Hepatic ischemia-reperfusion injury(HIRI)is the cause of postoperative hepatic dysfunction and failure,and even death.As an important biological effector molecule,hydrogen sulfide(H_(2)S)of mitochondria as a gasotrans...Hepatic ischemia-reperfusion injury(HIRI)is the cause of postoperative hepatic dysfunction and failure,and even death.As an important biological effector molecule,hydrogen sulfide(H_(2)S)of mitochondria as a gasotransmitter that is usually used to protect against acute HIRI injury.However,the exact relationship between HIRI and mitochondrial H_(2)S remains tangled due to the lack of an effective analytical method.Herein,we have fabricated a mitochondria-targeted H_(2)S-activatable fluorogenic probe(Mito-GW)to explore the stability of mitochondrial H_(2)S and track the changes of mitochondrial H_(2)S during the HIRI.By virtue of pyridinium electropositivity and its amphiphilicity,Mito-GW could accumulate in mitochondria.It goes through an analyte-prompted immolation when reacts with H_(2)S,resulting in the releasing of the fluorophore(GW).Therefore,the extent of Mito-GW conversion to GW can be used to evaluate the changes of mitochondrial H_(2)S level in living cells and tissues.As proof-of-principle,we have used MitoGW to demonstrate the mitochondria H_(2)S-levels increase and then decrease during HIRI in vitro and in vivo.Our research highlights the tremendous potential of Mito-GW as a mitochondrial H_(2)S fluorogenic probe in elucidating the pathogenesis of HIRI,providing a powerful tool for promoting future research on hepatology.展开更多
建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉...建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉-1(2H)-酮衍生物,最高产率可达到83%。该合成路径具有底物适用范围广、经济实用等特点,为3,4-二氢异喹啉-1(2H)-酮衍生物合成提供了一种经济简便的方法。展开更多
为建立花生致敏蛋白Ara h 2双抗夹心酶联免疫吸附试验(ELISA)检测方法,本研究基于所制备的抗体,采用双抗体夹心检测模式,以Ara h 2鼠源单克隆抗体作为捕获抗体、兔源多克隆抗体作为检测抗体,并通过棋盘法优化抗体工作浓度,对该方法的灵...为建立花生致敏蛋白Ara h 2双抗夹心酶联免疫吸附试验(ELISA)检测方法,本研究基于所制备的抗体,采用双抗体夹心检测模式,以Ara h 2鼠源单克隆抗体作为捕获抗体、兔源多克隆抗体作为检测抗体,并通过棋盘法优化抗体工作浓度,对该方法的灵敏度、准确度、精密度和特异性进行鉴定。结果表明,建立的双抗夹心ELISA检测方法对Ara h 2的检出限为5.04 ng·mL^(-1),线性范围为15.63~1 000 ng·mL^(-1),添加回收率为80.12%~96.03%,批内和批间变异系数均小于10%,且特异性良好、与其他常见食物过敏原无交叉反应。本研究可为致敏蛋白Ara h 2检测提供一种快速高效的方法。展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.22077101,22004099)the Joint Research Funds of Department of Science&Technology of Shaanxi Province and Northwestern Polytechnical University(Nos.2020GXLH-Z-008,2020GXLH-Z-021,2020GXLH-Z-023)+4 种基金Natural Science Foundation of Shaanxi Province(No.2022JM-130)The Natural Science Foundation of Ningbo(Nos.202003N4049,202003N4065)the Open Project Program of Wuhan National Laboratory for Optoelectronics(Nos.2020WNLOKF023,2022WNLOKF009)Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University(No.CX2022034)Innovation Capability Support Program of Shaanxi(No.2023-CX-PT-23)。
文摘Hepatic ischemia-reperfusion injury(HIRI)is the cause of postoperative hepatic dysfunction and failure,and even death.As an important biological effector molecule,hydrogen sulfide(H_(2)S)of mitochondria as a gasotransmitter that is usually used to protect against acute HIRI injury.However,the exact relationship between HIRI and mitochondrial H_(2)S remains tangled due to the lack of an effective analytical method.Herein,we have fabricated a mitochondria-targeted H_(2)S-activatable fluorogenic probe(Mito-GW)to explore the stability of mitochondrial H_(2)S and track the changes of mitochondrial H_(2)S during the HIRI.By virtue of pyridinium electropositivity and its amphiphilicity,Mito-GW could accumulate in mitochondria.It goes through an analyte-prompted immolation when reacts with H_(2)S,resulting in the releasing of the fluorophore(GW).Therefore,the extent of Mito-GW conversion to GW can be used to evaluate the changes of mitochondrial H_(2)S level in living cells and tissues.As proof-of-principle,we have used MitoGW to demonstrate the mitochondria H_(2)S-levels increase and then decrease during HIRI in vitro and in vivo.Our research highlights the tremendous potential of Mito-GW as a mitochondrial H_(2)S fluorogenic probe in elucidating the pathogenesis of HIRI,providing a powerful tool for promoting future research on hepatology.
文摘建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉-1(2H)-酮衍生物,最高产率可达到83%。该合成路径具有底物适用范围广、经济实用等特点,为3,4-二氢异喹啉-1(2H)-酮衍生物合成提供了一种经济简便的方法。
文摘为建立花生致敏蛋白Ara h 2双抗夹心酶联免疫吸附试验(ELISA)检测方法,本研究基于所制备的抗体,采用双抗体夹心检测模式,以Ara h 2鼠源单克隆抗体作为捕获抗体、兔源多克隆抗体作为检测抗体,并通过棋盘法优化抗体工作浓度,对该方法的灵敏度、准确度、精密度和特异性进行鉴定。结果表明,建立的双抗夹心ELISA检测方法对Ara h 2的检出限为5.04 ng·mL^(-1),线性范围为15.63~1 000 ng·mL^(-1),添加回收率为80.12%~96.03%,批内和批间变异系数均小于10%,且特异性良好、与其他常见食物过敏原无交叉反应。本研究可为致敏蛋白Ara h 2检测提供一种快速高效的方法。
