中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (21): 3363-3368.doi: 10.12307/2022.645

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

浓缩生长因子与生物陶瓷材料iRoot BP 体外对人牙髓细胞存活、 增殖和矿化的影响

严崎方,谢翠柳,鄢国伟   

  1. 西南医科大学口颌面修复重建与再生实验室,西南医科大学附属口腔医院牙体牙髓科,四川省泸州市  646000
  • 收稿日期:2021-05-20 接受日期:2021-07-10 出版日期:2022-07-28 发布日期:2022-01-27
  • 通讯作者: 鄢国伟,医师,西南医科大学口颌面修复重建与再生实验室,西南医科大学附属口腔医院牙体牙髓科,四川省泸州市 646000
  • 作者简介:严崎方,女,1992年生,四川省泸州市人,汉族,硕士,主要从事牙体牙髓及根尖周疾病研究。

Effect of concentrated growth factor and bioceramic material iRoot BP on survival, proliferation and mineralization of human dental pulp cells in vitro

Yan Qifang, Xie Cuiliu, Yan Guowei   

  1. Oral & Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of  Endodontics, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2021-05-20 Accepted:2021-07-10 Online:2022-07-28 Published:2022-01-27
  • Contact: Yan Guowei, Physician, Oral & Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Endodontics, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Yan Qifang, Master, Oral & Maxillofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Department of Endodontics, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China

摘要:

文题释义:
浓缩生长因子:为SACCO等通过自体外周血制备而成的新一代血小板浓缩制品,是一种富含高浓度生长因子、纤维蛋白及白细胞的自体生物活性材料,具有良好的生物相容性,能释放大量生物活性因子,在促进组织新生、再生及血管化、抗炎、抗感染等方面发挥着积极作用。 
iRoot BP:是一种能诱导骨组织再生、促进生物矿化和牙髓牙周组织再生的新型生物活性陶瓷材料,具有极高生物相容性、生物活性及优良的抗菌性能,具有可塑性均匀膏剂和预混合单一针管输送系统,被广泛应用于根尖外科倒充填、根尖诱导成形术、根吸收及根管侧穿修补等。

背景:浓缩生长因子富含多种高浓度生长因子,可以诱导牙髓细胞增殖,促进局部牙本质的修复。
目的:对比浓缩生长因子及生物陶瓷材料iRoot  BP在体外对人牙髓细胞存活、增殖及矿化的作用,进而评估浓缩生长因子用作直接盖髓材料的可行性。
方法:采集健康成年人外周血,离心提取浓缩生长因子。采用改良组织块酶消化法分离培养人牙髓细胞,分别采用浓缩生长因子膜片浸提液与iRoot  BP材料浸提液处理细胞,采用CCK-8法检测细胞增殖。将人牙髓细胞分别接种于浓缩生长因子膜片与iRoot  BP材料表面,检测细胞的碱性磷酸酶活性、细胞周期分布、细胞凋亡与成牙相关基因表达。
结果与结论:①CCK-8检测显示,浓缩生长因子膜片浸提液组处理1,3,7 d的细胞增殖快于iRoot  BP材料浸提液组(P < 0.05);②浓缩生长因子组处理3 d的细胞碱性磷酸酶活性高于iRoot  BP组(P < 0.05),两组处理1,7 d的碱性磷酸酶活性比较差异无显著性意义(P > 0.05);③浓缩生长因子组处理1,3,7 d的S期细胞百分比均高于iRoot  BP组(P < 0.05),处理1,3,7 d的细胞凋亡率均低于iRoot  BP组(P < 0.05);④处理第7天的qRT-PCR检测显示,浓缩生长因子组Runx2、碱性磷酸酶、牙本质涎磷蛋白、骨钙素mRNA水平均高于iRoot  BP组(P < 0.05);⑤结果表明,浓缩生长因子可促进人牙髓细胞的存活、增殖及矿化,有望作为直接盖髓材料。

https://orcid.org/0000-0002-4455-6727 (严崎方) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料口腔生物材料纳米材料缓释材料材料相容性;组织工程

关键词: 血小板, 浓缩生长因子, iRoot BP, 成牙分化, 直接盖髓, 牙髓细胞, 自体生物材料, 富血小板血浆

Abstract: BACKGROUND: Concentrated growth factors are rich in a variety of high-concentration growth factors, which can induce the proliferation of dental pulp cells and promote the repair of local dentin.
OBJECTIVE: To compare the effects of concentrated growth factor and bioceramic material iRoot BP on the survival, proliferation and mineralization of human dental pulp cells in vitro, and then evaluate the feasibility of concentrated growth factor as a direct pulp capping material. 
METHODS: The peripheral blood of healthy adults was collected and centrifuged to extract and concentrate growth factors. The modified tissue mass enzymatic digestion method was used to isolate and culture human dental pulp cells. The cells were treated with concentrated growth factor membrane extract and iRoot BP material extract. Cell proliferation was detected by the CCK8 assay. Human dental pulp cells were separately inoculated on the surface of the concentrated growth factor membrane and iRoot BP material to detect the alkaline phosphatase activity, cell cycle distribution, apoptosis and gene expression related to odontogenesis. 
RESULTS AND CONCLUSION: (1) CCK8 assay showed that cell proliferation of the concentrated growth factor patch extract group was faster than that of the iRoot BP material extract group for 1, 3, and 7 days (P < 0.05). (2) The alkaline phosphatase activity of the cells of the concentrated growth factor group treated for 3 days was higher than that of the iRoot BP group (P < 0.05), and there was no significant difference in alkaline phosphatase activity between the two treatments for 1 and 7 days (P > 0.05). (3) The percentage of S-phase cells in the concentrated growth factor group treated for 1, 3, and 7 days was higher than that in the iRoot BP group (P < 0.05), and the apoptosis rate of cells on days 1, 3, and 7 was lower than that in iRoot BP group (P < 0.05). (4) The qRT-PCR test on the 7th day of treatment showed that the mRNA levels of Runx2, alkaline phosphatase, dentin sialophosphoprotein and osteocalcin in the concentrated growth factor group were higher than those in the iRoot BP group (P < 0.05). (5) The results show that concentrated growth factors can promote the survival, proliferation and mineralization of human dental pulp cells, and it is expected to be used as a direct pulp capping material.

Key words: platelets, concentrated growth factors, iRoot BP, odontogenic differentiation, direct pulp capping, dental pulp cells, autologous biological materials, platelet-rich plasma

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