Human osteoarthritis cartilage-derived stromal cells activate joint degeneration through TGF-beta lateral signaling.
Human osteoarthritis cartilage-derived stromal cells activate joint degeneration through TGF-beta lateral signaling.
复制标题
人骨关节炎软骨衍生的基质细胞通过TGF-β侧向信号传导激活关节变性。
DOI：
10.1096/fj.202001448r
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发表时间：
2020-12
期刊：
影响因子：
--
通讯作者：
Chen Q
中科院分区：
文献类型：
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作者：
Liu W;Feng M;Jayasuriya CT;Peng H;Zhang L;Guan Y;Froehlich JA;Terek RM;Chen Q
Human osteoarthritis cartilage contains chondrocytes (OAC) and mesenchymal stromal cells (OA-MSC). Here, we found that TGF-β had different effects on OA-MSC and OAC, and revealed its lateral signaling mechanism in OA. RNAseq analysis indicated that OA-MSC expressed the same level of Bone Morphogenetic Protein (BMP) Receptor-1A as OAC but only 1/12 of Transforming Growth Factor beta (TGF-β) Receptor-1. While TGF-β specifically activated SMAD2 in OAC, it also activated BMP signaling-associated SMAD1 in OA-MSC. While TGF-β stimulated chondrogenesis in OAC, it induced hypertrophy, mineralization, and MMP-13 in OA-MSC. Inhibiting TGF-βR1 suppressed MMP-13 in OA-MSC but stimulated it in OAC. In contrast, by specifically targeting BMPR1A/ACVR1 in both cell types, LDN193189 inhibits cartilage degeneration through suppressing hypertrophy and MMP-13 in a mouse osteoarthritis model. Thus, LDN193189, a drug under development to inhibit constitutive BMP signaling during heterotopic ossification, may be re-purposed for OA treatment.
