Project description:This SuperSeries is composed of the following subset Series: GSE16353: The profile of cellular and KSHV microRNAs in AIDS_KS biopsies (and normal skin control biopsies) GSE16354: Infection of Lymphatic and Blood Vessel Endothelial Cells (LEC and BEC) with KSHV GSE16355: Lymphatic endothelial cells (LEC) transfected with the KSHV microRNA cluster GSE16356: Lymphatic endothelial cells (LEC) treated with a MAF-targeted siRNA Refer to individual Series
Project description:Kaposi sarcoma is the most common cancer in AIDS patients and is typified by red skin lesions. The disease is caused by the KSHV virus (HHV8) and is recognisable by its distinctive red skin lesions. The lesions are KSHV-infected spindle cells, most commonly the lymphatic endothelial and blood vessel endothelial cells (LEC and BEC), plus surrounding stroma. The KSHV virus expresses multiple MAF-downregulating microRNA. Here we test the effects of MAF silencing by siRNA in LEC cells using Affymetrix hgu133plus2 chips. Experiment Overall Design: There are n=3 of 1. LEC control cells transfected with a non-targeting siRNA, 2. LEC transfected with a MAF-targeting siRNA
Project description:Kaposi sarcoma is the most common cancer in AIDS patients and is typified by red skin lesions. The disease is caused by the KSHV virus (HHV8) and is recognisable by its distinctive red skin lesions. The lesions are KSHV-infected spindle cells, most commonly the lymphatic endothelial and blood vessel endothelial cells (LEC and BEC), plus surrounding stroma. The KSHV virus expresses multiple MAF-downregulating microRNA. Here we test the effects of MAF silencing by siRNA in LEC cells using Affymetrix hgu133plus2 chips.
Project description:Analysis of ex vivo isolated lymphatic endothelial cells from the dermis of patients to define type 2 diabetes-induced changes. Results preveal aberrant dermal lymphangiogenesis and provide insight into its role in the pathogenesis of persistent skin inflammation in type 2 diabetes. The ex vivo dLEC transcriptome reveals a dramatic influence of the T2D environment on multiple molecular and cellular processes, mirroring the phenotypic changes seen in T2D affected skin. The positively and negatively correlated dLEC transcripts directly cohere to prolonged inflammatory periods and reduced infectious resistance of patients´ skin. Further, lymphatic vessels might be involved in tissue remodeling processes during T2D induced skin alterations associated with impaired wound healing and altered dermal architecture. Hence, dermal lymphatic vessels might be directly associated with T2D disease promotion. Global gene expression profile of normal dermal lymphatic endothelial cells (ndLECs) compared to dermal lymphatic endothelial cells derived from type 2 diabetic patients (dLECs).Quadruplicate biological samples were analyzed from human lymphatic endothelial cells (4 x diabetic; 4 x non-diabetic). subsets: 1 disease state set (dLECs), 1 control set (ndLECs)
Project description:GeneChip® Mouse Gene 2.0 ST Array for C57BL/6 mouse skin dermal primary lymphatic endothelial cells (Ms LEC) and mouse lymphatic endothelial cell line SVEC4-10 GeneChip® Human Gene 2.0 ST Array for human primary lymphatic endothelial cells (Hu LEC) Total RNA from lymphatic cell line SVEC4-10 were used for GeneChip® Mouse Gene 2.0 ST Array. SVEC4-10 samples, human and mouse LEC samples.
Project description:Trafficking of leukocytes (dendritic cells, memory T cells, neutrophils) and tumor cells through the lymphatic network is a key process in inflammation and immunity and an important mechanism in metastatic spread of human cancers (1-3). Such trafficking involves both communication with and passage across lymphatic endothelium, the distinct endothelium that lines lymphatic vessels within the peripheral tissues and forms the lymphatic sinuses within lymph nodes. However, in comparison with blood vascular endothelium, there is only a rudimentary understanding of the molecular phenotype of lymphatic endothelium, and only a basic knowledge of the glycoconjugates that regulate leukocyte-endothelial and tumor cell-endothelial interactions in the lymphatic compartment. We would anticipate that changes in glycosylation of LEC cell surface proteins following activation might affect important functions associated withy LEC including eg. interactions with leukocytes and/or sequestration of GAG-binding chemokines. We already have shown that ligand binding to the lymphatic endothelial hyaluronan receptor LYVE-1 is reversibly masked by terminal sialation in LEC and that functional regulation of LYVE-1 is likely to be important in inflammation. An advantage of our proposal is that we can routinely isolate primary LEC in relatively large numbers, and have the necessary ethical approval to do so from human tissue. Glycan analysis of primary human lymphatic endothelial cells (LEC) in their resting and activated states, in normal and tumour tissues and a comparison of the LEC glycan structures with those from blood vessel endothelial cells
Project description:Analysis of ex vivo isolated lymphatic endothelial cells from the dermis of patients to define type 2 diabetes-induced changes. Results preveal aberrant dermal lymphangiogenesis and provide insight into its role in the pathogenesis of persistent skin inflammation in type 2 diabetes. The ex vivo dLEC transcriptome reveals a dramatic influence of the T2D environment on multiple molecular and cellular processes, mirroring the phenotypic changes seen in T2D affected skin. The positively and negatively correlated dLEC transcripts directly cohere to prolonged inflammatory periods and reduced infectious resistance of patients´ skin. Further, lymphatic vessels might be involved in tissue remodeling processes during T2D induced skin alterations associated with impaired wound healing and altered dermal architecture. Hence, dermal lymphatic vessels might be directly associated with T2D disease promotion.
Project description:Kaposi sarcoma is the most common cancer in AIDS patients and is typified by red skin lesions.The disease is caused by the KSHV virus (HHV8) and is recognisable by its distinctive red skin lesions. The lesions are KSHV infected spindle cells expressing markers of the lymphatic endothelial and blood vessel endothelial cells as well as other cell types. The effects of KSHV infection of lymphatic endothelial cells (LEC) cultured in 3D matrix for three days were assayed using Affymetrix hgu133plus2 chips. There are n=3 of 1. control LEC spheroids (LEC), 2. KSHV infected LEC spheroids (K-LEC)
Project description:GeneChip® Mouse Gene 2.0 ST Array for C57BL/6 mouse skin dermal primary lymphatic endothelial cells (Ms LEC) and mouse lymphatic endothelial cell line SVEC4-10 GeneChip® Human Gene 2.0 ST Array for human primary lymphatic endothelial cells (Hu LEC) Total RNA from lymphatic cell line SVEC4-10 were used for GeneChip® Mouse Gene 2.0 ST Array.