Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA90025 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Primary human dermal endothelial cells were infected or NOT infected with isolated Kaposi's sarcoma associated herpes virus for 7 days. Total RNA was isolated using Trireagent and subjected to microarray.
2008-06-12 | E-GEOD-1377 | biostudies-arrayexpress
Project description:Primary human dermal endothelial cells were infected or NOT infected with isolated Kaposi's sarcoma associated herpes virus for 7 days. Total RNA was isolated using Trireagent and subjected to microarray. Keywords: other
2004-05-08 | GSE1377 | GEO
Project description:Kaposiâs sarcoma (KS) is the most frequently occurring malignant tumor in patients infected with the human immunodeficiency virus. Recent studies have revealed that infection of vascular endothelial cells with Kaposi's sarcoma-associated herpes virus in vitro results in a lymphatic re-programming of these cells, with potent induction of the lymphatic marker genes podoplanin and VEGFR-3 which is mediated by upregulation of the transcription factor Prox1. However, the potential effects of Prox1 expression on the biology of KS and, in particular, on the aggressive and invasive behavior of KS tumors in vivo have remained unknown. We stably expressed Prox1 cDNA in the two mouse hemangioendothelioma cell lines EOMA and Py-4-1, well-established murine models for kaposiform hemangioendothelioma. Surprisingly, we found that expression of Prox1 was sufficient to induce a more aggressive behavior of tumors growing in syngenic mice, leading to enhanced local invasion into the muscular layer and to cellular anaplasia. This enhanced malignant phenotype was associated with upregulation of several genes involved in proteolysis, cytoskeletal reorganisation and migration. Together, these results indicate that Prox1 plays an important, previously unanticipated role in mediating the aggressive behavior of vascular neoplasms such as Kaposi's sarcoma. Experiment Overall Design: Total cellular RNA was extracted from two stably Prox1-expressing Py-4-1 cell clones and from two control-transfected Py-4-1 cell clones.
2008-10-18 | E-GEOD-8171 | biostudies-arrayexpress
Project description:Deregulation of lncRNAs by Kaposi's sarcoma-associated herpesvirus
| PRJNA350313 | ENA
Project description:The aging process is characterized by cellular functional decline and increased susceptibility to infections. Understanding the association between virus infection and aging is crucial for developing effective strategies against viral infections in older individuals. Kaposi's sarcoma-associated herpesvirus (KSHV) infection increases the risk of Kaposi's sarcoma, a vascular cancer prevalent among the elderly without HIV infection. However, the relationship between KSHV pathogenesis and cellular senescence remains unknown. Here, we demonstrate that KSHV infectivity is significantly increased in senescent human endothelial cells due to enhanced binding of virions to cell surface. Proteomic analysis identified caveolin-1 and CD109 that promote KSHV infection and were significantly upregulated in senescent cells. In particular, CD109 is expressed on cell surface and directly interacts with KSHV virions to enhance KSHV infection. Knockout of CD109 abolished while overexpression of CD109 promote KSHV binding to cell surface, and infectivity. These results identify CD109 as a novel KSHV entry receptor that enhances KSHV infection in senescent cells, which might in part explain the higher sensitivity of elder subjects to KSHV infection and Kaposi's sarcoma.
2024-04-17 | PXD048212 | Pride
Project description:Kaposi’s sarcoma (KS) is the most frequently occurring malignant tumor in patients infected with the human immunodeficiency virus. Recent studies have revealed that infection of vascular endothelial cells with Kaposi's sarcoma-associated herpes virus in vitro results in a lymphatic re-programming of these cells, with potent induction of the lymphatic marker genes podoplanin and VEGFR-3 which is mediated by upregulation of the transcription factor Prox1. However, the potential effects of Prox1 expression on the biology of KS and, in particular, on the aggressive and invasive behavior of KS tumors in vivo have remained unknown. We stably expressed Prox1 cDNA in the two mouse hemangioendothelioma cell lines EOMA and Py-4-1, well-established murine models for kaposiform hemangioendothelioma. Surprisingly, we found that expression of Prox1 was sufficient to induce a more aggressive behavior of tumors growing in syngenic mice, leading to enhanced local invasion into the muscular layer and to cellular anaplasia. This enhanced malignant phenotype was associated with upregulation of several genes involved in proteolysis, cytoskeletal reorganisation and migration. Together, these results indicate that Prox1 plays an important, previously unanticipated role in mediating the aggressive behavior of vascular neoplasms such as Kaposi's sarcoma. Keywords: Overexpression of Prox1 in Py-4-1 cell line.
2008-08-04 | GSE8171 | GEO
Project description:Kaposi's Sarcoma-associated Herpesvirus Encodes an Ortholog of miR-155
| PRJNA102893 | ENA
Project description:The objective of this study was to identify the transcription profiles of wild type KSHV and ORF59 deleted KSHV (Kaposi's sarcoma-associated herpesvirus) genome during early infection, till the virus establishes latent infection in human PBMCs Samples from each time points were analyzed and the experiments were done in duplicate.
2014-10-16 | E-GEOD-62339 | biostudies-arrayexpress
Project description:The objective of this study was to identify the transcription profiles of wild type KSHV and ORF59 deleted KSHV (Kaposi's sarcoma-associated herpesvirus) genome during early infection, till the virus establishes latent infection in human PBMCs
2014-10-16 | GSE62339 | GEO