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Nidustrin A, cysteine-retained emestrin with a unique 18-membered macrocyclic lactone from the endophytic fungus Aspergillus nidulans.
Bioorg Chem
December 2024
Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China. Electronic address:
Nidustrin A (1), the first cysteine-retained emestrin featuring a unique sulfur-containing 18-membered macrocyclic lactone, along with four biogenetically related compounds (2-5), and one known analogue secoemestrin C (6), were isolated from the large-scale culture of Aspergillus nidulans, an endophytic fungus derived from the Whitmania pigra. Compounds 2 and 3 represent the second examples of noremestrin besides the previously reported noremestrin A, and the single crystal X-ray diffraction analysis of compound 2 provided solid evidence for the intriguing skeleton of noremestrin. Their structures were determined by extensive spectroscopic data, electronic circular dichroism calculations, and single-crystal X-ray diffraction.
View Article and Find Full Text PDFRole of the HGF/c-MET pathway in resistance to immune checkpoint inhibitors in advanced non-small cell lung cancer.
Cancer Immunol Immunother
January 2025
Université Paris-Saclay, UVSQ, EA 4340 BECCOH, Boulogne-Billancourt, France.
Most of advanced non-small cell lung cancer (NSCLC) patients will experience tumor progression with immunotherapy (IO). Preliminary data suggested an association between high plasma HGF levels and poor response to IO in advanced NSCLC. Our study aimed to evaluate further the role of the HGF/MET pathway in resistance to IO in advanced NSCLC.
View Article and Find Full Text PDFProposal for a non-adhesive single-cell culture technology for primary hepatocytes.
Cytotechnology
February 2025
Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395 Japan.
Unlabelled: Primary hepatocytes (PHs) are indispensable for studying liver function, drug screening, and regenerative medicine. However, freshly isolated PHs only survive for a few hours in non-adherent suspension culture. This study proposes treatment with PEG-GRGDS, a polymer-peptide conjugate comprising polyethylene glycol (PEG) and the pentapeptide sequence Gly-Arg-Gly-Asp-Ser (GRGDS), to sustain the viability of dispersed single PHs under non-adherent conditions.
View Article and Find Full Text PDFHesperidin and Diosmin Increased Cytotoxic Activity Cisplatin on Hepatocellular Carcinoma and Protect Kidney Cells Senescence.
Asian Pac J Cancer Prev
December 2024
Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada (UGM), Sekip Utara, Yogyakarta 55281, Indonesia.
Objective: Cisplatin (Cisp) is a chemotherapy drug for treating liver cancer. Hesperidin (HSD), a flavanone, is known for its anticancer, and anti-inflammatory properties. Diosmin (DSM), a flavone glycoside, is known for its anti-oxidant effect.
View Article and Find Full Text PDFPalmitic acid induces insulin resistance and oxidative stress-mediated cell injury through accumulation of lipid rafts in murine hepatocytes.
Biochem Biophys Res Commun
December 2024
Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Lipid rafts are subdomains of the cell membrane that are rich in cholesterol and glycolipids, and they are involved in various cellular processes and pathophysiological mechanisms. However, the specific role of lipid rafts in hepatocyte dysfunction during the pathogenesis of metabolic dysfunction-associated steatotic liver disease (MASLD) is not fully understood. In this study, we investigated the impact of lipid rafts on insulin sensitivity and hepatocyte injury induced by saturated free fatty acids (sFFAs) using primary-cultured mouse hepatocytes.
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