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Evaluation of erastin synergized cisplatin anti-nasopharyngeal carcinoma effect with a glutathione-activated near-infrared fluorescent probe

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Chinese Chemical Letters 2024年第2期35卷 311-316页

作者： Rong He Dandan Tang Ningge Xu Heng Liu Kun Dou Xuejun Zhou Fabiao Yu Department of Otolaryngology Head and Neck SurgeryThe First Affiliated Hospital of Hainan Medical UniversityHaikou 570102China Key Laboratory of Hainan Trauma and Disaster Rescue Key Laboratory of Emergency and TraumaMinistry of EducationEngineering Research Center for Hainan Bio-Smart Materials and Bio-Medical DevicesCollege of Emergency and TraumaHainan Medical UniversityHaikou 571199China Sichuan Provincial General Hospital of Judicial Police Chengdu 610225China

Nasopharyngeal carcinoma(NPC),a malignant tumor originating from the nasopharynx,is one of the common malignant tumors of the head and *** are significant geographical differences in the incidence of nasopharyngeal carcinoma,with a high incidence in China and Southeast Asian ***,we designed and synthesized a novel near-infrared fluorescent(NIRF)probe to detect glutathione(GSH)in cellular and tumor environments using semi-naphthofluorescein(SNAFL)as the fluorescent molecular backbone and 2-fluoro-4-nitrobenzenesulfonate as the recognition *** reaction with GSH,SNAFL-GSH emitted a fluorescence signal,and its emission wavelength at 650 nm was remarkably *** results of selectivity experiments indicated that SNAFL-GSH was able to discriminate GSH from Cys,Hcy,and H_(2) ***,SNAFL-GSH could image both endogenous and exogenous GSH and distinguish normal and cancer cells by fluorescence signal *** the cellular level,cisplatin(DDP)-induced ferroptosis and inhibition of proliferation of various NPC cell lines(CNE2,CNE1,5-8F cells)by erastin combined with DDP were visualized with the help of *** a mouse tumor xenograft model,we successfully employed SNAFL-GSH for the evaluation of the efficacy of erastin combined with DDP in the treatment of *** importantly,the probe could image cancerous tissue sections from NPC patients with an imaging depth of approximately 80µ*** was foreseen that SNAFL-GSH offered great potential for application in the diagnosis and evaluation of the therapeutic efficacy of NPC,and these results would also provide new ideas for the clinical treatment of NPC.

关键词： glutathione NIRF probe Ferroptosis Anti-tumor therapy evaluation Bioimaging

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Protective role of electrophile-reactive glutathione for DNA damage repair inhibitory effect of dibromoacetonitrile

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Journal of Environmental Sciences 2022年第7期34卷 305-314页

作者： Yukako Komaki Koki Suganuma Yuko Ibuki Graduate Division of Nutritional and Environmental Sciences University of ShizuokaShizuoka 422-8526Japan

Dibromoacetonitrile(DBAN) is a disinfection byproduct(DBP) and linked with cancer in rodents, but the mechanism of its carcinogenicity has not been fully elucidated. We recently reported that DBAN induced inhibition of nucleotide excision repair(NER). In this study, we investigated if glutathione(GSH) is involved in the DBAN-induced inhibition of NER. Human keratinocytes Ha Ca T were pretreated with L-buthionine-(S,R)-sulfoximine(BSO) to deplete intracellular GSH. BSO treatment markedly potentiated the DBAN-induced NER inhibition as well as intracellular oxidation. The recruitment of NER proteins(transcription factor IIH, and xeroderma pigmentosum complementation group G) to DNA damage sites was inhibited by DBAN, which was further exacerbated by BSO treatment. Our results suggest that intracellular GSH protects cells from DBAN-induced genotoxicity including inhibition of DNA damage repair.

关键词： Disinfection byproducts Haloacetonitriles Pyrimidine dimers glutathione DNA damage repair

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Evaluation of N-acetylcysteine and glutathione as quenching agents for the analysis of halogenated disinfection by-products

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Journal of Environmental Sciences 2022年第7期34卷 71-79页

作者： Shunke Ding Menglin Wu Rong Xiao Chao Fang Qi Wang Bin Xu Wenhai Chu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Yangtze River Water Environment Ministry of EducationTongji UniversityShanghai 200092China School of Life and Environmental Science Wenzhou UniversityZhejiang 325035China

Disinfection by-products(DBPs), formed from the reactions of disinfectants with natural organic matter and halides in drinking water, were considered to be cytotoxic and genotoxic, and might trigger various cancers. The relatively low concentration of DBPs in finished water(low μg/L or even ng/L levels) and the interference from water matrix inhibited in situ determination of DBPs. Moreover, the further formation and degradation of DBPs by disinfectants during the holding time(several hours to several days) from sample collection to analysis could adversely affect the determination of DBPs. To obtain accurate, precise and reliable data of DBP occurrence and formation, robust and reliable sample preservation is indispensable. However, the commonly used quenching agents(e.g., sodium sulfite, sodium thiosulfate, and ascorbic acid) for sample preservation can decompose reactive DBPs by reductive dehalogenation. This study evaluated the performance of N-acetylcysteine(NAC) and glutathione(GSH) as quenching agents for the analysis of halogenated DBPs by investigating the stoichiometry of the disinfectant-quenching agent reaction, the formation of DBPs during chlor(am)ination of NAC or GSH, and the effects of NAC or GSH on the stability of 18 individual DBPs and total organic halogen(TOX). Based on the results of this study, NAC and GSH were considered to be ideal quenching agents for the analysis of most DBPs and TOX, except halonitromethanes.

关键词： Disinfection by-products Total organic halogen Quenching agents N-acetylcysteine glutathione

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B7-H3 confers stemness characteristics to gastric cancer cells by promoting glutathione metabolism through AKT/pAKT/Nrf2 pathway

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Chinese Medical Journal 2023年第16期136卷 1977-1989页

作者： Lu Xia Yuqi Chen Juntao Li Jiayu Wang Kanger Shen Anjing Zhao Haiyan Jin Guangbo Zhang Qinhua Xi Suhua Xia Tongguo Shi Rui Li Jiangsu Institute of Clinical Immunology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Department of Gastroenterology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Jiangsu Key Laboratory of Clinical Immunology Soochow UniversitySuzhouJiangsu 215000China Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Department of Oncology The First Affiliated Hospital of Naval Military Medical UniversityShanghai 200433China Department of Oncology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China

Background:Cancer stem-like cells(CSCs)are a small subset of cells in tumors that exhibit self-renewal and differentiation *** play a vital role in tumor formation,progression,relapse,and therapeutic resistance.B7-H3,an immunoregulatory protein,has many protumor ***,little is known about the mechanism underlying the role of B7-H3 in regulating gastric cancer(GC)*** study aimed to explore the impacts of B7-H3 on GC stemness and its underlying ***:GC stemness influenced by B7-H3 was detected both in vitro and in *** expression of stemness-related markers was examined by reverse transcription quantitative polymerase chain reaction,Western blotting,and flow *** formation assay was used to detect the sphere-forming *** underlying regulatory mechanism of B7-H3 on the stemness of GC was investigated by mass spectrometry and subsequent validation *** signaling pathway(Protein kinase B[Akt]/Nuclear factor erythroid 2-related factor 2[Nrf2]pathway)of B7-H3 on the regulation of glutathione(GSH)metabolism was examined by Western blotting ***-color immunohistochemistry(mIHC)was used to detect the expression of B7-H3,cluster of differentiation 44(CD44),and Nrf2 on human GC ***’s t-test was used to compare the difference between two *** correlation analysis was used to analyze the relationship between two *** Kaplan-Meier method was used for survival ***:B7-H3 knockdown suppressed the stemness of GC cells both in vitro and in *** spectrometric analysis showed the downregulation of GSH metabolism in short hairpin B7-H3 GC cells,which was further confirmed by the experimental ***,stemness characteristics in B7-H3 overexpressing cells were suppressed after the inhibition of GSH ***,Western blotting suggested that B7-H3-induced activation of GSH metabolism occurred through the AKT/Nrf2 pathway,and inhibition

关键词： B7-H3 Cancer stem-like cells glutathione Protein kinase B Nuclear factor erythroid 2-related factor 2 Gastric cancer

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Palladium Nanoparticles/Graphdiyne Oxide Nanocomposite with Excellent Peroxidase-like Activity and Its Application for glutathione Detection

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Chemical Research in Chinese Universities 2022年第2期38卷 529-534页

作者： LAN Weifei HU Ruifeng HUANG Danrong DONG Xu SHEN Gangyi CHANG Shan DAI Dongsheng School of Pharmacy Minzu University of ChinaBeijing 100081P.R.China Institute of Chemistry Chinese Academy of SciencesBeijing 100190P.R.China Institute of Bioinformatics and Medical Engineering School of Electrical and Information EngineeringJiangsu University of TechnologyChangzhou 213001P.R.China

In this study, palladium nanoparticles loaded graphdiyne oxide (Pd/GDYO) nanocomposite were fabricated by in-situ reduction of palladium chloride in the dispersion of GDYO, and characte-rized by Raman spectra, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The synthesized Pd/GDYO was first found to have catalytic activities similar to those of the peroxidase enzyme, which can catalyze the oxidation of peroxidase substrate 3,3',5,5'-tetramethylbenzidine(TMB) in the presence of hydrogen peroxide(H2O2). Steady-state kinetic studies showed that the catalytic reaction of Pd/GDYO follows a ping-pong mechanism, and Pd/GDYO has a stronger activity to TMB with a Michaelis constant(Km) value of 5.32×10-4 mmol/L. Based on the shielding effect of glutathione(GSH) on the Pd/GDYO-H2O2-TMB reaction system, a colorimetric detection method for GSH was deve-loped with a wide linear range from 0.1 μmol/L to 40 μmol/L and a limit of detection of 0.1 μmol/L. The method was successfully applied for fast and accurate detection of GSH in injection powder drugs. It was expected that this peroxidase-like Pd/GDYO nano- composite would have wide applications in the fields of biomedicine and environmental chemistry.

关键词： Palladium nanoparticle/graphdiyne oxide nanocomposite Peroxidase-like activity Colorimetric detection glutathione

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Biomass-based Carbon Dots as Peroxidase Mimics for Colorimetric Detection of glutathione and L-Cysteine

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Chemical Research in Chinese Universities 2022年第6期38卷 1446-1452页

作者： LIU Junxue WANG Yufei MA Wenyan ZONG Siyu LI Jiyang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012P.R.China

Biomass-carbon dots(named as B-CDs) have been successfully prepared via facile one-step hydrothermal reflux treatment at a low temperature from passion fruit peel. The as-prepared B-CDs had a uniform sphere morphology and size of 1–3 nm, which possessed rich nitrogen/oxygen-containing functional groups. B-CDs could imitate peroxidase and accelerate the reaction process of H2O_(2) oxidizing the substrate 3,3’,5,5’-tetramethylbenzidine(TMB), which caused an obvious color change in the solution due to the oxidization of achromic TMB into blue oxidation product(ox-TMB) with an absorption peak at 652 nm. Furthermore, the product could be further reduced to native colorless TMB by the reducing agent glutathione or L-Cysteine. Thus, depending on the peroxidase-like properties of B-CDs, we developed a colorimetric approach to detecting both glutathione and L-Cysteine, which showed superior selective and sensitive detection towards glutathione and L-Cysteine in a linear range of 0–20 µmol/L. The limits of detection were 0.62 and 0.58 µmol/L, respectively.

关键词： Carbon dot Biomass Colorimetry glutathione Cysteine

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A melatonin-based targetable fluorescent probe for screening of tumor cells and real-time imaging of glutathione fluctuations in tumor cells

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Chinese Chemical Letters 2022年第5期33卷 2527-2531页

作者： Xiwei Li Caiyun Liu Na Gao Wenlong Sheng Baocun Zhu School of Water Conservancy and Environment University of JinanJi’nan 250022China Biology Institute Qilu University of Technology(Shandong Academy of Sciences)Ji’nan 250103China

glutathione(GSH)is a key maintainer of cellular redox balance and plays an important role in many physiological *** example,GSH has been widely implicated in cancer initiation,progression and ***,the concentrations of GSH in tumor cells can influence drug *** the serious harmfulness of cancer and the important roles of GSH in cancer,it has great significance to devel-opment probes for screening of tumor cells and real-time monitoring of GSH fluctuations in tumor ***,no targetable probe for reversible imaging of GSH in tumor cells has been ***,we constructed a melatonin-based targetable and reversible fluorescent probe(GR-MT)for screening of tumor cells and real-time imaging of GSH fluctuations in tumor *** probe uses coumarin as the skeleton,Michael addition reaction as the reaction mechanism,and melatonin as the targeted groups of tumor *** experimental results demonstrate this probe has many advantages including high selec-tivity,satisfactory sensitivity,excellent reversible ability,rapid reaction speed,and outstanding targetabil-ity of tumor ***,this study provides a promising tool for tumor cells screening and real-time detection of GSH fluctuations in specific tumor cells.

关键词： glutathione Reversible detection Fluorescent probe Tumor cells screening Melatonin

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Ultrathin FeS nanosheets with high chemodynamic activity for sensitive colorimetric detection of H_(2)O_(2) and glutathione

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Chinese Chemical Letters 2022年第6期33卷 3217-3220页

作者： Yefan Duan Qi Li Panpan He Yan Li Jingrun Song Jing Wang Junjie Liu Jiang Zhou Fei Chen Zhusheng Huang Jianfei Sun Ying Zhang Zhimin Luo State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)College of Electronic and Optical Engineering&College of MicroelectronicsNanjing University of Posts and TelecommunicationsNanjing 210023China Ningbo Medical Center Li Huili Hospital Ningbo 315040China Laboratory of Polymer Materials and Engineering NingboTech UniversityZhejiang UniversityNingbo 315100China State Key Laboratory of Bioelectronics Jiangsu Laboratory for Biomaterials and DevicesDepartment of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210009China

Iron chalcogenides have attracted great interest as potential substitutes of nature enzymes in the colorimetric biological sensing due to their unique chemodynamic ***,we report the preparation of ultrathin Fe S nanosheets(NSs)by a simple one-pot hydrothermal method and the prepared Fe S NSs exhibit strong Fenton-reaction activity to catalyze hydrogen peroxide(H_(2)O_(2))for generation of hydroxyl radical(^(·)OH).Based on the chromogenic reaction of resultant^(·)OH with 3,3,5,5-tetramethylbenzidine(TMB),we develop colorimetric biosensors for highly sensitive detection of H_(2)O_(2)and glutathione(GSH).The fabricated biosensors show wide linear ranges for the detection of H_(2)O_(2)(5–150μmol/L)and GSH(5–50μmol/L).Their detection limits for H_(2)O_(2)and GSH reach as low as0.19μmol/L and 0.14μmol/L,*** experimental results of sensing intracellular H_(2)O_(2)and GSH demonstrate that this colorimetric method can realize the accurate detection of H_(2)O_(2)and GSH in normal cells(L02 and 3T3)and cancer cells(MCF-7 and He La).Our results have demonstrated that the synthesized Fe S NSs is a promising material to construct colorimetric biosensors for the sensitive detection of H_(2)O_(2)and GSH,holding great promising for medical diagnosis in cancer therapy.

关键词： FeS nanosheets Chemodynamic activity Colorimetric biosensors Hydrogen peroxide glutathione

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Fluorescence "turn-on" Sensing Platform for glutathione Detection Using Chitosan-Based Glutaraldehyde Non-conjugated Polymers

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Journal of Analysis and Testing 2022年第3期6卷 327-334页

作者： Wen-Jing Qi Hong-Kun He Xue Tian Yi Song Xue-Ni Li Rong Li Ping-Ping Hu Xiao-Mei Huang Chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331China School of Pharmaceutical Sciences Chongqing UniversityChongqing 401331China Department of Chemistry and Chemical Engineering Sichuan University of Arts and ScienceDazhou 635000China

We established a f uorescence“turn-on”sensing platform for glutathione(GSH)detection utilizing chitosan-based glutaraldehyde non-conjugated polymers(GCPF)as nanomaterials via f uorescence resonance energy transfer(FRET)*** to the overlapping property of absorption spectrum of MnO^(2)nanosheets with f uorescence spectrum of GCPF,f uorescent intensity of GCPF was quenched in the presence of MnO^(2)nanosheets because of FRET *** GSH was added,MnO^(2)nanosheets were reduced and decomposed into large amounts of Mn^(2+)ions owing to reducing property of ***,the quenched f uorescent intensity was turned on ***,this platform based on MnO^(2)nanosheet has been f rst applied to f uorescence“turn-on”detection of GSH from 0.5 to 50μmol/L with sdetection limit of 84 nmol/*** showed high selectivity in GSH detection towards other ions and biomolecules such as L-lysine,L-threonine,L-valine,L-glutamic acid and DL-aspartic *** it was utilized in detecting GSH in serum samples,satisfactory recoveries ranged from 101.5%to 103.2%,indicating the accuracy of this f uorescence“turn-on”platform in bioanalysis.

关键词： Chitosan-based glutaraldehyde non-conjugated polymers MnO_(2)nanosheets glutathione Fluorescence resonance energy transfer

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glutathione as the End Capper for Cyclodextrin/PEG Polyrotaxanes

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Chinese Journal of Polymer Science 2014年第8期32卷 1003-1009页

作者： Qiao Song Zhi Luo 童新明 Yi Du Yanbin Huang Department of Chemical Engineering Tsinghua University

A facile one-pot synthesis of α-cyclodextrin-based polyrotaxane （PR） in aqueous solution is reported, where the peptide glutathione was used as the end-capping agent and the thiol-ene Michael addition was used as the end-capping reaction. Both polyrotaxanes with low threading ratio and high threading ratio were successfully obtained. In contrast to the conventionally used multiple-step synthesis methods and hydrophobic end cappers, this one-pot aqueous synthesis as well as the biocompatibility of the end-capping agent could result in a much more biocompatible PR to be used as biomaterials.

关键词： Polyrotaxane Cyclodextrin Polyethylene glycol glutathione Biocompatibility.

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