吉林大学学报(医学版) ›› 2021, Vol. 47 ›› Issue (1): 66-72.doi: 10.13481/j.1671-587x.20210109

• 基础研究 • 上一篇    下一篇

人早幼粒细胞cDNA文库中与GINS2发生相互作用靶蛋白的筛选和鉴定

张曦1,潘玉卿2,余鑫1,郑亚婷1,郭成斌1,徐娜1,王良晓1,何亮1(),杨丽1()   

  1. 1.云南省肿瘤医院 昆明医科大学第三附属医院检验科,云南 昆明 650118
    2.昆明医科大学第一 附属医院检验科 云南省实验诊断研究所 云南省检验医学重点实验室,云南 昆明 650032
  • 收稿日期:2020-06-07 出版日期:2021-01-28 发布日期:2021-01-27
  • 通讯作者: 何亮,杨丽 E-mail:2464606392@qq.com;mrzhh@foxmail.com
  • 作者简介:张 曦(1986-),男,云南省昆明市人,主管检验师,医学硕士,主要从事肿瘤分子机制方面的研究。
  • 基金资助:
    国家癌症中心肿瘤科研专项基金项目(NCC2017A33);云南省科技厅-昆明医科大学联合专项基金项目(2018FE001-248)

Screening and identification of target proteins interacting with GINS2 in human promyelocytic leukemia cDNA library

Xi ZHANG1,Yuqing PAN2,Xin YU1,Yating ZHENG1,Chengbin GUO1,Na XU1,Liangxiao WANG1,Liang HE1(),Li YANG1()   

  1. 1.Department of Clinical Laboratory,Caner Hospital of Yunnan Province,Third Affiliated Hospital,Kunming Medical University,Kunming 650118,China
    2.Department of Clinical Laboratory,First Affiliated Hospital,Kunming Medical University,Yunnan Institute of Experimental Diagnosis,Yunnan Key Laboratory of Laboratory Medicine,Kunming 650032,China
  • Received:2020-06-07 Online:2021-01-28 Published:2021-01-27
  • Contact: Liang HE,Li YANG E-mail:2464606392@qq.com;mrzhh@foxmail.com

摘要: 目的

采用酵母双杂交系统筛选与人GINS2 编码蛋白发生相互作用的靶蛋白,阐明其在急性早幼粒细胞白血病(APL)中的致病信号及相关机制。

方法

采用热激法将诱饵质粒pGBKT7-GINS2与人早幼粒细胞cDNA文库质粒共同转化至酵母AH109感受态细胞中,筛选与GINS2编码蛋白相互作用的文库蛋白。利用多重报告基因检测和DNA测序对编码互作蛋白的阳性克隆进行生物信息学分析。

结果

成功从文库中筛选到15个初始阳性克隆,其中10个能激活腺苷酸琥珀酸合成酶2(ADE2)和组氨醇氨基盐转移酶3(HIS3)报告基因,13个能激活β-半乳糖苷酶(LacZ)报告基因。对10个能在SD/-Trp/-Leu/-His/-Ade培养基中生长的阳性克隆行DNA测序和基本局部比对搜索工具(BLAST)比对分析后,除8和9号测序失败,其余8个阳性克隆分属8种不同的蛋白编码基因,分别是RNA结合基序蛋白39(RBM39)、泛素样修饰因子激活酶1(UBA1)、金属硫蛋白2 (MT2A)、线粒体钙离子摄入蛋白1(MICU1)、N-乙基马来酰亚胺敏感性融合蛋白辅因子(NSFL1C)、脂肪酰基辅酶a还原酶1(FAR1)、双特异性磷酸酶1(DUSP1)和细胞表面抗原14(CD14)。

结论

成功筛选到与GINS2发生相互作用的8个功能蛋白,推测目的蛋白可能在细胞损伤、转录调控和增殖代谢等方面发挥重要作用。

关键词: 白血病, 人早幼粒细胞cDNA文库, 酵母双杂交, GINS2

Abstract:

Objective: To screen the target proteins interacting with human GINS2(go-ichi-ni-san) by yeast two hybrid system, and to elucidate its pathogenesis in acute promyelocytic leukemia (APL) and related mechanism.

Methods

The constructed bait plasmid pGBKT7-GINS2 and human promyelocyte cDNA library plasmids were simultaneously transformed into the yeast AH109 cells by heat shock method to select the library proteins interacting with GINS2 coding proteins. Then, multiple reporter positive clones detection and DNA sequencing were used for bioinformatics analysis of the genes encoding the interacting proteins.

Results

A total of 15 initial positive clones were successfully screened from the yeast two hybrid library, among which 10 clones could activate ADE2 and HIS3 reporter genes,and 13 clones could activate LacZ reporter gene. After DNA sequencing and BLAST analysis of 10 positive clones which could grow in SD/-Trp/-Leu/-His/-Ade defective culture medium were performed, except for the sequencing failure of No. 8 and No. 9, the remaining 8 positive clones belonged to the eight different protein-coding genes, namely RNA binding motif protein 39(RBM39), ubiquitin like modifier activating enzyme 1(UBA1),metallothionein 2A (MT2A),mitochondrial calcium uptake 1(MICU1),N-ethylmaleimide sensitive fusion protein cofactor 1(NSFL1C), fatty acyl-CoA reductase 1(FAR1), dual specificity phosphatase 1(DUSP1) and cell surface antigen 14(CD14).

Conclusion

A total of eight functional proteins that interact with GINS2 are successfully screened, and it is speculated that the target proteins may play an important role in cell damage, transcriptional regulation, proliferation and metabolism.

Key words: leukemia, human promyelocytic cDNA library, yeast two hybrid, GINS2

中图分类号: 

  • R733.7