Objective: The incidence of after-cataracts [also known as posterior capsular opacification (PCO)] is between 30% and 50% three years following cataract surgery. Suppressing the proliferation of lens epithelial cells ...Objective: The incidence of after-cataracts [also known as posterior capsular opacification (PCO)] is between 30% and 50% three years following cataract surgery. Suppressing the proliferation of lens epithelial cells (LECs) is a primary goal in preventing PCO. Here, we investigated the proteomic regulation of the inhibitory effects of curcumin (Cur) on the proliferation of human lens epithelial B3 (HLE-B3) cells. Methods: Recombinant human basic fibroblast growth factor (rhbFGF) was used to induce proliferation of HLE-B3 cells, which were incubated with 20 mg/L Cur in a CO2 incubator for 24 h. Results: We found that the absorbance (A) value of rhbFGF group was significantly higher than the A value of the control group. Furthermore, the A value of the Cur group was significantly lower com- pared to the rhbFGF group, with an inhibition of 53.7%. Five different protein spots were obtained from proliferative HLE-B3 cells induced by rhbFGF. Eight different protein spots were obtained in HLE-B3 cells incubated with Cur. There were the common variational protein spots at mass/charge (m/z) ratios of 8 093 and 13 767 between rhbFGF group and control group as well as between the Cur group and rhbFGF group. Conclusions: These results show that Cur effectively inhibited HLE-B3 cell proliferation induced by rhbFGF. The protein spots at m/z of 8 093 and 13 767 may be the targets of Cur-induced inhibition of HLE-B3 cell proliferation. Cur may be a reliable and effective drug for pre- vention and treatment of polymerase chain reaction (PCR).展开更多
AIM: To investigate the protective effects of the natural medicinal monomer ecdysterone(ECR) with estrogenic activity against oxidative damage in human lens epithelial cells B3(HLE-B3) caused by hydrogen peroxide 21(H...AIM: To investigate the protective effects of the natural medicinal monomer ecdysterone(ECR) with estrogenic activity against oxidative damage in human lens epithelial cells B3(HLE-B3) caused by hydrogen peroxide 21(H2 O2) and to pursue the possible mitochondrial proteomic regularity of the protective effects. · METHODS: HLE-B3 cells were treated with H2O2(300μmol/L),β-estuarial(E2; 10-8mol/L) and H2 O2,ECR(10-6mol/L) and H2 O2,or left untreated. Altered expression of all mitochondrial proteins was analyzed by protein array and surface-enhanced laser desorption ionization time of flight mass spectrometry(SELDI-TOF-MS). The mass/charge(M/Z) ratios of each peak were tested by the Kruskal-Wallis rank sum test,and the protein peak value of the M/Z ratio for each treatment by pair comparison was analyzed with the Nemenyi test. ·RESULTS: H2O2 up-regulated expression of two protein spots(with M/Z of 6 532 and 6 809). When E2 mitigated the oxidative damage,the expression of one protein spot(M/Z 6 532) was down-regulated. In contrast,ECR downregulated both of protein spots(M/Z 6 532 and 6 809). · CONCLUSION: ECR could effectively inhibite H2O2 induced oxidative damage in HLE-B3 cells. The protein spot at M/Z of 6 532 might be the target spot of ECR against oxidative damage induced by H2 O2.展开更多
Borylative cyclization of E-3-arylallyl carbamoyl chlorides is achieved through copper catalyzed intramolecular carboboration with B_(2)pin_(2).2-Aryl-3-boryl-γ-lactams are formed with exclusive cisdiastereoselectivi...Borylative cyclization of E-3-arylallyl carbamoyl chlorides is achieved through copper catalyzed intramolecular carboboration with B_(2)pin_(2).2-Aryl-3-boryl-γ-lactams are formed with exclusive cisdiastereoselectivity.CuBr-Dppp combination gives the best outcomes.The substrate scope is profiled.展开更多
Background:Diabetic cataract is a common complication and a lens disorder in diabetes.Moreover,Dendrobium officinale polysaccharide(DOP)is found to alleviate diabetes complications.Consequently,microRNA-125b and mitog...Background:Diabetic cataract is a common complication and a lens disorder in diabetes.Moreover,Dendrobium officinale polysaccharide(DOP)is found to alleviate diabetes complications.Consequently,microRNA-125b and mitogen-activated protein kinase signaling pathways play significant roles in diabetes.However,the mechanism and the effect of DOP on diabetic cataract remains unknown.Methods:Wistar male rats were randomly assigned to the control,model,and DOP groups.Diabetes was induced with streptozotocin.Furthermore,DOP was orally given for 12 weeks.The Lens Opacities Classification System III was used to evaluate lens opacity by slit-lamp microscope.The lens was then harvested for testing the mRNA expression of microRNA-125b,ERK1,ERK2,Raf and Ras using reverse transcription-polymerase chain reaction.The protein expression of ERK1,ERK2,Raf,and Ras was detected using the Western blot analysis.The targets of microRNA-125b were predicted in miRWalk 2.0.These targets were obtained from the Kyoto Encyclopedia of Genes and Genomes pathway.Results:The lens opacities of the rats in the control group were almost at C0N0.Moreover,the majority of the lens opacities in the model group were C3 to C4 and N1 to N2,and were mostly at C1 to C2 and N0 to N1 in the DOP group.The difference was statistically significant(P<0.05).Furthermore,the microRNA-125b expression in the model group is significantly higher compared with the control group.Conversely,the microRNA-125b expression in the DOP group is significantly decreased(all P<0.05).The mRNA expression of ERK1,ERK2,Raf,and Ras in the model groups were upregulated compared with those of the control group.However,the ERK1 and Raf mRNA expressions of the DOP group were lower compared with the model group(all P<0.05).The protein expression of ERK1,Raf,and Ras in the model group was significantly increased compared with those of the control group.The protein expression of ERK1,Raf,and Ras in the DOP group was significantly lower compared with the model group(all P<0.05).Moreover,3,378 genes of the microRNA-125b target were gained from the miRWalk.After Kyoto Encyclopedia of Genes and Genomes pathways analysis in Gene Set Enrichment Analysis,246 items were gained including Ras(rno04014)and mitogen-activated protein kinase(rno04010)signaling pathways.A positive correlation exists between microRNA-125b and mRNA expression of ERK1,ERK2,Raf and Ras(r=0.940,0.841,0.666,and 0.768;all P<0.05).Conclusion:DOP can alleviate the severity of the opacity of the lens in diabetic cataract rats via microRNA-125b and mitogen-activated protein kinase signaling pathways.Thus,microRNA-125b has something to do with the mitogen-activated protein kinase signaling pathway.展开更多
基金Project(No.wzzb0605) supported by the Traditional Chinese Medicine Research Fund of the Department of Health of Fujian Province,China
文摘Objective: The incidence of after-cataracts [also known as posterior capsular opacification (PCO)] is between 30% and 50% three years following cataract surgery. Suppressing the proliferation of lens epithelial cells (LECs) is a primary goal in preventing PCO. Here, we investigated the proteomic regulation of the inhibitory effects of curcumin (Cur) on the proliferation of human lens epithelial B3 (HLE-B3) cells. Methods: Recombinant human basic fibroblast growth factor (rhbFGF) was used to induce proliferation of HLE-B3 cells, which were incubated with 20 mg/L Cur in a CO2 incubator for 24 h. Results: We found that the absorbance (A) value of rhbFGF group was significantly higher than the A value of the control group. Furthermore, the A value of the Cur group was significantly lower com- pared to the rhbFGF group, with an inhibition of 53.7%. Five different protein spots were obtained from proliferative HLE-B3 cells induced by rhbFGF. Eight different protein spots were obtained in HLE-B3 cells incubated with Cur. There were the common variational protein spots at mass/charge (m/z) ratios of 8 093 and 13 767 between rhbFGF group and control group as well as between the Cur group and rhbFGF group. Conclusions: These results show that Cur effectively inhibited HLE-B3 cell proliferation induced by rhbFGF. The protein spots at m/z of 8 093 and 13 767 may be the targets of Cur-induced inhibition of HLE-B3 cell proliferation. Cur may be a reliable and effective drug for pre- vention and treatment of polymerase chain reaction (PCR).
基金Supported by Fujian Province Health Department Fund(No.2009-1-30)Fujian Province Department of Education Issues(No.JA10176)
文摘AIM: To investigate the protective effects of the natural medicinal monomer ecdysterone(ECR) with estrogenic activity against oxidative damage in human lens epithelial cells B3(HLE-B3) caused by hydrogen peroxide 21(H2 O2) and to pursue the possible mitochondrial proteomic regularity of the protective effects. · METHODS: HLE-B3 cells were treated with H2O2(300μmol/L),β-estuarial(E2; 10-8mol/L) and H2 O2,ECR(10-6mol/L) and H2 O2,or left untreated. Altered expression of all mitochondrial proteins was analyzed by protein array and surface-enhanced laser desorption ionization time of flight mass spectrometry(SELDI-TOF-MS). The mass/charge(M/Z) ratios of each peak were tested by the Kruskal-Wallis rank sum test,and the protein peak value of the M/Z ratio for each treatment by pair comparison was analyzed with the Nemenyi test. ·RESULTS: H2O2 up-regulated expression of two protein spots(with M/Z of 6 532 and 6 809). When E2 mitigated the oxidative damage,the expression of one protein spot(M/Z 6 532) was down-regulated. In contrast,ECR downregulated both of protein spots(M/Z 6 532 and 6 809). · CONCLUSION: ECR could effectively inhibite H2O2 induced oxidative damage in HLE-B3 cells. The protein spot at M/Z of 6 532 might be the target spot of ECR against oxidative damage induced by H2 O2.
基金the National Natural Science Foundation of China(No.21672027)for financial supportsupported by High-Level Entrepreneurial Talent Team of Jiangsu Province(No.2017-37)。
文摘Borylative cyclization of E-3-arylallyl carbamoyl chlorides is achieved through copper catalyzed intramolecular carboboration with B_(2)pin_(2).2-Aryl-3-boryl-γ-lactams are formed with exclusive cisdiastereoselectivity.CuBr-Dppp combination gives the best outcomes.The substrate scope is profiled.
基金supported by Fujian Provincial Natural Science Foundation Project(No.2019J01483)Fujian Provincial Health and Health Commission Medical Innovation Project(No.2018-CXB-15)of China。
文摘Background:Diabetic cataract is a common complication and a lens disorder in diabetes.Moreover,Dendrobium officinale polysaccharide(DOP)is found to alleviate diabetes complications.Consequently,microRNA-125b and mitogen-activated protein kinase signaling pathways play significant roles in diabetes.However,the mechanism and the effect of DOP on diabetic cataract remains unknown.Methods:Wistar male rats were randomly assigned to the control,model,and DOP groups.Diabetes was induced with streptozotocin.Furthermore,DOP was orally given for 12 weeks.The Lens Opacities Classification System III was used to evaluate lens opacity by slit-lamp microscope.The lens was then harvested for testing the mRNA expression of microRNA-125b,ERK1,ERK2,Raf and Ras using reverse transcription-polymerase chain reaction.The protein expression of ERK1,ERK2,Raf,and Ras was detected using the Western blot analysis.The targets of microRNA-125b were predicted in miRWalk 2.0.These targets were obtained from the Kyoto Encyclopedia of Genes and Genomes pathway.Results:The lens opacities of the rats in the control group were almost at C0N0.Moreover,the majority of the lens opacities in the model group were C3 to C4 and N1 to N2,and were mostly at C1 to C2 and N0 to N1 in the DOP group.The difference was statistically significant(P<0.05).Furthermore,the microRNA-125b expression in the model group is significantly higher compared with the control group.Conversely,the microRNA-125b expression in the DOP group is significantly decreased(all P<0.05).The mRNA expression of ERK1,ERK2,Raf,and Ras in the model groups were upregulated compared with those of the control group.However,the ERK1 and Raf mRNA expressions of the DOP group were lower compared with the model group(all P<0.05).The protein expression of ERK1,Raf,and Ras in the model group was significantly increased compared with those of the control group.The protein expression of ERK1,Raf,and Ras in the DOP group was significantly lower compared with the model group(all P<0.05).Moreover,3,378 genes of the microRNA-125b target were gained from the miRWalk.After Kyoto Encyclopedia of Genes and Genomes pathways analysis in Gene Set Enrichment Analysis,246 items were gained including Ras(rno04014)and mitogen-activated protein kinase(rno04010)signaling pathways.A positive correlation exists between microRNA-125b and mRNA expression of ERK1,ERK2,Raf and Ras(r=0.940,0.841,0.666,and 0.768;all P<0.05).Conclusion:DOP can alleviate the severity of the opacity of the lens in diabetic cataract rats via microRNA-125b and mitogen-activated protein kinase signaling pathways.Thus,microRNA-125b has something to do with the mitogen-activated protein kinase signaling pathway.
