Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional ca...Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional catalyst of amorphous MoS_(x)(a-MoS_(x))with 3D layer-by-layer superstructure was synthesized by assembling basic active units[Mo_(3)S_(13)]^(2-)of MoS_(2).The large interlayer spacing and high exposure of active sites render a-MoS_(x)to have excellent synergy of adsorption and photo-assisted PMS activation for tetracycline(TC)degradation.Experiments and DFT calculation show that TC can be efficiently enriched on a-MoS_(x)by pore filling,π-πinteraction,hydrogen bonding and high adsorption energy.Subsequently,PMS can be quickly activated through electron transfer with a-MoS_(x),resulting in high TC degradation efficiency of 96.6%within 20 min.In addition,the synergistic mechanism of adsorption and photo-assisted PMS activation was explored,and the degradation pathway of TC was expounded.This work is inspirational for constructing bifunctional catalysts with superior synergistic adsorption and catalytic capabilities to remove refractory organic pollutants in water.展开更多
The immunosuppressive microenvironment plays an important role in tumor progression and immunotherapy responses.Golgi membrane protein 1(GOLM1)is correlated to hepatocellular carcinoma(HCC)progression and metastasis.H...The immunosuppressive microenvironment plays an important role in tumor progression and immunotherapy responses.Golgi membrane protein 1(GOLM1)is correlated to hepatocellular carcinoma(HCC)progression and metastasis.However,little is known about the role of GOLM1 in regulating the immunosuppressive environment and its impact on immunotherapeutic efficacy in HCC.In this study,GOLM1 was positively correlated with infiltrating tumor-associated macrophages(TAMs)expressed high levels of programmed death-ligand 1(PD-L1)and CD8^(+)T cell suppression in HCC tissues.Both gain-and loss-of-function studies determined a close correlation between GOLM1 and immunosuppression.In the mechanism,GOLM1 promoted COP9 signalosome 5-mediated PD-L1 deubiquitination in HCC cells and increased the transport of PD-L1 into exosomes via suppression of Rab27b expression.Furthermore,co-culture with exosomes derived from HCC cells upregulated the expression of PD-L1 on macrophages.Zoledronic acid in combination with anti-PD-L1 therapy reduced PD-L1^(+)TAMs infiltration and alleviated CD8^(+)T cell suppression,resulting in tumor growth inhibition in the mouse HCC model.Together,our study unveils a mechanism by which GOLM1 induces CD8^(+)T cells suppression through promoting PD-L1 stabilization and transporting PD-L1 into TAMs with exosome dependent.Targeting PD-L1^(+)TAM could be a novel strategy to enhance the efficacy of anti-PD-L1 therapy in HCC.展开更多
Fucoxanthin(FX),a natural compound derived from marine algae,and FX-based nanoparticles(FZ)were investigated for their potential in regulating glucose and lipid metabolism.Gavage interventions with FX,FZ,and zein hydr...Fucoxanthin(FX),a natural compound derived from marine algae,and FX-based nanoparticles(FZ)were investigated for their potential in regulating glucose and lipid metabolism.Gavage interventions with FX,FZ,and zein hydrolysate(ZH)were administered to obese mice,resulting in significant outcomes.These interventions led to variations in growth rates,reduced blood glucose levels,improved lipid profiles,and ameliorated liver pathology.Our mRNA expression analysis revealed modulation of key genes involved in glucose metabolism.Gut analysis,including short-chain fatty acid detection and 16S rRNA gene sequencing,provided insights into gut microbiota modulation.Notably,differences observed in vivo between FX and FZ were attributed to their distinct release rates during in vitro digestion in the stomach and intestine.This comprehensive study validates our methods,modeling,and metabolic parameter determination,reinforcing the significance of our results.In conclusion,our findings highlight the promising potential of FX-encapsulated interventions in modulating metabolic pathways.Furthermore,they emphasize the crucial role of gut microbiota dynamics in the strategic mitigation of disorders associated with obesity.展开更多
基金supported by the National Natural Science Foundation of China(Nos.52370073,12274115)Program for Science and Technology Innovation Team in Universities of Henan Province(No.24IRTSTHN017)+3 种基金Natural Science Foundation of Henan Province(No.212300410336)Program for Science and Technology Innovation Talent in Universities of Henan Province(No.23HASTIT027)Key Scientific and Technological Project of Henan Province(No.222102320188)Key Project of Science and Technology Research of Henan Provincial Department of Education(No.21A430008)。
文摘Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional catalyst of amorphous MoS_(x)(a-MoS_(x))with 3D layer-by-layer superstructure was synthesized by assembling basic active units[Mo_(3)S_(13)]^(2-)of MoS_(2).The large interlayer spacing and high exposure of active sites render a-MoS_(x)to have excellent synergy of adsorption and photo-assisted PMS activation for tetracycline(TC)degradation.Experiments and DFT calculation show that TC can be efficiently enriched on a-MoS_(x)by pore filling,π-πinteraction,hydrogen bonding and high adsorption energy.Subsequently,PMS can be quickly activated through electron transfer with a-MoS_(x),resulting in high TC degradation efficiency of 96.6%within 20 min.In addition,the synergistic mechanism of adsorption and photo-assisted PMS activation was explored,and the degradation pathway of TC was expounded.This work is inspirational for constructing bifunctional catalysts with superior synergistic adsorption and catalytic capabilities to remove refractory organic pollutants in water.
基金This work was supported by grants from the National Key Project for Infectious Diseases of China(2017ZX10203207)the National Natural Science Foundation of China(81672848,81972703,82072696).
文摘The immunosuppressive microenvironment plays an important role in tumor progression and immunotherapy responses.Golgi membrane protein 1(GOLM1)is correlated to hepatocellular carcinoma(HCC)progression and metastasis.However,little is known about the role of GOLM1 in regulating the immunosuppressive environment and its impact on immunotherapeutic efficacy in HCC.In this study,GOLM1 was positively correlated with infiltrating tumor-associated macrophages(TAMs)expressed high levels of programmed death-ligand 1(PD-L1)and CD8^(+)T cell suppression in HCC tissues.Both gain-and loss-of-function studies determined a close correlation between GOLM1 and immunosuppression.In the mechanism,GOLM1 promoted COP9 signalosome 5-mediated PD-L1 deubiquitination in HCC cells and increased the transport of PD-L1 into exosomes via suppression of Rab27b expression.Furthermore,co-culture with exosomes derived from HCC cells upregulated the expression of PD-L1 on macrophages.Zoledronic acid in combination with anti-PD-L1 therapy reduced PD-L1^(+)TAMs infiltration and alleviated CD8^(+)T cell suppression,resulting in tumor growth inhibition in the mouse HCC model.Together,our study unveils a mechanism by which GOLM1 induces CD8^(+)T cells suppression through promoting PD-L1 stabilization and transporting PD-L1 into TAMs with exosome dependent.Targeting PD-L1^(+)TAM could be a novel strategy to enhance the efficacy of anti-PD-L1 therapy in HCC.
文摘Fucoxanthin(FX),a natural compound derived from marine algae,and FX-based nanoparticles(FZ)were investigated for their potential in regulating glucose and lipid metabolism.Gavage interventions with FX,FZ,and zein hydrolysate(ZH)were administered to obese mice,resulting in significant outcomes.These interventions led to variations in growth rates,reduced blood glucose levels,improved lipid profiles,and ameliorated liver pathology.Our mRNA expression analysis revealed modulation of key genes involved in glucose metabolism.Gut analysis,including short-chain fatty acid detection and 16S rRNA gene sequencing,provided insights into gut microbiota modulation.Notably,differences observed in vivo between FX and FZ were attributed to their distinct release rates during in vitro digestion in the stomach and intestine.This comprehensive study validates our methods,modeling,and metabolic parameter determination,reinforcing the significance of our results.In conclusion,our findings highlight the promising potential of FX-encapsulated interventions in modulating metabolic pathways.Furthermore,they emphasize the crucial role of gut microbiota dynamics in the strategic mitigation of disorders associated with obesity.
