PMID- 22210270 OWN - NLM STAT- MEDLINE DCOM- 20130507 LR - 20211021 IS - 1437-160X (Electronic) IS - 0172-8172 (Linking) VI - 32 IP - 12 DP - 2012 Dec TI - OPG inhibits gene expression of RANK and CAII in mouse osteoclast-like cell. PG - 3993-8 LID - 10.1007/s00296-011-2338-4 [doi] AB - This study was designed to determine the effects of the osteoprotegerin (OPG) on the mRNA expression of carbonic anhydrase II (CAII) and the receptor activator of NF-kappaB (RANK) in mouse osteoclast-like cells. Marrow cells were harvested from femora and tibiae of mouse and cultured in 6-well chamber slides. After 1 day of incubation, the marrow cells were exposed to M-CSF (25 ng/ml), RANKL (50 ng/ml), and different concentrations of OPG (50, 75, and 100 ng/ml, respectively) for 3 days. Osteoclast-like cells were confirmed by both tartrate-resistant acid phosphatase (TRAP) stain and bone resorption assay. The expression of RANK and CAIImRNA was determined with real-time fluorescent quantitative polymerase chain reaction. The numbers of multinucleated, TRAP-positive osteoclast-like cells, and resorption pits formed were observed. Compared with the M-CSF + RANKL group, RANKmRNA expression was statistically decreased in the M-CSF and M-CSF + RANKL + OPG (100 ng/ml) groups (P = 0.004, P = 0.024, respectively); Compared with the M-CSF, M-CSF + RANKL, and M-CSF + RANKL + OPG (100 ng/ml) group, CAIImRNA expression in the M-CSF + RANKL + OPG (75 ng/ml) groups was statistically decreased (P = 0.001, P = 0.008, and P = 0.036, respectively). These data suggest that OPG could regulate the expression of RANK and CA II mRNA in the marrow culture system. FAU - Chen, Jian AU - Chen J AD - Department of Rehabilitation, Zhong Shang Hospital, Xiamen University, Xiamen 361004, China. chenjian5@medmail.com.cn FAU - He, Jian-Quan AU - He JQ FAU - Zhen, Shu-Yu AU - Zhen SY FAU - Huang, Li-Qun AU - Huang LQ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111231 PL - Germany TA - Rheumatol Int JT - Rheumatology international JID - 8206885 RN - 0 (Osteoprotegerin) RN - 0 (Receptor Activator of Nuclear Factor-kappa B) RN - EC 4.2.1.- (Carbonic Anhydrase II) SB - IM MH - Animals MH - Bone and Bones/cytology/drug effects/metabolism MH - Carbonic Anhydrase II/*genetics/metabolism MH - Cells, Cultured MH - Gene Expression/*drug effects MH - Mice MH - Osteoclasts/cytology/*drug effects/metabolism MH - Osteoprotegerin/*pharmacology MH - Receptor Activator of Nuclear Factor-kappa B/*genetics/metabolism EDAT- 2012/01/03 06:00 MHDA- 2013/05/08 06:00 CRDT- 2012/01/03 06:00 PHST- 2011/08/08 00:00 [received] PHST- 2011/12/20 00:00 [accepted] PHST- 2012/01/03 06:00 [entrez] PHST- 2012/01/03 06:00 [pubmed] PHST- 2013/05/08 06:00 [medline] AID - 10.1007/s00296-011-2338-4 [doi] PST - ppublish SO - Rheumatol Int. 2012 Dec;32(12):3993-8. doi: 10.1007/s00296-011-2338-4. Epub 2011 Dec 31.