Novel immune‐related signature based on immune cells for predicting prognosis and immunotherapy response in clear cell renal cell carcinoma

BackgroundClear cell renal cell carcinoma (ccRCC) is the most common malignant tumor of the kidney and is characterized by poor prognosis. We sought to build an immune‐related prognostic signature and investigate its relationship with immunotherapy response in ccRCC.MethodsImmune‐related genes were identified by ssGSEA and WGCNA. The prognostic signature was conducted via univariate, least absolute shrinkage and selection operator, and multivariable Cox regression analyses. Kaplan‐Meier analysis, PCA, t‐SNE, and ROC were used to evaluate the risk model.ResultsA total of 119 immune‐related genes associated with prognosis were screened out. Six immune‐related genes (CSF1, CD5L, AIM2, TIMP3, IRF6, and HHLA2) were applied to construct a prognostic signature for KIRC. Kaplan–Meier analysis showed that patients in high‐risk group had a poorer survival outcome than in low‐risk group. The 1‐, 3‐ and 5‐year AUC of the prognostic signature was 0.754, 0.715, and 0.739, respectively. Univariate and multivariate Cox regression models demonstrated that the risk signature was an independent prognostic factor for KIRC survival. GSEA analysis suggested that the high‐risk group was concentrated on immune‐related pathways. The high‐risk group with more regulatory T‐cell infiltration showed a higher expression of immune negative regulation genes. The risk score had positively relationship with TIDE score and negatively with the response of immunotherapy. The IC50 values of axitinib, sunitinib, sorafenib, and temsirolimus were lower in the high‐risk group.ConclusionOur study defined a robust signature that may be promising for predicting clinical outcomes and immunotherapy and targeted therapy response in ccRCC patients.     

Comparative analysis of transient receptor potential channel 5 opposite strand-induced gene expression patterns and protein-protein interactions in triple-negative breast cancer

In patients with triple-negative breast cancer (TNBC), high tumour mutation burden and aberrant oncogene expression profiles are some of the causes of poor prognosis. Therefore, it is necessary to identify aberrantly expressed oncogenes, since they have the potential to serve as therapeutic targets. Transient receptor potential channel 5 opposite strand (TRPC5OS) has been previously shown to function as a novel tumour inducer. However, the underlying mechanism of TRPC5OS function in TNBC remain to be elucidated. Therefore, in the present study TRPC5OS expression was first measured in tissue samples of patients with TNBC and a panel of breast cancer cell lines (ZR-75-1, MDA-MB-453, SK-BR-3, JIMT-1, BT474 and HCC1937) by using qRT-PCR and Western blotting. Subsequently, the possible effects of TRPC5OS on MDA-MB-231 cells proliferation were determined using Cell Counting Kit-8 and 5-Ethynyl-2′-deoxyuridine assays after Lentiviral transfection of MDA-MB-231. In addition, potential interaction partners of TRPC5OS were explored using liquid chromatography-mass spectrometry (LC-MS)/MS. Gene expression patterns following TRPC5OS overexpression were also detected in MDA-MB-231 cells by using High-throughput sequencing. Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) analysis were then used to systematically verify the potential interactions among the TRPC5OS-regulated genes. The potential relationship between TRPC5OS-interacting proteins and gene expression patterns were studied using Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) analysis. TRPC5OS expression was found to be significantly higher in TNBC tumour tissues and breast cancer cell lines compared with luminal tumour tissues and ZR-75-1. In addition, the overexpression of TRPC5OS significantly increased cell proliferation. High-throughput sequencing results revealed that 5,256 genes exhibited differential expression following TRPC5OS overexpression, including 3,269 upregulated genes and 1,987 downregulated genes. GO analysis results indicated that the functions of these differentially expressed genes were enriched in the categories of ‘cell division’ and ‘cell proliferation’ regulation. KEGG analysis showed that the TRPC5OS-regulated genes were associated with processes of ‘homologous recombination’ and ‘TNF signalling pathways’. Subsequently, 17 TRPC5OS-interacting proteins were found using LC-MS/MS and STRING analysis. The most important protein among interacting proteins was ENO1 which was associated with glycolysis and regulated proliferation of cancer. In summary, data from the present study suggest that TRPC5OS overexpression can increase TNBC cell proliferation and ENO1 may be a potential target protein mediated by TRPC5OS. Therefore, TRPC5OS may serve as a novel therapeutic target for TNBC.     

优秀游泳运动员大运动量训练期间的超声心动图测定

<正> 自1967年Feignbaum首先应用超声心动图测算心搏量以来,发展迅速,目前已广泛用于心脏功能和结构的测定。Morganroth等1975年发表题为“有训练运动员运动性左室肥大”。我国白洁心等于1979年报道了运动员超声心动图的测量分析。近几年来,国内关于运动员的超声心动图已先后发表了二十多篇文章,都是属于一次性的测定,在作横向比较时,由于仪     

运动训练中服用“高效强力饮”对心血管功能的效应

本文研究了一种中药水剂——高效强力饮对44名中长跑和游泳运动员运动能力的影响。测试结果表明:服药组与对照组相比,心搏量、射血分数和△D%均有明显增高;而运动后血乳酸水平,平均动脉压和总外周阻力均明显下降。这些都表明服药组有氧代谢能力方面有改善。     

Pregnancy outcomes in women with type 1 diabetes in China during 2004 to 2014: A retrospective study (the CARNATION Study)

BackgroundWe aimed to report pregnancy outcomes of women with type 1 diabetes (T1D) in China, on which data were sparse.MethodsThis is a nationwide retrospective study conducted in 11 general medical centers in 8 cities across China. We investigated the clinical data of all women who attended these centers with a singleton pregnancy and whose pregnancy ended between 1 January 2004 and 31 December 2014. Pregnancies of women with pregestational T1D were ascertained and compared with those of women without T1D.ResultsFrom over 300 000 pregnancies over the 11‐year study period, we identified 265 singleton pregnancies of women with T1D. One maternal death was documented among 265 (0.37%) women with T1D and 83 among 318 486 (0.03%) women without T1D. Women with T1D suffered from higher rates of pregnancy loss (13.21% vs 2.92%, crude risk ratio [cRR] 5.08 [95% CI, 3.56‐7.26]) and preeclampsia (17.74% vs 4.20%, cRR 4.94 [95% CI, 3.60‐6.77]) compared with those without T1D. Infants of these women with T1D had elevated rates of neonatal death (5.65% vs 0.16%, cRR 37.36 [95% CI, 21.21‐65.82]) and congenital malformation(s) (8.26% vs 3.53%, cRR 2.46 [95% CI, 1.54‐3.93]) compared with those of women without T1D. No significant improvement in pregnancy outcomes in women with T1D was observed over the period 2004 to 2014.ConclusionsPregnancy outcomes were persistently poor in women with T1D during 2004 to 2014 in China. Pregnancy care needs to be improved to reduce adverse pregnancy outcomes among Chinese women with T1D.     

幽门螺杆菌ureA、ureB基因克隆、序列分析及在E.coli中表达

目的　构建含幽门螺杆菌 （Hp） ure A、ure B基因重组质粒 ,测定、分析其核酸序列及推定的氨基酸序列 ,在 E.coli中高效表达两基因 ,为检测试剂和疫苗研究提供基础依据和抗原。方法　PCR法扩增 Hp菌株 HPSH4的 ure A、ure B基因 ,分别与 p GEX- 2 T载体连接并转化大肠杆菌JM10 5 ,测定克隆基因的核酸序列并与 Gen Bank公布的国外 5株 Hp菌株 （2 6 6 95 ,HPK 5 ,J99,CPM6 30 ,M6 0 398）的 ure A、ure B基因作序列比较 ,以 IPTG诱导 ,ure A、ure B基因在 E.coli中高效表达。结果　 ure A核酸同源性 96 .3%～ 98.1% ,氨基酸同源性 98.3%～ 10 0 % ;ure B核酸同源性95 .8%～ 98.0 % ,氨基酸同源性 96 .4 %～ 99.6 %。以 IPTG诱导 ,在 E.coli中表达 rure A融合蛋白5 5 6 0 0 D,rure B融合蛋白 85 5 0 0 D。结论　不同地区 Hp菌株的 ure A、ure B存在程度不同的变...     

磁共振脑功能成像方法的初步研究

探讨磁共振功能成像的方法，本文应用血氧合水平磁共振成像法，通过单次激发回波平面成像技术检测脑功能活动时的功能区信号变化。对８例右利手健康男性进行右手指随意运动的磁共振功能成像实验。实验采用静止－运动－静止三个阶段，运动又有简单复杂之分。此外，亦将梯度回波与平面回波技术同时应用在磁共振功能成像中以便进行比较。结果表明功能图像上可见左侧初级运动皮层区的信号变化，而在本实验中梯度回波图像上结果为阴性。平面回波成像技术在平面回波磁共振功能成像中磁敏感性高，稳定性好，有良好的时间分辨率，而梯度回波序列则较为不敏感。