MICROCHIMICA ACTA
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2025
·Vol. 192
·期 2
·1-10
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IF 5.3
Ke Wenrui,Kuang Guochen,Gu Chuangqi,Wang Junhao,Jiang Xiao,Zhu Rongjiao,Wang Haiyuan,Zhang Zhen
A Cr-doped VO 2 nanobelt (Cr/VO 2 ) with remarkable peroxidase-like activity was synthesized and coupled with uricase to catalyze the cascade reaction for detection of uric acid. Notably, the affinity of Cr/VO 2 for 3,3',5,5'-tetramethylbenzidine dihydrochloride hydrate (TMB) and hydrogen peroxide (H 2 O 2 ) is tenfold and 20-fold higher, respectively, than that of horseradish peroxidase (HRP). The Cr/VO 2 exhibits highly reactive and stable peroxidase activity at temperatures of 20-60 ℃. Thus, the reaction catalyzed by Cr/VO 2 can be carried out at room temperature, greatly simplifying the testing process. This enzyme cascade nanozyme based colorimetric assay enables the selective and simple detection of uric acid within 30 min with a detection limit of only 0.34 μM, and has an observable potential in clinical applications. Graphical abstract
研究领域:
生物化学
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医学诊断
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纳米技术
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DOI
PubMed
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2019
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IF 4.959
Xiaxia Du,Rong Xiao,Hualin Fu,Zhixiang Yuan,Wei Zhang,Lizi Yin,Changliang He,Chuanfeng Li,Jiewen Zhou,Guangqing Liu,Gang Shu,Zongyan Chen
Novel duck reovirus (NDRV) disease is a serious infectious disease for poultry, for which no effective therapy has been established. Therefore, development of novel antivirals against NDRV is urgently needed. In present study, we developed a complex wherein hypericin (HY), which shows broad-spectrum antiviral activity, was loaded onto graphene oxide (GO), which has a high drug-loading capacity and low cytotoxicity. The antiviral activity of the complex (GO/HY) was studied in DF-1 cells and in ducklings infected with the NDRV TH11 strain. GO/HY showed a dose-dependent inhibition of NDRV replication, which may be attributed to direct virus inactivation or inhibition of virus attachment. Western blotting and indirect immunofluorescence assay (IFA) showed markedly suppressed protein expression in GO/HY-treated NDRV-infected DF-1 cells. Moreover, GO/HY prolonged the survival time of the ducklings by reducing pathological lesions caused by the infection and inhibiting viral replication in the liver and lungs. These results suggest that GO/HY has antiviral activity against NDRV both in vitro and in vivo.
研究领域:
兽医学
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病毒学
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纳米生物学
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DOI
PubMed
高影响因子
Scientific Reports
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2014
·Vol. 4
·期 1
·1-5
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IF 5.078
Zhu Qing,Sun Yuehua,Zhu Jie,Fang Tian,Zhang Wei,Li Jun-Xu
Sinomenine is a principal ingredient of traditional Chinese medicine, Sinomenium Acutum , which has been reported to have various pharmacological effects including anti-rheumatism and immunomodulation. This study examined the effects of sinomenine in rats that received chronic constriction injury (CCI), a model of peripheral neuropathic pain. CCI injury on the right sciatic nerve led to long-lasting mechanical hyperalgesia. Acute sinomenine treatment (10–40 mg/kg, i.p.) significantly and dose-dependently reversed mechanical hyperalgesia. In addition, the antinociceptive effects of sinomenine remained stable during repeated daily treatment for up to 2 weeks. Although sinomenine did not alter the duration of immobility in the forced swimming test in healthy animals, it dose-dependently reversed the increased immobility time in rats receiving CCI, suggesting that sinomenine attenuated chronic pain-induced depressive-like behavior. The antinociceptive effects of sinomenine were blocked by the GABAa receptor antagonist bicuculine. The doses of sinomenine studied here did not significantly alter the spontaneous locomotor activity. Together, these results suggested that sinomenine exerts significant antinociceptive effects for neuropathic pain via GABAa-mediated mechanism, which suggests that sinomenine may be useful for the management of chronic painful conditions such as neuropathic pain.
研究领域:
药理学
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疼痛研究
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神经科学
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DOI
PubMed
高影响因子
Cell Death Discovery
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2022
·Vol. 8
·期 1
·1-13
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IF 7.109
Lian Ni,Chen Yujie,Chen Sihan,Xiao Ta,Song Changjun,Ke Yangying,Wei Xuecui,Gong Chunyan,Yu Hui,Gu Heng,Chen Qing,Li Min,Chen Xu
Keratinocyte necroptosis (with proinflammatory characteristic) is required for epidermal damage in contact hypersensitivity (CHS). In DNCB-induced CHS mice model, we observed the aggravated keratinocyte death and increased phosphorylation level of MLKL, RIPK3 and RIPK1. However, CHS skin lesion did not present in keratinocyte-specific Mlkl knockout mice. We validated that MLKL-mediated keratinocyte necroptosis is required for epidermal damage in response to immune microenvironment in CHS. Moreover, MLKL-mediated necroptosis deficiency or inhibition resulted in blocking recruitment and activation of inflammatory cells in CHS via reducing HMGB1 release in keratinocytes. This study suggests that MLKL-mediated keratinocyte necroptosis functions as a self-amplified actor in inflammatory responses and could be considered as an effective therapeutic target. It proposes an innovative prospective that inhibiting keratinocyte necroptosis can prevent the development of epidermal damage in CHS.
研究领域:
免疫学
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细胞生物学
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皮肤病学
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DOI
PubMed
高影响因子
Scientific Reports
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2024
·Vol. 14
·期 1
·1-12
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IF 3.8
Shi Qianwen,Wang Shuhui,Wang Gege,Wang Tao,Du Kaili,Gao Cairong,Guo Xiangjie,Fu Shanlin,Yun Keming
Immunoglobulin E (IgE)-mediated immediate hypersensitivity reactions are the most concerning adverse events after penicillin antibiotics (PENs) administration because of their rapid progression and potential for fatal outcome. However, the diagnosis of allergic death is a forensic challenge because it mainly depends on nonspecific characteristic morphological changes, as well as exclusion and circumstantial evidence. In this study, an untargeted metabolomics approach based on liquid chromatography-mass spectrometry (LC-MS) was used to screen potential forensic biomarkers of fatal anaphylactic shock induced by four PENs (benzylpenicillin (BP), amoxicillin (AMX), oxacillin (OXA), and mezlocillin (MEZ)), and analyzed the metabolites, metabolic pathway and the mechanism which were closely related to the allergic reactions. The metabolomics results discovered that a total of 24 different metabolites in all four anaphylactic death (AD) groups, seven of which were common metabolites. A biomarker model consisting of six common metabolites (linoleic acid, prostaglandin D2, lysophosphatidylcholine (18:0), N-acetylhistamine, citric acid and indolelactic acid) AUC value of Receiver Operating Characteristic (ROC) curve was 0.978. Metabolism pathway analysis revealed that the pathogenesis of PENs-induced AD is closely related to linoleic acid metabolism. Our results revealed that the metabolomic profiling has potential in PENs-induced AD post-mortem diagnosis and metabolic mechanism investigations.
研究领域:
药理学
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毒理学
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法医学
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代谢组学
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DOI
PubMed
高影响因子
Biomaterials Advances
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2024
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IF 5.5
Rongli Chen,Ergang Liu,Yuefei Fang,Nan Gao,Meng Zhang,Xiaoru Zhang,Wanying Chen,Chuxin Liang,Yu Zhang,Yongzhuo Huang
The marketed paclitaxel (PTX) formulation Taxol relies on the application of Cremophor EL as a solubilizer. The major drawback of Taxol is its hypersensitivity reactions and a pretreatment of anti-allergic drugs is a necessity. Therefore, developing an efficient and safe delivery vehicle is a solution to increase PTX treatment outcomes with minimal adverse effects. In this work, we prepared the amphiphilic peptides (termed AmP) from soybean proteins using a facile two-step method. AmP could efficiently solubilize PTX by self-assembling into mixed micelles with D-α-tocopherol polyethylene glycol succinate (TPGS), a common pharmaceutical expedient (PTX@TPGS-AmP). The intravenously administrated PTX@TPGS-AmP exhibited a slow clearance (0.24 mL·(min·kg) −1 ) and an enhanced AUC (41.4 μg.h/mL), manifesting a 3.6-fold increase compared to Taxol. In a murine 4T1 tumor model, PTX@TPGS-AmP displayed a superior antitumor effect o v er Taxol. Importantly, safety assessment showed a high biocompatibility of AmP and an i.v. dose up to 2500 mg/kg led to no observable abnormalities in the mice. In summary, the AmP presents a new green and easily-prepared amphiphilic biomaterial, with promising potential as a pharmaceutical excipient for drug delivery.
研究领域:
药学
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肿瘤学
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药物递送系统
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生物技术
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-17
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IF 9.429
Lin Yuejun,Zhou Hui-chao,Chen Ningbo,Ren Yaguang,Gao Rongkang,Li Qiaojia,Deng Yiwen,Han Xuejiao,Zhang Xiaoran,Xiang Andy Peng,Guo Bing,Liu Chengbo,Ren Jie
Background Therapy with genetically modified mesenchymal stem cells (MSCs) has clinical translation promise. Optimizing the targeting migratory ability of MSCs relies on accurate imaging of the distribution and extravasation kinetics of MSCs, and the corresponding imaging results could be used to predict therapeutic outcomes and guide the optimization of the treatment program. Among the different imaging modalities, second near-infrared (NIR-II) optical-resolution photoacoustic microscopy (OR-PAM) has merits, including a fine resolution, a deep penetration, a high sensitivity, and a large signal-to-background ratio. It would be an ideal candidate for precise monitoring of MSCs, although it has not been tested for this purpose so far. Results Penetrating peptide-decorated conjugated polymer nanoparticles (TAT-CPNPs) with strong NIR-II absorbance were used to label chemokine-receptor genetically modified MSCs, which were subsequently evaluated under intravital NIR-II OR-PAM regarding their targeting migratory ability. Based on the upregulation of chemokine (C-X-C motif) ligand 10 in the inflamed ears of contact hypersensitivity mice, MSCs with overexpression of corresponding receptor, chemokine (C-X-C motif) receptor 3 (Cxcr3) were successfully generated (MSC Cxcr3 ). TAT-CPNPs labeling enabled NIR-II photoacoustic imaging to discern MSC Cxcr3 covered by 1.2 cm of chicken breast tissue. Longitudinal OR-PAM imaging revealed enhanced inflammation-targeting migration of MSC Cxcr3 over time attributed to Cxcr3 gene modification, which was further validated by histological analysis. Conclusions TAT-CPNPs-assisted NIR-II PA imaging is promising for monitoring distribution and extravasation kinetics of MSCs, which would greatly facilitate optimizing MSC-based therapy. Graphical Abstract
研究领域:
干细胞生物学
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成像科学
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分子生物学
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治疗学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）