From niche to organoid: Engineering bone tissues through microenvironmental insights

Area of Science:

• Tissue Engineering
• Regenerative Medicine
• Biomaterials Science

Background:

• Bone organoids are crucial for studying bone biology and disease.
• The skeletal microenvironment (niche) critically influences bone organoid development.
• Key niche factors include extracellular matrix, mechanical, and biochemical cues, and cellular interactions.

Purpose of the Study:

• To review insights into the skeletal microenvironment's role in bone organoid construction.
• To propose strategies for recapitulating niche conditions in bone organoids.
• To highlight applications of advanced bone organoids in medicine and regeneration.

Main Methods:

• Review of current literature on skeletal microenvironment and bone organoid engineering.
• Analysis of advancements in biomaterials, extracellular matrix, and micro-structure technologies.
• Synthesis of findings to propose a foundational strategy for niche-driven organoid development.

Main Results:

• Detailed exploration of skeletal microenvironment components and their functions.
• Demonstration of how biomaterials and micro-structures enable precise niche recapitulation.
• Identification of key applications for physiologically relevant bone organoids.

Conclusions:

• Understanding and engineering the skeletal microenvironment is fundamental for advanced bone organoid development.
• Biomaterial and micro-structure innovations are enabling the creation of more accurate bone organoids.
• Microenvironment-driven bone organoids hold significant potential for drug screening, personalized medicine, and bone regeneration.