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M9630105.TXT
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1996-02-27
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Document 0105
DOCN M9630105
TI Primary characterization of a herpesvirus agent associated with Kaposi's
sarcoma.
DT 9603
AU Moore PS; Gao SJ; Dominguez G; Cesarman E; Lungu O; Knowles DM; Garber
R; Pellett PE; McGeoch DJ; Chang Y; Division of Epidemiology, Columbia
University, New York, New York; 10032, USA.
SO J Virol. 1996 Jan;70(1):549-58. Unique Identifier : AIDSLINE
GENBANK/U40377
AB Detection of novel DNA sequences in Kaposi's sarcoma (KS) and
AIDS-related body cavity-based, non-Hodgkin's lymphomas suggests that
these neoplasms are caused by a previously unidentified human
herpesvirus. We have characterized this agent using a continuously
infected B-lymphocyte cell line derived from an AIDS-related lymphoma
and a genomic library made from a KS lesion. In this cell line, the
agent has a large episomal genome with an electrophoretic mobility
similar to that of 270-kb linear DNA markers during clamped homogeneous
electric field gel electrophoresis. A 20.7-kb region of the genome has
been completely sequenced, and within this region, 17 partial and
complete open reading frames are present; all except one have sequence
and positional homology to known gammaherpesvirus genes, including the
major capsid protein and thymidine kinase genes. Phylogenetic analyses
using both single genes and combined gene sets demonstrated that the
agent is a gamma-2 herpesvirus (genus Rhadinovirus) and is the first
member of this genus known to infect humans. Evidence for transient
viral transmission from infected to uninfected cells is presented, but
replication-competent virions have not been identified in infected cell
lines. Sera from patients with KS have specific antibodies directed
against antigens of infected cell lines, and these antibodies are
generally absent in sera from patients with AIDS without KS. These
studies define the agent as a new human herpesvirus provisionally
assigned the descriptive name KS-associated herpesvirus; its formal
designation is likely to be human herpesvirus 8.
DE Amino Acid Sequence Animal Base Sequence Cell Line Cohort Studies
DNA, Viral Gammaherpesvirinae/CLASSIFICATION/GENETICS/*ISOLATION &
PURIF Genome, Viral Human HIV Antibodies/BLOOD Lymphoma,
AIDS-Related/VIROLOGY Molecular Sequence Data Phylogeny Sarcoma,
Kaposi's/IMMUNOLOGY/*VIROLOGY Support, Non-U.S. Gov't Support, U.S.
Gov't, P.H.S. Tumor Cells, Cultured JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).