Previous Article | Next Article ![]()
J. Virol., 10 1996, 7322-7326, Vol 70, No. 10
RE Sutton and DR Littman
Studies of human T-cell leukemia virus type 1 (HTLV-1) have been hampered
by the difficulty of achieving high cell-free and cell- associated
infectious titers. Current retroviral pseudotyping systems using the HTLV-1
envelope generate titers of less than 200 infectious particles per ml. We
describe here an improved system for pseudotyping using a defective human
immunodeficiency virus (HIV) type 1 genome in combination with HTLV-1 env
in 293T producer cells. Introduction of additional copies of rev and
treatment of cells with sodium butyrate resulted in a cell-associated titer
of 10(5)/ml and cell-free titers of greater than 10(4)/ml . By using this
system, we found that the host range of HTLV-1 is even greater than
previously suspected. Earlier studies which assigned a chromosomal location
for the HTLV-1 receptor may therefore reflect cell-to-cell variation in
receptor number rather than the absolute presence or absence of a receptor.
The generation of higher-titer HIV(HTLV-1) may facilitate identification of
the cellular receptor and investigations of the pathophysiology of HTLV-1
infection.
Copyright © 1996, American Society for Microbiology
Broad host range of human T-cell leukemia virus type 1 demonstrated with an improved pseudotyping system
Howard Hughes Medical Institute, Stanford University, California 94305, USA.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»