Toolkit/light-controlled CRISPR/dCAS9 transactivation system

light-controlled CRISPR/dCAS9 transactivation system

Multi-Component Switch·Research·Since 2020

Also known as: variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression

Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.

Summary

The light-controlled CRISPR/dCas9 transactivation system is a multi-component optogenetic transcriptional activator that couples CRISPR/dCas9-mediated gene activation to a light-responsive PAL–RNA aptamer interaction. It enables reversible optical control of transactivation and was described as a variation of the CRISPR/dCas9 system for light-controlled activation of gene expression.

Usefulness & Problems

Why this is useful

This platform is useful for optically controlling gene expression within a CRISPR/dCas9 framework while adding modular building blocks for synthetic biological circuit design. The reported design also reduces the coding space required for genetic manipulation, which may simplify construct payloads relative to larger multi-protein optogenetic systems.

Source:

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.

Problem solved

It addresses the problem of making CRISPR/dCas9-mediated transcriptional activation responsive to light rather than constitutively active. The cited work specifically positions the system as a reversible transactivation platform with low dark-state activity.

Problem links

Need controllable genome or transcript editing

Derived

This tool is a light-controlled CRISPR/dCas9 transactivation system for activating gene expression. It is built on the interaction of the light-responsive protein PAL with an RNA aptamer to create reversible optical control of CRISPR/dCas9-mediated transcriptional activation.

Need precise spatiotemporal control with light input

Derived

This tool is a light-controlled CRISPR/dCas9 transactivation system for activating gene expression. It is built on the interaction of the light-responsive protein PAL with an RNA aptamer to create reversible optical control of CRISPR/dCas9-mediated transcriptional activation.

Taxonomy & Function

Primary hierarchy

Mechanism Branch

Architecture: A composed arrangement of multiple parts that instantiates one or more mechanisms.

Target processes

editing

Input: Light

Implementation Constraints

cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: multi component delivery burdenimplementation constraint: spectral hardware requirementoperating role: actuatoroperating role: regulatorswitch architecture: multi component

Implementation is based on combining CRISPR/dCas9 transactivation with the light-responsive protein PAL and an RNA aptamer, indicating a multi-component construct design. The supplied evidence does not provide practical details on expression systems, cofactors, delivery method, or guide RNA/aptamer configuration.

The provided evidence does not specify the exact illumination wavelength, host organism, target genes, activation domain architecture, or quantitative fold-change values. Independent replication and validation across multiple biological contexts are not documented in the supplied material.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 2applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 3applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 4applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 5applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 6applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 7applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 8applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 9applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 10applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 11applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 12applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 13applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 14applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 15applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 16applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 17applicabilitysupports2020Source 1needs review

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.
Claim 18design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 19design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 20design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 21design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 22design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 23design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 24design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 25design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 26design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 27design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 28design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 29design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 30design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 31design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 32design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 33design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 34design advantagesupports2020Source 1needs review

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation
Claim 35performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 36performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 37performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 38performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 39performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 40performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 41performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 42performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 43performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 44performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 45performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 46performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 47performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 48performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 49performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 50performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 51performancesupports2020Source 1needs review

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark
Claim 52tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 53tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 54tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 55tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 56tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 57tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 58tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 59tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 60tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 61tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 62tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 63tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 64tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 65tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 66tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 67tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.
Claim 68tool descriptionsupports2020Source 1needs review

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.

Approval Evidence

1 source4 linked approval claimsfirst-pass slug light-controlled-crispr-dcas9-transactivation-system
we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression

Source:

applicabilitysupports

The platform is broadly applicable and adds to modular building blocks for synthetic biological circuit design.

It adds to the current set of modular building blocks for synthetic biological circuit design and is broadly applicable.

Source:

design advantagesupports

The platform significantly reduces the coding space required for genetic manipulation.

This platform significantly reduces the coding space required for genetic manipulation

Source:

performancesupports

The platform provides a strong on-switch with almost no residual activity in the dark.

provides a strong on-switch with almost no residual activity in the dark

Source:

tool descriptionsupports

The paper describes a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression built on the interaction of PAL with an RNA aptamer.

Building on the interaction of the photoreceptor PAL with an RNA aptamer, we describe a variation of the CRISPR/dCAS9 system for light-controlled activation of gene expression.

Source:

Comparisons

Source-backed strengths

Reported strengths include a strong on-switch and almost no residual activity in the dark, indicating high dynamic separation between illuminated and non-illuminated states. The source also describes the platform as broadly applicable and modular for synthetic circuit design.

Source:

provides a strong on-switch with almost no residual activity in the dark

Compared with nanoCRISPR

light-controlled CRISPR/dCAS9 transactivation system and nanoCRISPR address a similar problem space because they share editing.

Shared frame: same top-level item type; shared target processes: editing; same primary input modality: light

light-controlled CRISPR/dCAS9 transactivation system and optogenetic epigenetic editing toolbox for Ascl1 promoter targeting address a similar problem space because they share editing.

Shared frame: same top-level item type; shared target processes: editing; same primary input modality: light

Compared with RNA aptamer

light-controlled CRISPR/dCAS9 transactivation system and RNA aptamer address a similar problem space because they share editing.

Shared frame: shared target processes: editing; shared mechanisms: reversible transactivation; same primary input modality: light

Relative tradeoffs: looks easier to implement in practice.

Ranked Citations

  1. 1.
    StructuralSource 1Angewandte Chemie International Edition2020Claim 11Claim 12Claim 11

    Extracted from this source document.