PMID- 36821040 OWN - NLM STAT- MEDLINE DCOM- 20230307 LR - 20230307 IS - 2523-899X (Electronic) IS - 2523-899X (Linking) VI - 43 IP - 1 DP - 2023 Feb TI - Nucleus Pulposus Cells from Calcified Discs Promote the Degradation of the Extracellular Matrix through Upregulation of the GATA3 Expression. PG - 146-155 LID - 10.1007/s11596-022-2686-1 [doi] AB - OBJECTIVE: Disc calcification is strongly associated with disc degeneration; however, the underlying mechanisms driving its pathogenesis are poorly understood. This study aimed to provide a gene expression profile of nucleus pulposus cells (NPCs) from calcified discs, and clarify the potential mechanism in disc degeneration. METHODS: Primary NPCs were isolated from calcified and control discs (CAL-NPC and CON-NPC), respectively. The proliferation and extracellular matrix (ECM) metabolism capacities of the cells were evaluated using MTT and Western blotting, respectively. RNA sequencing was used to identify differentially expressed genes (DEGs) in the CAL-NPCs. The biological functions of the DEGs were analyzed using the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases. The transcription factor database and Cytoscape software were used to construct the transcription factor-DEGs regulatory network. The role of the verified transcription factor in NPC proliferation and ECM metabolism was also investigated. RESULTS: The CAL-NPCs exhibited a lower proliferation rate and higher ECM degradation capacity than the CON-NPCs. In total, 375 DEGs were identified in the CAL-NPCs. The GO and KEGG analyses showed that the DEGs were primarily involved in the regulation of ribonuclease activity and NF-kappa B and p53 signaling pathways. GATA-binding protein 3 (GATA3) with the highest verified levels was selected for further studies. Overexpression of GATA3 in the CON-NPCs significantly inhibited their proliferation and promoted their ECM degradation function, while the knockdown of GATA3 in the CAL-NPCs resulted in the opposite phenotypes. CONCLUSION: This study provided a comprehensive gene expression profile of the NPCs from the calcified discs and supported that GATA3 could be a potential target for reversing calcification-associated disc degeneration. CI - (c) 2023. Huazhong University of Science and Technology. FAU - Dong, Yu-Lei AU - Dong YL AD - Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China. FAU - Tang, Ning AU - Tang N AD - Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China. FAU - Zhao, Hong AU - Zhao H AD - Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China. FAU - Liang, Jin-Qian AU - Liang JQ AD - Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China. string218@126.com. LA - eng PT - Journal Article DEP - 20230223 PL - China TA - Curr Med Sci JT - Current medical science JID - 101729993 RN - 0 (NF-kappa B) RN - 0 (GATA3 protein, human) RN - 0 (GATA3 Transcription Factor) SB - IM MH - Humans MH - *Nucleus Pulposus/metabolism/pathology MH - *Intervertebral Disc Degeneration MH - Up-Regulation MH - Extracellular Matrix/metabolism/pathology MH - NF-kappa B/metabolism MH - GATA3 Transcription Factor/metabolism OTO - NOTNLM OT - GATA-binding protein 3 OT - RNA sequencing OT - calcified disc OT - disc degeneration OT - nucleus pulposus cells EDAT- 2023/02/24 06:00 MHDA- 2023/03/08 06:00 CRDT- 2023/02/23 11:37 PHST- 2022/03/20 00:00 [received] PHST- 2022/05/25 00:00 [accepted] PHST- 2023/02/24 06:00 [pubmed] PHST- 2023/03/08 06:00 [medline] PHST- 2023/02/23 11:37 [entrez] AID - 10.1007/s11596-022-2686-1 [pii] AID - 10.1007/s11596-022-2686-1 [doi] PST - ppublish SO - Curr Med Sci. 2023 Feb;43(1):146-155. doi: 10.1007/s11596-022-2686-1. Epub 2023 Feb 23.