Nitrogen-Ring Compound Selective Antimicrobial Peptide Secretion

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Solution Overview

Problem

Current materials that promote the secretion of antimicrobial peptides often have unfavorable effects or induce the simultaneous secretion of inflammatory cytokines, limiting their effectiveness in treating infections and maintaining skin health.

Innovation Solution

A new compound, represented by Chemical Formula (Ia), is synthesized by dissolving a compound of Chemical Formula (II) or its hydrochloride in an organic solvent with an organic base and adding a compound of Chemical Formula (III) at a specific temperature, which effectively promotes the secretion of human β-defensin and LL-37 without inducing inflammatory cytokines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If existing materials (organic acids, amino acids) are used to promote antimicrobial peptide secretion, then antimicrobial peptide secretion is enhanced, but inflammatory cytokine secretion is simultaneously induced or unfavorable effects occur

Engineering Contradiction:
Improveantimicrobial peptide secretionVSAvoidinflammatory cytokine secretion
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical structure parameters of the secretagogue compound by introducing a specific five-membered ring containing nitrogen (pyrrolidine, pyrroline, or pyridine ring) combined with specific side chains. This structural parameter change enables selective activation of antimicrobial peptide production without triggering inflammatory cytokine release, resolving the contradiction between enhancing peptide secretion and avoiding harmful inflammatory effects.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite molecular structure combining a nitrogen-containing five-membered ring core with specific side chains (such as aromatic rings, heteroaromatic rings, or carbonyl groups). This composite molecular design allows the compound to interact selectively with antimicrobial peptide production pathways while avoiding activation of inflammatory pathways, thus resolving the technical contradiction.

Inventive Principle:
Principle #40Composite materials

2Reliability

If conventional secretagogues are used to increase antimicrobial peptide expression, then infection defense is enhanced, but skin barrier recovery is impaired due to unfavorable effects

Engineering Contradiction:
Improveinfection defenseVSAvoidskin barrier damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the chemical parameters of the secretagogue by incorporating specific nitrogen-containing five-membered ring structures with controlled side chains. This parameter change enables the compound to selectively stimulate antimicrobial peptide production without the harmful effects that damage skin barriers, thereby enhancing infection defense while preserving skin health.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention converts the potential harm of conventional secretagogues (which cause skin barrier damage) into a benefit by designing molecules that selectively activate antimicrobial peptide production without triggering harmful skin effects. The nitrogen-containing ring structure acts as a selective switch that enables beneficial peptide secretion while blocking harmful inflammatory pathways.

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

Data Source

PatentEP2617707B1Novel compound accelerating secretion of human-derived Anti-microbial peptide, method for preparing same, and composition having same as active ingredient
Publication Date: 2016.10.05 NEOPHARM CO LTD
  • EP2617707B1 patent drawingFigure 1
  • EP2617707B1 patent drawingFigure 2
  • EP2617707B1 patent drawingFigure 3

AI summary

The present invention relates to a novel compound having an acceleration effect on the secretion of human β -defensin, LL-37, which is a human-derived anti-microbial peptide, a method for preparing same, and a composition for accelerating the secretion of anti-microbial peptide having same as an active ingredient, and the compound and the composition using same of the present invention enhance the anti-microbial effect and the immunity control effect that the anti-microbial peptide has in the body by accelerating the secretion of the anti-microbial peptide in the body. The composition having the compound as an active ingredient of the present invention accelerates the secretion of innate anti-microbial peptide in the tissues and the organs in the body including the skin and can be administered through various courses including external application and oral administration, overcomes the problem of safety, the problem of resistant bacteria development, and the limitations of administration courses in a conventional anti-microbial agent, and demonstrates effective anti-microbial action.