title: The Protein Content of Extracellular Vesicles Derived from Expanded Human Umbilical Cord Blood-Derived CD133+and Human Bone Marrow-Derived Mesenchymal Stem Cells Partially Explains Why both Sources are Advantageous for Regenerative Medicine.
abstract: Adult stem cells have beneficial effects when exposed to damaged tissue due, at least in part, to their paracrine activity, which includes soluble factors and extracellular vesicles (EVs). Given the multiplicity of signals carried by these vesicles through the horizontal transfer of functional molecules, human mesenchymal stem cell (hMSCs) and CD133+cell-derived EVs have been tested in various disease models and shown to recover damaged tissues. In this study, we profiled the protein content of EVs derived from expanded human CD133+cells and bone marrow-derived hMSCs with the intention of better understanding the functions performed by these vesicles/cells and delineating the most appropriate use of each EV in future therapeutic procedures. Using LC-MS/MS analysis, we identified 623 proteins for expanded CD133+-EVs and 797 proteins for hMSCs-EVs. Although the EVs from both origins were qualitatively similar, when protein abundance was considered, hMSCs-EVs and CD133+-EVs were different. Gene Ontology (GO) enrichment analysis in CD133+-EVs revealed proteins involved in a variety of angiogenesis-related functions as well proteins related to the cytoskeleton and highly implicated in cell motility and cellular activation. In contrast, when overrepresented proteins in hMSCs-EVs were analyzed, a GO cluster of immune response-related genes involved with immune response-regulating factors acting on phagocytosis and innate immunity was identified. Together our data demonstrate that from the point of view of protein content, expanded CD133+-EVs and hMSCs-EVs are in part similar but also sufficiently different to reflect the main beneficial paracrine effects widely reported in pre-clinical studies using expanded CD133+cells and/or hBM-MSCs.
authors.affiliation: Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
authors.forename: Addeli B B
authors.initials: AB
authors.lastname: Angulski
authors.affiliation: Núcleo de Tecnologia Celular, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil.
authors.forename: Luiz G
authors.initials: LG
authors.lastname: Capriglione
authors.affiliation: Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
authors.forename: Michel
authors.initials: M
authors.lastname: Batista
authors.affiliation: Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
authors.forename: Bruna H
authors.initials: BH
authors.lastname: Marcon
authors.affiliation: Núcleo de Tecnologia Celular, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil.
authors.forename: Alexandra C
authors.initials: AC
authors.lastname: Senegaglia
authors.affiliation: Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil. mstimamiglio@fiocruz.br.
authors.forename: Marco A
authors.initials: MA
authors.lastname: Stimamiglio
authors.affiliation: Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil. alejandrocorrea@fiocruz.br.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Correa
mesh_terms: D000071916:AC133 Antigen / Q000097:blood; D017209:Apoptosis; D001854:Bone Marrow Cells / Q000166:cytology / Q000378:metabolism; D049109:Cell Proliferation; D002478:Cells, Cultured; D002853:Chromatography, Liquid; D055354:Exosomes / Q000378:metabolism / Q000648:ultrastructure; D000067128:Extracellular Vesicles / Q000378:metabolism* / Q000648:ultrastructure; D005312:Fetal Blood / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D046529:Microscopy, Electron, Transmission; D009336:Necrosis; D020543:Proteome / Q000378:metabolism*; D040901:Proteomics / Q000379:methods; D044968:Regenerative Medicine / Q000379:methods*; D053719:Tandem Mass Spectrometry
chemical_list: D000071916:AC133 Antigen; D020543:Proteome
keywords: Expanded CD133+ cells; Extracellular vesicles; Human bone marrow-derived mesenchymal stem cells; Paracrine activity; Protein content