Targeted Bio-Orthogonal Prodrug Activation

Publication ID: 24-11857636_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Targeted Bio-Orthogonal Prodrug Activation,” Published Technical Disclosure No. 24-11857636_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857636_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,636.

Summary of the Inventive Concept

The invention relates to an improved method for targeted activation of prodrugs using bio-orthogonal chemical reactions, enhancing specificity, safety, and efficacy.

Background and Problem Solved

The original patent disclosed bio-orthogonal drug activation methods, but limitations included lack of targeting specificity, potential off-target effects, and inefficient activation. The new inventive concept addresses these limitations by introducing targeted delivery and activation mechanisms.

Detailed Description of the Inventive Concept

The new concept comprises a trans-cyclooctene derivative and a compatible diene, wherein the diene is conjugated to a targeting moiety or encapsulated in a nanoparticle, ensuring specific site activation. The bio-orthogonal chemical reaction is triggered by enzymatic activity or targeted delivery, enhancing efficiency and reducing off-target effects.

Novelty and Inventive Step

The new claims introduce the concept of targeted delivery and activation of prodrugs using bio-orthogonal chemical reactions, which is not obvious from the original patent. The use of trans-cyclooctene derivatives, compatible dienes, and targeting moieties or nanoparticles provides a novel and non-obvious solution to the limitations of the original patent.

Alternative Embodiments and Variations

Alternative embodiments include using different targeting moieties or nanoparticles, varying the structure of the trans-cyclooctene derivative and compatible diene, and exploring different enzymatic triggers for the bio-orthogonal reaction.

Potential Commercial Applications and Market

The targeted bio-orthogonal prodrug activation concept has potential applications in cancer therapy, autoimmune disease treatment, and other areas where targeted drug delivery is crucial. The market for targeted therapies is growing, and this invention offers a competitive advantage in terms of specificity, safety, and efficacy.

CPC Classifications

SectionClassGroup
A A61 A61K47/6803
A A61 A61K31/435
A A61 A61K31/444
A A61 A61K31/704
A A61 A61K38/05
A A61 A61K39/3955
A A61 A61K39/39558
A A61 A61K47/22
A A61 A61K47/545
A A61 A61K47/555
A A61 A61K47/558
A A61 A61K47/6897
B B82 B82Y5/00
C C07 C07C33/16
C C07 C07D237/26
C C07 C07D257/08
Y Y02 Y02A50/30

Original Patent Information

Patent NumberUS 11,857,636
TitleBio-orthogonal drug activation
Assignee(s)Tagworks Pharmaceuticals B.V.