PMID- 21688302 OWN - NLM STAT- MEDLINE DCOM- 20120224 LR - 20211020 IS - 1097-4644 (Electronic) IS - 0730-2312 (Print) IS - 0730-2312 (Linking) VI - 112 IP - 11 DP - 2011 Nov TI - Proteolysis of the matricellular protein hevin by matrix metalloproteinase-3 produces a SPARC-like fragment (SLF) associated with neovasculature in a murine glioma model. PG - 3093-102 LID - 10.1002/jcb.23235 [doi] AB - The matricellular SPARC-family member hevin (Sparc-like 1/SPARCL-1/SC1/Mast9) contributes to neural development and alters tumor progression in a range of mammalian models. Based on sequence similarity, we hypothesized that proteolytic digestion of hevin would result in SPARC-like fragments (SLF) that affect the activity and/or location of these proteins. Incubation of hevin with matrix metalloproteinase-3 (MMP-3), a protease known to cleave SPARC, produced a limited number of peptides. Sequencing revealed the major proteolytic products to be SPARC-like in primary structure. In gliomas implanted into murine brain, a SLF was associated with SPARC in the neovasculature but not with hevin, the latter prominent in the astrocytes encompassed by infiltrating tumor. In this model of invasive glioma that involves MMP-3 activity, host-derived SLF was not observed in the extracellular matrix adjacent to tumor cells. In contrast, it occurred with its homolog SPARC in the angiogenic response to the tumor. We conclude that MMP-3-derived SLF is a marker of neovessels in glioma, where it could influence the activity of SPARC. CI - Copyright (c) 2011 Wiley Periodicals, Inc. FAU - Weaver, Matt AU - Weaver M AD - Benaroya Research Institute, 1201 Ninth Avenue, Seattle, Washington 98101, USA. FAU - Workman, Gail AU - Workman G FAU - Schultz, Chad R AU - Schultz CR FAU - Lemke, Nancy AU - Lemke N FAU - Rempel, Sandra A AU - Rempel SA FAU - Sage, E Helene AU - Sage EH LA - eng GR - R01 GM040711-22/GM/NIGMS NIH HHS/United States GR - R01 GM040711/GM/NIGMS NIH HHS/United States GR - CA86997/CA/NCI NIH HHS/United States GR - R01 CA086997/CA/NCI NIH HHS/United States GR - GM40711/GM/NIGMS NIH HHS/United States GR - R01 CA086997-07/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - J Cell Biochem JT - Journal of cellular biochemistry JID - 8205768 RN - 0 (Calcium-Binding Proteins) RN - 0 (Extracellular Matrix Proteins) RN - 0 (Osteonectin) RN - 0 (Sparcl1 protein, mouse) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Amino Acid Sequence MH - Animals MH - Brain Neoplasms/blood supply/enzymology/*metabolism MH - CHO Cells MH - Calcium-Binding Proteins/*metabolism MH - Cell Line, Tumor MH - Cricetinae MH - Cricetulus MH - Disease Models, Animal MH - Extracellular Matrix Proteins/*metabolism MH - Glioma/blood supply/enzymology/*metabolism MH - Humans MH - Immunohistochemistry MH - Matrix Metalloproteinase 3/chemistry/*metabolism MH - Mice MH - Molecular Sequence Data MH - *Neovascularization, Pathologic MH - Osteonectin/*metabolism MH - Proteolysis MH - Transplantation, Heterologous PMC - PMC3188378 MID - NIHMS305974 EDAT- 2011/06/21 06:00 MHDA- 2012/03/01 06:00 PMCR- 2012/11/01 CRDT- 2011/06/21 06:00 PHST- 2011/06/21 06:00 [entrez] PHST- 2011/06/21 06:00 [pubmed] PHST- 2012/03/01 06:00 [medline] PHST- 2012/11/01 00:00 [pmc-release] AID - 10.1002/jcb.23235 [doi] PST - ppublish SO - J Cell Biochem. 2011 Nov;112(11):3093-102. doi: 10.1002/jcb.23235.