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Year : 2013  |  Volume : 9  |  Issue : 4  |  Page : 660-663

Association between TGM5, PPAP2B and PSMA4 polymorphisms and NSCLC in never-smoking Chinese population

Department of Integration of Traditional Chinese and Western Medicine, Zhejiang cancer hospital, Hangzhou, 310022, China

Date of Web Publication11-Feb-2014

Correspondence Address:
M M Yongjun Zhang
Department of Integration of Traditional Chinese and Western Medicine, Zhejiang Cancer Hospital, 38 Banshan Road, Hangzhou 310022.
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Source of Support: University Grants Commission, New Delhi, India, Conflict of Interest: None

DOI: 10.4103/0973-1482.126473

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 > Abstract 

Aim: To explore the potential association between SNPs in transglutaminase 5 (TGM5), phosphatidic acid phosphatase type 2B (PPAP2B) and proteasome subunit, alpha type 4 (PSMA4) and non-small cell lung cancer (NSCLC) susceptibility in Chinese patients who were non-smokers.
Setting and Design: A case-controlled study was conducted among Chinese population.
Materials and Methods: Two hundred NSCLC patients and 200 healthy controls who were age and sex matched were genotyped for rs504417 of TGM5, rs1261411 of PPAP2B and rs7164594 of PSMA4. Genotyping was performed using the Sequenom MassARRAY system based on the chip-based matrix-assisted laser desorption ionization time-of-flight mass spectrometry platform.
Statistical Analysis Used: The association between genotype and lung cancer risk was evaluated by computing the odds ratio (OR) and 95% confidence interval (CI) from multivariate unconditional logistic regression analyses.
Results: There was no significant difference for the TGM5 rs504417, PPAP2B rs1261411 and PSMA4 rs716459 in allele or genotype frequencies, whether between controls and NSCLC or between controls and subgroups.
Conclusions: polymorphisms of TGM5, PPAP2B and PSMA4 are not major contributors to NSCLC susceptibility, this primarily be attributed to the significantly distinct genetic background of Asian populations from western populations.

Keywords: Chinese, genetic polymorphism, non-small cell lung cancer

How to cite this article:
Yongjun Zhang M M, Zhang A, Hua Shi M M, Xiangming Kong M M. Association between TGM5, PPAP2B and PSMA4 polymorphisms and NSCLC in never-smoking Chinese population. J Can Res Ther 2013;9:660-3

How to cite this URL:
Yongjun Zhang M M, Zhang A, Hua Shi M M, Xiangming Kong M M. Association between TGM5, PPAP2B and PSMA4 polymorphisms and NSCLC in never-smoking Chinese population. J Can Res Ther [serial online] 2013 [cited 2020 Nov 30];9:660-3. Available from: https://www.cancerjournal.net/text.asp?2013/9/4/660/126473

 > Introduction Top

The lung and bronchus cancer was the most common fatal cancer in man and woman in US. [1] The single most important factor influencing the risk of lung cancer is smoking. Although, smoking is the primary cause of lung cancer, only about 15% of lifelong smokers develop the disease. [2],[3] Furthermore, studies on lung cancer risk in family members of lung cancer probands have shown that genetic factors contribute to the risk of developing the disease. [4],[5],[6] Recently, three Genome-wide association studies reported that variants on TGM5 rs504417 (OR=0.88; P=0.0043), [7] PPAP2B rs1261411 (OR=1.65; P=0.0114) and PSMA4 rs7164594 (OR=0.73; P=0.004) were significant association with lung cancer risk among Icelanders, Italian and African-Americans, respectively. [8],[9] But, Amos CI et al found that the polymorphisms of rs7164594 at PSMA4 were not associated with lung cancer developing in African-American (OR=0.76; P=0.02387>0.00147 (the Bonferroni-adjusted level)). [10] Based on these findings, genetic susceptibility is one possible factor influencing this disparity. [11] So, the question was raised whether the impact of these polymorphisms on susceptibility to lung cancer was existed in a Chinese population. Up to date, it remains unknown. In order to investigate this further, we conducted this case-control study to examine polymorphisms of TGM5 rs504417, PPAP2B rs1261411 and PSMA4 rs7164594 with risks for NSCLC and further stratified based on two major histological subtypes of NSCLC (ADC and SQC) in a never-smoking Chinese.

 > Materials and Methods Top

Patients and Controls

Two hundred patients with NSCLC were matched with 200 unrelated healthy controls who had never smoked. The patients was consecutively selected and enrolled from 2011-05-01 to 2011-11-28. The study protocol was approved by the Ethical Review Committee. Informed consent was provided by all cases and controls.

DNA preparation and genotyping

Four hundred subjects (145 ADC and 55 SQC, 200 healthy controls) were genotyped for polymorphisms of rs504417, rs7164594 and rs1261411 at TGM5, PSMA4 and PPAP2B, respectively. DNA was isolated from 1ml whole blood using the AxyPrep Blood Genomic DNA Miniprep kit (Axygen Biosciences, Union City, CA, USA). Genotyping of each participant was finished by MassARRAY compact analyzer based on the chip-based matrix-assisted laser desorption ionization time-of-flight mass spectrometry platform (Sequenom, San Diego, CA, USA). Multiplex reaction was designed using Assay Designer software version 3.0 (Sequenom) and was processed following standard protocols for iPLEX chemistry. Primers were synthesized by Sangon Biotech (Shanghai, China) [Table 1].
Table 1: Oligonucleotide sequence used for genotyping

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Statistical analysis

Calculations of allele frequency and genotype frequency, tests of Hardy- Weinberg equilibrium (HWE) were performed using Microsoft Excel macro PHARE version 2.1. Comparing of the allele and 3 genotypes in cases versus controls was carried out using Pearson's chi-squared tests. OR and 95% CI were obtained with Plink software. P value of less than 0.05 was considered statistically significant. Statistical powers were calculated using software of Power for Association with Error (PAWE version 1.2, Chad Haynes Laboratory of Statistical Genetics, The Rockefeller University)

 > Results Top

A total of 400 subjects (200 patients with 145 ADCs and 55 SQCs and 200 controls) were successfully genotyped for polymorphisms of rs504417, rs7164594 and rs1261411. The sizes of samples included in the present study had 20% power (at the 5% level). We examined Hardy-Weinberg equilibrium in the controls and cases, and no evidence of deviation from Hardy-Weinberg equilibrium in each gene was found [Table 2]. There was no significant difference for the 3 markers in allele or genotype frequencies whether between controls and cases or between controls and subgroups (ADC and SQC) [Table 3].
Table 2: HWE Pearson's P in cases and controls

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Table 3: Allele and Genotypes distribution and controls and their association with risk of lung cancer in never-smoking Chinese

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 > Discussion Top

We undertook the present study to investigate the association between NSCLC and the polymorphisms of TGM5, PSMA4 and PPAP2B in never-smoking Chinese. Our findings show that none of TGM5, PSMA4 and PPAP2B variant contributed to the susceptibility of NSCLC in Chinese population.

Transglutaminases is Ca 2+ -dependent enzymes, which catalyze intermolecular isopeptide bonds by transamidation of specific glutamine residues. [12],[13] Transglutaminases 5 (TGM5) was identified member of the TGM family in 1998, and was expressed in keratinocyte differentiation, and cross-links specific substrates. [14],[15],[16] In addition, TGM5 is associated with cytoskeletal elements, colocalizing with the vimentin network [17] and required for structural integrity of the outermost epidermal layers. [18] TGM5 can induce cell death in over- expression, and seems to retain the residues involved in GTP regulation. [19] While the polymorphism of rs504417 in TGM5 was shown to be strongly associated with NSCLC patients in Icelanders with a P value of 0.0043, this association was not observed in our study. Much work should, therefore be launched in the future, in particular, further investigation in large samples is expected on the contribution of TGM5 to susceptibility risk of NSCLC.

Recently genome-wide association studies of lung cancer have shown common variation at 15q24-25.1 as a determinant of risk. [20],[21],[22] PSMA4 was located at the 15q24-25.1 locus and encodes a structural protein of the 20S proteasome core [23],[24] and was required for proteasomal activities. [25] The proteasome is the central proteolytic system that also plays an important role in the major histocompatibility complex-class I antigen processing. [26] PSMA4 is a component of the Adenosine Triphosphate- and ubiquitin-dependent nonlysosomal pathway, and it is involved in the processing of class I major histocompatibility complex peptides. [20] PSMA4 has a role in modulating human lung cancer cell proliferation. Expression of PSMA4 was increased in lung tumors compared with matched normal lung tissues. [25] But, there was not association between polymorphism of PSMA4 and NSCLC in our study. We believe this primarily be attributed to the significantly distinct genetic background of Asian populations from western populations.

Phosphatidic acid phosphatases type-2 (PPAP2) are a group of integral membrane enzymes that participate in intracellular lipid metabolism and which also regulate the biological activity and signaling of several bioactive phospholipids such as phosphatidic acid, diacylglycerol, lysophosphatidic acid, sphingosine-1-phosphate, ceramide-1-phosphate, and ceramide. [27],[28] PPAP2B was one of three members of PAP2 family, human PPAP2B contains an exposed arginine- glycine-aspartate (RGD) cell adhesion sequence, and which expression increases cell/cell interactions through αvβ3 and anti-α5β1 integrins. [29] PPAP2B plays a fundamental role during early spinal neuroepithelium development and that it could also be instrumental in regulating neurite and axon outgrowth in vivo dephosphorylated. [30] PPAP2B-inducedβ-catenin/ LEF-1 signaling plays a critical role in EC migration, cell-cell adhesion, and formation of branching point structures. [31] Furthermore, PPAP2B can potentiate tumor growth by amplifying β-catenin and Cyclin-D1 activities. [32] However, we did not find an association between PPAP2B polymorphisms and NSCLC in never-smoking Chinese population. Further biological analysis of PPAP2B in cancer cells should be done to identify the functional association with lung cancer.

To conclude, the study showed no relationship between polymorphisms of the three SNPs (TGM5 rs504417, PPAP2B rs1261411 and PSMA4 rs7164594) and NSCLC in Chinese populations. However, the number of cases was small in this study, and more research is required to test our results.

 > Acknowledgements Top

We appreciated Zhijun Li for his kind help in the control of the screening process. We also thank Hailong Liu for his excellent technical support.

 > References Top

1.Jemal A, Siegel R, Xu J, Ward E. Cancer Statistics, 2010. CA Cancer J Clin 2010;60:277-300.  Back to cited text no. 1
2.Brennan P, Crispo A, Zaridze D, Szeszenia-Dabrowska N, Rudnai P, Lissowska J, et al. High cumulative risk of lung cancer death among smokers and nonsmokers in Central and Eastern Europe. Am J Epidemiol 2006;164:1233-41.  Back to cited text no. 2
3.Peto R, Darby S, Deo H, Silcocks P, Whitley E, Doll R. Smoking, smoking cessation, and lung cancer in the UK since 1950: combination of national statistics with two case-control studies. BMJ 2000;321:323-9.  Back to cited text no. 3
4.Li X, Hemminki K. Familial and second lung cancers: A nation-wide epidemiologic study from Sweden. Lung Cancer 2003;39:255-63.  Back to cited text no. 4
5.Jonsson S, Thorsteinsdottir U, Gudbjartsson DF, Jonsson HH, Kristjansson K, Arnason S, et al. Familial risk of lung carcinoma in the Icelandic population. JAMA 2004;292:2977-83.  Back to cited text no. 5
6.Etzel CJ, Amos CI, Spitz MR. Risk for smoking-related cancer among relatives of lung cancer patients Cancer Res 2003;63:8531-5.  Back to cited text no. 6
7.Rafnar T, Sulem P, Besenbacher S, Gudbjartsson DF, Zanon C, Gudmundsson J, et al. Genome-wide significant association between a sequence variant at 15q15.2 and lung cancer risk. Cancer Res 2011;71:1356-61.  Back to cited text no. 7
8.Galvan A, Falvella FS, Frullanti E, Spinola M, Incarbone M, Nosotti M, et al. Genome-wide association study in discordant sibships identifies multiple inherited susceptibility alleles linked to lung cancer. Carcinogenesis 2010; 31:462-5.  Back to cited text no. 8
9.Hansen HM, Xiao Y, Rice T, Bracci PM, Wrensch MR, Sison JD, et al. Fine mapping of chromosome 15q25.1 lung cancer susceptibility in African- Americans. Human Molecular Genetics 2010;19:3652-61.  Back to cited text no. 9
10.Amos CI, Gorlov IP, Dong Q, Wu X, Zhang H, Lu EY, et al. Nicotinic Acetylcholine Receptor Region on Chromosome 15q25 and Lung Cancer Risk Among African Americans: A Case-Control Study. J Natl Cancer Inst 2010;102:1199-205.  Back to cited text no. 10
11.Cote ML, Kardia SL, Wenzlaff AS, Ruckdeschel JC, Schwartz AG. Risk of lung cancer among white and black relatives of individuals with early-onset lung cancer. JAMA 2005;293:3036-42.  Back to cited text no. 11
12.Melino G, Candi E, Steinert PM. Assay for transglutaminases in cell death. Methods Enzymol 2000;322:433-71.  Back to cited text no. 12
13.Lorand L, Graham RM. Transglutaminases: Crosslinking enzymes with pleiotropic functions. Nature Review Mol Cell Biol 2003;4:140-56.  Back to cited text no. 13
14.Aeschlimann D, Koeller MK, Allen-Hoffmann BL, Mosher DF. Isolation of a cDNA encoding a novel member of the transglutaminase gene family from human keratinocytes. Detection and identification of transglutaminase gene products based on reverse transcriptionpolymerase chain reaction with degenerate primers. J Biol Chem 1998;273:3452-60.  Back to cited text no. 14
15.Candi E, Oddi S, Terrinoni A, Paradisi A, Ranalli M, Finazzi-Agro′ A, et al. Transglutaminase 5 cross-links loricrin, involucrin and SPRs during epidermal differentiation. J Biol Chem 2001;276:35014-23.  Back to cited text no. 15
16.Candi E, Paradisi A, Terrinoni A, Cadot B, Rufini A, Puddu P, et al. Role of transglutaminase 5 in epidermis. Biochem J 2004;381:313-9.  Back to cited text no. 16
17.Candi E, Oddi S, Paradisi A, Terrinoni A, Ranalli M, Teofoli P, et al. Expression of transglutaminase 5 in normal and pathological human epidermis. J Invest Dermatol 2002;119:670-7.  Back to cited text no. 17
18.Cassidy AJ, Van Steensel MA, Steijlen PM, Van Geel M, Van der Velden J, Morley SM, et al. A homozygous missense mutation in TGM5 abolishes epidermal transglutaminase 5 activity and causes acral peeling skin syndrome. Am J Hum Genet 2005;77:909-17.  Back to cited text no. 18
19.Cadot B, Rufini A, Pietroni V, Ramadan S, Guerrieri P, Melino G, et al. Overexpressed transglutaminase 5 triggers cell death. Amino Acids 2004;26:405-8.  Back to cited text no. 19
20.Amos CI, Wu X, Broderick P, Gorlov IP, Gu J, Eisen T, et al. Genome-wide association scan of tag SNPs identifies a susceptibility locus for lung cancer at 15q25.1. Nat Genet 2008;40:616-22.  Back to cited text no. 20
21.Hung RJ, McKay JD, Gaborieau V, Boffetta P, Hashibe M, Zaridze D, et al. A susceptibility locus for lung cancer maps to nicotinic acetylcholine receptor subunit genes on 15q25. Nature 2008;452:633-7.  Back to cited text no. 21
22.Thorgeirsson TE, Geller F, Sulem P, Rafnar T, Wiste A, Magnusson KP, et al. A variant associated with nicotine dependence, lung cancer and peripheral arterial disease. Nature 2008;452:638-42.  Back to cited text no. 22
23.Nandi D, Woodward E, Ginsburg DB, Monaco JJ. Intermediates in the formation of mouse 20S proteasomes: implications for the assembly of precursor â subunits. EMBO J 1997;16:5363-75.  Back to cited text no. 23
24.Davoli R, Fontanesi L, Russo V, Cepica S, Musilová P, Stratil A, et al. The porcine proteasome subunit A4 (PSMA4) gene: Isolation of a partial cDNA, linkage and physical mapping. Anim Genet 1998;29:385-8.  Back to cited text no. 24
25.Liu Y, Liu P, Wen W, James MA, Wang Y, Bailey-Wilson JE, et al. Haplotype and Cell Proliferation Analyses of Candidate Lung Cancer Susceptibility Genes on Chromosome 15q24-25.1. Cancer Res 2009;69:7844-50.  Back to cited text no. 25
26.Saiki T, Kawai T, Morita K, Ohta M, Saito T, Rokutan K, et al. Identification of Marker Genes for Differential Diagnosis of Chronic Fatigue Syndrome. Mol Med 2008;14:599-607.  Back to cited text no. 26
27.Brindley DN, Waggoner DW. Mammalian lipid phosphate phosphohydrolases. J Biol Chem 2008;273:24281-4.  Back to cited text no. 27
28.Br indley DN, English D, Pilquil C, Buri K, Ling ZC. Lipid phosphate phosphatases regulate signal transduction through glycerolipids and sphingolipids. Biochim Biophys Acta 2002;1582:33-44.  Back to cited text no. 28
29.Humtsoe JO, Feng S, Thakker GD, Yang J, Hong J, Wary KK. Regulation of cell-cell interactions by phosphatidic acid phosphatase 2b/VCIP. EMBO J 2003;22:1539-54.  Back to cited text no. 29
30.Sánchez-Sánchez R, Morales-Lázaro SL, Baizabal JM, Sunkara M, Morris AJ, Escalante-Alcalde D. Lack of lipid phosphate phosphatase-3 in embryonic stem cells compromises neuronal differentiation and neurite outgrowth. Dev Dyn 2012;241:953-64.  Back to cited text no. 30
31.Humtsoe JO, Liu M, Malik AB, Wary KK. Lipid phosphate phosphatase 3 stabilization of beta-catenin induces endothelial cell migration and formation of branching point structures. Mol Cell Biol 2010;3:1593-606.  Back to cited text no. 31
32.Chatterjee I, Humtsoe JO, Kohler EE, Sorio C, Wary KK. Lipid phosphate phosphatase-3 regulates tumor growth via â-catenin and CYCLIN-D1 signaling. Mol Cancer 2011;10:51.  Back to cited text no. 32


  [Table 1], [Table 2], [Table 3]


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