目的 通过对未进行过商业基因检测(NCGT)社区居民和直接面向消费者的基因测试(DCGT)消费群体的调查,分析市场基因测试产品的消费构成和消费者社会特征与基因检测消费的相关因素。方法 采用分层随机抽样方法对广州市居民和直接面向消费者的基因检测非患者居民进行面访式调查,采用Logistics回归分析商业基因测试的相关社会学因素。结果 NCGT社区居民中其家庭成员进行过胎儿产前筛查基因检测的比例(26.3%)较高、DCGT人群因常规健康体检包含基因检测项目而进行基因测试的比例(44.8%)最高,儿童天赋基因的测试比例(23.3%)也相对较高,两个群体均认为基因检测的目的主要是预防疾病,信任的检测机构为医院。DCGT行为相关的社会学特征有婚姻(已婚vs未婚:OR=5.591,P<0.001)、学历(专科以上vs专科及以下:OR=0.071,P<0.001)、年龄(30～49岁组vs其他组:OR=0.223,P<0.001)、工作(全职vs其他:OR=4.660,P<0.001)、公费医疗(OR=1.183,P=0.021)和商业保险(OR=2.121,P=0.004)。结论 公众将基因测试看成是预防疾病和控制遗传性疾病的公共卫生手段,需要在医院将基因检测和个性化治疗对应起来。

Objective By investigating consumer groups that have no-commercial genetic testing (NCGT) community residents and direct-to-consumers genetic testing (DCGT), to analysze the consumer composition of market genetic testing products and the factors related to consumer social characteristics. Methods A stratified random sampling method was used to conduct a face-to-face survey of residents and non-patients of genetic testing in Guangzhou residents. The logistic regression analysis was used to analyze the sociological factors of commercial genetic testing. Results The proportion of children in the NCGT community who had prenatal screening for prenatal screening (26.3%) was higher, and the proportion of DCGT populations that were genetically tested for routine health checkups containing genetic testing (44.8%) was the highest. The proportion of test genes (23.3%) is also relatively high. Both groups believe that the purpose of genetic testing is mainly to prevent diseases, and the testing institutions for their trust are hospitals. The sociological characteristics associated with DCGT behavior are marriage (married vs unmarried: OR=5.591, P<0.001), education (specialist vs. specialist and below: OR=0.071, P<0.001), age (30~49 years vs others, OR=0.223, P<0.001), work (full-time vs other: OR=4.660, P<0.001), public medical care (OR=1.183, P=0.021) and commercial insurance (OR=2.121, P=0.004). Conclusion The public regards genetic testing as a public health tool for preventing diseases and controlling hereditary diseases, and it is necessary to correlate genetic testing with personalized treatment in hospitals.

目的 探讨自噬激活剂和自噬抑制剂分别对鼻咽癌细胞CNE2放疗敏感性的影响。方法 利用RNA干扰技术使atg5基因沉默,构建自噬抑制细胞模型后,与雷帕霉素、氯喹分别处理的两组细胞一起,每天以X射线5Gy照射细胞,连续8天观察各组细胞的生长状况,并设置对照组。以MTT法及克隆集落形成法检测其细胞活力,用流式细胞仪分析其细胞周期。结果 与对照组相比,其他三组细胞存活率、克隆形成率、照射后存活率均显著降低(P<0.05);细胞周期检测除对照组外其他三组细胞集中在G0/G1期,其他两个时期比G0/G1期相对较少。结论 自噬抑制剂与激活剂和atg5沉默均能为CNE2放疗增敏,然而自噬激活剂的增敏效果好于其他,为增敏放疗提供实验依据,开辟新的放疗增敏途径。

Objective This study aimed to investigate the autophagy activators and inhibitors effects in nasopharyngeal CNE2 cells radiotherapy sensitization. Methods Atg5 gene silencing by RNA interference technology, two groups of cell autophagy inhibition were built by rapamycin and chloroquine respectively. Then 5Gy x-ray irradiation of cells was taken every day, after 8 days in a row in each group of cell growth and setting a control group. The cell viability was clonaled colony formation by MTT method assay and cell cycle by flow cytometry analysis. Results The three cell group survival rate, colony-forming rate and survival after irradiation were significantly lower (P<0.05) than the control group. Detection of cell cycle in addition to control three other groups concentrated in the G0/G1 period.That of two other periods was relatively fewer than that of the G0/G1 period. Conclusion Autophagy inhibitors, activators and atg5 silence improved the radio-sensitization to CNE2. The autophagy activator group improving the sensitivity was better than the others.This study provided evidence to sensitive radiotherapy, explored a new promising radiosensitization ways.