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Activation of autophagy triggers mitochondrial loss and changes acetylation profile relevant for mechanotransduction in bladder cancer cells.

作者信息

Jobst Maximilian, Kiss Endre, Gerner Christopher, Marko Doris, Del Favero Giorgia

机构信息

Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstr. 38-40, 1090, Vienna, Austria.

Core Facility Multimodal, Imaging, Faculty of Chemistry, University of Vienna, Währingerstr. 38-40, 1090, Vienna, Austria.

出版信息

Arch Toxicol. 2023 Jan;97(1):217-233. doi: 10.1007/s00204-022-03375-2. Epub 2022 Oct 10.


DOI:10.1007/s00204-022-03375-2
PMID:36214828
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9816236/
Abstract

Bladder cells are constantly exposed to multiple xenobiotics and bioactive metabolites. In addition to this challenging chemical environment, they are also exposed to shear stress originating from urine and interstitial fluids. Hence, physiological function of bladder cells relies on a high biochemical and biomechanical adaptive competence, which, in turn, is largely supported via autophagy-related mechanisms. As a negative side of this plasticity, bladder cancer cells are known to adapt readily to chemotherapeutic programs. At the molecular level, autophagy was described to support resistance against pharmacological treatments and to contribute to the maintenance of cell structure and metabolic competence. In this study, we enhanced autophagy with rapamycin (1-100 nM) and assessed its effects on the motility of bladder cells, as well as the capability to respond to shear stress. We observed that rapamycin reduced cell migration and the mechanical-induced translocation potential of Krüppel-like transcription factor 2 (KLF2). These effects were accompanied by a rearrangement of cytoskeletal elements and mitochondrial loss. In parallel, intracellular acetylation levels were decreased. Mechanistically, inhibition of the NAD + -dependent deacetylase sirtuin-1 (SIRT1) with nicotinamide (NAM; 0.1-5 mM) restored acetylation levels hampered by rapamycin and cell motility. Taken together, we described the effects of rapamycin on cytoskeletal elements crucial for mechanotransduction and the dependency of these changes on the mitochondrial turnover caused by autophagy activation. Additionally, we could show that targeted metabolic intervention could revert the outcome of autophagy activation, reinforcing the idea that bladder cells can easily adapt to multiple xenobiotics and circumvent in this way the effects of single chemicals.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/c4b8cea64c40/204_2022_3375_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/3d270bcbfb83/204_2022_3375_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/aebc6b0a60bf/204_2022_3375_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/41d8f062be21/204_2022_3375_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/23b380500e8e/204_2022_3375_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/e0da3482640f/204_2022_3375_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/c4b8cea64c40/204_2022_3375_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/3d270bcbfb83/204_2022_3375_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/aebc6b0a60bf/204_2022_3375_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/41d8f062be21/204_2022_3375_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/23b380500e8e/204_2022_3375_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/e0da3482640f/204_2022_3375_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cff8/9816236/c4b8cea64c40/204_2022_3375_Fig6_HTML.jpg

相似文献

[1]
Activation of autophagy triggers mitochondrial loss and changes acetylation profile relevant for mechanotransduction in bladder cancer cells.

Arch Toxicol. 2023-1

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[6]
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[7]
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[10]
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[3]
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[4]
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Front Immunol. 2023

[5]
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[6]
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[7]
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[8]
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Curr Neurovasc Res. 2023

[9]
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Biomolecules. 2023-5-11

[10]
The role of E3 ubiquitin ligases and deubiquitinases in bladder cancer development and immunotherapy.

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本文引用的文献

[1]
Quantifying up to 90 polyphenols simultaneously in human bio-fluids by LC-MS/MS.

Anal Chim Acta. 2022-7-11

[2]
Foodborne compounds that alter plasma membrane architecture can modify the response of intestinal cells to shear stress in vitro.

Toxicol Appl Pharmacol. 2022-7-1

[3]
Mycotoxins Activate the Aryl Hydrocarbon Receptor and Nrf2-ARE Pathway to Alter the Structure and Immune Response of Colon Epithelial Cells.

Chem Res Toxicol. 2022-5-16

[4]
Clueless/CLUH regulates mitochondrial fission by promoting recruitment of Drp1 to mitochondria.

Nat Commun. 2022-3-24

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Inward Outward Signaling in Ovarian Cancer: Morpho-Phospho-Proteomic Profiling Upon Application of Hypoxia and Shear Stress Characterizes the Adaptive Plasticity of OVCAR-3 and SKOV-3 Cells.

Front Oncol. 2022-2-14

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Biomedicines. 2022-1-24

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Nat Aging. 2021-8

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Mechanosensitive Notch-Dll4 and Klf2-Wnt9 signaling pathways intersect in guiding valvulogenesis in zebrafish.

Cell Rep. 2021-10-5

[10]
The receptor subunit Tom20 is dynamically associated with the TOM complex in mitochondria of human cells.

Mol Biol Cell. 2021-10-1

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