Netrin-4 Signaling for Pancreatic and Liver Cell Differentiation

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Solution Overview

Problem

Current methods lack effective means to induce differentiation of endodermal cells into pancreatic or liver cells, and to alter their function for therapeutic purposes, particularly in treating diseases such as diabetes mellitus.

Innovation Solution

Utilizing netrin-4, a signaling molecule secreted by endothelial cells, to induce differentiation and alter the function of pancreatic or liver cells by contacting endodermal or progenitor cells with netrin-4 or its variants, thereby promoting cellular differentiation and restoring tissue function.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional methods are used to treat pancreatic or liver diseases, then existing therapeutic approaches are applied, but effective induction of endodermal cell differentiation into pancreatic or liver cells is not achieved

Engineering Contradiction:

Improveeffectiveness of cell differentiation inductionVSAvoidability to alter cell function for therapeutic purposes

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent employs netrin-4 as a signaling molecule intermediary that mediates the differentiation of endodermal cells into pancreatic or liver cells. Netrin-4 is secreted by endothelial cells and acts as a key mediator in inducing cellular differentiation, thereby resolving the inability of conventional methods to effectively differentiate cells for therapeutic purposes.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention utilizes changes in netrin-4 signaling parameters (concentration, presence/absence) to control the differentiation state of endodermal cells. By modulating netrin-4 levels or activity, the patent achieves controlled differentiation into functional pancreatic or liver cells, addressing the lack of effective differentiation induction in conventional approaches.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If netrin-4 is used to induce cell differentiation, then pancreatic and liver cell differentiation is achieved, but the complexity of the differentiation process increases

Engineering Contradiction:

Improvecell differentiation inductionVSAvoiddifferentiation process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts and isolates the specific function of netrin-4 in cell differentiation from the complex process of organ development. By focusing on netrin-4 as a discrete signaling molecule that can be administered separately, the invention simplifies the differentiation process while maintaining effectiveness, avoiding the need for complex multi-factor differentiation protocols.

Inventive Principle:

Principle #2Taking out (Extraction)

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

Netrin-4 effectively induces pancreatic and liver cell differentiation, restoring tissue function and potentially treating diseases like diabetes mellitus by enhancing cellular differentiation and function.

Implementation Method 1

netrin-4 acts as a signaling molecule secreted from endothelial cells and is capable of inducing pancreatic and liver cell differentiation in embryonic cells

Methodology Applied

Scientific EffectCell signaling:

Data Source

PatentUS8329467B2Compositions and methods for altering pancreas or liver function

Publication Date: 2012.12.11 THE INSTITUTE OF CANCER RESEARCH

AI summary

Methods for altering pancreatic and liver cell function are provided, wherein the compositions and methods are based on use of netrin-4 or on altering the activity of netrin-4.