C1236T、G2677T/A和C3435T基因多态性与乳腺癌分子分型的关系及意义
目的观察多药耐药基因1(MDR1)第12、21及26外显子C1236T、G2677T/A和C3435T基因多态性在乳腺癌患者外周血中的分布,分析其与分子分型的关系。方法应用高分辨熔解曲线(HRM)技术检测400例乳腺癌患者C1236T、G2677T/A及C3435T基因多态性。采用Hardy-Weinberg遗传平衡检验进行基因型分布遗传平衡吻合度检验。参照2013年St.Gallen国际专家乳腺癌分子分型共识。分析乳腺癌患者中C1236T、G2677T/A和C3435T基因型分布特点,并探讨其与分子分型的关系。结果 (1)400例乳腺癌患者中C1236T、G2677T/A和C3435T中分别...
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Published in | 天津医药 Vol. 44; no. 4; pp. 389 - 393 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
宁夏医科大学总医院肿瘤医院肿瘤内科 邮编750004%宁夏医科大学临床医学院%宁夏医科大学总医院生物芯片中心
2016
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Subjects | |
Online Access | Get full text |
ISSN | 0253-9896 |
DOI | 10.11958/20150238 |
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Summary: | 目的观察多药耐药基因1(MDR1)第12、21及26外显子C1236T、G2677T/A和C3435T基因多态性在乳腺癌患者外周血中的分布,分析其与分子分型的关系。方法应用高分辨熔解曲线(HRM)技术检测400例乳腺癌患者C1236T、G2677T/A及C3435T基因多态性。采用Hardy-Weinberg遗传平衡检验进行基因型分布遗传平衡吻合度检验。参照2013年St.Gallen国际专家乳腺癌分子分型共识。分析乳腺癌患者中C1236T、G2677T/A和C3435T基因型分布特点,并探讨其与分子分型的关系。结果 (1)400例乳腺癌患者中C1236T、G2677T/A和C3435T中分别有2例、3例和2例标本未得出基因分型结果,C1236T位点CC、CT和TT基因型分别占16.08%(64/398)、44.22%(176/398)和39.70%(158/398);G2677T/A位点GG、GT、GA、TT和AT基因型分别占16.62%(66/397)、44.33%(176/397)、7.05%(28/397)、27.46%(109/397)和4.54%(18/397);C3435T位点CC、CT和TT基因型分别占21.11%(84/398)、56.03%(223/398)和22.86%(91/398)。经Hardy-Weinberg遗传平衡检验,认为C1236T、G2677T/A和C3435T基因多态性具有群体代表性(P〉0.05)。(2)分子分型显示,11例人类表皮生长因子受体2(HER-2,2+)患者未行荧光原位杂交(FISH)检测予以剔除,其中Luminal A型占41.90%(163/389),Luminal B型占32.65%(127/389),HER-2过表达型占13.62%(53/389),三阴型占11.83%(46/389)。(3)C3435T位点CT/TT基因型在Luminal A型患者中的频率高于其在HER-2过表达型和三阴型患者中的频率(χ2=12.011,P=0.001;χ2=13.976,P〈0.001),C1236T和G2677T/A基因多态性在不同分子分型中的分布差异无统计学意义(P〉0.05)。结论 MDR1基因C3435T位点多态性可以为乳腺癌异质性提供更合理的补充,不同乳腺癌分子分型患者中CT/TT基因表型可能对药物治疗更敏感。 |
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Bibliography: | LIU Xinlan, ZHANG Haixia, LIU Yaobang, JIANG Min (1. General Hospital of Ningxia Medical University, Yinchuan 750004, China; 2. School of Clinical Medicine, Ningxia Medical University; 3. Department of Biochip Center, General Hospital of Ningxia Medical University) Objective To investigate the distribution of the MDR1 exon12(C1236T), exon21(G2677T/A) and exon 26(C3435T) gene polymorphisms in breast cancer patients, and to analyse their relationship with molecular subtypes of breastcancer. Methods The genotyping of C1236 T, G2677T/A and C3435 T were detected by polymerase chain reaction(PCR)-high resolution melting(HRM) method in 400 cases of breast cancer. The Hardy-Weinberg equilibrium test was used for ge-netic equilibrium distribution of genotype. The molecular subtypes of breast cancer were classified based on St.Gallen Con-sensus 2013. The genotype distributions of C1236 T, G2677T/A and C3435 T in breast cancer were analyzed. Their relation-ship with molecular subtypes in breast cancer was analyzed as wel |
ISSN: | 0253-9896 |
DOI: | 10.11958/20150238 |