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Two types of coumarins-specific enzymes complete the last missing steps in pyran- and furanocoumarins biosynthesis

Acta Pharmaceutica Sinica B 2024年第2期14卷 869-880页

作者： Yucheng Zhao Yuedong He Liangliang Han Libo Zhang Yuanzheng xia.Fucheng Yin xia.bing Wang Deqing Zhao Sheng xu Fei Qiao Yibei xia. Lingyi Kong Department of Resources Science of Traditional Chinese Medicines School of Traditional Chinese Pharmacyand State Key Laboratory of Natural MedicinesChina Pharmaceutical UniversityNanjing 210009China College of Bioscience and Biotechnology Hunan Agricultural UniversityChangsha 410128China Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines Department of Natural Medicinal ChemistryChina Pharmaceutical UniversityNanjing 210009China Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China Ministry of AgricultureTropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 517317China Institute of Botany Jiangsu Province and Chinese Academy of SciencesNanjing 210014China Department of Pharmacology School of Pharmacyand State Key Laboratory of Natural MedicinesChina Pharmaceutical UniversityNanjing 210009China

Pyran-and furanocoumarins are key representatives of tetrahydropyrans and tetrahydrofurans,respectively,exhibiting diverse physiological and medical ***,the biosynthetic mechanisms for their core structures remain poorly *** we combined multiomics analyses of biosynthetic enzymes in Peucedanum praeruptorum and in vitro functional verification and identified two types of key enzymes critical for pyran and furan ring biosynthesis in *** included three distinct *** prenyltransferases(PpPT1e3)responsible for the prenylation of the simple coumarin skeleton 7 into linear or angular precursors,and two novel CYP450 cyclases(PpDC and PpOC)crucial for the cyclization of the linear/angular precursors into either tetrahydropyran or tetrahydrofuran *** analyses of cyclases indicated that acid/base-assisted epoxide ring opening contributed to the enzyme-catalyzed tetrahydropyran and tetrahydrofuran ring *** possible acid/base-assisted catalytic mechanisms of the identified cyclases were theoretically investigated and assessed using site-specific *** identified two possible acidic amino acids Glu303 in PpDC and Asp301 in PpOC as vital in the catalytic *** study provides new enzymatic tools in the epoxide formation/epoxide-opening mediated cascade reaction and exemplifies how plants become chemically diverse in terms of enzyme function and catalytic process.

关键词： Tetrahydropyrans Tetrahydrofurans Baldwin rules Coumarins CYP450cyclase

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Thickening progression mechanism of silica fume-oil well cement composite system at high temperatures

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Petroleum Science 2024年第4期21卷 2793-2805页

作者： Hang Zhang Miao-Miao Hu Peng-Peng Li Guo-Qing Liu Qing-Lu Chang Jie Cao Ming Liu Wen-Hua xu Xiu-Jian xia.Jin-Tang Guo School of Chemical Engineering and Technology Tianjin University Zhejiang Institute of Tianjin University Haihe Laboratory of Sustainable Chemical Transformations CNPC Engineering Technology R&D Company Limited

This work studied the thickening progression mechanism of the silica fume-oil well cement composite system at high temperatures(110-180.C) in order to provide a theoretical guidance for the rational application of silica fume in the cementing engineering. Results showed that silica fume seldom affected the thickening progression of oil well cement slurry at 110-120.C, but when temperature reached above130.C, it would aggravate the bulging degree of thickening curves and significantly extend the thickening time, meanwhile causing the abnormal “temperature-based thickening time reversal” and“dosage-based thickening time reversal” phenomena in the range of 130-160.C and 170-180.C respectively. At 130-160.C, the thickening time of oil well cement slurry was mainly associated with the generation rate of calcium hydroxide(CH) crystal. The introduced silica fume would be attracted to the cement minerals' surface that were hydrating to produce CH and agglomerate together to form an“adsorptive barrier” to hinder further hydration of the inner cement minerals. This “adsorptive barrier”effect strengthened with the rising temperature which extended the thickening time and caused the occurrence of the “temperature-based thickening time reversal” phenomenon. At 170-180.C, the pozzolanic activity of silica fume significantly enhanced and considerable amount of C-S-H was generated, thus the “temperature-based thickening time reversal” vanished and the “dosage-based thickening time reversal” was presented.

关键词： Silica fume Oil well cement Thickening time reversal Pozzolanic reaction Adsorptive barrier CH and C−S−H

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A transcriptional cascade involving BBX22 and HY5 finely regulates both plant height and fruit pigmentation in citrus

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Journal of Integrative Plant Biology 2024年第8期66卷 1752-1768页

作者： Jialing Fu Li Liao Jiajing Jin Zhihao Lu Juan Sun Lizhi Song Yue Huang Shengjun Liu Ding Huang Yuantao xu Jiaxia. He Bin Hu Yiqun Zhu Fangfang Wu xia.Wang Xiuxin Deng Qiang xu National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops College of Horticulture and Forestry SciencesHuazhong Agricultural UniversityWuhan 430070P.R.China Hubei Hongshan Laboratory Wuhan 430070P.R.China Science and Technology Innovation Research Center of Majia Pomelo Shangrao 334000China

Dwarfing is a pivotal agronomic trait affecting both yield and *** species exhibit substantial variation in plant height,among which internode length is a core ***,the molecular mechanism governing internode elongation remains ***,we unveiled that the transcriptional cascade consisting of B-BOX DOMAIN PROTEIN 22(BBX22)and ELONGATED HYPOCOTYL 5(HY5)finely tunes plant height and internode elongation in ***-of-function mutations of BBX22 in an early-flowering citrus(Citrus hindsii“SJG”)promoted internode elongation and reduced pigment accumulation,whereas ectopic expression of BBX22 in SJG,sweet orange(***),pomelo(***)or heterologous expression of BBX22 in tomato(Solanum lycopersicum)significantly decreased internode ***,exogenous application of gibberellin A3(GA3)rescued the shortened internode and dwarf phenotype caused by *** experiments revealed that BBX22 played a dual role in regulation internode elongation and pigmentation in *** the one hand,it directly bound to and activated the expression of HY5,GA metabolism gene(GA2 OXIDASE 8,GA2ox8),carotenoid biosynthesis gene(PHYTOENE SYNTHASE 1,PSY1)and anthocyanin regulatory gene(Ruby1,a MYB DOMAIN PROTEIN).On the other hand,it acted as a cofactor of HY5,enhancing the ability of HY5 to regulate target genes ***,our results reveal the critical role of the transcriptional cascade consisting of BBX22 and HY5 in controlling internode elongation and pigment accumulation in *** the crosstalk regulatory mechanism between internode elongation and fruit pigmentation provides key genes for breeding of novel types with both dwarf and health-beneficial fortification in citrus.

关键词： anthocyanins BBX22 carotenoids citrus HY5 internode elongation plant height

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Microwave-assisted exploration of the electron configuration-dependent electrocatalytic urea oxidation activity of 2D porous NiCo_(2)O_(4) spinel

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Journal of Energy Chemistry 2024年第4期91卷 226-235页

作者： Jun Wan Zhiao Wu Guangyu Fang Jinglin xia. Jiao Dai Jiayue Guo Qingxia.g Li Yongfei You Kaisi Liu Huimin Yu Weilin xu Huiyu Jiang Minggui xia.Huanyu Jin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing&FinishingWuhan Textile UniversityWuhan 430200HubeiChina Institute for Sustainability Energy and ResourcesThe University of AdelaideAdelaideSA 5005Australia Future Industries Institute University of South AustraliaMawson Lakes CampusAdelaideSA 5095Australia

Urea holds promise as an alternative water-oxidation substrate in electrolytic ***-valence nickelbased spinel,especially after heteroatom doping,excels in urea oxidation reactions(UOR).However,traditional spinel synthesis methods with prolonged high-temperature reactions lack kinetic precision,hindering the balance between controlled doping and highly active two-dimensional(2D)porous structures *** significantly impedes the identification of electron configuration-dependent active sites in doped 2D nickel-based ***,we present a microwave shock method for the preparation of 2D porous NiCo_(2)O_(4)*** the transient on-off property of microwave pulses for precise heteroatom doping and 2D porous structural design,non-metal doping(boron,phosphorus,and sulfur)with distinct extranuclear electron disparities serves as straightforward examples for *** tuning of lattice parameter reveals the impact of covalent bond strength on NiCo_(2)O_(4)structural *** introduced defect levels induce unpaired d-electrons in transition metals,enhancing the adsorption of electron-donating amino groups in urea ***,Bode plots confirm the impact mechanism of rapid electron migration caused by reduced band gaps on UOR *** prepared phosphorus-doped 2D porous NiCo_(2)O_(4),with optimal electron configuration control,outperforms most reported *** controlled modification strategy advances understanding theoretical structure-activity mechanisms of high-performance 2D spinels in UOR.

关键词： 2D materials Spinel Microwave Electrocatalysis Urea oxidation reaction

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One-step controlled electrodeposition nickel sulfides heterointerfaces favoring the desorption of hydroxyl groups for efficient hydrogen generation

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Rare Metals 2024年第9期43卷 4377-4386页

作者： Ru-Chun Li Xin-Yue Zhang Ze-Yue Qu Feng-Yi Liu Quan-Qing xu Zhao-xia.Hu Jing-Wei Li Mohamed-Nawfal Ghazzal Jin-Li Yu Faculty of Chemistry and Chemical Engineering Yunnan Normal University Foshan Gaoke Hechuang Technology Co. Ltd. School of Chemistry and Chemical Engineering Guangzhou University Universite′Paris-Saclay UMR 8000 CNRSInstitut de Chimie Physique Department of Chemistry City University of Hong Kong

The heterointerface engineering involving different components or phases represents a desirable strategy for enhancing the sluggish kinetics of hydrogen evolution reaction （HER）.However,constructing desired heterointerfaces and elucidating the reaction mechanisms on the interface remains a considerable *** this work,we propose a straightforward electrochemical synthesis strategy to prepare the nickel sulfide-based heterointerfaces for *** mechanism of electrochemical synthesis is revealed,wherein metal-thiourea species can be formed at the cathode potential and subsequently oxidized to nickel sulfides at the anode *** this mechanism,a range of nickel sulfides,including NiS,Ni3S2/NiS,Ni/Ni3S2and Ni3S2,have been successfully synthesized by tuning the potential range of cyclic *** these,the obtained Ni3S2/NiS@CC（CC:carbon cloth） exhibits the smallest overpotential of84 mV at 10 mA·cm-2and high *** calculations further reveal that the combination of NiS and Ni3S2induces electron redistribution at the interface,and thus the Volmer process is effectively promoted with faster water dissociation and OH desorption ***,the simplicity method coupled with a clear synthesis mechanism and outstanding HER performance highlights its promising potential for practical applications.

关键词： Electrochemical synthesis Heterointerfaces Hydrogen evolution reaction OH desorption kinetics

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Establishing VIGS and CRISPR/Cas9 techniques to verify RsPDS function in radish

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Journal of Integrative Agriculture 2024年第5期23卷 1557-1567页

作者： Jiali Ying Yan Wang Liang xu Tiaojiao Qin Kai xia.Peng Zhang Yinbo Ma Keyun Zhang Lun Wang Junhui Dong Lianxue Fan Yuelin Zhu Liwang Liu National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization/Key Laboratory of Horticultural Crop Biology and Genetic Improvement(East China)of Ministry of Agriculture and Rural Affairs/College of Horticulture Nanjing Agricultural UniversityNanjing210095China College of Horticulture and Landscape Architecture Yangzhou UniversityYangzhou 225009China College of Life Sciences Nanjing Agricultural UniversityNanjing 210095China

Virus-induced gene silencing(VIGS)and clustered regularly interspaced short palindromic repeats/CRISPR-associated protein(CRISPR/Cas)systems are effective technologies for rapid and accurate gene function verification in modern plant ***,the investigation of gene silencing and editing in radish remains *** this study,a bleaching phenotype was generated through the knockdown of RsPDS using tobacco rattle virus(TRV)-and turnip yellow mosaic virus(TYMV)-mediated gene silencing *** TYMV-mediated gene silencing efficiency was higher than the TRV-based VIGS system in *** expression level of RsPDS was significantly inhibited using VIGS in'NAU-067'radish *** rootless seedlings of‘NAU-067'were infected with Agrobacterium rhizogenes using the 2300GN-Ubi-RsPDS-Cas9 vector with two target *** adventitious roots were blue with GUs staining,and four of these adventitious roots were edited at target sequence 1 of the RsPDS gene as indicated by Sanger ***,albino lines were generated with ***-mediated transformation of radish *** base substitutions and three base deletions occurred at target sequence 2 in Line 1,and three base insertions and three base substitutions occurred at target sequence 1 in Line *** study shows that VIGS and CRISPR/Cas9 techniques can be employed to precisely verify the biological functions of genes in radish,which will facilitate the genetic improvement of vital horticultural traits in radish breeding programs.

关键词： Raphanus sativus L. VIGS CRISPR/Cas9 Agrobacterium rhizogenes A.tumefaciens RsPDS

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New perspectives on the therapeutic potential of quercetin in non-communicable diseases:Targeting Nrf2 to counteract oxidative stress and inflammation

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Journal of Pharmaceutical Analysis 2024年第6期14卷 805-822页

作者： Li Zhang Li-Yue xu Fei Tang Dong Liu xia.-Lan Zhao Jing-Nan Zhang Jia xia.Jiao-Jiao Wu Yu Yang Cheng Peng Hui Ao State Key Laboratory of Southwestern Chinese Medicine Resources School of PharmacyChengdu University of Traditional Chinese MedicineChengdu611137China Innovative Institute of Chinese Medicine and Pharmacy Chengdu University of Traditional Chinese MedicineChengdu611137China

Non-communicable diseases(NCDs),including cardiovascular diseases,cancer,metabolic diseases,and skeletal diseases,pose significant challenges to public health *** complex pathogenesis of these diseases is closely linked to oxidative stress and inflammatory *** factor erythroid 2-related factor 2(Nrf2),a critical transcription factor,plays an important role in regulating antioxidant and anti-inflammatory responses to protect the cells from oxidative damage and inflammation-mediated ***,Nrf2-targeting therapies hold promise for preventing and treating ***(Que)is a widely available flavonoid that has significant antioxidant and anti-inflammatory *** modulates the Nrf2 signaling pathway to ameliorate oxidative stress and *** modulates mitochondrial function,apoptosis,autophagy,and cell damage biomarkers to regulate oxidative stress and inflammation,highlighting its efficacy as a therapeutic agent against ***,we discussed,for the first time,the close association between NCD pathogenesis and the Nrf2 signaling pathway,involved in neurodegenerative diseases(NDDs),cardiovascular disease,cancers,organ damage,and bone ***,we reviewed the availability,pharmacokinetics,pharmaceutics,and therapeutic applications of Que in treating *** addition,we focused on the challenges and prospects for its clinical *** represents a promising candidate for the treatment of NCDs due to its Nrf2-targeting properties.

关键词： Quercetin Nrf2 Non-communicable diseases Antioxidant Anti-inflammatory Availability

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Individualized anti-thrombotic therapy for acute myocardial infarction complicated with left ventricular thrombus: A case report

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World Journal of Clinical Cases 2024年第4期12卷 835-841页

作者： Yan Song Hua Li xia.Zhang Lei Wang Hong-Yan xu Zhi-Chao Lu xia.-Gang Wang Bo Liu Department of Clinical Pharmacy Zibo Municipal HospitalZibo 255400Shandong ProvinceChina Department of Cardiology Zibo Municipal HospitalZibo 255400Shandong ProvinceChina Department of Pharmacy Zibo Municipal HospitalZibo 255400Shandong ProvinceChina Department of Imaging Zibo Municipal HospitalZibo 255400Shandong ProvinceChina Department of Pulmonary and Critical Care Medicine Department of Clinical MicrobiologyZibo City Key Laboratory of Respiratory Infection and Clinical MicrobiologyZibo City Engineering Technology Research Center of Etiology Molecular DiagnosisZibo Municipal HospitalZibo 255400Shandong ProvinceChina

BACKGROUND Presently,there is no established standard anti-blood clot therapy for patients facing acute myocardial infarction(AMI)complicated by left ventricular thrombus(LVT).While vitamin K antagonists are the preferred choice for oral blood thinning,determining the best course of blood-thinning medication remains *** is unclear if non-vitamin K antagonist oral blood thinners have different effectiveness in treating *** study significantly contributes to the medical *** SUMMARY The blood-thinning treatment of a patient with AMI and LVT was *** blood-thinning therapy included daily enteric-coated aspirin tablets at 0.1 g,daily clopidogrel hydrogen sulfate at 75 mg,and dabigatran etexilate at 110 mg twice *** 15 d,the patient’s LVT did not decrease but instead *** pharmacists comprehensively analyzed the cases from the perspective of the patient’s disease status and drug *** drug regimen was reformulated for the patient,replacing dabigatran etexilate with warfarin,and was administered for six *** clinical pharmacist provided the patient with professional and standardized pharmaceutical *** patient’s condition was discharged after meeting the international normalized ratio value(2-3)*** patient fully complied with the follow-up,and the time in the therapeutic range was 78.57%,with no serious adverse effects during pharmaceutical *** Warfarin proves to be an effective drug for patients with AMI complicated by LVT,and its blood-thinning course lasts for six months.

关键词： Myocardial infarction Left ventricular thrombus Dabigatran etexilate Warfarin Clinical pharmacist Case report

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Tuning electronic properties of cobalt phthalocyanines for oxygen reduction and evolution reactions

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Science China Chemistry 2024年第1期67卷 398-407页

作者： Jianlin Jiang Zhen Liu Shuaijun Pan Xinnian xia.Bing Qin Yang Hu xuxu Wang Jiamin Lan Yu Gu Encai Ou Weijian xu Joseph J.Richardson Rui Guo SINOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083China College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China College of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128China Department of Chemical Engineering The University of MelbourneParkville 3010Australia College of Environmental Science and Engineering Hunan UniversityChangsha 410082China School of Engineering RMIT UniversityMelbourneVictoria 3001Australia

Metal–phthalocyanines are a class of catalytically active materials promising in energy conversion and storage fields(e.g.,electrocatalysis).However,understanding and controlling the electrochemical properties in metal-phthalocyanine systems is ***,we elucidate the electrocatalytic origins of a series of cobalt-phthalocyanine molecular catalysts and finetune their electronic properties at the atomic level,both experimentally and *** interactions between the cobalt center and the local coordination environment are regulated by introducing either electron-donating or electron-withdrawing groups on the phthalocyanine ligand,and the spin-orbit splitting of cobalt is increased by~0.15 eV compared with the nonsubstituted ***,the aminated cobalt phthalocyanine-based electrocatalysts exhibit low free energies in the ratedetermining steps of the oxygen reduction(-1.68 eV)and oxygen evolution reactions(0.37 eV).This contributes to the high electrocatalytic activity(e.g.,a halfwave potential of 0.84 V and an overpotential of 0.30 V at 10 mAcm^(-2)),featuring a high selectivity of a four-electron pathway(i.e.,a negligible by-product of hydrogen peroxide).These catalysts also exhibit exceptional kinetic current density(Tafel slope of 100 mV dec^(-1))in oxygen reduction reactions,in addition to a superior power density(158 mWcm^(-2))and a high cycling stability(>1,300 cycles)in Zn-air batteries,outperforming the commercial Pt/C and/or RuO2counterparts.

关键词： interfacial wettability molecular catalysts carbon nanotubes density functional theory electrochemistry

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Penpulimab,an anti-PD-1 antibody,for heavily pretreated metastatic nasopharyngeal carcinoma:a single-arm phase II study

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Signal Transduction and Targeted Therapy 2024年第7期9卷 3056-3062页

作者： xia.zhong Chen Wei Wang Qingfeng Zou xia.dong Zhu Qin Lin Yi Jiang Yan Sun Liangfang Shen Lin Wang Guorong Zou xia.yan Lin Shaojun Lin Minying Li Ying Wang Ruilian xu Rui Ao Rensheng Wang Haifeng Lin Shuang Huang Tingting xu Wenting Li Mengying xia.Yu xia.Zhongmin Wang Baiyong Li Jingao Li Chaosu Hu Department of Radiation Oncology Cancer Hospital of the University of ChineseAcademy of Sciences(Zhejiang Cancer Hospital)HangzhouChina Gastroenterology and Urology Department II Hunan Cancer Hospital/the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangshaChina Clinical Research Center for Gastrointestinal Cancer in Hunan Province ChangshaChina Department of Medical Oncology Affiliated Cancer Hospital&Institute of Guangzhou Medical UniversityGuangzhouChina Department of Radiation Oncology Guangxi Medical University Affiliated Tumor Hospital&Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor(Guangxi Medical University)Ministry of Education&Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency TumorGuangxi Medical UniversityNanningChina Department of Radiation Oncology Cancer CenterThe First Affiliated Hospital of Xiamen UniversityXiamenChina Department of Medical Oncology Cancer Hospital of Shantou University Medical CollegeShantouChina Department of Radiation Oncology Peking University Cancer Hospital&InstituteBeijingChina Department of Oncology Xiangya Hospital Central South UniversityChangshaChina Department of Medical Oncology Hainan General HospitalHainan Affiliated Hospital of Hainan Medical UniversityHaikouChina Department of Oncology The Affiliated Panyu Central Hospital of Guangzhou Medical UniversityGuangzhouChina Department of Medical Oncology Fujian Medical University Union HospitalFuzhouChina Department of Radiation Oncology Clinical Oncology School of Fujian Medical UniversityFujian Cancer HospitalFuzhouChina Department of Radiation Therapy for Thoracic Tumors Zhongshan City People’s HospitalZhongshanChina Tumor Radiotherapy Center Chongqing University Cancer HospitalChongqing Cancer HospitalChongqing Cancer InstituteChongqingChina Department of Oncology Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSo

Penpulimab is an anti-programmed cell death-1(PD-1)IgG1 antibody with no Fc gamma receptor(FcγR)binding activity,and thus theoretically reduced immune-related adverse events(irAEs)while maintaining *** single-arm,phase II trial conducted across 20 tertiary care centers in China enrolled adult patients with metastatic nasopharyngeal carcinoma(NPC)who had failed two or more lines of previous systemic *** received 200-mg penpulimab intravenously every 2 weeks(4 weeks per cycle)until disease progression or intolerable *** primary endpoint was objective response rate(ORR)per RECIST(version 1.1),as assessed by an independent radiological review *** secondary endpoints included progression-free survival(PFS)and overall survival(OS).One hundred thirty patients were enrolled and 125 were efficacy *** the data cutoff date(September 28,2022),1 patient achieved complete response and 34 patients attained partial *** ORR was 28.0%(95%CI 20.3–36.7%).The response was durable,with 66.8%still in response at 9 ***-three patients(26.4%)were still on *** median PFS and OS were 3.6 months(95%CI=1.9–7.3 months)and 22.8 months(95%CI=17.1 months to not reached),***(7.6%)patients experienced grade 3 or higher *** has promising anti-tumor activities and acceptable toxicities in heavily pretreated metastatic NPC patients,supporting further clinical development as third-line treatment of metastatic NPC.

关键词： metastatic nasopharyngeal supporting

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