Functional Basal-like Cell Generation via SMAD Pathway Activation

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Solution Overview

Problem

Current methods for directing the differentiation of pluripotent stem cells into specific tissue types, such as lung tissue, lack precision and efficiency in controlling cell fate, particularly in generating functional basal-like cells, which are crucial for regenerative medicine and understanding lung development and disease.

Innovation Solution

Activating the SMAD signaling pathway via TGFβ1 and BMP4 in pluripotent stem cell-derived lung bud tip progenitor organoid tissue to induce the formation of functional basal-like cells, which exhibit clonal expansion, self-renewal, and multilineage differentiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional differentiation methods are used for pluripotent stem cells, then general tissue formation occurs, but precision and efficiency in generating specific functional basal-like cells is poor

Engineering Contradiction:

Improveprecision in generating functional basal-like cellsVSAvoidefficiency in generating functional basal-like cells

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent applies parameter changes by systematically varying signaling pathway activators (TGFβ1, BMP4) and their concentrations to control cell differentiation. By adjusting these biochemical parameters, the method achieves precise generation of functional basal-like cells with improved both precision and efficiency compared to conventional differentiation approaches

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses SMAD signaling pathway components as intermediaries to transmit differentiation signals. TGFβ1 and BMP4 activate SMAD proteins that mediate the conversion of pluripotent stem cells into functional basal-like cells, providing a controlled mechanism that enhances both precision and efficiency of differentiation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If activation of SMAD signaling via TGFβ1 and BMP4 is used, then functional basal-like cells are robustly induced, but the complexity of the differentiation protocol increases

Engineering Contradiction:

Improverobust induction of functional basal-like cellsVSAvoidcomplexity of differentiation protocol

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent merges multiple signaling pathway activators (TGFβ1 and BMP4) into a single coordinated treatment protocol. By combining these activators that converge on the SMAD pathway, the method achieves robust induction of functional basal-like cells while managing protocol complexity through integrated rather than separate treatments

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent employs the SMAD signaling pathway as a universal mechanism that responds to multiple activators (TGFβ1, BMP4). This multi-functional approach allows a single signaling pathway to orchestrate the differentiation process, achieving robust cell induction without requiring entirely separate mechanisms for each signal

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 approach provides a robust and efficient in vitro system for generating functional basal-like cells, enhancing our understanding of lung development and offering implications for regenerative medicine and basal cell development in other organs.

Implementation Method 1

Activating the SMAD signaling pathway via activation of TGFβ1 (and/or the TGFβ signaling pathway) and BMP4 (and/or the BMP signaling pathway)

Methodology Applied

Scientific EffectSMAD signaling pathway activation:

Data Source

PatentUS20230279348A1Compositions and methods for obtaining functional basal-like cells

Publication Date: 2023.09.07 THE RGT UNIV OF MICHIGAN

AI summary

The invention disclosed herein generally relates to methods and systems for converting stem cells into specific tissue(s) or cells through directed differentiation. In particular, the invention disclosed herein relates to methods and systems for promoting functional basal-like cells from pluripotent stem cell-derived lung bud tip progenitor organoid tissue through activation of SMAD signaling via activation of TGFβ1 (and/or the TGFβ signaling pathway) and BMP4 (and/or the BMP signaling pathway).