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- W2013805518 abstract "Heat shock is a known transcriptional activator of human immunodeficiency virus type 1 (HIV1) long terminal repeat (LTR). However, HIV1 LTR suppression can occur under hyperthermic conditions. To investigate this phenomenon, a series of HIV1 LTR deletion luciferase constructs were generated and tested in cell culture in combination with a mutant heat shock factor 1 (HSF1+), which is transcriptionally active in the absence of heat stress. HSF1+ suppressed the activity of a minimal HIV1 LTR promoter, which contained NF-kappaB, Sp1, and tat consensus sequences. Electromobility shift assays showed nuclear protein-DNA complex formation with a Sp1 consensus sequence. Immunoprecipitation of nuclear extracts with Sp1 antibody did not affect nuclear protein-Sp1 oligonucleotide complex formation. In contrast, no complexes were formed with the Sp1 consensus sequence when the HSF protein was immunoprecipitated. These experiments indicate that modified heat shock factor can suppress HIV1 promoter activity by a mechanism involving interaction with Sp1 elements in the HIV1 promoter. The ability of HSF1+ to suppress HIV1 promoter activity suggests that HSF1+ could serve as a tool for the treatment of AIDS." @default.
- W2013805518 created "2016-06-24" @default.
- W2013805518 creator A5016178832 @default.
- W2013805518 date "2003-08-01" @default.
- W2013805518 modified "2023-10-14" @default.
- W2013805518 title "Regulation of the HIV1 long terminal repeat by mutant heat shock factor" @default.
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- W2013805518 doi "https://doi.org/10.1016/s0014-4827(03)00186-1" @default.
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