title: Dual role of parathyroid hormone in endothelial progenitor cells and marrow stromal mesenchymal stem cells.
abstract: Hematopoietic stem cells derive regulatory information also from parathyroid hormone (PTH). To explore the possibility that PTH may have a role in regulation of other stem cells residing in bone marrow, such as mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs) we assessed the effect of this hormone on the in vitro behavior of MSCs and EPCs. We evidenced that MSCs were much more responsive to PTH than EPCs. PTH increased the proliferation rate of MSCs with a diminution of senescence and apoptosis. Taken together, our results may suggest a protective effect of PTH on MSCs that reduces stress phenomena and preserve genome integrity. At the opposite, PTH did not modify the fate of EPCs in culture.
authors.affiliation: Department of Experimental Medicine, Biotechnology and Molecular Biology Section, Second University of Naples, Naples, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Di Bernardo
authors.forename: Umberto
authors.initials: U
authors.lastname: Galderisi
authors.forename: Carmela
authors.initials: C
authors.lastname: Fiorito
authors.forename: Tiziana
authors.initials: T
authors.lastname: Squillaro
authors.forename: Letizia
authors.initials: L
authors.lastname: Cito
authors.forename: Marilena
authors.initials: M
authors.lastname: Cipollaro
authors.forename: Antonio
authors.initials: A
authors.lastname: Giordano
authors.forename: Claudio
authors.initials: C
authors.lastname: Napoli
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D017209:Apoptosis; D001854:Bone Marrow Cells / Q000378:metabolism* / Q000473:pathology; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D016922:Cellular Senescence; D004249:DNA Damage; D003849:Deoxyguanosine / Q000031:analogs & derivatives / Q000378:metabolism; D042783:Endothelial Cells / Q000378:metabolism* / Q000473:pathology; D005786:Gene Expression Regulation; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000378:metabolism* / Q000473:pathology; D010281:Parathyroid Hormone / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D018016:Receptors, Parathyroid Hormone / Q000378:metabolism; D016160:Retinoblastoma Protein / Q000378:metabolism; D013234:Stem Cells / Q000378:metabolism* / Q000473:pathology; D017154:Stromal Cells / Q000378:metabolism* / Q000473:pathology; D013997:Time Factors; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism
chemical_list: C470125:PTH protein, human; D010281:Parathyroid Hormone; D012333:RNA, Messenger; D018016:Receptors, Parathyroid Hormone; D016160:Retinoblastoma Protein; C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53; D000080242:8-Hydroxy-2'-Deoxyguanosine; D003849:Deoxyguanosine