PMID- 2848449 OWN - NLM STAT- MEDLINE DCOM- 19890104 LR - 20190628 IS - 0003-9861 (Print) IS - 0003-9861 (Linking) VI - 267 IP - 1 DP - 1988 Nov 15 TI - Evidence that human rheumatoid synovial matrix metalloproteinase 3 is an endogenous activator of procollagenase. PG - 211-6 AB - The treatment of crude culture medium from human rheumatoid synovial cells with 4-aminophenylmercuric acetate (APMA) or trypsin results in the activation of procollagenase. This process was shown to be dependent on the presence of matrix metalloproteinase 3 (MMP-3). MMP-3 can directly activate procollagenase without changing the apparent molecular weight of procollagenase. This activity was accelerated in the presence of APMA. We propose that MMP-3 plays an important role in connective tissue destruction through the activation of procollagenase in addition to its direct action on components of the extracellular matrix. FAU - Ito, A AU - Ito A AD - Department of Biochemistry, University of Kansas Medical Center, Kansas City 66103. FAU - Nagase, H AU - Nagase H LA - eng GR - AR 39189/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Arch Biochem Biophys JT - Archives of biochemistry and biophysics JID - 0372430 RN - 0 (Enzyme Precursors) RN - 6283-24-5 (4-aminophenylmercuriacetate) RN - EC 3.4.21.4 (Trypsin) RN - EC 3.4.24.- (Collagenases) RN - EC 3.4.24.- (Metalloendopeptidases) RN - EC 3.4.24.- (procollagenase) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.3 (Microbial Collagenase) RN - OSX88361UX (Phenylmercuric Acetate) SB - IM MH - Arthritis, Rheumatoid/*enzymology MH - Cells, Cultured MH - *Collagenases MH - Enzyme Activation/drug effects MH - Enzyme Precursors/*metabolism MH - Humans MH - Matrix Metalloproteinase 3 MH - Metalloendopeptidases/*metabolism MH - Microbial Collagenase/*metabolism MH - Molecular Weight MH - Phenylmercuric Acetate/analogs & derivatives/pharmacology MH - Synovial Membrane/*enzymology MH - Trypsin/pharmacology EDAT- 1988/11/15 00:00 MHDA- 1988/11/15 00:01 CRDT- 1988/11/15 00:00 PHST- 1988/11/15 00:00 [pubmed] PHST- 1988/11/15 00:01 [medline] PHST- 1988/11/15 00:00 [entrez] AID - 0003-9861(88)90025-2 [pii] AID - 10.1016/0003-9861(88)90025-2 [doi] PST - ppublish SO - Arch Biochem Biophys. 1988 Nov 15;267(1):211-6. doi: 10.1016/0003-9861(88)90025-2.