美国研究人员开发出一种简单、廉价的试纸测癌法,能在数分钟内根据尿液样本判断实验鼠是否患癌症。研究人员报告说,这种试纸测癌法的工作方式与验孕试纸类似,基于尿液检测。测试过程中,先给测试对象注射一种特殊纳米颗粒。这种纳米颗粒可与癌细胞产生的一种蛋白酶相互反应,产生数以百计的生物标记物。一个人如果患有癌症,其尿液可以检测到这些生物标记物。研究负责人解释说,癌细胞通常会产生一种叫做MMP的蛋白酶,但这种蛋白酶在血液中浓度很低,通常难以测出。研究人员采取一种放大癌症信号的方法,上述特殊纳米颗粒外包裹着化合物多肽,进入人体后,纳 American researchers have developed a simple, cheap strip test cancer method, which can determine whether the mice are suffering from cancer according to the urine sample within a few minutes. Researchers report that this test strip works like a pregnancy test strip and is based on urine testing. During the test, the test object is injected with a special nanoparticle. This nanoparticle interacts with a protease produced by cancer cells to produce hundreds of biomarkers. If a person has cancer, urine can detect these biomarkers. The study leader explained that cancer cells usually produce a protease called MMP, but this protease is very low in blood and is often difficult to measure. Researchers to take a method of amplification of cancer signals, the above-mentioned special nanoparticles encapsulated compound polypeptide, after entering the human body, satisfied