Anti-Tissue Factor Antibody Conjugates for Targeted Payload Delivery

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Solution Overview

Problem

There is a need for improved methods to modulate the activity of tissue factor (TF) and its downstream signaling coagulation processes, particularly in diseases such as thrombosis, atherosclerosis, and cancer, and for therapeutics that specifically target TF-expressing cells and tissues.

Innovation Solution

Development of antibodies and antibody conjugates that selectively bind to TF, which can be linked to payload moieties for targeted delivery to TF-expressing cells, including pharmaceutical compositions for parenteral administration, and methods for using these antibodies and conjugates for therapeutic, diagnostic, or analytical purposes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional coagulation modulators are used, then coagulation processes can be influenced, but specificity to TF-expressing cells is insufficient

Engineering Contradiction:
Improvespecificity to TF-expressing cellsVSAvoidbroad coagulation modulation
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent uses antibodies as intermediary molecules that specifically bind to tissue factor on target cells. This intermediary approach allows selective targeting of TF-expressing cells while modulating coagulation processes, resolving the contradiction between specificity and broad modulation capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention employs antibodies with specific binding properties that concentrate therapeutic effect locally at TF-expressing sites. This local quality approach enables selective action on target cells while maintaining the ability to influence coagulation processes wherever TF is expressed

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If non-specific coagulation modulators are used, then broad coagulation influence is achieved, but payload delivery precision to target cells is reduced

Engineering Contradiction:
Improvepayload delivery precisionVSAvoidcoagulation process modulation efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent merges the specific targeting capability of antibodies with therapeutic or diagnostic payloads. This combination achieves both precise payload delivery to TF-expressing cells and efficient modulation of coagulation processes through the unified antibody-payload conjugate

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The antibody platform serves multiple functions: specific target cell recognition, payload delivery, and coagulation process modulation. This multi-functionality resolves the contradiction between delivery precision and overall process efficiency

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If TF activity is inhibited, then thrombosis risk is reduced, but coagulation protection capability may be compromised

Engineering Contradiction:
Improvethrombosis riskVSAvoidcoagulation protection
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent extracts and selectively inhibits the pathological aspect of TF activity (thrombosis promotion) while preserving normal coagulation function. By targeting TF specifically on abnormal or activated cells, the invention reduces thrombosis risk without compromising essential coagulation protection

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The antibodies and antibody conjugates effectively deliver payload moieties to TF-expressing cells, providing therapeutic benefits for conditions like cancer, autoimmune diseases, and infections, and enabling diagnostic and analytical methods, including tumor growth inhibition and payload delivery.

Implementation Method 1

antibodies that selectively bind tissue factor (TF)

Methodology Applied
Scientific EffectAntigen-antibody binding:

Implementation Method 2

antibody conjugates that selectively bind TF. The antibody conjugates comprise an antibody that binds TF linked to one or more payload moieties

Methodology Applied
Scientific EffectTargeted delivery:

Data Source

PatentUS12540197B2Anti-tissue factor antibodies and antibody conjugates, compositions comprising anti-tissue factor antibodies or antibody conjugates, and methods of making and using anti-tissue factor antibodies and antibody conjugates
Publication Date: 2026.02.03 SUTRO BIOPHARMA INC
  • US12540197B2 patent drawing
  • US12540197B2 patent drawing
  • US12540197B2 patent drawing

AI summary

The present disclosure relates to antibodies and antibody conjugates that selectively bind to tissue factor and its isoforms and homologs, and compositions comprising the antibodies. Also provided are methods of using the antibodies and antibody conjugates, such as therapeutic and diagnostic methods.