Heart And Lung Organoids With ECM-Guided 3D Cell Patterning

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Solution Overview

Problem

Existing methods have not successfully produced functional three-dimensional heart and lung organoids with regionally arranged cell types and physiological functions, limiting their application in regenerative medicine and drug discovery.

Innovation Solution

A method involving culturing embryoid bodies on a gel containing laminin 111 with FGF4, BIO (6' bromoindirubin 3' oxime), BMP, and LIF, which facilitates the formation of heart and lung organoids with specific cell markers and functional myocardial contraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional differentiation induction methods are used to produce cardiac cells from pluripotent stem cells, then specific types of cardiac cells can be produced, but a functional three-dimensional heart with delicately arranged cell groups cannot be achieved

Engineering Contradiction:

Improvecell arrangement precisionVSAvoidorgan structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent changes the culture parameters by introducing a specific sequence of growth factors (BMP4, FGF10, Wnt3a) at controlled time points, and uses a defined extracellular matrix composition (laminin-411, laminin-511, collagen IV) to guide precise cell differentiation and spatial organization, achieving functional 3D heart organoids with regionally arranged cell groups

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent performs preliminary actions by first establishing a suitable extracellular matrix environment before introducing differentiation factors, and by pre-differentiating cells into specific lineages in a controlled sequence, which enables the subsequent formation of complex 3D structures with proper cell arrangement

Inventive Principle:

Principle #10Preliminary action

2Reliability

If three-dimensional culture methods are used to induce differentiation into endodermal and ectodermal tissues, then organ formation can be mimicked, but functional heart and lung organoids with three-dimensional structure have not yet been developed

Engineering Contradiction:

Improveorgan function reliabilityVSAvoidorganoid production difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent segments the differentiation process into distinct stages with specific growth factor combinations: first BMP4 for mesoderm induction, then FGF10 for epithelial development, and Wnt3a for cardiac specification, allowing controlled formation of functional 3D organoids with reliable tissue organization

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses a specially formulated extracellular matrix as an intermediary that provides structural support and biochemical signals to guide cell differentiation and organization, enabling the transition from 2D culture to functional 3D organoid formation with proper tissue architecture

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3699275B1Organ organoid and method for producing same

Publication Date: 2025.12.03 ISHINO FUMITOSHI

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AI summary

The present invention provides a method for producing a heart organoid and/or a lung organoid, comprising the step of: culturing an embryoid body in the presence of an FGF protein on a surface of a gel containing an extracellular matrix constituent protein.