广东地区CML患者中HLA-A,B,DRB1的表达与分析

为了调查慢性髓系白血病（CML）患者中HLA—A、B、DRB1基因多态性的表达，探讨HLA与CML之间的可能关联，采用DNA扩增基础上的反向序列特异性寡核苷酸杂交（PCR—RSSO）技术，对广东地区293例CML患者和随机同期采集的406名汉族健康献血者的HLA—A、B、DRB1位点进行基因多态性分型，并对2组间基因频率进行了比对分析。结果显示：CML组HLA—A＊24基因频率为15．53％，显著低于对照组22.09％（RR=0．63，P=0．005），HLA—B＊13基因频率为10．41％，与对照组6．74％相比则显著增高（RR=1.68，P=0.016），HLA—DRB1＊14基因频率为7．51％，与对照组11．89％相比显著降低（RR=0．58，P=0．008）。结论：HLA—A＊24、HLA—DRB1＊14在广东地区CML患者中表达较正常人明显减低，HLA—B＊13在广东地区CML患者中表达较正常人明显升高。HLA—A＊24、HLA—DRB1＊14是否为广东地区CML患者的保护性基因标记及HLA—B＊13是否为其易感性基因标记尚需进一步研究明确．

Expression and Analysis Of HLA-A,B and DRB1 Genes in Patients with Chronic Myelogenous Leukemia in Guangdong Area

To study the gene polymorphism of HLA-A, B, DRB1 alleles in patients with chronic myelogenous leukemia and to explore the correlation of HLA with chronic myelogenous leukemia, the polymerase chain reaction-reverse sequence specific oligonucleotide (PCR-RSSO) was used to analyze the polymorphism of HLA-A, B, DRB1 alleles of 293 CML Patients and 406 randomized and synchronous blood donors (healthy and unrelated with patients) from Guangdong Han population. The results indicate that the gene frequency of HLA-A*24 in CML group was 15.53% lower than that of control group (22.09%, RR = 0.63, p = 0.005); the gene frequency of HLA-B*13 in CML group was 10.41% higher than that of control group (6.74%, RR = 1.68, p = 0.016). The gene frequency of HLA- DRB1*14 in CML group was 7.51% lower than that of control group (11.89%, RR = 0.58, p = 0.008). The differences were all statistically significant. It is concluded that the gene frequency of HLA-A*24, HLA- DRB1*14 in CML patients is significantly lower than normal people in Guangdong. The gene frequency of HLA-B*13 in CML patients is significantly higher than normal people in Guangdong. Further study is needed to make sure whether HLA-A*24 and HLA- DRB1*14 are protective gene markers for CML acquisition on Guangdong Chinese Han population and whether HLA-B*13 is a gene marker for CML susceptibility on this population.