KSHV infection of Endothelial Colony Forming Cells
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA856285 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR20002324_1.fastq.gz | Fastqsanger.gz | |||
| SRR20002324_2.fastq.gz | Fastqsanger.gz | |||
| SRR20002325_1.fastq.gz | Fastqsanger.gz | |||
| SRR20002325_2.fastq.gz | Fastqsanger.gz | |||
| SRR20002326_1.fastq.gz | Fastqsanger.gz |
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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 recognizable 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 effects of KSHV infection of LECs were assayed using Affymetrix hgu133plus2 chips at 6 and 72 hours post infection. There were n=4 each of lymphatic endothelial cells (LEC) following 6 hours of culture, LEC following 6 hours post KSHV infection, LEC following 72 hours of culture, and LEC following 72 hours post KSHV infection.
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Project description:Human induced pluripotent stem (hiPS) cells and human embryonic stem (hES) cells differentiate into cells of the endothelial lineage, but derivation of cells with human umbilical cord blood endothelial colony forming cell (ECFC)-like properties has not been reported. Here we describe a novel serum- and stromal cell-free ECFC differentiation protocol for the derivation of clinically relevant numbers of ECFCs (> 108) from hiPS and hES cells. We identified NRP-1+CD31+ selected cells that displayed a stable endothelial phenotype exhibiting high clonal proliferative potential, extensive replicative capacity, formation of human vessels that inosculated with host vasculature upon transplantation, but lacking in teratoma formation in vivo. We also identified NRP-1-VEGF165-KDR-mediated activation of KDR as a critical mechanism for the emergence and derivation of ECFCs from hiPS and hES cells. This protocol advances the field by generating highly replicative but stable endothelial cells for use as a potential cell therapy for human clinical disorders. Transcriptome sequencing of undifferentiated day 0 hiPS cells, Day 3 differentiated hiPS-derived mesoderm proginator cells, Day 12 hiPS-derived NRP-1+CD31+ cells, Day 12 H9-hES-derived NRP-1+CD31+ cells and cord blood-derived Endothelial colony forming cells.
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Project description:Endothelial colony-forming cells (ECFCs) have been reported as promising cells for regenerative medicine thanks to their angiorepair properties. Transcription factors are primary determinants of the functional capacity of the cells and TAL1 has been shown as a critical regulator of endothelial lineage in both development and adult life. However, only few (three) TAL1 targets have been identified so far in mouse and human endothelial cells. This ChIP-seq experiment was designed to identify genome binding/occupancy of TAL1 by ChIP and high throughput sequencing in primary human endothelial stem/progenitor cells.
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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.
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