isolation-therapeutic-application-extracellular-vesicles-derived-from

Isolation and Therapeutic Application of Extracellular Vesicles Derived from Self-Assembled Mesenchymal Stem Cell Aggregates

Extracellular vesicles (EVs) are vital mediators of intercellular communication and promising cell-free agents for regenerative medicine. Among EV ...

The Fourth Military Medical University

The dental follicle localizes the surrounding enamel organ and dental papilla of the developing tooth germ during the embryonic stage. It can differentiate and develop to form the periodontal ligament, cementum, and alveolar bone tissues. Postnatally, the dental follicle gradually degenerates, but some parts of the dental follicle remain around the impacted tooth. However, the specific cellular components and the intricate regulatory mechanisms governing the postnatal development and biological function of the dental follicle have not been completely understood.

The landscape of cell regulatory and communication networks in the human dental follicle.

The emergence of complex tissue architectures from homogeneous stem cell condensates persists as a central enigma in developmental biology. While biochemical signaling gradients have long dominated explanations of organ patterning, the mechanistic interplay between tissue-scale forces and thermodynamic constraints in driving symmetry breaking remains unresolved. This review unveils supracellular actin networks as mechanochemical integrators that establish developmental tensegrity structures, wherein Brownian ratchet-driven polymerization generates patterned stress fields to guide condensate stratification. Central to this paradigm is the dynamic remodeling of actin branches, which transduce mechanical loads into adaptive network architectures through force-modulated capping kinetics and angular reorientation. Such plasticity enables fluid-to-solid phase transitions, stabilizing organ primordia through viscoelastic microdomain formation. Crucially, these biophysical processes are functionally coupled with metabolic reprogramming events, where cytoskeletal strain modulates glycolytic flux and nuclear mechanotransduction pathways to inform differentiation decisions, forging a feedback loop between tissue mechanics and cellular fate specification. Building on these insights, we argue that limitations in current organoid self-organization may originate from incomplete reconstitution of actin-mediated mechanical coherence, and modeling of heterogeneous mesenchymal condensation dynamics offers a strategic framework to decode self-organization trajectories, bridging developmental principles with regenerative design. By synthesizing advances from molecular biophysics to tissue mechanics, this work reframes organogenesis not as a hierarchy of molecular commands, but as an emergent continuum where biochemical, mechanical, and thermodynamic constraints coevolve to sculpt living architectures.

Article	Year
The landscape of cell regulatory and communication networks in the human dental follicle. Frontiers in bioengineering and biotechnology\| PubMed ID: 39974190	2025
Cell condensation initiates organogenesis: the role of actin dynamics in supracellular self-organizing process. Cell & bioscience\| PubMed ID: 40653479	2025

Jun-Xi He

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