Xenogeneic bone filling materials modulate mesenchymal stem cell recruitment: role of the Complement C5a
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When bone filling materials are applied onto the periodontal tissues in vivo, they interact with the injured periodontal ligament (PDL) tissue and modulate its activity. This may lead to mesenchymal stem cells (MSCs) recruitment from bone marrow and initiate bone regeneration. Our hypothesis is that the filling materials affect PDL cells and MSCs functional activities by modulating PDL C5a secretion and subsequent MSCs proliferation and recruitment.
Materials and methods
Materials’ extracts were prepared from 3 bone-grafting materials: Gen-Os® of equine and porcine origins and bovine Bio-Oss®. Expression and secretion of C5a protein by injured PDL cells were investigated by RT-PCR and ELISA. MSCs proliferation was analyzed by MTT assay. C5a binding to MSCs C5aR and its phosphorylation was studied by ELISA. C5a implication in MSCs recruitment toward injured PDL cells was investigated using Boyden chambers.
MSCs proliferation significantly increased with Gen-Os® materials but significantly decreased with Bio-Oss®. C5a secretion slightly increased with Bio-Oss® while its level doubled with Gen-Os® materials. C5a fixation on MSCs C5aR and its phosphorylation significantly increased with Gen-Os® materials but not with Bio-Oss®. MSCs recruitment toward injured PDL cells increased with the three materials but was significantly higher with Gen-Os® materials than with Bio-Oss®. Adding C5a antagonist inhibited MSCs recruitment demonstrating a C5a-mediated migration.
Injured PDL cells secrete C5a leading MSCs proliferation and recruitment to the PDL injured cells. Gen-Os® materials enhanced both C5a secretion by injured PDL cells and MSCs recruitment. Bio-Oss® inhibited MSCs and was less efficient than Gen-Os® materials in inducing MSCs recruitment.
Within the limits of this study in vitro, Gen-Os® filling materials have a higher potential than Bio-Oss® on MSCs proliferation and C5a-dependent recruitment to the PDL injury site and the subsequent bone regeneration.
KeywordsXenogenic bone filling material Bone regeneration Complement C5a Stem cell recruitment
The authors thank Dr. Jean-Charles GARDON for providing the teeth.
The work was supported by Aix-Marseille University and CNRS.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
For this type of study, formal consent is not required.
- 6.Giuliani A, Iezzi G, Mazzoni S, Piattelli A, Perrotti V, Barone A (2018) Regenerative properties of collagenated porcine bone grafts in human maxilla: demonstrative study of the kinetics by synchrotron radiation microtomography and light microscopy. Clin Oral Investig 22:505–513. https://doi.org/10.1007/s00784-017-2139-6 CrossRefPubMedGoogle Scholar
- 30.Zimmermann CE, Gierloff M, Hedderich J, Açil Y, Wiltfang J, Terheyden H (2011) Biocompatibility of bone graft substitutes: effects on survival and proliferation of porcine multilineage stem cells in vitro. Folia Morphol (Warsz) 70:154–160Google Scholar
- 32.Figueiredo M, Henriques J, Martins G et al (2010) Physicochemical characterization of biomaterials commonly used in dentistry as bone substitutes-comparison with human bone: biomaterials in dentistry as bone substitutes. J Biomed Mater Res 92B:409–419. https://doi.org/10.1002/jbm.b.31529 CrossRefGoogle Scholar
- 33.Barone A, Nannmark U (2014) Bone, biomaterials & beyond. Edra Masson. p 200Google Scholar
- 36.Ignatius A, Schoengraf P, Kreja L, Liedert A, Recknagel S, Kandert S, Brenner RE, Schneider M, Lambris JD, Huber-Lang M (2011) Complement C3a and C5a modulate osteoclast formation and inflammatory response of osteoblasts in synergism with IL-1β. J Cell Biochem 112:2594–2605. https://doi.org/10.1002/jcb.23186 CrossRefPubMedPubMedCentralGoogle Scholar