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Stereoselective Reaction Enabling Simultaneous Analysis of Carbon-Carbon Double-Bond Configuration and the Position of Monounsaturated Fatty Acids through UHPLC-ESI-MRM-MS.
Anal Chem
January 2025
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Beijing Mass Spectrum Center, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.
Monounsaturated fatty acids (MUFA) are an important class of nutrients and are involved in lipid metabolism. The positions of the C=C bond and cis-trans isomerism have a significant influence on their physiological activity. However, simultaneously detecting these two structural properties has been challenging due to multiple isomers of MUFA.
View Article and Find Full Text PDFOne-pot reaction of 3-vinylchromones, aromatic aldehydes, and ammonium acetate: an efficient approach to highly functionalized 1,6-dihydropyridine derivatives.
RSC Adv
January 2025
Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
In this work, we present an efficient strategy for the straightforward synthesis of functionalized 1,6-dihydropyridine derivatives a three-component reaction of 3-vinylchromones, aromatic aldehydes, and ammonium acetate. A tandem procedure including NH aldimine formation/Michael-type addition/opening of the pyrone ring/isomerization/6π-electrocyclization/[1,5]-H shift allows rapid access to a series of dihydropyridines bearing an -hydroxybenzoyl and a benzoyl scaffold in good yields. Readily available precursors, simple heating conditions, and operational simplicity are some highlighted advantages of this transformation.
View Article and Find Full Text PDFConformational dynamics in specialized CH zinc finger domains enable zinc-responsive gene repression in S. pombe.
Protein Sci
February 2025
Department of Chemistry and Biochemistry, Center for RNA Biology, The Ohio State University, Columbus, Ohio, USA.
Loz1 is a zinc-responsive transcription factor in fission yeast that maintains cellular zinc homeostasis by repressing the expression of genes required for zinc uptake in high zinc conditions. Previous deletion analysis of Loz1 found a region containing two tandem CH zinc-fingers and an upstream "accessory domain" rich in histidine, lysine, and arginine residues to be sufficient for zinc-dependent DNA binding and gene repression. Here we report unexpected biophysical properties of this pair of seemingly classical CH zinc fingers.
View Article and Find Full Text PDFOXCT1 succinylation and activation by SUCLA2 promotes ketolysis and liver tumor growth.
Mol Cell
January 2025
Zhejiang Provincial Key Laboratory of Pancreatic Disease, the First Affiliated Hospital, Zhejiang Key Laboratory of Frontier Medical Research on Cancer Metabolism, Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310029, China; Institute of Fundamental and Transdisciplinary Research, Cancer Center, Zhejiang University, Hangzhou, Zhejiang 310029, China. Electronic address:
Ketone bodies generated in hepatocytes in the adult liver are used for nonhepatic tissues as an energy source. However, ketolysis is reactivated in hepatocellular carcinoma (HCC) cells with largely unelucidated mechanisms. Here, we demonstrate that 3-oxoacid CoA-transferase 1 (OXCT1), a rate-limiting enzyme in ketolysis, interacts with SUCLA2 upon IGF1 stimulation in HCC cells.
View Article and Find Full Text PDFBioavailability study of enantiopure (S)-Equol in CD(SD)IGS rats.
Sci Rep
January 2025
Department of Pre-Clinical Research, Anthem Biosciences Pvt. Ltd., #49, F1 & F2, Canara Bank Road, Bommasandra Industrial Area, Phase 1, Bommasandra, Bengaluru, 560099, Karnataka, India.
The therapeutic potential of (S)-Equol across various health domains, including mental health and oncology has been identified and studied enormously. However, the pharmacokinetic study on the enantiopure (S)-Equol in male and female rats under graded doses remain untouched, and the study concentrates on the same. Male and female CD(SD)IGS rats were grouped into 8 groups and some groups were administered with 20, 60 and 160 mg/kg body weight, orally and other administered with intravenous bolus injection at 10 mg/kg body weight of (S)-Equol.
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