CD24 enrichment protects while its loss increases susceptibility of juvenile chondrocytes towards inflammation
| العنوان: | CD24 enrichment protects while its loss increases susceptibility of juvenile chondrocytes towards inflammation |
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| المؤلفون: | Piera Smeriglio, Jason L. Dragoo, William J. Maloney, Nidhi Bhutani, Jieun Lee |
| المصدر: | Arthritis Research & Therapy |
| بيانات النشر: | BioMed Central, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0301 basic medicine, Adult, Cartilage, Articular, Male, Pluripotent Stem Cells, Aging, Adolescent, Cellular differentiation, Inflammation, Cell Separation, Real-Time Polymerase Chain Reaction, 03 medical and health sciences, 0302 clinical medicine, Chondrocytes, Fetus, Downregulation and upregulation, Gene expression, medicine, Gene silencing, Humans, skin and connective tissue diseases, Child, CD24, OA, Cluster of differentiation, business.industry, Cartilage, Gene Expression Profiling, CD24 Antigen, Infant, Cell Differentiation, Flow Cytometry, Immunohistochemistry, Cell biology, Gene expression profiling, 030104 developmental biology, medicine.anatomical_structure, 030220 oncology & carcinogenesis, Child, Preschool, Immunology, Female, medicine.symptom, business, Transcriptome, Research Article |
| الوصف: | Background Diseases associated with human cartilage, including rheumatoid arthritis (RA) and osteoarthritis (OA) have manifested age, mechanical stresses and inflammation as the leading risk factors. Although inflammatory processes are known to be upregulated upon aging, we sought to gain a molecular understanding of how aging affects the tissue-specific response to inflammation. In this report, we explored the role of cluster of differentiation 24 (CD24) in regulating differential inflammatory responses in juvenile and adult human chondrocytes. Methods Differential cell-surface CD24 expression was assessed in juvenile and adult chondrocytes along with human induced pluripotent stem cell (hiPSC)-derived neonatal chondrocytes through gene expression and fluorescence-activated cell sorting (FACS) analyses. Loss of function of CD24 was achieved through silencing in chondrocytes and the effects on the response to inflammatory cues were assessed through gene expression and NFκB activity. Results CD24 expression in chondrocytes caused a differential response to cytokine-induced inflammation, with the CD24high juvenile chondrocytes being resistant to IL-1ß treatment as compared to CD24low adult chondrocytes. CD24 protects from inflammatory response by reducing NFκB activation, as an acute loss of CD24 via silencing led to an increase in NFκB activation. Moreover, the loss of CD24 in chondrocytes subsequently increased inflammatory and catabolic gene expression both in the absence and presence of IL-1ß. Conclusions We have identified CD24 as a novel regulator of inflammatory response in cartilage that is altered during development and aging and could potentially be therapeutic in RA and OA. Electronic supplementary material The online version of this article (doi:10.1186/s13075-016-1183-y) contains supplementary material, which is available to authorized users. |
| اللغة: | English |
| تدمد: | 1478-6362 1478-6354 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf57cd969e3f6d81cab2f08519c8b6cbTest http://europepmc.org/articles/PMC5153697Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....bf57cd969e3f6d81cab2f08519c8b6cb |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14786362 14786354 |
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