カシバ　ミサト   加柴　美里    所属   学環 教養学環    職種   教授
言語種別	英語
発行・発表の年月	2023/05
形態種別	学術論文
査読	査読あり
標題	Transferrin, insulin, and progesterone modulate intracellular concentrations of coenzyme Q and cholesterol, products of the mevalonate pathway, in undifferentiated PC12 cells
執筆形態	共著
掲載誌名	J. Clin. Biochem. Nutr.
掲載区分	国内
巻・号・頁	72(3),pp.199-206
担当区分	最終著者,責任著者
著者・共著者	Akari Nakamura, Yukina Aida, Mizuho Okamoto, Ayaka Maeda, Ayaka Nagao, Kanae Kitatani, Susumu Takekoshi, Akio Fujisawa, Yorihiro Yamamoto, and Misato Kashiba,*
概要	Coenzyme Q (CoQ) is important not only as an essential lipid for the mitochondrial electron transport system, but also as an antioxidant. CoQ levels decrease during aging and in various diseases. Orally administered CoQ is not readily taken up in the brain, so it is necessary to develop a method to increase the amount of CoQ in neurons. CoQ is synthesized via mevalonate pathway, like cholesterol. Transferrin, insulin, and progesterone are factors used in the culture of neurons. In this study, we determined the effect of these reagents on cellular CoQ and cholesterol levels. The administration of transferrin, insulin, and progesterone increased cellular CoQ levels in undifferentiated PC12 cells. When serum was removed and only insulin was administered, intracellular CoQ levels increased. This increase was even more pronounced with concurrent administration of transferrin, insulin, and progesterone. Cholesterol level decreased by the administration of transferrin, insulin, and progesterone. Progesterone treatment lowered intracellular cholesterol levels in a concentration-dependent manner. Our findings suggest that transferrin, insulin, and progesterone may be useful in regulating CoQ levels and cholesterol levels, which are products of the mevalonate pathway.