Two stilbenes (trans-piceid and its aglycone trans-resveratrol) were investigated in the uptake across the apical membrane of the human intestinal cell line Caco-2 in order to determine their mechanisms of transport. The uptake was quantified using a reverse phase high-performance liquid chromatography method with fluorescence detection. The rate of cellular accumulation in the cells was found to be higher for trans-resveratrol than for trans-piceid. In addition, trans-resveratrol uses passive transport to cross the apical membrane of the cells, whereas the transport of trans-piceid is likely active. With regard to the mechanisms of transport, the involvement of the active transporter SGLT1 in the absorption of trans-piceid was deduced using various inhibitors directly or indirectly exploiting the activity of this transporter (glucose, phlorizin, and ouabain). Moreover, we investigated the involvement of the multidrug-related protein 2 (MRP2), an efflux pump present on the apical membrane, in stilbene efflux by Caco-2 cells. The effect of MK-571 (an MRP inhibitor) seems to implicate MRP2 as responsible for apical efflux of trans-piceid and trans-resveratrol.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jf048909e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
AhASRK1, a peanut dual-specificity kinase that activates the Ca-ROS-MAPK signalling cascade to mediate programmed cell death induced by aluminium toxicity via ABA.
Plant Physiol Biochem
January 2025
Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, College of Agriculture, GuangXi University, Nanning, 530004, China; National Demonstration Center for Experimental Plant Science Education/College of Agriculture, Nanning, 530004, China; Guangxi University Key Laboratory of Crop Cultivation and Tillage, Nanning, 530004, China. Electronic address:
Aluminium (Al)-induced programmed cell death (PCD) is thought to be a main cause of Al phytotoxicity. However, the underlying mechanism by which Al induces PCD in plants is unclear. In this study, we characterized the function of AhASRK1 (Aluminum Sensitive Receptor-like protein Kinase1), an Al-induced LRR-type receptor-like kinase gene.
View Article and Find Full Text PDFAllergen-induced activation of epithelial P2Y receptors promotes ATP exocytosis and type 2 immunity in airways.
J Allergy Clin Immunol
January 2025
Departments of Animal Science, Integrative Biology and Physiology, University of Minnesota,St. Paul, MN, 55108. Electronic address:
Background: Environmental allergens induce the release of danger signals from the airway epithelium that trigger type 2 immune responses and promote airway inflammation.
Objective: To investigate the role of allergen-stimulated P2Y receptor activation in regulating ATP, IL-33 and DNA release by human bronchial epithelial (hBE) cells and mouse airways.
Methods: hBE cells were exposed to Alternaria alternata extract and secretion of ATP, IL-33 and DNA were studied in vitro.
The Cell Polarity Protein MPP5/PALS1 Controls the Subcellular Localization of the Oncogenes and in Liver Cancer.
Int J Mol Sci
January 2025
Institute of Pathology, Medical Faculty Heidelberg, Heidelberg University, 69120 Heidelberg, Germany.
The oncogenes yes-associated protein () and transcriptional coactivator with PDZ-binding motif () are potent liver oncogenes. Because gene mutations cannot fully explain their nuclear enrichment, we aim to understand which mechanisms cause activation in liver cancer cells. The combination of proteomics and functional screening identified numerous apical cell polarity complex proteins interacting with YAP and TAZ.
View Article and Find Full Text PDFMorphological, Physiological, and Transcriptional Changes in L. Under In Vitro Polyethylene Glycol-Induced Water Stress.
Biology (Basel)
January 2025
Division of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India.
Saffron ( L.), a perennial geophyte from the Iridaceae family, blooms in autumn and thrives in Mediterranean-like climates. It is highly valued for its therapeutic and commercial uses.
View Article and Find Full Text PDFVisualization of Apical-Basal Stress Polarity Regulating Directed Cell Migration with a FRET-Based Biosensor.
ACS Sens
January 2025
Cancer Hospital of Dalian University of Technology, Shenyang 110042, China.
Intracellular morphological apical-basal polarity, regulated by conserved polarity proteins, plays a crucial role in cell migration and metastasis. In this study, using a genetically encoded Förster resonance energy transfer (FRET) biosensor to visually present the spatiotemporal stress state between the lipid rafts on the membrane and the linked actin, we first provide the evidence for the existence of intrinsic apical-basal stress polarity in tumor cells and demonstrate that this polarity is a prerequisite for the formation of flow-induced front-back stress polarity. Interestingly, our study revealed that the front-back stress polarity disappeared upon the disruption of intrinsic apical-basal stress discrepancy, resulting in a large attenuated cell migration activity reduced from 76.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!