Source 1primary paper2018ACS Applied Materials & Interfaces
Toolkit/TKPEI-Ce6
TKPEI-Ce6
Also known as: TKPEI-Ce6, TKPEI-Ce6/siRNA
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
TKPEI-Ce6 is a red-light-activated siRNA delivery harness built from chlorin e6-conjugated, thioketal-cross-linked polyethylenimine that condenses siRNA into nanoscale complexes. Upon 660 nm irradiation, it generates reactive oxygen species and undergoes thioketal-linked nanostructure disruption, promoting endosomal escape and cytosolic siRNA release for gene silencing.
Usefulness & Problems
Why this is useful
This system is useful as a light-gated siRNA carrier that couples delivery with externally controlled intracellular release. The reported concept is intended to enable site-specific downregulation of targeted gene expression in vivo and showed superior siRNA silencing efficiency in an anticancer therapy context.
Problem solved
TKPEI-Ce6 addresses the problem of achieving controlled intracellular siRNA release after nanocomplex formation. Specifically, it is designed to overcome limited endosomal escape and insufficient cytosolic siRNA availability by using 660 nm light to trigger reactive oxygen species generation, thioketal linker cleavage, and nanostructure disruption.
Published Workflows
Objective: Engineer a red-light-activated siRNA delivery system that overcomes poor endosomal escape and intracellular release in nanocarrier-mediated RNAi therapeutics.
Why it works: The abstract states that red-light irradiation causes Ce6 to generate ROS, which both destroys endosomal membranes to accelerate escape and cleaves the thioketal linker to disrupt the carrier and release siRNA in the cytosol.
ROS generation under red-light irradiationendosomal membrane destructionthioketal linker cleavagenanostructure disruption for cytosolic siRNA releasechemical carrier designlight-triggered activationsiRNA nanocomplex formation
Stages
- 1.Carrier design and preparation(library_build)
This stage creates the engineered carrier needed to test whether ROS-sensitive chemistry and Ce6 photosensitization can jointly improve siRNA delivery.
Selection: Construction of a ROS-sensitive siRNA delivery system from branched polyethylenimine, a ROS-labile crosslinker, poly(ethylene glycol), and chlorin e6.
- 2.siRNA complex formation(functional_characterization)
The carrier must first form a nanoscale siRNA complex before light-triggered intracellular activation can be evaluated.
Selection: Ability of TKPEI-Ce6 to condense siRNA into a nanoscale complex.
- 3.Red-light activation and mechanistic release(confirmatory_validation)
This stage tests the central mechanistic hypothesis that light-generated ROS can both disrupt endosomes and cleave the ROS-labile linker to release siRNA.
Selection: Response of the TKPEI-Ce6/siRNA complex to 660 nm red-light irradiation through ROS generation, endosomal escape, and cytosolic siRNA release.
Steps
- 1.Synthesize TKPEI-Ce6 by linking PEI, ROS-labile crosslinker, PEG, and Ce6engineered siRNA delivery system
Create a ROS-sensitive, photosensitized carrier for siRNA delivery.
The carrier must be chemically assembled before it can be loaded with siRNA and tested for light-triggered function.
- 2.Condense siRNA into a nanoscale TKPEI-Ce6/siRNA complexsiRNA carrier
Generate the nanoscale delivery complex used for downstream light-triggered release.
siRNA must be packaged into the carrier before irradiation-dependent endosomal escape and release can occur.
- 3.Irradiate the TKPEI-Ce6/siRNA complex with 660 nm red light to trigger ROS-mediated endosomal escape and siRNA releaselight-activated siRNA delivery complex
Activate the carrier so that ROS generation promotes endosomal escape and cytosolic siRNA release.
Light activation is performed after complex formation because the ROS-triggered mechanism acts on the assembled siRNA-loaded nanostructure.
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.
Mechanisms
endosomal escapelight-triggered nanostructure disruptionPhotocleavagereactive oxygen species generationsirna condensationTechniques
No technique tags yet.
Target processes
No target processes tagged yet.
Input: Light
Implementation Constraints
The construct is based on polyethylenimine cross-linked through thioketal linkers and conjugated to chlorin e6, then formulated with siRNA as nanoscale complexes. Activation requires 660 nm red-light irradiation, and the light response depends on Ce6-mediated reactive oxygen species generation and thioketal cleavage.
The available evidence comes from a single 2018 source and provides limited quantitative detail in the supplied record. Independent replication, comparative benchmarking against other siRNA carriers, and broader validation across targets, models, or delivery settings are not documented here.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
irradiation wavelength 660 nm
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
irradiation wavelength 660 nm
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
irradiation wavelength 660 nm
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
irradiation wavelength 660 nm
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
irradiation wavelength 660 nm
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
Approval Evidence
1 source4 linked approval claimsfirst-pass slug tkpei-ce6
As a proof-of-concept, we explored an innovative siRNA delivery system, TKPEI-Ce6... TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
Source:
application scopesupports
The TKPEI-Ce6 concept may enable light-controlled site-specific downregulation of targeted gene expression in vivo.
This concept also provides new avenues for light-controlled site-specific downregulation of targeted gene expression in vivo, facilitating precise treatment of numerous diseases.
Source:
mechanismsupports
TKPEI-Ce6 condenses siRNA into a nanoscale complex.
TKPEI-Ce6 efficiently condensed siRNA to form the nanoscale complex TKPEI-Ce6/siRNA.
Source:
mechanismsupports
Under 660 nm red-light irradiation, TKPEI-Ce6 generates ROS via conjugated Ce6, accelerates endosomal escape, and triggers cytosolic siRNA release by thioketal linker cleavage and nanostructure disruption.
Under red-light irradiation (660 nm), the conjugated Ce6 produced ROS, which could accelerate endosomal escape by the destruction of the endosomal membranes and then trigger the cytosolic release of siRNA by cleaving the thioketal linker and further disrupting the nanostructure of the TKPEI-Ce6/siRNA.
Source:
performancesupports
TKPEI-Ce6 enables superior siRNA silencing efficiency toward anticancer therapy.
Therefore, the superior silencing efficiency of siRNA was collectively realized toward an anticancer therapy.
Source:
Comparisons
Source-backed strengths
The tool combines siRNA condensation with red-light-triggered release in a single polymeric nanocomplex. Reported strengths include accelerated endosomal escape, cytosolic siRNA release under 660 nm irradiation, and superior siRNA silencing efficiency toward anticancer therapy.
Ranked Citations
- 1.