DRUG DELIVERY
·
2016
·
IF 4.843
Wenping Wang,Yaqin Cai,Guangxing Zhang,Yanhua Liu,Hong Sui,Kinam Park,Hong Wang
Lung-targeting sophoridine-loaded poly(lactide-co-glycolide) (PLGA) microspheres were constructed by a simple oil-in-oil emulsion-solvent evaporation method. The obtained microspheres were systematically studied on their morphology, size distribution, drug loading, encapsulation efficiency, in vitro release profile, and biodistribution in rats. The drug-loaded microparticles showed as tiny spheres under SEM and had an average size of 17 μm with 90% of the microspheres ranging from 12 to 24 μm. The drug loading and encapsulation efficiency were 65% and 6.5%, respectively. The in vitro drug release behavior of microspheres exhibited an initial burst of 16.6% at 4 h and a sustained-release period of 14 days. Drug concentration in lung tissue of rats was 220.10 μg/g for microspheres and 6.77 μg/g for solution after intraveneous injection for 30 min, respectively. And the microsphere formulation showed a significantly higher drug level in lung tissue than in other major organs and blood samples for 12 days. These results demonstrated that the obtained PLGA microspheres could potentially improve the treatment efficacy of sophoridine against lung cancer.
研究领域:
药剂学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Lujie Zong,Qing Wang,Houyi Sun,Qian Wu,Yaozeng Xu,Huilin Yang,Shujun Lv,Liang Zhang,Dechun Geng
Osteoarthritis (OA) is a common joint disease characterized by progressive cartilage degeneration. Unfortunately, currently available clinical drugs are mainly analgesics and cannot alleviate the development of OA. Kartogenin (KGN) has been found to promote the differentiation of bone marrow mesenchymal stem cells (BMSCs) into chondrocytes for the treatment of cartilage damage in early OA. However, KGN, as a small hydrophobic molecule, is rapidly cleared from the synovial fluid after intra-articular injection. This study synthesized a KGN-loaded nanocarrier based on PLGA/polydopamine core/shell structure to treat OA. The fluorescence signal of KGN@PLGA/PDA-PEG-E7 nanoparticles lasted for 4 weeks, ensuring long-term sustained release of KGN from a single intra-articular injection. In addition, the polyphenolic structure of PDA enables it to effectively scavenge reactive oxygen species, and the BMSC-targeting peptide E7 (EPLQLKM) endows KGN@PLGA/PDA-PEG-E7 NPs with an effective affinity for BMSCs. As a result, the KGN@PLGA/PDA-PEG-E7 nanoparticles could effectively induce cartilage in vitro and protect the cartilage and subchondral bone in a rat ACLT model. This therapeutic strategy could also be extended to the delivery of other drugs, targeting other tissues to treat joint diseases.
研究领域:
生物医学工程
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药剂学
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骨科
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2024
·
IF 2.7
Sicong Tu,Shuting Mai,Dan Shu,Yuxin Huang,Zhihong Nie,Yang Wang,Wuli Yang
It is challenging for the manufacturing of microspheres loaded with peptide due to the complicated preparation process and the issue of burst release. In this construct, a microfluidic flow-focusing device is developed to prepare and optimize poly (lactic- co -glycolic acid) (PLGA) Exenatide −loaded microspheres. Surfactants was added to greatly improve the stability of the emulsion, leading to increase drug loading capacity. By increasing the particle size of the drug-loaded microspheres to 30 μm, the burst release was significantly reduced. Additionally, multi-channel droplet microfluidic devices are prepared with the capability to achieve a 100-fold increase in throughput, which could achieve a production rate of 2 g per hour.
研究领域:
药剂学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2025
·
IF 5.2
Bingwen Zhang,Haofan Liu,Yixuan Li,Tong Cao,Jinkuo Cao,Liandong Hu
This paper proposes a novel and efficient centrifugal microfluidic technology to prepare risperidone-loaded poly(lactic-co-glycolic acid) (PLGA) microspheres (RIS-MS). The effects of key parameters, including PLGA concentration and type, microchannel inner diameter and centrifugal speed on particle size, morphology and drug release were evaluated and optimized. The in vivo pharmacokinetic study of RIS-MS was conducted in rabbits. The results demonstrated that RIS-MS could be produced from microchannels with inner diameters of 170–210 μm at a centrifugal speed of 400 revolutions per minute (rpm) when the PLGA content is 15 % or higher. The mean plasma concentration of RIS-MS was more stable and C max of RIS-MS was significantly lower than that of the suspension group, and the RIS-MS could maintain the release of RIS in rabbits for up to 42 days. This study provided pioneering ideas for developing microspheres using centrifugal microfluidic technology. The optimized RIS-MS can make excellent sustained release and have the potential for the long-acting therapy of schizophrenia.
研究领域:
制药工程
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生物医学工程
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药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiang Zhang,Yurui Xu,Wanyao Chen,Laiyou Wang,Xinghai Ning,Haixiong Ge
UV-nanoimprint lithography (UV-NIL) has been proved to be an efficient method for preparing nanodrug delivery systems. Herein, we used UV-NIL associated with the glancing angle deposition (GLAD) process of electron beam evaporation to prepare Au-coated PLGA nanocylinders loaded with PTX (PTX-PLGA-Au NCs) to enhance anticancer efficacy by the cooperative treatment of photothermal-chemotherapy. PTX-PLGA-Au NCs with different length-to-diameter ratios can be prepared by controlling the concentration of PLGA and regulating the angle of GLAD. Upon 808 nm near-infrared (NIR) irradiation, PTX-PLGA-Au NCs exhibit a stable and repeatable photothermal effect. Besides, hyperthermia generated by the Au layer on the surface of PTX-PLGA-Au NCs under laser irradiation promoted the rapid release of PTX. The in vitro studies demonstrated that PTX-PLGA-Au NCs can achieve the synergistic effect of photothermal-chemotherapy, leading to increased cell cytotoxicity. Therefore, UV-NIL combined with the GLAD process produced a promising nanofabrication method for efficiently developing a multifunctional nanoplatform for cancer treatment.
研究领域:
纳米医学
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肿瘤学
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药剂学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2021
·
IF 5.039
Yuzhe Chen,Wenxuan Zhao,Honglian Dai
Chitosan (CS) is a type of natural polysaccharide, widely used as a biomaterial on account of its great biocompatibility and the multitudes of functional groups on the long chitosan chain, making it easy for property augmentations. Nevertheless, the lack of workability and mechanical capacity limits the applications. Herein, electrospinning was chosen to fabricate oriented chitosan/polyethylene oxide (PEO) nanofibres decorated by integrin-targeting polypeptides (RGD, Arg-Gly-Asp), which is essential for cell adhesion. At the same time, porous PLGA-PEG membranes were taken as a shell of the composite film, which can provide mechanical support for the scaffold. Adequate topological anisotropic information from oriented nanofibres helps the scaffold simulate the natural axon structure, which can induce accelerated regeneration of neurotmesis. Moreover, β-Tricalcium Phosphate (β-TCP) nanoparticles were brought into nanofibers to neutralize the acidic environment produced by the degeneration of PLGA-PEG. Cell viability tests at the in vitro level and dorsal root ganglion (DRG, 1-day sucking SD rat) co-culture detection proved that the scaffold possesses excellent biocompatibility while guiding oriented regeneration of damaged nerves. In this study, a CS-RGD/PEO/β-TCP/PLGA-PEG porous composite scaffold with low cytotoxicity was fabricated. The scaffold can not only lead to the oriented growth of nerves but also has selectivity, which can help nutrient exchange while inhibiting the invasion of fibrous tissue.
研究领域:
生物医学工程
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材料科学
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神经再生
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
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2021
·
IF 0
Jia Li,Shuai Lin,Yue Long Ma,Xian Hua Xu,Wei Zheng,Li Bo Li
The coaxial electrospun fibers with large specific surface area, high porosity and core-shell structure have been great applied in biomedical field, especially as drug delivery carriers. In this paper, PLGA(polylactic acid/glycolic acid copolymer) was used as the core and the mixture of PLGA and gelatin was used as the shell. PLGA/gelatin fiber was prepared by coaxial electrospinning technology. The effects of different parameters on the surface morphology and the diameter of fibers were investigated.
研究领域:
生物材料学
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医学工程
✓ 已验证
DOI
PLoS One
·
2011
·Vol. 6
·期 9
·e25433
·
IF 4.411
Lihua Cheng,Chengmeng Jin,Wen Lv,Qiuping Ding,Xu Han
Background
Cisplatin is a potent anticancer drug, but its clinical application has been limited due to its undesirable physicochemical characteristics and severe side effects. Better drug formulations for cisplatin are highly desired.
Methodology/Principal Findings
Herein, we have developed a nanoparticle formulation for cisplatin with high encapsulation efficiency and reduced toxicity by using cisplatin-crosslinked carboxymethyl cellulose (CMC) core nanoparticles made from poly(lactide-co-glycolide)-monomethoxy-poly(polyethylene glycol) copolymers (PLGA-mPEG). The nanoparticles have an average diameter of approximately 80 nm measured by transmission electron microscope (TEM). The encapsulation efficiency of cisplatin in the nanoparticles is up to 72%. Meanwhile, we have also observed a controlled release of cisplatin in a sustained manner and dose-dependent treatment efficacy of cisplatin-loaded nanoparticles against IGROV1-CP cells. Moreover, the median lethal dose (LD 50 ) of the cisplatin-loaded nanoparticles was more than 100 mg/kg by intravenous administration, which was much higher than that of free cisplatin.
Conclusion
This developed cisplatin-loaded nanoparticle is a promising formulation for the delivery of cisplatin, which will be an effective therapeutic regimen of ovarian cancer without severe side effects and cumulative toxicity.
研究领域:
药剂学
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肿瘤学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomedical Materials
·
2021
·Vol. 16
·期 6
·065014
·
IF 3.715
Caini Yuan,Xinyun Long,Jinghua Li,Qing Cai
As a biocompatible and biodegradable polymer, poly(lactide-co-glycolide) (PLGA) has been widely used as a carrier to achieve controlled drug delivery in various forms. Focusing on skin tumor treatment, herein 5-fluorouracil (5-FU) was embedded into the core of coaxially electrospun PLGA fibers to get a drug-loaded core–shell fibrous membrane. In the coaxial electrospinning, poly(vinylpyrrolidone) was applied in the inner flow to facilitate the formation of the core–shell structured fibers. The morphology and micro-structure of the fibers were characterized by scanning electron microscope and transmission electron microscope. The influences of the molecular weights and chemical compositions of PLGA copolymers on the release behaviors were studied. The cytotoxicity of the fibers was characterized by cell proliferation and living-dead cell staining experiments. The results showed that faster release rates would be obtained if the copolymers were of lower molecular weights and higher fraction of glycidyl unit. All the prepared 5-FU loaded fibrous membranes were non-cytotoxic, suggesting their potential applications in skin tumor treatment.
研究领域:
药学
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生物医学工程
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Wentao Ma,Shiwen Gong,Xianbiao He,Die Hu,Bo Cheng,Jing Yang,Binbin Li,Xinyu Wang
Thrombosis is a critical marker of cardiovascular diseases such as stroke and myocardial infarction. Timely diagnosis and dissolution of thrombi can significantly reduce patient mortality risk. Theranostic nanoparticles with targeting capabilities offer a promising solution to this issue. We developed fucoidan-modified PLGA nanoparticles loaded with indocyanine green (ICG) and lumbrokinase (LK) (FCP-ICG@LK NPs) to achieve integrated diagnosis and treatment of thrombotic diseases while minimizing hemorrhagic risks. Targeting experiments demonstrated the affinity of fucoidan for P-selectin. In a mouse model of carotid thrombosis, FCP-ICG@LK NPs demonstrated excellent diagnostic and monitoring capabilities while effectively dissolving thrombi under near-infrared light. Compared with free LK, FCP-ICG@LK NPs showed better thrombolysis effects at the same dose. Furthermore, bleeding risk assessment experiments indicated that FCP-ICG@LK NPs do not induce hemorrhagic risks. FCP-ICG@LK NPs showed no significant cytotoxicity or hemolysis. These results indicate that fucoidan-modified PLGA drug-loaded nanoparticles are a promising thrombus-targeted theranostic agent.
研究领域:
生物医学工程
·
药剂学
·
心血管疾病研究
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2025
·
IF 4.8
Yicai Luo,Ziwei Wu,Yingjuan Zhang,Yang Qiao,Yinge Wei,Xuan Yan,Xiangyu Ma,Xianxian Huang,Xiaoxia Zhong,Zhimao Ye,Xinping Lu,Hongbing Liao*
Introduction: Diabetes mellitus often leads to bone metabolism disorders, hindering bone regeneration and delaying the healing of bone defects. β-Ecdysone, a plant-derived hormone known for its wide range of physiological activities, possesses hypoglycemic effects and promotes osteogenic differentiation. This study developed a composite PLGA slow-release scaffold loaded with β-ecdysone to enhance its bioavailability through topical administration and to investigate its potential to heal diabetic bone defects.Methods: The composite scaffolds were fabricated using solution casting/particle leaching and freeze-drying techniques. Then a series of characterizations were subjected to test the performance of composite scaffolds, and in vitro safety of the composite scaffolds was tested by CCK8 assay and live/dead cell staining. Further, micro-CT and histology to evaluate the effect of β-E/PLGA composite scaffolds on healing of skull defects in diabetic rats at 4 and 8 weeks after implantation. Simultaneously, the safety of the scaffolds in vivo was also evaluated.Results: The material characterization results indicated that, in comparison to the single-pore size scaffold, the composite scaffold exhibited superior porosity, swelling ratio, drug loading capacity, and mechanical properties. Additionally, the composite scaffolds showed appropriate degradation performance and sustained drug release profiles. The CCK8 cytotoxicity assay and live/dead cell staining demonstrated that BMSCs survived and proliferated on the composite scaffold under both low-glucose and high-glucose conditions. Micro-CT and histological investigation demonstrated that β-E/PLGA composite scaffolds promoted new bone growth in the skull defect region of diabetic rats.Conclusion: Overall, these findings suggest that the β-E/PLGA composite scaffolds promote the healing of bone defects in diabetic rats. The combination of β-ecdysone and tissue-engineered scaffolds presents a promising approach for treating diabetes-related bone defects.
研究领域:
生物医学工程
·
内分泌学
·
组织工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Innovative Optical Health Sciences
·
2023
·
IF 2.5
Changqiang Xie,Yan Wang,Zhenzhen Cai,Jianghai Du,Zhengyu Chen,Junjie Wang,Xingzhou Peng
Monomethyl auristatin E (MMAE) is a derivative of the marine peptide Dolastatin 10, which has therapeutic effects against various cancers according to its antimitotic activity in multiple clinical trials. The antibody drug conjugate (ADC) of MMAE is currently used in clinical practice. However, the safety issues of MMAE-based ADC, such as high drug toxicity and poor bioavailability, still exist when using it for anticancer therapy. A sustained release of drug delivery approach should be used to reduce toxicity and achieve sufficient anticancer effects. Herein, PLGA-b-PEG 2 0 0 0 with excellent biocompatibility and slow degradation ability was adopted to construct MMAE-loaded nanoparticles for safe and effective chemotherapy. The sustained release effect and the immunogenic cell death (ICD) effect of PLGA-MMAE nanoparticles were assessed by in vitro experiments. The PLGA-MMAE nanoparticles effectively accumulated in the tumor through the enhanced permeability and retention (EPR) effect, inducing cell apoptosis and causing a certain degree of immune response. The sustained drug release of PLGA-MMAE improved the bioavailability and effectively reduced the toxicity and development of the tumor compared to the effect of free MMAE or ADC. Overall, this study provides a safe and effective chemotherapeutic approach, as well as a simple and effective synthetic process for MMAE-based nanoparticles, improving their therapeutic efficacy and safety.
研究领域:
药学
·
肿瘤学
·
生物材料学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）