%0 Journal Article %T Effect of 4 hydroxy fatty acids on lipid accumulation in the 3T3-L1 cells: a comparative study. %A Kaji N %A Omae T %A Matsuzaki H %A Yamamoto Y %J Biosci Biotechnol Biochem %V 88 %N 9 %D 2024 Aug 26 %M 38834535 %F 2.337 %R 10.1093/bbb/zbae078 %X Notwithstanding the several investigations of the hydroxy fatty acids (hFAs)' physiological functions, studies focusing on their anti-obesity effects are limited. This study investigated the anti-obesity effects of 4 hFAs-10-hydroxy stearic acid (10-hSA), 12-hydroxy stearic acid (12-hSA), 9,12-hydroxy stearic acid (9,12-dhSA), and 12-hydroxy oleic acid (12-hOA)-on the 3T3-L1 cells. All hFAs suppressed lipid accumulation, with 10-hSA and 12-hOA exhibiting the strongest suppression, followed by 12-hSA and 9,12-hSA. This trend was similar to that observed for the glycerol-3-phosphate dehydrogenase (GPDH) activity level. Contrastingly, only 9,12-dhSA suppressed cell viability. The mRNA levels of HK1 and Aldoa were markedly suppressed by 10-hSA and 12-hSA compared to the control. Additionally, mRNA expression of Gyk was considerably suppressed by 12-hSA. Thus, all hFAs suppressed lipid accumulation by suppressing GPDH activity, although their molecular mechanisms were different. These findings will aid the application of hFAs in the food and medical industries.