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• W1972348965 abstract "We provide novel insights into the function(s) of β-carotene-15,15′-oxygenase (CMOI) during embryogenesis. By performing in vivo and in vitro experiments, we showed that CMOI influences not only lecithin:retinol acyltransferase but also acyl CoA:retinol acyltransferase reaction in the developing tissues at mid-gestation. In addition, LC/MS lipidomics analysis of the CMOI −/− embryos showed reduced levels of four phosphatidylcholine and three phosphatidylethanolamine acyl chain species, and of eight triacylglycerol species with four or more unsaturations and fifty-two or more carbons in the acyl chains. Cholesteryl esters of arachidonate, palmitate, linoleate, and DHA were also reduced to less than 30% of control. Analysis of the fatty acyl CoA species ruled out a loss in fatty acyl CoA synthetase capability. Comparison of acyl species suggested significantly decreased 18:2, 18:3, 20:1, 20:4, or 22:6 acyl chains within the above lipids in CMOI-null embryos. Furthermore, LCAT , ACAT1 and DGAT2 mRNA levels were also downregulated in CMOI −/− embryos. These data strongly support the notion that, in addition to cleaving β-carotene to generate retinoids, CMOI serves an additional function(s) in retinoid and lipid metabolism and point to its role in the formation of specific lipids, possibly for use in nervous system tissue. • An acyl:CoA retinol acyltransferase (ARAT) activity exists in E14.5 mouse embryo. • CMOI modulates both lecithin:retinol acyltransferase (LRAT) and ARAT activity. • Lack of embryonic CMOI results in reduced cholesteryl esters and triacylglycerols. • Lack of embryonic CMOI results in reduced mRNA levels of LCAT , ACAT1 and DGAT2 . • Embryonic CMOI influences esters from various substrates with multiple mechanisms." @default.
• W1972348965 created "2016-06-24" @default.
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• W1972348965 date "2014-01-01" @default.
• W1972348965 modified "2023-10-14" @default.
• W1972348965 title "Loss of β-carotene 15,15′-oxygenase in developing mouse tissues alters esterification of retinol, cholesterol and diacylglycerols" @default.
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• W1972348965 doi "https://doi.org/10.1016/j.bbalip.2013.08.013" @default.
• W1972348965 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3856687" @default.
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