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郑州大学国自然青年基金结题思路,IL‑17F:免疫抑制人群种植体骨结合的全新调控靶点

  • 2026-06-08 11:28:04
郑州大学国自然青年基金结题思路,IL‑17F:免疫抑制人群种植体骨结合的全新调控靶点

导读

国家自然科学基金结题报告

免疫抑制人群因骨改建受损、种植体骨结合不良,一直是口腔种植临床的难点。郑州大学依托国家自然科学基金项目,首次揭示IL‑17F 通过调控骨代谢与成骨分化,显著改善免疫抑制状态下的骨改建与种植体骨结合,为高危人群种植修复提供了新机制与新靶点。

研 究 背 景 

种植义齿已成为缺牙修复的首选方案,但免疫抑制人群(器官移植、自身免疫病、长期服用免疫抑制剂等)的种植治疗面临巨大挑战。免疫抑制会显著抑制骨改建、延缓骨愈合,导致种植体骨结合率下降、修复失败风险升高。

既往研究提示,炎症因子与骨代谢密切相关,其中IL‑17F在正常生理状态下可促进骨折愈合,并能调控C/EBPβ协同Runx2参与成骨分化。然而,IL‑17F 能否逆转免疫抑制造成的骨愈合障碍、提升种植体骨结合,尚未得到系统验证。

在此背景下,郑州大学承担国家自然科学基金青年项目,围绕IL‑17F/C/EBPβ通路,开展免疫抑制条件下骨改建与种植体骨结合的机制研究,为临床突破治疗瓶颈提供实验依据。

内 容 简 介

成功构建并鉴定免疫抑制小鼠模型

研究团队通过连续给予 FK506 2 周,成功建立稳定免疫抑制模型。模型小鼠表现为精神萎靡、脏器指数降低;流式细胞术显示外周血CD4+/CD8+T 细胞比例显著下降,脾脏 T 淋巴细胞增殖能力明显受抑,从器官、细胞与功能层面完成模型验证。

IL‑17F 显著改善免疫抑制小鼠骨改建

Micro‑CT 与组织学结果一致证实:免疫抑制小鼠骨矿化密度、骨体积分数、骨小梁数量显著降低,呈现骨质疏松样改变。

给予外源性 IL‑17F后,松质骨骨量明显回升,骨小梁结构更致密有序。血清学检测显示,骨形成标志物PINP 显著升高,骨吸收标志物CTX 显著下降,表明 IL‑17F 可正向调控骨代谢、增强骨形成、抑制骨吸收,有效缓解免疫抑制导致的骨流失。

IL‑17F 明显提升种植体骨结合率与结合强度

团队建立小鼠股骨种植体模型,通过硬组织切片、骨结合率(BIC)定量与生物力学推出实验评估修复效果。

结果显示:免疫抑制组种植体周围骨接触少、结合力弱,推出力仅14.46±0.99N;经 IL‑17F 干预后,种植体骨结合率显著提高,推出力回升至18.70±0.64N。qPCR 检测进一步证实,成骨关键因子Runx2、Opn、Col‑I表达上调,提示 IL‑17F 可通过促进成骨分化改善骨结合。

分子机制初步指向 C/EBPβ 通路

项目按计划探索 IL‑17F 下游靶点,证实 IL‑17F 可调控C/EBPβ表达,并协同 Runx2 促进成骨。目前体外细胞学实验与在 vivo 验证仍在推进,将进一步完善 IL‑17F 调控成骨的分子网络。

结 论 

IL‑17F 可有效逆转免疫抑制导致的骨改建障碍,提升骨量与骨质量;

外源性 IL‑17F 能显著促进免疫抑制小鼠钛种植体骨结合,提高结合率与力学强度;

IL‑17F/C/EBPβ/Runx2是调控免疫抑制状态下成骨分化的重要通路。

该成果为免疫抑制人群口腔种植修复提供了全新治疗靶点与实验基础,未来有望通过 IL‑17F 相关干预策略,降低高危患者种植失败率,推动复杂条件下种植治疗的精准化与安全化。

展示仅供学习使用!

本文中使用的图片来国家自然科学基金结题报告,因客观原因未能与权利人取得联系。本平台出于学术交流目的引用,无意侵犯原作者权益。如权利人认为不妥,请及时联系公众号后台,我们将立即删除或协商解决。

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  1. CONNECT:[ UseTime:0.000592s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000772s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000308s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000288s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000512s ]
  6. SELECT * FROM `set` [ RunTime:0.000213s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000563s ]
  8. SELECT * FROM `article` WHERE `id` = 550575 LIMIT 1 [ RunTime:0.000409s ]
  9. UPDATE `article` SET `lasttime` = 1781273879 WHERE `id` = 550575 [ RunTime:0.001384s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000215s ]
  11. SELECT * FROM `article` WHERE `id` < 550575 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000433s ]
  12. SELECT * FROM `article` WHERE `id` > 550575 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000464s ]
  13. SELECT * FROM `article` WHERE `id` < 550575 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000997s ]
  14. SELECT * FROM `article` WHERE `id` < 550575 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001541s ]
  15. SELECT * FROM `article` WHERE `id` < 550575 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000600s ]
0.082673s