Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/57249
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dc.contributor.authorGronthos, S.en
dc.contributor.authorMcCarty, R.en
dc.contributor.authorMrozik, K.en
dc.contributor.authorFitter, S.en
dc.contributor.authorPaton, S.en
dc.contributor.authorMenicanin, D.en
dc.contributor.authorItescu, S.en
dc.contributor.authorBartold, P.en
dc.contributor.authorXian, C.en
dc.contributor.authorZannettino, A.en
dc.date.issued2009en
dc.identifier.citationStem Cells and Development, 2009; 18(9):1253-1261en
dc.identifier.issn1547-3287en
dc.identifier.issn1557-8534en
dc.identifier.urihttp://hdl.handle.net/2440/57249-
dc.description.abstractMesenchymal stromal cells (MSCs) and their precursor cells (MPCs) can proliferate and differentiate into multiple mesodermal and some ectodermal and endodermal tissues. Culture-expanded MSCs are currently being evaluated as a possible cell therapy to replace/repair injured or diseased tissues. While a number of mAb reagents with specificity to human MSCs, including STRO-1, STRO-3 (BLK ALP), CD71 (SH2, SH3), CD106 (VCAM-1), CD166, and CD271, have facilitated the isolation of purified populations of human MSCs from primary tissues, few if any mAb reagents have been described that can be used to isolate equivalent cells from other species. This is of particular relevance when assessing the tissue regenerative efficacy of MSCs in large immunocompetent, preclinical animal models of disease. In light of this, we sought to generate novel monoclonal antibodies (mAb) with specific reactivity against a cell surface molecule that is expressed at high levels by MSCs from different species. Using CD106 (VCAM-1)-selected ovine MSCs as an immunogen, mAb-producing hybridomas were selected for their reactivity to both human and ovine MSCs. One such hybridoma, termed STRO-4, produced an IgG mAb that reacted with <5% of human and ovine bone marrow (BM) mononuclear cells. As a single selection reagent, STRO-4 mAb was able to enrich colony-forming fibroblasts (CFU-F) in both human and ovine BM by 16- and 8-folds, respectively. Cells isolated with STRO-4 exhibited reactivity with markers commonly associated with MSCs isolated by plastic adherence including CD29, CD44, and CD166. Moreover, when placed in inductive culture conditions in vitro, STRO-4+ MSCs exhibited multilineage differentiation potential and were capable of forming a mineralized matrix, lipid-filled adipocytes, and chondrocytes capable of forming a glycosaminoglycan-rich matrix. Biochemical analysis revealed that STRO-4 identified the beta isoform of heat shock protein-90 (Hsp90β). In addition to identifying an antibody reagent that identifies a highly conserved epitope expressed by MSCs from different species, our study also points to a potential role for Hsp90β in MSC biology.en
dc.description.statementofresponsibilityStan Gronthos, Rosa McCarty, Krzysztof Mrozik, Stephen Fitter, Sharon Paton, Danijela Menicanin, Silviu Itescu, P. Mark Bartold, Cory Xian and Andrew C.W. Zannettinoen
dc.language.isoenen
dc.publisherMary Ann Liebert Inc Publen
dc.subjectLeukocytes, Mononuclear; Bone Marrow Cells; Cell Membrane; Adipocytes; Chondrocytes; Multipotent Stem Cells; Animals; Mice, Inbred BALB C; Sheep; Humans; Mice; Biological Markers; Antibodies, Monoclonal; Immunoblotting; Flow Cytometry; Cell Differentiation; Antibody Specificity; HSP90 Heat-Shock Proteins; Adult Stem Cells; Mesenchymal Stromal Cellsen
dc.titleHeat shock protein-90 beta is expressed at the surface of multipotential mesenchymal precursor cells: Generation of a novel monoclonal antibody, STRO-4, with specificity for mesenchymal precursor cells from human and ovine tissuesen
dc.typeJournal articleen
dc.identifier.rmid0020093402en
dc.identifier.doi10.1089/scd.2008.0400en
dc.identifier.pubid37049-
pubs.library.collectionMedicine publicationsen
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidGronthos, S. [0000-0002-6225-3084]en
dc.identifier.orcidMrozik, K. [0000-0002-4890-8208]en
dc.identifier.orcidFitter, S. [0000-0003-1663-6807]en
dc.identifier.orcidPaton, S. [0000-0001-7031-3510]en
dc.identifier.orcidMenicanin, D. [0000-0002-1178-2293]en
dc.identifier.orcidBartold, P. [0000-0002-5695-3877]en
dc.identifier.orcidXian, C. [0000-0002-8467-2845]en
dc.identifier.orcidZannettino, A. [0000-0002-6646-6167]en
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