scholarly journals Cellular stress response to extremely low‐frequency electromagnetic fields (ELF‐EMF): An explanation for controversial effects of ELF‐EMF on apoptosis

2021 ◽  
Author(s):  
Mojdeh Barati ◽  
Behrad Darvishi ◽  
Mohammad Amin Javidi ◽  
Ali Mohammadian ◽  
Seyed Peyman Shariatpanahi ◽  
...  
Keyword(s):  
Stress Response ◽  
Electromagnetic Fields ◽  
Cellular Stress ◽  
Low Frequency ◽  
Cellular Stress Response ◽  
Extremely Low Frequency

scholarly journals Study of Electromagnetic Fields on Cellular Systems

2009 ◽  
Vol 19 ◽  
pp. 65-70 ◽  
Author(s):  
Julio César Hernández-Pavón ◽  
Modesto Sosa ◽  
Teodoro Córdova ◽  
Gloria Barbosa-Sabanero ◽  
Sergio Solorio-Meza ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Electromagnetic Fields ◽  
Cell Cultures ◽  
Biological Systems ◽  
Cellular Stress ◽  
Low Frequency ◽  
Cellular Systems ◽  
Extremely Low Frequency ◽  
Preliminary Results ◽  
Electromagnetic Stimulation

In the last decades the interest to study the effect of non-ionizing radiation, such as the electromagnetic fields (EMF) on cellular systems has increased. In this article the interaction between EMF and biological systems is described. An analysis of the effect of the electromagnetic stimulation at different frequencies and intensities on cell cultures is performed. Preliminary results show that the stimulation with extremely low frequency electromagnetic fields (ELF-EMF), EMF from 3 to 30 Hz, on the cellular line of neuroblastomaSK-NSH induces cellular stress. This is reflected by a variation in the proteins expression in comparison with the group of cells no stimulated. In particular, the proteins expression shows that the ELF-EMF produce changes in the current proteins in normal or basal conditionsin the cells, that is, new proteins appear or there is evidence of an increasing in theamount of them.

scholarly journals Integration of temporal single cell cellular stress response activity with Logic-ODE modeling reveals activation of ATF4-CHOP axis as a critical predictor of drug-induced liver injury

2021 ◽  
pp. 114591
Author(s):  
Lukas Surya Wijaya ◽  
Panuwat Trairatphisan ◽  
Attila Gabor ◽  
Marije Niemeijer ◽  
Jason Keet ◽  
...  
Keyword(s):  
Stress Response ◽  
Liver Injury ◽  
Single Cell ◽  
Cellular Stress ◽  
Cellular Stress Response ◽  
Drug Induced ◽  
Drug Induced Liver Injury

scholarly journals Flavonoids: Potential Candidates for the Treatment of Neurodegenerative Disorders

Biomedicines ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 99
Author(s):  
Shweta Devi ◽  
Vijay Kumar ◽  
Sandeep Kumar Singh ◽  
Ashish Kant Dubey ◽  
Jong-Joo Kim
Keyword(s):  
Stress Response ◽  
Stress Responses ◽  
Neurodegenerative Disorders ◽  
Cell Damage ◽  
Cellular Stress ◽  
Clinical Manifestations ◽  
Cellular Stress Response ◽  
Dramatic Rise ◽  
Cellular Stress Responses

Neurodegenerative disorders, such as Parkinson’s disease (PD), Alzheimer’s disease (AD), Amyotrophic lateral sclerosis (ALS), and Huntington’s disease (HD), are the most concerning disorders due to the lack of effective therapy and dramatic rise in affected cases. Although these disorders have diverse clinical manifestations, they all share a common cellular stress response. These cellular stress responses including neuroinflammation, oxidative stress, proteotoxicity, and endoplasmic reticulum (ER)-stress, which combats with stress conditions. Environmental stress/toxicity weakened the cellular stress response which results in cell damage. Small molecules, such as flavonoids, could reduce cellular stress and have gained much attention in recent years. Evidence has shown the potential use of flavonoids in several ways, such as antioxidants, anti-inflammatory, and anti-apoptotic, yet their mechanism is still elusive. This review provides an insight into the potential role of flavonoids against cellular stress response that prevent the pathogenesis of neurodegenerative disorders.

scholarly journals Mitochondrien unter Stress: Die Rolle der Präsequenzprotease MPP

BIOspektrum ◽  
2021 ◽  
Vol 27 (4) ◽  
pp. 390-393
Author(s):  
F.-Nora Vögtle
Keyword(s):  
Stress Response ◽  
Cellular Stress ◽  
Critical Role ◽  
Mitochondrial Protein ◽  
Nuclear Genome ◽  
Cellular Stress Response ◽  
Mitochondrial Proteins ◽  
Protein Biogenesis ◽  
Cellular Integrity

AbstractThe majority of mitochondrial proteins are encoded in the nuclear genome, so that the nearly entire proteome is assembled by post-translational preprotein import from the cytosol. Proteomic imbalances are sensed and induce cellular stress response pathways to restore proteostasis. Here, the mitochondrial presequence protease MPP serves as example to illustrate the critical role of mitochondrial protein biogenesis and proteostasis on cellular integrity.

scholarly journals m5U54 tRNA Hypomodification by Lack of TRMT2A Drives the Generation of tRNA-Derived Small RNAs

2021 ◽  
Vol 22 (6) ◽  
pp. 2941
Author(s):  
Marisa Pereira ◽  
Diana R. Ribeiro ◽  
Miguel M. Pinheiro ◽  
Margarida Ferreira ◽  
Stefanie Kellner ◽  
...  
Keyword(s):  
Stress Response ◽  
Small Rnas ◽  
Mammalian Cells ◽  
Cellular Stress ◽  
Cellular Stress Response ◽  
Translation Regulation ◽  
Translation Efficiency ◽  
Down Regulation ◽  
Gene Expression Control ◽  
The Impact

Transfer RNA (tRNA) molecules contain various post-transcriptional modifications that are crucial for tRNA stability, translation efficiency, and fidelity. Besides their canonical roles in translation, tRNAs also originate tRNA-derived small RNAs (tsRNAs), a class of small non-coding RNAs with regulatory functions ranging from translation regulation to gene expression control and cellular stress response. Recent evidence indicates that tsRNAs are also modified, however, the impact of tRNA epitranscriptome deregulation on tsRNAs generation is only now beginning to be uncovered. The 5-methyluridine (m5U) modification at position 54 of cytosolic tRNAs is one of the most common and conserved tRNA modifications among species. The tRNA methyltransferase TRMT2A catalyzes this modification, but its biological role remains mostly unexplored. Here, we show that TRMT2A knockdown in human cells induces m5U54 tRNA hypomodification and tsRNA formation. More specifically, m5U54 hypomodification is followed by overexpression of the ribonuclease angiogenin (ANG) that cleaves tRNAs near the anticodon, resulting in accumulation of 5′tRNA-derived stress-induced RNAs (5′tiRNAs), namely 5′tiRNA-GlyGCC and 5′tiRNA-GluCTC, among others. Additionally, transcriptomic analysis confirms that down-regulation of TRMT2A and consequently m5U54 hypomodification impacts the cellular stress response and RNA stability, which is often correlated with tiRNA generation. Accordingly, exposure to oxidative stress conditions induces TRMT2A down-regulation and tiRNA formation in mammalian cells. These results establish a link between tRNA hypomethylation and ANG-dependent tsRNAs formation and unravel m5U54 as a tRNA cleavage protective mark.

scholarly journals C. elegans discriminates colors to guide foraging

Science ◽  
2021 ◽  
Vol 371 (6533) ◽  
pp. 1059-1063 ◽  
Author(s):  
D. Dipon Ghosh ◽  
Dongyeop Lee ◽  
Xin Jin ◽  
H. Robert Horvitz ◽  
Michael N. Nitabach
Keyword(s):  
Stress Response ◽  
Cellular Stress ◽  
Color Discrimination ◽  
Cellular Stress Response ◽  
Blue Pigment ◽  
Natural Environments ◽  
C Elegans ◽  
Evolutionarily Conserved ◽  
Foraging Decisions ◽  
Light Guides

Color detection is used by animals of diverse phyla to navigate colorful natural environments and is thought to require evolutionarily conserved opsin photoreceptor genes. We report that Caenorhabditis elegans roundworms can discriminate between colors despite the fact that they lack eyes and opsins. Specifically, we found that white light guides C. elegans foraging decisions away from a blue-pigment toxin secreted by harmful bacteria. These foraging decisions are guided by specific blue-to-amber ratios of light. The color specificity of color-dependent foraging varies notably among wild C. elegans strains, which indicates that color discrimination is ecologically important. We identified two evolutionarily conserved cellular stress response genes required for opsin-independent, color-dependent foraging by C. elegans, and we speculate that cellular stress response pathways can mediate spectral discrimination by photosensitive cells and organisms—even by those lacking opsins.

scholarly journals Induction and transmission of oncogene-induced senescence

2020 ◽  
Author(s):  
Nattaphong Rattanavirotkul ◽  
Kristina Kirschner ◽  
Tamir Chandra
Keyword(s):  
Stress Response ◽  
Single Cell ◽  
Cellular Stress ◽  
Cellular Stress Response ◽  
End Points ◽  
Oncogene Activation ◽  
Suppressor Mechanism ◽  
Bona Fide ◽  
Organ Level ◽  
Complex Scenario

Abstract Senescence is a cellular stress response triggered by diverse stressors, including oncogene activation, where it serves as a bona-fide tumour suppressor mechanism. Senescence can be transmitted to neighbouring cells, known as paracrine secondary senescence. Secondary senescence was initially described as a paracrine mechanism, but recent evidence suggests a more complex scenario involving juxtacrine communication between cells. In addition, single-cell studies described differences between primary and secondary senescent end-points, which have thus far not been considered functionally distinct. Here we discuss emerging concepts in senescence transmission and heterogeneity in primary and secondary senescence on a cellular and organ level.

P22.22 Exposure to extremely low-frequency (50 Hz) electromagnetic fields enhances adult hippocampal neurogenesis in C57BL/6 mice

2011 ◽  
Vol 122 ◽  
pp. S162
Author(s):  
L. Leone ◽  
B. Cuccurazzu ◽  
M.V. Podda ◽  
R. Piacentini ◽  
E. Riccardi ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Low Frequency ◽  
Hippocampal Neurogenesis ◽  
Adult Hippocampal Neurogenesis ◽  
Extremely Low Frequency
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