不同内参蛋白在急性高原缺氧诱导肺损伤中的表达变化及选择
作者:
作者单位:

1.西安交通大学第一附属医院周围血管科,西安 710061;2.西安交通大学心血管研究中心,西安 710061;3.西北大学生命科学学院,陕西省创新药物研究中心,陕西省生物医药重点实验室,西安 710069;4.青海大学医学院高原医学研究中心,高原医学应用重点实验室,西宁 810001;5.西安交通大学第一附属医院健康医学科,西安 710061

作者简介:

通讯作者:

中图分类号:

R-33

基金项目:


Expression changes and selection of different internal control proteins in acute hypoxia-induced lung injury by acute high-altitude
Author:
Affiliation:

1. Department of Peripheral Vascular, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China.2. Cardiovascular Research Center, Xi’an Jiaotong University, Xi’an 710061. 3. the College of Life Sciences,Provincial Center for Research Innovative Drugs, Provincial Key Laboratory of Biomedicine, Northwest University,Xi’an 710069. 4. Key Laboratory of Plateau Medicine of Ministry of Education, Plateau Medicine Research Center,Qinghai University, Qinghai Key Laboratory of Plateau Medicine Application Foundation, Xining 810001.5. Department of Health Medicine, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    目的 应用免疫印记实验(Western blot)评价急性高原缺氧诱导肺损伤模型组织和细胞的内参蛋白变化及选择。 方法 本文应用 C57BL / 6J 小鼠置于低压低氧大舱模拟 6000 m 海拔进行缺氧 8 h、24 h和 72 h 建立高原肺损伤模型,苏木素-伊红(HE)染色明确高原肺损伤模型的成功建立;Western blot 检测内参蛋白粘着斑蛋白(vinculin)、α 微管蛋白(α-tubulin)、真核翻译起始因子 5(eukaryotic translation initiation factor5,EIF5)、β 肌动蛋白(β-actin)、甘油醛-3-磷酸脱氢酶(glyceraldehyde 3-phosphate dehydrogenase,GAPDH)的表达,并应用考马斯亮蓝染色检测总蛋白的表达。 体外实验应用支气管上皮细胞( bronchial epithelial cell,BEAS-2B)和内皮细胞(human umbilical vein endothelial cells,HUVECs)进行缺氧诱导损伤模型的建立,TUNEL染色明确细胞损伤模型的成功建立;Western blot 检测不同内参蛋白表达,并应用考马斯亮蓝染色检测总蛋白的表达。 结果 在成功建立急性高原缺氧 8 h、24 h 和 72 h 模型的基础上,总蛋白表达量一致,内参蛋白vinculin、α-tubulin、EIF5 和 β-actin 表达量一致,GAPDH 表达量在低压低氧 8 h、24 h 和 72 h 组较常氧组升高,其中低压低氧 72 h 组表达量较常氧组显著升高。 在成功建立 BEAS-2B 和 HUVECS 缺氧 8 h、24 h 和 48 h 的基础上,总蛋白表达量一致,BEAS-2B 内参蛋白 β-actin 和 GAPDH 和常氧组表达量一致,在缺氧 24 h 组vinculin、α-tubulin、EIF5 较常氧组表达明显下降;HUVCES 内参蛋白 vinculin 和 α-tubulin 和常氧组表达量一致,在缺氧 8 h 后 EIF5、β-actin 和 GAPDH 较常氧组表达明显下降,缺氧 48 h 后表达增高。 结论 急性高原缺氧诱导肺组织损伤,进行 Western blot 时内参蛋白 vinculin、α-tubulin、EIF5 和 β-actin 的表达稳定,可作为内参选择;体外应用肺组织最主要的 BEAS-2B 和 HUVECS 等细胞诱导缺氧损伤模型,Western blot 检测内参蛋白vinculin、α-tubulin、EIF5、β-actin、GAPDH 的表达量在缺氧后皆有所变化,选择总蛋白作为内参更为合适。

    Abstract:

    Objective The pathophysiological process of acute high-altitude hypoxia-induced lung injury affects protein expression levels, which are mainly evaluated by Western blot. No systematic study has investigated changes in internal control proteins as calibration loading amounts. Methods Lung injury at an altitude of 6000 m was induced in a low-pressure, low-oxygen chamber for 8, 24, and 72 h using C57BL / 6J mice. Establishment of the model was confirmed by hematoxylin and eosin staining. Expression levels of various internal control proteins,including vinculin, α-tubulin, eukaryotic translation initiation factor 5 ( EIF5), β-actin, and glyceraldehyde 3-phosphate dehydrogenase (GAPDH) were detected by Western blot, and total protein expression was detected by Coomassie blue staining. Furthermore,the lung injury model in vitro was establised by using,Bronchial epithelial cell (BZAS-2B) andhunman umbilical vein endothelial cells (HUVECS) confirmed by TUNEL staining. Expression levels of internal control proteins were detected by Western blot, and total protein expression was detected by Coomassie Blue staining. Results Acute 8, 24, and 72 h hypoxic models were successfully established in lung tissue, demonstrating consistent total protein expression and stable levels of the internal reference proteins vinculin, α-tubulin, EIF5, and β-actin. GAPDH expression was elevated in the HH8 h, HH24 h, and HH72 h groups compared with the normoxia (Nor) group, but only the increase at HH72 h groups was significant. Similarly, 8, 24, and 48 h hypoxic models were successfully established in BEAS-2B cells and HUVECs, with consistent total protein expression. In BEAS-2B cells, expression levels of the internal reference proteins β-actin and GAPDH were consistent with the normoxic control(NC)group, while vinculin, α-tubulin, and EIF5 expression levels were significantly reduced under hypoxic conditions for up to 24 h. In HUVECs, vinculin and α-tubulin expression levels were also consistent with the NC group, while EIF5, β-actin, and GAPDH expression levels were significantly reduced at 8 h and increased at 48 h. Conclusions Acute hypoxia induces lung tissue injury, and protein expression levels of the internal reference proteins vinculin, α-tubulin, EIF5, and β-actin are stable, making them suitable internal references for Western blot. Additionally, Western blot detected differential expression levels of the internal reference proteins vinculin, α-tubulin, EIF5, β-actin, and GAPDH in BEAS-2B cells and HUVECs, as the most important in vitro lung tissue models of hypoxia-induced injury.

    参考文献
    相似文献
    引证文献
引用本文

刘 佳,张小玉,张依曼,王 飞,来宝长,张 俊,乌仁塔娜,郑晓晖,田红燕,殷 倩.不同内参蛋白在急性高原缺氧诱导肺损伤中的表达变化及选择[J].中国比较医学杂志,2025,35(3):90~99,146.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2024-07-08
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2025-05-29
  • 出版日期: