实用医学杂志 ›› 2025, Vol. 41 ›› Issue (4): 509-514.doi: 10.3969/j.issn.1006-5725.2025.04.007

• 基础研究 • 上一篇    

TINCR-MAF:MAFB转录因子网络对人角质形成细胞增殖和分化的影响

郑锦芬1,石翠萍2,凌云霞1,张德华1,翟倩玉1,朱李佳1,蒋豆蔻1,王小红1,赖永珲1   

  1. 1.深圳市慢性病防治中心皮肤科 (广东 深圳 518020 )
    2.深圳市人民医院皮肤科 (广东 深圳 518020 )
  • 收稿日期:2025-01-14 出版日期:2025-02-25 发布日期:2025-02-28
  • 基金资助:
    广东省医学科学技术研究基金项目(A2021242);深圳市科技计划项目(JCYJ20190813153403633)

Effect of TINCR⁃MAF: MAFB transcription factor network on proliferation and differentiation of human kerathnocytes

Jinfen ZHENG1,Cuiping SHI2,Yunxia LING1,Dehua ZHANG1,Qianyu ZHAI1,Lijia ZHU1,Doukou JIANG1,Xiaohong WANG1,Yonghui. LAI1   

  1. Department of Dermatology,Shenzhen Center for Chronic Disease Control,Shenzhen 518020,Guangdong,China
  • Received:2025-01-14 Online:2025-02-25 Published:2025-02-28

摘要:

目的 探讨TINCR-MAF:MAFB转录因子网络对角质形成细胞中增殖和分化相关基因表达的影响,以验证该网络在银屑病发生发展中的作用及其潜在机制。 方法 采用RNA干扰技术敲除TINCR基因表达,利用CCK-8法检测角质形成细胞的增殖能力。同时,通过qRT-PCR和Western blot分析TINCR、MAFB及KLF4基因的RNA和蛋白表达水平。采用免疫组化方法检测正常皮肤与银屑病组织中分化相关基因KLF4蛋白的表达情况。 结果 TINCR基因siRNA干扰后,角质形成细胞在24、48和72 h内的增殖能力显著降低(P < 0.001),表明TINCR基因对细胞增殖具有关键作用。qRT-PCR和Western blot分析结果显示,TINCR、MAFB和KLF4基因的RNA和蛋白表达均显著降低(P < 0.001),提示TINCR可能通过调控MAFB转录因子及KLF4分化相关基因的表达影响角质形成细胞的分化。此外,免疫组化结果显示,与正常皮肤组织相比,银屑病组织中KLF4蛋白的表达显著升高,提示KLF4在银屑病的发生机制中发挥重要作用。 结论 TINCR-MAF:MAFB转录因子网络可能通过影响角质形成细胞的增殖和分化参与银屑病的发生与发展。这一发现为银屑病的发病机制提供了新的视角,并为未来的治疗策略提供了潜在靶点。

关键词: 银屑病, TINCR, MAF, MAFB, KLF4

Abstract:

Objective To explore the impact of the TINCR-MAF:MAFB transcription factor network on the expression of proliferation and differentiation-related genes in keratinocytes, to verify the role of this network in the occurrence and development of psoriasis and its potential mechanisms. Methods Employed RNA interference technology to knock down TINCR gene expression, and the proliferation ability of keratinocytes was assessed using the CCK-8 method. Additionally, qRT-PCR and Western blot analyses were conducted to evaluate the RNA and protein expression levels of TINCR, MAFB, and KLF4 genes. Immunohistochemical methods were used to detect the expression of KLF4 protein in psoriasis tissues. Results After TINCR gene siRNA interference, the proliferation ability of keratinocytes significantly decreased at 24, 48, and 72 hours (P < 0.001), indicating that the TINCR gene plays a critical role in cell proliferation. The results of qRT-PCR and Western blot analyses showed that the RNA and protein expression levels of TINCR, MAFB, and KLF4 genes were significantly reduced (P < 0.001), suggesting that TINCR may influence the differentiation of keratinocytes by regulating the expression of MAFB transcription factor and KLF4 differentiation-related genes. Furthermore, immunohistochemical results indicated that the expression of KLF4 protein was significantly elevated in psoriasis tissues compared to normal skin tissues, suggesting that KLF4 plays an important role in the pathogenesis of psoriasis. Conclusions The TINCR-MAF:MAFB transcription factor network may participate in the occurrence and development of psoriasis by affecting the proliferation and differentiation of keratinocytes. This finding provides a new perspective on the pathogenesis of psoriasis and potential targets for future therapeutic strategies.

Key words: psoriasis, TINCR, MAF, MAFB, KLF4

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