膀胱癌细胞CAR 的表达对E1B 缺失腺病毒抗瘤活性的影响

【目的】观察不同组织类型膀胱癌细胞株表达柯萨奇病毒腺病毒受体( coxsackie and adenovirus receptor, CAR) 与E1B 缺失腺病毒(H101) 体外感染力及体内抗瘤活性的关系。【方法】体外通过流式细胞仪法 ( FCM) 检测不同组织类型膀胱癌细胞株表面CAR 表达, 用MTT 法测定病毒对它们的抑制率, 以观察CAR 表达 与H101 感染力的关系; 利用裸鼠移植瘤模型, 观察H101 对不同移植瘤的抗瘤活性。【结果】膀胱癌细胞上CAR 的表达量与H101 的感染力呈正相关( r = 0.952) ; 动物移植瘤实验结果显示, H101 对CAR 表达高的SCaBER 移 植瘤的抑制率较高, 有效持续的时间也较长。【结论】膀胱癌细胞株上不同的CAR 表达可直接影响H101 的体内 外抗瘤活性

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors