Expression and clinical significance of IBP and p53 in gastric adenocarcinoma

Xia KANG; Hanxiang SONG; Qiaonan GUO

doi:10.16016/j.1000-5404.201808026

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Expression and clinical significance of IBP and p53 in gastric adenocarcinoma

更新时间：2026-02-12

- Expression and clinical significance of IBP and p53 in gastric adenocarcinoma
- Journal of Third Military Medical University Vol. 41, Issue 3, Pages: 219-226(2019)
- 作者机构：
  
  400037 重庆，陆军军医大学(第三军医大学)第二附属医院病理科Department of Pathology, Second Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, 400037, China
- 作者简介：
- 基金信息：
- DOI：10.16016/j.1000-5404.201808026
  CLC： R341;R730.23;R735.2
- Received：05 August 2018，
  
  Published：15 February 2019
- 稿件说明：
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Xia KANG, Hanxiang SONG, Qiaonan GUO. Expression and clinical significance of IBP and p53 in gastric adenocarcinoma[J]. Journal of Third Military Medical University, 2019, 41(3): 219-226.
DOI：

Xia KANG, Hanxiang SONG, Qiaonan GUO. Expression and clinical significance of IBP and p53 in gastric adenocarcinoma[J]. Journal of Third Military Medical University, 2019, 41(3): 219-226. DOI： 10.16016/j.1000-5404.201808026.

摘要

目的

探讨干扰素调节因子4结合蛋白(IRF-4 binding protein，IBP)在胃腺癌细胞及临床病理组织中的表达、与p53蛋白表达的相关性及临床意义。

方法

通过免疫荧光、Real-time PCR和Western blot检测胃腺癌细胞株MKN-45、SGC-7901中IBP的表达情况；收集2015-2016年在本科确诊的胃腺癌HE切片对应存档蜡块150例，采用免疫组化EnVision法检测并标记IBP在150例胃腺癌标本中的表达，并检测突变型p53蛋白的表达，分析IBP在胃腺癌组织中的表达及其与胃腺癌各临床病理资料因子相应的关系，采用Spearman等级相关分析IBP与p53蛋白表达的相关性。

结果

免疫荧光检测显示IBP主要表达在胃腺癌细胞株MKN-45的胞质和胞膜中，主要以胞膜表达为主。Western blot及Real-time PCR均证实胃腺癌细胞株MKN-45、SGC-7901中均有IBP的表达，且在MKN-45细胞中的表达高于SGC-7901细胞(

0.05)。在胃腺癌组织中，IBP的阳性表达率显著高于正常胃黏膜组织(

0.01)；p53蛋白的阳性表达率也显著高于正常胃黏膜组织(

0.01)；IBP阳性表达与病理分级呈正相关(

0.05)，与患者年龄、性别、胃壁浸润深度、TNM分期、Lauren分型及肿瘤部位无相关性(

0.05)；p53蛋白的阳性表达与患者的年龄、性别、病理分级、Lauren分型具有相关性(

0.05)，与患者胃壁浸润深度、TNM分期及肿瘤部位无相关性(

0.05)；在胃腺癌中IBP与p53蛋白表达没有显著的相关关系(

=0.013，

0.05)。

结论

IBP在胃腺癌细胞株及临床病理组织中高表达，主要表达于胞膜、胞质；p53蛋白在胃腺癌临床病理组织中高表达，主要表达于胞核；IBP在胃腺癌组织中高表达与患者病理分级正相关，在胃腺癌组织中IBP与p53蛋白没有明显的相关关系。

Abstract

Objective

To investigate the expression of IRF-4 binding protein (IBP) in gastric adenocarcinoma

and explore its correlation with p53 expression and clinical significance.

Methods

The expression of IBP in gastric adenocarcinoma cell lines MKN-45 and SGC-7901 was detected with immunofluorescence assay

real-time PCR and Western blotting. Immunohistochemical staining with the aid of EnVision system was used to detect and mark the expression of IBP in 150 cases of gastric adenocarcinoma identified in our department from 2015 to 2016. The expression of mutant p53 protein was also detected. The expression of IBP in gastric adenocarcinoma and its relationship with the clinical pathological data were analyzed

and the correlation between IBP and p53 expression was tested by Spearman grade correlation analysis.

Results

Immunofluorescence assay showed that IBP was expressed in the cytoplasm and membrane of the MKN-45 cells

mainly in the latter. Western blotting and real-time PCR confirmed that IBP was expressed in the MKN-45 and SGC-7901 cells

and the expression level was significantly higher in the former than the latter cells (

0.05). The positive expression rate of IBP was obviously higher in the gastric adenocarcinoma tissues than the adjace

nt normal tissues (

0.01)

so was that of p53 (

0.01). The positive expression of IBP was positively correlated with pathological grade (

0.05)

but not with the patient's age

gender

gastric wall invasion depth

TNM stage

Lauren type or tumor site (

0.05). The positive expression of p53 was correlated with age

sex

pathological grade

and Lauren type (

0.05)

but not with depth of gastric wall invasion

TNM stage or tumor site (

0.05). No significant correlation was seen between the expression of IBP and p53 in gastric adenocarcinoma (

=0.013

0.05).

Conclusion

IBP is highly expressed in the gastric adenocarcinoma cell lines and gastric adenocarcinoma tissues

mainly in the cytoplasm and membrane

and p53 protein was highly expressed in the tumor tissues

mainly in the nucleus. The high expression of IBP in gastric adenocarcinoma is positively correlated with pathological grade

and there was no significant correlation between their expression.

关键词

Keywords

references

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