云南337名非综合征型聋患者CIB2基因196C>T, 272T>C和297C>G突变分析
Mutation Analysis of CIB2 196C>T 272T>C and 297 C>G in Patients with Non-syndromic Hearing Impairment
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摘要: 目的 探讨云南省部分地区特教学校聋生携带钙整合素结合蛋白2 (calcium-and integrin-binding protein 2, CIB2) 基因196C>T, 272T>C和297 C>G突变的频率.方法 实验组选取337名非综合征型耳聋学生, 已明确其全部未携带GJB2 (35 del G, 176_191 del 16, 235del C, 299_300 del AT) 、GJB3 (C538T, G547A) 、mt DNA 12S r RNA (A1555G, C1494T) 和SLC26A4 (IVS7_2A>G, A2168G) 致聋基因突变, 对照组采用150名健康人, 外周静脉采集EDTA抗凝管血液成分, 提取基因组DNA, 通过PCR扩增含CIB2基因196C>T, 272T>C和297 C>G的基因片段, 扩增产物直接测序鉴定其基因突变的位点.结果 在337名耳聋学生和150名健康人群中均未检测到CIB2基因196C>T, 272T>C和297 C>G突变.结论 CIB2基因196C>T, 272T>C和297C>G并非是云南省非综合征型耳聋患者携带的基因突变热点, 为该地区确定聋病基因筛查谱提供重要依据.Abstract: Objective To investigate the gene mutations of calcium-and integrin-binding protein 2 (CIB2) 196 C>T, 272 T > C and 297 C > G carried by students with non-syndromic hearing impairment from special educational schools in Yunnan Province. Me thods The experimental group included 337 students with non-syndromic hearing impairment who failed to carry deafness gene with GJB2 (35 del G, 176_191 del16, 235 del C, 299_300 del AT) , GJB3 (C538 T, G547 A) , mt DNA 12 S r RNA (A1555 G, C1494 T) , and SLC26 A4 (IVS7_2 A>G, A2168 G) . The control group consisted with 150 healthy people. Genomic DNA was isolated from peripheral blood with EDTA anti-coagulate. The subject's DNA fragments including CIB2 196 C>T, 272 T > C and 297 C > G were amplified by polymerase chain reaction (PCR) , and subsequently analyzed by direct sequencing to identify deafness-associated mutations. Re s ults Both in the experimental group and control group, we failed to find the mutation of CIB2 196 C>T, 272 T > C and 297 C > G in all individuals. Conclus ion Mutations in CIB2 gene 196 C>T, 272 T > C and 297 C > G are not a frequent cause of non-syndromic hearing loss among deaf people in Yunnan province. It provided important information for deafness with formulating landscape of gene screening in this region.
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Key words:
- Deafness /
- CIB2 gene /
- DNA /
- Mutation /
- Sequencing
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[1] [1]MA Y, XIAO Y, BAI X, et al.GJB2, SLC26A4, and mitochondrial DNA12S r RNA hot-spots in 156 subjects with non-syndromic hearing loss in Tengzhou, China[J].Acta Otolaryngol, 2016, 136 (8) :800-805. [2] [2]JIANG H, LIU Q, CHEN L.Screening and analysis of mutation hot-spots in deafness-associated genes among adolescents with hearing loss[J].Mol Med Rep, 2015, 12 (6) :8179-8184. [3]戴朴, 刘新, 于飞, 等.18个省市聋校学生非综合征性聋病分子流行病学研究 (Ⅰ) -GJB2 235del C和线粒体DNA 12Sr RNA A1555G突变筛查报告[J].中华耳科学杂志, 2006, 4 (1) :1-5. [4]华映坤, 马恒, 刘德胜, 等.云南省573名非综合征型聋学生SLC26A4基因IVS7_2A>G和2168 A>G的检测分析[J].听力学及言语疾病杂志, 2014, 22 (5) :510-514. [5]李雪涛, 刘德胜, 撒亚莲, 等.云南省部分聋生线粒体DNA12S r RNA A1555G和C1494T的突变[J].昆明医科大学学报, 2013, 34 (4) :4-7. [6]马静, 林垦, 毛志勇, 等.中国云南地区非综合征型感音神经性耳聋GJB2和GJB3基因突变分析[J].中国耳鼻咽喉颅底外科杂志, 2015, 21 (2) :99-103. [7] [7]YAMNIUK A P, NGUYEN L T, HOANG T T, et al.Metal ion binding properties and conformational states of calcium-and integrin-binding protein[J].Biochemistry, 2004, 43 (9) :2558-2568. [8] [8]RIAZUDDIN S, BELYANTSEVA I A, GIESE A P, et al.Alterations of the CIB2 calcium-and integrin-binding protein cause Usher syndrome type 1J and nonsyndromic deafness DFNB48[J].Nat Genet, 2012, 44 (11) :1265-1271. [9] [9]PATEL K, GIESE A P, GROSSHEIM J M, et al.A novel C-terminal CIB2 (calcium and integrin binding protein 2) mutation associated with non-syndromic hearing loss in a hispanic family[J].PLo S One, 2015, 10 (10) :e0141259. [10]刘德胜, 王金丽, 撒亚莲, 等.傣族、汉族非综合征型耳聋患者的GJB2基因分析[J].昆明医学院学报, 2012, 33 (10) :49-52. [11]王秋菊, 袁永一.常染色体隐性遗传性耳聋[J].听力学及言语疾病杂志, 2016, 24 (4) :421-424. [12]潘蕾, 刘宏彦, 刘瑾, 等.天津市81929例新生儿听力和聋病易感基因联合筛查情况分析[J].中国妇幼保健, 2016, 31 (4) :754-756. [13] [13]SECO CZ, GIESE AP, SHAFIQUE S, et al.Novel and recurrent CIB2 variants, associated with nonsyndromic deafness, do not affect calcium buffering and localization in hair cells[J].Eur J Hum Genet, 2016, 24 (4) :542-549. [14] [14]BOOTH K T, AZAIEZ H, KAHRIZI K, et al.PDZD7 and hearing loss:More than just a modifier[J].Am J Med Genet A, 2015, 167A (12) :2957-2965. [15] [15]BLAZEJCZYK M, SOBCZAK A, DEBOWSKA K, et al.Biochemical characterization and expression analysis of a novel EF-hand Ca2+binding protein calmyrin2 (Cib2) in brain indicates its function in NMDA receptor mediated Ca2+signaling[J].Arch Biochem Biophys, 2009, 487 (1) :66-78. [16] [16]MARKOVA S, SAFKA BROZKOVA D, MESZAROSOVA A, et al.Mutations in eight small DFNB genes are not a frequent cause of non-syndromic hereditary hearing loss in Czech patients[J].Int J Pediatr Otorhinolaryngol, 2016, 86 (7) :27-33.
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