PMID- 24330147 OWN - NLM STAT- MEDLINE DCOM- 20161107 LR - 20161230 IS - 1601-0825 (Electronic) IS - 1354-523X (Linking) VI - 21 IP - 1 DP - 2015 Jan TI - IL-1beta-induced matrix metalloproteinase-3 regulates cell proliferation in rat dental pulp cells. PG - 97-105 LID - 10.1111/odi.12219 [doi] AB - OBJECTIVE: We previously reported that matrix metalloproteinase-3(MMP-3) accelerates wound healing following dental pulp injury. In this study, we tested the hypothesis that induction of MMP-3 activity by interleukin-1beta would promote proliferation and apoptosis of dental pulp cells. MATERIALS AND METHODS: Dental pulp cells were isolated from rat incisors and subjected to interleukin-1beta. Matrix metalloproteinase-3 mRNA and protein expression were assessed using reverse transcription-polymerase chain reaction and Western blotting, respectively. Matrix metalloproteinase-3 activity was measured using fluorescence. Dental pulp cell proliferation and apoptosis were determined using enzyme-linked immunosorbent assays (ELISA) for BrdU and DNA fragmentation, respectively. siRNA was used to reduce MMP-3 transcripts in these cells. RESULTS: Treatment with interleukin-1beta increased MMP-3 mRNA and protein levels as well as its activity in dental pulp cells. Cell proliferation was also markedly increased, with no changes in apoptosis observed. Treatment with siRNA against MMP-3 potently suppressed this interleukin-1beta-induced increase in MMP-3 expression and activity, and also suppressed cell proliferation but unexpectedly increased apoptosis in these cells (P < 0.05). This siRNA-mediated increase in apoptosis could be reversed with exogenous MMP-3 stimulation (P < 0.05). CONCLUSIONS: Interleukin-1beta induces MMP-3-regulated cell proliferation and suppresses apoptosis in dental pulp cells. CI - (c) 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Ozeki, N AU - Ozeki N AD - Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan. FAU - Yamaguchi, H AU - Yamaguchi H FAU - Hiyama, T AU - Hiyama T FAU - Kawai, R AU - Kawai R FAU - Nakata, K AU - Nakata K FAU - Mogi, M AU - Mogi M FAU - Nakamura, H AU - Nakamura H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131230 PL - Denmark TA - Oral Dis JT - Oral diseases JID - 9508565 RN - 0 (Interleukin-1beta) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) MH - Animals MH - Apoptosis/drug effects/physiology MH - Blotting, Western MH - Cell Proliferation/drug effects/*physiology MH - Dental Pulp/cytology/drug effects/*physiology MH - Interleukin-1beta/*pharmacology MH - Matrix Metalloproteinase 3/*physiology MH - Rats MH - Reverse Transcriptase Polymerase Chain Reaction OTO - NOTNLM OT - IL-1beta OT - cytokines OT - dental pulp cells OT - inflammation OT - matrix metalloproteinases EDAT- 2013/12/18 06:00 MHDA- 2016/11/08 06:00 CRDT- 2013/12/17 06:00 PHST- 2013/04/12 00:00 [received] PHST- 2013/11/12 00:00 [revised] PHST- 2013/12/08 00:00 [accepted] PHST- 2013/12/17 06:00 [entrez] PHST- 2013/12/18 06:00 [pubmed] PHST- 2016/11/08 06:00 [medline] AID - 10.1111/odi.12219 [doi] PST - ppublish SO - Oral Dis. 2015 Jan;21(1):97-105. doi: 10.1111/odi.12219. Epub 2013 Dec 30.