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文章精选 | 脊髓胶质瘤治疗新靶点?南昌大学二附院祝新根团队最新成果揭秘

  • 2026-06-02 16:52:20
文章精选 | 脊髓胶质瘤治疗新靶点?南昌大学二附院祝新根团队最新成果揭秘

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The anti-cancer role of tumor protein p53-induciblenuclear protein 2/nuclear factor-KB/nuclear factorerythroid 2-related factor 2/heme oxygenase-1 pathwayin spinal cord glioma

肿瘤蛋白p53诱导型核蛋白2/核因子κB/核因子E2相关因子2/血红素加氧酶1通路在脊髓胶质瘤中的抗癌作用

研究背景:罕见肿瘤的分子机制探

脊髓胶质瘤(SCG)是一种极为罕见的中枢神经系统肿瘤,仅占所有原发性中枢神经系统肿瘤的不到5%。由于发病率低、病例稀少,目前针对恶性及高级别SCG的标准治疗方案尚未建立,临床主要依赖回顾性分析和有限病例的经验总结。

在这种背景下,深入阐明SCG的分子病理机制,寻找新的治疗靶点,成为该领域亟待突破的科学问题。

核心发现:TP53INP2在胶质瘤中高表达

图1 TP53INP2在四种人胶质瘤细胞系中均显著高表达(a),敲低后显著诱导凋亡(c-d)、抑制增殖(e-i)

TP53INP2(肿瘤蛋白p53诱导核蛋白2)是一种具有双重功能的蛋白质,既参与细胞自噬调控,又能在细胞核内发挥转录因子作用。既往研究发现,TP53INP2在不同实体瘤中的表达模式并不一致:在头颈鳞癌和结直肠癌中呈低表达,而在膀胱癌中则显著高表达并促进肿瘤侵袭。

南昌大学第二附属医院神经外科朱新根教授团队首次系统揭示了TP53INP2在脊髓胶质瘤中的促癌作用:

  • 表达特征:TP53INP2在U118、LN229、U87、U251四种人胶质瘤细胞系中均显著高表达,其中U251细胞表达水平最高(图1a)

  • 功能验证:敲低TP53INP2后,U251细胞凋亡率明显升高(图1c-d),增殖能力显著受抑——CCK-8检测细胞活力下降(图1e)、克隆形成数减少(图1f-g)、EdU阳性细胞比例降低(图1h-i)

机制解析:NF-κB/Nrf2/HO-1信号轴

图2:敲低TP53INP2抑制NF-κB激活(a-b, i-j),促进Nrf2/HO-1通路活化(c-h)

研究团队进一步挖掘了TP53INP2发挥促癌作用的分子机制,聚焦于NF-κB/Nrf2/HO-1这一经典抗氧化应激通路:

敲低TP53INP2后,NF-κB蛋白水平显著降低,IκB蛋白水平明显升高(图4a-b, d-e)

Nrf2蛋白及HO-1蛋白水平均显著升高(图2a, c, f)

细胞ROS水平明显降低,抗氧化酶GSH-Px和SOD活性显著增强

免疫荧光验证显示:Nrf2荧光强度在TP53INP2敲低后显著增强(图2g-h),而NF-κB荧光信号明显减弱(图2i-j),从亚细胞定位层面证实了通路调控关系。

体内验证:裸鼠移植瘤模型

图3:敲低TP53INP2增加免疫细胞数量(a-d)、抑制肿瘤生长(e-g)、促进凋亡(h-k)、抑制EMT(l-p)、缓解氧化应激(q-t)、调控NF-κB/Nrf2/HO-1通路(u-z)

研究通过裸鼠皮下移植瘤实验进行了充分验证:

  • 肿瘤生长:si-TP53INP2组肿瘤体积显著缩小、重量明显减轻(图3e-g)

  • 增殖与凋亡:Ki67阳性率降低(图3h-i),TUNEL阳性率升高(图3j-k)

  • 免疫微环境:嗜酸性粒细胞、淋巴细胞和巨噬细胞数量均显著增加(图3a-d)

  • EMT与氧化应激:E-cadherin升高,N-cadherin、vimentin、snail1降低(图5l-p);GSH-Px、SOD活性升高,ROS水平降低(图3q-t)

  • 通路蛋白:NF-κB/Nrf2/HO-1通路相关蛋白水平发生相应逆转(图3u-z)

临床启示与未来展望

本研究的核心价值:

靶点确认:首次证实TP53INP2是脊髓胶质瘤的潜在致癌基因,为其作为治疗靶点提供了实验依据。

通路阐明:揭示了TP53INP2通过抑制Nrf2/HO-1抗氧化通路、激活NF-κB炎症信号促进肿瘤进展的分子机制。

治疗策略:为开发针对TP53INP2/NF-κB/Nrf2/HO-1轴的SCG靶向治疗方案提供了新思路。

作者客观指出,本研究为初步机制探索,TP53INP2调控该通路的直接分子互作关系仍需进一步深入研究,临床样本的验证也是后续转化医学研究的重要方向。

引用格式

Huang J, Pan Z, Yu L, Zhou Y, Zhu X, Wang Y,et al. The anti-cancer role of tumor protein p53-inducible nuclear protein2/nuclear factor-KB/nuclear factor erythroid 2-related factor 2/hemeoxygenase-1 pathway in spinal cord glioma. CytoJournal. 2025;22:87.doi: 10.25259/Cytojournal_13_2025

作者信息

祝新根 主任医师、二级教授、博士研究生导师,博士后合作导师。

研究方向:在脑胶质瘤的发生、发展、治疗等恶性生物学表型的分子调控机理研究工作中取得了一系列原创性成果。

国家级人才 、获得全国优秀共产党员、全国抗击新冠肺炎疫情先进个人、全国卫生健康系统新冠肺炎疫情防控工作先进个人;第四届“白求恩式好医生”获得者、“中国好医生”获得者、北京冬奥会火炬手、江西省卫生健康突出贡献中青年专家等荣誉。

其研究成果已被引用超过 2,900次,h-index 为 30,共发表了 160多篇 学术论文 。

欢迎投稿

投稿网址:https://editorialassist.com/#/login/cytojournal

官方网址:https://cytojournal.com/

联络邮箱:

lily.commissioning.editor@cytojournal.org

扫码进入期刊主页

获得更多期刊资讯

CytoJournal是一本开放获取、同行评审的生物医学期刊,2024年的IF值为3.1,JCR分区为病理学Q2区。致力于发表细胞病理学和分子病理学的研究。

征稿范围包括但不限于诊断细胞病理学,细胞水平的分子机制病理研究,动物疾病细胞模型或临床细胞样本的相关疾病预测,诊断和分类。从细胞水平上研究癌症及其他相关疾病的发生机制,潜在治疗靶点和异常病理特征等文章。

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  1. CONNECT:[ UseTime:0.000481s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000732s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.008377s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.007762s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000657s ]
  6. SELECT * FROM `set` [ RunTime:0.000234s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000603s ]
  8. SELECT * FROM `article` WHERE `id` = 520806 LIMIT 1 [ RunTime:0.046632s ]
  9. UPDATE `article` SET `lasttime` = 1780499571 WHERE `id` = 520806 [ RunTime:0.001394s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.004490s ]
  11. SELECT * FROM `article` WHERE `id` < 520806 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000511s ]
  12. SELECT * FROM `article` WHERE `id` > 520806 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000408s ]
  13. SELECT * FROM `article` WHERE `id` < 520806 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.019054s ]
  14. SELECT * FROM `article` WHERE `id` < 520806 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002168s ]
  15. SELECT * FROM `article` WHERE `id` < 520806 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.113740s ]
0.307825s