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肾脏病与透析肾移植杂志 ›› 2025, Vol. 34 ›› Issue (3): 225-231.DOI: 10.3969 / j.issn.1006⁃298X.2025.03.005

• 论著 • 上一篇    下一篇

COMM 域蛋白 5 抑制慢性肾脏病患者的血管钙化

  

  • 出版日期:2025-06-28 发布日期:2025-06-26

COMM domain protein 5 inhibits in vascular calcification in patients with chronic kidney disease

  • Online:2025-06-28 Published:2025-06-26

摘要: 目的:探讨 COMM 域蛋白 5( COMMD5) 与慢性肾脏病( CKD) 患者血管钙化之间的关系。 方法: 用生物信息学方法分析 COMMD5 CKD 患者血管钙化关系,对 CKD 钙化患者及对照组进行血管环的茜素红染色及免疫组化,并用高磷刺激人主动脉平滑肌细胞( HVSMC),观察 COMMD5 表达。  在体外使用 COMMD5 小干扰RNA( SiRNA),观察Runt 相关转录因子2( RUNX2) 和α 平滑肌肌动蛋白( α⁃SMA) 及细胞骨架相关蛋白( SM22α) 的表达情况。 COMMD5 重组蛋白刺激 HVSMC,观察茜素红染色情况。 结果:生物信息学分析发现,COMMD5 与血管钙化有关,且与对照组相比, 血管钙化组 COMMD5 表达下调( P < 0.05)。 与对照组比较, CKD 血管钙化患者COMMD5 表达下调( P < 0.01)。 与对照组比较, 高磷刺激下 HVSMC COMMD5 的表达降低( P < 0.05)。 使用COMMD5 的 SiRNA 及高磷对 HVSMC 进行刺激,导致细胞中 RUNX2 表达上调,SM22α 表达下调( P<0.05)。  使用 COMMD5 重组蛋白孵育 HVSMC,较高磷组相比,COMMD5 重组蛋白加高磷组茜素红染色减少。 结论:COMMD5 通过调节平滑肌细胞转分化抑制血管钙化。

关键词: 血管钙化, COMM 域蛋白 5, 人主动脉平滑肌细胞

Abstract: Objective:To investigate the relationship between COMM domain protein 5 ( COMMD5)  and vascular calcification VC)  in patients with chronic kidney disease CKD).    Methodology:Bioinformatics analysis was conducted to explore the relationship between COMMD5 and vascular calcification in CKD patients. Vascular rings from CKD calcified patients and control groups were stained with Alizarin red and subjected to immunohistochemistry.  Human vascular smooth muscle cells ( HVSMC)  were stimulated with high phosphate to observe COMMD5 expression.  COMMD5 small interfering RNA siRNA)  was used in vitro to examine the expression levels of Runt⁃related transcription factor 2 ( RUNX2), smooth muscle antibody α⁃SMA), and cytoskeleton⁃associated protein ( SM22α). COMMD5 recombinant protein was also used to stimulate HVSMCs, and Alizarin red staining was performed to assess the effects.    Results:Bioinformatics analysis showed that COMMD5 was related to vascular  calcification, and compared with the  control  groupthe  expression of  COMMD5  in the vascular  calcification  group  was  down⁃regulated  ( P < 0.05).  Compared  with  the  normal  group,  the  expression  of COMMD5 was downregulated in patients with vascular calcification in CKD patientsP<0.01). The expression of COMMD5 in human aortic smooth muscle cells  stimulated  by  high  phosphorus  was  lower  than  that  in  the  control  group  ( P< 0.05). SiRNA of COMMD5 and high phosphorus were used to stimulate HVSMCs, resulting in up⁃regulation of RUNX2 expression and down⁃regulation of SM22α  expression  ( P < 0.05).  COMMD5  recombinant  protein  incubation  in  HVSMC  resulted  in decreased Alizarin  red  staining  in  the  high  phosphate  and  COMMD5  recombinant  protein  group  compared  to  the  high phosphate group.    Conclusion:COMMD5 is associated with vascular  calcification and alleviates  high phosphorus⁃induced calcification in HVSMC.

Key words:  vascular calcification ,  COMM domain?containing protein 5,  human vascular smooth muscle cells