| Proteolytic activation of single-chain precursor macrophage-stimulating protein by nerve growth factor-gamma and epidermal growth factor-binding protein, members of the kallikrein family. | |
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MedLine Citation:
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PMID: 8188657 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Promacrophage-stimulating protein (MSP) is an 80-kDa protein that acquires biological activity after cleavage at an Arg-Val bond to a disulfide-linked alpha beta heterodimer by serine proteases of the intrinsic coagulation cascade. These proteases, which include serum kallikrein, factor XIIa and factor XIa, are members of the trypsin family of serine proteases. We now report that two other members of the family, nerve growth factor-gamma (NGF-gamma) and epidermal growth factor-binding protein (EGF-BP), cleave and activate pro-MSP to the disulfide-linked alpha beta heterodimer. Cleavage of 1.5 nM pro-MSP by 1 nM NGF-gamma or EGF-BP at 37 degrees C was almost complete within 30 min. These concentrations of enzyme are about 2 orders of magnitude less than is required for cleavage by serum kallikrein or factor XIIa. Cleavage of pro-MSP to MSP was associated with a conformational change in the protein, because the cleaved product, but not pro-MSP, was detected by a sandwich enzyme-linked immunoassay. Cleavage caused the appearance of biological activity, as measured by chemotactic activity of MSP for resident peritoneal macrophages, by MSP-induced macrophage shape change, and by stimulation of macrophage ingestion of C3bi-coated erythrocytes. These findings suggest the possibility of cooperative interactions between NGF-gamma or EGF-BP and pro-MSP in inflammation and wound healing. |
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Authors:
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M H Wang; S L Gonias; A Skeel; B B Wolf; T Yoshimura; E J Leonard |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of biological chemistry Volume: 269 ISSN: 0021-9258 ISO Abbreviation: J. Biol. Chem. Publication Date: 1994 May |
Date Detail:
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Created Date: 1994-06-22 Completed Date: 1994-06-22 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 2985121R Medline TA: J Biol Chem Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 13806-10 Citation Subset: IM |
Affiliation:
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Immunopathology Section, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals CHO Cells Cricetinae Endopeptidases / metabolism* Growth Substances / genetics, metabolism* Hepatocyte Growth Factor* Humans Hydrolysis Kallikreins / genetics, metabolism* Nerve Growth Factors / metabolism* Protein Precursors / genetics, metabolism* Proto-Oncogene Proteins* Serine Endopeptidases / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Growth Substances; 0/Nerve Growth Factors; 0/Protein Precursors; 0/Proto-Oncogene Proteins; 0/macrophage stimulating protein; 67256-21-7/Hepatocyte Growth Factor; EC 3.4.-/Endopeptidases; EC 3.4.21.-/Kallikreins; EC 3.4.21.-/Serine Endopeptidases; EC 3.4.21.-/nerve growth factor, gamma |
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