A sensitive and reliable method was developed and validated for the simu1taneous determination of 6 carbamate pesticides and relevant metabolites based on the modified fast QuEChERS(quick,easy,cheap,effective,rugged a...A sensitive and reliable method was developed and validated for the simu1taneous determination of 6 carbamate pesticides and relevant metabolites based on the modified fast QuEChERS(quick,easy,cheap,effective,rugged and safe)method combined with ultra-performance 1iquid chromatography-tandem mass spectrometry(UPLC-MS/MS).The method was also applied in the analysis of 23 commonly consumed oilseeds and oil samples.The sample was extracted with acetonitrile for three times and then the extracted solution was filtered directly though 250 mg precipitated silica adsorbent(PSA)and 250 mg Cis The mobile phase was water(containing 0.1%formic acid)and acetonitrile.The extemal standard protocols were adopted to validate the method in terms of recovery,1inearity,precision,sensitivity,and relative standard deviation(RSD)under the optimized conditions.The linear calibration curves with different ranges were established with R^(2)>0.9973,limit of detections(LODs)ranged from 0.100μg/kg to 20000μg/kg and limit of quantitations(LOQs)ranged from 0.300μg/kg to 6.000μg/kg.The LODs meets the detection requirement for the maximum residue limits in practical samples.Meanwhile,the recoveries ranged from 60.2%to 116.6%with associated RSDs ranged from 0.33%to 5.35%in 10 oilseeds matrices and ranged from 61.9%to 116.9%with RSDs ranged from 0.30%to 5.02%in 13 oil matrices.These features do make the UPLC-MSMS an ideal analytical platform for accurate and high throughput analysis of carbamates residues in the complex matrix.展开更多
Immunotherapy represents a promising strategy for cancer treatment that utilizes immune cells or drugs to activate the patient's own immune system and eliminate cancer cells.One of the most exciting advances withi...Immunotherapy represents a promising strategy for cancer treatment that utilizes immune cells or drugs to activate the patient's own immune system and eliminate cancer cells.One of the most exciting advances within this field is the targeting of neoantigens,which are peptides derived from non-synonymous somatic mutations that are found exclusively within cancer cells and absent in normal cells.Although neoantigen-based therapeutic vaccines have not received approval for standard cancer treatment,early clinical trials have yielded encouraging outcomes as standalone monotherapy or when combined with checkpoint inhibitors.Progress made in high-throughput sequencing and bioinformatics have greatly facilitated the precise and efficient identification of neoantigens.Consequently,personalized neoantigen-based vaccines tailored to each patient have been developed that are capable of eliciting a robust and long-lasting immune response which effectively eliminates tumors and prevents recurrences.This review provides a concise overview consolidating the latest clinical advances in neoantigen-based therapeutic vaccines,and also discusses challenges and future perspectives for this innovative approach,particularly emphasizing the potential of neoantigen-based therapeutic vaccines to enhance clinical efficacy against advanced solid tumors.展开更多
Luminescent materials play indispensable roles in many application areas such as lighting,advanced displays,bio-imaging,medical treatments,sensing and detection.Pursuing new luminescent materials with improved or desi...Luminescent materials play indispensable roles in many application areas such as lighting,advanced displays,bio-imaging,medical treatments,sensing and detection.Pursuing new luminescent materials with improved or desired properties is an endless mission,driven by increasing demands of advances in technologies and applications.The traditional trial-and-error method,usually based on intensive experiments,cannot search for new materials in a fast and efficient way,therefore alternative model-or theory-based approaches for materials discovery need to be developed.In this work we overviewed several promising methods for screening and discovering novel luminescent materials,including solid state combinatorial chemistry,chemical unit substitution,single particle diagnosis and high-throughput calculations.These methods,having their own merits and demerits,enable to search for new phosphor materials with interesting properties for white light-emitting diodes(wLEDs)rapidly and efficiently.Finally,data-driven discovery of materials is emphasized as a state-of-art approach.展开更多
为揭示传统固态发酵鲊鱼发酵过程中细菌菌群结构演变规律及自然发酵本质,采用Illmina Hi Seq高通量测序技术分析发酵0~180 d共10个时间点的细菌群落结构的变化,同时对其质构特征、氨基酸组分、脂肪酸组分的变化规律进行分析。结果表明:...为揭示传统固态发酵鲊鱼发酵过程中细菌菌群结构演变规律及自然发酵本质,采用Illmina Hi Seq高通量测序技术分析发酵0~180 d共10个时间点的细菌群落结构的变化,同时对其质构特征、氨基酸组分、脂肪酸组分的变化规律进行分析。结果表明:整个发酵阶段,包含10个门类群、30个纲类群、60个目类群、90个科类群、130个属类群。在发酵初期(0~10 d),细菌群落多样性丰富,相对丰度大于0.1%的科水平达40多个,其优势菌为葡葡萄球菌科(Staphylococcaceae)(48%)、肠球菌科(Enterococcaceae)(9.46%)、餐古菌科(Cenarchaeaceae)(5.57%)、红细菌科(Rhodobacteraceae)(2.12%)。随着发酵时间的延长(10~50 d),芽孢杆菌科(Bacillaceae)相对丰度值由0.017%上升为1.35%,乳杆菌科(Lactobacillaceae)由0.018%上升为0.88%,明串珠菌科(Leuconostocaceae)由0.0%上升为0.61%,链球菌科(Streptococcaceae)由0.002%上升为0.32%,莫拉菌科(Moraxellaceae)由0.006%上升为0.31%;而黄杆菌科(Flavobacteriaceae)、海洋螺菌科(Oceanospirillaceae)、假交替单胞菌科(Pseudoalteromonadaceae)、交替单胞菌科(Alteromonadaceae)等随着发酵时间的延长快速下降,餐古菌科(Cenarchaeaceae)下降为零,其优势菌转变为葡萄球菌、肠球菌和乳酸类细菌。另外,肠杆菌科(Enterobacteriaceae)在发酵50 d后有快速生长的趋势,对发酵有不利影响。同时发现质构指标、氨基酸组分含量、饱和脂肪酸含量随着发酵时间的延长而显下降趋势,并与时间在0.01水平(双侧)上显著负相关。因此,发酵时间控制在一定范围内有利于保证产品质量安全。展开更多
基金This work was supported by the Postdoctoral Science Foundation of Anhui Province(2020B412),the project of Science and Technology Program of State Administration for Market Regulation(2020MK049)the project of Science and Technology Program of Administration for Market Regulation of Anhui Province(2019MK037).
文摘A sensitive and reliable method was developed and validated for the simu1taneous determination of 6 carbamate pesticides and relevant metabolites based on the modified fast QuEChERS(quick,easy,cheap,effective,rugged and safe)method combined with ultra-performance 1iquid chromatography-tandem mass spectrometry(UPLC-MS/MS).The method was also applied in the analysis of 23 commonly consumed oilseeds and oil samples.The sample was extracted with acetonitrile for three times and then the extracted solution was filtered directly though 250 mg precipitated silica adsorbent(PSA)and 250 mg Cis The mobile phase was water(containing 0.1%formic acid)and acetonitrile.The extemal standard protocols were adopted to validate the method in terms of recovery,1inearity,precision,sensitivity,and relative standard deviation(RSD)under the optimized conditions.The linear calibration curves with different ranges were established with R^(2)>0.9973,limit of detections(LODs)ranged from 0.100μg/kg to 20000μg/kg and limit of quantitations(LOQs)ranged from 0.300μg/kg to 6.000μg/kg.The LODs meets the detection requirement for the maximum residue limits in practical samples.Meanwhile,the recoveries ranged from 60.2%to 116.6%with associated RSDs ranged from 0.33%to 5.35%in 10 oilseeds matrices and ranged from 61.9%to 116.9%with RSDs ranged from 0.30%to 5.02%in 13 oil matrices.These features do make the UPLC-MSMS an ideal analytical platform for accurate and high throughput analysis of carbamates residues in the complex matrix.
基金supported by grants from the National Clinical Research Center Cancer Fundthe Haihe Laboratory of Synthetic Biology(22HHSWSS00004)。
文摘Immunotherapy represents a promising strategy for cancer treatment that utilizes immune cells or drugs to activate the patient's own immune system and eliminate cancer cells.One of the most exciting advances within this field is the targeting of neoantigens,which are peptides derived from non-synonymous somatic mutations that are found exclusively within cancer cells and absent in normal cells.Although neoantigen-based therapeutic vaccines have not received approval for standard cancer treatment,early clinical trials have yielded encouraging outcomes as standalone monotherapy or when combined with checkpoint inhibitors.Progress made in high-throughput sequencing and bioinformatics have greatly facilitated the precise and efficient identification of neoantigens.Consequently,personalized neoantigen-based vaccines tailored to each patient have been developed that are capable of eliciting a robust and long-lasting immune response which effectively eliminates tumors and prevents recurrences.This review provides a concise overview consolidating the latest clinical advances in neoantigen-based therapeutic vaccines,and also discusses challenges and future perspectives for this innovative approach,particularly emphasizing the potential of neoantigen-based therapeutic vaccines to enhance clinical efficacy against advanced solid tumors.
基金Project supported by the National Natural Science Foundation of China(51832005)。
文摘Luminescent materials play indispensable roles in many application areas such as lighting,advanced displays,bio-imaging,medical treatments,sensing and detection.Pursuing new luminescent materials with improved or desired properties is an endless mission,driven by increasing demands of advances in technologies and applications.The traditional trial-and-error method,usually based on intensive experiments,cannot search for new materials in a fast and efficient way,therefore alternative model-or theory-based approaches for materials discovery need to be developed.In this work we overviewed several promising methods for screening and discovering novel luminescent materials,including solid state combinatorial chemistry,chemical unit substitution,single particle diagnosis and high-throughput calculations.These methods,having their own merits and demerits,enable to search for new phosphor materials with interesting properties for white light-emitting diodes(wLEDs)rapidly and efficiently.Finally,data-driven discovery of materials is emphasized as a state-of-art approach.