Source 1review2023Bioorganic & Medicinal Chemistry
Toolkit/VHL-recruiting PROTAC
VHL-recruiting PROTAC
Also known as: PROTAC, proteolysis targeting chimera
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
These heterobifunctional molecules are comprised of three units: a ligand for the protein of interest (POI), a ligand for an E3 ubiquitin ligase, and a linker that tethers the two motifs together. Von Hippel-Lindau (VHL) is one of the most widely employed E3 ligases in PROTACs development.
Usefulness & Problems
Why this is useful
A VHL-recruiting PROTAC is a heterobifunctional degrader that links a protein-of-interest ligand to a VHL E3 ligase ligand through a linker. The review frames this architecture as a core format for targeted protein degradation.; targeted protein degradation; recruiting VHL E3 ligase to a protein of interest; modular degrader design using POI ligand, VHL ligand, and linker
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A VHL-recruiting PROTAC is a heterobifunctional degrader that links a protein-of-interest ligand to a VHL E3 ligase ligand through a linker. The review frames this architecture as a core format for targeted protein degradation.
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targeted protein degradation
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recruiting VHL E3 ligase to a protein of interest
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modular degrader design using POI ligand, VHL ligand, and linker
Problem solved
It provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.; enables targeted protein degradation as a therapeutic modality; provides a modular architecture for connecting a POI ligand to a VHL-recruiting ligand
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It provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.
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enables targeted protein degradation as a therapeutic modality
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provides a modular architecture for connecting a POI ligand to a VHL-recruiting ligand
Problem links
VHL-recruiting PROTACs are an actionable drug construct pattern whose in-body behavior can be difficult to predict, so they are a plausible test class for improving mechanism and safety models. They are relevant mainly for targeted protein degradation therapeutics rather than the broader foodome or general small-molecule ADME/Tox problem.
enables targeted protein degradation as a therapeutic modality
LiteratureIt provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.
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It provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.
provides a modular architecture for connecting a POI ligand to a VHL-recruiting ligand
LiteratureIt provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.
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It provides a way to induce targeted protein degradation rather than relying only on conventional occupancy-based inhibition. The modular format also allows medicinal-chemistry tuning through linker design.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Techniques
No technique tags yet.
Target processes
degradationInput: Chemical
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: regulator
Implementation requires a ligand for the protein of interest, a VHL-binding ligand, and a linker that can be chemically installed between them. The review specifically emphasizes synthetic chemistry for tethering linkers to VHL ligands.; requires a POI ligand, a VHL ligand, and a linker; requires linker design that supports favorable physicochemical properties and ternary-complex orientation
The abstract does not support any claim that VHL-recruiting PROTACs automatically work across all targets or contexts. It explicitly notes that linker choices can strongly influence bioactivity.; bioactivity depends on linker composition and length
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
VHL is one of the most widely employed E3 ligases in PROTAC development because of prevalent expression across tissue types and well-characterized ligands.
In VHL-recruiting PROTACs, linker composition and length influence physicochemical properties and the spatial orientation of the POI-PROTAC-E3 ternary complex, thereby affecting degrader bioactivity.
Approval Evidence
1 source2 linked approval claimsfirst-pass slug vhl-recruiting-protac
These heterobifunctional molecules are comprised of three units: a ligand for the protein of interest (POI), a ligand for an E3 ubiquitin ligase, and a linker that tethers the two motifs together. Von Hippel-Lindau (VHL) is one of the most widely employed E3 ligases in PROTACs development.
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adoption contextsupports
VHL is one of the most widely employed E3 ligases in PROTAC development because of prevalent expression across tissue types and well-characterized ligands.
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design principlesupports
In VHL-recruiting PROTACs, linker composition and length influence physicochemical properties and the spatial orientation of the POI-PROTAC-E3 ternary complex, thereby affecting degrader bioactivity.
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Comparisons
Source-stated alternatives
The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
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The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
Source-backed strengths
described as an emerging therapeutic modality; modular three-part architecture supports linker engineering
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described as an emerging therapeutic modality
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modular three-part architecture supports linker engineering
Compared with PROTAC
The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
Shared frame: source-stated alternative in extracted literature
Strengths here: described as an emerging therapeutic modality; modular three-part architecture supports linker engineering.
Relative tradeoffs: bioactivity depends on linker composition and length.
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The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
Compared with proteolysis targeting chimera
The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
Shared frame: source-stated alternative in extracted literature
Strengths here: described as an emerging therapeutic modality; modular three-part architecture supports linker engineering.
Relative tradeoffs: bioactivity depends on linker composition and length.
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The abstract situates VHL as one of the most widely employed E3 ligases, implying that other E3-ligase-recruiting PROTAC formats exist. Specific alternative ligases are not named in the provided source text.
Ranked Citations
- 1.