Метаболические профили клеток мозга человека, обработанных ТНФ-альфа и оксистеролами.
Обработка статьи · этапы, ошибки и управление
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Nguyen Cindy, Cheung Kenneth C P, Chen Xiaoli, Saint-Pol Julien, Shimizu Fumitaka, Kanda Takashi, Pot Caroline, Culot Maxime, Chan Kannie W Y, Lu Wang, Lyu Aiping, Jia Wei, Gosselet Fabien
Аннотация
Оригинал публикации
Metabolic profiles of the human blood-brain barrier cells treated by TNF-alpha and oxysterols.
The blood-brain barrier (BBB) is essential for central nervous system homeostasis, and its dysfunction is implicated in neuroinflammatory disorders such as Alzheimer's disease and multiple sclerosis. Oxysterols, cholesterol-derived metabolites, modulate lipid metabolism, immune responses, and BBB physiology, but their specific metabolic effects remain poorly defined. Using an in vitro human BBB model, we examined the impact of tumor necrosis factor-α (TNFα) and selected oxysterols (24S-hydroxycholesterol, 25-hydroxycholesterol, 7α,25-dihydroxycholesterol) on metabolomic profiles of brain-like endothelial cells (hBLEC) and pericytes (hBP) via targeted LC-MS/MS analysis of over 300 metabolites. TNFα markedly increased phenylpyruvic acid, indicating dysregulated phenylalanine metabolism. Oxysterols elicited minimal effects in hBLEC, but significantly altered glycolysis and fatty acid metabolism in hBP, notably reducing fructose 6-phosphate, glucose 6-phosphate, and myristoleic acid, while increasing specific fatty acids under inflammatory conditions. These results identify phenylpyruvic acid as a candidate biomarker of BBB inflammation and highlight pericyte metabolic reprogramming as a key mechanism of oxysterol action.