中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (26): 4160-4165.doi: 10.12307/2022.818

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

细胞信号转导抑制因子3影响青少年特发性脊柱侧凸畸形软骨内的成骨活性

孙锦鹏,刘  军,白云峰,华  峰,王浩然,郑宏瑞,吴  涛   

  1. 南京医科大学第二附属医院骨科,江苏省南京市   210011
  • 收稿日期:2021-07-17 接受日期:2021-08-21 出版日期:2022-09-18 发布日期:2022-03-07
  • 通讯作者: 吴涛,博士,副主任医师,南京医科大学第二附属医院骨科,江苏省南京市 210011
  • 作者简介:孙锦鹏,男,1995年生,汉族,在读硕士,主要从事青少年特发性脊柱侧凸畸形及椎板切除术后瘢痕形成研究。
  • 基金资助:
    国家自然科学基金青年基金(81301523),项目负责人:吴涛;江苏省自然科学基金面上项目(BK20181499),项目负责人:吴涛

Effects of suppressor of cytokine signaling 3 on osteogenic activity in the cartilage of adolescent idiopathic scoliosis

Sun Jinpeng, Liu Jun, Bai Yunfeng, Hua Feng, Wang Haoran, Zheng Hongrui, Wu Tao   

  1. Department of Orthopedics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
  • Received:2021-07-17 Accepted:2021-08-21 Online:2022-09-18 Published:2022-03-07
  • Contact: Wu Tao, MD, Associate chief physician, Department of Orthopedics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
  • About author:Sun Jinpeng, Master candidate, Department of Orthopedics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, Jiangsu Province, China
  • Supported by:
    the National Natural Science Foundation of China (Youth Fund), No. 81301523 (to WT); the Natural Science Foundation of Jiangsu Province (General Project), No. BK20181499 (to WT)

摘要:

文题释义:
青少年特发性脊柱侧凸畸形:是一类多发于女性且起病于青春期,没有其他伴发骨骼发育畸形且畸形进展迅速的脊柱三维畸形总称。该脊柱畸形主要由冠状位上脊柱侧向移位、矢状位上胸椎生理性后凸消失及水平面上椎体轴向旋转3个维度畸形综合构成,最终造成躯干失衡的发生,引起一系列相关并发症的发生。临床上该病表现出畸形进展速度与青春期骨骼生长速度明显相关的特征。
瘦素:是一种蛋白质类激素,主要由白色脂肪组织分泌,从外周及中枢两个方面参与机体能量代谢、软骨细胞活性、成骨细胞活性等诸多机体重要功能的调控。瘦素可激活体内下丘脑-甲状腺-交感神经通路,促进去甲肾上腺素、胰岛素样生长因子及甲状腺素等激素的分泌,增强生长板软骨细胞增殖分化活性;此外,瘦素可以直接作用于外周生长板软骨细胞表面受体,促进细胞增殖分化活性。

背景:已有相关研究报道,瘦素与细胞信号转导抑制因子3(suppressor of cytokine signaling 3,SOCS3)表达异常在青少年特发性脊柱侧凸畸形发病中起重要作用。
目的:探讨SOCS3是否通过瘦素信号传导通路调节软骨细胞内成骨活性。 
方法:①将人棘突软骨细胞分别以0(对照组),100 µg/L瘦素刺激24 h,免疫组化染色观察Ⅱ型胶原表达。②将人棘突软骨细胞分9组培养,分别为空白对照组、转染pcDNA3.1-NC组、转染pcDNA3.1-SOCS3组、转染siRNA-NC组、转染siRNA-SOCS3组、瘦素+转染pcDNA3.1-NC组、瘦素+转染pcDNA3.1-SOCS3组、瘦素+转染siRNA-NC组、瘦素+转染siRNA-SOCS3组。置于培养箱中培养24 h后,实时荧光定量PCR法检测SOCS3 mRNA的表达量,MTT法检测细胞抑制率。
结果与结论:①免疫组化染色显示,瘦素刺激组软骨细胞Ⅱ型胶原表达多于对照组。②实时荧光定量PCR检测显示,转染pcDNA3.1-SOCS3可显著提高软骨细胞SOCS3 mRNA表达量,转染siRNA-SOCS3可显著降低软骨细胞SOCS3 mRNA表达量,转染pcDNA3.1-NC、siRNA-NC对软骨细胞的SOCS3 mRNA表达量无影响;瘦素预刺激可提高转染pcDNA3.1-SOCS3、siRNA-SOCS3软骨细胞的SOCS3 mRNA表达量,对转染pcDNA3.1-NC、siRNA-NC软骨细胞的SOCS3 mRNA表达量无影响。MTT检测显示,转染pcDNA3.1-SOCS3可抑制软骨细胞内成骨活性,转染siRNA-SOCS3可增强软骨细胞内成骨活性;瘦素预刺激可提高转染pcDNA3.1-NC、pcDNA3.1-SOCS3、siRNA-NC、siRNA-SOCS3软骨细胞内成骨活性。③结果表明,瘦素刺激可提高软骨细胞内成骨活性,SOCS3表达上调可通过瘦素抵抗抑制软骨细胞内成骨活性。
缩略语:细胞信号转导抑制因子3:suppressor of cytokine signaling 3,SOCS3

https://orcid.org/0000-0002-7927-4199 (孙锦鹏) 

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: 瘦素, 细胞信号转导抑制因子3, 软骨细胞, 青少年, 脊柱侧凸畸形, 质粒转染

Abstract: BACKGROUND: It has been reported that the abnormal expression of leptin and suppressor of cytokine signaling 3 (SOCS3) plays an important role in the pathogenesis of adolescent idiopathic scoliosis.
OBJECTIVE: To investigate whether SOCS3 regulates the osteogenic activity of chondrocytes through the leptin signaling pathway.
METHODS: Human spinous chondrocytes were stimulated with 0 (blank control group) and 100 µg/L leptin for 24 hours, and immunohistochemical staining was used to detect the expression of type II collagen. The human spinous chondrocytes were cultured in nine groups: a blank control group, a pcDNA3.1-NC transfected group, a pcDNA3.1-SOCS3 transfected group, a siRNA-NC transfected group, a siRNA-SOCS3 transfected group, a leptin+transfected pcDNA3.1-NC group, a leptin+transfected pcDNA3.1-SOCS3 group, a leptin+transfected siRNA-NC group, and a leptin+transfected siRNA-SOCS3 group. After being cultured in an incubator for 24 hours, real-time fluorescent quantitative PCR was used to detect the mRNA expression of SOCS3, and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to detect the cell inhibition rate.
RESULTS AND CONCLUSION: Results of immunohistochemical staining showed that the expression of type II collagen in chondrocytes s was higher in leptin-stimulated group than the blank control group. Results of real-time fluorescence quantitative PCR showed that transfection of pcDNA3.1-SOCS3 could significantly increase the mRNA expression of SOCS3 in chondrocytes, and transfection of siRNA-SOCS3 could significantly reduce the mRNA expression of SOCS3 in chondrocytes. In contrast, transfection of pcDNA3.1-NC and siRNA-NC had no effect on the mRNA expression of SOCS3 in chondrocytes. Leptin pre-stimulation could increase the mRNA expression of SOCS3 in chondrocytes transfected with pcDNA3.1-SOCS3 and siRNA-SOCS3, but it had no effect on the mRNA expression of SOCS3 in chondrocytes transfected with pcDNA3.1-NC and siRNA-NC. Results of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed that transfection of pcDNA3.1-SOCS3 could inhibit the osteogenic activity of chondrocytes, and transfection of siRNA-SOCS3 could enhance the osteogenic activity of chondrocytes. And leptin pre-stimulation could increase the osteogenic activity of chondrocytes transfected with pcDNA3.1-NC, pcDNA3.1-SOCS3, siRNA-NC, and siRNA-SOCS3. These findings indicate that leptin stimulation can increase the osteogenic activity of chondrocytes, and upregulating the expression of SOCS3 can inhibit the osteogenic activity of chondrocytes through leptin resistance.

Key words: leptin, suppressor of cytokine signaling 3, chondrocyte, adolescent, scoliosis, plasmid transfection

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