ArticleNature communications2026
3D minichannel-morphed adipose stem cell-cartilage granule reconstituted tough grafts for repairing segmental tracheal defects in preclinical models.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Segmental tracheal reconstruction requires biomimetic substitutes that replicate both the rigid stenting of cartilage rings and the nutritional support of vascularized fascia. However, conventional tissue engineering is hampered by scarce donor chondrocytes and lengthy cell expansion. Here, we show a rapid tracheal reconstruction strategy using three-dimensional printed porous minichannel scaffolds filled with cartilage granules, platelet-rich plasma, and adipose-derived stem cells. Short-term ectopic incubation enables the grafts to acquire native-like mechanical resilience and transmural vascularization within two weeks. Upon orthotopic transplantation to repair segmental tracheal defects in rabbit and porcine models, these bioengineered grafts maintain airway patency and support preclinical animal survival for up to 115 days. Mechanistically, adipose-derived stem cells enhance cartilage granule survival within the hypoxic minichannels by upregulating glycolytic activity in chondrocytes. By eliminating the need for cell isolation and expansion, this approach offers a translatable solution for bioengineered airway repair.
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