Abstract:
:The major source of ATP in cancer cells remains unclear. Here, we examined energy metabolism in gastric cancer cells and found increased fatty acid oxidation and increased expression of ALDH3A1. Metabolic analysis showed that lipid peroxidation by reactive oxygen species led to spontaneous production of 4-hydroxynonenal, which was converted to fatty acids with NADH production by ALDH3A1, resulting in further fatty acid oxidation. Inhibition of ALDH3A1 by knock down using siRNA of ALDH3A1 resulted in significantly reduced ATP production by cancer cells, leading to apoptosis. Oxidative phosphorylation by mitochondria in gastric cancer cells was driven by NADH supplied via fatty acid oxidation. Therefore, blockade of ALDH3A1 together with mitochondrial complex I using gossypol and phenformin led to significant therapeutic effects in a preclinical gastric cancer model.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Lee JS,Kim SH,Lee S,Kang JH,Lee SH,Cheong JH,Kim SYdoi
10.1038/s41598-019-52814-1subject
Has Abstractpub_date
2019-11-08 00:00:00pages
16313issue
1issn
2045-2322pii
10.1038/s41598-019-52814-1journal_volume
9pub_type
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