癌变·畸变·突变 ›› 2022, Vol. 34 ›› Issue (6): 439-444.doi: 10.3969/j.issn.1004-616x.2022.06.006

• 论著 • 上一篇    

大细胞肺癌移植瘤组织中HIF-1α、VEGF、Ki67、血清蛋白的表达及其与功能性血管数目的关系

吴宝1, 白玉勤2, 李丹丹2, 杨占民2, 孔凡龙3   

  1. 1. 赤峰学院基础医学院组织胚胎学教研室, 内蒙古 赤峰 024000;
    2. 赤峰市肿瘤医院/赤峰学院第二附属医院病理科, 内蒙古 赤峰 024000;
    3. 锦州医科大学, 辽宁 锦州 121000
  • 收稿日期:2022-02-27 修回日期:2022-06-30 发布日期:2022-12-03
  • 通讯作者: 白玉勤
  • 作者简介:吴宝,E-mail:wbxw666@163.com。
  • 基金资助:
    内蒙古自治区高等学校科学研究项目(NJZZ18202,NJZY22178)

Expression of HIF-1α, VEGF, Ki67 and serum proteins in large-cell lung cancer cell line xenografts and their relationship with numbers of functional blood vessels

WU Bao1, BAI Yuqin2, LI Dandan2, YANG Zhanmin2, KONG Fanlong3   

  1. 1. Department of Histology and Embryology, Medical College of Chifeng University, Chifeng 024000;
    2. Department of Pathology, Chifeng Tumor Hospital/Second Affiliated Hospital of Chifeng University, Chifeng 024000, Inner Mongolia;
    3. Jinzhou Medical University, Jinzhou 121000, Liaoning, China
  • Received:2022-02-27 Revised:2022-06-30 Published:2022-12-03

摘要: 目的:研究大细胞肺癌(LCLC)Lu65和Lu99细胞株裸鼠移植瘤组织中缺氧诱导因子-1α(HIF-1α)、血管内皮生长因子(VEGF)、Ki67以及血清蛋白Albumin、IgG1、IgM的表达,及其与功能性血管数目的关系。方法:将大细胞肺癌Lu65和Lu99细胞注射至裸鼠背部皮下建立异种移植模型,利用活体冷冻技术(IVCT)制备标本,免疫组织化学法分析移植瘤侵袭组织中HIF-1α、VEGF、Ki67和血清蛋白(Albumin、IgG1、IgM)的表达,根据血管周围细胞外基质内IgM蛋白的表达情况区分功能性血管和非功能性血管并分别计数,采用t检验、[χ2]检验及Spearman秩相关分析进行统计学分析。结果:Lu65移植瘤中可见少数肿瘤细胞核中有HIF-1α蛋白表达,Lu99移植瘤细胞核中未见HIF-1α蛋白表达,二者差异有统计学意义(P<0.05);两种移植瘤组织中VEGF和Ki67蛋白均呈高表达。HIF-1α蛋白表达水平与VEGF和Ki67蛋白无明显相关(P>0.05)。Lu65和Lu99移植瘤组织内功能性血管数目高于非功能性血管(P<0.05)。结论:Lu65和Lu99移植瘤组织中HIF-1α蛋白表达水平与VEGF、Ki67蛋白无明显相关,与细胞异质性有关。IVCT技术制备的组织标本可区分功能性血管与非功能性血管,Lu65和Lu99移植瘤组织中功能性血管数目高于非功能性血管,血清蛋白能否透过血管壁可能与其相对分子质量和血管结构有关。

关键词: 大细胞肺癌, 移植瘤组织, 活体冷冻技术, 缺氧诱导因子-1α, 功能性血管

Abstract: OBJECTIVE:To investigate expression of hypoxia-inducible factor-1α (HIF-1α),vascular endothelial growth factor (VEGF),Ki67,serum protein albumin,IgG1 and IgM,and their relationship with numbers of functional blood vessels in large-cell lung cancer (LCLC) Lu65 and Lu99 cell line xenografts in nude mice. METHODS:The LCLC cells were injected subcutaneously into the back of nude mice to establish a xenograft model,and the in vivo specimens were prepared by cryotechnique (IVCT). Protein (albumin,IgG1,IgM) protein expressions were determined. According to the expression of IgM protein in the extracellular matrix around blood vessels,the number of functional blood vessels and non-functional blood vessels were distinguished and counted. t test,[χ2] test and Spearman rank correlation analyses were used for statistical evaluations. RESULTS:Expression of HIF-1α protein was found in a few tumor cell nuclei in the Lu65 but not in the Lu99 xenograft tumors and the difference was statistically significant (P<0.05). Both VEGF and Ki67 proteins were highly expressed in the tumors. The expression levels of HIF-1α protein were not significantly correlated with the VEGF and Ki67 proteins. The numbers of functional blood vessels in Lu65 and Lu99 tumors were higher than that of non-functional blood vessels (P<0.05). CONCLUSION:The expression levels of HIF-1α protein in the Lu65 and Lu99 tumors had no significant correlation with the VEGF and Ki67 proteins but were related to cellular heterogeneity. On the other hand,the IVCT technology was useful in distinguishing functional from non-functional blood vessels. The numbers of functional blood vessels in both Lu65 and Lu99 tumors were higher than that of non-functional blood vessels. Whether serum proteins were capable of penetrating blood vessel walls may be related to their molecular weights and structures of blood vessels.

Key words: large cell lung cancer, xenograft modeltissues, in vivo cryotechnique, hypoxia-inducible factor-1α protein, functional blood vessels

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