Toolkit/PA-Cre 3.0

PA-Cre 3.0

Multi-Component Switch·Research·Since 2020

Also known as: PA Cre 3.0, photoactivatable Cre recombinase 3.0, photoactivatable (PA) Cre recombinase

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

Summary

PA-Cre 3.0 is a genetically encoded photoactivatable Cre recombinase system for light-controlled recombination in mammalian cells and in vivo mouse applications. It is an updated multi-component switch engineered to reduce background recombination and improve blue-light-induced Cre activity.

Usefulness & Problems

Why this is useful

PA-Cre 3.0 is useful for temporally controlling Cre-lox recombination with light while reducing unwanted recombination in the dark. The reported optimization for mammalian expression and in vivo mouse applications supports its use where low basal activity and inducible blue-light activation are important.

Source:

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.

Source:

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.

Problem solved

This tool addresses background recombination in earlier photoactivatable Cre designs, which was attributed to high sequence similarity in the dimerization domains. It also addresses the need for improved blue-light-induced recombination performance in mammalian and mouse contexts.

Source:

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.

Source:

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.

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

recombination

Input: Light

Implementation Constraints

The reported construct design includes mammalian expression optimization with a CAG promoter, Magnets, and a 2A self-cleaving peptide. Codon modifications were introduced for mouse gene targeting and viral production, indicating attention to sequence design for in vivo and vector-based implementation.

The supplied evidence does not provide quantitative performance metrics, wavelength details beyond blue light, or direct comparisons across multiple cell types or tissues. Independent replication is not documented in the provided evidence.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 2background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 3background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 4background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 5background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 6background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 7background reductionsupports2020Source 1needs review

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.
Claim 8engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 9engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 10engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 11engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 12engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 13engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 14engineering optimizationsupports2020Source 1needs review

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.
Claim 15performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 16performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 17performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 18performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 19performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 20performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 21performance improvementsupports2020Source 1needs review

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.
Claim 22resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 23resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 24resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 25resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 26resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 27resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 28resource generationsupports2020Source 1needs review

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.
Claim 29tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 30tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 31tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 32tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 33tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 34tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.
Claim 35tool developmentsupports2020Source 1needs review

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.

Approval Evidence

1 source5 linked approval claimsfirst-pass slug pa-cre-3-0
Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.

Source:

background reductionsupports

Codon modifications for mouse gene targeting and viral production were introduced to prevent background recombination caused by high sequence similarity in the dimerization domains.

To prevent background recombination caused by the high sequence similarity in the dimerization domains, we modify the codons for mouse gene targeting and viral production.

Source:

engineering optimizationsupports

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide.

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.

Source:

performance improvementsupports

The reported modifications significantly reduce dark leak activity and improve blue-light induction in PA-Cre 3.0.

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.

Source:

resource generationsupports

The authors generated and validated AAV-PA-Cre 3.0 and two mouse lines that can conditionally express PA-Cre 3.0.

As a resource, we have generated and validated AAV-PA-Cre 3.0 as well as two mouse lines that can conditionally express PA-Cre 3.0.

Source:

tool developmentsupports

This paper reports a new version of photoactivatable Cre recombinase called PA-Cre 3.0.

Here, we report the new version of genetically encoded photoactivatable (PA) Cre recombinase, PA-Cre 3.0.

Source:

Comparisons

Source-backed strengths

The reported modifications significantly reduce dark leak activity and improve blue-light induction relative to prior versions. The system was specifically optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide, and codon modifications were introduced for mouse gene targeting and viral production.

Source:

To improve PA-Cre technology, we compare light-dimerization tools and optimize for mammalian expression using a CAG promoter, Magnets, and 2A self-cleaving peptide.

Source:

Overall, these modifications significantly reduce dark leak activity and improve blue-light induction developing our new version, PA-Cre 3.0.

Ranked Citations

  1. 1.
    StructuralSource 1Nature Communications2020Claim 1Claim 2Claim 3

    Extracted from this source document.