Stomatology ›› 2024, Vol. 44 ›› Issue (7): 494-499.doi: 10.13591/j.cnki.kqyx.2024.07.003

• Basic and Clinical Research • Previous Articles     Next Articles

Effects of quercetin loaded gelatin microspheres on proliferation and differentiation of MC3T3-E1

DONG Weijie1,SU Tingshu2,XIN Xianzhen2()   

  1. Department of Stomatology, Jiaxing First Hospital, Jiaxing 314000, China
  • Received:2023-11-09 Online:2024-07-28 Published:2024-07-15

Abstract:

Objective This study prepared gelatin three-dimensional porous microspheres and investigated the feasibility of gelatin three-dimensional porous microspheres loaded with quercetin (G-quercetin) as bone tissue scaffold material. Methods Porous gelatin microspheres were prepared by emulsification and loaded with quercetin by lyophilization. Scanning electron microscopy was used to observe morphology of the microspheres. The cytotoxicity of G-quercetin microspheres and their effects on the adhesion, proliferation and differentiation of mouse embryonic osteoblast precursor cells (MC3T3-E1) were detected by immunofluorescence staining, live/dead cell staining and CCK-8 assay, alkaline phosphatase (ALP) staining and alizarin red staining. RT-PCR was used to detect the transcriptional levels of osteoblast-related cytokines such as Runx-2, ALP, OPN and OCN. Results The scanning electron microscopy results showed that the prepared three-dimensional microporous material loaded with quercetin gelatin had a porous structure. Cell adhesion showed that the cells could spread well on the surface of the microspheres. Compared with the control group, the results of live/dead cell staining and CCK-8 detection showed that the microspheres had no significant cytotoxicity (P>0.05). Compared with the control group, G-quercetin microspheres showed an increase in ALP expression and mineralization in vitro. PCR results also showed a significant increase in Runx-2, ALP, OCN, OPN (P<0.05). Conclusion The G-quercetin porous microspheres prepared in this experiment have good biocompatibility and can promote the osteogenic differentiation of MC3T3-E1 in vitro. It is expected to be used as a new scaffold material for bone tissue engineering.

Key words: gelatin, quercetin, microspheres, osteogenic differentiation, bone tissue engineering, mouse embryonic osteoblast precursor cells (MC3T3-E1)

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