Desmosterol is an immediate precursor to cholesterol in the Bloch pathway of cholesterol biosynthesis. Structurally, it varies from cholesterol only by a single double bond at carbon 24 and has been used as cholesterol substitute in cellular membrane studies.{26099} During brain development, desmosterol transiently accumulates, composing up to 30% of total brain sterol, where it is poised to rapidly enrich membrane sterols.{26098} However, defects in cholesterol synthesis can lead to desmosterolosis, resulting from an accumulation of excess desmosterol.{26100} Desmosterol has been reported to activate liver X receptor-target genes in both the liver of cholesterol-free mice and in cholesterol-starved macrophage foam cells in atherosclerotic lesions.{26096,26097}
产品描述
An immediate precursor to cholesterol in the Bloch pathway of cholesterol biosynthesis; reported to activate liver X receptor-target genes in both the liver of cholesterol-free mice and in cholesterol-starved macrophage foam cells in atherosclerotic lesions