上海交通大学学报(医学版) ›› 2026, Vol. 46 ›› Issue (7): 857-867.doi: 10.3969/j.issn.1674-8115.2026.07.004

• 论著 · 基础研究 • 上一篇    

细胞因子信号抑制因子3对小鼠颅顶成骨前体细胞成骨分化的影响

崔怡雯1, 孙思远1, 黄紫晗1, 代庆刚2, 江凌勇1()   

  1. 1.上海交通大学医学院附属第九人民医院口腔颅颌面科,上海交通大学口腔医学院,国家口腔医学中心,口腔疾病国家临床医学研究中心,上海市口腔医学重点实验室,上海市口腔医学研究所,上海 200011
    2.上海交通大学医学院附属第九人民医院口腔第二门诊部,国家口腔医学中心,口腔疾病国家临床医学研究中心,上海市口腔医学重点实验室,上海市口腔医学研究所,上海 200011
  • 收稿日期:2026-02-05 接受日期:2026-04-09 出版日期:2026-07-07 发布日期:2026-07-07
  • 通讯作者: 江凌勇,主任医师,教授,博士;电子信箱:jianglingyong@sjtu.edu.cn
  • 作者简介:第一联系人:崔怡雯, 孙思远为共同第一作者(co-first authors)。
  • 基金资助:
    国家重点研发计划(2024YFC2510700);国家自然科学基金(82430032);国家自然科学基金(825B2029);国家自然科学基金(825B1014);上海市科技创新行动计划国际科技合作项目/政府间国际科技合作项目(23410713600);重庆市科卫联合医学科研项目开放项目(2026KFXM032);上海交通大学医学院“双百人”项目(20221809)

Effect of suppressor of cytokine signaling 3 on osteogenic differentiation of mouse calvarial osteoblast precursors

Cui Yiwen1, Sun Siyuan1, Huang Zihan1, Dai Qinggang2, Jiang Lingyong1()   

  1. 1.Department of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai 200011, China
    2.The 2nd Dental Centre, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
  • Received:2026-02-05 Accepted:2026-04-09 Online:2026-07-07 Published:2026-07-07
  • Contact: Jiang Lingyong, E-mail: jianglingyong@sjtu.edu.cn.
  • Supported by:
    National Key Research and Development Program of China(2024YFC2510700);National Natural Science Foundation of China(82430032);Shanghai Science and Technology Innovation Action Plan-International Science and Technology Cooperation Program(23410713600);Chongqing Municipal Science and Health Joint Medical Research(2026KFXM032);“Two-hundred Talents” Program of Shanghai Jiao Tong University School of Medicine(20221809)

摘要:

目的·构建细胞因子信号抑制因子3(suppressor of cytokine signaling 3,Socs3)稳定低表达的小鼠颅顶成骨前体细胞MC3T3-E1稳转细胞株,研究SOCS3在颅顶成骨前体细胞成骨分化过程中的功能。方法·通过实时荧光定量聚合酶链反应(real-time quantitative PCR,RT-qPCR)和蛋白质印迹法(Western blotting)检测MC3T3-E1细胞在成骨诱导后SOCS3的表达量改变。设计2对特异性靶向Socs3基因的短发夹RNA(short hairpin RNA,shRNA),构建敲低该基因的慢病毒载体。用包装后的慢病毒感染MC3T3-E1细胞,嘌呤霉素筛选获得Socs3稳定低表达的MC3T3-E1稳转细胞株。通过RT-qPCR和Western blotting验证敲减效率。利用CCK-8实验检测SOCS3对MC3T3-E1细胞增殖能力的影响。使用成骨诱导分化培养基诱导分化7 d后,进行碱性磷酸酶(alkaline phosphatase,ALP)染色,RT-qPCR检测成骨相关基因。成骨诱导分化14 d后,进行茜素红S(alizarin red S,ARS)染色,研究Socs3敲低的MC3T3-E1稳转细胞株的成骨分化能力。结果·RT-qPCR和Western blotting实验发现MC3T3-E1细胞成骨诱导4 d和7 d时,Socs3基因和SOCS3蛋白表达水平较诱导前升高,且7 d时高于4 d(均P<0.001)。感染shSocs3-1与shSocs3-2慢病毒的MC3T3-E1稳转细胞株中Socs3基因和SOCS3蛋白表达水平均被抑制(均P<0.001),提示敲低Socs3的MC3T3-E1稳转细胞株构建成功。CCK-8实验结果表明在培养1、4、7 d时,敲低Socs3对MC3T3-E1细胞的增殖能力均具有抑制作用(均P<0.001)。ALP染色显示,敲低Socs3的MC3T3-E1稳转细胞株成骨诱导分化7 d,ALP活性降低(P<0.001)。ARS染色显示敲低Socs3对MC3T3-E1细胞的矿化结节形成能力具有抑制作用(P<0.001)。通过RT-qPCR检测成骨相关标志基因,发现Socs3敲低组runt相关转录因子2(runt-related transcription factor 2,Runx2)、碱性磷酸酶(alkaline phosphatase,Alp)、成骨细胞特异性转录因子(osterix,Osx)、Ⅰ型胶原蛋白A1(α1 type Ⅰ collagen,Col1a1)、分泌型磷蛋白-1(secreted phosphoprotein 1,Spp1)、骨钙蛋白(bone γ-carboxyglutamate protein,Bglap)表达均显著降低(均P<0.001)。结论·SOCS3表达随MC3T3-E1细胞成骨分化过程升高。敲低Socs3可抑制MC3T3-E1细胞增殖能力及成骨分化能力。

关键词: 细胞因子信号抑制因子3, MC3T3-E1细胞, 颅顶成骨前体细胞, 成骨分化

Abstract:

Objective ·To construct a stable suppressor of cytokine signaling 3 (Socs3)-knockdown MC3T3-E1 mouse calvarial osteoblast precursor cell line and to investigate the role of SOCS3 in the osteogenic differentiation of calvarial osteoblast precursors. Methods ·The expression levels of SOCS3 in MC3T3-E1 cells after osteogenic induction were detected by real-time quantitative PCR (RT-qPCR) and Western blotting. Two pairs of short hairpin RNAs (shRNAs) specifically targeting the Socs3 gene were designed, and lentiviral vectors for Socs3 knockdown were constructed. MC3T3‑E1 cells were then infected with the packaged lentiviruses, followed by puromycin screening to obtain MC3T3‑E1 cell lines with stable Socs3 knockdown. Knockdown efficiency was verified by RT-qPCR and Western blotting. The effect of SOCS3 on the proliferation capacity of MC3T3-E1 cells was assessed using a CCK-8 assay. After osteogenic differentiation for 7 d, alkaline phosphatase (ALP) staining and RT‑qPCR detection of osteogenesis‑related genes were performed. After 14 d of osteogenic differentiation, alizarin red S (ARS) staining was performed to assess the osteogenic differentiation capacity of the stable knockdown cell lines. Results ·RT-qPCR and Western blotting showed that both Socs3 mRNA and SOCS3 protein levels were elevated at 4 d and 7 d after osteogenic induction compared with those before induction, and the levels at 7 d were higher than those at 4 d (both P<0.001). In MC3T3-E1 stable cell lines infected with shSocs3-1 and shSocs3-2 lentivirus, the expression levels of Socs3 mRNA and SOCS3 protein were significantly inhibited (P<0.001), indicating the successful establishment of stable Socs3-knockdown MC3T3-E1 cell lines. The CCK-8 assay showed that Socs3 knockdown inhibited the proliferation capacity of MC3T3-E1 cells at 1 d, 4 d, and 7 d of culture (P<0.001). ALP staining demonstrated reduced ALP activity in the Socs3-knockdown MC3T3-E1 cell lines after 7 d of osteogenic induction (P<0.001). ARS staining indicated that Socs3 knockdown inhibited mineralized nodule formation in MC3T3-E1 cells (P<0.001). RT-qPCR detection of osteogenic marker genes indicated that the expression levels of runt-related transcription factor 2 (Runx2), alkaline phosphatase (Alp), osterix (Osx), α1 type Ⅰ collagen (Col1a1), secreted phosphoprotein 1 (Spp1), and bone γ-carboxyglutamate protein (Bglap) were significantly reduced in the Socs3-knockdown group (all P<0.001). Conclusion ·SOCS3 expression increases during the osteogenic differentiation of MC3T3-E1 cells. Knockdown of Socs3 can inhibit both the proliferation and osteogenic differentiation capacities of MC3T3-E1 cells.

Key words: suppressor of cytokine signaling 3 (SOCS3), MC3T3-E1 cell, calvarial osteoblast precursor, osteogenic differentiation

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