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Macroscale mesenchymal condensation to study cytokine-driven cellular and matrix-related changes during cartilage degradation

  • Understanding the pathophysiological processes of cartilage degradation requires adequate model systems to develop therapeutic strategies towards osteoarthritis (OA). Although different in vitro or in vivo models have been described, further comprehensive approaches are needed to study specific disease aspects. This study aimed to combine in vitro and in silico modeling based on a tissue-engineering approach using mesenchymal condensation to mimic cytokine-induced cellular and matrix-related changes during cartilage degradation. Thus, scaffold-free cartilage-like constructs (SFCCs) were produced based on self-organization of mesenchymal stromal cells (mesenchymal condensation) and i) characterized regarding their cellular and matrix composition or secondly ii) treated with interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα) for 3 weeks to simulate OA-related matrix degradation. In addition, an existing mathematical model based on partial differential equations was optimized and transferred to the underlying settings to simulate distribution of IL-1β, type II collagen degradation and cell number reduction. By combining in vitro and in silico methods, we aim to develop a valid, efficient alternative approach to examine and predict disease progression and effects of new therapeutics.

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Verfasserangaben:Marie-Christin Weber, Lisa Fischer, Alexandra Damerau, Igor Ponomarev, Moritz Pfeiffenberger, Timo Gaber, Sebastian GötschelORCiD, Jens Lang, Susanna RöblitzORCiD, Frank Buttgereit, Rainald Ehrig, Annemarie Lang
Dokumentart:Artikel
Titel des übergeordneten Werkes (Englisch):Biofabrication
Band:12
Ausgabe / Heft:4
Jahr der Erstveröffentlichung:2020
DOI:https://doi.org/10.1088/1758-5090/aba08f
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