title: Ex vivo expansion of bone marrow stromal cells by platelet-rich plasma: a promising strategy in maxillo-facial surgery.
abstract: The aim of our study is to evaluate in vitro the response of bone marrow stromal cells (BMSCs) to platelet-rich plasma (PRP), in order to clarify the potential role of their combined use in a preclinical phase preceding BMSCs transplantation for bone repair and regeneration procedures. The incubation of BMSCs with PRP promoted a remarkable, dose- and time- dependent, growth stimulation, that was paralleled to a strong increase in the quantity of type I collagen and to a significant decrease in the activity of the early osteoblastic differentiation marker, alkaline phosphatase (AP). Once PRP was removed and osteogenic inducers were added, AP returned to levels comparable to the control, while the late phenotypic markers, osteocalcin and matrix calcification, were enhanced to higher levels than in controls. Our data demonstrate that PRP induces a remarkable ex vivo enrichment of BMSCs maintaining their differentiative potential. Thus PRP represents a valid preclinical tool for obtaining an effective, rapid and safe ex vivo expansion of BMSCs prior to their clinical utilization in bone engineering.
authors.affiliation: Department of Biochemistry and Biophysics F. Cedrangolo, Faculty of Medicine, Second University of Naples, Naples Italy. adriana.oliva@unina2.it
authors.forename: A
authors.initials: A
authors.lastname: Oliva
authors.forename: I
authors.initials: I
authors.lastname: Passaro
authors.forename: R
authors.initials: R
authors.lastname: Di Pasquale
authors.forename: A
authors.initials: A
authors.lastname: Di Feo
authors.forename: M
authors.initials: M
authors.lastname: Criscuolo
authors.forename: V
authors.initials: V
authors.lastname: Zappia
authors.forename: F
authors.initials: F
authors.lastname: Della Ragione
authors.forename: S
authors.initials: S
authors.lastname: D'Amato
authors.forename: M
authors.initials: M
authors.lastname: Annunziata
authors.forename: L
authors.initials: L
authors.lastname: Guida
mesh_terms: D001854:Bone Marrow Cells / Q000502:physiology*; D001861:Bone Regeneration; D002454:Cell Differentiation; D049109:Cell Proliferation; D006801:Humans; D010006:Osteoblasts / Q000166:cytology; D053657:Platelet-Rich Plasma / Q000502:physiology*; D017154:Stromal Cells / Q000502:physiology*; D013515:Surgery, Oral / Q000379:methods*