Toolkit/single-component optogenetic tools for inducible RhoA GTPase signaling

single-component optogenetic tools for inducible RhoA GTPase signaling

Multi-Component Switch·Research·Since 2021

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

Summary

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The reported system does not require protein binding partners and enables inducible RhoA-mediated cytoskeletal activation with downstream YAP nuclear localization and YAP-TEAD mechanotranscription.

Usefulness & Problems

Why this is useful

These tools are useful for perturbing RhoA signaling with light while avoiding the need for separate binding-partner components. The reported outputs include cytoskeletal remodeling and rapid YAP-dependent mechanotransduction, making the system relevant for studying contractility-linked signaling.

Source:

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.

Source:

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.

Problem solved

The tool addresses the problem of optically inducing RhoA GTPase signaling in a single-component format rather than through multi-protein partner systems. It also provides a way to connect acute RhoA activation to downstream mechanotransduction readouts such as YAP nuclear localization and YAP-TEAD transcriptional activity.

Problem links

Need conditional control of signaling activity

Derived

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The tools directly recruit fused effectors to the membrane without requiring protein binding partners, enabling inducible contractile signaling, cytoskeletal remodeling, and downstream YAP-dependent mechanotransduction.

Need conditional recombination or state switching

Derived

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The tools directly recruit fused effectors to the membrane without requiring protein binding partners, enabling inducible contractile signaling, cytoskeletal remodeling, and downstream YAP-dependent mechanotransduction.

Need inducible protein relocalization or recruitment

Derived

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The tools directly recruit fused effectors to the membrane without requiring protein binding partners, enabling inducible contractile signaling, cytoskeletal remodeling, and downstream YAP-dependent mechanotransduction.

Need precise spatiotemporal control with light input

Derived

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The tools directly recruit fused effectors to the membrane without requiring protein binding partners, enabling inducible contractile signaling, cytoskeletal remodeling, and downstream YAP-dependent mechanotransduction.

Need tighter control over gene expression timing or amplitude

Derived

Single-component optogenetic tools were created to control RhoA GTPase signaling with light. The tools directly recruit fused effectors to the membrane without requiring protein binding partners, enabling inducible contractile signaling, cytoskeletal remodeling, and downstream YAP-dependent mechanotransduction.

Taxonomy & Function

Primary hierarchy

Mechanism Branch

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

Techniques

No technique tags yet.

Target processes

localizationrecombinationsignalingtranscription

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: regulatorswitch architecture: multi componentswitch architecture: recruitment

The source supports that the system is a single-component optogenetic design for light control of RhoA GTPase signaling and that it does not require protein binding partners. However, the provided evidence does not describe cofactors, expression system, delivery method, membrane-targeting sequence, or exact fusion design.

The available evidence here is sparse and does not specify the photoreceptor module, wavelengths, construct architecture, or quantitative performance metrics. Reported cytoskeletal morphology changes were context dependent, because their outcome depended on alignment between spatially patterned stimulation and the underlying cell polarization.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 2context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 3context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 4context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 5context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 6context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 7context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 8context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 9context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 10context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 11context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 12context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 13context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 14context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 15context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 16context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 17context dependencesupports2021Source 1needs review

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.
Claim 18design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 19design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 20design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 21design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 22design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 23design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 24design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 25design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 26design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 27design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 28design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 29design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 30design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 31design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 32design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 33design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 34design propertysupports2021Source 1needs review

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling
Claim 35downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 36downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 37downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 38downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 39downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 40downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 41downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 42downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 43downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 44downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 45downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 46downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 47downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 48downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 49downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 50downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 51downstream signalingsupports2021Source 1needs review

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.
time to YAP nuclear localization within minutes
Claim 52functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 53functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 54functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 55functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 56functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 57functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 58functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 59functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 60functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 61functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 62functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 63functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 64functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 65functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 66functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 67functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 68functional effectsupports2021Source 1needs review

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.
light pulse requirement as little as one pulse
Claim 69tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 70tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 71tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 72tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 73tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 74tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 75tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 76tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 77tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 78tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 79tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 80tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 81tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 82tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 83tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 84tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.
Claim 85tool mechanismsupports2021Source 1needs review

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.

Approval Evidence

1 source5 linked approval claimsfirst-pass slug single-component-optogenetic-tools-for-inducible-rhoa-gtpase-signaling
We created optogenetic tools to control RhoA GTPase

Source:

context dependencesupports

Cytoskeletal morphology changes depended on the alignment of spatially patterned stimulation with the underlying cell polarization.

Cytoskeletal morphology changes were dependent on the alignment of the spatially patterned stimulation with the underlying cell polarization.

Source:

design propertysupports

These optogenetic tools are single-component and do not require protein binding partners.

These single-component tools, which do not require protein binding partners, offer spatiotemporally precise control over RhoA signaling

Source:

downstream signalingsupports

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction verified by YAP-TEAD transcriptional activity.

RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and subsequent mechanotransduction, verified by YAP- TEAD transcriptional activity.

Source:

functional effectsupports

Direct membrane recruitment of the fused effectors induced potent contractile signaling sufficient to separate adherens junctions after as little as one pulse of blue light.

Direct membrane recruitment of these effectors induced potent contractile signaling sufficient to separate adherens junctions in response to as little as one pulse of blue light.

Source:

tool mechanismsupports

RhoA GTPase or its upstream activating GEF effectors can be fused to BcLOV4 for light-regulated plasma membrane recruitment.

RhoA GTPase, or its upstream activating GEF effectors, were fused to BcLOV4, a photoreceptor that can be dynamically recruited to the plasma membrane by a light-regulated protein-lipid electrostatic interaction with the inner leaflet.

Source:

Comparisons

Source-backed strengths

A key strength is the single-component design, which the source states does not require protein binding partners. The literature also reports that RhoA-mediated cytoskeletal activation induced YAP nuclear localization within minutes and produced downstream YAP-TEAD transcriptional activity, supporting functional coupling from light input to mechanotransduction.

Compared with CRY2/CIB1

single-component optogenetic tools for inducible RhoA GTPase signaling and CRY2/CIB1 address a similar problem space because they share localization, recombination, signaling, transcription.

Shared frame: same top-level item type; shared target processes: localization, recombination, signaling, transcription; shared mechanisms: heterodimerization; same primary input modality: light

Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.

Compared with iLID/SspB

single-component optogenetic tools for inducible RhoA GTPase signaling and iLID/SspB address a similar problem space because they share localization, recombination, signaling, transcription.

Shared frame: same top-level item type; shared target processes: localization, recombination, signaling, transcription; shared mechanisms: heterodimerization, membrane recruitment, membrane_recruitment; same primary input modality: light

Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.

Compared with LOVpep/ePDZb

single-component optogenetic tools for inducible RhoA GTPase signaling and LOVpep/ePDZb address a similar problem space because they share localization, signaling, transcription.

Shared frame: same top-level item type; shared target processes: localization, signaling, transcription; shared mechanisms: heterodimerization; same primary input modality: light

Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.

Ranked Citations

  1. 1.

    Extracted from this source document.