PMID- 12511413 OWN - NLM STAT- MEDLINE DCOM- 20030620 LR - 20210206 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 101 IP - 9 DP - 2003 May 1 TI - Two histone deacetylase inhibitors, trichostatin A and sodium butyrate, suppress differentiation into osteoclasts but not into macrophages. PG - 3451-9 AB - Histone deacetylase (HDAC) inhibitors are emerging as a new class of anticancer therapeutic agents and have been demonstrated to induce differentiation in some myeloid leukemia cell lines. In this study, we show that HDAC inhibitors have a novel action on osteoclast differentiation. The effect of 2 HDAC inhibitors, trichostatin A (TSA) and sodium butyrate (NaB), on osteoclastogenesis was investigated using rat and mouse bone marrow cultures and a murine macrophage cell line RAW264. Both TSA and NaB inhibited the formation of preosteoclast-like cells (POCs) and multinucleated osteoclast-like cells (MNCs) in rat bone marrow culture. By reverse transcription-polymerase chain reaction analysis, TSA reduced osteoclast-specific mRNA expression of cathepsin K and calcitonin receptor (CTR). In contrast, TSA and NaB did not affect the formation of bone marrow macrophages (BMMs) induced by macrophage colony-stimulating factor as examined by nonspecific esterase staining. Fluorescence-activated cell sorting analysis showed that TSA did not affect the surface expression of macrophage markers for CD11b and F4/80 of BMMs. TSA and NaB also inhibited osteoclast formation and osteoclast-specific mRNA expression in RAW264 cells stimulated with receptor activator of nuclear factor-kappa B (NF-kappa B) ligand (RANKL). Transient transfection assay revealed that TSA and NaB dose dependently reduced the sRANKL-stimulated or tumor necrosis factor alpha (TNF-alpha)-stimulated transactivation of NF-kappa B-dependent reporter genes. The treatment of RAW264 cells with TSA and NaB inhibited TNF-alpha-induced nuclear translocation of NF-kappa B and sRANKL-induced activation of p38 mitogen-activated protein kinase (MAPK) signals. These data suggest that both TSA and NaB exert their inhibitory effects by modulating osteoclast-specific signals and that HDAC activity regulates the process of osteoclastogenesis. FAU - Rahman, Md Mizanur AU - Rahman MM AD - Department of Microbiology, Saga Medical School, Nabeshima, Saga, Japan. FAU - Kukita, Akiko AU - Kukita A FAU - Kukita, Toshio AU - Kukita T FAU - Shobuike, Takeo AU - Shobuike T FAU - Nakamura, Takahiro AU - Nakamura T FAU - Kohashi, Osamu AU - Kohashi O LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20030102 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antigens, Differentiation) RN - 0 (Butyrates) RN - 0 (CD11b Antigen) RN - 0 (Carrier Proteins) RN - 0 (Enzyme Inhibitors) RN - 0 (Histone Deacetylase Inhibitors) RN - 0 (Hydroxamic Acids) RN - 0 (Macrophage-1 Antigen) RN - 0 (Membrane Glycoproteins) RN - 0 (NF-kappa B) RN - 0 (RANK Ligand) RN - 0 (RNA, Messenger) RN - 0 (Receptor Activator of Nuclear Factor-kappa B) RN - 0 (Receptors, Calcitonin) RN - 0 (Tnfrsf11a protein, mouse) RN - 0 (Tnfsf11 protein, mouse) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (monocyte-macrophage differentiation antigen) RN - 3X2S926L3Z (trichostatin A) RN - EC 3.4.- (Cathepsins) RN - EC 3.4.22.38 (Cathepsin K) RN - EC 3.4.22.38 (Ctsk protein, mouse) RN - EC 3.4.22.38 (Ctsk protein, rat) SB - IM MH - Animals MH - Antigens, Differentiation/analysis MH - Bone Marrow Cells/cytology/*drug effects MH - Butyrates/*pharmacology MH - CD11b Antigen/analysis MH - Carrier Proteins/pharmacology MH - Cathepsin K MH - Cathepsins/genetics MH - Cell Differentiation/drug effects MH - Cells, Cultured/cytology/drug effects MH - Enzyme Inhibitors/*pharmacology MH - Flow Cytometry MH - *Histone Deacetylase Inhibitors MH - Hydroxamic Acids/*pharmacology MH - MAP Kinase Signaling System MH - Macrophage-1 Antigen/analysis MH - Macrophages/*chemistry/drug effects MH - Male MH - Membrane Glycoproteins/pharmacology MH - Mice MH - NF-kappa B/metabolism MH - Osteoclasts/*cytology MH - RANK Ligand MH - RNA, Messenger/biosynthesis MH - Rats MH - Rats, Sprague-Dawley MH - Receptor Activator of Nuclear Factor-kappa B MH - Receptors, Calcitonin/genetics MH - Transfection MH - Tumor Necrosis Factor-alpha/antagonists & inhibitors/pharmacology EDAT- 2003/01/04 04:00 MHDA- 2003/06/21 05:00 CRDT- 2003/01/04 04:00 PHST- 2003/01/04 04:00 [pubmed] PHST- 2003/06/21 05:00 [medline] PHST- 2003/01/04 04:00 [entrez] AID - S0006-4971(20)50723-4 [pii] AID - 10.1182/blood-2002-08-2622 [doi] PST - ppublish SO - Blood. 2003 May 1;101(9):3451-9. doi: 10.1182/blood-2002-08-2622. Epub 2003 Jan 2.