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IL-2是由活化Th细胞分泌的一种细胞因子,通过与靶细胞膜上的IL-2R结合发挥多种生物学活性.IL-2R测定目前常用的方法有两种,生物学方法和放射免疫分析测定(RIA),本文发现在部分肿瘤患者IL-2活性及定量并不相符.为探讨两种方法在肿瘤患者免疫功能评价中的作用,我们对多种肿瘤患者同时进行了RIA和生物学测定,报道如下.1 材料和方法1.1 标本收集 原发性肝癌40例,年龄28～74岁,平均年龄43.5岁,中位年龄45.5岁,根据Ka- plany评分分为中晚期患者,各20例.其他肿瘤30例,包括胃癌、肺癌、乳腺癌患者.健康人对照20例.以上所有受检者采集标本时均未应用免疫抑制剂.IL-2标准品,分别进行RIA和活性测定,计算两者测定值的相关系数.1.2 测定方法 IL-2活性的测定采用MTT法,结果以U/ml表示.IL-2测定标准用IL-2为Sigma产品,IL-2定量测定采用放免法,结果以μg/L表示.2.1 结果(表1)
IL-2 is a cytokine secreted by activated Th cells and exerts various biological activities by binding to IL-2R on the target cell membrane. There are two commonly used methods for the determination of IL-2R, biological methods and radioimmunoassay. Analysis and measurement (RIA) found that the activity and quantification of IL-2 were not consistent in some tumor patients. To investigate the role of the two methods in the evaluation of immune function in cancer patients, we performed simultaneous RIA and biology for multiple tumor patients. The measurements were reported as follows.1 Materials and Methods 1.1 Specimens 40 primary liver cancer patients were collected, aged 28-74 years, mean age 43.5 years, median age 45.5 years, and divided into mid-late and late-stage patients according to Ka-plany score, 20 cases each. 30 cases of other tumors, including gastric cancer, lung cancer, breast cancer patients. Healthy people control 20 cases. All the above subjects did not apply immunosuppressants. IL-2 standard products, respectively, RIA and activity measurement, calculation The correlation coefficient between the two measured values. 1.2 Determination method IL-2 activity was measured using MTT method, the results are expressed in U / ml. IL-2 standard for the use of IL-2 for Sigma products, IL-2 quantitative radioimmunoassay, Results expressed in μg/L.2.1 Results (Table 1)