1887

Abstract

Extremely low infectivity has hampered direct (cell-free) infection studies of human T-cell leukemia virus type I (HTLV-I). In order to break through this barrier, we examined the susceptibility of many kinds of cells to HTLV-I and found a feline kidney cell line, 8C, that is highly susceptible to HTLV-I and produced remarkable amounts of infectious progeny viruses. Tax1 protein encoded by HTLV-I is known as a transcription activator for viral and cellular genes. We found that the 8C cells expressing the Tax1 protein (8C/TaxWT cells) can produce more progeny viruses than 8C cells when the cells were exposed to cell-free HTLV-I. A large number of syncytia were also induced in these cells. Here, we propose 8C/TaxWT cells as a useful tool to study the cell-free HTLV-I infection.

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2012-03-01
2020-05-28
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