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1.
AAPS PharmSciTech ; 25(5): 126, 2024 Jun 04.
Article En | MEDLINE | ID: mdl-38834910

In the dynamic landscape of pharmaceutical advancements, the strategic application of active pharmaceutical ingredients to the skin through topical and transdermal routes has emerged as a compelling avenue for therapeutic interventions. This non-invasive approach has garnered considerable attention in recent decades, with numerous attempts yielding approaches and demonstrating substantial clinical potential. However, the formidable barrier function of the skin, mainly the confinement of drugs on the upper layers of the stratum corneum, poses a substantial hurdle, impeding successful drug delivery via this route. Ultradeformable vesicles/carriers (UDVs), positioned within the expansive realm of nanomedicine, have emerged as a promising tool for developing advanced dermal and transdermal therapies. The current review focuses on improving the passive dermal and transdermal targeting capacity by integrating functionalization groups by strategic surface modification of drug-loaded UDV nanocarriers. The present review discusses the details of case studies of different surface-modified UDVs with their bonding strategies and covers the recent patents and clinical trials. The design of surface modifications holds promise for overcoming existing challenges in drug delivery by marking a significant leap forward in the field of pharmaceutical sciences.


Administration, Cutaneous , Drug Carriers , Drug Delivery Systems , Skin Absorption , Skin , Humans , Drug Delivery Systems/methods , Skin/metabolism , Skin Absorption/physiology , Skin Absorption/drug effects , Drug Carriers/chemistry , Animals , Nanoparticles/chemistry , Surface Properties , Pharmaceutical Preparations/administration & dosage , Pharmaceutical Preparations/chemistry , Nanomedicine/methods
2.
Food Res Int ; 188: 114498, 2024 Jul.
Article En | MEDLINE | ID: mdl-38823878

The emulsifying potential of a biocompatible ionic liquid (IL) to produce lipid-based nanosystems developed to enhance the bioaccessibility of cannabidiol (CBD) was investigated. The IL (cholinium oleate) was evaluated at concentrations of 1 % and 2 % to produce nanoemulsions (NE-IL) and nanostructured lipid carriers (NLC-IL) loaded with CBD. The IL concentration of 1 % demonstrated to be sufficient to produce both NE-IL and NLC-IL with excellent stability properties, entrapment efficiency superior to 99 %, and CBD retention rate of 100 % during the storage period evaluated (i.e. 28 days at 25 °C). The in vitro digestion evaluation demonstrated that the NLC-IL provided a higher stability to the CBD, while the NE-IL improved the CBD bioaccessibility, which was mainly related to the composition of the lipid matrices used to obtain each nanosystem. Finally, it was observed that the CBD cytotoxicity was reduced when the compound was entrapped into both nanosystems.


Cannabidiol , Emulsifying Agents , Ionic Liquids , Cannabidiol/chemistry , Ionic Liquids/chemistry , Ionic Liquids/toxicity , Emulsifying Agents/chemistry , Humans , Emulsions , Digestion , Nanostructures/chemistry , Cell Survival/drug effects , Biological Availability , Nanoparticles/chemistry , Drug Carriers/chemistry , Caco-2 Cells , Particle Size
3.
Carbohydr Polym ; 339: 122250, 2024 Sep 01.
Article En | MEDLINE | ID: mdl-38823917

Glycyrrhizae Radix et rhizome/licorice is a precious herb in traditional Chinese medicine (TCM). TCM's polysaccharides are medicinally active. But herbal polysaccharides pose some limitations for topical applications. Therefore, this study aimed to utilize licorice polysaccharide via mesoporous silica nanoparticles (MSN) for anti-acne efficacy in topical delivery. The polysaccharide (GGP) was extracted with a 10 % NaOH solution. Chemical characterization suggested that GGP possesses an Mw of 267.9 kDa, comprised primarily of Glc (54.1 %) and Ara (19.12 %), and probably 1,4-linked Glc as a backbone. Then, MSN and amino-functionalized MSN were synthesized, GGP entrapped, and coated with polydopamine (PDA) to produce nanoparticle cargo. The resulted product exhibited 76 % entrapment efficiency and an in vitro release of 89 % at pH 5, which is usually an acne-prone skin's pH. Moreover, it significantly increased Sebocytes' cellular uptake. GGP effectively acted as an anti-acne agent and preserved its efficacy in synthesized nanoparticles. In vivo, the results showed that a 20 % gel of MSN-NH2-GGP@PDA could mediate an inflammatory response via inhibiting pro-inflammatory cytokines and regulating anti-inflammatory cytokines. The MSN-NH2-GGP@PDA inhibited TLR2-activated-MAPK and NF-κB pathway triggered by heat-killed P. acnes. In conclusion, fabricated MSN entrapped GGP for biomimetic anti-acne efficacy in topical application.


Acne Vulgaris , Glycyrrhiza , Nanoparticles , Polysaccharides , Silicon Dioxide , Glycyrrhiza/chemistry , Silicon Dioxide/chemistry , Polysaccharides/chemistry , Polysaccharides/pharmacology , Nanoparticles/chemistry , Animals , Porosity , Acne Vulgaris/drug therapy , Mice , Administration, Topical , Humans , Drug Carriers/chemistry , Drug Liberation , Indoles , Polymers
4.
Carbohydr Polym ; 339: 122252, 2024 Sep 01.
Article En | MEDLINE | ID: mdl-38823919

Drug delivery technologies that could convert promising therapeutics into successful therapies have been under broad research for many years. Recently, ß-glucans, natural-occurring polysaccharides extracted from many organism species such as yeast, fungi and bacteria, have attracted increasing attention to serve as drug delivery carriers. With their unique structure and innate immunocompetence, ß-glucans are considered as promising carriers for targeting delivery especially when applied in the vaccine construction and oral administration of therapeutic agents. In this review, we focus on three types of ß-glucans applied in the drug delivery system including yeast ß-glucan, Schizophyllan and curdlan, highlighting the benefits of ß-glucan based delivery system. We summarize how ß-glucans as delivery vehicles have aided various therapeutics ranging from macromolecules including proteins, peptides and nucleic acids to small molecular drugs to reach desired cells or organs in terms of loading strategies. We also outline the challenges and future directions for developing the next generation of ß-glucan based delivery systems.


Drug Carriers , Drug Delivery Systems , beta-Glucans , Humans , beta-Glucans/chemistry , Animals , Drug Carriers/chemistry , Drug Delivery Systems/methods , Sizofiran/chemistry
5.
Carbohydr Polym ; 339: 122268, 2024 Sep 01.
Article En | MEDLINE | ID: mdl-38823931

The influence of locust bean gum (LBG) galactomannans (GMs) molecular weight (Mw) to assemble microparticulate systems was evaluated, and carriers for deep lung delivery were developed. A commercial batch of LBG with a mannose/galactose (M/G) ratio of 2.4 (batch 1) was used to study the influence of different microwave partial acid hydrolysis conditions on carbohydrate composition, glycosidic linkages, and aqueous solutions viscosity. The microwave treatment did not affect the composition, presenting 4-Man (36-42 %), 4,6-Man (27-35 %), and T-Gal (24-25 %) as the main glycosidic linkages. Depolymerization led to a viscosity reduction (≤0.005 Pa·s) with no major impact on polysaccharide debranching. The structural composition of the LBG galactomannans were further elucidated with sequence-specific proteins using carbohydrate microarray technologies. A second batch of LBG (M/G 3.3) was used to study the impact of GMs with different Mw on microparticle assembling, characteristics, and insulin release kinetics. The low-Mw GMs microparticles led to a faster release (20 min) than the higher-Mw (40 min) ones, impacting the release kinetics. All microparticles exhibited a safety profile to cells of the respiratory tract. However, only the higher-Mw GMs allowed the assembly of microparticles with sizes suitable for this type of administration.


Galactose , Mannans , Molecular Weight , Plant Gums , Mannans/chemistry , Galactose/chemistry , Galactose/analogs & derivatives , Plant Gums/chemistry , Humans , Lung/metabolism , Drug Carriers/chemistry , Particle Size , Viscosity , Insulin/chemistry , Insulin/administration & dosage , Drug Liberation , Galactans/chemistry , Mannose/chemistry , Animals
6.
Arch Dermatol Res ; 316(6): 316, 2024 Jun 01.
Article En | MEDLINE | ID: mdl-38822884

In the present study, we have formulated a methotrexate (MTX)-loaded microemulsion topical gel employing quality-by-design optimization. The optimized lipid-based microemulsion was incorporated into a 2% carbopol gel. The prepared formulation was characterized for micromeritics, surface charge, surface morphology, conductivity studies, rheology studies, texture analysis/spreadability, drug entrapment, and drug loading studies. The formulation was further evaluated for drug release and release kinetics, cytotoxicity assays, drug permeation and drug retention studies, and dermatokinetics. The developed nanosystem was not only rheologically acceptable but also offered substantial drug entrapment and loading. From drug release studies, it was observed that the nanogel showed higher drug release at pH 5.0 compared to plain MTX, plain gel, and plain microemulsion. The developed system with improved dermatokinetics, nanometric size, higher drug loading, and enhanced efficacy towards A314 squamous epithelial cells offers a huge promise in the topical delivery of methotrexate.


Drug Liberation , Emulsions , Gels , Methotrexate , Skin Absorption , Methotrexate/administration & dosage , Methotrexate/chemistry , Methotrexate/pharmacokinetics , Humans , Skin Absorption/drug effects , Rheology , Lipids/chemistry , Administration, Cutaneous , Skin/metabolism , Skin/drug effects , Administration, Topical , Drug Delivery Systems/methods , Animals , Particle Size , Drug Carriers/chemistry , Nanogels/chemistry
7.
Drug Deliv ; 31(1): 2354687, 2024 Dec.
Article En | MEDLINE | ID: mdl-38823413

Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer-associated death worldwide. Beside early detection, early diagnosis, and early surgery, it is urgent to try new strategies for the treatment of HCC. Triptolide (TPL) has been employed to treat HCC. However, its clinical applications were restricted by the narrow therapeutic window, severe toxicity, and poor water-solubility. In this study, we developed cancer cell membrane-camouflaged biomimetic PLGA nanoparticles loading TPL (TPL@mPLGA) with the homologous targeting property for the treatment of HCC. The TPL@mPLGA was successfully prepared with particle size of 195.5 ± 7.5 nm and zeta potential at -21.5 ± 0.2 mV with good stability. The drug loading (DL) of TPL@mPLGA was 2.94%. After Huh-7 cell membrane coating, the natural Huh-7 cell membrane proteins were found to be retained on TPL@mPLGA, thus endowing the TPL@mPLGA with enhanced accumulation at tumor site, and better anti-tumor activity in vitro and in vivo when compared with TPL or TPL@PLGA. The TPL@mPLGA showed enhanced anti-tumor effects and reduced toxicity of TPL, which could be adopted for the treatment of HCC.


Carcinoma, Hepatocellular , Diterpenes , Epoxy Compounds , Liver Neoplasms , Nanoparticles , Phenanthrenes , Polylactic Acid-Polyglycolic Acid Copolymer , Diterpenes/administration & dosage , Diterpenes/pharmacology , Diterpenes/chemistry , Diterpenes/pharmacokinetics , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/pathology , Epoxy Compounds/chemistry , Epoxy Compounds/administration & dosage , Epoxy Compounds/pharmacology , Phenanthrenes/administration & dosage , Phenanthrenes/pharmacology , Phenanthrenes/chemistry , Phenanthrenes/pharmacokinetics , Liver Neoplasms/drug therapy , Liver Neoplasms/pathology , Humans , Polylactic Acid-Polyglycolic Acid Copolymer/chemistry , Nanoparticles/chemistry , Animals , Cell Line, Tumor , Mice , Cell Membrane/drug effects , Particle Size , Drug Carriers/chemistry , Mice, Nude , Biomimetic Materials/chemistry , Biomimetic Materials/pharmacology , Mice, Inbred BALB C
8.
Int J Nanomedicine ; 19: 5071-5094, 2024.
Article En | MEDLINE | ID: mdl-38846644

Background: The commercial docetaxel (DTX) formulation causes severe side effects due to polysorbate 80 and ethanol. Novel surfactant-free nanoparticle (NP) systems are needed to improve bioavailability and reduce side effects. However, controlling the particle size and stability of NPs and improving the batch-to-batch variation are the major challenges. Methods: DTX-loaded bovine serum albumin nanoparticles (DTX-BSA-NPs) were prepared by a novel thermal-driven self-assembly/microfluidic technology. Single-factor analysis and orthogonal test were conducted to obtain the optimal formulation of DTX-BSA-NPs in terms of particle size, encapsulation efficiency (EE), and drug loading (DL). The effects of oil/water flow rate and pump pressure on the particle size, EE, and DL were investigated to optimize the preparation process of DTX-BSA-NPs. The drug release, physicochemical properties, stability, and pharmacokinetics of NPs were evaluated. Results: The optimized DTX-BSA-NPs were uniform, with a particle size of 118.30 nm, EE of 89.04%, and DL of 8.27%. They showed a sustained release of 70% over 96 hours and an increased stability. There were some interactions between the drug and excipients in DTX-BSA-NPs. The half-life, mean residence time, and area under the curve (AUC) of DTX-BSA-NPs increased, but plasma clearance decreased when compared with DTX. Conclusion: The thermal-driven self-assembly/microfluidic combination method effectively produces BSA-based NPs that improve the bioavailability and stability of DTX, offering a promising alternative to traditional formulations.


Biological Availability , Docetaxel , Drug Stability , Nanoparticles , Particle Size , Serum Albumin, Bovine , Docetaxel/pharmacokinetics , Docetaxel/chemistry , Docetaxel/administration & dosage , Animals , Serum Albumin, Bovine/chemistry , Serum Albumin, Bovine/pharmacokinetics , Serum Albumin, Bovine/administration & dosage , Nanoparticles/chemistry , Taxoids/pharmacokinetics , Taxoids/chemistry , Taxoids/administration & dosage , Antineoplastic Agents/pharmacokinetics , Antineoplastic Agents/chemistry , Antineoplastic Agents/administration & dosage , Drug Liberation , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Rats, Sprague-Dawley , Male , Drug Compounding/methods , Rats
9.
AAPS PharmSciTech ; 25(5): 127, 2024 Jun 06.
Article En | MEDLINE | ID: mdl-38844724

The success of obtaining solid dispersions for solubility improvement invariably depends on the miscibility of the drug and polymeric carriers. This study aimed to categorize and select polymeric carriers via the classical group contribution method using the multivariate analysis of the calculated solubility parameter of RX-HCl. The total, partial, and derivate parameters for RX-HCl were calculated. The data were compared with the results of excipients (N = 36), and a hierarchical clustering analysis was further performed. Solid dispersions of selected polymers in different drug loads were produced using solvent casting and characterized via X-ray diffraction, infrared spectroscopy and scanning electron microscopy. RX-HCl presented a Hansen solubility parameter (HSP) of 23.52 MPa1/2. The exploratory analysis of HSP and relative energy difference (RED) elicited a classification for miscible (n = 11), partially miscible (n = 15), and immiscible (n = 10) combinations. The experimental validation followed by a principal component regression exhibited a significant correlation between the crystallinity reduction and calculated parameters, whereas the spectroscopic evaluation highlighted the hydrogen-bonding contribution towards amorphization. The systematic approach presented a high discrimination ability, contributing to optimal excipient selection for the obtention of solid solutions of RX-HCl.


Chemistry, Pharmaceutical , Excipients , Polymers , Raloxifene Hydrochloride , Solubility , X-Ray Diffraction , Polymers/chemistry , Excipients/chemistry , Raloxifene Hydrochloride/chemistry , Multivariate Analysis , X-Ray Diffraction/methods , Chemistry, Pharmaceutical/methods , Drug Carriers/chemistry , Drug Compounding/methods , Microscopy, Electron, Scanning/methods , Hydrogen Bonding , Crystallization/methods
10.
Sci Rep ; 14(1): 13050, 2024 06 06.
Article En | MEDLINE | ID: mdl-38844812

This study introduces a novel approach for synthesizing a Cu(II)-based coordination polymer (CP), {[Cu(L)(4,4´-OBA)]·H2O}n (1), using a mixed ligand method. The CP was successfully prepared by reacting Cu(NO3)2·3H2O with the ligand 3,6-bis(benzimidazol-1-yl)pyridazine in the presence of 4,4´-H2OBA, demonstrating an innovative synthesis strategy. Furthermore, a novel hydrogel composed of hyaluronic acid (HA) and carboxymethyl chitosan (CMCS) with a porous structure was developed for drug delivery purposes. This hydrogel facilitates the encapsulation of CP1, and enables the loading of paclitaxel onto the composite to form HA/CMCS-CP1@paclitaxel. In vitro cell experiments demonstrated the promising modulation of thyroid cancer biomarker genes S100A6 and ARID1A by HA/CMCS-CP1@paclitaxel. Finally, reinforcement learning simulations were employed to optimize novel metal-organic frameworks, underscoring the innovative contributions of this study.


Copper , Hydrogels , Paclitaxel , Thyroid Neoplasms , Paclitaxel/chemistry , Paclitaxel/pharmacology , Copper/chemistry , Hydrogels/chemistry , Humans , Thyroid Neoplasms/drug therapy , Thyroid Neoplasms/pathology , Chitosan/chemistry , Chitosan/analogs & derivatives , Cell Line, Tumor , Hyaluronic Acid/chemistry , Coordination Complexes/chemistry , Coordination Complexes/pharmacology , Drug Carriers/chemistry , Metal-Organic Frameworks/chemistry , Metal-Organic Frameworks/pharmacology
11.
Int J Nanomedicine ; 19: 5059-5070, 2024.
Article En | MEDLINE | ID: mdl-38836007

Purpose: The purpose of this study is to address the need for efficient drug delivery with high drug encapsulation efficiency and sustained drug release. We aim to create nanoparticle-loaded microgels for potential applications in treatment development. Methods: We adopted the process of ionic gelation to generate microgels from sodium alginate and carboxymethyl cellulose. These microgels were loaded with doxorubicin-conjugated amine-functionalized zinc ferrite nanoparticles (AZnFe-NPs). The systems were characterized using various techniques. Toxicity was evaluated in MCF-7 cells. In vitro release studies were conducted at different pH levels at 37 oC, with the drug release kinetics being analyzed using various models. Results: The drug encapsulation efficiency of the created carriers was as high as 70%. The nanoparticle-loaded microgels exhibited pH-responsive behavior and sustained drug release. Drug release from them was mediated via a non-Fickian type of diffusion. Conclusion: Given their high drug encapsulation efficiency, sustained drug release and pH-responsiveness, our nanoparticle-loaded microgels show promise as smart carriers for future treatment applications. Further development and research can significantly benefit the field of drug delivery and treatment development.


Delayed-Action Preparations , Doxorubicin , Drug Carriers , Drug Liberation , Ferric Compounds , Microgels , Doxorubicin/chemistry , Doxorubicin/pharmacokinetics , Doxorubicin/pharmacology , Doxorubicin/administration & dosage , Humans , Delayed-Action Preparations/chemistry , Delayed-Action Preparations/pharmacokinetics , Delayed-Action Preparations/pharmacology , MCF-7 Cells , Ferric Compounds/chemistry , Hydrogen-Ion Concentration , Microgels/chemistry , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Alginates/chemistry , Amines/chemistry , Carboxymethylcellulose Sodium/chemistry , Nanoparticles/chemistry , Zinc/chemistry , Zinc Compounds/chemistry , Cell Survival/drug effects
12.
Sci Adv ; 10(23): eadk9996, 2024 Jun 07.
Article En | MEDLINE | ID: mdl-38838152

Immunotoxicity remains a major hindrance to chemotherapy in cancer therapy. Nanocarriers may alleviate the immunotoxicity, but the optimal design remains unclear. Here, we created two variants of maytansine (DM1)-loaded synthetic high-density lipoproteins (D-sHDL) with either physically entrapped (ED-sHDL) or chemically conjugated (CD-sHDL) DM1. We found that CD-sHDL showed less accumulation in the tumor draining lymph nodes (DLNs) and femur, resulting in a lower toxicity against myeloid cells than ED-sHDL via avoiding scavenger receptor class B type 1 (SR-B1)-mediated DM1 transportation into the granulocyte-monocyte progenitors and dendritic cells. Therefore, higher densities of lymphocytes in the tumors, DLNs, and blood were recorded in mice receiving CD-sHDL, leading to a better efficacy and immune memory of CD-sHDL against colon cancer. Furthermore, liposomes with conjugated DM1 (CD-Lipo) showed lower immunotoxicity than those with entrapped drug (ED-Lipo) through the same mechanism after apolipoprotein opsonization. Our findings highlight the critical role of drug loading patterns in dictating the biological fate and activity of nanomedicine.


Nanoparticles , Animals , Nanoparticles/chemistry , Mice , Cell Line, Tumor , Humans , Scavenger Receptors, Class B/metabolism , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Lipoproteins, HDL/metabolism , Drug Carriers/chemistry , Colonic Neoplasms/drug therapy , Colonic Neoplasms/immunology , Colonic Neoplasms/metabolism , Colonic Neoplasms/pathology , Liposomes/chemistry , Lipids/chemistry
13.
Int J Nanomedicine ; 19: 4893-4906, 2024.
Article En | MEDLINE | ID: mdl-38828202

Introduction: The tumor microenvironment (TME) has attracted considerable attention as a potential therapeutic target for cancer. High levels of reactive oxygen species (ROS) in the TME may act as a stimulus for drug release. In this study, we have developed ROS-responsive hyaluronic acid-bilirubin nanoparticles (HABN) loaded with doxorubicin (DOX@HABN) for the specific delivery and release of DOX in tumor tissue. The hyaluronic acid shell of the nanoparticles acts as an active targeting ligand that can specifically bind to CD44-overexpressing tumors. The bilirubin core has intrinsic anti-cancer activity and ROS-responsive solubility change properties. Methods & Results: DOX@HABN showed the HA shell-mediated targeting ability, ROS-responsive disruption leading to ROS-mediated drug release, and synergistic anti-cancer activity against ROS-overproducing CD44-overexpressing HeLa cells. Additionally, intravenously administered HABN-Cy5.5 showed remarkable tumor-targeting ability in HeLa tumor-bearing mice with limited distribution in major organs. Finally, intravenous injection of DOX@HABN into HeLa tumor-bearing mice showed synergistic anti-tumor efficacy without noticeable side effects. Conclusion: These findings suggest that DOX@HABN has significant potential as a cancer-targeting and TME ROS-responsive nanomedicine for targeted cancer treatment.


Bilirubin , Doxorubicin , Hyaluronan Receptors , Hyaluronic Acid , Nanomedicine , Nanoparticles , Reactive Oxygen Species , Tumor Microenvironment , Hyaluronic Acid/chemistry , Tumor Microenvironment/drug effects , Animals , Reactive Oxygen Species/metabolism , Humans , Doxorubicin/pharmacology , Doxorubicin/chemistry , Doxorubicin/pharmacokinetics , Doxorubicin/administration & dosage , Nanoparticles/chemistry , Mice , HeLa Cells , Hyaluronan Receptors/metabolism , Bilirubin/chemistry , Bilirubin/pharmacology , Bilirubin/pharmacokinetics , Drug Liberation , Mice, Inbred BALB C , Mice, Nude , Xenograft Model Antitumor Assays , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacokinetics , Antineoplastic Agents/administration & dosage , Neoplasms/drug therapy , Neoplasms/metabolism
14.
BMC Biotechnol ; 24(1): 38, 2024 Jun 03.
Article En | MEDLINE | ID: mdl-38831403

BACKGROUND: Antibiotic-containing carrier systems are one option that offers the advantage of releasing active ingredients over a longer period of time. In vitro sustained drug release from a carrier system consisting of microporous ß-TCP ceramic and alginate has been reported in previous works. Alginate dialdehyde (ADA) gelatin gel showed both better mechanical properties when loaded into a ß-TCP ceramic and higher biodegradability than pure alginate. METHODS: Dual release of daptomycin and BMP-2 was measured on days 1, 2, 3, 6, 9, 14, 21, and 28 by HPLC and ELISA. After release, the microbial efficacy of the daptomycin was verified and the biocompatibility of the composite was tested in cell culture. RESULTS: Daptomycin and the model compound FITC protein A (n = 30) were released from the composite over 28 days. A Daptomycin release above the minimum inhibitory concentration (MIC) by day 9 and a burst release of 71.7 ± 5.9% were observed in the loaded ceramics. Low concentrations of BMP-2 were released from the loaded ceramics over 28 days.


Anti-Bacterial Agents , Bone Morphogenetic Protein 2 , Calcium Phosphates , Ceramics , Daptomycin , Gelatin , Bone Morphogenetic Protein 2/chemistry , Bone Morphogenetic Protein 2/metabolism , Daptomycin/chemistry , Daptomycin/pharmacology , Gelatin/chemistry , Ceramics/chemistry , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/pharmacology , Calcium Phosphates/chemistry , Animals , Microbial Sensitivity Tests , Mice , Drug Carriers/chemistry , Drug Liberation
15.
Int J Nanomedicine ; 19: 5021-5044, 2024.
Article En | MEDLINE | ID: mdl-38832335

Nanoparticle systems integrating alginate and chitosan emerge as a promising avenue to tackle challenges in leveraging the potency of pharmacological active agents. Owing to their intrinsic properties as polysaccharides, alginate and chitosan, exhibit remarkable biocompatibility, rendering them conducive to bodily integration. By downsizing drug particles to the nano-scale, the system enhances drug solubility in aqueous environments by augmenting surface area. Additionally, the system orchestrates extended drug release kinetics, aligning well with the exigencies of chronic drug release requisite for antibacterial therapeutics. A thorough scrutiny of existing literature underscores a wealth of evidence supporting the utilization of the alginate-chitosan nanoparticle system for antibacterial agent delivery. Literature reviews present abundant evidence of the utilization of nanoparticle systems based on a combination of alginate and chitosan for antibacterial agent delivery. Various experiments demonstrate enhanced antibacterial efficacy, including an increase in the inhibitory zone diameter, improvement in the minimum inhibitory concentration, and an enhancement in the bacterial reduction rate. This enhancement in efficacy occurs due to mechanisms involving increased solubility resulting from particle size reduction, prolonged release effects, and enhanced selectivity towards bacterial cell walls, stemming from ionic interactions between positively charged particles and teichoic acid on bacterial cell walls. However, clinical studies remain limited, and there are currently no marketed antibacterial drugs utilizing this system. Hence, expediting clinical efficacy validation is crucial to maximize its benefits promptly.


Alginates , Anti-Bacterial Agents , Chitosan , Nanoparticles , Chitosan/chemistry , Chitosan/pharmacology , Alginates/chemistry , Alginates/pharmacology , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/pharmacokinetics , Humans , Nanoparticles/chemistry , Particle Size , Drug Liberation , Drug Carriers/chemistry , Microbial Sensitivity Tests , Animals , Drug Delivery Systems/methods , Solubility , Bacteria/drug effects
16.
Drug Deliv ; 31(1): 2361165, 2024 Dec.
Article En | MEDLINE | ID: mdl-38832506

With the rapid development of drug delivery systems, extracellular vesicles (EVs) have emerged as promising stars for improving targeting abilities and realizing effective delivery. Numerous studies have shown when compared to conventional strategies in targeted drug delivery (TDD), EVs-based strategies have several distinguished advantages besides targeting, such as participating in cell-to-cell communications and immune response, showing high biocompatibility and stability, penetrating through biological barriers, etc. In this review, we mainly focus on the mass production of EVs including the challenges and strategies for scaling up EVs production in a cost-effective and reproducible manner, the loading and active targeting methods, and examples of EVs as vehicles for TDD in consideration of potential safety and regulatory issues associated. We also conclude and discuss the rigor and reproducibility of EVs production, the current research status of the application of EVs-based strategies to targeted drug delivery, clinical conversion prospects, and existing chances and challenges.


Drug Delivery Systems , Extracellular Vesicles , Extracellular Vesicles/metabolism , Humans , Drug Delivery Systems/methods , Drug Carriers/chemistry , Animals
17.
J Biomed Mater Res B Appl Biomater ; 112(5): e35410, 2024 May.
Article En | MEDLINE | ID: mdl-38728112

The dissipative particle dynamics (DPD) simulation was used to study the morphologies and structures of the paclitaxel-loaded PLA-b-PEO-b-PLA polymeric micelle. We focused on the influences of PLA block length, PLA-b-PEO-b-PLA copolymer concentration, paclitaxel drug content on morphologies and structures of the micelle. Our simulations show that: (i) with the PLA block length increase, the self-assemble structure of PLA-b-PEO-b-PLA copolymers with paclitaxel vary between onion-like structure (core-middle layer-shell) to spherical core-shell structure. The PEO shell thins and the size of the PLA core increases. The onionlike structures are comprised of the PEO hydrophilic core, the PLA hydrophobic middle layer, and the PEO hydrophilic shell, the distribution of the paclitaxel drug predominantly occurs within the hydrophobic intermediate layer; (ii) The system forms a spherical core-shell structure when a small amount of the drug is added, and within a certain range, the size of the spherical structure increases as the drug amount increases. When the drug contents (volume fraction) cdrug = 10%, it can be observed that the PLA4-b-PEO19-b-PLA4 spherical structures connect to form rod-shaped structures. With the length of PLA block NPLA = 8, as the paclitaxel drug concentrations cdrug = 4%, PEO has been insufficient to completely encapsulate the PLA and paclitaxel drug beads. To enhance drug loading capacity while maintaining stability of the system in aqueous solution, the optimal composition for loading paclitaxel is PLA4-b-PEO19-b-PLA4; the drug content is not higher than 4%; (iii) The paclitaxel-loaded PLA4-b-PEO19-b-PLA4 micelle undergo the transition from onionlike (core-middle layer-shell) to spherical (core-shell) to rod-shaped and lamellar structure as the PLA4-b-PEO19-b-PLA4 copolymer concentration increases from ccp = 10% to 40%.


Micelles , Paclitaxel , Polyesters , Polyethylene Glycols , Paclitaxel/chemistry , Paclitaxel/pharmacokinetics , Polyethylene Glycols/chemistry , Polyesters/chemistry , Hydrophobic and Hydrophilic Interactions , Molecular Dynamics Simulation , Drug Carriers/chemistry
18.
AAPS PharmSciTech ; 25(5): 108, 2024 May 10.
Article En | MEDLINE | ID: mdl-38730090

Wound healing presents a complex physiological process that involves a sequence of events orchestrated by various cellular and molecular mechanisms. In recent years, there has been growing interest in leveraging nanomaterials and peptides to enhance wound healing outcomes. Nanocarriers offer unique properties such as high surface area-to-volume ratio, tunable physicochemical characteristics, and the ability to deliver therapeutic agents in a controlled manner. Similarly, peptides, with their diverse biological activities and low immunogenicity, hold great promise as therapeutics in wound healing applications. In this review, authors explore the potential of peptides as bioactive components in wound healing formulations, focusing on their antimicrobial, anti-inflammatory, and pro-regenerative properties. Despite the significant progress made in this field, several challenges remain, including the need for standardized characterization methods, optimization of biocompatibility and safety profiles, and translation from bench to bedside. Furthermore, developing multifunctional nanomaterial-peptide hybrid systems represents promising avenues for future research. Overall, the integration of nanomaterials made up of natural or synthetic polymers with peptide-based formulations holds tremendous therapeutic potential in advancing the field of wound healing and improving clinical outcomes for patients with acute and chronic wounds.


Drug Carriers , Peptides , Wound Healing , Wound Healing/drug effects , Humans , Peptides/chemistry , Peptides/administration & dosage , Peptides/pharmacology , Drug Carriers/chemistry , Animals , Drug Delivery Systems/methods , Nanostructures/chemistry , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/administration & dosage , Anti-Inflammatory Agents/chemistry , Nanoparticles/chemistry , Anti-Infective Agents/administration & dosage , Anti-Infective Agents/pharmacology , Anti-Infective Agents/chemistry
19.
AAPS PharmSciTech ; 25(5): 104, 2024 May 09.
Article En | MEDLINE | ID: mdl-38724836

Salinomycin (Sal) has been recently discovered as a novel chemotherapeutic agent against various cancers including prostate cancer which is one of the most commonly diagnosed cancers affecting male populations worldwide. Herein we designed salinomycin nanocarrier (Sal-NPs) to extend its systemic circulation and to increase its anticancer potential. Prepared nanoform showed high encapsulation and sustained release profile for salinomycin. The present study elucidated the cytotoxicity and mechanism of apoptotic cell death of Sal-NPs against prostate cancer both in vitro and in vivo. At all measured concentrations, Sal-NPs showed more significant cytotoxicity to DU145 and PC3 cells than Sal alone. This effect was mediated by apoptosis, as confirmed by ROS generation, loss of MMP and cell cycle arrest at the G1 phase in both cells. Sal-NPs efficiently inhibited migration of PC3 and DU145 cells via effectively downregulating the epithelial mesenchymal transition. Also, the results confirmed that Sal-NPs can effectively inhibit the induction of Prostate adenocarcinoma in male Wistar rats. Sal-NPs treatment exhibited a decrease in tumour sizes, a reduction in prostate weight, and an increase in body weight, which suggests that Sal-NPs is more effective than salinomycin alone. Our results suggest that the molecular mechanism underlying the Sal-NPs anticancer effect may lead to the development of a potential therapeutic strategy for treating prostate adenocarcinoma.


Adenocarcinoma , Antineoplastic Agents , Apoptosis , Drug Carriers , Epithelial-Mesenchymal Transition , Nanoparticles , Prostatic Neoplasms , Pyrans , Rats, Wistar , Male , Prostatic Neoplasms/drug therapy , Prostatic Neoplasms/pathology , Prostatic Neoplasms/metabolism , Animals , Pyrans/pharmacology , Pyrans/administration & dosage , Apoptosis/drug effects , Humans , Rats , Cell Line, Tumor , Adenocarcinoma/drug therapy , Adenocarcinoma/pathology , Adenocarcinoma/metabolism , Drug Carriers/chemistry , Nanoparticles/chemistry , Epithelial-Mesenchymal Transition/drug effects , Antineoplastic Agents/pharmacology , Antineoplastic Agents/administration & dosage , Cell Movement/drug effects , PC-3 Cells , Drug Delivery Systems/methods , Polyether Polyketides
20.
AAPS PharmSciTech ; 25(5): 106, 2024 May 09.
Article En | MEDLINE | ID: mdl-38724834

The primary factor underlying the virulence of Candida albicans is its capacity to form biofilms, which in turn leads to recurrent complications. Over-the-counter antifungal treatments have proven ineffective in eliminating fungal biofilms and the inflammatory cytokines produced during fungal infections. Chitosan nanoparticles offer broad and versatile therapeutic potential as both antifungal agents and carriers for antifungal drugs to combat biofilm-associated Candida infections. In our study, we endeavoured to develop chitosan nanoparticles utilising chitosan and the antifungal crosslinker phytic acid targeting C. albicans. Phytic acid, known for its potent antifungal and anti-inflammatory properties, efficiently crosslinks with chitosan. The nanoparticles were synthesised using the ionic gelation technique and subjected to analyses including Fourier transform infrared spectroscopy, dynamic light scattering, and zeta potential analysis. The synthesised nanoparticles exhibited dimensions with a diameter (Dh) of 103 ± 3.9 nm, polydispersity index (PDI) of 0.33, and zeta potential (ZP) of 37 ± 2.5 mV. These nanoparticles demonstrated an antifungal effect with a minimum inhibitory concentration (MIC) of 140 ± 2.2 µg/mL, maintaining cell viability at approximately 90% of the MIC value and reducing cytokine levels. Additionally, the nanoparticles reduced ergosterol content and exhibited a 62% ± 1.2 reduction in biofilm susceptibility, as supported by colony-forming unit (CFU) and XTT assays-furthermore, treatment with nanoparticles reduced exopolysaccharide production and decreased secretion of aspartyl protease by C. albicans. Our findings suggest that the synthesised nanoparticles effectively combat Candida albicans infections. In vivo studies conducted on a mouse model of vaginal candidiasis confirmed the efficacy of the nanoparticles in combating fungal infections in vivo.


Antifungal Agents , Biofilms , Candida albicans , Chitosan , Microbial Sensitivity Tests , Nanoparticles , Phytic Acid , Chitosan/chemistry , Biofilms/drug effects , Nanoparticles/chemistry , Antifungal Agents/pharmacology , Antifungal Agents/administration & dosage , Animals , Candida albicans/drug effects , Mice , Microbial Sensitivity Tests/methods , Phytic Acid/pharmacology , Phytic Acid/administration & dosage , Phytic Acid/chemistry , Female , Candidiasis/drug therapy , Particle Size , Drug Carriers/chemistry , Cross-Linking Reagents/chemistry , Cytokines/metabolism
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