Genetics (Austin), 2019-06, Vol.212 (2), p.523-535
2019
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- Autor(en) / Beteiligte
- Titel
- The Role of Tissue Inhibitors of Metalloproteinases in Organ Development and Regulation of ADAMTS Family Metalloproteinases in Caenorhabditis elegans
- Ist Teil von
- Genetics (Austin), 2019-06, Vol.212 (2), p.523-535
- Ort / Verlag
- United States: Genetics Society of America
- Erscheinungsjahr
- 2019
- Quelle
- EZB-FREE-00999 freely available EZB journals
- Beschreibungen/Notizen
- Remodeling of the extracellular matrix supports tissue and organ development, by regulating cellular morphology and tissue integrity. However, proper extracellular matrix remodeling requires spatiotemporal regulation of extracellular metalloproteinase activity. Members of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) family, including MIG-17 and GON-1, are evolutionarily conserved, secreted, zinc-requiring metalloproteinases. Although these proteases are required for extracellular matrix remodeling during gonadogenesis in , their regulatory mechanisms remain to be delineated. Therefore, we focused on the tissue inhibitors of metalloproteinases (TIMPs), TIMP-1 and CRI-2 Analysis of the transcription and translation products for GFP/Venus fusions, with TIMP-1 or CRI-2, indicated that these inhibitors were secreted and localized to the basement membrane of gonads and the plasma membrane of germ cells. A deletion mutant exhibited gonadal growth defects and sterility, and the phenotypes of this mutant were fully rescued by a TIMP-1::Venus construct, but not by a TIMP-1(C21S)::Venus mutant construct, in which the inhibitor coding sequence had been mutated. Moreover, genetic data suggested that TIMP-1 negatively regulates proteolysis of the α1 chain of type IV collagen. We also found that the loss-of-function observed for the mutants and involves a partial suppression of gonadal defects found for the mutants and , and that this suppression was canceled upon overexpression of or , respectively. Based on these results, we propose that both TIMP-1 and CRI-2 act as inhibitors of MIG-17 and GON-1 ADAMTSs to regulate gonad development in a noncell-autonomous manner.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1943-2631, 0016-6731eISSN: 1943-2631DOI: 10.1534/genetics.119.301795Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_6553827
- Format
- –
- Schlagworte
- ADAM protein, Animals, Basement Membrane - metabolism, Caenorhabditis elegans, Caenorhabditis elegans - genetics, Caenorhabditis elegans - growth & development, Caenorhabditis elegans - metabolism, Caenorhabditis elegans Proteins - genetics, Caenorhabditis elegans Proteins - metabolism, Cell adhesion & migration, Cell Membrane - metabolism, Clonal deletion, Collagen, Collagen (type IV), Collagen Type IV - metabolism, Defects, Deletion mutant, Disintegrins - genetics, Disintegrins - metabolism, Extracellular matrix, Extracellular Matrix - metabolism, Genes, Genetics, Germ cells, Germ Cells - metabolism, Gonads, Gonads - growth & development, Gonads - metabolism, Inhibitors, Insects, Intercellular Signaling Peptides and Proteins - genetics, Intercellular Signaling Peptides and Proteins - metabolism, Investigations, Localization, Mammals, Metalloendopeptidases - genetics, Metalloendopeptidases - metabolism, Morphogenesis, Morphogenesis - genetics, Morphogenesis - physiology, Morphology, Mutants, Mutation, Nematodes, Phenotypes, Proteolysis, Regulatory mechanisms (biology), Sterility, Thrombospondin, Tissue inhibitor of metalloproteinase 1, Tissue Inhibitor of Metalloproteinase-1 - genetics, Tissue Inhibitor of Metalloproteinase-1 - metabolism, Tissue Inhibitor of Metalloproteinase-1 - physiology, Tissue Inhibitor of Metalloproteinases - genetics, Tissue Inhibitor of Metalloproteinases - metabolism, Tissues, Transcription, Worms, Zinc