Objective： Lysosome associated protein transmembrane 4 beta （LAPTM4B） was originally identified as a gene in human hepatocellular carcinoma （HCC）. It was successfully cloned by fluorescence differential display, ...Objective： Lysosome associated protein transmembrane 4 beta （LAPTM4B） was originally identified as a gene in human hepatocellular carcinoma （HCC）. It was successfully cloned by fluorescence differential display, rapid amplification of cDNA ends （RACE） and reverse transcription polymerase chain reaction （RT-PCR）. Previous study showed that the novel gene played an important role in the occurrence, development, migration and prognosis of tumors. Pancreatic cancer is an aggressive malignancy with the majority of patients dying within one year after diagnosis. This study tries to find out the relationship between lysosome associated protein transmembrane 4 beta gene polymorphism and the susceptibility of pancreatic cancer. Methods： A case-control study was conducted in China, including 58 pancreatic cancer cases and 156 healthy controls. Human genomic DNA was used as the template, polymerase chain reaction （PCR） was used to detect the distribution of LAPTM4B genotype. Analyses Odds ratio （OR） and corresponding 95% confidence interval （95%CI） with logistic regression were performed. Results： Two alleles of LAPTM4B generated three kinds of genotypes in population, ＊1/1, ＊1/2, and ＊2/2. The genotype frequency of ＊1/1, ＊1/2 and ＊2/2 in the pancreatic cancer group were 41.4%, 44.8% and 13.8% respectively, which were not significantly different from those of healthy group （47.4%, 42.9%, 9.6%） （P=0.773, P=0.291）. Also the ＊2 allele frequency of LAPTM4B among pancreatic cancer had no significantly difference with the controls （P=0.354）. When compared to the ＊1 allele, the people with ＊2 allele had no increased risk of pancreatic cancer. Conclusion： The gene polymorphism of LAPTM4B may not influence the susceptibility of pancreatic cancer.展开更多
目的：探讨溶酶体相关4次跨膜蛋白质B（lysosome-associated protein transmembrane 4 beta，LAPTM4B）基因多态性与肝癌易感性的关系．方法：应用病例对照研究方法，收集190例肝癌患者、190例慢性乙型肝炎患者、175例健康献血者全血，...目的：探讨溶酶体相关4次跨膜蛋白质B（lysosome-associated protein transmembrane 4 beta，LAPTM4B）基因多态性与肝癌易感性的关系．方法：应用病例对照研究方法，收集190例肝癌患者、190例慢性乙型肝炎患者、175例健康献血者全血，分离白细胞，提取基因组DNA，采用特异性引物PCR方法，扩增LAPTM4B第一外显子5′UTR内的部分序列，对三组人群进行分析研究．x^2检验分析肝癌组与对照组LAPTM4B的基因多态性和其他相关因素的相关性．结果：LAPTM4B等位基因在三组观察对象中的分布，^＊1和^＊2在健康对照组的频率分别是75．71％和24．29％，慢肝组73．16％和26、84％，肝癌组中66．84％和33.45％，三组比较等位基因分布频率有统计学意义，健康对照组与肝癌组比较有统计学意义（x^2=6．979，P=0．008）．LAPTM4B的基因型LAPTM4B1^＊1型、LAPTM4B^＊1／2混合型和LAPTM482^＊2型在肝癌组中的频率分别是37.9％、57.9％和4．2％、慢肝组50．5％、45．3％和4．2％、健康对照组56．6％、38.3％和5．1％，三组间三种基因型分布频率比较有统计学意义（x^2=14．854，P〈0．005）.结论：基因型^＊1／2和等位基因^＊2可能与肝癌的发生有关．展开更多
基金supported by the National Natural Science Foundation of China(No. 81071422)
文摘Objective： Lysosome associated protein transmembrane 4 beta （LAPTM4B） was originally identified as a gene in human hepatocellular carcinoma （HCC）. It was successfully cloned by fluorescence differential display, rapid amplification of cDNA ends （RACE） and reverse transcription polymerase chain reaction （RT-PCR）. Previous study showed that the novel gene played an important role in the occurrence, development, migration and prognosis of tumors. Pancreatic cancer is an aggressive malignancy with the majority of patients dying within one year after diagnosis. This study tries to find out the relationship between lysosome associated protein transmembrane 4 beta gene polymorphism and the susceptibility of pancreatic cancer. Methods： A case-control study was conducted in China, including 58 pancreatic cancer cases and 156 healthy controls. Human genomic DNA was used as the template, polymerase chain reaction （PCR） was used to detect the distribution of LAPTM4B genotype. Analyses Odds ratio （OR） and corresponding 95% confidence interval （95%CI） with logistic regression were performed. Results： Two alleles of LAPTM4B generated three kinds of genotypes in population, ＊1/1, ＊1/2, and ＊2/2. The genotype frequency of ＊1/1, ＊1/2 and ＊2/2 in the pancreatic cancer group were 41.4%, 44.8% and 13.8% respectively, which were not significantly different from those of healthy group （47.4%, 42.9%, 9.6%） （P=0.773, P=0.291）. Also the ＊2 allele frequency of LAPTM4B among pancreatic cancer had no significantly difference with the controls （P=0.354）. When compared to the ＊1 allele, the people with ＊2 allele had no increased risk of pancreatic cancer. Conclusion： The gene polymorphism of LAPTM4B may not influence the susceptibility of pancreatic cancer.
文摘目的：探讨溶酶体相关4次跨膜蛋白质B（lysosome-associated protein transmembrane 4 beta，LAPTM4B）基因多态性与肝癌易感性的关系．方法：应用病例对照研究方法，收集190例肝癌患者、190例慢性乙型肝炎患者、175例健康献血者全血，分离白细胞，提取基因组DNA，采用特异性引物PCR方法，扩增LAPTM4B第一外显子5′UTR内的部分序列，对三组人群进行分析研究．x^2检验分析肝癌组与对照组LAPTM4B的基因多态性和其他相关因素的相关性．结果：LAPTM4B等位基因在三组观察对象中的分布，^＊1和^＊2在健康对照组的频率分别是75．71％和24．29％，慢肝组73．16％和26、84％，肝癌组中66．84％和33.45％，三组比较等位基因分布频率有统计学意义，健康对照组与肝癌组比较有统计学意义（x^2=6．979，P=0．008）．LAPTM4B的基因型LAPTM4B1^＊1型、LAPTM4B^＊1／2混合型和LAPTM482^＊2型在肝癌组中的频率分别是37.9％、57.9％和4．2％、慢肝组50．5％、45．3％和4．2％、健康对照组56．6％、38.3％和5．1％，三组间三种基因型分布频率比较有统计学意义（x^2=14．854，P〈0．005）.结论：基因型^＊1／2和等位基因^＊2可能与肝癌的发生有关．
