Asian Journal of Pharmaceutical Sciences
·
2021
·
IF 6.598
Wei Tang,Yi Yang,Ling Yang,Mei Tang,Ying Chen,Chong Li
Targeted delivery of therapeutics for spinal cord injury (SCI) has been a long-term challenge due to the complexity of the pathological procession. Macrophage, as an immune cell, can selectively accumulate at the trauma site after SCI. This intrinsic targeting, coupled with good immune-escaping capacity makes macrophages an ideal source of biomimetic delivery carrier for SCI. Worth mentioning, macrophages have multiple polarization states, which may not be ignored when designing macrophage-based delivery systems. Herein, we fabricated macrophage membrane-camouflaged liposomes (RM-LIPs) and evaluated their abilities to extend drug circulation time and target the injured spinal cord. Specially, we detected the expression levels of the two main targeted receptors Mac-1 and integrin α4 in three macrophage subtypes, including unactivated (M0) macrophages, classically activated (M1) macrophages and alternatively activated (M2) macrophages, and compared targeting of these macrophage membrane-coated nanoparticles for SCI. The macrophage membrane camouflage decreased cellular uptake of liposomes in RAW264.7 immune cells and strengthened binding of the nanoparticle to the damaged endothelial cells in vitro . RM-LIPs can prolong drug circulation time and actively accumulate at the trauma site of the spinal cord in vivo . Besides, RM-LIPs loaded with minocycline (RM-LIP/MC) showed a comprehensive therapeutic effect on SCI mice, and the anti-pyroptosis was found to be a novel mechanism of RM-LIP/MC treatment of SCI. Moreover, the levels of Mac-1 and integrin α4 in macrophages and the targeting of RM-LIP for SCI were found to be independent of macrophage polarization states. Our study provided a biomimetic strategy via the biological properties of macrophages for SCI targeting and treatment.
研究领域:
药理学
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神经科学
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生物医学工程
·
免疫学
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产品关联
DOI
PubMed
高影响因子
Energy & Environmental Materials
·
2022
·
IF 13.443
Ling Yu,Yubin Liang,Lei Gao,Peipei Chen,Zhiqiang Yu,Minzhou Zhang,Aleksander Hinek,Shuai Mao
Myocardial damage resulting from acute myocardial infarction often leads to progressive heart failure and sudden death, highlighting the urgent clinical need for effective therapies. Recently, tanshinone IIA has been identified as a promising therapeutic agent for myocardial infarction. However, efficient delivery remains a major issue that limits clinical translation. To address this problem, an injectable thermosensitive poly (lactic acid-co-glycolic acid)-block-poly (ethylene glycol)-block-poly (lactic acid-co-glycolic acid) gel (PLGA-PEG-PLGA) system encapsulating tanshinone IIA-loaded reactive oxygen species-sensitive microspheres (Gel−MS/tanshinone IIA) has been designed and synthesized in this study. The thermosensitive hydrogel exhibits good mechanical properties after reaching body temperature. Microspheres initially immobilized by the gel exhibit excellent reactive oxygen species-triggered release properties in a high-reactive oxygen species environment after myocardial infarction onset. As a result, encapsulated tanshinone IIA is effectively released into the infarcted myocardium, where it exerts local anti-pyroptotic and anti-inflammatory effects. Importantly, the combined advantages of this technique contribute to the mitigation of left ventricular remodeling and the restoration of cardiac function following tanshinone IIA. Therefore, this novel, precision-guided intra-tissue therapeutic system allows for customized local release of tanshinone IIA, presenting a promising alternative treatment strategy aimed at inducing beneficial ventricular remodeling in the post-infarct heart.
研究领域:
药学
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生物医学工程
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心脏病学
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产品关联
DOI
高影响因子
Acta Pharmaceutica Sinica B
·
2024
·
IF 14.7
Xueming Xu,Yuanfeng Han,Jiali Deng,Shengfeng Wang,Shijie Zhuo,Kai Zhao,Wenhu Zhou
Drug repurposing offers a valuable strategy for identifying new therapeutic applications for existing drugs. Recently, disulfiram (DSF), a drug primarily used for alcohol addiction treatment, has emerged as a potential treatment for inflammatory diseases by inhibiting pyroptosis, a form of programmed cell death. The therapeutic activity of DSF can be further enhanced by the presence of Cu 2+ , although the underlying mechanism of this enhancement remains unclear. In this study, we investigated the mechanistic basis of Cu 2+ -induced enhancement and discovered that it is attributed to the formation of a novel copper ethylthiocarbamate (CuET) complex. CuET exhibited significantly stronger anti-pyroptotic activity compared to DSF and employed a distinct mechanism of action. However, despite its potent activity, CuET suffered from poor solubility and limited permeability, as revealed by our druggability studies. To overcome these intrinsic limitations, we developed a scalable method to prepare CuET nanocrystals (CuET NCs) using a metal coordination-driven self-assembly approach. Pharmacokinetic studies demonstrated that CuET NCs exhibited a 6-fold improvement in bioavailability. Notably, CuET NCs exhibited high biodistribution in the intestine, suggesting their potential application for the treatment of inflammatory bowel diseases (IBDs). To evaluate their therapeutic efficacy in vivo , we employed a murine model of DSS-induced colitis and observed that CuET NCs effectively attenuated inflammation and ameliorated colitis symptoms. Our findings highlight the discovery of CuET as a potent anti-pyroptotic agent, and the development of CuET NCs represents a novel approach to enhance the druggability of CuET.
研究领域:
药理学
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纳米技术
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炎症
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胃肠病学
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产品关联
DOI
PubMed
高影响因子
Journal of Extracellular Vesicles
·
2024
·Vol. 13
·期 12
·e70028
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IF 15.5
Qimeng Liu,Tianliang Ma,Zheyu Zhang,Jiangyu Nan,Guanzhi Liu,Yute Yang,Yihe Hu,Jie Xie
The development of strategies for the prevention and treatment of aseptic loosening of prostheses stands as a critical area of global research interest. The pyroptosis of local macrophages triggered by wear particles plays a pivotal role in the onset of periprosthetic osteolysis and subsequent loosening. Extracellular vesicles, carrying the surface components and regulatory molecules of their parent cells, embody the cellular characteristics and biological functions of these progenitors. In a pioneering approach to precisely inhibit the pyroptosis of local macrophages induced by wear particles, we have engineered fused extracellular vesicles (fEV) from M 2 macrophages and human umbilical cord mesenchymal stem cells. These fEV boast the distinctive capability for targeted transport and immune evasion, collectively enhancing the anti‐pyroptosis effect of the therapeutic extracellular vesicles. Our research demonstrates the targeted, significant preventive and therapeutic potential of fEVs against periprosthetic osteolysis prompted by wear particles, highlighting its crucial clinical significance and application prospects. These findings suggest that extracellular vesicle fusion technology heralds a novel paradigm in the design and development of targeted extracellular vesicle‐based drug delivery systems.
研究领域:
骨科
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细胞生物学
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再生医学
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药物递送系统
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DOI
PubMed
高影响因子
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