scholarly journals PKCα-LSD1-NF-κB-Signaling Cascade Is Crucial for Epigenetic Control of the Inflammatory Response

2018 ◽  
Vol 69 (3) ◽  
pp. 398-411.e6 ◽  
Author(s):  
Dongha Kim ◽  
Hye Jin Nam ◽  
Wonhwa Lee ◽  
Hwa Young Yim ◽  
Jun-Yeong Ahn ◽  
...  
Keyword(s):  
Inflammatory Response ◽  
Signaling Cascade ◽  
Epigenetic Control

scholarly journals microRNAs involved in the control of toxicity on locomotion behavior induced by simulated microgravity stress in Caenorhabditis elegans

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Lingmei Sun ◽  
Wenjie Li ◽  
Dan Li ◽  
Dayong Wang
Keyword(s):  
Oxidative Stress ◽  
Functional Analysis ◽  
Caenorhabditis Elegans ◽  
Molecular Basis ◽  
Simulated Microgravity ◽  
Signaling Cascade ◽  
Protective Response ◽  
Epigenetic Control ◽  
Candidate Mirnas ◽  
Locomotion Behavior

Abstract microRNAs (miRNAs) post-transcriptionally regulate the expression of targeted genes. We here systematically identify miRNAs in response to simulated microgravity based on both expressions and functional analysis in Caenorhabditis elegans. After simulated microgravity treatment, we observed that 19 miRNAs (16 down-regulated and 3 up-regulated) were dysregulated. Among these dysregulated miRNAs, let-7, mir-54, mir-67, mir-85, mir-252, mir-354, mir-789, mir-2208, and mir-5592 were required for the toxicity induction of simulated microgravity in suppressing locomotion behavior. In nematodes, alteration in expressions of let-7, mir-67, mir-85, mir-252, mir-354, mir-789, mir-2208, and mir-5592 mediated a protective response to simulated microgravity, whereas alteration in mir-54 expression mediated the toxicity induction of simulated microgravity. Moreover, among these candidate miRNAs, let-7 regulated the toxicity of simulated microgravity by targeting and suppressing SKN-1/Nrf protein. In the intestine, a signaling cascade of SKN-1/Nrf-GST-4/GST-5/GST-7 required for the control of oxidative stress was identified to act downstream of let-7 to regulate the toxicity of simulated microgravity. Our data demonstrated the crucial function of miRNAs in regulating the toxicity of simulated microgravity stress in organisms. Moreover, our results further provided an important molecular basis for epigenetic control of toxicity of simulated microgravity.

scholarly journals Epigenetic immune-modulation by Histone Deacetylase Activity (HDAC) of tissue and organ regeneration in Xenopus laevis

2020 ◽  
Author(s):  
Nathalia Pentagna ◽  
Felipe Soares dos Santos ◽  
Fernanda Martins de Almeida ◽  
José Garcia Abreu ◽  
Michael Levin ◽  
...  
Keyword(s):  
Inflammatory Response ◽  
Immune Modulation ◽  
Temporal Dynamics ◽  
Tissue Injury ◽  
Hdac Inhibitors ◽  
Myeloid Cells ◽  
Tail Regeneration ◽  
Epigenetic Control ◽  
Organ Regeneration ◽  
Regenerative Ability

AbstractIn the present work we propose to shed light on the epigenetic control of immune mechanisms involved during Xenopus tail regeneration. Here we show that the first 24 hour post amputation (hpa), which exclusively encompasses the first wave of myeloid differentiation, are crucial to epigenetically modulate the regenerative ability of Xenopus tadpoles. During this developmental window, HDAC activity was shown to be necessary for the proper establishment of myeloid cells dynamics in the regenerative bud, mainly contributing to modulate the behavior of monocytes/macrophages and neutrophils as well the mRNA expression pattern of the main myeloid markers, such as LURP, MPOX, Spib and mmp7. In addition, we functionally bridge the spatial and temporal dynamics of lipid droplets, the main platform of lipid mediators synthesis in myeloid cells during the inflammatory response, and the regenerative ability of Xenopus tadpoles showing that 15-LOX activity is a key player during tail regeneration. Taken together our results support a role for the epigenetic control of inflammatory response during tissue and organ regeneration, which may positively impact translational approaches for regenerative medicine.Summary statementWe propose that Epigenetic mechanisms HDAC-dependent can control myeloid cells behavior upon tissue injury and that HDAC inhibitors may be used for tissue regeneration in translational studies.

Epigenetic control of TNAP expression in Pseudoxanthoma elasticum fibroblasts

2012 ◽  
Author(s):  
Angela Ostuni ◽  
Vittoria Infantino ◽  
Antonella Salvia ◽  
Rocchina Miglionico ◽  
Federica Boraldi ◽  
...  
Keyword(s):  
Pseudoxanthoma Elasticum ◽  
Epigenetic Control

Gut permeabillity and nitric oxide: Evidence for an endotoxin mediated inflammatory response in severe acute pancreatitis

2001 ◽  
Vol 120 (5) ◽  
pp. A468-A469
Author(s):  
S RAHMAN ◽  
B AMMORI ◽  
I MARTIN ◽  
G BARCLAY ◽  
M LARVIN ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Acute Pancreatitis ◽  
Inflammatory Response ◽  
Severe Acute Pancreatitis

ERK and PKCξ independently contribute to the EPEC-induced inflammatory response

2001 ◽  
Vol 120 (5) ◽  
pp. A126-A126
Author(s):  
S SAVKOVIC ◽  
Z KAPADIA ◽  
A KOUTSOURIS ◽  
G HECHT
Keyword(s):  
Inflammatory Response

Sorghum Fermented by Aspergillus oryzae NK Enhances Inhibition of Vascular Inflammation in TNF-α-stimulated Human Aortic Smooth Muscle Cells

2018 ◽  
Vol 88 (5-6) ◽  
pp. 309-318
Author(s):  
Hae Seong Song ◽  
Jung-Eun Kwon ◽  
Hyun Jin Baek ◽  
Chang Won Kim ◽  
Hyelin Jeon ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Inflammatory Response ◽  
Smooth Muscle Cells ◽  
Adhesion Molecule ◽  
Vascular Inflammation ◽  
Muscle Cells ◽  
Aortic Smooth Muscle Cells ◽  
Aortic Smooth Muscle ◽  
Tnf Α ◽  
Cox 2

Abstract. Sorghum bicolor L. Moench is widely grown all over the world for food and feed. The effects of sorghum extracts on general inflammation have been previously studied, but its anti-vascular inflammatory effects are unknown. Therefore, this study investigated the anti-vascular inflammation effects of sorghum extract (SBE) and fermented extract of sorghum (fSBE) on human aortic smooth muscle cells (HASMCs). After the cytotoxicity test of the sorghum extract, a series of experiments were conducted. The inhibition effects of SBE and fSBE on the inflammatory response and adhesion molecule expression were measured using treatment with tumor necrosis factor-α (TNF-α), a crucial promoter for the development of atherosclerotic lesions, on HASMCs. After TNF-α (10 ng/mL) treatment for 2 h, then SBE and fSBE (100 and 200 μg/mL) were applied for 12h. Western blotting analysis showed that the expression of vascular cell adhesion molecule-1 (VCAM-1) (2.4-fold) and cyclooxygenase-2 (COX-2) (6.7-fold) decreased, and heme oxygenase-1 (HO-1) (3.5-fold) increased compared to the TNF-α control when treated with 200 μg/mL fSBE (P<0.05). In addition, the fSBE significantly increased the expression of HO-1 and significantly decreased the expression of VCAM-1 and COX-2 compared to the TNF-α control in mRNA level (P<0.05). These reasons of results might be due to the increased concentrations of procyanidin B1 (about 6-fold) and C1 (about 30-fold) produced through fermentation with Aspergillus oryzae NK for 48 h, at 37 °C. Overall, the results demonstrated that fSBE enhanced the inhibition of the inflammatory response and adherent molecule expression in HASMCs.

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