计划完成,基因与鼻咽癌的相关性越来越受到广泛学者的关注[12~14]。我们课题组前期研究发现RTN4基因多态性与鼻咽癌易感性相关,位点rs2588510和rs1348528的单倍型CG、TA可增加鼻咽癌易感性;而rs2864052和rs6545468位点的单倍型AG则可降低鼻咽癌易感性[15~16]。而本研究未发现RTN4基因外显子区9个目的片段拷贝数变异与鼻咽癌的发病风险存在关联性。
Yang L等[17]经TaqMan方法检测鼻咽癌患者和对照组的丝裂原活化蛋白激酶活化蛋白激酶2(MAPKAPK2)启动子拷贝数(CNV-30450),发现CNV-30450拷贝数增加与鼻咽癌患病风险增加有关。认为可能存在的机制是CNV-30450拷贝数增加可以增强MAPKAPK2的启动子活性,从而提高MAPKAPK2的表达。Tse KP等[5]经利用全基因组SNP阵列和五种CNV预测算法,发现位于染色体6p21.3的CNV与鼻咽癌患病率增加相关联。而我们研究显示鼻咽癌患者RTN4基因外显子区9个目的片段拷贝数分布与对照组比较差异无统计意义,提示 RTN4基因外显子区9个目的片段拷贝数变异在鼻咽癌的遗传发病机制中不存在相关性。当然本实验存在一定的局限性:鼻咽癌组和对照组的研究样本数量相对较小,可能不足以发现两者RTN4基因外显子区拷贝数变异差异,在今后的研究中我们需要进一步扩大样本量予以证实。
参 考 文 献
[1] Turunen A,Rautava J,Grenman R,et al.Epstein-Barr virus (EBV)-encoded small RNAs (EBERs) associated with poor prognosis of head and neck carcinomas[J].Oncotarget,2017,8(16):27328-27338.
[2] 司勇锋,陶仲强.鼻咽癌病因学和防治研究[J].中国耳鼻咽喉头颈外科,2010,17(3):163-165.
[3] Lee AW,Ma BB,Ng WT,et al.Management of Nasopharyngeal Carcinoma:Current Practice and Future Perspective[J].J Clin Oncol,2015,33(29):3356-3364.
[4] Bruce JP,Yip K,Bratman SV,et al.Nasopharyngeal Cancer:Molecular Landscape[J].J Clin Oncol,2015,33(29):3346-3355.
[5] Tse KP,Su WH,Yang ML,et al.A gender-specific association of CNV at 6p21.3 with NPC susceptibility[J].Hum Mol Genet,2011,20(14):2889-2896.
[6] Blackburn A,Wilson D,Gelfond J,et al.Validation of copy number variants associated with prostate cancer risk and prognosis[J].Urol Oncol,2014,32(1):44.e15-20.
[7] Jamshidi N,Diehn M,Bredel M,et al.Illuminating radiogenomic characteristics of glioblastoma multiforme through integration of MR imaging,messenger RNA expression,and DNA copy number variation[J].Radiology,2014,270(1):1-2.
[8] Xu E,Sun W,Gu J,et al.Association of mitochondrial DNA copynumber in peripheral blood leukocytes with risk of esophageal adenocarcinoma[J].Carcinogenesis,2013,34(11):2521-2524.
[9] Oertle T,Schwab ME.Nogo and its partner[J].Trends CellBiol,2003,13(4):187-194.
[10] 趙红洋,朱薇薇,王金丽.Nogo-A 蛋白及 Nogo 受体抑制剂防治中枢神经系统疾病的研究进展[J].中国当代医药,2011,18(36):1920-1927.
[11] 胥武剑,沈国庆,李 强.Nogo-B 的生物学功能[J].生理学报,2013,65(4):445-450.
[12] Yang ZH,Dai Q,Zhong L,et al.Association of IL-1 polymorphisms and IL-1 serum levels with susceptibility to nasopharyngeal carcinoma[J].Mol Carcinog,2011,50(3):208-214.
[13] Yu YF,Han ZG,Guo WB,et al.Interleukin-10 polymorphisms and nasopharyngeal carcinoma risk:a meta-analysis[J].Genet Mol Res,2015,14(4):18945-18957.
[14] Wang J,Nong L,Wei Y,et al.Association of osteopontin polymorphisms with nasopharyngeal carcinoma risk[J].Hum Immunol,2014,75(1):76-80.
[15] 覃海媚,王 荣,韦贵将,等.广西壮族人群RTN4基因多态性及其单倍型与鼻咽癌易感性的关系[J].肿瘤防治研究,2017,44(3):221-224.
[16] 覃海媚,王 荣,韦贵将,等.RTN4基因rs2864052和rs6545468与广西壮族人群鼻咽癌易感性相关研究[J].临床耳鼻咽喉头颈外科杂志,2016,30(24):1942-1945.
[17] Yang L,Liu B,Qiu F,et al.The effect of functional MAPKAPK2 copy number variation CNV-30450 on elevating nasopharyngeal carcinoma risk is modulated by EBV infection[J].Carcinogenesis,2014,35(1):46-52.
推荐访问: 子区 鼻咽癌 相关性 变异 拷贝