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To receive news and publication updates for Stem Cells International, enter your email address in the box below. Correspondence should be addressed to Xinquan Jiang ; moc. This is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Regenerative medicine for bone tissue mainly depends on efficient recruitment of endogenous or transplanted stem cells to guide bone regeneration.

B ys the time to bone bb growth factor PDGF is a functional factor that has been widely used in tissue regeneration and repair. However, the short half-life of PDGF limits its efficacy, and the mechanism by which PDGF regulates stem cell-based bone regeneration still needs to be elucidated. Reconstruction of bony defects caused by infection, trauma, or tumor resection is still a substantial clinical challenge. Bone marrow stromal cells BMSCs possessing regenerative potential have been considered an ideal cell source for bone regeneration [ 12 ].

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In addition, the combination of BMSCs with particular growth factors, such as bone morphogenetic proteins BMPs and vascular endothelial growth factor VEGFhas been considered a promising strategy for bone tissue regeneration [ 3 ]. Platelet-derived growth factor PDGFa two-chain polypeptide, was originally identified in platelets [ 45 ], and there are five polypeptide isoforms: PDGF-BB is a potent mitogen [ 78 ] and chemoattractant for many cell types [ 910 ] and has the ability to promote angiogenesis [ 11 ].

However, the mechanisms by which PDGF-BB contributes to stem cell-based bone regeneration still need to be further elucidated. In addition, the short half-life of PDGF within the blood only a few minutes limits its efficacy [ 15 ].

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In this system, lentiviral transduction would enable stable and efficient expression of the transgene in cells even after several passages, which can facilitate both in vitro and in vivo investigations of the mechanism underlying PDGF-BB regulation of stem cell-based bone regeneration. Bone regeneration was evaluated using micro-CT and histological analysis.

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