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中华临床医师杂志(电子版) ›› 2018, Vol. 12 ›› Issue (12) : 684 -687. doi: 10.3877/cma.j.issn.1674-0785.2018.12.007

所属专题: 文献

基础研究

p53基因变异的B细胞淋巴瘤小鼠甘氨酸脱羧酶表达研究
孙涛1, 李向东1,(), 刘鹏1, 刘峰1, 李硕敏1   
  1. 1. 250014 济南,山东大学附属千佛山医院检验科
  • 收稿日期:2018-03-11 出版日期:2018-06-15
  • 通信作者: 李向东
  • 基金资助:
    山东省医药卫生科技发展计划项目(2017WS714)

Expression of glycine decarboxylase in p53-mutated B cell lymphoma in mice

Tao Sun1, Xiangdong Li1,(), Peng Liu1, Feng Liu1, Shuomin Li1   

  1. 1. Department of Clinical Laboratory, Shandong University Affiliated Qianfoshan Hospital, Jinnan 250014, China
  • Received:2018-03-11 Published:2018-06-15
  • Corresponding author: Xiangdong Li
  • About author:
    Corresponding author: Li Xiangdong, Email:
引用本文:

孙涛, 李向东, 刘鹏, 刘峰, 李硕敏. p53基因变异的B细胞淋巴瘤小鼠甘氨酸脱羧酶表达研究[J]. 中华临床医师杂志(电子版), 2018, 12(12): 684-687.

Tao Sun, Xiangdong Li, Peng Liu, Feng Liu, Shuomin Li. Expression of glycine decarboxylase in p53-mutated B cell lymphoma in mice[J]. Chinese Journal of Clinicians(Electronic Edition), 2018, 12(12): 684-687.

目的

了解p53基因变异和B细胞淋巴瘤甘氨酸脱羧酶(GLDC)表达的关系。

方法

基于免疫组化染色结果,BALB/c裸鼠分为p53蛋白阳性组和p53蛋白阴性组。采用实时荧光定量PCR检测B细胞淋巴瘤组织甘氨酸脱羧酶mRNA表达,采用免疫印迹实验检测B细胞淋巴瘤组织甘氨酸脱羧酶蛋白表达。设计GLDC特异性siRNA转染人B淋巴瘤细胞系Raji细胞。采用t检验比较GLDC mRNA和GLDC蛋白表达组间的差异,并采用方差分析比较阴性对照siRNA组、空白对照组和GLDC siRNA转染组增殖能力的差异。

结果

相对于p53蛋白阴性组,p53蛋白阳性组GLDC mRNA和蛋白表达都升高,GLDC mRNA表达在p53蛋白阴性组为2.38±0.26,在p53蛋白阳性组升高到11.32±1.65,差异具有统计学意义(t=6.74,P<0.01)。相对于阴性对照siRNA组(0.61±0.06)和空白对照组(0.51±0.04),GLDC siRNA转染组(0.22±0.01)细胞增殖能力明显降低,差异具有统计学意义(t=3.74,P<0.05),

结论

p53基因变异和B细胞淋巴瘤GLDC表达有直接的关系。GLDC基因能促进p53基因变异B细胞淋巴瘤增殖。GLDC的研究可能为治疗B细胞淋巴瘤提供新的靶点。

Objective

To understand the relationship between p53-mutated B cell lymphoma and glycine decarboxylase (GLDC) expression.

Methods

Based on immunohistochemical staining results, BALB/c nude mice were divided into a p53 protein-positive group and 53 protein-negative group. GLDC mRNA expression was determined by real-time polymerase chain reaction, and GLDC protein expression was determined by Western blot. We designed a GLDC-specific siRNA to transfect human B cell lymphoma cell line (Raji). The t-test was used for statistical analyses.

Results

Both GLDC mRNA and protein expression in B cell lymphoma tissue were higher in the p53 protein-positive group than in the p53 protein-negative group, and there was a significant difference in the expression of GLDC mRNA between the two groups (2.38±0.26 vs 11.32±1.65, t=6.74, P<0.01).The proliferative ability of GLDC siRNA-transfected cells (0.22±0.01) decreased significantly compared with the negative-control siRNA group (0.61±0.06) and the blank control group (0.51±0.04) (t=3.74, P<0.05).

Conclusion

These findings support a direct relationship between p53 mutation and GLDC expression in B cell lymphoma. GLDC gene can promote cell proliferation in p53-mutated B cell lymphoma and thus may provide a new target for the treatment of B-cell lymphoma.

图1 B细胞淋巴瘤组织甘氨酸脱羧酶蛋白表达
表1 B细胞淋巴瘤组织GLDC mRNA表达和蛋白表达的组间差异(±s
图2 GLDC siRNA抑制GLDC的表达
表1 空白对照组、阴性对照siRNA组和GLDC siRNA转染组增殖能力比较(±s
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