scholarly journals Docosahexaenoic fatty acid (DHA) in the regulation of colon cell growth and cell death: A review

2012 ◽  
Vol 156 (3) ◽  
pp. 186-199 ◽  
Author(s):  
Belma Skender ◽  
Alena Hyrslova Vaculova ◽  
Jirina Hofmanova

2005 ◽  
Vol 138 (3) ◽  
pp. 1516-1526 ◽  
Author(s):  
Jean-Luc Montillet ◽  
Sangpen Chamnongpol ◽  
Christine Rustérucci ◽  
James Dat ◽  
Brigitte van de Cotte ◽  
...  


Oncogenesis ◽  
2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Yu Geon Lee ◽  
Hui Won Kim ◽  
Yeji Nam ◽  
Kyeong Jin Shin ◽  
Yu Jin Lee ◽  
...  

AbstractMitochondrial proteases are key components in mitochondrial stress responses that maintain proteostasis and mitochondrial integrity in harsh environmental conditions, which leads to the acquisition of aggressive phenotypes, including chemoresistance and metastasis. However, the molecular mechanisms and exact role of mitochondrial proteases in cancer remain largely unexplored. Here, we identified functional crosstalk between LONP1 and ClpP, which are two mitochondrial matrix proteases that cooperate to attenuate proteotoxic stress and protect mitochondrial functions for cancer cell survival. LONP1 and ClpP genes closely localized on chromosome 19 and were co-expressed at high levels in most human cancers. Depletion of both genes synergistically attenuated cancer cell growth and induced cell death due to impaired mitochondrial functions and increased oxidative stress. Using mitochondrial matrix proteomic analysis with an engineered peroxidase (APEX)-mediated proximity biotinylation method, we identified the specific target substrates of these proteases, which were crucial components of mitochondrial functions, including oxidative phosphorylation, the TCA cycle, and amino acid and lipid metabolism. Furthermore, we found that LONP1 and ClpP shared many substrates, including serine hydroxymethyltransferase 2 (SHMT2). Inhibition of both LONP1 and ClpP additively increased the amount of unfolded SHMT2 protein and enhanced sensitivity to SHMT2 inhibitor, resulting in significantly reduced cell growth and increased cell death under metabolic stress. Additionally, prostate cancer patients with higher LONP1 and ClpP expression exhibited poorer survival. These results suggest that interventions targeting the mitochondrial proteostasis network via LONP1 and ClpP could be potential therapeutic strategies for cancer.



2012 ◽  
Vol 25 (11) ◽  
pp. 1253-1262 ◽  
Author(s):  
Ladan Mirbahai ◽  
Martin Wilson ◽  
Christopher S. Shaw ◽  
Carmel McConville ◽  
Roger D. G. Malcomson ◽  
...  


2004 ◽  
Vol 28 (5) ◽  
pp. 308-314 ◽  
Author(s):  
RC Gillis ◽  
BJ Daley ◽  
BL Enderson ◽  
MD Karlstad




2006 ◽  
Vol 18 (5) ◽  
pp. 592-600 ◽  
Author(s):  
Mathieu Vinken ◽  
Tamara Vanhaecke ◽  
Peggy Papeleu ◽  
Sarah Snykers ◽  
Tom Henkens ◽  
...  
Keyword(s):  


Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 369
Author(s):  
Joanna Wawszczyk ◽  
Katarzyna Jesse ◽  
Sławomir Smolik ◽  
Małgorzata Kapral

Pterostilbene is a dietary phytochemical that has been found to possess several biological activities, such as antioxidant and anti-inflammatory. Recent studies have shown that it exhibits the hallmark characteristics of an anticancer agent. The aim of the study was to investigate the anticancer activity of pterostilbene against HT-29 human colon cancer cells, focusing on its influence on cell growth, differentiation, and the ability of this stilbene to induce cell death. To clarify the mechanism of pterostilbene activity against colon cancer cells, changes in the expression of several genes and proteins that are directly related to cell proliferation, signal transduction pathways, apoptosis, and autophagy were also evaluated. Cell growth and proliferation of cells exposed to pterostilbene (5–100 µM) were determined by SRB and BRDU assays. Flow cytometric analyses were used for cell cycle progression. Further molecular investigations were performed using quantitative real-time RT-PCR. The expression of the signaling proteins studied was determined by the ELISA method. The results revealed that pterostilbene inhibited proliferation and induced the death of HT-29 colon cancer cells. Pterostilbene, depending on concentration, caused inhibition of proliferation, G1 cell arrest, and/or triggered apoptosis in HT-29 cells. These effects were mediated by the down-regulation of the STAT3 and AKT kinase pathways. It may be concluded that pterostilbene could be considered as a potential therapeutic option in the treatment of colon cancer in the future.



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