PLoS One
·
2026
·Vol. 21
·期 1
·e0339776
·
IF 2.6
Keming Ying,Han Xue,Shenheng Du,Xin Wang,Xiaoyun Lei
N1,N12-diacetylspermine (DiAcSpm), a promising biomarker for cancer diagnosis, presents significant quantification challenges due to the structural homology within the polyamine family. To address this issue, we engineered a molecularly imprinted monolithic (MIM) column functionalized with biomimetic phosphorylcholine (PC) as functional monomer for the selective recognition of DiAcSpm in human urine. The zwitterionic polymer was synthesized via thermally initiated polymerization, with its morphology and pore architecture characterized through scanning electron microscopy (SEM) and brunauer-emmett-teller (BET) analysis. After optimizing capillary microextraction (CME) parameters, the MIM demonstrated a broad linear response (10–500 μM), a low detection limit (3.3 μM, S/N = 3), and high recoveries (76.8–91.2%) when coupled with HPLC-UV analysis. The biomimetic PC-based recognition significantly improved selectivity against key structural analogs, such as spermine, in complex biological matrices. This study underscores the potential of zwitterionic-based MIMs as a robust and efficient platform for the sensitive and selective monitoring of acetylated polyamines in clinical settings.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Oral Microbiology
·
2026
·
IF 5.5
Xu Chen,Xiaoming Zhu,Yiran Liu,Lu Ma,Lu Li,Jitong Dong,Zirui Li,Tianyao Wang,Juan Zhang,Yan Xu
Background Chronic intestinal inflammation is a hallmark of inflammatory bowel disease (IBD). Studies suggest that salivary bacteria associated with periodontitis may exacerbate colitis, but the specific contributory microbes and mechanisms remain unclear.Patients and methods We analyzed stool samples from 28 IBD patients and 21 controls. Bacterial DNA was extracted and quantified using qPCR targeting Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans). In a murine model, C57BL/6 mice received DSS followed by daily oral gavage with A. actinomycetemcomitans. Disease activity, histopathology and the gut microbiota were evaluated.Results Oral administration of A. actinomycetemcomitans exacerbated inflammatory symptoms in DSS-induced colitis. The bacterium was detectable in intestinal tissue transiently following high-dose oral administration during the inflammatory phase. Following high-dose gavage, bacterial DNA was transiently detectable in intestinal tissue during inflammation. This treatment was associated with reduced expression of the tight junction protein ZO-1 and mucin MUC-2, elevated inflammatory mediators, and altered gut microbial community structure, including an expansion of taxa associated with dysbiosis.Conclusion In a murine colitis model, A. actinomycetemcomitans exposure was associated with worsened disease severity, coinciding with impaired barrier integrity, heightened inflammation and gut microbiota alterations. These exploratory findings highlight the potential role for specific periodontal microbes in modulating intestinal inflammation and warrant further investigation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Tang Xiaolu,Li Quan,Yang Yue,Wu Meilin,Liu Qingqing,Mo Zhihong
Protein-rich foods release biogenic amines (BAs) during prolonged storage, and these compounds serve as key biomarkers of food spoilage. Current separation-based methods for detecting BAs in food require sophisticated instrumentation and laborious sample pretreatment procedures. The array-sensing strategy, which mimics biological olfaction, provides a simple and rapid approach for the simultaneous detection of multiple BAs without the need for separation. Here, we constructed a multidimensional fluorescent sensor array using porphyrin-functionalized carbon dots (P-CDs) and their composites with metal ions (M-P-CDs), thereby incorporating the excitation wavelength as an additional signal dimension. This design reduces the number of physical sensors required while maintaining high discrimination capability, thereby overcoming a key limitation of conventional sensor arrays that depend solely on increasing the number of sensors. With the support of chemometric and machine learning methods, the sensor array successfully discriminated among ten BAs. We achieved quantitative detection of putrescine, histamine, and tyramine, determining their limits of detection (LODs) to be 2.37, 2.96, and 1.55 mg/L, respectively. The sensor array exhibited excellent stability (i.e., no significant fluorescence change over 30 days) and high selectivity against common interfering substances. Validation experiments on milk samples demonstrated the array’s ability to reliably discriminate specimens at different spoilage stages. This work establishes a novel multidimensional array-sensing strategy for detecting BAs, an approach that holds great potential for food safety applications. Graphical
✓ 已验证
产品关联
DOI
高影响因子
BIOMATERIALS
·
2026
·
IF 13.6
Zheng Deng,Xirui Wu,Tianhao Huang,Huiyuan Chen,Zhuochao Wu,Li Liu,Yuqian Liu,Chunjie Wang,Zijian Xiong,Zhuang Liu,Guangbao Yang
Intracellular polyamine metabolic homeostasis is closely linked to therapeutic outcomes in cancer. However, their intrinsic antitumor mechanisms have not been fully clarified. Herein, we demonstrate that the catabolism of spermine (Spm) and spermidine (Spd) mediated by polyamine oxidase directly generates two potent cytotoxic metabolites, namely acrolein and hydrogen peroxide. These metabolites act synergistically to trigger a marked elevation in intracellular reactive oxygen species (ROS), which in turn activate the caspase-1/GSDMD and caspase-3/GSDME signaling pathways, ultimately driving tumor cells into pyroptosis. Based on these findings, we develop a phenylboronic acid-functionalized sodium alginate-based hydrogel controlled-release system (Alg-PBA/Spd). This platform achieves sustained Spd release through coordination interactions and markedly inhibits tumor growth by inducing pyroptosis. Further studies demonstrate that the Alg-PBA/Spd hydrogel synergizes with radiotherapy (RT) to enhance radiosensitivity in an orthotopic breast cancer model and inhibit pulmonary metastasis. Moreover, this hydrogel enables co-delivery of αPD-L1 with sustained release, which significantly improves the response rate of immune checkpoint blockade therapy by inducing pyroptosis and remodeling the tumor immune microenvironment. Overall, this study not only elucidates a previously unrecognized mechanism underlying polyamine metabolism-driven pyroptosis but also offers a versatile platform to enhance the efficacy of RT and immunotherapy.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Wenyang Zhang,Da-Wen Sun,Ji Ma,Anjun Qin,Ben Zhong Tang
A ratiometric fluorescent tag based on dual-emissive hydrophobic carbon dots (H-CDs) with well volatile base nitrogens (VBNs)-response was fabricated, offering the in-situ, real-time, and visual evaluation of seafood freshness. The presented H-CDs aggregates exhibited a sensitive response to VBNs, with a limit of detection of 7 μM and 137 ppb for spermine and ammonia hydroxide, respectively. Subsequently, a ratiometric tag was successfully fabricated by depositing dual-emissive CDs on cotton paper. Upon the treatment with ammonia vapour, the presented tag exhibited highly recognizable colour variations from red to blue under UV light. In addition, the cytotoxicity was explored by CCK8 assay, and the results proved the nontoxicity of the presented H-CDs. To our knowledge, this is the first ratiometric tag based on dual-emissive CDs with aggregation-induced emission properties for recognition of VBNs and seafood freshness in a real-time and visual manner.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 415
·期 18
·4265-4275
·
IF 4.478
Wang Tingting,Chen Yihui,Hou Chunyan,Qiao Xiaoqiang
A novel type of PEG-modified halloysite was prepared and used as a hydrophilic interaction and cation exchange mixed-mode sorbent for solid-phase extraction of biogenic amines in fish samples. The eluates were analyzed by high-performance liquid chromatography-ultraviolet detection after the derivatization with benzoyl chloride. The developed sorbent was characterized by scanning electron microscopy, infrared spectroscopy, X-ray diffraction, zeta potential analyzer, and thermo-gravimetric analysis. After the optimization of various parameters influencing the extraction efficiency, the PEG-modified halloysite-based SPE method was evaluated. The adsorption capacities of putrescine, spermine, phenethylamine, and histamine were as high as 9.3, 8.5, 5.7, and 5.6 mg g −1 , respectively. Satisfactory reproducibility of sorbent preparation was obtained with within-batch and batch-to-batch relative standard deviations (RSDs) lower than 3.9% and 8.6%, respectively. The biogenic amine spiking recoveries in fish samples ranged from 84.3 to 105.5% with good RSDs lower than 7.8%. Intra-day and inter-day precision, expressed as RSDs, were better than 8.8%. The limits of detection of histamine, putrescine, phenethylamine, and spermine were 9.4, 1.9, 0.5, and 0.9 μg L −1 , respectively. This work provides a new hydrophilic interaction and cation exchange mixed-mode sorbent and is successfully applied to the extraction of trace biogenic amines from fish samples. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMATERIALS
·
2022
·
IF 15.304
Guoqing Wang,Xinyue Meng,Peiyan Wang,Xinping Wang,Gaoli Liu,Dong-An Wang,Changjiang Fan
Uncontrolled hemorrhage caused by trauma to internal organs or major arteries poses critical threats to lives. However, rapid hemostasis followed by tissue repair remains an intractable challenge in surgery owing to the lack of ideal internal-use adhesives that can achieve fast and robust wet adhesion and accelerate wound healing. Herein, we develop a robust hemostatic bioadhesive (CAGA) from novel highly-branched aminoethyl gelatin with end-grafted abundant catechol (Gel-AE-Ca). The unique chemical structure of Gel-AE-Ca makes CAGA capable of gelling on wet tissues via synergetic cross-linking of catechol-Fe 3+ chelation and horseradish peroxidase (HRP)/H 2 O 2 -triggered covalent bonds using a dual-channel needle, meeting the key demands of internal medical applications (e.g., instant and strong wet adhesion, injectability , biocompatibility, self-healing, stretching flexibility, infection resistance, and proper biodegradability). It exhibits rapid gelation within 10 s and robust wet tissue adhesion up to 115.0 ± 13.1 kPa of shear strength and 245.0 ± 33.8 mm Hg of sealing strength. In vivo trials demonstrate that CAGA can not only effectively seal anastomosis of the carotid artery, but achieve rapid hemostasis on the sites of liver incisions and penetrating cardiac wounds within 10 s. The wound closure by CAGA and its timely biodegradation promote wound healing of the vital organs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2023
·
IF 4
Si Lin,Hou Juying,Lv Wei,Hou Qin,Xu Zhixiang,Ai Shiyun
In this paper, lignocellulose components were separated under mild conditions to achieve hierarchical utilization of biomass. Cellulose was retained in cellulose pulp with highly crystalline structure, and lignin powder was recovered, which offered a possibility for the high-value utilization of lignocellulosic biomass. The extracted lignin (EL) was carbonized and activated to prepare lignin-based porous carbon microspheres (LPCMs) and further used as a substrate to interact with fluorescein-5-isothiocyanate (5-FITC) for the detection of biogenic amines (BAs). The fluorescence of 5-FITC was found to be quenched in the presence of LPCMs. And then, upon addition of BAs, 5-FITC was released from the surface of LPCMs, which resulted in the fluorescence recovery of 5-FITC. Thus, a novel “turn off–on” fluorescent probe was constructed for sensitive and visual detection of BAs. Meanwhile, the retained cellulose skeleton structure was used to prepare a smart identification label for real-time and visual evaluation of the freshness of pork and shrimp. This work realized the improvement of comprehensive utilization rate of lignocellulose and developed a rapid, efficient, and sustainable method which combined natural lignocellulose materials with green analytical technology for visually evaluating food quality.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2022
·
IF 4.601
Xu Xu,Jiaxin Gao,Di Cao,Xiang Li,Xin Zhao,Shuang Yue,Lei Zhang
In this paper, the novel 3D N-doped magnetic porous carbon spheres (3D N-MPCSs) was constructed via a simple template-free and self-doping method, followed by a direct carbonization of polymer with Fe 3+ for simultaneous activation and magnetization. For the first time, the designed 3D N-MPCSs was used as multifunctional (for extraction and magnetic separation) adsorbents for microwave-assisted derivatization and magnetic solid phase extraction, which exhibited excellent extraction ability for its large surface area, mesoporous structure, spherical morphology, and incorporation of N/O heteroatoms. Moreover, when the microwave-assisted derivatization was combined with the magnetic solid phase extraction, the extraction, derivatization and concentration was completed simultaneously within 135 s. Furthermore, this method has a low detection limit (0.059–0.073 ng mL −1 ) and high enhancement factors (333 < EFs < 382) for trace biogenic amine (BAs). The recoveries were between 92.3 and 108.8% with relative standard deviations less than 5.9%. Overall, a simple, rapid, efficient and sensitive method for the analysis of BAs in food samples was developed, which provided the basis for routine detection of food safety.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Yujuan Qin,Pengcheng Huang,Fang-Ying Wu
With food safety problems abounding, it is essential to explore some efficient and effective methods for monitoring food quality. To this end, we have developed a histamine-responsive carbon dots (CDs)-based sensing system for visual monitoring of food spoilage. In this system, the aldehyde group on the surface of CDs serves as the recognition sites to combine with the amino group on histamine to form a Schiff base that effectively enhances the fluorescence. On the other hand, 1-aminoanthraquinone (ANQ) was introduced as a reference signal to endow the fluorescent probe with self-calibrating capacity. As the histamine concentration increases, linear ratiometric response was obtained accompanied with a distinguishable fluorescence color change from red to blue. Besides, test strips-based smartphone visual assays were successfully used to evaluate and monitor the histamine levels in fish samples. Our proposed sensing strategy has been demonstrated to be efficient and robust along with great potential for real-time visual monitoring of food spoilage.
✓ 已验证
产品关联
DOI
高影响因子
Pharmaceutics
·
2022
·Vol. 14
·期 3
·510
·
IF 6.525
Qianqian Zhang,Jianwei Bao,Tijie Duan,Minxing Hu,Yuting He,Junwei Wang,Rongfeng Hu,Jihui Tang
Lung cancer is the second-most common cancer and has the highest mortality among all cancer types. Nanoparticle (NP) drug delivery systems have been used to improve the therapeutic effectiveness of lung cancer, but rapid clearance and poor targeting limit their clinical utility. Here, we developed a nanomicelle-microsphere composite, in which doxorubicin (DOX) was loaded with spermine (Spm) modified poly (ethylene glycol)-poly(ε-caprolactone) (PEG-PCL) micelles, and then the nanomicelles were noncovalently adsorbed on the surface of poly (lactic-co-glycolic acid) (PLGA) microspheres. The attachment was confirmed by scanning electron microscopy and confocal microscopy. In vitro cell experiments, MTT assays and intracellular uptake assays were used to demonstrate the cytotoxicity and the cellular uptake of micelles in A549 cells. In vivo biodistribution studies were conducted, an orthotopic lung cancer implantation model based on C57BL/6 mice was established, and then real-time fluorescence imaging analysis was used to study the targeted efficacy of the complex. A nanomicelle-microsphere composite was successively constructed. Moreover, Spm-modified micelles significantly enhanced cytotoxicity and displayed more efficient cellular uptake. Notably, an orthotopic lung cancer implantation model based on C57BL/6 mice was also successively established, and in vivo biodistribution studies confirmed that the complex greatly improved the distribution of DOX in the lungs and displayed notable tumor targeting. These results suggested that the nanomicelle-microsphere composite has potential application prospects in the targeted treatment of lung cancer.Keywords:micelles;microsphere;polyamine transport system;targeted drug delivery system;lung cancer
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Lancheng Wang,Mingjie Xu,Huimin Zhou,Kun Yan,Shiqi Duan,Dandan Xue,Youmei Wang,Bin Di,Chi Hu
The target of typical PCR analysis is restricted to nucleic acids. To this end, we report here a novel strategy to simultaneously detect genetic and metabolic markers using commercial PCR kits with cucurbit[8]urils (CB[8]) implemented to manipulate the activity of Taq DNA polymerase. CB[8] binds with the nonionic surfactants and displaces them from the polymerase surface, resulting in decreased enzyme activity. Meanwhile, the inhibited enzyme can be reversibly activated when spermine, the downstream metabolite of ornithine decarboxylase (ODC), is present in the sample, which competitively binds to CB[8] and recovers polymerase activity. CB[8] was implemented in conventional PCR kits not only to reduce false-positive results but also to extend the detection range of PCR technology. With this novel method to detect ODC in cell lysates containing both the nucleotides and intracellular metabolites, positive results were only observed in highly active HEK 293T cells, whereas silent cells treated with ODC inhibitor showed negative readouts, therefore providing a simple but elegant dual-modality PCR method for precision diagnosis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）