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http://dx.doi.org/10.13103/JFHS.2019.34.3.303

The Anti-Proliferation and Oxidative Damage-Related Mechanism of L-Carnitine in Human Colorectal Cancer Cells  

Lee, Jooyeon (Department of Thoracic and Cardiovascular Surgery, Kangwon National University)
Park, Jeong-Ran (Bioceltran Co., Ltd.)
Jang, Aera (Department of Animal Products and Food Science, Kangwon National University)
Yang, Se-Ran (Department of Thoracic and Cardiovascular Surgery, Kangwon National University)
Publication Information
Journal of Food Hygiene and Safety / v.34, no.3, 2019 , pp. 303-308 More about this Journal
Abstract
L-carnitine is found in high levels in muscle tissues. It has been developed as a nutrient and dietary supplement, and also used as a therapeutic supplement in various diseases including type II diabetes, osteoporosis and metabolic neuropathies. However, it is not fully understood how it affects cellular mechanisms in colorectal cancer. Therefore, we attempted to determine the effect of L-carnitine in HCT116 human colorectal cancer cells. First, the HCT116 cells were exposed to L-carnitine for 24 hours at 0-40 mM, and then analyzed for cellular proliferation, oxidative stress and related mechanisms. In a MTT assay, L-carnitine inhibited cellular proliferation and induced reactive oxygen species (ROS) in HCT116 by DCF-DA analysis. To analyze the mechanism of L-carnitine in colorectal cancer cells, we performed a western blot analysis for pERK1/2 and pp38 MAP kinase. The western blot showed that L-carnitine significantly increased protein levels of pERK1/2 and pp38 compared with control. Taken together, we found that L-carnitine has anti-proliferative function via increased ROS and activation of ERK1/2 and p38 pathway in HCT116. These findings suggest that L-carnitine may have an anti-proliferative role on colorectal cancer.
Keywords
L-carnitine; Colorectal cancer; Anti-proliferation; Reactive oxygen species; HCT116;
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