on the recent advance in inducible Cas9 technologies, especially light-inducible Cas9, and related methodologies, and also discuss future directions of this emerging tools.

CRISPR-Cas9-based photoactivatable transcription systems to induce neuronal differentiation.

blue CRY2/CIB1 Magnets HEK293T HeLa human fetal fibroblasts human IPSCs Cell differentiation Endogenous gene expression
Nat Methods, 11 Sep 2017 DOI: 10.1038/nmeth.4430 Link to full text
Abstract: Our improved CRISPR-Cas9-based photoactivatable transcription systems, CPTS2.0 and Split-CPTS2.0, enable high blue-light-inducible activation of endogenous target genes in various human cell lines. We achieved reversible activation of target genes with CPTS2.0 and induced neuronal differentiation in induced pluripotent stem cells (iPSCs) by upregulating NEUROD1 with Split-CPTS2.0.
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