Affiliation:
1. The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang 315000, China
2. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang 315100, China
Abstract
Fucoxanthin, a natural carotenoid, contains special ene bonds and 5, 6-mono-epoxide compounds in its molecule, which has physiological activities such as anticancer, antioxidant, anti-inflammatory, antiobesity, and antidiabetic. However, the anticancer actions and underlying mechanisms of fucoxanthin on oral cancer remain to be assessed. In this study, we used tongue carcinoma (CAL-27) cells to examine the effects and underlying mechanisms of fucoxanthin derived from Hizikia fusiforme on CAL-27 proliferation. MTT assays were used to estimate fucoxanthin’s effect on the proliferative capacity of CAL-27 cells. Flow cytometry was used to examine how fucoxanthin affects apoptosis initiation and alters cell cycle progression in CAL-27 cells. Spectrophotometry was used to assess the impact of fucoxanthin on adenosine triphosphate (ATP) generation, glucose uptake, lactate production, and the enzymatic activities of pyruvate kinase and hexokinase in CAL-27 cells. Western blotting was used to investigate fucoxanthin’s impact on the protein kinase B (AKT)/mammalian target of rapamycin (mTOR) signaling pathway and glycolysis-related protein expression levels in CAL-27 cells. Fucoxanthin significantly inhibited CAL-27 cell viability time- and dose-dependently
. Administration of fucoxanthin induced CAL-27 cell apoptosis and cell cycle arrest at the G1 phase
. Furthermore, fucoxanthin significantly decreased glucose uptake, lactate production, and ATP production in CAL-27 cells
and significantly inhibited glycolysis-related enzyme activities and protein expression levels
. Fucoxanthin also substantially decreased the expression levels of phosphorylated ribosomal protein S6, phosphorylated AKT, and phosphorylated mTOR
. In conclusion, fucoxanthin inhibited CAL-27 cell proliferation, and this mechanism may be associated with the AKT/mTOR-mediated glycolysis pathway.
Funder
Ningbo Key Laboratory of Hearing and Balance Medicine
Subject
Cell Biology,Pharmacology,Food Science,Biophysics