Project description:To investigate sex differences in endothelial cell response to AngII, male and female human umbilical vein endothelial cells (HUVEC) were treated with AngII for 24 hours. RNA seq was run, and demonstrated that female HUVEC had elevated genes associated with oxidative stress and inflammatory responses compared to male HUVEC following AngII treatment.
Project description:Significant sex differences exist in cardiovascular diseases. It is largely unknown whether sexually dimorphic gene expression plays a role, and whether cells themselves show intrinsic sex differences. We therefore performed whole genome expression analyses in human umbilical vein endothelial cells (HUVEC) from five sample pools with equal amounts of four individual RNAs from either male or female donors (altogether 20 male and 20 female donors) and compared levels of gene transcription between the sexes. Genes indicative for greater immune responsiveness were stronger expressed in female compared to male HUVEC. There was a significant enrichment of 77 immune-related genes in female HUVEC.
Project description:To assess whether there is a sex-specific response to stress, we subjected male and female HUVEC to laminar shear of 6 dyn/cm2 for 24 hours and analysed changes in gene expression. 6.7 % of all mRNAs were regulated by shear stress. Female HUVEC showed a more pronounced transcriptional response to shear than did their male counterparts. In addition to quantitative differences, a number of genes were regulated in the opposite direction between the two sexes by shear stress.
Project description:Many studies have characterised the effect of normal laminar shear stress (LSS) on endothelial responses, however elevated shear stress, as would be experienced overlying a stenotic plaque, has not been studied in depth. Therefore we used transcriptomics and related functional analyses to compare cells exposed to laminar shear stress at 15 or 75 dynes/cm2 for 24 hours (LSS15-normal or LSS75-high shear stress). Human umbilical vein endothelial cells (HUVEC n=4 per flow condition from different batches of pooled donor HUVEC p2) were cultured for 24 hours on gelatin coated slides under laminar shear stress of either 15 dynes/cm2 or 75 dynes/cm2 (LSS15 or LSS75) to assess the effect of high shear stress on endothelial cells. Total RNA was obtained using Qiagen kit and array analysis performed by Service XS (Leiden, Netherlands).
Project description:Endothelial cell secretomes were analyzed using culture medium derived from control young and premature senescent human umbilical vein endothelial cell (HUVEC).
Project description:Human umbilical vein endothelial cells (HUVECs) expressing vPK (HUVEC-vPK) have a survival advantage over control HUVEC under conditions of extrinsic- and intrinsic-mediated apoptosis.
Project description:To investigate sex differences at the transcriptome level in human pulmonary microvascular endothelial cells (HPMECs) from healthy male and female donors basally (in normoxia) and in hypoxic conditions. RNA-seq was performed on male (n=3) and female (n=4) HPMECs that were cultured in conditions of physiological shear stress (PMID: 36730645) in normoxia (21% O2) or in hypoxia (1% O2) for either 24 or 48 hours.
Project description:Preeclampsia-offspring have increased risks of developing cardiovascular disorders in adulthood, implicating that preeclampsia programs fetal vasculature in utero. Fetal sex is associated with the risk of preeclampsia but the underlying mechanisms are unclear. We hypothesize that preeclampsia alters fetal endothelial gene expression and disturbs cytokines and growth factors-induced endothelial function in a fetal sex-specific manner. Methods: RNAseq analysis was performed with female and male unpassaged (P0) human umbilical vein endothelial cells (HUVECs) from normotensive and preeclamptic (PE) pregnancies and verified by RT-qPCR. Results: PE dysregulate 926 and 172 genes in female and male P0-HUVECs, respectively. PE differentially dysregulates cardiovascular diseases (i.e. heart failure) and endothelial function (i.e. endothelial cell migration, calcium, eNOS, and iNOS signaling)-associated genes in female and male P0-HUVECs. PE also differentially dysregulates TNF-, TGFβ1-, FGF2-, and VEGFA-regulated gene networks in female and male P0-HUVECs. Conclusions: There are sexual dimorphisms of PE-dysregulated cardiovascular diseases and endothelial function-associated genes/pathways in fetal endothelial cells in association with sexual dimorphisms of PE-dysregulated fetal endothelial function.
Project description:To compare the gene expression profiles of unpassaged, proliferating HUVEC and human iris, retinal and choroidal microvascular endothelial cells. Gene expression profiling revealed significant differences between HUVEC and ocular microvascular endothelial cells suggesting that HUVE cells may not be a suitable surrogate when studying pathophysiological mechanisms of ocular disorders. There were significant differences in the gene expression of important cell signalling pathways in human retinal and choroidal ECs. These differences may be important in the mechanisms and treatment of choroidal and retinal neovascularisation. 12 arrays are included. Endothelial cells were derived from 4 tissues: iris, retina, choroid and human umbilical vein. RNA extracts from cells were hybridised to Affymetrix HGU133plus2 arrays in triplicate.
