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Association of Romo1 Gene Genetic Polymorphisms with Risk of Gastric Cancer in Northwestern Chinese Population

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Pathology & Oncology Research

Abstract

Increased expression of reactive oxygen species modulator 1 protein-triggered reactive oxygen species production was reported in the mitochondria of various cancer cell lines. To date there is no report on association between Romo1 gene polymorphisms and gastric cancer risk. To investigate the relationship between Romo1 gene polymorphisms and GC risk, we conducted a case-control study in a population from northwest China (358 GC patients and 412 healthy controls). The genotypes of two SNPs were determined with PCR–denaturing high-performance liquid chromatography and direct DNA sequencing. We found that the genotype and allele distributions of two polymorphisms were significantly different in GC patients compared with controls, When the wild type of two loci were served as the reference group, respectively, significantly increased risk for gastric cancer were associated with rs6060566 TC genotype (Adjusted OR = 1.525, 95 % CI =1.126–2.138), rs6060567 GC genotype (Adjusted OR = 1.641, 95 % CI =1.238–2.291) and CC genotype (Adjusted OR = 1.594, 95 % CI =1.102–2.973). This effect was more pronounced in patients with smoking, alcohol consumption, H.pylori infection,and male patients subgroups. Haplotypes analysis of two genetic variants showed that the most common haplotype TG displayed the strongest evidence of association with GC (corrected P = 9.30 × 10−5), and was associated with protection against GC (OR = 0.584). Whereas the CC haplotypes had significant correlation with GC risk (OR = 1.732). These findings suggested genetic polymorphisms of Romo1 gene were associated with significant risk of GC in Northwestern Chinese population, which is strengthened by alcohol use, smoking, H.pylori infection or male patients.

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Abbreviations

Romo1:

Reactive oxygen species modulator 1

ROS:

Reactive oxygen species

GC:

Gastric cancer

DHPLC:

Denaturing high performance liquid chromatography

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Acknowledgments

We express our appreciation to the original DNA donors who made this study possible. This work was supported by grant of National Natural Science Foundation of China (81272454), the Fundamental Research Funds for the Central Universities (lzujbky-2013–224).

Conflict of Interest

No conflicts of interest were declared in relation to this article.

Author information

Authors and Affiliations

  1. Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Science, Lanzhou University, Lanzhou, 730000, Gansu Province, China

    Hua Wu, Gang Su, Jiong Li & Xiao-dong Xie

  2. Surgical Department, People’s Hospital of Gansu Province, Lanzhou, 730000, Gansu Province, China

    Yuan-hui Gu, Li Wei & Tian-kang Guo

  3. General Hospital of Lanzhou Military Region, PLA, Lanzhou, 730050, Gansu Province, China

    Yong Zhao

Authors
  1. Hua Wu
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  2. Yuan-hui Gu
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  3. Li Wei
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  4. Tian-kang Guo
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  5. Yong Zhao
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Corresponding author

Correspondence to Xiao-dong Xie.

Additional information

Hua Wu and Yuan-hui Gu contributed equally to this article.

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Supplemental Fig. 1

DHPLC analysis of the single rs6060567 PCR products DHPLC analysis of the single rs6060567 PCR products were as follows: G/G, C/C, G/C. (GIF 85 kb)

High Resolution (TIFF 133 kb)

Supplemental Fig. 2

DHPLC analysis of the mixed rs6060567 PCR products DHPLC analysis of the mixed rs6060567 PCR products were as follows: GG+GG, CC+CC, GG+CC, GG+GC. (GIF 115 kb)

High Resolution (TIFF 176 kb)

Supplemental Fig. 3

Direct-sequencing results of rs6060566 and rs6060567 PCR products. (GIF 276 kb)

High Resolution (TIFF 612 kb)

Supplemental Fig. 4

Haplotype analysis of rs6060566/rs6060567 Haplotype analysis of rs6060566/rs6060567: D’=0.989, r2=0.670. (GIF 58 kb)

High Resolution (TIFF 90 kb)

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Wu, H., Gu, Yh., Wei, L. et al. Association of Romo1 Gene Genetic Polymorphisms with Risk of Gastric Cancer in Northwestern Chinese Population. Pathol. Oncol. Res. 21, 581–587 (2015). https://doi.org/10.1007/s12253-014-9858-7

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  • DOI: https://doi.org/10.1007/s12253-014-9858-7

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