An Efficient Microfluidic Platform for Organ-Specific CyclicMultiaxial Loading and Differentiation of Progenitor Cells

A microfluidic platform applying programmable cyclic multiaxial loading to human cardiac mononuclear cell–laden native tissue scaffolds promotes cardiac structural organization and supports spontaneous contractile activity.

• Why it matters: In vitro models often use uniaxial loading, which limits their ability to mimic physiologically relevant multiaxial tissue mechanics and to study how mechanical cues regulate differentiation.
• What they did: They engineered an on-chip system for cyclic stretching and relaxation of real scaffolds with undifferentiated cells, then quantified tissue strain fields via computation and validated them with systematic experiments across distinct loading periods.
• The result: The platform produced reproducible, organ-relevant multiaxial strain profiles and, in the cardiac proof-of-concept, enabled structural organization and spontaneous contractile activity in loaded mononuclear cell–laden scaffolds.

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