1篇
您的检索式：作者名="Yael Alippe"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | IκB-ζsignaling promotes chondrocyte inflammatory phenotype,senescence,and erosive joint pathology显示文摘Osteoarthritis is a joint disease characterized by a poorly-defined inflammatory response that does not encompass a massive immune cell infiltration yet contributes to cartilage degradation and loss of joint mobility, suggesting a chondrocyte intrinsic inflammatory response. Using primary chondrocytes from joints of osteoarthritic mice and patients, we first show that these cells express ample pro-inflammatory markers and RANKL in an NF-κB dependent manner. The inflammatory phenotype of chondrocytes was recapitulated by exposure of chondrocytes to IL-1β and bone particles, which were used to model bone matrix breakdown products revealed to be present in synovial fluid of OA patients, albeit their role was not defined. We further show that bone particles and IL-1β can promote senescent and apoptotic changes in primary chondrocytes due to oxidative stress from various cellular sources such as the mitochondria. Finally, we provide evidence that inflammation, oxidative stress and senescence converge upon IκB-ζ, the principal mediator downstream of NF-κB, which regulates expression of RANKL, inflammatory, catabolic,and SASP genes. Overall, this work highlights the capacity and mechanisms by which inflammatory cues, primarily joint degradation products, i.e., bone matrix particles in concert with IL-1β in the joint microenvironment, program chondrocytes into an “inflammatory phenotype” which inflects local tissue damage. | Manoj Arra Gaurav Swarnkar Yael Alippe Gabriel Mbalaviele Yousef Abu-Amer | 2022 | Bone Research2022，10，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员