Partially Ordered Polypeptide Networks for Tunable Phase Transition Scaffolds

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Solution Overview

Problem

Existing materials lack the ability to be rationally designed and precisely tuned to harness the interplay between ordered and disordered domains for advanced properties, limiting their application in cellular scaffolds and drug delivery.

Innovation Solution

Development of partially ordered polypeptides (POPs) with structured and disordered domains, which exhibit phase transition behavior, allowing for the formation of aggregates that can be used as cellular scaffolds and drug delivery vehicles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If purely crystalline or amorphous materials are used, then material structure is simple, but the ability to mimic biological materials and exhibit phase transition behavior is limited

Engineering Contradiction:

Improveability to mimic biological materialsVSAvoidmaterial structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs composite materials by combining ordered (crystalline) and disordered (amorphous) domains within the same polypeptide structure. This creates a hybrid material that exhibits both structural regularity and conformational flexibility, enabling phase transition behavior while maintaining designability. The ordered domains provide structural framework and the disordered domains enable dynamic response to environmental stimuli.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The polypeptide is segmented into distinct ordered and disordered domains, each performing specific functions. The ordered domains (e.g., alpha-helical coiled coils) provide structural stability and nucleation sites, while the disordered domains (e.g., intrinsically disordered regions) provide flexibility and enable phase transitions. This segmentation allows independent optimization of each domain's properties.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If advanced materials with precise tuning capability are developed, then phase transition behavior can be controlled, but design and synthesis complexity increases

Engineering Contradiction:

Improvephase transition tuning precisionVSAvoiddesign and synthesis complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent utilizes parameter changes by systematically varying amino acid sequences, domain lengths, and compositional ratios to tune phase transition temperatures and material properties. By changing parameters such as the length of ordered domains, the composition of disordered domains, and the ratio between different domains, precise control over material behavior is achieved without requiring completely novel synthesis approaches.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

Different regions of the polypeptide are assigned different local qualities - ordered domains with specific secondary structures for stability and disordered domains for flexibility. The local amino acid composition, charge distribution, and hydrophobicity are optimized independently in each domain to achieve desired phase transition behavior while using established protein engineering techniques.

Inventive Principle:

Principle #3Local quality

3Reliability

If materials with both ordered and disordered domains are created, then phase transition behavior is achieved, but control and measurement difficulty increases

Engineering Contradiction:

Improvephase transition behaviorVSAvoidstructure characterization difficulty

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent employs spectroscopic methods that detect changes in optical properties (absorbance, fluorescence, circular dichroism) to monitor phase transitions and structural changes. These optical signals serve as proxies for measuring the complex conformational changes occurring in the material, making the invisible transitions visible and quantifiable through standard spectroscopic techniques.

Inventive Principle:

Principle #32Color changes

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

POPs form stable, tunable, and biocompatible aggregates that support cell growth, integration, and drug delivery, with the potential to enhance vascularization and reduce immunogenicity.

Implementation Method 1

the POP exhibits phase transition behavior

Methodology Applied

Scientific EffectPhase transition: Phase Change

Implementation Method 2

tuned for specific thermal stability and porosity

Methodology Applied

Scientific EffectThermal stability: Thermal Insulation

Data Source

PatentUS12630590B2Order and disorder as a design principle for stimuli-responsive biopolymer networks

Publication Date: 2026.05.19 DUKE UNIV

AI summary

Disclosed herein are partially ordered polypeptides, which include a plurality of disordered domains and a plurality of structured domains. The partially ordered polypeptides may have phase transition behavior and form aggregates at, above, or below certain temperatures. Further provided are cellular scaffolds comprised of the partially ordered polypeptides.