Objective Urine is a promising biomarker source for clinical proteomics *** physiological differences are common in multi-center clinical *** this study,we investigate whether significant differences are present in th...
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Objective Urine is a promising biomarker source for clinical proteomics *** physiological differences are common in multi-center clinical *** this study,we investigate whether significant differences are present in the urinary proteomes of individuals from different regions in *** In this study,morning urine samples were collected from healthy urban residents in three regions of China(Haikou,Xi’an and Xining)and urinary proteins were preserved using a membrane-based method(Urimem).The urine proteomes of 27 normal samples were analyzed using LC-MS/MS and compared among three *** annotation of the differential proteins among the three areas was analyzed using the DAVID online database,and pathway enrichment of the differential urinary proteins was analyzed using *** We identified 1898 proteins from Urimem samples using label-free proteome quantification,of which 56 urine proteins were differentially expressed among the three regions(P<0.05).Hierarchical clustering analysis showed that inter-regional differences caused less significant changes in the urine proteome than intersex *** gender stratification,16 differential proteins were identified in male samples and 84 differential proteins were identified in female *** these differential proteins,several proteins have been previously reported as urinary disease *** Urimem will facilitate urinary protein storage for large-scale urine sample *** differences are a confounding factor influencing the urine proteome and should be considered in future multicenter biomarker studies.
ECV304 was reported first in 1990 as a spont aneously-transformed and immortalized cell line derived from a Japanese HUVEC. S ubsequently, many studies validated that the ECV304 is a permanent endothelial cell line. I...
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ECV304 was reported first in 1990 as a spont aneously-transformed and immortalized cell line derived from a Japanese HUVEC. S ubsequently, many studies validated that the ECV304 is a permanent endothelial cell line. It has been used widely as an endothelial cell model and an useful re search tool in biomedicine and pharmacology. However, several distinct differenc es exist between ECV304 and HUVEC. Some studies even pointed out that ECV304 is not of HUVEC origin. According to the research data including ours, this reporte dly endothelial-derived permanent human cell line ECV304 may be dedifferentiated towards an epithelial phenotype. It is therefore not an appropriate cell line t o study endothelial cell biology. But cultured ECV304 cells can still be used as a model, tool or target in the pathophysiological and pharmacological studies, depending on whether or not their functional expression or markers are suitable for the research work.
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