scholarly journals Proteomic analysis reveals that MAEL, a component of nuage, interacts with stress granule proteins in cancer cells

2013 ◽  
Vol 31 (1) ◽  
pp. 342-350 ◽  
Author(s):  
LIQIN YUAN ◽  
YUZHONG XIAO ◽  
QIUZHI ZHOU ◽  
DONGMEI YUAN ◽  
BAIPING WU ◽  
...  
Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 534
Author(s):  
Sucharat Tungsukruthai ◽  
Onrapak Reamtong ◽  
Sittiruk Roytrakul ◽  
Suchada Sukrong ◽  
Chanida Vinayanwattikun ◽  
...  

Autophagic cell death (ACD) is an alternative death mechanism in resistant malignant cancer cells. In this study, we demonstrated how polyphenol stilbene compound PE5 exhibits potent ACD-promoting activity in lung cancer cells that may offer an opportunity for novel cancer treatment. Cell death caused by PE5 was found to be concomitant with dramatic autophagy induction, as indicated by acidic vesicle staining, autophagosome, and the LC3 conversion. We further confirmed that the main death induction caused by PE5 was via ACD, since the co-treatment with an autophagy inhibitor could reverse PE5-mediated cell death. Furthermore, the defined mechanism of action and upstream regulatory signals were identified using proteomic analysis. Time-dependent proteomic analysis showed that PE5 affected 2142 and 1996 proteins after 12 and 24 h of treatment, respectively. The crosstalk network comprising 128 proteins that control apoptosis and 25 proteins involved in autophagy was identified. Protein–protein interaction analysis further indicated that the induction of ACD was via AKT/mTOR and Bcl-2 suppression. Western blot analysis confirmed that the active forms of AKT, mTOR, and Bcl-2 were decreased in PE5-treated cells. Taken together, we demonstrated the novel mechanism of PE5 in shifting autophagy toward cell death induction by targeting AKT/mTOR and Bcl-2 suppression.


PROTEOMICS ◽  
2006 ◽  
Vol 6 (21) ◽  
pp. 5735-5745 ◽  
Author(s):  
Zhenpeng Li ◽  
Michael Kreutzer ◽  
Stefan Mikkat ◽  
Nikica Miše ◽  
Michael O. Glocker ◽  
...  

2019 ◽  
Author(s):  
Richard J. Wheeler ◽  
Hyun O. Lee ◽  
Ina Poser ◽  
Arun Pal ◽  
Thom Doeleman ◽  
...  

AbstractAmyotrophic lateral sclerosis (ALS) is a neurodegenerative disease with few avenues for treatment. Many proteins implicated in ALS associate with stress granules, which are examples of liquid-like compartments formed by phase separation. Aberrant phase transition of stress granules has been implicated in disease, suggesting that modulation of phase transitions could be a possible therapeutic route. Here, we combine cell-based and protein-based screens to show that lipoamide, and its related compound lipoic acid, reduce the propensity of stress granule proteins to aggregate in vitro. More significantly, they also prevented aggregation of proteins over the life time of Caenorhabditis elegans. Observations that they prevent dieback of ALS patient-derived (FUS mutant) motor neuron axons in culture and recover motor defects in Drosophila melanogaster expressing FUS mutants suggest plausibility as effective therapeutics. Our results suggest that altering phase behaviour of stress granule proteins in the cytoplasm could be a novel route to treat ALS.


Oncotarget ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 5324-5341 ◽  
Author(s):  
Maria Rita Milone ◽  
Biagio Pucci ◽  
Katia Bifulco ◽  
Federica Iannelli ◽  
Rita Lombardi ◽  
...  

PLoS ONE ◽  
2009 ◽  
Vol 4 (11) ◽  
pp. e7916 ◽  
Author(s):  
Sharon J. Pitteri ◽  
Lellean JeBailey ◽  
Vitor M. Faça ◽  
Jason D. Thorpe ◽  
Melissa A. Silva ◽  
...  

2018 ◽  
Vol 160 ◽  
pp. 344-350 ◽  
Author(s):  
Hui-I Yu ◽  
Hsiu-Chuan Chou ◽  
Yi-Ching Su ◽  
Li-Hsun Lin ◽  
Chieh-Hsiang Lu ◽  
...  

ACS Nano ◽  
2017 ◽  
Vol 11 (7) ◽  
pp. 7189-7200 ◽  
Author(s):  
Sanae Abrakhi ◽  
Dmitry A. Kretov ◽  
Bénédicte Desforges ◽  
Ioana Dobra ◽  
Ahmed Bouhss ◽  
...  

2012 ◽  
Vol 8 (4) ◽  
pp. 1146-1156 ◽  
Author(s):  
Josephine Kilner ◽  
Jennifer S. Waby ◽  
Joanna Chowdry ◽  
Abdul Q. Khan ◽  
Josselin Noirel ◽  
...  

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