PMID- 23335273 OWN - NLM STAT- MEDLINE DCOM- 20130618 LR - 20161026 IS - 1529-0131 (Electronic) IS - 0004-3591 (Linking) VI - 65 IP - 5 DP - 2013 May TI - Suppression of hyaluronan synthesis alleviates inflammatory responses in murine arthritis and in human rheumatoid synovial fibroblasts. PG - 1160-70 LID - 10.1002/art.37861 [doi] AB - OBJECTIVE: To clarify the roles of hyaluronan (HA) in joint inflammation and the process of joint destruction, using 4-methylumbelliferone (4-MU), an inhibitor of HA synthesis, in a mouse model of collagen-induced arthritis (CIA) and in a monolayer culture of fibroblast-like synoviocytes (FLS) derived from patients with rheumatoid arthritis. METHODS: DAB/1J mice were immunized with type II collagen. The effects of 4-MU were evaluated by the physiologic arthritis score, paw swelling, the histologic arthritis score, and expression of matrix metalloproteinase 3 (MMP-3) and MMP-13 in chondrocytes and synovial tissue. In vitro, the effect of 4-MU on messenger RNA and protein expression of MMP-1 and MMP-3 was determined. The effects of 4-MU on HA deposition and on serum/medium concentrations of HA were analyzed using biotinylated HA binding protein staining and an HA binding assay, respectively. RESULTS: Treatment with 4-MU in mice with CIA dramatically decreased the severity of arthritis (based on the arthritis score), paw thickness, and histopathologic changes. MMP-3 and MMP-13 expression in chondrocytes and synovial cells was significantly inhibited by 4-MU in vivo. Treatment with 4-MU also inhibited MMP-1 and MMP-3 expression in tumor necrosis factor alpha-stimulated FLS, in a dose-dependent manner. The 4-MU-induced decreases in the serum HA concentration in mice with CIA and in "medium" and "pericellular" HA concentrations in cultured FLS support the contention that the inhibitory mechanism of 4-MU is mediated by HA suppression. CONCLUSION: Reduced disease activity induced by 4-MU in mice with CIA revealed HA to be a crucial regulator in the course of arthritis. Therefore, 4-MU is a potential therapeutic agent in arthritis, and its inhibitory mechanism is possibly mediated by suppression of HA synthesis. CI - Copyright (c) 2013 by the American College of Rheumatology. FAU - Yoshioka, Yutaka AU - Yoshioka Y AD - Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan. FAU - Kozawa, Eiji AU - Kozawa E FAU - Urakawa, Hiroshi AU - Urakawa H FAU - Arai, Eisuke AU - Arai E FAU - Futamura, Naohisa AU - Futamura N FAU - Zhuo, Lisheng AU - Zhuo L FAU - Kimata, Koji AU - Kimata K FAU - Ishiguro, Naoki AU - Ishiguro N FAU - Nishida, Yoshihiro AU - Nishida Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Arthritis Rheum JT - Arthritis and rheumatism JID - 0370605 RN - 0 (Adjuvants, Immunologic) RN - 0 (Antirheumatic Agents) RN - 0 (RNA, Messenger) RN - 0 (RNA, Small Interfering) RN - 3T5NG4Q468 (Hymecromone) RN - 9004-61-9 (Hyaluronic Acid) SB - IM CIN - J Biol Chem. 2016 Jun 3;291(23):12087-104. PMID: 27129266 MH - Adjuvants, Immunologic/*antagonists & inhibitors/biosynthesis/blood MH - Administration, Oral MH - Animals MH - Antirheumatic Agents/pharmacology MH - Arthritis, Experimental/drug therapy/*metabolism/pathology MH - Arthritis, Rheumatoid/drug therapy/*metabolism/pathology MH - Cells, Cultured MH - Edema/chemically induced/drug therapy/pathology MH - Fibroblasts/drug effects/*metabolism/pathology MH - Gene Knockdown Techniques MH - Hindlimb/drug effects/pathology MH - Humans MH - Hyaluronic Acid/*antagonists & inhibitors/biosynthesis/blood MH - Hymecromone/analogs & derivatives/pharmacology MH - Mice MH - Mice, Inbred DBA MH - RNA, Messenger/antagonists & inhibitors/metabolism MH - RNA, Small Interfering/genetics MH - Stifle/drug effects/pathology MH - Synovial Membrane/drug effects/*metabolism/pathology EDAT- 2013/01/22 06:00 MHDA- 2013/06/19 06:00 CRDT- 2013/01/22 06:00 PHST- 2012/06/05 00:00 [received] PHST- 2013/01/03 00:00 [accepted] PHST- 2013/01/22 06:00 [entrez] PHST- 2013/01/22 06:00 [pubmed] PHST- 2013/06/19 06:00 [medline] AID - 10.1002/art.37861 [doi] PST - ppublish SO - Arthritis Rheum. 2013 May;65(5):1160-70. doi: 10.1002/art.37861.