Ischemic stroke is a major cause of morbidity and mortality,and currently there is no effective treatment.The family of protein kinase C(PKCs)could phosphorylate serine or threonine residues of its substrate proteins ...Ischemic stroke is a major cause of morbidity and mortality,and currently there is no effective treatment.The family of protein kinase C(PKCs)could phosphorylate serine or threonine residues of its substrate proteins and play a key role in the ischemia/reperfusion injury.Autophagy is essential for maintaining cell homeostasis under physiological condition and acts as a double-edged sword in the process of ischemic neuronal death.In this article,we reviewed the PKCs isoform-specific signaling pathways and PKC-modulated autophagy in ischemic stroke.展开更多
Objective To investigate the interaction between fragile histamine triad (FHIT) and protein kinase C alpha (PKCα) in human non-small cell lung cancer tissues. Methods FHIT and PKCα double positive samples were scree...Objective To investigate the interaction between fragile histamine triad (FHIT) and protein kinase C alpha (PKCα) in human non-small cell lung cancer tissues. Methods FHIT and PKCα double positive samples were screened by immunohistochemical staining from 13 human non-small cell lung cancer tissues. Co-immunoprecipitation was performed by using anti-FHIT and anti-PKCα. The immune precipitate was analyzed by SDS-PAGE and Western blot. Results Immune precipitate staining detection showed that 3 samples out of the 13 cases were double positive for FHIT and PKCα. FHIT protein was present in the immune precipitate of anti-PKCα while there was PKCα in the immune precipitate of anti-FHITmAb. Conclusion FHIT and PKCα exist as a complex in human non-small cell lung cancer tissues, which will provide a new route for studying the pathogenesis and immunotherapy of human non-small cell lung cancer.展开更多
Objective:To analyze the expression of protein kinase C delta(PKCδ,PRKCD)in Liver hepatocellular carcinoma and its clinical significance based on bioinformatics,in order to provide a new direction for the study of th...Objective:To analyze the expression of protein kinase C delta(PKCδ,PRKCD)in Liver hepatocellular carcinoma and its clinical significance based on bioinformatics,in order to provide a new direction for the study of therapeutic targets for Liver hepatocellular carcinoma.Methods:The PRKCD gene expression data and patient clinical information data in Liver hepatocellular carcinoma tissues and adjacent tissues were downloaded from The TCGA(The Cancer Genome Atlas)and UCSC Xena databases.The mRNA expression of PRKCD in Liver hepatocellular carcinoma was analyzed,and the protein expression of PRKCD in Liver hepatocellular carcinoma was analyzed by Human Protein Atlas(HPA)databases.Furthermore,its relationship with clinicopathological features and prognosis in patients with Liver hepatocellular carcinoma was analyzed.GSEA enrichment analysis were carried out for PRKCD in Liver hepatocellular carcinoma.Finally,the causes of changes in PRKCD expression were analyzed from the perspective of genetic and epigenetics based on collated liver hepatocellular carcinoma data.Results:Both the mRNA and protein expression level of PRKCD gene in Liver hepatocellular carcinoma tissues was significantly higher than that in adjacent tissues.Its expression level was correlated with TNM stage,Histologic grade,Alpha fetoprotein(AFP)and Living status in clinicopathological features,and its expression level has certain clinical diagnostic accuracy.Kaplan-Meier analysis showed that the prognosis of patients with low PRKCD expression was significantly better than that with high PRKCD expression.Univariate and multivariate Cox regression analysis showed that PRKCD was an independent prognostic factor in patients with Liver hepatocellular carcinoma,and it was also found that the risk ratio of TNM stage III and stage IV survival curve(HR)was significantly greater than that of stage I and stage II.GSEA analysis showed that it was enriched in cell cycles and DNA replication,and was positively correlated with PRKCD.Enrichment analysis found that PRKCD is mainly involved in the chemokine signaling pathway,NOD-like receptor signaling pathway,PPAR signaling pathway,adipocytokine signaling pathway and T-cell receptor signaling pathway.Finally,through genetic and epigenetic analysis,it is found that the increase in the number of copies of genes will increase the expression level of PRKCD,and the methylation level is negatively correlated with the expression level of PRKCD.Conclusion:PRKCD gene is upregulated in Liver hepatocellular carcinoma tissues,and its overexpression level is closely related to patient poor prognosis.展开更多
文摘Ischemic stroke is a major cause of morbidity and mortality,and currently there is no effective treatment.The family of protein kinase C(PKCs)could phosphorylate serine or threonine residues of its substrate proteins and play a key role in the ischemia/reperfusion injury.Autophagy is essential for maintaining cell homeostasis under physiological condition and acts as a double-edged sword in the process of ischemic neuronal death.In this article,we reviewed the PKCs isoform-specific signaling pathways and PKC-modulated autophagy in ischemic stroke.
基金supported by the Scientific and Technological Development Research Project of Shaanxi Province (No.2005k09-G1)
文摘Objective To investigate the interaction between fragile histamine triad (FHIT) and protein kinase C alpha (PKCα) in human non-small cell lung cancer tissues. Methods FHIT and PKCα double positive samples were screened by immunohistochemical staining from 13 human non-small cell lung cancer tissues. Co-immunoprecipitation was performed by using anti-FHIT and anti-PKCα. The immune precipitate was analyzed by SDS-PAGE and Western blot. Results Immune precipitate staining detection showed that 3 samples out of the 13 cases were double positive for FHIT and PKCα. FHIT protein was present in the immune precipitate of anti-PKCα while there was PKCα in the immune precipitate of anti-FHITmAb. Conclusion FHIT and PKCα exist as a complex in human non-small cell lung cancer tissues, which will provide a new route for studying the pathogenesis and immunotherapy of human non-small cell lung cancer.
基金Heilongjiang Provincial Colleges and Universities Basic Research Business Expensesfor Excellent Innovation Team Construction Project(No.2019-KYWF-1334)。
文摘Objective:To analyze the expression of protein kinase C delta(PKCδ,PRKCD)in Liver hepatocellular carcinoma and its clinical significance based on bioinformatics,in order to provide a new direction for the study of therapeutic targets for Liver hepatocellular carcinoma.Methods:The PRKCD gene expression data and patient clinical information data in Liver hepatocellular carcinoma tissues and adjacent tissues were downloaded from The TCGA(The Cancer Genome Atlas)and UCSC Xena databases.The mRNA expression of PRKCD in Liver hepatocellular carcinoma was analyzed,and the protein expression of PRKCD in Liver hepatocellular carcinoma was analyzed by Human Protein Atlas(HPA)databases.Furthermore,its relationship with clinicopathological features and prognosis in patients with Liver hepatocellular carcinoma was analyzed.GSEA enrichment analysis were carried out for PRKCD in Liver hepatocellular carcinoma.Finally,the causes of changes in PRKCD expression were analyzed from the perspective of genetic and epigenetics based on collated liver hepatocellular carcinoma data.Results:Both the mRNA and protein expression level of PRKCD gene in Liver hepatocellular carcinoma tissues was significantly higher than that in adjacent tissues.Its expression level was correlated with TNM stage,Histologic grade,Alpha fetoprotein(AFP)and Living status in clinicopathological features,and its expression level has certain clinical diagnostic accuracy.Kaplan-Meier analysis showed that the prognosis of patients with low PRKCD expression was significantly better than that with high PRKCD expression.Univariate and multivariate Cox regression analysis showed that PRKCD was an independent prognostic factor in patients with Liver hepatocellular carcinoma,and it was also found that the risk ratio of TNM stage III and stage IV survival curve(HR)was significantly greater than that of stage I and stage II.GSEA analysis showed that it was enriched in cell cycles and DNA replication,and was positively correlated with PRKCD.Enrichment analysis found that PRKCD is mainly involved in the chemokine signaling pathway,NOD-like receptor signaling pathway,PPAR signaling pathway,adipocytokine signaling pathway and T-cell receptor signaling pathway.Finally,through genetic and epigenetic analysis,it is found that the increase in the number of copies of genes will increase the expression level of PRKCD,and the methylation level is negatively correlated with the expression level of PRKCD.Conclusion:PRKCD gene is upregulated in Liver hepatocellular carcinoma tissues,and its overexpression level is closely related to patient poor prognosis.
文摘慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)是一种以持续存在的呼吸道症状和气流受限为主要特征的、常见的、可预防和治疗的慢性气道疾病。目前,我国COPD的患病率仍呈不断增长的趋势,已成为仅次于高血压、糖尿病的中国第三大常见慢性病,给患者家庭和国家卫生系统带来巨大的负担。研究证实,肺部炎症、肺细胞衰老、肺线粒体功能障碍和肺代谢失调是COPD发生与发展的主要病理原因,腺苷酸活化蛋白激酶(AMP-activated protein kinase,AMPK)可以改善肺部炎症反应、延缓肺细胞衰老、纠正肺线粒体功能障碍及调节肺细胞代谢紊乱。但就目前而言,通过运动手段上调AMPK的表达防治COPD的潜在机制仍不清楚。因此,通过中国知网(CNKI)、PubMed、Web of Science、WHO等官网与数据库,检索并梳理相关文献资料,综述COPD的发病机制、运动对AMPK表达的影响及运动介导AMPK防治COPD的可能机制,以期为COPD提供新的治疗靶点。
基金This work was supported by the Excellent Young Teachers Program of Ministry of Education of Chian Scientific Developing Program of Beijing Municipal Commission of Education (200KJ080+2 种基金 KM200310025100) Beijing Natural Science Foundation (7032005) Nati