中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (28): 7260-7266.doi: 10.12307/2026.811

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

ADAMTS8对增生性瘢痕成纤维细胞增殖和凋亡的调控作用

张静宜1,2,马  芳2,3,刘虹麟2,4,王建军1,2,夏童童2,杨佳琪2,王雅菁2,沈江涌5,姜怡邓2   

  1. 1宁夏医科大学第一临床医学院,宁夏回族自治区银川市  750004;2国家卫生健康委员会代谢性心血管疾病研究重点实验室,宁夏回族自治区银川市  750004;宁夏医科大学,3基础医学院,4检验学院,宁夏回族自治区银川市  750004;5宁夏医科大学总医院烧伤科,宁夏回族自治区银川市  750004
  • 收稿日期:2025-09-17 修回日期:2025-12-19 出版日期:2026-10-08 发布日期:2026-02-09
  • 通讯作者: 沈江涌,博士,主任医师,宁夏医科大学总医院烧伤科,宁夏回族自治区银川市 750004
  • 作者简介:张静宜,女,1999年生,宁夏回族自治区固原市人,汉族,宁夏医科大学在读硕士,主要从事增生性瘢痕形成的机制研究。
  • 基金资助:
    国家自然科学基金项目(82360628),项目负责人:沈江涌

Regulatory role of ADAMTS8 in proliferation and apoptosis of hypertrophic scar fibroblasts

Zhang Jingyi1, 2, Ma Fang2, 3, Liu Honglin2, 4, Wang Jianjun1, 2, Xia Tongtong2, Yang Jiaqi2, Wang Yajing2, Shen Jiangyong5, Jiang Yideng2#br#

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  1. 1First Clinical Medical College of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China; 2Key Laboratory of Metabolic and Cardiovascular Diseases, National Health Commission, Yinchuan 750004, Ningxia Hui Autonomous Region, China; 3School of Basic Medical Sciences, 4College of Laboratory Medicine, Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China; 5Department of Burns, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China
  • Received:2025-09-17 Revised:2025-12-19 Online:2026-10-08 Published:2026-02-09
  • Contact: Shen Jiangyong, MD, Chief physician, Department of Burns, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China
  • About author:Zhang Jingyi, MS candidate, First Clinical Medical College of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China; Key Laboratory of Metabolic and Cardiovascular Diseases, National Health Commission, Yinchuan 750004, Ningxia Hui Autonomous Region, China
  • Supported by:
    National Natural Science Foundation of China, No. 82360628 (to SJY)

摘要:



文题释义:
增生性瘢痕:是由创伤、烧伤、手术等引起深部皮肤损伤后可能出现的纤维增生性疾病,临床表现有发红、色素沉积、灼痛、瘙痒等症状。现阶段增生性瘢痕的临床治疗方法很多,包括手术、药物、激素、压力、激光、放射等,但治疗效果不一、不良反应明显、缺乏安全性且复发率较高。
含血小板反应蛋白模体的金属蛋白酶与整合素前体(ADAMTS):属于锌依赖性金属蛋白酶超家族,参与多种病理状态,包括癌症转移、炎症性疾病、呼吸系统疾病和心血管疾病。研究表明,ADAMTS通过调节细胞增殖、凋亡、迁移和细胞外基质重塑促进各种疾病中组织重塑的发展。

背景:研究证实,含血小板反应蛋白模体的金属蛋白酶与整合素前体8(A disintegrin and metalloproteinase with thrombospondin motifs 8,ADAMTS8)对纤维化具有一定的调控作用,因此,深入探讨ADAMTS8对增生性瘢痕的作用机制具有重要临床意义。
目的:探讨ADAMTS8对增生性瘢痕的调控作用。 
方法:①免疫组化染色检测人体正常皮肤组织与增生性瘢痕组织中 Ⅰ型胶原、Ⅲ型胶原、α-平滑肌肌动蛋白及ADAMTS8的表达。Western blot检测人体正常皮肤组织与增生性瘢痕组织中ADAMTS8蛋白表达,以增生性瘢痕为阳性样本,正常皮肤为阴性样本,绘制受试者工作特征曲线,分析ADAMTS8预测区分正常皮肤与增生性瘢痕的能力。②通过STRING 12.0平台对ADAMTS8构建蛋白质-蛋白质相互作用网络,对获取的靶点进行GO功能富集和KEGG通路富集分析。③分离培养人增生性瘢痕组织成纤维细胞,将第3-6代成纤维细胞分3组处理:对照组常规培养,Ad-NC组转染空载体腺病毒,Ad-ADAMTS8组转染含ADAMTS8过表达的腺病毒,CCK-8法、EdU染色检测细胞增殖活力,流式细胞术、TUNEL染色检测细胞凋亡情况。 
结果与结论:①免疫组化染色显示,增生性瘢痕中Ⅰ型胶原、 Ⅲ型胶原、α-平滑肌肌动蛋白表达高于正常皮肤(P < 0.001),ADAMTS8表达低于正常皮肤(P < 0.001)。Western blot检测显示,增生性瘢痕中ADAMTS8蛋白表达低于正常皮肤(P < 0.001)。受试者工作特征曲线显示,ADAMTS8预测发生增生性瘢痕的曲线下面积为0.86,说明ADAMTS8具有良好区分增生性瘢痕和正常皮肤的能力。②通过STRING数据库筛选出排名前41的基因,KEGG富集显示ADAMTS8主要参与细胞外基质受体相互作用、磷脂酰肌醇-3-激酶-蛋白激酶B信号通路及胞葬作用等生物学过程和关键机制;GO富集显示ADAMTS8参与凋亡相关的通路富集,包括成纤维细胞生长因子受体信号通路的负向调控、成纤维细胞生长因子的结合、细胞凋亡的负向调控和细胞凋亡过程。③CCK-8法、EdU染色显示,过表达ADAMTS8可抑制增生性瘢痕成纤维细胞增殖;流式细胞术、TUNEL染色显示,过表达ADAMTS8可促进增生性瘢痕成纤维细胞凋亡。④结果表明,ADAMTS8在人增生性瘢中表达降低,ADAMTS8过表达可抑制增生性瘢痕成纤维细胞增殖、促进增生性瘢痕成纤维细胞凋亡。

https://orcid.org/0009-0005-0327-874X(张静宜)


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: 增生性瘢痕, ADAMTS8, 纤维化, 成纤维细胞, 增殖, 凋亡, 组织构建

Abstract: BACKGROUND: Studies have confirmed that A disintegrin and metalloproteinase with thrombospondin motifs 8 (ADAMTS8) plays a regulatory role in fibrosis. Therefore, elucidating the mechanism of ADAMTS8 in hypertrophic scar formation holds considerable clinical significance. 
OBJECTIVE: To investigate the regulatory role of ADAMTS8 in scar fibroblasts.  
METHODS: (1) Immunohistochemical staining was used to detect the expression of type I collagen, type III collagen, α-smooth muscle actin, and ADAMTS8 in normal human skin tissue and hypertrophic scar tissue. The protein expression level of ADAMTS8 was detected by western blot assay in normal human skin tissue and hypertrophic scar tissue. Hypertrophic scar tissue was taken as positive sample and normal human skin tissue was taken as negative sample. Receiver operating characteristic curve was drawn to analyze the ability of ADAMTS8 to predict the difference between normal human skin and hypertrophic scar. (2) A protein-protein interaction network of ADAMTS8 was constructed using the STRING 12.0 platform, and Gene Ontology function enrichment and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were conducted on the obtained targets. (3) Human hypertrophic scar tissue fibroblasts were isolated and cultured. The 3rd to 6th generation fibroblasts were selected and divided into three groups: the control group was cultured routinely; empty vector group (Ad-NC) transfected with empty vector adenovirus, and overexpressing ADAMTS8 group (Ad-ADAMTS8) was transfected with ADAMTS8 overexpressing adenovirus. The cell proliferation activity was detected by CCK8 assay and EDU staining. Cell apoptosis was detected by flow cytometry and TUNEL staining. 
RESULTS AND CONCLUSION: (1) Immunohistochemical staining demonstrated significantly higher protein expression of type I collagen, type III collagen, and α-smooth muscle actin in hypertrophic scars compared with normal skin (P < 0.001). In contrast, ADAMTS8 expression was significantly lower in hypertrophic scars (P < 0.001). Western blot assay showed that ADAMTS8 protein expression was significantly lower in hypertrophic scar tissue than in normal skin (P < 0.001). Receiver operating characteristic curve analysis indicated that the area under the curve for ADAMTS8 in predicting the development of hypertrophic scars was 0.86, indicating its good ability to discriminate between hypertrophic scar and normal skin. (2) The top 41 genes were screened using STRING database. Kyoto Encyclopedia of Genes and Genomes enrichment showed that ADAMTS8 was mainly involved in the biological processes and key mechanisms such as extracellular matrix receptor interaction, phosphatidylinositol-3-kinase-protein kinase B signaling pathway and efferocytosis. Gene ontology enrichment showed that ADAMTS8 was involved in apoptosis-related pathway enrichment, including negative regulation of fibroblast growth factor receptor signaling pathway, binding of fibroblast growth factor, negative regulation of apoptosis and apoptosis process. (3) CCK-8 assay and EdU staining showed that of ADAMTS8 overexpression could inhibit the proliferation of hypertrophic scar fibroblasts. Flow cytometry and TUNEL staining showed that ADAMTS8 overexpression could promote the apoptosis of hypertrophic scar fibroblasts. (4) These results indicate that ADAMTS8 expression is significantly decreased in human hypertrophic scars, and ADAMTS8 overexpression can inhibit proliferation of hypertrophic scar fibroblasts and promote apoptosis of hypertrophic scar fibroblasts.

Key words: hypertrophic scar, ADAMTS8, fibrosis, fibroblast, proliferation, apoptosis, tissue construction

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