Characterization of de novo lytic infection of dermal lymphatic microvascular endothelial cells by Kaposi's sarcoma-associated herpesvirus. 2019

Gavin Golas, and Juan D Alonso, and Zsolt Toth
Department of Oral Biology, University of Florida College of Dentistry, 1395 Center Drive, Gainesville, FL, 32610, USA.

The biology of primary lytic Kaposi's sarcoma-associated herpesvirus (KSHV) infection is still not well understood, which is largely attributed to the lack of cell lines permissive to robust lytic KSHV infection in vitro. Our study demonstrates that primary human dermal lymphatic microvascular endothelial cells (HDLMEC) support lytic KSHV replication following de novo infection, resulting in robust KSHV production, indicating that HDLMECs are suitable for studying the regulation of primary lytic KSHV infection. Importantly, by utilizing lytically infected HDLMECs, we show for the first time that the KSHV latent genes LANA and viral cyclin are required for lytic replication during de novo lytic infection, a function of these latent genes that has not yet been recognized. Since Kaposi's sarcoma is considered to be originated from infected lymphatic endothelial cells, HDLMECs represent a valuable in vitro cell culture model for investigating lytic KSHV infection, which has been understudied in KSHV pathogenesis.

UI MeSH Term Description Entries
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D009687 Nuclear Proteins Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus. Nucleolar Protein,Nucleolar Proteins,Nuclear Protein,Protein, Nuclear,Protein, Nucleolar,Proteins, Nuclear,Proteins, Nucleolar
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000956 Antigens, Viral Substances elaborated by viruses that have antigenic activity. Viral Antigen,Viral Antigens,Antigen, Viral
D014779 Virus Replication The process of intracellular viral multiplication, consisting of the synthesis of PROTEINS; NUCLEIC ACIDS; and sometimes LIPIDS, and their assembly into a new infectious particle. Viral Replication,Replication, Viral,Replication, Virus,Replications, Viral,Replications, Virus,Viral Replications,Virus Replications
D015967 Gene Expression Regulation, Viral Any of the processes by which cytoplasmic factors influence the differential control of gene action in viruses. Regulation of Gene Expression, Viral,Viral Gene Expression Regulation,Regulation, Gene Expression, Viral
D016213 Cyclins A large family of regulatory proteins that function as accessory subunits to a variety of CYCLIN-DEPENDENT KINASES. They generally function as ENZYME ACTIVATORS that drive the CELL CYCLE through transitions between phases. A subset of cyclins may also function as transcriptional regulators. Cyclin
D017735 Virus Latency The ability of a pathogenic virus to lie dormant within a cell (LATENT INFECTION). In eukaryotes, subsequent activation and viral replication is thought to be caused by extracellular stimulation of cellular transcription factors. Latency in bacteriophage is maintained by the expression of virally encoded repressors. Viral Latency,Latencies, Viral,Latencies, Virus,Latency, Viral,Latency, Virus,Viral Latencies,Virus Latencies
D042601 Lymphatic Vessels Tubular vessels that are involved in the transport of LYMPH and LYMPHOCYTES. Capillaries, Lymphatic,Lymphatic Capillaries,Lymphatic Venules,Venules, Lymphatic,Capillary, Lymphatic,Lymphatic Capillary,Lymphatic Venule,Lymphatic Vessel,Venule, Lymphatic,Vessel, Lymphatic,Vessels, Lymphatic
D042783 Endothelial Cells Highly specialized EPITHELIAL CELLS that line the HEART; BLOOD VESSELS; and lymph vessels, forming the ENDOTHELIUM. They are polygonal in shape and joined together by TIGHT JUNCTIONS. The tight junctions allow for variable permeability to specific macromolecules that are transported across the endothelial layer. Capillary Endothelial Cells,Lymphatic Endothelial Cells,Vascular Endothelial Cells,Capillary Endothelial Cell,Cell, Capillary Endothelial,Cell, Endothelial,Cell, Lymphatic Endothelial,Cell, Vascular Endothelial,Cells, Capillary Endothelial,Cells, Endothelial,Cells, Lymphatic Endothelial,Cells, Vascular Endothelial,Endothelial Cell,Endothelial Cell, Capillary,Endothelial Cell, Lymphatic,Endothelial Cell, Vascular,Endothelial Cells, Capillary,Endothelial Cells, Lymphatic,Endothelial Cells, Vascular,Lymphatic Endothelial Cell,Vascular Endothelial Cell

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