ADT-OH H2S Donor for Neural Precursor Cell Differentiation Control

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Solution Overview

Problem

Current methods for neural precursor cell transplantation fail to effectively induce differentiation into neurons and oligodendrocytes while inhibiting astrocyte formation, leading to insufficient repair of nervous system damage.

Innovation Solution

Utilizing the slow-releasing hydrogen sulfide organic donor ADT-OH to induce the differentiation of neural precursor cells into neurons and oligodendrocytes, while inhibiting differentiation into astrocytes, through controlled in-vitro culture and transplantation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If neural precursor cells are transplanted into damaged nervous system, then cell replenishment is achieved, but cells differentiate into astrocytes forming scar tissues instead of neurons

Engineering Contradiction:
Improvecell countVSAvoidastrocyte scar formation
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the chemical environment through H2S concentration control. ADT-OH donates H2S to alter the biochemical parameters of the culture medium, which directs neural precursor cell differentiation toward neurons and oligodendrocytes while suppressing astrocyte formation. This chemical parameter modification resolves the contradiction by changing the differentiation outcome without altering the transplanted cell quantity.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

ADT-OH serves as an intermediary substance that mediates between the transplanted neural precursor cells and the damaged nervous system environment. The H2S donor acts as a chemical mediator that modulates cell differentiation behavior, enabling the transplanted cells to generate beneficial neuron types rather than harmful astrocyte scar tissues.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If H2S concentration increases rapidly to provide neuroprotection, then protective effect is enhanced, but lethality occurs due to excessive concentration

Engineering Contradiction:
Improveneuroprotection effectVSAvoidlethality from high H2S
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

ADT-OH implements periodic action through controlled, gradual H2S release rather than abrupt concentration spikes. The donor molecule releases H2S continuously at a regulated rate, maintaining protective concentrations over time without reaching lethal thresholds. This temporal control pattern resolves the contradiction between providing sufficient neuroprotection and avoiding toxicity.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent applies dynamics by using a H2S donor that provides dynamic, adaptive concentration control. ADT-OH releases H2S in response to cellular needs and environmental conditions, allowing the system to maintain optimal protective levels while automatically preventing excessive accumulation that would cause lethality.

Inventive Principle:
Principle #15Dynamics

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

ADT-OH promotes neuronal and oligodendrocyte differentiation, reduces astrocyte formation, and enhances cell survival, providing a therapeutic approach for nervous system repair.

Implementation Method 1

ADT-OH releases H2S molecules in vivo, and provides neuroprotection against glutamate-induced oxidative stress

Methodology Applied
Scientific EffectHydrogen sulfide release: Decomposition (biological)

Data Source

PatentUS12478608B2Use of slow-releasing hydrogen sulfide organic donor ADT-OH in the preparation of drugs for treating nervous system diseases
Publication Date: 2025.11.25 SUZHOU UNIV
  • US12478608B2 patent drawing
  • US12478608B2 patent drawing

AI summary

The present invention relates to use of slow-releasing hydrogen sulfide organic donor ADT-OH drugs in the differentiation of neural precursor cells. ADT-OH can induce more directed differentiation of neural precursor cells into neurons and oligodendrocytes and less differentiation into astrocytes, promote the axon growth of neurons, and reduce the death of neural precursor cells, thereby providing a direction for the transplantation of neural precursor cells to repair damaged nerves. ADT-OH will likely become a new drug target for the clinical treatment of nervous system diseases.