PMID- 30850859 OWN - NLM STAT- MEDLINE DCOM- 20200106 LR - 20200305 IS - 1436-3771 (Electronic) IS - 1432-6981 (Linking) VI - 23 IP - 11 DP - 2019 Nov TI - The interactions of dendritic cells with osteoblasts on titanium surfaces: an in vitro investigation. PG - 4133-4143 LID - 10.1007/s00784-019-02852-w [doi] AB - OBJECTIVES: Osteoimmune interactions possess a critical part in the integration of materials and hosts. Dendritic cells (DCs) are the most common members of osteoimmune cells family. The titanium surfaces of dental implants tend to promote a mature dendritic cell phenotype with increased proinflammatory secretion. However, very little is known to the effects of this microenvironment on the behaviors of cells around implants, especially osteoblasts, and how the tissue integrations take place on such biomaterial surfaces. Therefore, the present study was to investigate the interactions of DCs with osteoblasts on titanium surfaces. DCs seeded on PT and SLA titanium surfaces were compared by assays for the proliferations, surface markers, and inflammatory genes expressions. MATERIALS AND METHODS: DCs seeded on PT and SLA titanium surfaces were compared by assays for the proliferations, surface markers, and inflammatory genes expressions. Next, we harvested the dendritic cell-conditioned medium (CM) and investigated the effects of CM on MC3T3-E1. RESULTS: The results showed an increase in CD86 and proinflammatory expressions of DCs seeded on PT and SLA surfaces, as well as a decrease in anti-inflammatory cytokines. The CM from titanium surfaces inhibited the osteoblast differentiation with reduced expression of osteogenic genes RUNX2, COL1, ALP, and OCN and decreased ALP activity as well as Alizarin red staining. CONCLUSION: These findings suggested that titanium surfaces switch DCs toward maturation phenotypes and thus inhibit the differentiation and mineralization of osteoblasts. CLINICAL RELEVANCE: Knowing the significant impact of immune cells on osteogenesis behaviors, some efforts to decrease the immune reaction might be of clinical significance. Favorable immune environments can increase the dental implants survival rate in patients. FAU - Yang, Yang AU - Yang Y AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China. AD - Department of Oral Implantology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, 510055, Guangzhou, People's Republic of China. FAU - Wang, Xuzhu AU - Wang X AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China. FAU - Miron, Richard J AU - Miron RJ AD - Department of Periodontology, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, 33328, USA. FAU - Zhang, Xiaoxin AU - Zhang X AUID- ORCID: 0000-0002-6899-924X AD - The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China. zhangxiaoxin@whu.edu.cn. LA - eng GR - 81600906/National Natural Science Foundation of China/ PT - Journal Article DEP - 20190309 PL - Germany TA - Clin Oral Investig JT - Clinical oral investigations JID - 9707115 RN - D1JT611TNE (Titanium) MH - Cell Differentiation MH - Cell Proliferation MH - *Dendritic Cells MH - Humans MH - *Osteoblasts MH - *Osteogenesis MH - Surface Properties MH - *Titanium OTO - NOTNLM OT - Dendritic cell OT - Immune response OT - Osteogenesis OT - Titanium surface EDAT- 2019/03/10 06:00 MHDA- 2020/01/07 06:00 CRDT- 2019/03/10 06:00 PHST- 2018/09/18 00:00 [received] PHST- 2019/02/13 00:00 [accepted] PHST- 2019/03/10 06:00 [pubmed] PHST- 2020/01/07 06:00 [medline] PHST- 2019/03/10 06:00 [entrez] AID - 10.1007/s00784-019-02852-w [pii] AID - 10.1007/s00784-019-02852-w [doi] PST - ppublish SO - Clin Oral Investig. 2019 Nov;23(11):4133-4143. doi: 10.1007/s00784-019-02852-w. Epub 2019 Mar 9.