98%
921
2 minutes
20
The breast cancer resistance protein (BCRP) is an important efflux transporter in the blood-brain barrier (BBB), protecting the brain from a wide range of substances. In this study, we investigated if BCRP function is affected by bisphenol A (BPA), a high production volume chemical used in common consumer products, as well as by bisphenol F (BPF) and bisphenol S (BPS), which are used to substitute BPA. We employed a transwell-based in vitro cell model of iPSC-derived brain microvascular endothelial cells, where BCRP function was assessed by measuring the intracellular accumulation of its substrate Hoechst 33342. Additionally, we used in silico modelling to predict if the bisphenols could directly interact with BCRP. Our results showed that BPA significantly inhibits the transport function of BCRP. Additionally, BPA was predicted to bind to the cavity that is targeted by known BCRP inhibitors. Taken together, our findings demonstrate that BPA inhibits BCRP function in vitro, probably by direct interaction with the transporter. This effect might contribute to BPA's known impact on neurodevelopment.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8197233 | PMC |
http://dx.doi.org/10.3390/ijms22115534 | DOI Listing |
Nan Fang Yi Ke Da Xue Xue Bao
August 2025
Department of Biochemistry and Molecular Biology, Bengbu Medical University, Bengbu 233030, China.
Objectives: To study the molecular mechanisms of LDH-loaded si-NEAT1 for regulating paclitaxel resistance and tumor-associated macrophage (TAM) polarization in breast cancer.
Methods: qRT-PCR and Western blotting were used to detect the expression of lncRNA NEAT1, miR-133b, and PD-L1 in breast cancer SKBR3 cells and paclitaxel-resistant SKBR3 cells (SKBR3-PR). The effects of transfection with si-NEAT1 and miR-133b mimics on MRP, MCRP and PD-L1 expressions and cell proliferation, migration and apoptosis were investigated using qRT-PCR, Western blotting, scratch and Transwell assays, and flow cytometry.
Drug Des Devel Ther
September 2025
Hebei General Hospital, Hebei Key Laboratory of Clinical Pharmacy, Shijiazhuang, 050051, People's Republic of China.
Background: Apixaban and rivaroxaban are oral direct factor Xa inhibitors, primarily eliminated through CYP3A4-mediated metabolism and direct intestinal excretion. Previous studies suggest that palbociclib, a CDK4/6 inhibitor, may increase the systemic exposure of these anticoagulants; however, the specific pharmacokinetic mechanisms remain unclear. This study aims to evaluate the effects of palbociclib on the pharmacokinetics of apixaban and rivaroxaban using a rat model to optimize combined drug regimens.
View Article and Find Full Text PDFPharmaceutics
August 2025
Drug Clinical Trial Center, Peking University Third Hospital, Beijing 100191, China.
Physiologically based pharmacokinetic (PBPK) modeling is a powerful tool for predicting pharmacokinetics (PK) to support drug development and precision medicine. However, it has not been established for non-renal clearance pathways in patients with end-stage renal disease (ESRD), a population that bears heavy medication burden and is thereby at high risk for drug-drug-disease interactions (DDDIs). Furthermore, the pronounced inter-individual variability in PK observed in ESRD patients highlights the urgent need for individualized PBPK models.
View Article and Find Full Text PDFPharmacogenomics
August 2025
Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria La Princesa (IIS-Princesa), Madrid, Spain.
Introduction: Rosuvastatin has become a good choice in the statin group because it has shown greater efficacy in reducing lipid levels than other statins, allowing patients to reach their therapeutic goal more quickly. To date, research has shown a broad relationship between the kinetics and efficacy of this drug and the phenotype of two transporters, OATP1B1 and BCRP, encoded by and genes. However, there are many other genes whose variation may also affect the treatment.
View Article and Find Full Text PDFRecent Pat Anticancer Drug Discov
August 2025
College of Traditional Chinese Medicine, Shandong Second Medical University, Weifang, 261053, China.
Drug resistance (MDR) poses a significant challenge in breast cancer (BrCa) treatment, resulting in reduced efficacy and increased tumor recurrence. Resolving MDR in BrCa is necessary for improving the clinical efficacy of antitumor therapy. However, the molecular mechanisms underlying MDR are complex and involve various biological processes, including ABC drug transporter-mediated drug efflux, abnormal drug metabolism, and the development of the tumor microenvironment.
View Article and Find Full Text PDF