Self-Assembling ER Stress Inhibitor for Denatured Protein Removal

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Solution Overview

Problem

Existing chemical chaperones are ineffective in removing denatured proteins and only inhibit the denaturation of normal proteins, lacking the ability to target and self-assemble with denatured proteins.

Innovation Solution

Development of a novel compound with self-assembly activity, represented by a specific chemical formula, which can co-assemble with denatured proteins and inhibit endoplasmic reticulum stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing chemical chaperones are used to inhibit endoplasmic reticulum stress, then the denaturation of normal proteins is inhibited, but the ability to remove already denatured proteins is lost

Engineering Contradiction:
Improveinhibition of protein denaturationVSAvoidability to target and remove denatured proteins
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent modifies the chemical structure of existing chemical chaperones by introducing self-assembly capable groups (such as beta-sheet forming peptides or amyloid-like structures) to create new compounds that can both inhibit denaturation and bind to/remove already denatured proteins. This structural parameter change enables dual functionality.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates composite molecular structures combining traditional chemical chaperone moieties with self-assembly domains. These composite molecules exhibit both the protective effects of conventional chaperones and the targeted removal capability through self-assembly into fibrillar structures that sequester denatured proteins.

Inventive Principle:
Principle #40Composite materials

2Stability of the object's composition

If chemical chaperones are designed to inhibit protein denaturation, then normal protein stability is improved, but effectiveness against accumulated denatured proteins is reduced

Engineering Contradiction:
Improvestability of normal proteinsVSAvoidaccumulation of denatured proteins causing cytotoxicity
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful accumulation of denatured proteins into a beneficial process by designing compounds that self-assemble into fibrillar structures capable of binding and sequestering denatured proteins. The self-assembly property, which could be considered a deviation from normal protein behavior, is harnessed to create a therapeutic mechanism for removing toxic aggregates.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The self-assembling compound acts as an intermediary between denatured proteins and the cellular degradation machinery. By forming structured assemblies with denatured proteins, these compounds facilitate their recognition and removal by autophagy or proteasomal systems, thereby eliminating cytotoxicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 novel compound effectively reduces cytotoxicity and cell death caused by denatured proteins, providing a therapeutic approach for neurodegenerative and ophthalmic diseases by targeting and inhibiting endoplasmic reticulum stress.

Implementation Method 1

A novel compound having self-assembly activity, if provided, can provide, for example, a new technique that targets a denatured protein, which is also prone to self-assemble.

Methodology Applied
Scientific EffectSelf-assembly: Self-Assembly

Implementation Method 2

The present inventors have now surprisingly found that self-assembling chemicals that co-assemble with a denatured protein directly inhibit its activity (toxicity).

Methodology Applied
Scientific EffectCo-assembly:

Data Source

PatentUS20260070921A1Compound, endoplasmic reticulum stress inhibitor, pharmaceutical product, ophthalmic agent, eye drops, composition, and method for producing compound
Publication Date: 2026.03.12 KYOTO UNIV
  • US20260070921A1 patent drawing
  • US20260070921A1 patent drawing
  • US20260070921A1 patent drawing

AI summary

A novel compound having self-assembly activity is provided. Provided is a compound, a tautomer or stereoisomer of the compound, or a salt of the compound or of the tautomer or stereoisomer of the compound, the compound being represented by the following formula:whereinR1 is a hydrogen atom or a substituent represented by —SO2—R1, wherein R11 is a hydrogen atom or any substituent,R2 and R3 each represent a hydrogen atom, a halogen, a nitro group, a linear or branched alkyl group, a linear or branched alkoxy group, or a cyano group, wherein at least one hydrogen atom of the alkyl group or of the alkoxy group is optionally further substituted with a substituent, R1 and R3 may be joined together to form a cyclic structure with the benzene ring to which they are attached, Xs independently represent a hydrogen atom or any substituent, and may be the same or different, and Z is a hydrogen atom or any substituent.