目的构建基于铜死亡相关的铁死亡基因的预后模型,评估其在肝癌患者中的预测能力,并探讨与免疫功能和肿瘤突变负荷的关系。方法使用TCGA(The Cancer Genome Atlas)数据库分析370例肝癌患者的与铜死亡相关的铁死亡基因和生存数据,并将数...目的构建基于铜死亡相关的铁死亡基因的预后模型,评估其在肝癌患者中的预测能力,并探讨与免疫功能和肿瘤突变负荷的关系。方法使用TCGA(The Cancer Genome Atlas)数据库分析370例肝癌患者的与铜死亡相关的铁死亡基因和生存数据,并将数据集随机分为训练组和测试组。通过Lasso回归和Cox模型的构建,筛选出与铜死亡相关的铁死亡基因进行风险模型构建。进行单因素和多因素Cox回归分析来验证风险模型对肝癌预后影响的独立性,并分析风险模型与免疫功能和肿瘤突变负荷的关系。结果在多变量Cox回归数据中选择EIF2S1、G6PD、NRAS这3个与铜死亡相关的铁死亡基因,训练组中EIF2S1、G6PD、NRAS与生存期独立相关(P均<0.05),以该3个基因构建风险模型。Kaplan-Meier分析结果显示,与低风险组比较,高风险组患者的生存期较短(P<0.05),生存率较低(P<0.05)。单因素Cox回归分析显示,铜死亡相关的铁死亡基因构建的风险模型中HR为1.734,95%CI为1.494~2.034,P<0.001。多因素Cox回归分析显示,铜死亡相关的铁死亡基因构建的风险模型中HR为1.661,95%CI为1.397~1.976,P<0.001。ROC曲线分析显示,风险模型预测肝癌患者第1,3,5年生存期的曲线下面积(AUC)分别为0.760,0.663和0.636。运用该风险模型进行Kaplan-Meier生存曲线分析显示,与早期肝癌患者相比,晚期肝癌患者生存期更短(P<0.05),生存率更低(P<0.05)。在高风险组和低风险组中,TypeⅡIFN Response、Parainflammation、APC co-stimulation、CCR、Check-point和MHC classⅠ这6个免疫功能的表达存在统计学差异(P均<0.05)。高肿瘤突变负荷组的肝癌患者生存期明显低于低肿瘤突变负荷组的患者(P<0.05)。结论基于与铜死亡相关的铁死亡基因的风险模型能够有效区分肝癌患者的预后,且铜死亡相关的铁死亡基因与免疫功能和肿瘤突变负荷密切相关。展开更多
Cuprotosis,a new type of cell death,provides great opportunities for the treatment of oral squamous cell carcinoma,as nanocarriers of copper ions can induce cuprotosis and immunogenic death.Here,we studied an editor t...Cuprotosis,a new type of cell death,provides great opportunities for the treatment of oral squamous cell carcinoma,as nanocarriers of copper ions can induce cuprotosis and immunogenic death.Here,we studied an editor that enables production of a nanoparticle“storm”in oral squamous cell carcinoma,maximizing the toxic effect of these particles and reprogramming the tumor microenvironment;as a result,T cells and natural killer(NK)cells can infiltrate the tumor microenvironment to activate an antitumor immune response.On this basis,the editor can be combined with optical therapy to improve patient prognosis.In this study,the metal ratio was regulated in response to the nanocarrier of acid response type.Thus,in the presence of a specific copper ion content,the nanocarrier could change the permeability of the tumor cell membrane.Based on these results,the nanoparticles were cracked in an acidic environment and then released copper ions.Finally,the nanoparticles contributed to cuprotosis and immunogenic death.In addition,the editor could inhibit murine oral cancer 1(MOC1)tumors in C57BL/6 without toxicity.The rate of tumor growth inhibition was as high as approximately 80%.This strategy provides a new idea for immunotherapy.Moreover,it can improve the interaction between immunotherapy and the copper-induced death of oral squamous cell carcinoma.Above all,this study will provide a new opportunity for the effective treatment of oral squamous cell carcinoma.展开更多
BACKGROUND The pyruvate dehydrogenase E1 subunitβ(PDHB)gene which regulates energy metabolism is located in mitochondria.However,few studies have elucidated the role and mechanism of PDHB in different cancers.AIM To ...BACKGROUND The pyruvate dehydrogenase E1 subunitβ(PDHB)gene which regulates energy metabolism is located in mitochondria.However,few studies have elucidated the role and mechanism of PDHB in different cancers.AIM To comprehensive pan-cancer analysis of PDHB was performed based on bioinformatics approaches to explore its tumor diagnostic and prognostic value and tumor immune relevance in cancer.In vitro experiments were performed to examine the biological regulation of PDHB in liver cancer.METHODS Pan-cancer data related to PDHB were obtained from the Cancer Genome Atlas(TCGA)database.Analysis of the gene expression profiles of PDHB was based on TCGA and Genotype Tissue Expression Dataset databases.Cox regression analysis and Kaplan-Meier methods were used to assess the correlation between PDHB expression and survival prognosis in cancer patients.The correlation between PDHB and receiver operating characteristic diagnostic curve,clinicopathological staging,somatic mutation,tumor mutation burden(TMB),microsatellite instability(MSI),DNA methylation,and drug susceptibility in pan-cancer was also analyzed.Various algorithms were used to analyze the correlation between PDHB and immune cell infiltration and tumor chemotaxis environment,as well as the co-expression analysis of PDHB and immune checkpoint(ICP)genes.The expression and functional phenotype of PDHB in single tumor cells were studied by single-cell sequencing,and the functional enrichment analysis of PDHB-related genes was performed.The study also validated the level of mRNA or protein expression of PDHB in several cancers.Finally,in vitro experiments verified the regulatory effect of PDHB on the proliferation,migration,and invasion of liver cancer.RESULTS PDHB was significantly and differently expressed in most cancers.PDHB was significantly associated with prognosis in patients with a wide range of cancers,including kidney renal clear cell carcinoma,kidney renal papillary cell carcinoma,breast invasive carcinoma,and brain lower grade glioma.In some cancers,展开更多
Copper(Cuprum)is an essential trace metal indispensable for the function of numerous enzymatic molecules implicated in cellular metabolism.Emerging evidence has demonstrated the role of copper in angiogenesis and cell...Copper(Cuprum)is an essential trace metal indispensable for the function of numerous enzymatic molecules implicated in cellular metabolism.Emerging evidence has demonstrated the role of copper in angiogenesis and cellular signaling.Moreover,raised copper levels have been detected in hepatocellular carcinoma and other cancers.An inherited or acquired copper imbalance,including inadequately low or excessively high copper levels,as well as inappropriate copper distribution in the body,is implicated in a number of diseases.In addition,a recent groundbreaking study identified a copperinduced type of programmed cell death named cuprotosis,the mechanism of which greatly deferred from that of other known cell death modes.The first part provides an overview of the regulation of copper homeostasis and discusses the underlying mechanisms of cuprotosis.In the second part,the authors focus on the functions of copper in liver diseases and other metabolic disorders,before discussing how this knowledge could contribute to the development of effective targets to treat such diseases.展开更多
Metals are essential components of both micronutrients and macronutrients in living organisms and are involved in a variety of immune processes in the forms of free ions or protein-coupled complexes(metalloproteins).M...Metals are essential components of both micronutrients and macronutrients in living organisms and are involved in a variety of immune processes in the forms of free ions or protein-coupled complexes(metalloproteins).Multiple aspects of the immune system,from the structural and functional control of immune-related proteins to the cellular responses to immunotherapy,could be affected by metals.Therefore,the employment of metal for the regulation of immunity,termed as metalloimmunology,is gaining interest as a prevalent and efficacious approach to combating cancer.However,the manipulation of metalloimmunology using traditional drugs presents several challenges,including limited bioavailability,adverse effects,and a lack of targeting specificity.This review provides an overview of the latest findings in metal and metal-regulatory therapeutic agents for the treatment of cancer.Essential trace metal elements,such as iron,zinc,copper,manganese,magnesium,and calcium,as well as heavy metal drugs and their mechanisms of action,will be discussed with a particular focus on their roles in regulating the tumor-immune interplay.The latest nanotechnology employed in the administration of metal-regulatory drugs and the design concepts for tailored therapeutic interventions will be discussed.These concepts and information offer promising clinical possibilities of modulating cancer immunology by targeting metal metabolism.展开更多
基金the National Key Research and Development Program of China(No.2022YFC2403203-3)Jilin Province Department of Finance(No.jcsz2023481-13)+2 种基金the National Natural Science Foundation of China(Nos.51972003 and 52271127)the Intergovernmental International Co-operation Project of Beijing Municipal Science and Technology Commission(No.Z221100002722004)the 2023 Management Research Project(No.YS040223).
文摘Cuprotosis,a new type of cell death,provides great opportunities for the treatment of oral squamous cell carcinoma,as nanocarriers of copper ions can induce cuprotosis and immunogenic death.Here,we studied an editor that enables production of a nanoparticle“storm”in oral squamous cell carcinoma,maximizing the toxic effect of these particles and reprogramming the tumor microenvironment;as a result,T cells and natural killer(NK)cells can infiltrate the tumor microenvironment to activate an antitumor immune response.On this basis,the editor can be combined with optical therapy to improve patient prognosis.In this study,the metal ratio was regulated in response to the nanocarrier of acid response type.Thus,in the presence of a specific copper ion content,the nanocarrier could change the permeability of the tumor cell membrane.Based on these results,the nanoparticles were cracked in an acidic environment and then released copper ions.Finally,the nanoparticles contributed to cuprotosis and immunogenic death.In addition,the editor could inhibit murine oral cancer 1(MOC1)tumors in C57BL/6 without toxicity.The rate of tumor growth inhibition was as high as approximately 80%.This strategy provides a new idea for immunotherapy.Moreover,it can improve the interaction between immunotherapy and the copper-induced death of oral squamous cell carcinoma.Above all,this study will provide a new opportunity for the effective treatment of oral squamous cell carcinoma.
基金Supported by The 2021 Central-Guided Local Science and Technology Development FundLanzhou COVID-19 Prevention and Control Technology Research Project,No.2020-XG-1Gansu Province Outstanding Graduate Student"Innovation Star"Project,No.2022CXZX-748,No.2022CXZX-746.
文摘BACKGROUND The pyruvate dehydrogenase E1 subunitβ(PDHB)gene which regulates energy metabolism is located in mitochondria.However,few studies have elucidated the role and mechanism of PDHB in different cancers.AIM To comprehensive pan-cancer analysis of PDHB was performed based on bioinformatics approaches to explore its tumor diagnostic and prognostic value and tumor immune relevance in cancer.In vitro experiments were performed to examine the biological regulation of PDHB in liver cancer.METHODS Pan-cancer data related to PDHB were obtained from the Cancer Genome Atlas(TCGA)database.Analysis of the gene expression profiles of PDHB was based on TCGA and Genotype Tissue Expression Dataset databases.Cox regression analysis and Kaplan-Meier methods were used to assess the correlation between PDHB expression and survival prognosis in cancer patients.The correlation between PDHB and receiver operating characteristic diagnostic curve,clinicopathological staging,somatic mutation,tumor mutation burden(TMB),microsatellite instability(MSI),DNA methylation,and drug susceptibility in pan-cancer was also analyzed.Various algorithms were used to analyze the correlation between PDHB and immune cell infiltration and tumor chemotaxis environment,as well as the co-expression analysis of PDHB and immune checkpoint(ICP)genes.The expression and functional phenotype of PDHB in single tumor cells were studied by single-cell sequencing,and the functional enrichment analysis of PDHB-related genes was performed.The study also validated the level of mRNA or protein expression of PDHB in several cancers.Finally,in vitro experiments verified the regulatory effect of PDHB on the proliferation,migration,and invasion of liver cancer.RESULTS PDHB was significantly and differently expressed in most cancers.PDHB was significantly associated with prognosis in patients with a wide range of cancers,including kidney renal clear cell carcinoma,kidney renal papillary cell carcinoma,breast invasive carcinoma,and brain lower grade glioma.In some cancers,
基金Talent Development Plan for Beijing High-level Public Health Technical Personnel Project,Grant/Award Number:2022-2-014。
文摘Copper(Cuprum)is an essential trace metal indispensable for the function of numerous enzymatic molecules implicated in cellular metabolism.Emerging evidence has demonstrated the role of copper in angiogenesis and cellular signaling.Moreover,raised copper levels have been detected in hepatocellular carcinoma and other cancers.An inherited or acquired copper imbalance,including inadequately low or excessively high copper levels,as well as inappropriate copper distribution in the body,is implicated in a number of diseases.In addition,a recent groundbreaking study identified a copperinduced type of programmed cell death named cuprotosis,the mechanism of which greatly deferred from that of other known cell death modes.The first part provides an overview of the regulation of copper homeostasis and discusses the underlying mechanisms of cuprotosis.In the second part,the authors focus on the functions of copper in liver diseases and other metabolic disorders,before discussing how this knowledge could contribute to the development of effective targets to treat such diseases.
基金supported by grants from the National Key R&D Program of China(Nos.2021YFA1201100,and 2022YFA1206100)the National Natural Science Foundation of China(Nos.32271449,32201158,and 51773188)+2 种基金CAS Project for Young Scientists in Basic Research(No.YSBR-036)Key Project of Natural Science Foundation of Shandong Province(No.ZR2020KE016)Shandong Provincial Key Research and Development Program(Major Scientific and Technological Innovation Project,No.2022CXGC010505).
文摘Metals are essential components of both micronutrients and macronutrients in living organisms and are involved in a variety of immune processes in the forms of free ions or protein-coupled complexes(metalloproteins).Multiple aspects of the immune system,from the structural and functional control of immune-related proteins to the cellular responses to immunotherapy,could be affected by metals.Therefore,the employment of metal for the regulation of immunity,termed as metalloimmunology,is gaining interest as a prevalent and efficacious approach to combating cancer.However,the manipulation of metalloimmunology using traditional drugs presents several challenges,including limited bioavailability,adverse effects,and a lack of targeting specificity.This review provides an overview of the latest findings in metal and metal-regulatory therapeutic agents for the treatment of cancer.Essential trace metal elements,such as iron,zinc,copper,manganese,magnesium,and calcium,as well as heavy metal drugs and their mechanisms of action,will be discussed with a particular focus on their roles in regulating the tumor-immune interplay.The latest nanotechnology employed in the administration of metal-regulatory drugs and the design concepts for tailored therapeutic interventions will be discussed.These concepts and information offer promising clinical possibilities of modulating cancer immunology by targeting metal metabolism.
