中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (36): 7701-7708.doi: 10.12307/2025.559

• 骨髓干细胞 bone marrow stem cells •    下一篇

HOXA10基因修饰骨髓间充质干细胞促进骨再生

葛  霄1,2,3,赵状状1,2,3,郭舒瑜2,3,4,徐荣耀1,2,3   

  1. 南京医科大学附属口腔医院,1口腔颌面外科,4口腔正畸科,江苏省南京市   210029;2口腔疾病研究与防治国家级重点实验室培育建设点,江苏省南京市   210029;3江苏省口腔转化医学工程研究中心,江苏省南京市   210029
  • 收稿日期:2024-07-15 接受日期:2024-09-25 出版日期:2025-12-28 发布日期:2025-02-28
  • 通讯作者: 徐荣耀,博士,副教授,硕士生导师,南京医科大学附属口腔医院口腔颌面外科,江苏省南京市 210029;口腔疾病研究与防治国家级重点实验室培育建设点,江苏省南京市 210029;江苏省口腔转化医学工程研究中心,江苏省南京市 210029
  • 作者简介:葛霄,男,1999 年生,汉族,江苏省南京市人,南京医科大学在读硕士,主要从事颌面部发育的研究。
  • 基金资助:
    国家自然科学基金项目(82270943),项目负责人:郭舒瑜

HOXA10 gene-modified bone marrow mesenchymal stem cells promote bone regeneration

Ge Xiao1, 2, 3, Zhao Zhuangzhuang1, 2, 3, Guo Shuyu2, 3, 4, Xu Rongyao1, 2, 3   

  1. 1Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China; 2State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing 210029, Jiangsu Province, China; 3Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, Jiangsu Province, China; 4Department of Orthodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • Received:2024-07-15 Accepted:2024-09-25 Online:2025-12-28 Published:2025-02-28
  • Contact: Xu Rongyao, PhD, Associate professor, Master’s supervisor, Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China; State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing 210029, Jiangsu Province, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, Jiangsu Province, China
  • About author:Ge Xiao, Master candidate, Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China; State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing 210029, Jiangsu Province, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, Jiangsu Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 82270943 (to GSY)

摘要:

文题释义:

HOXA10基因:是一种同源框基因(homeobox gene),属于HOX基因家族,在调控胚胎发育和细胞分化过程中起关键作用。
骨髓间充质干细胞:是存在于骨髓中的一种多能干细胞,具有自我更新和多向分化能力,在组织修复和再生医学中具有重要作用。
骨再生修复:目前临床上主要通过自体骨移植、人工骨移植、干细胞疗法和生长因子疗法等促进骨缺损的再生和修复,以恢复缺损骨骼的结构和功能。

摘要
背景:自体骨或人工骨移植在临床上已广泛应用于颌面骨缺损修复,但这些方法仍存在成骨效果不佳等问题。骨髓间充质干细胞在骨形成过程中发挥关键作用,其中,外胚层来源的颌骨骨髓间充质干细胞与中胚层来源的髂骨骨髓间充质干细胞相比,具有更强的增殖和成骨分化能力,阐明其中的关键机制,有望为颅颌面骨缺损修复提供新策略。
目的:比较人颌骨骨髓间充质干细胞与髂骨骨髓间充质干细胞的生物学差异,并找出其中的关键调节基因。
方法:①收集3例牙槽突裂患者的颌骨和髂骨,分离培养出原代骨髓间充质干细胞,通过集落形成实验检测细胞增殖能力,β-半乳糖苷酶染色检测细胞衰老情况,Western blot检测衰老和成骨相关蛋白表达,成骨诱导液处理后茜素红染色检测成骨能力;②对颌骨骨髓间充质干细胞和髂骨骨髓间充质干细胞进行转录组和差异基因表达分析,找到差异表达最大的20个基因,鉴定出关键调控因子;③在髂骨骨髓间充质干细胞中敲低HOXA10基因,比较分析髂骨骨髓间充质干细胞自我更新、抗衰老和成骨能力变化;④将基因编辑的髂骨骨髓间充质干细胞装入β-磷酸三钙支架中,并植入裸鼠背部皮下,8周后对植入物进行Masson染色和免疫荧光染色,观察成骨能力差异。

结果与结论:①与髂骨骨髓间充质干细胞相比,颌骨骨髓间充质干细胞具有更强的增殖、抗衰老和成骨分化能力;②通过转录组分析,鉴定出HOXA10是髂骨骨髓间充质干细胞中高度上调的核心转录因子;③在髂骨骨髓间充质干细胞中敲低HOXA10后,细胞增殖、抗衰老和成骨分化能力显著增强;④HOXA10敲低的髂骨骨髓间充质干细胞/β-磷酸三钙植入裸鼠背部皮下后,成骨形成能力更强;⑤上述结果表明,HOXA10是决定骨髓间充质干细胞增殖、抗衰老和成骨分化能力的关键调节基因。HOXA10基因修饰的髂骨骨髓间充质干细胞移植可作为颌面骨缺损修复的潜在应用策略。 

https://orcid.org/0009-0005-8241-9992 (葛霄) 


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 骨髓间充质干细胞, 颌骨, 髂骨, 成骨分化, HOXA10, 颅颌面骨修复, 生物支架, 工程化干细胞

Abstract: BACKGROUND: Autologous or artificial bone grafts have been widely used to repair maxillofacial bone defects clinically, but these methods still suffer from insufficient osteogenesis. Bone marrow mesenchymal stem cells play a key role in the bone formation. Notably, ectoderm-derived jaw bone marrow mesenchymal stem cells have stronger proliferation and osteogenic differentiation capacity compared with mesoderm-derived iliac bone marrow mesenchymal stem cells, elucidating the key mechanisms involved. It is expected to provide a new strategy for the repair of craniomaxillofacial bone defects.
OBJECTIVE: To compare the biological differences between human jaw bone marrow mesenchymal stem cells and iliac bone marrow mesenchymal stem cells and identify the key regulatory genes.
METHODS: (1) Jaw bone and iliac bone were collected from three patients with alveolar cleft. Primary bone marrow mesenchymal stem cells were isolated and cultured. Cell proliferation ability was detected by colony formation assay. Cell senescence was detected by β-galactosidase staining assay. Senescence and osteogenesis-related protein expression levels were detected by western blot assay. Osteogenic ability was detected by alizarin red staining after osteogenic induction solution treatment. (2) Jaw bone marrow mesenchymal stem cells and iliac bone marrow mesenchymal stem cells were subjected to transcriptome and differential gene expression analysis to find the 20 genes with the largest differential expression and identify the key regulatory factors. (3) The gene in iliac bone marrow mesenchymal stem cells were knocked down to comparatively analyze the changes in self-renewal, anti-aging and osteogenic capacity of iliac bone marrow mesenchymal stem cells. (4) The gene-edited iliac bone marrow mesenchymal stem cells were loaded into β-tricalcium phosphate scaffolds and implant into nude mice for 8 weeks. The scaffolds were stained with Masson staining and immunofluorescence staining to observe the difference in osteogenic capacity. 
RESULTS AND CONCLUSION: (1) Jaw bone marrow mesenchymal stem cells have stronger proliferation, anti-aging and osteogenic differentiation abilities compared to iliac bone marrow mesenchymal stem cells. (2) By transcriptome analysis, we identified HOXA10 as a highly up-regulated core transcription factor in iliac bone marrow mesenchymal stem cells. (3) After knocking down HOXA10 in iliac bone marrow mesenchymal stem cells, we observed a significant increase in proliferation, anti-aging, and osteogenic differentiation abilities. (4) After HOXA10 knocked-down iliac bone marrow mesenchymal stem cells/β-tricalcium phosphate was implanted subcutaneously on the back of nude mice, and their bone formation ability was stronger. (5) The above results suggest that HOXA10 is a key regulatory gene that determines the proliferative, anti-aging and osteogenic differentiation abilities of bone marrow mesenchymal stem cells. HOXA10 gene-modified iliac bone marrow mesenchymal stem cell transplantation can be used as a potential application strategy for repairing maxillofacial bone defects.

Key words: ">bone marrow mesenchymal stem cell, jaw bone, iliac bone, osteogenic differentiation, HOXA10, cranio-maxillofacial bone repair, biological scaffold, engineered stem cell

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