Hydrophobic Auristatin F Compounds for New Therapeutic Applications

Publication ID: 24-11857565_0007_PTD
Published: October 28, 2025
Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Hydrophobic Auristatin F Compounds for New Therapeutic Applications,” Published Technical Disclosure No. 24-11857565_0007_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857565_0007_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. 11,857,565.

Summary of the Inventive Concept

The inventive concept expands the application of hydrophobic Auristatin F compounds to new therapeutic areas, including neurodegenerative diseases, inflammation, respiratory diseases, cancer biomarker detection, and cardiovascular diseases, by conjugating them to targeting moieties that specifically bind to disease-associated proteins or markers.

Background and Problem Solved

The original patent disclosed hydrophobic Auristatin F compounds and conjugates for treating cancer cells. However, the patent's scope was limited to oncology. The inventive concept addresses this limitation by exploring new therapeutic applications for these compounds, leveraging their unique properties to tackle complex diseases in diverse fields.

Detailed Description of the Inventive Concept

The inventive concept involves conjugating hydrophobic Auristatin F compounds to targeting moieties that specifically bind to disease-associated proteins or markers in various therapeutic areas. For instance, in neurodegenerative diseases, the conjugate can reduce protein aggregation and promote neuronal survival. In inflammation, the conjugate can target inflammatory markers, reducing inflammation and promoting tissue repair. Similarly, in respiratory diseases, the conjugate can target respiratory epithelial cell surface receptors, reducing inflammation and promoting lung function. In cancer biomarker detection, the conjugate can enable early detection and diagnosis. Finally, in cardiovascular diseases, the conjugate can target cardiovascular disease-associated proteins, reducing cardiovascular risk and promoting cardiovascular health.

Novelty and Inventive Step

The inventive concept's novelty lies in the unexpected application of hydrophobic Auristatin F compounds to new therapeutic areas, exploiting their unique properties to address complex diseases. The inventive step resides in the specific design of the conjugates, which enables the compounds to target disease-associated proteins or markers, thereby achieving therapeutic efficacy in these new areas.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could involve varying the targeting moieties, the linker chemistry, or the Auristatin F compound itself to optimize performance in different therapeutic areas. Additionally, the conjugates could be formulated for different routes of administration, such as oral, injectable, or topical, to enhance patient compliance and convenience.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in various therapeutic areas, including neurodegenerative diseases, inflammation, respiratory diseases, cancer biomarker detection, and cardiovascular diseases. The market for these applications is substantial, with growing demand for innovative treatments that can address complex diseases. The inventive concept's ability to provide targeted therapies with improved efficacy and safety profiles positions it for significant market share and revenue growth.

Field of Art

Pharmaceutical chemistry, specifically drug conjugate design for targeted therapeutic interventions, with expertise in antibody-drug conjugates, linker chemistry, and molecular targeting strategies

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with advanced degrees in chemistry or pharmaceutical sciences, experienced in designing drug conjugates, understanding molecular targeting, and applying structure-activity relationship principles across therapeutic domains

Obviousness Rationale

A PHOSITA would recognize that the source patent's hydrophobic Auristatin F compounds provide a foundational platform for exploring diverse therapeutic applications by systematically varying the targeting moiety. The disclosed variations represent predictable extensions of the original conjugate design principles, leveraging known molecular targeting strategies to expand the compound's utility across different disease contexts.

Obvious Combinations & Variations

Source Patent Element
Ligand Drug Conjugate with specific drug-linker moiety targeting cancer cells
PTD Variation
Extending conjugate design to neurodegenerative disease protein targets
Obviousness Reasoning
Predictable modification of targeting moiety while maintaining core drug conjugate structure, representing a routine optimization strategy in drug design
Source Patent Element
Hydrophobic Auristatin F compounds with MDR+ cancer cell targeting
PTD Variation
Adapting conjugate for inflammatory marker targeting
Obviousness Reasoning
Known technique of repurposing drug conjugates by modifying targeting specificity, utilizing established linker and conjugation chemistry
Source Patent Element
Antibody-drug conjugate with specific structural configurations
PTD Variation
Developing conjugates for respiratory and cardiovascular disease applications
Obviousness Reasoning
Finite set of identifiable disease-specific protein targets suggests obvious extension of existing conjugate design principles
Source Patent Element
Complex drug-linker moiety with variable attachment configurations
PTD Variation
Alternative embodiments with modified linker chemistry and administration routes
Obviousness Reasoning
Routine optimization of drug delivery strategies using known pharmaceutical engineering techniques
Source Patent Element
Ligand-drug conjugate with specific structural subunits
PTD Variation
Cancer biomarker detection application using conjugate technology
Obviousness Reasoning
Predictable application of existing molecular targeting approach to diagnostic rather than therapeutic context
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857565, a person of ordinary skill in the art would find the variations disclosed in the Published Technical Disclosure to represent obvious extensions of the foundational drug conjugate design. The systematic exploration of alternative therapeutic applications by modifying targeting moieties while maintaining the core hydrophobic Auristatin F compound structure constitutes prima facie obviousness under 35 U.S.C. ยง 103, rendering subsequent claims covering similar variations unpatentable.

Original Patent Information

Patent NumberUS 11,857,565
TitleHydrophobic Auristatin F compounds and conjugates thereof
Assignee(s)Seagen Inc.