4D Materials with Photoadaptable Properties Instruct and Enhance Intestinal Organoid Development

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Developmental Biology

Background:

• Intestinal organoids are in vitro models of the intestine, promising for drug testing and disease modeling.
• Current organoid culture relies on media cues, but the microenvironment (stiffness, ECM ligands) also influences development.
• Existing synthetic hydrogels aim to mimic the in vivo niche, but often neglect organoid morphology's role in functionality.

Purpose of the Study:

• To highlight the importance of controlling intestinal organoid morphology during in vitro development.
• To propose advanced biomaterials that can dynamically control microenvironmental properties.
• To enable the generation of more physiologically relevant and predictable organoid models.

Main Methods:

• Review of current organoid culture limitations regarding morphological control.
• Discussion of synthetic hydrogel platforms and their limitations.
• Proposal for integrating photoadaptable chemistries into biomaterial scaffolds.

Main Results:

• In vitro intestinal organoids often lack the boundary conditions present in vivo, leading to aberrant morphology and cellular organization.
• A lack of adaptable materials (4D materials) hinders control over spatial and temporal growth and differentiation.
• Current synthetic platforms do not sufficiently replicate the dynamic changes in the extracellular matrix during development.

Conclusions:

• Future organoid culture platforms require materials that allow user-directed control over macro- and microscale properties.
• Photoadaptable chemistries integrated into biomaterial scaffolds can provide this control.
• Replicating dynamic morphological changes and developmental timescales is crucial for next-generation organoid models.