Transcription Factor NF-κB: An Update on Intervention Strategies

Panday, Arvind; Inda, María Eugenia; Bagam, Prathyusha; Sahoo, Malaya K.; Osorio, Diana; Batra, Sanjay

doi:10.1007/s00005-016-0405-y

Cited by 122 publications

(84 citation statements)

References 162 publications

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“…GSK-3β was phosphorylated when the signaling pathway of PI3K/ AKT is activated. NF-κB is found to be involved in cellular processes and to control DNA transcription in almost all animal cell types [28]. A dysregulated NF-κB is linked to cancer, inflammation, autoimmune disease, and etc .…”

Section: Discussionmentioning

confidence: 99%

LncRNA GAS5 Represses Osteosarcoma Cells Growth and Metastasis via Sponging MiR-203a

Wang

Kong²

2018

Cell Physiol Biochem

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Background/Aims: LncRNA GAS5, a growth suppressor, has been reported to exert anti-tumor actions in various cancers, whereas the exact mechanism underling the anti-tumor action is still unclear. This study was aimed to investigate the effect of lncRNA GAS5 on osteosarcoma and tried to decode the underling mechanisms. Methods: Expressions of lncRNA GAS5 in MG-63 cells were silenced by shRNA transfection, while were overexpressed by vector transfection. Cell viability, migration, invasion and apoptosis were respectively assessed by MTT, Transwell assay and flow cytometry. Regulations between lncRNA GAS5 and miR-203a, as well as between miR-203a and TIMP2 were detected by qPCR, western blot and dual luciferase activity assay. Results: LncRNA GAS5 was down-regulated in MG-63 and OS-732 cells compared to hFOB1.19 cells. Silence of lncRNA GAS5 significantly promoted MG-63 cells viability, migration and invasion, and up-regulated Cyclin D1, Cyclin B1, CDK1 and CDK4 expressions. miR-203a was negatively regulated by lncRNA GAS5. The promoting activities of lncRNA GAS5 silence on MG-63 cells growth and metastasis were reversed by miR-203a suppression. TIMP2 was a target of miR-203a and the anti-growth and anti-metastasis actions of miR-203a suppression were reversed by TIMP2 silence. Further, lncRNA GAS5 silence, miR-203a overexpression, and TIMP2 silence could activate PI3K/AKT/GSK3β signaling while block NF-κB signaling. Conclusion: LncRNA GAS5 might be a tumor suppressor in osteosarcoma via sponging miR-203a, sequestering miR-203a away from TIMP2.

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Section: Discussionmentioning

confidence: 99%

LncRNA GAS5 Represses Osteosarcoma Cells Growth and Metastasis via Sponging MiR-203a

Wang

Kong²

2018

Cell Physiol Biochem

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“…It is thought that NF-κB is generally involved in IL-8 gene expression [37], but in our study the addition of an NF-κB inhibitor did not reduce IL-17F-induced IL-8 expression. Consistent with this, previous reports have demonstrated that cadmium or rhinovirus induced IL-8 expression through an NF-κB-independent pathway in airway epithelial cells [38, 39].…”

Section: Discussioncontrasting

confidence: 85%

Transcription Elongation Factor P-TEFb Is Involved in IL-17F Signaling in Airway Smooth Muscle Cells

Nakajima

Kawaguchi

Matsuyama

et al. 2018

Int Arch Allergy Immunol

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Background: IL-17F is involved in the pathogenesis of several inflammatory diseases, including asthma and COPD. However, the effects of steroids on the function of IL-17F signaling mechanisms are largely unknown. One of the transcription elongation factors, positive transcription elongation factor b (P-TEFb) composed of cyclin T1 and cyclin-dependent kinase 9 (CDK9), is known as a novel checkpoint regulator of gene expression via bromodomain-containing protein 4 (Brd4). Methods: Human airway smooth muscle cells were stimulated with IL-17F and the expression of IL-8 was evaluated by real-time PCR and ELISA. Next, the phosphorylation of CDK9 was determined by Western blotting. The CDK9 inhibitor and short interfering RNAs (siRNAs) targeting Brd4, cyclin T1, and CDK9 were used to identify the effect on IL-17F-induced IL-8 expression. Finally, the effect of steroids and its signaling were evaluated. Results: IL-17F markedly induced the transcription of the IL-8 gene and the expression of the protein. Pretreatment of CDK9 inhibitor and transfection of siRNAs targeting CDK9 markedly abrogated IL-17F-induced IL-8 production. Transfection of siRNAs targeting Brd4 and cyclin T1 diminished IL-17F-induced phosphorylation of CDK9 and IL-8 production. Moreover, budesonide decreased CDK9 phosphorylation and markedly inhibited IL-17F-induced IL-8 production. Conclusions: This is the first report that P-TEFb is involved in IL-17F-induced IL-8 expression and that steroids diminish it via the inhibition of CDK9 phosphorylation. IL-17F and P-TEFb might be novel therapeutic targets for airway inflammatory diseases.

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“…When receiving external stimuli, the inhibitor of NF-κB kinase (IKK) is activated to phosphorylate IκB, and then promotes the ubiquitination and degradation of IκB. Subsequently, p65/p50 heterodimers are released to translocate into the nucleus, and regulate the transcription of the downstream genes [21, 22]. Postmortem demonstrated that the proportion of NF-κB (p65)-immunoreactive dopaminergic neurons in idiopathic PD patients was 70-fold higher than that in control subjects [23].…”

Section: Discussionmentioning

confidence: 99%

Glaucocalyxin B Alleviates Lipopolysaccharide-Induced Parkinson’s Disease by Inhibiting TLR/NF-κB and Activating Nrf2/HO-1 Pathway

Zheng

Liu

et al. 2017

Cell Physiol Biochem

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Background/Aims: Parkinson’s disease (PD) is a common neurodegenerative disease in the old population, characterized by dopaminergic neuron loss, inflammation and oxidative stress injury in the substantia nigra. Glaucocalyxin B (GLB), an ent-kauranoid diterpenoid isolated from Rabdosia japonica, has anti-inflammation and anti-tumor effects. However, its effects on PD remain unclear. Methods: PD was introduced in rats via injection of lipopolysaccharide (LPS) into cerebral corpus striatum, and GLB was given intracerebroventricularly to these rats. Their walking, climbing and sensory states were detected by Stepping, Whisker and Cylinder Tests. The expression of tyrosine hydroxylase (TH), glial fibrillary acidic protein (GFAP), CD11b and ionized calcium binding adaptor molecule (IBA)-1 were detected by immunohischemical staining. The levels of a series of inflammatory factors, oxidative stress-related factors and apoptosis-related factors were measured by real-time PCR, immunoblotting and ELISA. In addition, Toll-like receptor (TLR)/nuclear factor kappa B (NF-κB) and nuclear factor erythroid 2-related factor 2 (Nrf2)/heme oxygenase (HO)-1 pathways were investigated to illustrate the underlying mechanism. In vitro, microglial cells exposed to LPS were treated with GLB. Results: The injection of LPS caused walking, climbing and sensory disturbances in rats, induced inflammation, oxidative stress response and apoptosis, and activated TLR/NF-κB and Nrf2/ HO-1 pathways in the cerebral tissue. GLB administration attenuated LPS-induced alterations. The TLR/NF-κB pathway was deactivated and Nrf2/HO-1 was activated after application of GLB. In vitro, cytotoxic effects induced by the conditioned medium derived from microglial cells exposed to LPS in PC12 cells were attenuated by GLB. Conclusion: GLB suppresses LPS-induced PD symptoms by modification of TLR/NF-κB and Nrf2/HO-1 pathways in vivo and in vitro.

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Transcription Factor NF-κB: An Update on Intervention Strategies

Cited by 122 publications

References 162 publications

LncRNA GAS5 Represses Osteosarcoma Cells Growth and Metastasis via Sponging MiR-203a

LncRNA GAS5 Represses Osteosarcoma Cells Growth and Metastasis via Sponging MiR-203a

Transcription Elongation Factor P-TEFb Is Involved in IL-17F Signaling in Airway Smooth Muscle Cells

Glaucocalyxin B Alleviates Lipopolysaccharide-Induced Parkinson’s Disease by Inhibiting TLR/NF-κB and Activating Nrf2/HO-1 Pathway

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