Abstract:
:Rapamycin, also known as sirolimus, is an antifungal agent and immunosuppressant drug used to prevent organ rejection in transplantation. However, little is known about the role of rapamycin in cardiac hypertrophy and the signaling pathways involved. Here, the effect of rapamycin was examined using phenylephrine (PE) induced cardiomyocyte hypertrophy in vitro and in a rat model of aortic banding (AB) - induced hypertrophy in vivo. Inhibition of MEK/ERK signaling reversed the effect of rapamycin on the up-regulation of LC3-II, Beclin-1 and Noxa, and the down-regulation of Mcl-1 and p62. Silencing of Noxa or Beclin-1 suppressed rapamycin-induced autophagy, and co-immunoprecipitation experiments showed that Noxa abolishes the inhibitory effect of Mcl-1 on Beclin-1, promoting autophagy. In vivo experiments showed that rapamycin decreased AB-induced cardiac hypertrophy in a MEK/ERK dependent manner. Taken together, our results indicate that rapamycin attenuates cardiac hypertrophy by promoting autophagy through a mechanism involving the modulation of Noxa and Beclin-1 expression by the MEK/ERK signaling pathway.
journal_name
Front Physioljournal_title
Frontiers in physiologyauthors
Gu J,Hu W,Song ZP,Chen YG,Zhang DD,Wang CQdoi
10.3389/fphys.2016.00104subject
Has Abstractpub_date
2016-03-18 00:00:00pages
104issn
1664-042Xjournal_volume
7pub_type
杂志文章abstract::Na(+)/Ca(2+) exchanger (NCX) proteins extrude Ca(2+) from the cell to maintain cellular homeostasis. Since NCX proteins contribute to numerous physiological and pathophysiological events, their pharmacological targeting has been desired for a long time. This intervention remains challenging owing to our poor understan...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2016.00030
更新日期:2016-02-09 00:00:00
abstract::The purpose of this study was to compare the effects of two similar high-intensity intermittent exercises (HIIE) but different volume 1.25 km (HIIE1.25) and 2.5 km (HIIE2.5) on inflammatory and BDNF responses. Ten physically active male subjects (age 25.22 ± 1.74 years, body mass 78.98 ± 7.31 kg, height 1.78 ± 0.06 m,...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2016.00509
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journal_title:Frontiers in physiology
pub_type: 杂志文章
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abstract::Activation of autonomic neural pathways by chronic hypertensive stimuli plays a significant role in pathogenesis of hypertension. Here, we proposed that even a single acute hypertensive stimulus will activate neural and immune pathways that may be important in initiation of memory imprinting seen in chronic hypertensi...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00592
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abstract::Animal experiments suggest that total liquid ventilation (TLV) induces less ventilator-induced lung injury (VILI) than conventional mechanical gas ventilation. However, TLV parameters that optimally minimize VILI in newborns remain unknown. Our objective was to compare lung inflammation between low (L-VT) and high (H-...
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doi:10.3389/fphys.2020.00603
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journal_title:Frontiers in physiology
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.518876
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abstract::Fractal phenomena can be found in numerous scientific areas including neuroscience. Fractals are structures, in which the whole has the same shape as its parts. A specific structure known as pink noise (also called fractal or 1/f noise) is one key fractal manifestation, exhibits both stability and adaptability, and ca...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01378
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2012.00191
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2013.00151
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journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2018.00095
更新日期:2018-02-14 00:00:00
abstract::Yellow genes are thought to be involved in the melanin biosynthetic pathway and play a crucial role in pigmentation reactions in insects. However, little research has been done on yellow genes in lepidopteran pests. To clarify the function of one of the yellow genes (yellow-y) in Spodoptera litura, we cloned the full-...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.615391
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00242
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abstract::We describe our development of the diffusion tensor imaging modality for the bovine ocular lens. Diffusion gradients were added to a spin-echo pulse sequence and the relevant parameters of the sequence were refined to achieve good diffusion weighting in the lens tissue, which demonstrated heterogeneous regions of diff...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2013.00033
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abstract:Objective:Develop an automated approach to detect flash (<1.0 s) or prolonged (>2.0 s) capillary refill time (CRT) that correlates with clinician judgment by applying several supervised machine learning (ML) techniques to pulse oximeter plethysmography data. Materials and Methods:Data was collected in the Pediatric In...
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doi:10.3389/fphys.2020.564589
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00224
更新日期:2017-04-19 00:00:00
abstract::Rapidly expanding aging populations and a concomitant increase in the prevalence of age-related diseases are global health problems today. Over the past three decades, a large body of work has led to the identification of genes and regulatory networks that affect longevity and health span, often benefiting from the tr...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2012.00143
更新日期:2012-05-18 00:00:00
abstract::Current cardiac drug safety assessments focus on hERG channel block and QT prolongation for evaluating arrhythmic risks, whereas the optogenetic approach focuses on the action potential (AP) waveform generated by a monolayer of human cardiomyocytes beating synchronously, thus assessing the contribution of several ion ...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00884
更新日期:2017-11-02 00:00:00
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journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2014.00206
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journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2014.00051
更新日期:2014-02-20 00:00:00
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.00032
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01185
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.587214
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abstract::Hypoxic exercise may represent a novel therapeutic strategy to reduce and prevent obesity through the regulation of lipid metabolism. During hypoxic exercise, the targeting of peroxisome proliferator-activated receptor gamma (PPARγ) by miR-27b has been proposed to be one of the mechanisms involved in the modulation of...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.01090
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abstract::DNA methylation is evolutionarily conserved. Vertebrates exhibit high, widespread DNA methylation whereas invertebrate genomes are less methylated, predominantly within gene bodies. DNA methylation in invertebrates is associated with transcription level, alternative splicing, and genome evolution, but functional outco...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2014.00129
更新日期:2014-04-07 00:00:00
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journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2017.00737
更新日期:2017-09-22 00:00:00
abstract::Reticuloendothelial macrophages engulf ∼0.2 trillion senescent erythrocytes daily in a process called erythrophagocytosis (EP). This critical mechanism preserves systemic heme-iron homeostasis by regulating red blood cell (RBC) catabolism and iron recycling. Although extensive work has demonstrated the various effects...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.00396
更新日期:2020-04-30 00:00:00
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journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00248
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journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2013.00318
更新日期:2013-11-01 00:00:00