PMID- 31762289 OWN - NLM STAT- MEDLINE DCOM- 20220329 LR - 20240405 IS - 1947-6043 (Electronic) IS - 1947-6035 (Print) IS - 1947-6035 (Linking) VI - 13 IP - 1_suppl DP - 2021 Dec TI - DR4-Associated Death Receptor Signal Promotes Cartilage Damage in Patients With Kashin-Beck Disease. PG - 789S-796S LID - 10.1177/1947603519886626 [doi] AB - Purpose. To explore the relationship between the death receptor (DR) and the pathological progression of Kashin-Beck disease (KBD). Design. KBD cartilage samples were collected from 15 patients diagnosed according to the "National Diagnostic Criteria of KBD" in China. In vitro monolayer chondrocytes were cultured in complete medium. Caspase-3 and caspase-8 activities in chondrocytes were analyzed using a kit. Nuclear morphology was observed by Hoechst 33258 staining, apoptosis was verified by flow cytometry analysis, and DR molecules were detected using Western blotting and quantitative real-time reverse transcription polymerase chain reaction analysis. Results. Early apoptotic rates of KBD and osteoarthritis (OA) chondrocytes were higher than those of normal control (NC) cells. Excessive apoptotic nuclei were observed in OA and KBD cells after Hoechst 33258 staining. Activities of both caspase-3 and caspase-8 were higher in KBD and OA cells than in NC cells. The average DR4 mRNA level in KBD cells was 3.301-fold higher than that in NC cells, Fas-associating protein with death domain (FADD) transcript level in KBD cells was 2.528-fold higher than that in NC cells. Western blot analyses showed that FAS, DR4, DR5, caspase-3, and FADD were upregulated in the KBD and OA groups compared with the NC group. High expression of caspase-8 in KBD compared with NC was verified, whereas cellular FLICE-inhibitory protein (c-FLIP) in KBD was significantly downregulated. Conclusions. KBD and OA chondrocytes showed obvious FADD-caspase-dependent apoptosis, which is related to the DR pathway. Apoptosis in KBD articular cartilage is mainly related to FAS/DR4-FADD-caspase signaling, and OA is associated with FAS/DR4/DR5-FADD-caspase signaling. FAU - Wu, Shixun AU - Wu S AD - Department of Orthopedics Surgery, Shaanxi Provincial People's Hospital, Xi'an JiaoTong University, Xi'an, People's Republic of China. AD - Institute of Endemic Diseases of School of Public Health, Health Science Center of Xi'an JiaoTong University, NHC Key Laboratory of Trace Elements and Endemic Diseases, Xi'an, Shaanxi, People's Republic of China. AD - Collaborative Innovation Center of Endemic Diseases and Health Promotion in Silk Road Region, Xi'an JiaoTong University, Xi'an, People's Republic of China. FAU - Yi, Zhi AU - Yi Z AD - Department of Orthopedics Surgery, Shaanxi Provincial People's Hospital, Xi'an JiaoTong University, Xi'an, People's Republic of China. FAU - Ling, Ming AU - Ling M AD - Department of Orthopedics Surgery, Shaanxi Provincial People's Hospital, Xi'an JiaoTong University, Xi'an, People's Republic of China. FAU - Liu, Shizhang AU - Liu S AD - Department of Orthopedics Surgery, Shaanxi Provincial People's Hospital, Xi'an JiaoTong University, Xi'an, People's Republic of China. FAU - Sun, Zhengming AU - Sun Z AD - Department of Orthopedics Surgery, Shaanxi Provincial People's Hospital, Xi'an JiaoTong University, Xi'an, People's Republic of China. FAU - Guo, Xiong AU - Guo X AD - Institute of Endemic Diseases of School of Public Health, Health Science Center of Xi'an JiaoTong University, NHC Key Laboratory of Trace Elements and Endemic Diseases, Xi'an, Shaanxi, People's Republic of China. AD - Collaborative Innovation Center of Endemic Diseases and Health Promotion in Silk Road Region, Xi'an JiaoTong University, Xi'an, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191124 PL - United States TA - Cartilage JT - Cartilage JID - 101518378 RN - 0 (Receptors, TNF-Related Apoptosis-Inducing Ligand) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 8) SB - IM MH - Cartilage, Articular/*metabolism MH - Caspase 3/metabolism MH - Caspase 8 MH - Chondrocytes/metabolism MH - *Extracellular Matrix MH - Humans MH - Kashin-Beck Disease/*complications/*metabolism MH - Osteoarthritis/*metabolism MH - *Receptors, TNF-Related Apoptosis-Inducing Ligand PMC - PMC8808889 OTO - NOTNLM OT - Kashin-Beck disease OT - apoptosis OT - death receptor OT - osteoarthritis OT - pathogenesis COIS- Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2019/11/26 06:00 MHDA- 2022/03/30 06:00 PMCR- 2022/06/01 CRDT- 2019/11/26 06:00 PHST- 2019/11/26 06:00 [pubmed] PHST- 2022/03/30 06:00 [medline] PHST- 2019/11/26 06:00 [entrez] PHST- 2022/06/01 00:00 [pmc-release] AID - 10.1177_1947603519886626 [pii] AID - 10.1177/1947603519886626 [doi] PST - ppublish SO - Cartilage. 2021 Dec;13(1_suppl):789S-796S. doi: 10.1177/1947603519886626. Epub 2019 Nov 24.