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Blockage of bone morphogenetic protein signalling counteracts hypertrophy in a human osteoarthritic micro-cartilage model

Chawla, Shikha and Berkelar, Majoska and Dasen, Boris and Halleux, Christine and Kramer, Ina and Guth-Gundel, Sabine and Ghosh, Sourab and Martin, Ivan and Barbero, Andrea and Occhetta, Paola (2020) Blockage of bone morphogenetic protein signalling counteracts hypertrophy in a human osteoarthritic micro-cartilage model. Journal of cell science, 133 (23). ISSN 14779137

Abstract

Bone morphogenetic protein (BMP) signalling plays a significant role during embryonic cartilage development and has been associated with osteoarthritis (OA) pathogenesis, being in both cases involved in triggering hypertrophy. Inspired by recent findings that BMP inhibition counteracts hypertrophic differentiation of human mesenchymal progenitors, we hypothesized that selective inhibition of BMP signalling would mitigate hypertrophic features in OA cartilage. First, a 3D in vitro OA micro-cartilage model was established using minimally expanded OA chondrocytes that was reproducibly able to capture OA-like hypertrophic features. BMP signalling was then restricted by means of two BMP receptor type I inhibitors, resulting in reduction of OA hypertrophic traits while maintaining synthesis of cartilage extracellular matrix. Our findings open potential pharmacological strategies for counteracting cartilage hypertrophy in OA and support the broader perspective that key signalling pathways known from developmental processes can guide the understanding, and possibly the mitigation, of adult pathological features.

Item Type: Article
Keywords: BMP signalling Hypertrophy In vitro models Osteoarthritis
Date Deposited: 16 Jan 2021 00:45
Last Modified: 16 Jan 2021 00:45
URI: https://oak.novartis.com/id/eprint/42040

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