Cardiomyocyte Differentiation via Composite Growth Factor Cocktail

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Solution Overview

Problem

Heart tissue is vulnerable to irreparable damage due to its limited reparative capacity, necessitating the development of effective cell-based regenerative cardiovascular medicine to repair or regenerate damaged cardiac tissue.

Innovation Solution

The use of stem cells, specifically human mesenchymal stem cells from bone marrow, which are differentiated into cardiomyocytes by contacting them with a composition containing TGF-β, BMP, TNF-α, IGF-1, FGF-4, IL-6, LIF, VEGF-A, retinoic acid, and α-thrombin, maintaining the ability to differentiate into cardiomyocytes for multiple cell divisions and forming functional cardiac tissue.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If stem cells are differentiated into cardiomyocytes using a composition of growth factors, then the ability to repair damaged heart tissue is improved, but the complexity of the differentiation process increases

Engineering Contradiction:

Improverepair capacity of heart tissueVSAvoidcomplexity of differentiation process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple growth factors (TGF-β, BMP, TNF-α, IGF-1, FGF-4, IL-6, LIF, VEGF-A, retinoic acid, and α-thrombin) into a single composite differentiation composition. This merging of multiple biological agents into one unified treatment protocol enables effective cardiomyocyte differentiation while simplifying the overall process compared to using multiple separate treatments.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The differentiation composition functions as a composite biological material, combining ten different growth factors and cytokines in specific concentrations. This composite approach creates a synergistic effect that promotes cardiac differentiation more effectively than individual factors alone, while providing a standardized protocol that reduces procedural complexity.

Inventive Principle:

Principle #40Composite materials

2Manufacturing precision

If the differentiation composition is applied for extended periods, then the functional maturity of cardiomyocytes is improved, but the time required for cell production increases

Engineering Contradiction:

Improvefunctional maturity of cardiomyocytesVSAvoidtime required for cell production

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies the complete differentiation composition during early stages of cardiomyocyte development, providing all necessary growth factors and cytokines from the beginning. This preliminary action ensures that cells are pre-programmed with the correct differentiation signals, accelerating maturation and reducing the total time required to produce functionally mature cardiomyocytes compared to staged or sequential approaches.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The differentiation composition is maintained continuously over the differentiation period, ensuring uninterrupted exposure to all necessary growth factors. This continuous action prevents gaps in signaling that could delay maturation, allowing cardiomyocytes to progress steadily through developmental stages and achieve functional maturity more quickly.

Inventive Principle:

Principle #20Continuity of useful action

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

This method enables the production of human cardiomyocytes with the capacity for proliferation, nuclear translocation of cardiac transcription factors, sarcomeric organization, and functional excitation-contraction coupling, effectively repairing or regenerating heart tissue in patients with conditions like ischemic cardiomyopathy or heart failure.

Implementation Method 1

contacting them with a composition containing TGF-β, BMP, TNF-α, IGF-1, FGF-4, IL-6, LIF, VEGF-A, retinoic acid, and α-thrombin, maintaining the ability to differentiate into cardiomyocytes

Methodology Applied

Scientific EffectCell differentiation:

Implementation Method 2

production of human cardiomyocytes with the capacity for proliferation, nuclear translocation of cardiac transcription factors

Methodology Applied

Scientific EffectNuclear translocation:

Implementation Method 3

functional excitation-contraction coupling, effectively repairing or regenerating heart tissue

Methodology Applied

Scientific EffectExcitation-contraction coupling:

Data Source

PatentUS9765298B2Methods and materials for providing cardiac cells

Publication Date: 2017.09.19 MAYO FOUNDATION FOR MEDICAL EDUCATION & RESEARCH

AI summary

This document provides methods and materials relating to cardiac cells. For example, this document provides methods and materials that can be used to obtain cells having the ability to differentiate into cardiomyocytes. Such cells can be used to repair damaged heart tissue. For example, cells having the ability to differentiate into cardiomyocytes can be used to repair or regenerate heart tissue in patients with a cardiac condition (e.g., ischemic cardiomyopathy, myocardial infarction, or heart failure).