Pegylated liposomal doxorubicin (PLD) is a chemotherapeutic agent used in the treatment of solid tumors. It has a considerably lower risk of cardiotoxicity than its parent compound, doxorubicin. PLD also has a different cutaneous side effect profile than doxorubicin, and its cutaneous toxicity can be dose limiting. We report the case of a 60-year-old woman who developed erythema and erosions in the axilla and groin while on PLD for breast cancer. Nystatin was ineffective. Biopsies revealed an interface dermatitis with epidermal dysmaturation. Bland emollients and reduction in the dose of PLD resulted in resolution of the eruption. An intertriginous eruption with histological features of epidermal dysmaturation and an interface dermatitis has been previously reported in the dermatopathology literature. This eruption appears to be a distinct cutaneous toxicity of PLD.
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Background: Alzheimer's disease (AD) is a progressive neurodegenerative disease and the most prevalent form of late-life dementia. The ε2 allele of the APOE gene encoding apolipoprotein E (APOE2) is associated with lower susceptibility to AD among the three genotypes (ε2, ε3, ε4), while APOE4 is the strongest genetic risk factor for late-onset AD. APOE plays a critical role in maintaining synaptic plasticity and neuronal function by controlling lipid homeostasis, with APOE2 having a superior function.
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January 2025
Department of Biological Science and Technology, Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan.
The blood-brain barrier (BBB) remains a major obstacle for effective delivery of therapeutics to treat central nervous system (CNS) disorders. Although transferrin receptor (TfR)-mediated transcytosis is widely employed for brain drug delivery, the inefficient release of therapeutic payload hinders their efficacy from crossing the BBB. Here, we developed a pH-responsive anti-polyethylene glycol (PEG) × anti-TfR bispecific antibody (pH-PEG engager) that can complex with PEGylated nanomedicine at physiological pH to trigger TfR-mediated transcytosis in the brain microvascular endothelial cells, while rapidly dissociating from PEGylated nanomedicine at acidic endosomes for efficient release of PEGylated nanomedicine to cross the BBB.
View Article and Find Full Text PDFJ Biosci Bioeng
December 2024
Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
Extracorporeal blood purification techniques using magnetic beads, which physically remove bacteria, fungi, viruses, and cytokines (disease agents) from the blood causing sepsis, have been studied. However, magnetic bead influx, which causes hemolysis and cytotoxicity, is an important issue. This study proposed a novel method for removing Escherichia coli from the blood using liposomes with high biocompatibility.
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December 2024
Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia.
Red grapes contain resveratrol (Resv), a polyphenol with anti-inflammatory, anti-diabetic, and anticancer properties. In this study, in silico molecular docking was used to assess the binding affinity of Resv to target proteins. Resv was encapsulated in PEGylated liposomes (LNPs) using Phospholipon 90G, cholesterol, and DSPE-mPEG.
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December 2024
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, School of Chemistry, Northeast Normal University, Changchun 130024, China.
Liposomes have attracted attention in biomedicine and pharmacy for their benefits including reduced toxicity, extended pharmacokinetics, and biocompatibility. However, their limitations include susceptibility to blood clearance, rapid disintegration, and lack of functionality, restricting their further applications. To address these challenges, inspired by the unique topological features of cyclic polymers and the specific binding property of the choline phosphate (CP) lipid, dipole-dipole interactions between CP molecules are utilized to create a detachable cyclic PEG-embedded CP liposome (d-cycPEG-lipo).
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