Search results for "lysyl hydroxylase"

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Antibody-mediated blockade of JMJD6 interaction with collagen I exerts antifibrotic and antimetastatic activities

2017

JMJD6 is known to localize in the nucleus, exerting histone arginine demethylase and lysyl hydroxylase activities. A novel localization of JMJD6 in the extracellular matrix, resulting from its secretion as a soluble protein, was unveiled by a new anti-JMJD6 mAb called P4E11, which was developed to identify new targets in the stroma. Recombinant JMJD6 binds with collagen type I (Coll-I), and distinct JMJD6 peptides interfere with collagen fibrillogenesis, collagen-fibronectin interaction, and adhesion of human tumor cells to the collagen substrate. P4E11 and collagen binding to JMJD6 are mutually exclusive because the amino acid sequences of JMJD6 necessary for the interaction with Coll-I ar…

0301 basic medicineMonoclonal antibodyXenograft Model Antitumor AssayArginineLysyl hydroxylaseEnzyme-Linked Immunosorbent AssayReceptors Cell SurfacePlasma protein bindingBiochemistryCollagen Type IExtracellular matrix03 medical and health sciencesMiceFibrosisPeptide LibraryCell Line TumormedicineGeneticsAnimalsHumansOsteonectinCell NucleuMolecular BiologyCell NucleusMice KnockoutMice Inbred BALB CbiologyChemistryJmjC familyAnimalAntibodies MonoclonalFibrillogenesisExtracellular matrixmedicine.diseaseXenograft Model Antitumor AssaysImmunohistochemistryCell biologyIn vivo treatment030104 developmental biologybiology.proteinOsteonectinSignal transductionExtracellular matrix; In vivo treatment; JmjC family; Monoclonal antibody; Peptide library; Animals; Antibodies Monoclonal; Cell Line Tumor; Cell Nucleus; Collagen Type I; Enzyme-Linked Immunosorbent Assay; Extracellular Matrix; Humans; Immunohistochemistry; Mice; Mice Inbred BALB C; Mice Knockout; Osteonectin; Peptide Library; Protein Binding; Receptors Cell Surface; Signal Transduction; Xenograft Model Antitumor Assays; Biotechnology; Biochemistry; Molecular Biology; GeneticsHumanProtein BindingSignal TransductionBiotechnology
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The glycosyltransferase activities of lysyl hydroxylase 3 (LH3) in the extracellular space are important for cell growth and viability.

2008

Abstract Lysyl hydroxylase (LH) isoform 3 is a post-translational enzyme possessing LH, collagen galactosyltransferase (GT) and glucosyltransferase (GGT) activities. We have demonstrated that LH3 is found not only intracellularly, but also on the cell surface and in the extracellular space, suggesting additional functions for LH3. Here we show that the targeted disruption of LH3 by siRNA causes a marked reduction of both glycosyltransferase activities, and the overexpression of LH3 in HT-1080 cells increases hydroxylation of lysyl residues and the subsequent galactosylation and glucosylation of hydroxylysyl residues. These data confirm the multi-functionality of LH3 in cells. Furthermore, t…

DNA ComplementaryGlycosylationCell SurvivalLysyl hydroxylaseCellhydroxylysyl glycosylationFluorescent Antibody Techniquelysyl hydroxylaseMicrotubulesPermeabilityCell LineGlycosyltransferasemedicineExtracellularAnimalsHumanscell growthViability assayRNA Small InterferingCell Shapecell viabilityCell ProliferationbiologyCell DeathCell growthProcollagen-Lysine 2-Oxoglutarate 5-Dioxygenasecollagen biosynthesisGlycosyltransferasesCell BiologyArticlesGalactosyltransferasesMolecular biologyPeptide FragmentsCulture MediaActin Cytoskeletonmedicine.anatomical_structurepost-translational modificationCell culturebiology.proteinMolecular MedicineGlucosyltransferaseExtracellular Spacehydroxylysyl glycosyltransferaseJournal of cellular and molecular medicine
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