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6801
[ "To", "begin", "to", "elucidate", "the", "mechanisms", "that", "regulate", "the", "transcription", "of", "cytokine", "genes", ",", "we", "wanted", "to", "determine", "which", "transcription", "factors", "are", "activated", "by", "PGN", "in", "mouse", "RAW264.7", "and", "human", "THP-1", "macrophage", "cells", "." ]
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6802
[ "Our", "results", "demonstrated", "that", ":", "(", "i", ")", "PGN", "induced", "phosphorylation", "of", "the", "transcription", "factors", "ATF-1", "and", "CREB", ";", "(", "ii", ")", "ATF-1", "and", "CREB", "bound", "DNA", "as", "a", "dimer", "and", "induced", "transcriptional", "activation", "of", "a", "CRE", "reporter", "plasmid", ",", "which", "was", "inhibited", "by", "dominant", "negative", "CREB", "and", "ATF-1", ";", "(", "iii", ")", "PGN", "induced", "phosphorylation", "of", "c-Jun", ",", "protein", "synthesis", "of", "JunB", "and", "c-Fos", ",", "and", "transcriptional", "activation", "of", "the", "AP-1", "reporter", "plasmid", ",", "which", "was", "inhibited", "by", "dominant", "negative", "c-Fos", ";", "and", "(", "iv", ")", "PGN-induced", "activation", "of", "CREB/ATF", "and", "AP-1", "was", "mediated", "through", "CD14", "." ]
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6803
[ "This", "is", "the", "first", "study", "to", "demonstrate", "activation", "of", "CREB/ATF", "and", "AP-1", "transcription", "factors", "by", "PGN", "or", "by", "any", "other", "component", "of", "Gram-positive", "bacteria", "." ]
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6804
[ "Glucocorticoid", "receptors", "are", "down-regulated", "in", "inflamed", "colonic", "mucosa", "but", "not", "in", "peripheral", "blood", "mononuclear", "cells", "from", "patients", "with", "inflammatory", "bowel", "disease", "[", "see", "comments", "]" ]
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6805
[ "BACKGROUND", ":", "Growing", "evidence", "indicates", "that", "the", "immune", "system", "and", "the", "hypothalamic-pituitary-adrenal", "system", "are", "linked", "by", "several", "mechanisms", ",", "for", "example", "intracellular", "glucocorticoid", "receptors", "(", "hGR", ")", "." ]
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6806
[ "Glucocorticoids", "are", "the", "standard", "treatment", "of", "acute", "attacks", "of", "inflammatory", "bowel", "disease", "(", "IBD", ")", "." ]
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6807
[ "Binding", "of", "glucocorticoids", "to", "hGR", "down-regulates", "the", "transcription", "of", "inflammatory", "genes", "that", "can", "propagate", "IBD", "." ]
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6808
[ "PATIENTS", "AND", "METHODS", ":", "IBD", "patients", "were", "either", "treated", "with", "5-60", "mg", "of", "prednisolone", "for", "more", "than", "1", "week", "or", "were", "without", "glucocorticoid", "treatment", "for", "more", "than", "4", "weeks", "." ]
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6809
[ "hGR", "levels", "were", "determined", "from", "isolated", "cytosol", "of", "peripheral", "blood", "mononuclear", "cells", "(", "PBMCs", ")", "or", "mucosal", "biopsies", "using", "a", "radioassay", "with", "[", "3H", "]", "-dexamethasone", "." ]
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6810
[ "Interleukin", "(", "IL", ")", "6", "levels", "were", "determined", "by", "enzyme-linked", "immunosorbent", "assay", "(", "ELISA", ")", "." ]
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6811
[ "RESULTS", ":", "The", "systemic", "(", "PBMC", ")", "hGR", "levels", "of", "corticosteroid-treated", "IBD", "patients", "were", "significantly", "lower", "than", "those", "of", "control", "subjects", "(", "59.6", "+/-", "57.1", "dpm", "mg-1", "cytosol", "protein", "vs", "." ]
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6812
[ "227.0", "+/-", "90.8", "dpm", "mg-1", "cytosol", "protein", ",", "P", "=", "0.007", ")", "and", "IBD", "patients", "not", "receiving", "glucocorticoid", "treatment", "(", "179.7", "+/-", "171.3", "dpm", "mg-1", "cytosol", "protein", ",", "P", "=", "0.002", ")", "." ]
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6813
[ "Systemic", "hGR", "levels", "in", "untreated", "IBD", "patients", "did", "not", "differ", "significantly", "from", "those", "in", "control", "subjects", "." ]
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6814
[ "In", "patients", "with", "connective", "tissue", "diseases", ",", "systemic", "hGR", "levels", "were", "also", "found", "to", "be", "decreased", "in", "the", "absence", "of", "glucocorticoid", "treatment", "." ]
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6815
[ "Systemic", "hGR", "levels", "in", "patients", "with", "Crohn", "'s", "disease", "(", "CD", ")", "treated", "with", "steroids", "(", "66.6", "+/-", "61.0", "dpm", "mg-1", "cytosol", "protein", ")", "were", "not", "different", "from", "those", "in", "patients", "with", "ulcerative", "colitis", "(", "UC", ")", "(", "56.1", "+/-", "51.6", "dpm", "mg-1", "cytosol", "protein", ")", "." ]
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6816
[ "In", "contrast", "to", "these", "findings", ",", "mucosal", "hGR", "levels", "were", "significantly", "decreased", "in", "both", "steroid-treated", "(", "18.0", "+/-", "15.5", ")", "and", "not", "steroid-treated", "(", "37.8", "+/-", "30.5", ")", "patients", "compared", "with", "control", "subjects", "(", "125.6", "+/-", "97.1", ";", "P", "=", "0.00009", "and", "P", "=", "0.0008", "respectively", ")", "." ]
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6817
[ "IL-6", "levels", "in", "all", "IBD", "groups", "with", "and", "without", "steroids", "were", "significantly", "different", "from", "those", "in", "control", "subjects", "." ]
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6818
[ "CONCLUSION", ":", "In", "IBD", "there", "is", "no", "difference", "in", "systemic", "hGR", "levels", "between", "not", "steroid-treated", "patients", "and", "control", "subjects", ",", "in", "spite", "of", "inflammatory", "activity", "(", "IL-6", ")", "." ]
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6819
[ "Mucosal", "hGR", "levels", "were", "decreased", "independently", "of", "treatment", ",", "probably", "leading", "to", "a", "decreased", "protection", "against", "NF-kappaB", "action", "in", "the", "intestinal", "mucosa", "." ]
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6820
[ "ICSAT", "overexpression", "is", "not", "sufficient", "to", "cause", "adult", "T-cell", "leukemia", "or", "multiple", "myeloma", "." ]
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6821
[ "ICSAT", "(", "Interferon", "Consensus", "Sequence", "binding", "protein", "for", "Activated", "T", "cells", ")", "is", "a", "lymphocyte-specific", "member", "of", "the", "interferon", "regulatory", "factor", "(", "IRF", ")", "family", "of", "transcription", "factors", ",", "originally", "identified", "through", "Southwestern", "screening", "of", "the", "ATL", "(", "Adult", "T-cell", "leukemia", ")", "-16T", "expression", "library", "." ]
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6822
[ "In", "this", "study", ",", "we", "created", "transgenic", "mice", "overexpressing", "ICSAT", "in", "lymphocytes", "." ]
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6823
[ "Although", "spontaneous", "tumorigenesis", "was", "not", "observed", ",", "IL-2", "production", "with", "Concanavalin", "A", "stimulation", "was", "significantly", "increased", "in", "transgenic", "mice", "overexpressing", "ICSAT", "." ]
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6824
[ "ICSAT", "overexpression", "in", "lymphocytes", "seems", "insufficient", "for", "the", "leukemogenesis", "of", "ATL", "or", "multiple", "myeloma", "(", "MM", ")", ",", "however", ",", "it", "may", "regulate", "T", "cell", "activation", "and", "its", "overexpression", "may", "lead", "to", "leukemogenesis", "via", "controlling", "IL-2", "production", "." ]
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6825
[ "Copyright", "1999", "Academic", "Press", "." ]
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6826
[ "Altered", "memory", "T", "cell", "differentiation", "in", "patients", "with", "early", "rheumatoid", "arthritis", "." ]
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6827
[ "The", "chronic", "immune", "response", "in", "rheumatoid", "arthritis", "(", "RA", ")", "might", "be", "driven", "by", "activated", "Th1", "cells", "without", "sufficient", "Th2", "cell", "differentiation", "to", "down-modulate", "inflammation", "." ]
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6828
[ "To", "test", "whether", "disordered", "memory", "T", "cell", "differentiation", "contributes", "to", "the", "typical", "Th1-dominated", "chronic", "inflammation", "in", "RA", "we", "investigated", "differentiation", "of", "resting", "CD4+", "memory", "T", "cells", "in", "patients", "with", "early", "(", "6", "wk", "to", "12", "mo", ")", "untreated", "RA", "and", "in", "age-", "and", "sex-matched", "healthy", "controls", "in", "vitro", "." ]
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6829
[ "No", "difference", "in", "cytokine", "secretion", "profiles", "of", "freshly", "isolated", "memory", "T", "cells", "was", "detected", "between", "patients", "and", "controls", "." ]
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6830
[ "A", "cell", "culture", "system", "was", "then", "employed", "that", "permitted", "the", "differentiation", "of", "Th", "effectors", "from", "resting", "memory", "T", "cells", "by", "short", "term", "priming", "." ]
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6831
[ "Marked", "differences", "were", "found", "in", "response", "to", "priming", "." ]
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6832
[ "Th2", "cells", "could", "be", "induced", "in", "all", "healthy", "controls", "by", "priming", "with", "anti-CD28", "in", "the", "absence", "of", "TCR", "ligation", "." ]
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6833
[ "By", "contrast", ",", "priming", "under", "those", "conditions", "resulted", "in", "Th2", "differentiation", "in", "only", "9", "of", "24", "RA", "patients", "." ]
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6834
[ "Exogenous", "IL-4", "could", "overcome", "the", "apparent", "Th2", "differentiation", "defect", "in", "seven", "patients", "but", "was", "without", "effect", "in", "the", "remaining", "eight", "patients", "." ]
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6835
[ "In", "all", "patients", "a", "marked", "decrease", "in", "IL-2-producing", "cells", "and", "a", "significant", "increase", "in", "well-differentiated", "Th1", "cells", "that", "produced", "IFN-gamma", "but", "not", "IL-2", "were", "evident", "after", "priming", "with", "anti-CD3", "and", "anti-CD28", "." ]
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6836
[ "The", "data", "suggest", "that", "CD4+", "memory", "T", "cells", "from", "patients", "with", "early", "untreated", "RA", "manifest", "an", "intrinsic", "abnormality", "in", "their", "ability", "to", "differentiate", "into", "specific", "cytokine-producing", "effector", "cells", "that", "might", "contribute", "to", "the", "characteristic", "Th1-dominated", "chronic", "(", "auto", ")", "immune", "inflammation", "in", "RA", "." ]
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6837
[ "The", "intracellular", "parasite", "Theileria", "parva", "protects", "infected", "T", "cells", "from", "apoptosis", "." ]
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6838
[ "Parasites", "have", "evolved", "a", "plethora", "of", "strategies", "to", "ensure", "their", "survival", "." ]
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6839
[ "The", "intracellular", "parasite", "Theileria", "parva", "secures", "its", "propagation", "and", "spreads", "through", "the", "infected", "animal", "by", "infecting", "and", "transforming", "T", "cells", ",", "inducing", "their", "continuous", "proliferation", "and", "rendering", "them", "metastatic", "." ]
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6840
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6841
[ "The", "biological", "significance", "of", "NF-kappaB", "activation", "in", "T.", "parva-infected", "cells", ",", "however", ",", "has", "not", "yet", "been", "defined", "." ]
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6842
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6843
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6844
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6845
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6846
[ "A", "polymorphism", "that", "affects", "OCT-1", "binding", "to", "the", "TNF", "promoter", "region", "is", "associated", "with", "severe", "malaria", "[", "see", "comments", "]" ]
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6847
[ "Genetic", "variation", "in", "cytokine", "promoter", "regions", "is", "postulated", "to", "influence", "susceptibility", "to", "infection", ",", "but", "the", "molecular", "mechanisms", "by", "which", "such", "polymorphisms", "might", "affect", "gene", "regulation", "are", "unknown", "." ]
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6848
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6849
[ "The", "OCT-1-binding", "genotype", ",", "found", "in", "approximately", "5", "%", "of", "Africans", ",", "is", "associated", "with", "fourfold", "increased", "susceptibility", "to", "cerebral", "malaria", "in", "large", "case-control", "studies", "of", "West", "African", "and", "East", "African", "populations", ",", "after", "correction", "for", "other", "known", "TNF", "polymorphisms", "and", "linked", "HLA", "alleles", "." ]
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6850
[ "UV-induced", "CYP1A1", "gene", "expression", "in", "human", "cells", "is", "mediated", "by", "tryptophan", "." ]
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6851
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6852
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6853
[ "To", "evaluate", "the", "effect", "of", "UV", "light", "on", "cytochrome", "P4501A1", "gene", "expression", ",", "we", "studied", "the", "induction", "of", "CYP1A1", "mRNA", "by", "UV", "irradiation", "of", "cultured", "human", "keratinocytes", "(", "HaCaT", "cell", "line", ")", ",", "primary", "human", "blood", "lymphocytes", "and", "mouse", "Hepa-1", "cells", "." ]
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6854
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6855
[ "A", "semiquantitative", "reverse", "transcriptase", "-linked", "polymerase", "chain", "reaction", "(", "RT-PCR", ")", "was", "used", "for", "analysis", "of", "gene", "expression", "in", "the", "treated", "cells", "." ]
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6856
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6857
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6858
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6859
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6860
[ "Together", ",", "these", "results", "indicate", "that", "UV-induced", "CYP1A1", "gene", "expression", "in", "mammalian", "cells", "is", "mediated", "by", "an", "Ah", "receptor", "ligand", "formed", "from", "tryptophan", "." ]
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6861
[ "Thus", ",", "the", "photoproducts", "of", "tryptophan", "are", "suggested", "to", "be", "mediators", "of", "light", "via", "binding", "to", "the", "Ah", "receptor", "and", "as", "such", "also", "could", "have", "a", "role", "in", "light-regulated", "biological", "rhythms", "." ]
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6862
[ "Repression", "by", "Ikaros", "and", "Aiolos", "is", "mediated", "through", "histone", "deacetylase", "complexes", "." ]
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6863
[ "Here", "we", "show", "that", "the", "lymphoid", "lineage-determining", "factors", "Ikaros", "and", "Aiolos", "can", "function", "as", "strong", "transcriptional", "repressors", "." ]
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6864
[ "This", "function", "is", "mediated", "through", "two", "repression", "domains", "and", "is", "dependent", "upon", "the", "promoter", "context", "and", "cell", "type", "." ]
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6865
[ "Repression", "by", "Ikaros", "proteins", "correlates", "with", "hypo-acetylation", "of", "core", "histones", "at", "promoter", "sites", "and", "is", "relieved", "by", "histone", "deacetylase", "inhibitors", "." ]
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6866
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6867
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6868
[ "Protein", "kinase", "B", "(", "c-Akt", ")", ",", "phosphatidylinositol", "3-kinase", ",", "and", "STAT5", "are", "activated", "by", "erythropoietin", "(", "EPO", ")", "in", "HCD57", "erythroid", "cells", "but", "are", "constitutively", "active", "in", "an", "EPO-independent", ",", "apoptosis-resistant", "subclone", "(", "HCD57-SREI", "cells", ")", "." ]
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6869
[ "We", "found", "that", "erythropoietin", "(", "EPO", ")", "and", "stem", "cell", "factor", "(", "SCF", ")", "activated", "protein", "kinase", "B", "(", "PKB/Akt", ")", "in", "EPO-dependent", "HCD57", "erythroid", "cells", "." ]
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6870
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6871
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6872
[ "PI3-kinase", "activity", "was", "an", "upstream", "activator", "of", "PKB/Akt", "because", "the", "PI3-kinase", "inhibitor", "LY294002", "blocked", "both", "constitutive", "PKB/Akt", "and", "factor-dependent", "PKB/Akt", "activity", "." ]
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6873
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6874
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6875
[ "This", "result", "suggested", "that", "PKB/PI3-kinase", "activity", "is", "necessary", "but", "not", "sufficient", "to", "promote", "viability", "and/or", "proliferation", "." ]
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6876
[ "Constitutive", "STAT5", "activity", ",", "activated", "through", "an", "unknown", "pathway", "not", "including", "JAK2", "or", "EPOR", ",", "may", "act", "in", "concert", "with", "the", "constitutive", "PI3-kinase", "/PKB/Akt", "pathway", "to", "protect", "the", "EPO-independent", "HCD57-SREI", "cells", "from", "apoptosis", "and", "promote", "limited", "proliferation", "." ]
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6877
[ "Disruption", "of", "alpha", "beta", "but", "not", "of", "gamma", "delta", "T", "cell", "development", "by", "overexpression", "of", "the", "helix-loop-helix", "protein", "Id3", "in", "committed", "T", "cell", "progenitors", "." ]
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6878
[ "Enforced", "expression", "of", "Id3", ",", "which", "has", "the", "capacity", "to", "inhibit", "many", "basic", "helix-loop-helix", "(", "bHLH", ")", "transcription", "factors", ",", "in", "human", "CD34", "(", "+", ")", "hematopoietic", "progenitor", "cells", "that", "have", "not", "undergone", "T", "cell", "receptor", "(", "TCR", ")", "gene", "rearrangements", "inhibits", "development", "of", "the", "transduced", "cells", "into", "TCRalpha", "beta", "and", "gamma", "delta", "cells", "in", "a", "fetal", "thymic", "organ", "culture", "(", "FTOC", ")", "." ]
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6879
[ "Here", "we", "document", "that", "overexpression", "of", "Id3", ",", "in", "progenitors", "that", "have", "initiated", "TCR", "gene", "rearrangements", "(", "pre-T", "cells", ")", ",", "inhibits", "development", "into", "TCRalpha", "beta", "but", "not", "into", "TCRgamma", "delta", "T", "cells", "." ]
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6880
[ "Furthermore", ",", "Id3", "impedes", "expression", "of", "recombination", "activating", "genes", "and", "downregulates", "pre-Talpha", "mRNA", "." ]
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6881
[ "These", "observations", "suggest", "possible", "mechanisms", "by", "which", "Id3", "overexpression", "can", "differentially", "affect", "development", "of", "pre-T", "cells", "into", "TCRalpha", "beta", "and", "gamma", "delta", "cells", "." ]
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6882
[ "We", "also", "observed", "that", "cell", "surface", "CD4", "(", "-", ")", "CD8", "(", "-", ")", "CD3", "(", "-", ")", "cells", "with", "rearranged", "TCR", "genes", "developed", "from", "Id3-transduced", "but", "not", "from", "control-transduced", "pre-T", "cells", "in", "an", "FTOC", "." ]
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6883
[ "These", "cells", "had", "properties", "of", "both", "natural", "killer", "(", "NK", ")", "and", "pre-T", "cells", "." ]
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6884
[ "These", "findings", "suggest", "that", "bHLH", "factors", "are", "required", "to", "control", "T", "cell", "development", "after", "the", "T/NK", "developmental", "checkpoint", "." ]
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6885
[ "HIV-1", "reactivation", "in", "resting", "peripheral", "blood", "mononuclear", "cells", "of", "infected", "adults", "upon", "in", "vitro", "CD4", "cross-linking", "by", "ligands", "of", "the", "CDR2-loop", "in", "extracellular", "domain", "1", "." ]
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6886
[ "HIV-1", "infects", "resting", "peripheral", "blood", "mononuclear", "cells", "(", "PBMCs", ")", "but", "remains", "inactive", "state", "until", "subsequent", "cell", "activation", "." ]
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6887
[ "We", "have", "demonstrated", "that", "the", "cross-linking", "of", "cell", "surface", "CD4", "by", "gp120-anti-gp120", "immune", "complexes", "or", "heat-inactivated", "HIV-1", "(", "iHIV-1", ")", "is", "sufficient", "to", "trigger", "activation", "signals", "leading", "to", "virus", "reactivation", "(", "9", ")", "." ]
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6888
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6889
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6890
[ "When", "submitted", "to", "an", "in", "vitro", "CD4", "cross-linking", "by", "iHIV-1", ",", "PBMCs", "from", "HIV-1-infected", "patients", "were", "found", "to", "produce", "virus", "." ]
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6891
[ "This", "viral", "reactivation", "was", "associated", "with", "increased", "NF-kappaB", "nuclear", "translocation", "in", "patients", "'", "PBMCs", "." ]
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6892
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6893
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6894
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6895
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6896
[ "Signaling", "through", "the", "lymphotoxin-beta", "receptor", "stimulates", "HIV-1", "replication", "alone", "and", "in", "cooperation", "with", "soluble", "or", "membrane-bound", "TNF-alpha", "." ]
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6897
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6898
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6899
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6900
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