Source 1review2026MED
Toolkit/ribonuclease-targeting chimeras
ribonuclease-targeting chimeras
Also known as: RIBOTACs
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Between 2020 and 2025, major progress has been achieved across five modalities: ... and ribonuclease-targeting chimeras (RIBOTACs). Each exploits endogenous degradation or regulatory pathways using chemically engineered bifunctional or monofunctional small molecules, thereby expanding the druggable proteome and transcriptome.
Usefulness & Problems
Why this is useful
RIBOTACs are induced-proximity chimeras aimed at targeted RNA degradation through endogenous pathways. The abstract explicitly links them to expansion of the druggable transcriptome.; targeted RNA degradation; expanding the druggable transcriptome; induced-proximity therapeutic design
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RIBOTACs are induced-proximity chimeras aimed at targeted RNA degradation through endogenous pathways. The abstract explicitly links them to expansion of the druggable transcriptome.
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targeted RNA degradation
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expanding the druggable transcriptome
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induced-proximity therapeutic design
Problem solved
They address transcriptome targets that are not handled by conventional protein-focused inhibition strategies.; extends induced-proximity control to RNA targets and the transcriptome
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They address transcriptome targets that are not handled by conventional protein-focused inhibition strategies.
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extends induced-proximity control to RNA targets and the transcriptome
Problem links
extends induced-proximity control to RNA targets and the transcriptome
LiteratureThey address transcriptome targets that are not handled by conventional protein-focused inhibition strategies.
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They address transcriptome targets that are not handled by conventional protein-focused inhibition strategies.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Mechanisms
Degradationexploitation of endogenous degradation or regulatory pathwaysinduced proximitytargeted rna degradationTechniques
No technique tags yet.
Target processes
degradationInput: Chemical
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: regulator
Their implementation depends on small-molecule design, ligand optimization, and chemistry that supports degradation efficiency.; requires chemically engineered small molecules; requires ligand discovery and optimization
subject to chemistry, SAR, and optimization challenges shared across modalities
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Induced-proximity degrader modalities expand the druggable proteome and transcriptome.
These induced-proximity modalities exploit endogenous degradation or regulatory pathways using chemically engineered bifunctional or monofunctional small molecules.
The review identifies five major induced-proximity modalities: PROTACs, molecular glues, LYTACs, AUTACs and related tethering strategies, and RIBOTACs.
Approval Evidence
1 source3 linked approval claimsfirst-pass slug ribonuclease-targeting-chimeras
Between 2020 and 2025, major progress has been achieved across five modalities: ... and ribonuclease-targeting chimeras (RIBOTACs). Each exploits endogenous degradation or regulatory pathways using chemically engineered bifunctional or monofunctional small molecules, thereby expanding the druggable proteome and transcriptome.
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capability summarysupports
Induced-proximity degrader modalities expand the druggable proteome and transcriptome.
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mechanism summarysupports
These induced-proximity modalities exploit endogenous degradation or regulatory pathways using chemically engineered bifunctional or monofunctional small molecules.
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modality scopesupports
The review identifies five major induced-proximity modalities: PROTACs, molecular glues, LYTACs, AUTACs and related tethering strategies, and RIBOTACs.
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Comparisons
Source-stated alternatives
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
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The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Source-backed strengths
explicitly linked to expansion of the druggable transcriptome; included in the review's comparative chemistry framework
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explicitly linked to expansion of the druggable transcriptome
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included in the review's comparative chemistry framework
Compared with autophagy-targeting chimeras
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Shared frame: source-stated alternative in extracted literature
Strengths here: explicitly linked to expansion of the druggable transcriptome; included in the review's comparative chemistry framework.
Relative tradeoffs: subject to chemistry, SAR, and optimization challenges shared across modalities.
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The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Compared with lysosome-targeting chimeras
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Shared frame: source-stated alternative in extracted literature
Strengths here: explicitly linked to expansion of the druggable transcriptome; included in the review's comparative chemistry framework.
Relative tradeoffs: subject to chemistry, SAR, and optimization challenges shared across modalities.
Source:
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Compared with molecular glues
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Shared frame: source-stated alternative in extracted literature
Strengths here: explicitly linked to expansion of the druggable transcriptome; included in the review's comparative chemistry framework.
Relative tradeoffs: subject to chemistry, SAR, and optimization challenges shared across modalities.
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The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Compared with proteolysis targeting chimera
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Shared frame: source-stated alternative in extracted literature
Strengths here: explicitly linked to expansion of the druggable transcriptome; included in the review's comparative chemistry framework.
Relative tradeoffs: subject to chemistry, SAR, and optimization challenges shared across modalities.
Source:
The review compares RIBOTACs with protein-focused induced-proximity modalities such as PROTACs, molecular glues, LYTACs, and AUTACs.
Ranked Citations
- 1.