Effects of soluble interleukin-1 receptor and tumor-necrosis factor receptor, respectively, on the IL-1- and TNF-α-induced DNA synthesis of acute myeloblastic leukemia blasts in vitro

2009 ◽  
Vol 53 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Anna Carter ◽  
Nuhad Haddad ◽  
Ilana Draxler ◽  
Ilana Tatarsky
Keyword(s):  
Tumor Necrosis Factor ◽  
Dna Synthesis ◽  
Tumor Necrosis ◽  
Interleukin 1 ◽  
Tumor Necrosis Factor Receptor ◽  
Acute Myeloblastic Leukemia ◽  
Tnf Α ◽  
Necrosis Factor

scholarly journals Mumps Virus SH Protein Inhibits NF-κB Activation by Interacting with Tumor Necrosis Factor Receptor 1, Interleukin-1 Receptor 1, and Toll-Like Receptor 3 Complexes

2017 ◽  
Vol 91 (18) ◽  
Author(s):  
Stephanie Franz ◽  
Paul Rennert ◽  
Maria Woznik ◽  
Josephine Grützke ◽  
Amy Lüdde ◽  
...  
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Interleukin 1 ◽  
Tumor Necrosis Factor Receptor ◽  
A549 Cells ◽  
Mumps Virus ◽  
Type I ◽  
Tnf Α ◽  
Infected Cells ◽  
Necrosis Factor

ABSTRACT The mumps virus (MuV) small hydrophobic protein (SH) is a type I membrane protein expressed in infected cells. SH has been reported to interfere with innate immunity by inhibiting tumor necrosis factor alpha (TNF-α)-mediated apoptosis and NF-κB activation. To elucidate the underlying mechanism, we generated recombinant MuVs (rMuVs) expressing the SH protein with an N-terminal FLAG epitope or lacking SH expression due to the insertion of three stop codons into the SH gene. Using these viruses, we were able to show that SH reduces the phosphorylation of IKKβ, IκBα, and p65 as well as the translocation of p65 into the nucleus of infected A549 cells. Reporter gene assays revealed that SH interferes not only with TNF-α-mediated NF-κB activation but also with IL-1β- and poly(I·C)-mediated NF-κB activation, and that this inhibition occurs upstream of the NF-κB pathway components TRAF2, TRAF6, and TAK1. Since SH coimmunoprecipitated with tumor necrosis factor receptor 1 (TNFR1), RIP1, and IRAK1, we hypothesize that SH exerts its inhibitory function by interacting with TNFR1, interleukin-1 receptor type 1 (IL-1R1), and TLR3 complexes in the plasma membrane of infected cells. IMPORTANCE The MuV SH has been shown to impede TNF-α-mediated NF-κB activation and is therefore thought to contribute to viral immune evasion. However, the mechanisms by which SH mediates NF-κB inhibition remained largely unknown. In this study, we show that SH interacts with TNFR1, IL-1R1, and TLR3 complexes in infected cells. We thereby not only shed light on the mechanisms of SH-mediated NF-κB inhibition but also reveal that SH interferes with NF-κB activation induced by interleukin-1β (IL-1β) and double-stranded RNA.

scholarly journals The LIM Protein Ajuba Influences Interleukin-1-Induced NF-κB Activation by Affecting the Assembly and Activity of the Protein Kinase Cζ/p62/TRAF6 Signaling Complex

2005 ◽  
Vol 25 (10) ◽  
pp. 4010-4022 ◽  
Author(s):  
Yungfeng Feng ◽  
Gregory D. Longmore
Keyword(s):  
Protein Kinase ◽  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Interleukin 1 ◽  
Tumor Necrosis Factor Receptor ◽  
Null Mouse ◽  
Lim Domain ◽  
Signaling Complex ◽  
Necrosis Factor

ABSTRACT The Zyxin/Ajuba family of cytosolic LIM domain-containing proteins has the potential to shuttle from sites of cell adhesion into the nucleus and thus can be candidate transducers of environmental signals. To understand Ajuba's role in signal transduction pathways, we performed a yeast two-hybrid screen with the LIM domain region of Ajuba. We identified the atypical protein kinase C (aPKC) scaffold protein p62 as an Ajuba binding partner. A prominent function of p62 is the regulation of NF-κB activation in response to interleukin-1 (IL-1) and tumor necrosis factor signaling through the formation of an aPKC/p62/TRAF6 multiprotein signaling complex. In addition to p62, we found that Ajuba also interacted with tumor necrosis factor receptor-associated factor 6 (TRAF6) and PKCζ. Ajuba recruits TRAF6 to p62 and in vitro activates PKCζ activity and is a substrate of PKCζ. Ajuba null mouse embryonic fibroblasts (MEFs) and lungs were defective in NF-κB activation following IL-1 stimulation, and in lung IKK activity was inhibited. Overexpression of Ajuba in primary MEFs enhances NF-κB activity following IL-1 stimulation. We propose that Ajuba is a new cytoso lic component of the IL-1 signaling pathway modulating IL-1-induced NF-κB activation by influencing the assembly and activity of the aPKC/p62/TRAF6 multiprotein signaling complex.

Serine phosphorylation of p60 tumor necrosis factor receptor by PKC-δ in TNF-α-activated neutrophils

2000 ◽  
Vol 279 (6) ◽  
pp. C2011-C2018 ◽  
Author(s):  
Laurie E. Kilpatrick ◽  
Young-Han Song ◽  
Michael W. Rossi ◽  
Helen M. Korchak
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Receptor ◽  
Time Frame ◽  
Serine Phosphorylation ◽  
Receptor Phosphorylation ◽  
Tnf Α ◽  
Factor Α ◽  
Necrosis Factor

Tumor necrosis factor-α (TNF-α) triggers degranulation and oxygen radical release in adherent neutrophils. The p60TNF receptor (p60TNFR) is responsible for proinflammatory signaling, and protein kinase C (PKC) is a candidate for the regulation of p60TNFR. Both TNF-α and the PKC-activator phorbol 12-myristate 13-acetate triggered phosphorylation of p60TNFR. Receptor phosphorylation was on both serine and threonine but not on tyrosine residues. The PKC-δ isotype is a candidate enzyme for serine phosphorylation of p60TNFR. Staurosporine and the PKC-δ inhibitor rottlerin inhibited TNF-α-triggered serine but not threonine phosphorylation. Serine phosphorylation was associated with receptor desensitization, as inhibition of PKC resulted in enhanced degranulation (elastase release). After neutrophil activation, PKC-δ was the only PKC isotype that associated with p60TNFR within the correct time frame for receptor phosphorylation. In vitro, only PKC-δ, but not the α-, βI-, βII-, or ζ-isotypes, was competent to phosphorylate the receptor, indicating that p60TNFR is a direct substrate for PKC-δ. These findings suggest a selective role for PKC-δ in negative regulation of the p60TNFR and of TNF-α-induced signaling.

IL-1β and TNF-α Regulate IL-6-type Cytokines in Gingival Fibroblasts

2008 ◽  
Vol 87 (6) ◽  
pp. 558-563 ◽  
Author(s):  
P. Palmqvist ◽  
P. Lundberg ◽  
I. Lundgren ◽  
L. Hänström ◽  
U.H. Lerner
Keyword(s):  
Tumor Necrosis Factor ◽  
Interleukin 6 ◽  
Leukemia Inhibitory Factor ◽  
Tumor Necrosis ◽  
Map Kinases ◽  
Tumor Necrosis Factor Receptor ◽  
Oncostatin M ◽  
Gingival Fibroblasts ◽  
Tnf Α ◽  
Necrosis Factor

Interleukin-6 (IL-6)-type cytokines are pleiotropic molecules capable of stimulating bone resorption and expressed by numerous cell types. In the present study, we tested the hypothesis that gingival fibroblasts may exert local osteotropic effects through production of IL-6 and related cytokines. IL-6-type cytokine expression and regulation by IL-1β and tumor necrosis factor-α (TNF-α) were studied in fibroblasts from the non-inflamed gingiva of healthy individuals. Constitutive mRNA expression of IL-6, IL-11, and leukemia inhibitory factor (LIF), but not of oncostatin M (OSM), was demonstrated, as was concentration-dependent stimulation of IL-6 and LIF mRNA and of protein by IL-1β and TNF-α. IL-11 mRNA and protein were concentration-dependently stimulated by IL-1β. The signaling pathway involved in IL-6 and LIF mRNA stimulation involved MAP kinases, but not NF-κB. The findings support the view that resident cells may influence the pathogenesis of periodontal disease through osteotropic IL-6-type cytokine production mediated by activation of MAP kinases. Abbreviations: IL-1α (interleukin-1α); IL-1β (interleukin-1β); IL-6 (interleukin-6); IL-11 (interleukin-11); LIF (leukemia inhibitory factor); OSM (oncostatin M); α(1)-coll. I (α(1)-collagen I); ALP (alkaline phosphatase); BMP-2 (bone morphogenetic protein-2); OC (osteocalcin); BSP (bone sialoprotein); TNFR I (tumor necrosis factor receptor I); TNFR II (tumor necrosis factor receptor II); IL-1R1 (interleukin-1 receptor 1); GAPDH (glyceraldehyde-3-phosphate dehydrogenase); RPL13A (ribosomal protein L13A); mRNA (messenger ribonucleic acid); cDNA (complementary deoxyribonucleic acid); PCR (polymerase chain-reaction); BCA (bicinchoninic acid); ELISA (enzyme-linked immunosorbent assay); α-MEM (α modification of Minimum Essential Medium); and FCS (fetal calf serum).

Epinephrine inhibits endotoxin-induced IL-1β production: roles of tumor necrosis factor-α and IL-10

1997 ◽  
Vol 273 (6) ◽  
pp. R1885-R1890 ◽  
Author(s):  
Tom Van Der Poll ◽  
Stephen F. Lowry
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Ex Vivo ◽  
Systemic Infection ◽  
Tnf Α ◽  
Cytokine Tumor Necrosis Factor ◽  
Dose Dependent Decrease ◽  
Factor Α ◽  
Necrosis Factor

Epinephrine has been found to inhibit the production of the proinflammatory cytokine tumor necrosis factor (TNF)-α and to enhance the production of anti-inflammatory cytokine interleukin (IL)-10. To determine the effect of epinephrine on IL-1β production, the following experiments were performed: 1) blood obtained from subjects at 4–21 h after the start of a continuous infusion of epinephrine (30 ng ⋅ kg−1⋅ min−1) produced less IL-1β after ex vivo stimulation with lipopolysaccharide (LPS), compared with blood drawn from subjects infused with saline; 2) in whole blood in vitro, epinephrine caused a dose-dependent decrease in LPS-induced IL-1β production, which was likely mediated via adrenergic receptors; and 3) inhibition of TNF and enhancement of IL-10 both contributed to epinephrine-induced inhibition of IL-1β production. Epinephrine, either endogenously produced or administered as a component of sepsis treatment, may attenuate excessive activity of proinflammatory cytokines early in the course of systemic infection.

scholarly journals Ectopic HOXB4 overcomes the inhibitory effect of tumor necrosis factor-α on Fanconi anemia hematopoietic stem and progenitor cells

Blood ◽  
2009 ◽  
Vol 113 (21) ◽  
pp. 5111-5120 ◽  
Author(s):  
Michael D. Milsom ◽  
Bernhard Schiedlmeier ◽  
Jeff Bailey ◽  
Mi-Ok Kim ◽  
Dandan Li ◽  
...  
Keyword(s):  
Tumor Necrosis Factor ◽  
Fanconi Anemia ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Α ◽  
Ectopic Expression ◽  
Hematopoietic Stem ◽  
Tnf Α ◽  
Factor Α ◽  
Necrosis Factor

AbstractEctopic delivery of HOXB4 elicits the expansion of engrafting hematopoietic stem cells (HSCs). We hypothesized that inhibition of tumor necrosis factor-α (TNF-α) signaling may be central to the self-renewal signature of HOXB4. Because HSCs derived from Fanconi anemia (FA) knockout mice are hypersensitive to TNF-α, we studied Fancc−/− HSCs to determine the physiologic effects of HOXB4 on TNF-α sensitivity and the relationship of these effects to the engraftment defect of FA HSCs. Overexpression of HOXB4 reversed the in vitro hypersensitivity to TNF-α of Fancc−/− HSCs and progenitors (P) and partially rescued the engraftment defect of these cells. Coexpression of HOXB4 and the correcting FA-C protein resulted in full correction compared with wild-type (WT) HSCs. Ectopic expression of HOXB4 resulted in a reduction in both apoptosis and reactive oxygen species in Fancc−/− but not WT HSC/P. HOXB4 overexpression was also associated with a significant reduction in surface expression of TNF-α receptors on Fancc−/− HSC/P. Finally, enhanced engraftment was seen even when HOXB4 was expressed in a time-limited fashion during in vivo reconstitution. Thus, the HOXB4 engraftment signature may be related to its effects on TNF-α signaling, and this pathway may be a molecular target for timed pharmacologic manipulation of HSC during reconstitution.

Tumor necrosis factor-α and interleukin-1 β levels in recurrent and persistent otitis media with effusion

2002 ◽  
Vol 126 (4) ◽  
pp. 417-422 ◽  
Author(s):  
Sertac Yetiser ◽  
Bulent Satar ◽  
Atilla Gumusgun ◽  
Faruk Unal ◽  
Yalcin Ozkaptan
Keyword(s):  
Tumor Necrosis Factor ◽  
Otitis Media ◽  
Tumor Necrosis ◽  
Otitis Media With Effusion ◽  
Interleukin 1 ◽  
Tertiary Referral Center ◽  
Adenoid Tissue ◽  
Tnf Α ◽  
Factor Α ◽  
Necrosis Factor

OBJECTIVE: Based on interleukin (IL)-1β and tumor necrosis factor (TNF)-α levels in effusions, our goals were to specify either recurrent or persistent otitis media with effusion (OME) is a mid stage in the development of chronic disease and to identify the factors that have an influence on cytokine levels. STUDY DESIGN: Samples from groups with recurrent (n = 15) and persistent (n = 39) OME were essayed for IL-1 β and TNF-α. Children were also grouped with respect to age, sex, quality of effusion, and the presence of pharyngeal adenoid tissue. SETTING: Tertiary referral center. RESULTS: In recurrent and persistent OME groups, IL-1β was higher than TNF-α ( P < 0.01). IL-β was higher in recurrent OME than in persistent OME ( P < 0.05). CONCLUSION: Recurrent OME seems to be closer to the chronic stage of the disease relative to persistent OME in terms of higher IL-1 β levels. Each exacerbation of acute disease in recurrent otitis media is likely to be mediated by IL-1 β. SIGNIFICANCE: We were able to clarify that recurrent OME is a stage that occurs before chronic OME. Therefore, the prevention of acute attacks in recurrent disease would also impede long-term damage to the middle ear.

scholarly journals Anti-Amnesic Effect of Walnut via the Regulation of BBB Function and Neuro-Inflammation in Aβ1-42-Induced Mice

Antioxidants ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 976
Author(s):  
Jong Min Kim ◽  
Uk Lee ◽  
Jin Yong Kang ◽  
Seon Kyeong Park ◽  
Eun Jin Shin ◽  
...  
Keyword(s):  
Tumor Necrosis Factor ◽  
Protective Effect ◽  
Tumor Necrosis ◽  
Juglans Regia ◽  
Interleukin 1 ◽  
Tumor Necrosis Factor Receptor ◽  
Heme Oxygenase 1 ◽  
Necrosis Factor Alpha ◽  
Amnesic Effect ◽  
Necrosis Factor

This study was conducted to assess the protective effect of walnut (Juglans regia L.) extract on amyloid beta (Aβ)1-42-induced institute of cancer research (ICR) mice. By conducting a Y-maze, passive avoidance, and Morris water maze tests with amyloidogenic mice, it was found that walnut extract ameliorated behavioral dysfunction and memory deficit. The walnut extract showed a protective effect on the antioxidant system and cholinergic system by regulating malondialdehyde (MDA) levels, superoxide dismutase (SOD) contents, reduced glutathione (GSH) contents, acetylcholine (ACh) levels, acetylcholinesterase (AChE) activity, and protein expression of AChE and choline acetyltransferase (ChAT). Furthermore, the walnut extract suppressed Aβ-induced abnormality of mitochondrial function by ameliorating reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and ATP contents. Finally, the walnut extract regulated the expression of zonula occludens-1 (ZO-1) and occludin concerned with blood–brain barrier (BBB) function, expression of tumor necrosis factor-alpha (TNF-α), tumor necrosis factor receptor 1 (TNFR1), phosphorylated c-Jun N-terminal kinase (p-JNK), phosphorylated nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor (p-IκB), cyclooxygenase-2 (COX-2), and interleukin 1 beta (IL-1β), related to neuroinflammation and the expression of phosphorylated protein kinase B (p-Akt), caspase-3, hyperphosphorylation of tau (p-tau), and heme oxygenase-1 (HO-1), associated with the Aβ-related Akt pathway.

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