中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (11): 2210-2217.doi: 10.12307/2025.352

• 骨组织构建 bone tissue construction • 上一篇    下一篇

乳酸干预破骨细胞条件培养基促进内皮细胞血管的生成

黄宏莉1,2,聂  闻1,2,麦昱颖1,2,覃  媛1,2,廖红兵1,2   

  1. 1广西医科大学口腔医学院/附属口腔医院口腔修复科,广西壮族自治区南宁市  530021;2广西口腔颌面修复与重建研究重点实验室,广西壮族自治区南宁市  530021
  • 收稿日期:2024-03-11 接受日期:2024-05-09 出版日期:2025-04-18 发布日期:2024-08-10
  • 通讯作者: 廖红兵,博士,教授,广西医科大学口腔医学院/附属口腔医院口腔修复科,广西壮族自治区南宁市 530021;广西口腔颌面修复与重建研究重点实验室,广西壮族自治区南宁市 530021
  • 作者简介:黄宏莉,女,1998年生,广西壮族自治区北海市人,汉族,广西医科大学在读硕士,主要从事骨替代材料与组织工程学研究。
  • 基金资助:
    国家自然科学基金资助项目(82160192),项目负责人:廖红兵

Conditioned medium of osteoclasts promotes angiogenesis in endothelial cells after lactic acid intervention

Huang Hongli1, 2, Nie Wen1, 2, Mai Yuying1, 2, Qin Yuan1, 2, Liao Hongbing1, 2   

  1. 1Department of Prosthodontics, College and Hospital of Stomatology, Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China; 2Guangxi Key Laboratory of Oral and Maxillofacial Restoration and Reconstruction, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Received:2024-03-11 Accepted:2024-05-09 Online:2025-04-18 Published:2024-08-10
  • Contact: Liao Hongbing, MD, Professor, Department of Prosthodontics, College and Hospital of Stomatology, Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China; Guangxi Key Laboratory of Oral and Maxillofacial Restoration and Reconstruction, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • About author:Huang Hongli, Master candidate, Department of Prosthodontics, College and Hospital of Stomatology, Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China; Guangxi Key Laboratory of Oral and Maxillofacial Restoration and Reconstruction, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 82160192 (to LHB)

摘要:


文题释义:
血管生成:从已有血管结构基础上延伸形成新血管的过程。在骨再生等组织修复过程中,血管生成是损伤部位产生新生血管以支持细胞所需营养物质和氧气的最有效、最快捷方式,促进骨组织血管生成可加速骨缺损修复和改建。
条件培养基:将培养过细胞的培养基除细胞取其上清液,直接用于培养其他细胞或作为其他细胞培养基的添加成分的方法。条件培养基中含有细胞生长所需的活性物质,包括细胞因子、趋化因子、生长因子和胞外囊泡等,其组成受细胞培养微环境中各种因素的影响,包括细胞接触抑制、细胞生长和分化能力以及理化参数等。

背景:聚乳酸作为可降解的骨组织工程支架材料被广泛用于组织再生与修复研究,在促进组织愈合与新骨形成、血管生成中具有重要作用。
目的:观察聚乳酸降解终产物乳酸对破骨细胞的作用,以及乳酸干预后破骨细胞条件培养基对血管内皮细胞增殖、迁移和小管形成功能的影响。
方法:①取对数生长期的小鼠单核巨噬细胞系RAW264.7,贴壁后分别加入含0,5,10,20 mmol/L乳酸的破骨诱导培养基(含核因子κB受体活化因子配体、体积分数10%胎牛血清的DMEM培养基),培养5 d后分别进行抗酒石酸酸性磷酸酶与细胞骨架纤维状肌动蛋白染色,培养24 h后采用RT-PCR检测抗酒石酸酸性磷酸酶5 mRNA表达。②取对数生长期的RAW264.7细胞,贴壁后分2组培养:对照组加入破骨诱导培养基,实验组加入含10 mmol/L乳酸的破骨诱导培养基,培养5 d后更换为无血清DMEM培养基继续培养24 h,离心取上清液,分别与等体积含体积分数10%胎牛血清DMEM培养基混合后作用条件培养基备用。取对数生长期的人脐静脉内皮细胞,分别与对照组、实验组条件培养基共培养,通过CCK-8、Transwell、划痕、成管实验观察细胞的增殖、迁移和成管能力,通过RT-PCR和Western Blot检测血管生成相关基因和蛋白的表达。
结果与结论:①抗酒石酸酸性磷酸酶与肌动蛋白染色结果显示,5,10 mmol/L乳酸可促进RAW264.7细胞破骨向分化,其中以10 mmol/L乳酸的促进作用更显著;RT-PCR检测结果显示,5,10,20 mmol/L乳酸均可提高酒石酸酸性磷酸酶5 mRNA的表达,其中以10 mmol/L乳酸的提高作用最显著;②与对照组条件培养基相比,实验组条件培养基可促进人脐静脉内皮细胞的增殖、迁移与成管能力(P < 0.05),提高血管内皮生长因子、血管生成素1的mRNA和蛋白表达(P < 0.05);③结果表明,乳酸诱导分化的破骨细胞条件培养基可促进内皮细胞的血管生成,机制可能与提高血管内皮生长因子、血管生成素1表达相关。
https://orcid.org/0009-0006-3765-1618(黄宏莉)


中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 破骨细胞, 条件培养基, 乳酸, 人脐静脉内皮细胞, 血管生成, 内皮细胞

Abstract: BACKGROUND: As a degradable scaffold material for bone tissue engineering, lactic acid is widely used in tissue regeneration and repair research, and plays an important role in promoting tissue healing, new bone formation and angiogenesis.
OBJECTIVE: To observe the effect of lactic acid degradation products on osteoclasts and to investigate the effects of lactic-interfered osteoclast conditioned medium on the proliferation, migration and tube-forming capacity of human umbilical vein endothelial cells.
METHODS: (1) The mouse monocyte macrophage cell line RAW264.7 at logarithmic growth period was selected, and adherent cells were cultured in the osteoclast induction medium (DMEM medium with nuclear factor-κB receptor-activating factor ligand and 10% fetal bovine serum) containing different concentrations of lactic acid (0, 5, 10, 20 mmol/L). After 5 days of culture, tartrate-resistant acid phosphatase staining and cytoskeletal fibrillar actin staining were conducted. After 24 hours of culture, RT-PCR was used to detect the mRNA expression of tartrate-resistant acid phosphatase 5. (2) RAW264.7 cells at logarithmic growth period were selected and adherent cells were divided into two groups. Control group was cultured in the osteoclast induction medium, while experimental group was cultured in the osteoclast induction medium containing 10 mmol/L lactic acid. After 5 days of culture, the medium in each group was removed and the cells in the two groups were cultured in the serum-free DMEM medium for another 24 hours. Cell supernatant was then collected and used as the conditioned medium after mixed with an equal volume of DMEM medium containing 10% fetal bovine serum. Human umbilical vein endothelial cells at the logarithmic growth phase were taken and separately co-cultured with the conditioned medium of the control and experimental groups. The proliferation, migration and tube-forming ability of human umbilical vein endothelial cells were observed by cell counting kit-8 assay, migration assay, scratch assay and tube-forming assay. The mRNA and protein expression of angiogenesis-related genes and proteins were observed by RT-PCR and western blot.
RESULTS AND CONCLUSION: Tartrate-resistant acid phosphatase staining and cytoskeletal fibrillar actin staining showed that 5 and 10 mmol/L lactic acid promoted osteoclastic differentiation of RAW264.7 cells and the promoting effect of 10 mmol/L lactate was more significant. RT-PCR results showed that the expression of tartrate-resistant acid phosphatase-5 mRNA of osteoclast-related genes was the highest when the lactic acid concentration was 5, 10, and 20 mmol/L (P < 0.05), especially 10 mmol/L. Compared with the control group, the proliferation, migration and tube-forming abilities of human umbilical vein endothelial cells were significantly increased in the experimental group (P < 0.05). Compared with the control group, the expression levels of vascular endothelial growth factor and angiogenin 1 mRNA and protein were increased in the experimental group (P < 0.05). To conclude, lactate-induced osteoclast conditioned medium could promote the angiogenesis of endothelial cells, and the mechanism may be related to the promotion of the expression of vascular endothelial growth factor and angiogenin 1.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

Key words: osteoclast, conditioned medium, lactic acid, human umbilical vein endothelial cell, angiogenesis, endothelial cell

中图分类号: