✨ Scaffold-free organoids could offer a new route to modelling the architecture of tendon and ligament tissues. ✨

This paper, published in JoVE Bioengineering, describes a self-assembled 3D tendon/ligament-like organoid model generated from human dermal fibroblast cell sheets  💪🏼 Using a three-step workflow consisting of expansion, stimulation and maturation, the authors show that fibroblasts can form robust, rod-like organoids with organised cellular layers and a rich extracellular matrix, without the influence of an artificial scaffold. The impact for the organoid field lies in providing a practical and reproducible way to model connective tissues that are still difficult to recreate in vitro, particularly where matrix organisation and tissue architecture are particularly central to function. For tendon and ligament research, this kind of model could help bridge the gap between simplified 2D culture systems and the structural complexity of native musculoskeletal tissues. It also opens up an opportunity to study how cells self-organise, remodel their matrix and respond to pro-tenogenic cues in a more tissue-like 3D environment. More broadly, scaffold-free organoid models like this may support future studies in tendon biology, injury repair, disease modelling, tissue-engineering strategies and drug testing 💊

If organoids can self-organise into tendon/ligament-like structures, what should we prioritise next: improving biological complexity, adding mechanical loading, or moving toward translational applications?

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