Identification of Genetic Associations of SP110/MYBBP1A/RELA With
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Hum Genet (2013) 132:265–273 DOI 10.1007/s00439-012-1244-5 ORIGINAL INVESTIGATION Identification of genetic associations of SP110/MYBBP1A/RELA with pulmonary tuberculosis in the Chinese Han population Lei Cai • Shao-Li Deng • Li Liang • Hui Pan • Jia Zhou • Mei-Yan Wang • Jun Yue • Chun-Ling Wan • Guang He • Lin He Received: 18 June 2012 / Accepted: 17 October 2012 / Published online: 6 November 2012 Ó Springer-Verlag Berlin Heidelberg 2012 Abstract Genetic factors play important roles in the meta-analysis of rs9061 in East Asian populations showed development of tuberculosis (TB). SP110 is a promising that the rs9061 T allele conferred significant risk for TB candidate target for controlling TB infections. However, [P = 0.002, pooled odds ratio (OR), 1.24, 95 % confidence several studies associating SP110 single nucleotide poly- interval (CI) = 1.08–1.43]. The MYBBP1A GTCTTGGG morphisms (SNPs) with TB have yielded conflicting haplotype and haplotypes CGACCG/TGATTG within results. This may be partly resolved by studying other SP110 were found to be markedly and significantly asso- genes associated with SP110, such as MYBBP1A and ciated with TB (P = 2.00E-06, 5.00E-6 and 2.59E-4, RELA. Here, we genotyped 6 SP110 SNPs, 8 MYBBP1A respectively). Gene-based analysis also demonstrated that SNPs and 5 RELA SNPs in 702 Chinese pulmonary TB SP110 and MYBBP1A were each associated with TB patients and 425 healthy subjects using MassARRAY and (Pcor = 0.011 and 0.035, respectively). The logistic SNaPshot methods. Using SNP-based analysis with Bon- regression analysis results supported interactions between ferroni correction, rs3809849 in MYBBP1A [Pcorrected SP110 and MYBBP1A, indicating that subjects carrying a (cor) = 0.0038] and rs9061 in SP110 (Pcor = 0.019) were GC/CC genotype in MYBBP1A and CC genotype in SP110 found to be significantly associated with TB. Furthermore, possessed the high risk of developing TB (P = 1.74E-12). Our study suggests that a combination of SP110 and MYBBP1A gene polymorphisms may serve as a novel Electronic supplementary material The online version of this article (doi:10.1007/s00439-012-1244-5) contains supplementary material, which is available to authorized users. L. Cai (&) Á C.-L. Wan Á G. He Á L. He L. Liang Á J. Yue (&) Bio-X Center, Key Laboratory for the Genetics Shanghai Key Laboratory of Mycobacterium Tuberculosis, of Developmental and Neuropsychiatric Disorders Shanghai Pulmonary Hospital, Tongji University School (Ministry of Education), Shanghai Jiaotong University, of Medicine, 507 Zhengmin Rd, Shanghai 200433, China 800 Dongchuan Road, Shanghai 200030, China e-mail: [email protected] e-mail: [email protected] H. Pan L. Cai Á J. Zhou Department of Immunology and Infectious Diseases, Gordon Life Science Institute, 13784 Torrey Del Mar Drive, Harvard School of Public Health, Boston, USA San Diego, CA 92130, USA M.-Y. Wang L. Cai Á J. Zhou Fudan University School of Life Sciences and Technology, Key Laboratory of Systems Biomedicine, Advanced Institute of Translational Medicine, Shanghai, China Shanghai Centre for Systems Biomedicine, Shanghai Jiaotong University, Shanghai, China S.-L. Deng Department of Laboratory Medicine, Institute of Surgery Research, Daping Hospital, The Third Military Medical University, Chongqing, China 123 266 Hum Genet (2013) 132:265–273 marker for identifying the risk of developing TB in the structurally related inducible transcription factors (Bonizzi Chinese Han population. and Karin 2004). NF-jB, which is known to interact with IFN-c during TB development, regulates the expression of a wide variety of human genes, including factors regulating Introduction apoptosis and inducers of proliferation (Chan et al. 2001; Pahl 1999). Tuberculosis (TB) is a re-emerging disease epidemic in This study aimed to determine whether any genetic many parts of the world. As of 2010, China has the second- associations exist between SP110/MYBBP1A/RELA and largest number of incident cases worldwide (WHO 2011). pulmonary TB. We performed multiple analyses including Despite the availability of effective treatment over the past SNP-based, haplotype-based and gene-based analyses on an few decades, TB remains the second leading cause of association study using 1,127 Chinese subjects. The SNP- deaths from infectious diseases worldwide (WHO 2011). based analysis results were further evaluated using meta- Multiple factors contribute to the risk of infection and analysis and protein 3D structure analysis. The logistic development of TB, including host–pathogen interactions regression analysis was performed to evaluate the gene– and environmental factors. Furthermore, there is evidence gene interaction. Our work suggests a combination of SP110 to indicate that the risk of developing TB in human is and MYBBP1A gene polymorphisms is significantly asso- strongly influenced by genetic factors (Bellamy 2003; ciated with TB, which provides an effective novel bio- Cooke and Hill 2001). marker for TB susceptibility in the Chinese Han population. SP110 is emerging as a promising candidate for its mouse homologue controlling Mycobacterium tuberculosis (MTB) infections (Pan et al. 2005). SP110 contains Materials and methods nuclear-characterized structural motifs, such as the chro- matin-interacting SAND domain and the LXXLL nuclear Study subjects hormone interaction motif. Following induction by inter- feron-a and interferon-c, SP110 is preferentially expressed Patients with TB were recruited from Shanghai Pulmonary in leukocytes and spleen cells (Bloch et al. 2000). The Hospital and Chongqing Daping Hospital in southern mouse homologue of SP110 has been found to be strongly China between June 2009 and September 2011. All patients expressed in lung lesions from TB and macrophages of were clinically and radiologically diagnosed with pul- susceptibility to tuberculosis 1 (sst1)-resistant mice, but not monary TB; sputum smears and cultures were used to expressed in sst1-susceptible mice. Moreover, mouse confirm M. tuberculosis infection. All patients were HIV- SP110 has the ability to control MTB growth in macro- negative and none presented with other infectious diseases phages and induce apoptosis in infected macrophage cells or immunosuppressive conditions. The characteristics of (Pan et al. 2005). study subjects were listed in Table 1. Healthy control Several SNP-based studies have reported associations subjects were recruited from blood donors, who had neg- between SP110 and susceptibility to pulmonary TB in ative tuberculin skin tests with indurations of \5mmon different populations, however, these have yielded con- the fourth day after inoculation, no history of TB and no flicting results (Babb et al. 2007; Cong et al. 2010; Liang evidence of prior TB noted in chest radiographies. Both et al. 2011; Png et al. 2012; Szeszko et al. 2007; Tosh et al. cases and controls were selected with following procedures 2006). We note that inconsistencies arising from popula- to exclude the possibility of immunosuppressive condi- tion differences are more readily resolved by use of a gene- tions. Firstly, they were investigated that they had no his- based or multi-gene-based approach rather than using tory of an immunosuppressive condition (i.e., human either a SNP-based or a haplotype-based approach (Neale immunodeficiency virus (HIV) infection, leukemia, lym- and Sham 2004). Thus, these conflicting results may be phoma, diabetes mellitus, or renal failure) or of taking partly resolved by studying other genes associated with immunosuppressive drugs within the last 3 months. Sec- SP110, such as MYBBP1A and RELA, which have not been ondly, HIV antibody and CD4? cell counts were assessed investigated in previous works. MYBBP1A has been to exclude HIV infection. Thirdly, these CD3?, CD4? and reported to bind with SP110 in mice, and it has been CD8? cell counts were assessed to exclude cell immune demonstrated that SP110 induces cells apoptosis by inter- deficiency. Finally, measurements of quantitative immu- acting with MYBBP1A (Cai et al. 2010). MYBBP1A is a noglobulin levels, including IgG, IgA, and IgM, and transcription factor critical for hematopoietic cell proli- complement levels were used to exclude antibody and feration and differentiation and is involved in the NF-jB complement deficiency. Informed consent was obtained pathway through its ability to bind with RELA (Owen et al. from all TB patients and controls participating in this 2007). RELA is a member of the NF-jB family of study. This study protocol was approved by the Ethics 123 Hum Genet (2013) 132:265–273 267 Table 1 Characteristics of subjects in this study using 5.4 pmol of each primer extension probe, 50 mmol Characteristics Cases Controls of iPlex Termination Mix, and 0.5 U of iPLEX enzyme (Sequenom). The extension reactions were carried out at Number 702 425 94 °C for 30 s and then 94 °C for 5 s, followed by 5 cycles at Age, mean ± SD (years) 40.0 ± 15.6 41.2 ± 17.7 52 °C for 5 s and 80 °C for 5 s for a total of 40 cycles and Male (%) 68.2 66.7 finally at 72 °C for 3 min. Purified extension reaction prod- Number of patients with/without fever 254/448 ucts with cation exchange resin were spotted onto Spectro- Number of patients with cavities in 369 CHIPs and determined by MALDI-TOF mass spectrometry. chest radiograph The SNP rs9061 and two other SNPs (rs11556887 and SD standard deviation rs1135791) investigated to evaluate the genotyping above were studied using the SNaPshot Kit (Applied Biosystems, Committee of Shanghai Pulmonary Hospital and Chongq- Inc.).