PMID- 10551799 OWN - NLM STAT- MEDLINE DCOM- 19991223 LR - 20181113 IS - 1052-2166 (Print) IS - 1555-3884 (Electronic) IS - 1052-2166 (Linking) VI - 8 IP - 2 DP - 1999 TI - Constitutive and inducible in vivo protein-DNA interactions at the tumor necrosis factor-alpha promoter in primary human T lymphocytes. PG - 115-27 AB - Tumor necrosis factor-alpha (TNF-alpha) is a key cytokine of lymphocytes with major regulatory functions in immunomodulation, chronic inflammation, and septic shock. However, only limited information on TNF promoter regulation in vivo in primary lymphocytes is available. To determine and compare protein-DNA interactions at the native TNF locus in primary lymphocytes, we analyzed the human TNF-alpha promoter by ligation-mediated polymerase chain reaction (LM-PCR) techniques. Accordingly, primary CD4+ T lymphocytes from peripheral blood were cultured in the presence of various stimuli and analyzed by LM-PCR. Inducible in vivo protein-DNA interactions at the TNF promoter were detected between -120 and -70 bp of the human TNF promoter relative to the transcriptional start site. This area includes binding sites for transcription factors such as ETS-1, NFAT, ATF-2/c-jun, SP-1/Egr-1, and NF-kappaB. In contrast, no protein-DNA interactions were observed at various binding sites with reported regulatory function in tumor cell lines such as the k2 element, the NFAT site at -160, the AP1 site at -50, and the SP1 site at -65. Additional mutagenesis and transfection studies demonstrated that NF-kappaB and CREB/AP-1 are important regulators of inducible TNF promoter activity in primary human T lymphocytes. These results provide novel insights into the complex regulation of TNF gene transcription in primary T lymphocytes in vivo by constitutive and inducible protein-DNA interactions that appear to be at least partially different compared to previously characterized tumor cell lines. FAU - Becker, C AU - Becker C AD - Laboratory of Immunology, I. Medical Clinic, University of Mainz, Germany. FAU - Barbulescu, K AU - Barbulescu K FAU - Wirtz, S AU - Wirtz S FAU - Meyer zum Buschenfelde, K H AU - Meyer zum Buschenfelde KH FAU - Pettersson, S AU - Pettersson S FAU - Neurath, M F AU - Neurath MF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Gene Expr JT - Gene expression JID - 9200651 RN - 0 (Transcription Factors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9007-49-2 (DNA) SB - IM MH - Base Sequence MH - Binding Sites MH - DNA/*metabolism MH - DNA Footprinting MH - Humans MH - Molecular Sequence Data MH - Mutagenesis, Site-Directed MH - Polymerase Chain Reaction MH - *Promoter Regions, Genetic MH - Response Elements MH - T-Lymphocytes/*metabolism MH - Transcription Factors/*metabolism MH - Tumor Necrosis Factor-alpha/biosynthesis/*genetics/*metabolism PMC - PMC6157389 EDAT- 1999/11/07 00:00 MHDA- 1999/11/07 00:01 PMCR- 2018/09/26 CRDT- 1999/11/07 00:00 PHST- 1999/11/07 00:00 [pubmed] PHST- 1999/11/07 00:01 [medline] PHST- 1999/11/07 00:00 [entrez] PHST- 2018/09/26 00:00 [pmc-release] AID - GE-8-115 [pii] PST - ppublish SO - Gene Expr. 1999;8(2):115-27.