Amine Oxide Polymer Composition for Protein Stabilization and Blocking

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing methods for stabilizing proteins, preventing non-specific adsorption in bioassays, and providing effective cell culture media are inadequate, leading to instability, variability, and high costs, as well as safety and contamination risks.

Innovation Solution

A biocompatible polymer composition comprising a vinyl polymer with an amine oxide group and specific molecular weight, surface tension, and osmotic pressure, along with a compound having an amphoteric ion structure, is used for protein stabilization, blocking, and cell culture medium enhancement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If biologically derived proteins are used as blocking agents, then non-specific adsorption is prevented, but performance variation occurs

Engineering Contradiction:
Improveblocking agent performanceVSAvoidperformance consistency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent uses synthetic polymer compounds with specific structures (phosphorylcholine groups, amphoteric ion structures) that can be consistently manufactured without the variability inherent in biologically derived products. These synthetic blocking agents provide reliable, consistent performance across different batches, eliminating the need for lot-to-lot validation required with animal sera and biologically derived proteins.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Productivity

If animal sera are used in cell culture media, then cell proliferation and viability are enhanced, but cost increases and safety risks arise

Engineering Contradiction:
Improveantibody productivityVSAvoidsafety risks
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces expensive animal sera with synthetic polymer compounds that can be consistently manufactured. These polymers provide similar beneficial effects for cell proliferation and antibody production without the safety risks associated with animal-derived products, including prion diseases, viral contamination, and mycoplasma infection. The synthetic nature of the polymers eliminates the need for animal testing and regulatory approvals required for animal sera.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Stability of the object's composition

If polymer compounds are used as stabilizers, then protein stability is improved, but satisfactory retention rate is not achieved

Engineering Contradiction:
Improveprotein stabilityVSAvoidretention rate
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent employs composite polymer structures combining multiple functional groups (phosphorylcholine, amphoteric ions, and specific molecular weight ranges) to achieve both protein stability and high retention rates. The composite nature of these polymers allows them to interact with proteins through multiple mechanisms simultaneously, providing both stabilization and high retention performance that single-function polymers cannot achieve.

Inventive Principle:
Principle #40Composite materials

4Stability of the object's composition

If copolymers with phosphorylcholine groups are used, then protein stabilization is achieved, but productivity issues occur

Engineering Contradiction:
Improveprotein stabilizationVSAvoidproductivity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent uses synthetic polymer compounds with defined structures that can be manufactured through standardized chemical synthesis processes. These polymers eliminate the need for complex multi-step syntheses and refinements required for copolymers with phosphorylcholine groups, significantly improving productivity while maintaining protein stabilization performance.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 polymer composition effectively stabilizes proteins, enhances antigen-antibody reactions, and supports high antibody productivity and cell activity, reducing costs and safety risks in bioassays and cell culture.

Implementation Method 1

The higher-order structure of proteins is maintained through non-covalent weak polar interaction such as van der Waals interaction, hydrogen bond, and electrostatic interaction within the polypeptide chain

Methodology Applied
Scientific Effectvan der Waals interaction: Van der Waals Force

Implementation Method 2

The higher-order structure of proteins is maintained through non-covalent weak polar interaction such as van der Waals interaction, hydrogen bond, and electrostatic interaction within the polypeptide chain

Methodology Applied
Scientific Effecthydrogen bond:

Implementation Method 3

The higher-order structure of proteins is maintained through non-covalent weak polar interaction such as van der Waals interaction, hydrogen bond, and electrostatic interaction within the polypeptide chain

Methodology Applied
Scientific Effectelectrostatic interaction: Electrostatics

Implementation Method 4

a surface tension of a 1% aqueous solution at 25°C is 30 dyne/cm to 50 dyne/cm

Methodology Applied
Scientific Effectsurface tension reduction: Surfactant

Implementation Method 5

an osmotic pressure in the 1% aqueous solution is 1 mOsm/kg to 20 mOsm/kg

Methodology Applied
Scientific Effectosmotic pressure: Osmotic Pressure

Data Source

PatentEP4582490A1Biocompatible polymer composition and use thereof
Publication Date: 2025.07.09 TOYO INK MFG CO LTD
  • EP4582490A1 patent drawing
  • EP4582490A1 patent drawing
  • EP4582490A1 patent drawing

AI summary

A biocompatible polymer composition having excellent handling properties that serves as a protein stabilizer having excellent protein stabilizing performance, a blocking agent having an excellent sensitizing effect, and a cell culture medium additive capable of culturing antibody-producing cells at excellent antibody productivity and cell activity is provided. Provided is a biocompatible polymer composition that contains a vinyl polymer (A) having an amine oxide group and a mass-average molecular weight of 5,000 or more and water, the surface tension of a 1% aqueous solution of which at 25°C is 30-50 dyne/cm.