Enhanced proteolytic processing of the human immunodeficiency virus type 1 envelope protein in murine Ltk(-) cells.
Enhanced proteolytic processing of the human immunodeficiency virus type 1 envelope protein in murine Ltk(-) cells.
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鼠 Ltk(-) 细胞中人类免疫缺陷病毒 1 型包膜蛋白的增强蛋白水解加工。
DOI:
10.1089/aid.1995.11.81
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
Esteban,M
中科院分区:
文献类型:
--
作者:
Rodriguez,D;Rodriguez,JR;Esteban,M
Proteolytic processing of the human immunodeficiency virus type 1 (HIV-1) envelope (Env) precursor glycoprotein (gp 160) to produce the mature gp120 and gp41 proteins is required for virus infection and virus-induced cell fusion. It has also been suggested that cleavage of gp120 at the immunodominant V3 loop region is required for virus-to-cell and cell-to-cell fusion. In this investigation we have studied the proteolytic processing of the HIV-1 Env in cells of various origins (human, monkey, and mouse) infected with a vaccinia virus recombinant expressing the entire gp160 protein (VV-env-1). We have observed that in murine Ltk(-) cells, in addition to the proteolytic cleavage of gp160 at the gp 120/gp41 site, there is also extensive intracellular proteolytic processing of gp160 at the V3 loop and at a novel site located at the C terminus of gp41. Similar proteolytic processing of the Env precursor was observed after treatment of extracts of VV-env-1-infected monkey cells with thrombin, a trypsin-like protease that has been shown to cleave the gp120 at the V3 loop. Our findings suggest that murine Ltk(-) cells could be a good model system for structural studies of Env with different HIV isolates and in searches for proteinase inhibitors that could prevent HIV-1 infection of susceptible cells by blocking proteolysis of Env.
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影响因子:
3.8
作者:
Elaine Kinney Thomas;Jonathan N. Weber;Jan McClure;P. Clapham;Mitra C. Singhal;M. Kathleen Shriver;R. Weiss
通讯作者:
R. Weiss
影响因子:
3.5
作者:
H. Kido;A. Fukutomi;N. Katunuma
通讯作者:
N. Katunuma
影响因子:
56.9
作者:
MCDOUGAL, JS;KENNEDY, MS;NICHOLSON, JKA
通讯作者:
NICHOLSON, JKA
影响因子:
56.9
作者:
KOWALSKI, M;POTZ, J;SODROSKI, J
通讯作者:
SODROSKI, J
影响因子:
3.8
作者:
R. H. Meloen;Rob M. J. Liskamp;Jaap Goudsmit
通讯作者:
Jaap Goudsmit