EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
·
2021
·Vol. 49
·期 3
·847-860
·
IF 9.236
Liu Jing-Jing,Wang Zun,Nie Li-Ming,Zhu Yuan-Yuan,Li Ge,Lin Lin-Ling,Chen Min,Zhang Guo-Jun
Purpose Obtaining tumour-free margins is critical for avoiding re-excision and reducing local recurrence following breast-conserving surgery; however, it remains challenging. Imaging-guided surgery provides precise detection of residual lesions and assists surgical resection. Herein, we described water-soluble melanin nanoparticles (MNPs) conjugated with cyclic Arg-Gly-Asp (cRGD) peptides for breast cancer photoacoustic imaging (PAI) and surgical navigation. Methods The cRGD-MNPs were synthesised and characterized for morphology, photoacoustic characteristics and stability. Tumour targeting and toxicity of cRGD-MNPs were determined by using either breast cancer cells, MDA-MB-231 tumour-bearing mice or the FVB/N-Tg (MMTV-PyVT) 634Mul/J mice model. PAI was used to locate the tumour and guide surgical resection in MDA-MB-231 tumour-bearing mice. Results The cRGD-MNPs exhibited excellent in vitro and in vivo tumour targeting with low toxicity. Intravenous administration of cRGD-MNPs to MDA-MB-231 tumour-bearing mice showed an approximately 2.1-fold enhancement in photoacoustic (PA) intensity at 2 h, and the ratio of the PA intensity at the tumour site to that in the surrounding normal tissue was 3.2 ± 0.1, which was higher than that using MNPs (1.7 ± 0.3). Similarly, the PA signal in the spontaneous breast cancer increased ~ 2.5-fold at 2 h post-injection of cRGD-MNPs in MMTV-PyVT transgenic mice. Preoperative PAI assessed tumour volume and offered three-dimensional (3D) reconstruction images for accurate surgical planning. Surgical resection following real-time PAI showed high consistency with histopathological analysis. Conclusion These results highlight that cRGD-MNP-mediated PAI provide a powerful tool for breast cancer imaging and precise tumour resection. cRGD-MNPs with fine PA properties have great potential for clinical translation.
研究领域:
医学影像
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癌症手术
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纳米技术
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生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2023
·
IF 3.4
Yang Chang,Yafei Xia,Xiaojun Liu,Putian Yu,Furong Fan,Yangyang Shi,Shixin Yan,Shu Yan
Background Cholestasis is a commonly occurring disorder induced by impaired bile flow, for which there is no effective treatment so far. Qingre Lidan decoction (QRLD) is a clinically used herbal compound for the long-term treatment of bile circulation disorders arising from inflammation and obstruction in the gallbladder and bile ducts. The objective of this study was to investigate the protective effect of QRLD on cholestatic liver injury and its possible mechanism. Methods α-Naphthyl isothiocyanate (ANIT) was used to induce cholestatic liver injury in rats. Liver histopathology and serum biochemical markers were used to assess QRLD's protective impact. The possible biomarkers and mechanism of the therapeutic benefits of QRLD were investigated using a UHPLC-based Q-Exactive Orbitrap MS / MS untargeted serum metabolomics technique together with 16 S rRNA microbiota profiling. Afterwards, using RT-qPCR as well as Western Blot techniques, the expression of pertinent indicators was determined. Results The intervention effect of QRLD was stronger at medium and high dosages than at low doses, and it dramatically decreased the levels of serum biochemical markers in cholestatic rats reflecting alterations in liver function and relieving ANIT-induced abnormalities in the liver's histopathology. Serum metabolomics showed that QRLD could affect the metabolic profile of cholestatic rats, mainly related to glycerophospholipid metabolism, taurine and hypotaurine metabolism, alanine, aspartate and glutamate metabolism, and histidine metabolic pathway. Additionally, analysis of 16 S rRNA gene sequencing indicated that QRLD could moderate ANIT-induced microbiota disorders, particularly Romboutsia, Bifidobacterium, Fusicatenibacter, Prevotella_9, Prevotellaceae_NK3B31_group and Prevotella_1. Other experimental results showed that QRLD significantly upregulated the mRNA and protein expression of PPARα, CYP7A1 and NTCP in the liver, inhibited the expression of p-IκBα, p-p65 and TNFα while increasing the anti-inflammatory factor IL-10, and downregulated the expression of MDA (a peroxidation product) and D -lactic acid (an intestinal barrier indicator) while increasing the expression of SOD and GSH. Conclusions QRLD can effectively regulate endogenous metabolites and microbiota disorders in cholestatic rats that are correlated with the attenuation of inflammation and oxidative stress.
研究领域:
药理学
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肝病学
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代谢组学
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微生物学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Hanhan Xie,Ji Yang,Tong Liu,Xinyue Zhang,Shan Zuo,Yingjie Gao,Xi Kuang,Tao Zhang
Lignin is dietary fiber from plant cell walls with multiple biological antioxidant and anti-inflammatory activities. However, whether lignin protects from ulcerative colitis (UC) and underlying mechanisms is unclear. Herein, UC mouse modeling was established with dextran sulfate sodium (DSS) and treatment with lignin for 1 week. Results showed that lignin inhibited the disease activity index (DAI), histological damage, and cell death in UC mice. We also found that lignin reversed the alterations of ferroptotic features in DSS-induced mice and ferroptotic cells, as evidenced by increased expression of GPX4 and 4-HNE and decreased transferrin expression, ameliorating the phenomenon of iron overload, GSH depletion, and ROS and MDA production. Furthermore, the increased expression of NRF2 was observed in IECs under lignin treatment. Also, the upstream regulatory molecule ERK of NRF2 was activated. Further research revealed that lignin can bind GPR37. Meanwhile, lignin was able to alleviate colitis by improving the composition of the intestinal flora in DSS mice and its effect was similar to that of 5-ASA. Taken together, these findings suggest that lignin protects against ferroptosis in UC by combining GPR37 and activating the ERK-NRF2-GPX4 signaling axis, which provides new ideas for clinical intervention in the treatment of UC.
研究领域:
胃肠病学
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药理学
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分子生物学
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免疫学
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产品关联
DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 33
·期 10
·e5120
·
IF 3.259
Dongdong Li,Luyao Wang,Ernesto Yagüe,Linlin Dai,Xiumei Zhao,Zibo Yang,Shuang Zhi,Yunhui Hu
An innovative ternary copper(II) complex, [Cu(Cl-PIP)(Tyr)Cl] n , has been synthesized and characterized using infrared spectroscopy, elemental analysis and single-crystal X-ray diffraction analysis. X-ray crystallography indicates that the Cu atom is five-coordinated in a square-pyramidal configuration. The unit forms a one-dimensional chain along the crystallographic c -axis. The complex was screened for cytotoxicity against a panel of eight human cancer cell lines, namely MDA-MB-231, CAL-51, K562, HeLa, SGC-7901, A549, MCF-7 and SMMC-7721. The best anticancer activity was obtained with triple-negative breast cancer CAL-51 and MDA-MB-231 cell lines, with IC 50 values in the range 0.035–0.10 μM, and this was better than using carboplatin. The complex inhibits proteasomal chymotrypsin-like activity, and docking studies reveal its interaction with 20S proteasome. In addition, the complex causes accumulation of ubiquitinated proteins, induces apoptosis and inhibits cell proliferation, indicating its great potential as a novel therapy for triple-negative breast cancer.
研究领域:
癌症研究
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化学
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药理学
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分子生物学
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细胞生物学
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产品关联
DOI
高影响因子
Small
·
2021
·Vol. 18
·期 3
·2104034
·
IF 13.281
Jiao Yang Lu,Wei Tao Huang,Kexuan Zhou,Xiaoli Zhao,Shuqing Yang,Liqiu Xia,Xuezhi Ding
Discovering new drugs and improving action mechanisms is a promising strategy to overcome chemotherapy ineffectiveness caused by cancer cell apoptosis resistance. Natural products (like cyclic lipopeptides, CLPs) are potential sources of nonapoptotic cell death inducers and can form diverse supramolecular structures, closely relating to their bioactivities. Herein, it is found for the first time that fatty chain is the key to maintain self-assembled form and antitumor activity of microbial-derived amphiphilic CLP bacillomycin Lb (B-Lb). Compared with B-Lb analogues assemblies without antitumor activity, B-Lb supramolecular self-assemblies (including nanomicelles, nanofibers, giant micrometer rods) can be generated in a multilevel and cross-scale manner and served as a methuosis-like cell death inducer triggered by cytoplasmic vacuolation through macropinocytosis in MDA-MB-231-Luc and MCF-7 cells and in vivo tumor-bearing mice. This study will promote constructing of customized CLP micro-/nanostructures with multipurposes and functions, and boost designing of new antitumor drugs as nonapoptotic cell death modulators based on structure–activity relationship.
研究领域:
药学
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生物技术
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癌症研究
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纳米技术
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分子生物学
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产品关联
DOI
PubMed
高影响因子
PHYTOMEDICINE
·
2022
·
IF 6.656
Hong Lu,Zhengyu Wu,Yijun Wang,Di Zhao,Biyun Zhang,Mei Hong
Background Triple-negative breast carcinomas (TNBCs) are a breast carcinoma with the most aggressive form, which is demonstrated as enhanced invasion and recurrence. Britannin is extracted mainly from the traditional Chinese herb Inula japonica Thunb, and few studies have focused on its effect on TNBC. Moreover, there is still no report concerning the role of Britannin in degrading the transcripts of Zinc finger E-box-binding homeobox 1 (ZEB1) proteins. Purpose To explore the potential effect of Britannin on invasion and stemness of TNBCs and its underlying mechanism. Methods Cellular activity was measured using MTT, and cell cycle was measured using flow cytometry (FCM). The effect of Britannin on the migrating and invading abilities of MDA-MB-231 and 4T1 cells were measured using the wound healing and transwell assays. The sizes and number of breast carcinoma cells were measured by tumor formation assay and in vitro limiting-dilution assay. CD44 expression in tumor spheroids was tested by immunofluorescence assay . Nextly, the expressions of epithelial-mesenchymal transition (EMT) markers and ZEB1 protein expressional level were detected by western blot . ZEB1 mRNA expressional level was analyzed using RT-qPCR. Drug affinity-responsive target stability (DARTS) method was used to detect the binding activity between Britannin and ZEB1. Co-immunoprecipitation (Co-IP) analysis was applied to test the ubiquitination of ZEB1. The mouse models for experimental lung metastasis of 4T1 cells were established to detect the anti-metastasis effect of Britannin in vivo , and the expressional levels of EMT markers in lung metastases were detected by immunohistochemistry . Results Britannin could inhibit cell growth and G2/M arrest in TNBC cells. Britannin could inhibit the migrating and invading ability without inducing severe apoptosis of MDA-MB-231 and 4T1 cells. Meanwhile, Britannin reduced the size and number of spheroids formed in these two cells, and decreased the expressional level of stem cells biomarker CD44 in tumor spheroids. Mechanism research showed that Britannin specifically bound to ZEB1 and induced its ubiquitination in MDA-MB-231 cells. Afterwards, Britannin disturbed protein stability and promoted ZEB1 protein degradation. Importantly, Britannin could not inhibit cell invasion and spheroid formation after ZEB1 expression was knocked down. Finally, Britannin inhibition of 4T1 cell metastasis was confirmed through establishing mouse models for the experimental lung metastasis. It was proved that both Britannin and paclitaxel could decrease the lung metastases, and Britannin could also down-regulate the protein expressional levels of ZEB1, MMP9 and CD44. Conclusion This study reveals that Britannin suppresses the invasion and metastasis of TNBC cells through degrading ZEB1, which suggests that Britannin can be used to prevent tumor metastasis and recurrence via degrading ZEB1proteins.
研究领域:
肿瘤学
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药理学
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细胞生物学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Siying Liu,Hai-Sheng Su,Zhengxia Yang,Yun Zhang
The identification of cancer cells and tumors significantly advances the accurate diagnosis of cancer and improves the patient survivor rates. However, it remains challenging to achieve the rapid and label-free differentiation of cancer cells from their normal counterparts. Herein, we developed a rapid and effective method for the synthesis of Ag nanorods (NRs) with high uniformity and yield. The surface-enhanced Raman scattering (SERS) substrates demonstrated uniformity and reliability, with a low relative standard deviation (RSD) of 10% and an enhancement factor (EF) of 3.32 × 105. The optimized AgNR SERS substrates were then applied in the quantitative analysis of creatinine and furthermore the bioanalysis of cell lysates for cell classification. Specifically, a high sensitivity with a low detection limit (LOD) of 5.3 μM and a limit of quantification (LOQ) of 17.68 μM was achieved for the detection of creatinine. More importantly, label-free SERS analysis showed the distinct spectral features of the cell lysates for normal breast cell strains (MCF-10A) and breast cancer cell strains (MCF-7, MDA-MB-231). Statistical analysis, such as t-test, principal component analysis (PCA), and orthogonal partial least-squares discriminant analysis (OPLS-DA) aided in the clear discrimination between the normal and cancer groups and further in differentiating the two cancer groups. These results demonstrate the great potential of the combination of a high-quality AgNR SERS substrate and statistical analysis for the identification of cancers.
研究领域:
纳米技术
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癌症诊断
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生物医学工程
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分析化学
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生物信息学
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产品关联
DOI
高影响因子
ANNALS OF AGRICULTURAL SCIENCE
·
2023
·
IF 5.9
Hong Hu,Liang Chen,Ying Huang,Kunping Wang,Xi Bai,Hongbin Pan
This work aimed to study the effect of phloretin on antioxidant profiles through nuclear factor erythroid 2–related 2 (Nrf2)-DNA interactions in the liver of heat-stressed broilers by Cleavage Under Targets and Tagmentation combined with high-throughput sequencing (CUT&Tag-seq). One hundred and sixty 22-day-old Arbor Acres broilers were divided into four groups: a normal temperature group (NT: 22.8–23.4 °C and 46–55.8 % humidity) was fed a basal diet and three high temperature groups (China Summer condition: 29.7–31.7 °C and 77.9–94.8 % humidity) were fed the basal diet supplemented with 0 (HT group), 100 mg/kg (LT group) and 200 mg/kg (PT group) phloretin. Liver samples were taken from 42-day-old broilers. High temperature condition increased ( P ≤ 0.05) the malondialdehyde (MDA) level, but decreased ( P ≤ 0.05) the activities and mRNA expression levels of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), catalase (CAT), and Nrf2. Dietary 200 mg/kg phloretin decreased ( P ≤ 0.05) the MDA level, but increased ( P ≤ 0.05) the activities and mRNA expression levels of GSH-Px, SOD, CAT and Nrf2 in the liver of heat-stressed broilers. CUT&Tag-seq showed that 4042 DEPs were up-regulated, while 2322 DEPs were down-regulated in the PT group compared with the HT group. The Nrf2-binding gene of DEPs contained SOD3, CAT, SOD2, and p38 mitogen-activated protein kinase. Most TOP20 significant KEGG pathways were associated with “Environmental Information Processing”. Summary, phloretin could improve oxidative damage by Nrf2 and its downstream DNA-sites including genes and Nrf2-bingding non-coding RNAs in the liver of heat-stressed broilers.
研究领域:
动物科学
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分子生物学
·
基因组学
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生物信息学
✓ 已验证
产品关联
DOI
高影响因子
PHYTOMEDICINE
·
2023
·
IF 7.9
Xiaohui Ma,Qi Wang,Chunyu Liu,Jianghanzi Liu,Ganqing Luo,Liangliang He,Tianhui Yuan,Rong-Rong He,Zhihong Yao
Background Phospholipid peroxidation signaling was recently revealed as a novel pathological mechanism of coronary heart disease (CHD), and small molecules involved in this redox-metabolic pathway are suggested as the potential anti-CHD drugs. Danlou Tablet (DLT), a famous traditional Chinese medicine (TCM) formula characterized by multi-component and multi-target regulation, is widely used in the clinical treatment of CHD by regulating lipid metabolism. However, little information is available addressing the corresponding pharmacological mechanisms and associated active components of DLT. Purpose To study whether phospholipid peroxidation involves a novel mechanism of DLT for the therapeutic effect of CHD and to explain the essential active components. Methods Firstly, the HPLC fingerprint was constructed to ensure the controllability of the quality of DLT. Then, a CHD animal model with the characteristics of lipid disorder and myocardial ischemia was established by a high-fat diet (HFD) combined with left anterior descending coronary artery (LAD) ligation. The therapeutic effect of DLT was further evaluated based on the results of the rat survival rate, cardiac function, cardiac histopathology, and myocardial ischemia indicators. Correspondingly, whether DLT can regulate the key indicators (ALOX15, GPX4, MDA, GSH, and NADPH) of the phospholipid peroxidation pathway was investigated, and Alox15 −/− mice have been applied to confirm the mechanism of DLT. Finally, the target-mediated characterization strategy based on ALOX15, including the integration of in vivo component characterization, network pharmacology, molecular docking analysis, and activity verification, has been further implemented to reveal the key bio-active components in DLT. Results In this study, a high-fat diet (HFD) combined with left anterior descending coronary artery (LAD) ligation was utilized to generate a CHD model, and DLT significantly improved the cardiac dysfunction and reduced the myocardial cell death susceptibility. Further results revealed that DLT reversed the protein expression of ALOX15 and GPX4, the key proteins of phospholipid peroxidation pathways, which subsequently influenced the parameters of phospholipid peroxidation (MDA, GSH, and NADPH). The ALOX15 knockout transgenic animal model confirmed that Alox15 −/− mice lost their cardioprotective effects with DLT, suggesting that DLT exerted therapeutic effects on CHD by regulating ALOX15-mediated phospholipid peroxidation. Finally, the target-mediated characterization strategy identified that daidzein is an active component in DLT against CHD by modulating ALOX15. Conclusion Innovatively, ALOX15-mediated phospholipid peroxidation was identified as one of the critical mechanisms of DLT exerting cardioprotective effects. Our findings elucidate a novel mechanism of DLT and provide some new drug evaluation targets and therapeutic strategies for CHD.
研究领域:
中医药
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心血管疾病
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药理学
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分子生物学
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动物模型
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产品关联
DOI
PubMed
高影响因子
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
·
2023
·
IF 3.9
Qingqing Du,Xiaoyun Wu,Kai Ma,Weiwei Liu,Panwen Liu,Toshihiko Hayashi,Kazunori Mizuno,Shunji Hattori,Hitomi Fujisaki,Takashi Ikejima
Type 2 diabetes (T2DM) is induced by the abundance of glucose and lipids , which causes glucolipotoxicity to the pancreatic β-cells. Silibinin is a natural flavonoid possessing the regulatory activity on insulin production and therapeutic activity in diabetic mice; however, its effect on glucolipotoxicity is not fully explained. This in vitro study investigates the effects of silibinin on palmitic acid (PA) and high glucose (HG)-induced cell loss and ferroptosis of rat insulinoma INS-1 cells. In the cells treated with PA and HG, expressions of glucose transporter 4 (Glut4) and carnitine acyltransferase I (CPT1) for β-oxidation of fatty acids are reduced. Mitochondria are the metabolic organelles for glucose and fatty acids. The mitochondrial membrane potential (MMP) and ATP production were decreased, while the ROS level was elevated in the cells treated with PA and HG, indicating an induction of mitochondrial disorder . Cell loss was partially rescued by ferroptosis inhibition, suggesting an involvement of ferroptosis in the cells treated with PA and HG. More importantly, the increases in total iron, lipid ROS, MDA and COX-2, and the decrease in ferroptosis inhibitory molecules GSH, GPX4 and FSP1 appeared in the cells treated with PA and HG, confirming the occurrence of ferroptosis. Moreover, PINK1/parkin-mediated mitophagy , a vital process for selective elimination of damaged mitochondria, was blocked. Interestingly, silibinin rescued the mitochondria, restricted the ferroptosis and restored the mitophagy. By using the pharmacological stimulator and inhibitor of mitophagy, and si-RNA transfection to silence PINK1 expression, silibinin's protective effect against ferroptosis caused by PA and HG treatment was found to depend on mitophagy. Collectively, our current study reveals the new mechanisms for the protection of silibinin against the injury of INS-1 cells treated with PA and HG, elucidates the participation of ferroptosis in glucolipotoxicity, highlighting the involvement of mitophagy in defense against ferroptotic cell death.
研究领域:
糖尿病
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细胞生物学
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药理学
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生物化学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ANALYST
·
2023
·Vol. 148
·期 10
·2352-2361
·
IF 4.2
Xiwen Li,Peiran Meng,Mingyang Sun,Yue Chen,Zhiyi Song,Xinyao Wang,Na Li,Yue Sun
Phospholipase C (PLC) has important biological functions in specific cancer types, immune disorders and neurodegeneration. Here, an ultrasensitive electrochemical sensor for PLC was developed via signal amplification based on breathing atom transfer radical polymerization (ATRP). First, phosphatidylethanolamine (PE) was immobilized on the surface of a gold electrode by L-cysteine and cross-linker. Then, PE was specially hydrolyzed by PLC to obtain the phosphate groups and tethered with the ATRP initiator α-bromophenacetic acid (BPAA) by the coordination action of Zr4+. After the breathing ATRP, a large number of electroactive monomers (ferrocenylmethyl methacrylate, FcMMA) were successfully grafted from BPAA. The experimental results indicated that the detection signal of the obtained electrode (sensor) was proportional to the concentration of PLC. The sensor showed a low detection limit of 0.270 U L−1 and a wide linear range of 1–40 U L−1 (R2 = 0.997). Most importantly, the sensor was successfully applied to detect PLC in breast cancer cells (MCF-7, MDA-MB-231) and nontumor cells (MCF-10A). The value obtained by our electrochemical sensor had no obvious difference from that determined by the commercial ELISA kit. These results showed that the fabricated PLC sensor had acceptable potential in clinical applications.
研究领域:
生物化学
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生物技术
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分析化学
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癌症研究
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免疫学
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神经科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-17
·
IF 10.6
Chen Wenting,Hu Fangfang,Gao Qian,Zheng Caiyun,Bai Que,Liu Jinxi,Sun Na,Zhang Wenhui,Zhang Yanni,Dong Kai,Lu Tingli
Chemodynamic therapy (CDT) based on intracellular Fenton reaction to produce highly cytotoxic reactive oxygen species (ROS) has played an essential role in tumor therapy. However, this therapy still needs to be improved by weakly acidic pH and over-expression of glutathione (GSH) in tumor microenvironment (TEM), which hinders its future application. Herein, we reported a multifunctional bimetallic composite nanoparticle MnO2@GA-Fe@CAI based on a metal polyphenol network (MPN) structure, which could reduce intracellular pH and endogenous GSH by remodeling tumor microenvironment to improve Fenton activity. MnO2 nanoparticles were prepared first and MnO2@GA-Fe nanoparticles with Fe3+ as central ion and gallic acid (GA) as surface ligands were prepared by the chelation reaction. Then, carbonic anhydrase inhibitor (CAI) was coupled with GA to form MnO2@GA-Fe@CAI. The properties of the bimetallic composite nanoparticles were studied, and the results showed that CAI could reduce intracellular pH. At the same time, MnO2 could deplete intracellular GSH and produce Mn2+ via redox reactions, which re-established the TME with low pH and GSH. In addition, GA reduced Fe3+ to Fe2+. Mn2+ and Fe2+ catalyzed the endogenous H2O2 to produce high-lever ROS to kill tumor cells. Compared with MnO2, MnO2@GA-Fe@CAI could reduce the tumor weight and volume for the xenograft MDA-MB-231 tumor-bearing mice and the final tumor inhibition rate of 58.09 ± 5.77%, showing the improved therapeutic effect as well as the biological safety. Therefore, this study achieved the high-efficiency CDT effect catalyzed by bimetallic through reshaping the tumor microenvironment.Graphical Abstract
研究领域:
癌症治疗
·
纳米技术
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生物医学工程
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药学
✓ 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）