Toolkit/AAV-PA-Cre 3.0

AAV-PA-Cre 3.0

Delivery Strategy·Research·Since 2020

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

Summary

AAV-PA-Cre 3.0 is an adeno-associated viral delivery resource for the photoactivatable Cre recombinase 3.0 system, generated and validated for in vivo mouse applications. It delivers a blue-light-gated Cre/lox recombination system engineered for mammalian expression with reduced background recombination.

Usefulness & Problems

Why this is useful

This resource enables viral delivery of a light-controlled Cre/lox recombination system for mouse experiments, supporting spatiotemporal control of recombination in vivo. The reported PA-Cre 3.0 modifications reduce dark leak activity while improving blue-light induction, which is useful when basal recombination must be minimized.

Problem solved

It addresses the problem of background recombination in photoactivatable Cre systems, which was linked to high sequence similarity in the dimerization domains. It also addresses the need for a mammalian-expression-optimized, AAV-deliverable PA-Cre configuration for in vivo mouse use.

Taxonomy & Function

Primary hierarchy

Mechanism Branch

Architecture: A delivery strategy grouped with the mechanism branch because it determines how a system is instantiated and deployed in context.

Techniques

No technique tags yet.

Target processes

recombination

Implementation Constraints

PA-Cre 3.0 was optimized for mammalian expression using a CAG promoter, Magnets, and a 2A self-cleaving peptide. Codon modifications were introduced for mouse gene targeting and viral production to reduce background recombination associated with sequence similarity in the dimerization domains; the evidence only states that an AAV resource was generated and validated, without further delivery details.

The supplied evidence does not specify AAV serotype, packaging configuration, illumination parameters, target tissues, or quantitative recombination performance. Independent replication is not provided in the supplied evidence, and validation details beyond the statement that the resource was generated and validated are not described.

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 source1 linked approval claimfirst-pass slug aav-pa-cre-3-0
As a resource, we have generated and validated AAV-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:

Comparisons

Source-backed strengths

The source states that AAV-PA-Cre 3.0 was generated and validated as a resource for in vivo mouse applications. Reported engineering changes, including codon modifications and an optimized mammalian expression design, significantly reduced dark leak activity and improved blue-light induction in PA-Cre 3.0.

Ranked Citations

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

    Extracted from this source document.