Source 1primary paper2017Journal of Controlled Release
Toolkit/azobenzene-cyclodextrin host-guest siRNA release module
azobenzene-cyclodextrin host-guest siRNA release module
Also known as: azobenzene–cyclodextrin host–guest pair
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
The azobenzene-cyclodextrin host-guest siRNA release module is a light-responsive siRNA carrier motif built on azobenzene–cyclodextrin host-guest association. In the reported system, near-infrared irradiation is converted by upconversion nanoparticles into UV emission that induces azobenzene photoisomerization and controlled siRNA release.
Usefulness & Problems
Why this is useful
This module is useful for externally triggered, spatiotemporally controlled siRNA delivery using light as the input modality. The cited evidence specifically supports NIR-triggered release through an upconversion nanoparticle-based nanocarrier architecture.
Problem solved
It addresses the problem of achieving controlled siRNA release from a carrier in response to a noninvasive optical trigger. The reported design links NIR irradiation to cargo release through UCNP-mediated UV generation and azobenzene switching.
Problem links
couples optical stimulation to reversible siRNA association and release
LiteratureIt provides a mechanistic route for controlled siRNA release after optical stimulation.
Source:
It provides a mechanistic route for controlled siRNA release after optical stimulation.
Published Workflows
Objective: Engineer and evaluate a NIR-responsive siRNA nanocarrier for spatiotemporally controlled gene silencing.
Why it works: The reported design couples NIR irradiation to UCNP emission and azobenzene photoisomerization so that optical input can trigger controlled siRNA release and thereby localize gene silencing.
UCNP-mediated NIR-to-UV transductionazobenzene photoisomerizationhost-guest-mediated siRNA releasenanocarrier functionalizationlight-triggered release testing2D cell validation3D spheroid validation
Stages
- 1.nanocarrier design and functionalization(library_design)
This stage creates the multifunctional carrier architecture needed for NIR-triggered and spatially controlled siRNA delivery.
Selection: Assemble a UCNP siRNA carrier with release, targeting, penetration, and imaging components.
- 2.mechanism-linked light-triggered release evaluation(functional_characterization)
This stage tests whether the intended photochemical release mechanism functions before downstream biological validation.
Selection: Evaluate whether NIR irradiation can drive UCNP emission, azobenzene photoisomerization, and controlled siRNA release.
- 3.2D cell validation(confirmatory_validation)
This stage confirms that the light-triggered carrier produces the intended gene-silencing effect in cells.
Selection: Test whether the nanocarrier can produce spatially restricted GFP knockdown in 2D cells.
- 4.3D spheroid validation(confirmatory_validation)
This stage extends validation from 2D cells to a more complex 3D tumor spheroid context.
Selection: Test whether the nanocarrier can produce spatially restricted GFP knockdown in 3D multicellular tumor spheroids.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Mechanisms
host-guest associationlight-triggered cargo releasephotoisomerizationupconversion-mediated phototriggeringTechniques
No technique tags yet.
Target processes
No target processes tagged yet.
Input: Light
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: spectral hardware requirementoperating role: actuator
Implementation in the cited system requires integration with upconversion nanoparticles so that NIR irradiation can generate local UV emission. The module depends on azobenzene–cyclodextrin host-guest assembly and a construct design that couples azobenzene photoisomerization to siRNA release.
The available evidence is limited to a single cited report and does not establish generality across carrier formats, cell types, or in vivo settings beyond that study. Quantitative performance metrics, release kinetics, and comparative benchmarking are not provided in the supplied evidence.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
The reported system demonstrates spatially restricted GFP knockdown in 2D cells and 3D multicellular tumor spheroids.
The reported system demonstrates spatially restricted GFP knockdown in 2D cells and 3D multicellular tumor spheroids.
The reported system demonstrates spatially restricted GFP knockdown in 2D cells and 3D multicellular tumor spheroids.
The reported system demonstrates spatially restricted GFP knockdown in 2D cells and 3D multicellular tumor spheroids.
The reported system demonstrates spatially restricted GFP knockdown in 2D cells and 3D multicellular tumor spheroids.
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
An upconversion nanoparticle-based siRNA nanocarrier enables NIR-induced spatiotemporally controlled gene silencing.
An upconversion nanoparticle-based siRNA nanocarrier enables NIR-induced spatiotemporally controlled gene silencing.
An upconversion nanoparticle-based siRNA nanocarrier enables NIR-induced spatiotemporally controlled gene silencing.
An upconversion nanoparticle-based siRNA nanocarrier enables NIR-induced spatiotemporally controlled gene silencing.
An upconversion nanoparticle-based siRNA nanocarrier enables NIR-induced spatiotemporally controlled gene silencing.
Approval Evidence
1 source1 linked approval claimfirst-pass slug azobenzene-cyclodextrin-host-guest-sirna-release-module
siRNA is associated through azobenzene–cyclodextrin host–guest chemistry; NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
Source:
mechanismsupports
In the reported siRNA carrier, NIR irradiation drives UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release.
Source:
Comparisons
Source-stated alternatives
The web summary cites an antecedent UCNP siRNA system that used photocaged linkers rather than azobenzene–cyclodextrin host–guest chemistry.
Source:
The web summary cites an antecedent UCNP siRNA system that used photocaged linkers rather than azobenzene–cyclodextrin host–guest chemistry.
Source-backed strengths
The reported system provides a mechanistically linked sequence of NIR irradiation, UCNP UV emission, azobenzene photoisomerization, and controlled siRNA release. The use of NIR as the external trigger supports spatiotemporal control in the cited nanocarrier context.
Compared with small interfering RNA
The web summary cites an antecedent UCNP siRNA system that used photocaged linkers rather than azobenzene–cyclodextrin host–guest chemistry.
Shared frame: source-stated alternative in extracted literature
Strengths here: provides a defined photochemical release mechanism.
Source:
The web summary cites an antecedent UCNP siRNA system that used photocaged linkers rather than azobenzene–cyclodextrin host–guest chemistry.
Ranked Citations
- 1.