VARIATION IN HTLV-I SEQUENCES FROM RABBIT-CELL LINES WITH DIVERSE INVIVO EFFECTS

被引：34

作者：

ZHAO, TM ^{[1
]}

ROBINSON, MA ^{[1
]}

SAWASDIKOSOL, S ^{[1
]}

SIMPSON, RM ^{[1
]}

KINDT, TJ ^{[1
]}

机构：

[1] NIAID,IMMUNOGENET LAB,TWINBROOK II FACIL,12441 PARKLAWN DR,ROCKVILLE,MD 20852

来源：

VIROLOGY | 1993年 / 195卷 / 01期

关键词：

D O I：

10.1006/viro.1993.1373

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Comparison of nucleotide sequences determined for HTLV-I integrated provirus from two rabbit cell lines, RH/K30 and RH/K34, revealed greater than 99% identity to one another. Substitutions encoding amino acid interchanges were observed in the gag, pol, and rex regions whereas the env and tax proteins were identical in the two lines. Comparison with the human prototypic HTLV-I sequence revealed considerably more variation, especially in the viral envelope region where the rabbit sequences are identical. The HTLV-I lines differed in their potential to cause disease in rabbits: injection of the RH/K34 cell line caused human adult T-cell leukemia/lymphoma-like (ATLL) disease which was fatal within 10 days, whereas all rabbits injected with the same or higher doses of RH/K30 survived with a low-grade leukemia that showed evidence of acute rejection. Correlation of lethality with viral sequence was tested by injection of rabbits with two other rabbit cell lines with HTLV-I provirus identical to RH/K34 in LTR, gag, and env regions. The fact that only one of these lines produced fatal disease suggests that pathogenic determinants lie outside of these regions or, alternatively, that the structure of the integrated virus is not the sole factor in the cell lines‘ability to cause ATLL-like disease. © 1993 American Health Foundation and Academic Press.

引用

页码：271 / 274

页数：4

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