Four-arm star-shaped (denoted as 'S') polymer adamantane-[poly(lactic--glycolic acid)--poly(-diethylaminoethyl methacrylate) poly(ethylene glycol) monomethyl ether] (S-PLGA-D-P) and its linear (denoted as 'L') counterpart (L-PLGA-D-P) were synthesized, then their self-assembled micelles were further developed to be platforms for anticancer drug delivery. Two types of polymeric micelles exhibited strong pH-responsiveness and good drug loading capacity (21.6% for S-PLGA-D-P and 22.9% for L-PLGA-D-P). Using doxorubicin (DOX) as the model drug, their DOX-loaded micelles displayed well controlled drug release behavior (18.5-19.0% of DOX release at pH 7.4 and 77.6-78.8% of DOX release at pH 5.0 within 80 h), good cytocompatibility against NIH-3T3 cells and effective anticancer efficacy against MCF-7 cells. However, the star-shaped polymeric micelles exhibited preferable stability, which was confirmed by the lower critical micelle concentration (CMC 0.0034 mg/mL) and decrease rate of particle sizes after 7 days incubation (3.5%), compared with the linear polymeric micelle L-PLGA-D-P (CMC 0.0070 mg/mL, decrease rate of particle sizes was 9.6%). Overall, these developed polymeric micelles have promising application as drug delivery system in cancer therapy.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7828523 | PMC |
| http://dx.doi.org/10.3390/nano11010188 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bioactive Functionalized Chitosan Thermo-Responsive Hydrogels as Promising Platforms for Therapeutic, Regenerative Oral, and Maxillofacial Applications.
Biotechnol J
January 2025
Department of Marine Biotechnology & Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Maritime University, Dhaka, Bangladesh.
Due to their superior physicochemical features, chitosan thermosensitive hydrogels are multipurpose platforms that are frequently used in the biomedical industry. Many investigations have been conducted recently to modify their pore dimensions, expansion, biodegradability, stimulus-reaction characteristics, and other characteristics in order to better tailor them to the complex craniofacial tissues. They have been the focus of various studies that have attempted to load biological cargos for therapeutic and regenerative uses in the oro-facial tissues.
View Article and Find Full Text PDFOrganic-Free Synthesis of High-Silica Zeolite Y with Aluminophosphate as the Aluminum Carrier.
Angew Chem Int Ed Engl
January 2025
Nanjing Tech University, College of Chemical Engineering, Nanjing, CHINA.
The wide application of zeolite Y in petrochemical industry is well known as one of the milestones in zeolite chemistry and heterogeneous catalysis. However, the traditional organic-free synthesis typically produces (hydro)thermally unstable zeolite Y with Si/Al atomic ratio (SAR) less than 2.5.
View Article and Find Full Text PDFNoninvasive in vivo imaging of macrophages: understanding tumor microenvironments and delivery of therapeutics.
Biomark Res
January 2025
BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu, 41944, Korea.
Macrophages are pivotal in the body's defense and response to inflammation. They are present in significant numbers and are widely implicated in various diseases, including cancer. While molecular and histological techniques have advanced our understanding of macrophage biology, their precise function within the cancerous microenvironments remains underexplored.
View Article and Find Full Text PDFA 3D Cell-Culture System That Uses Nano-Fibrillated Bacterial Cellulose to Prepare a Spherical Formulation of Culture Cells.
Biol Pharm Bull
January 2025
Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan.
A 3-dimensional (3D) cell culture is now being actively pursued to accomplish the in vivo-like cellular morphology and biological functions in cell culture. We recently obtained nano-fibrillated bacterial cellulose (NFBC). In this study, we developed a novel NFBC-based 3D cell-culture system, the OnGel method, and the Suspension method.
View Article and Find Full Text PDFImplications of an Individualized Resuscitation Strategy Using Continuous Rhythm and Physiologic Status Assessment During Ongoing CPR.
Resuscitation
January 2025
Department of Medicine, University of Washington, Seattle, WA; King County Emergency Medical Services, Seattle-King County Department of Public Health, Seattle, WA.
Background: Prior studies have proposed defibrillator biosignal algorithms which characterize cardiac arrest rhythm and physiologic status. We evaluated whether a novel, individualized resuscitation strategy that integrates multiple ECG and impedance-based algorithms could reduce CPR interruptions and better align rescuer actions with patient-specific physiology.
Methods: In a retrospective cohort of ventricular fibrillation out-of-hospital cardiac arrests, observed rescuer actions (rhythm analysis, shock delivery, pulse checks, and drug therapy) were compared to hypothetical actions recommended by the proposed individualized strategy.
Want 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!