Epithelial-to-mesenchymal transition （EMT） plays a critical role in cancer metastasis, and is relevant to the inflammatory microenvironment. Lipopolysaccharide （LPS）, a cell wall constituent of gram-negative bacte...Epithelial-to-mesenchymal transition （EMT） plays a critical role in cancer metastasis, and is relevant to the inflammatory microenvironment. Lipopolysaccharide （LPS）, a cell wall constituent of gram-negative bacteria, has been reported to induce EMT of cancer cells through TLR4 signal. We previously reported that LPS promoted metastasis of mesenchymallike breast cancer cells with high expression of cyclin Dlb. However, the role of cyclin Dlb in LPS-induced EMT has not been fully elucidated. In the present study, we described that cyclin Dlb augmented EMT induced by LPS in MCF-7 breast cancer cells. Cyclin Dlb markedly amplified integrin αvβ3 expression, which was further up-regulated under LPS stimulation. Our results showed ectopic expression of cyclin Dlb promoted invasiveness of epithelial-like MCF-7 cells under LPS stimulation. Additionally, LPS-induced metastasis and EMT in MCF- 7-Dlb cells might depend on αvβ3 expression. Further exploration indicated that cyclin Dlb cooperated with HoxD3, a transcription factor promoting αvβ3 expression, to promote LPS- induced EMT. Knockout of HoxD3 repressed LPS-induced EMT and αvβ3 over-expression in MCF-7 cells with high expression of cyclin Dlb. Specifically, all these effects were in a cyclin Dla independent manner. Taken all together, LPS up-regulated integrin αvβ3 expression in MCF-7 cells with high expression of cyclin D lb and induced EMT in breast cancer cells, which highlights that cyclin Dlb may act as an endogenous pathway participating in exogenous signal inducing EMT in breast cancer cells.展开更多
Objective:To characterize proteins and other nutrients in striatin(DLBS0333),a bioactive protein fraction isolated from snakehead fish(Channa striata) and to investigate its wound healing activity.Methods:Proteins and...Objective:To characterize proteins and other nutrients in striatin(DLBS0333),a bioactive protein fraction isolated from snakehead fish(Channa striata) and to investigate its wound healing activity.Methods:Proteins and other constituents in striatin were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis,two dimension electrophoresis,immunoblotting assay,spectroscopy and high performance liquid chromatography.The wound healing activity of striatin was studied in vitro using 3T3 fibroblast cells and in vivo using wound-induced animal model.Various parameters related to wound healing process were evaluated.Results:Striatin contained four major bioactive proteins with approximate molecular weight of 8.3,10.9,15.4 and 16.7 kDa.In addition to proteins,striatin also contained amino acids(10 essential and 7 non essential amino acids),fatty acids(palmitic acid,oleic acid,stearic acid,linoleic acid,arachidonic acid),vitamins(vitamin A,vitamin B_6)and other nutrients(carbohydrate,dietary fiber,biotin,choline,inositol,L-carnitine,selenium) which are potential for wound healing and increasing serum albumin level.Treatment with striatin both in vitro and in vivo indicated that striatin enhanced cell proliferation.Wound-induced animal model treated with striatin showed significantly faster wound healing process,as confirmed by wound size and faster serum albumin level recovery.Although striatin does not contain albumin,this bioactive protein fraction may lead to enhanced albumin synthesis in the liver thereby maintaining the blood albumin level.Thus,consuming striatin is a better option to improve albumin levels in diseased condition and the condition of being injured.Conclusions:Striatin(DLBS0333) is a potential natural compound for accelerating wound healing in conditions such as post surgery and post partum,and increasing albumin level.展开更多
路易体痴呆(dementia with Lewy bodies,DLB)是一种神经变性性痴呆,发病辜仅次于Alzheimer病,成为老年期痴呆的常见原因。其病因和发病机制不详,以细胞内路易体和路易神经元为病理特征,以波动性认知功能障碍、持续存在的视幻觉和锥体外...路易体痴呆(dementia with Lewy bodies,DLB)是一种神经变性性痴呆,发病辜仅次于Alzheimer病,成为老年期痴呆的常见原因。其病因和发病机制不详,以细胞内路易体和路易神经元为病理特征,以波动性认知功能障碍、持续存在的视幻觉和锥体外系运动功能障碍为临床特点。诊断主要依据特征性的临床表现、神经心理测试和影像学检查。目前尚无特效治疗,主要为对症治疗,可用小剂量左旋多巴、胆碱酯酶抑制剂,慎用神经安定剂。展开更多
To decrease the cost of exchanging load information among processors, a dynamic load-balancing （DLB） algorithm which adopts multieast tree technology is proposed. The muhieast tree construction rules are also propos...To decrease the cost of exchanging load information among processors, a dynamic load-balancing （DLB） algorithm which adopts multieast tree technology is proposed. The muhieast tree construction rules are also proposed to avoid wrongly transferred or redundant DLB messages due to the overlapping of multicast trees. The proposed DLB algorithm is distributed controlled, sender initiated and can help heavily loaded processors with complete distribution of redundant loads with minimum number of executions. Experiments were executed to compare the effects of the proposed DLB algorithm and other three ones, the results prove the effectivity and practicability of the proposed algorithm in dealing with great scale compute-intensive tasks.展开更多
目的:探讨线粒体DNA(mitochondrial DNA,mt DNA)D-环区的单核苷酸多态性(single nucleotide polymorphisms,SNP)与弥漫大B细胞淋巴瘤(diffuse large B cell lymphoma,DLBCL)患者癌症风险和预后的关系。方法:选取1991年7月至2012年7月在...目的:探讨线粒体DNA(mitochondrial DNA,mt DNA)D-环区的单核苷酸多态性(single nucleotide polymorphisms,SNP)与弥漫大B细胞淋巴瘤(diffuse large B cell lymphoma,DLBCL)患者癌症风险和预后的关系。方法:选取1991年7月至2012年7月在河北医科大学第四医院血液科接受治疗的108例DLBCL患者的血液样本,同期159例健康成人血液样本作为对照。常规提取DNA,进行PCR扩增和SNP位点基因型分析,通过病例对照研究调查了D-环区SNP风险状况。结果:核苷酸微小等位基因73A/G、263A/G、315C/C插入与DLBCL的风险降低有关,核苷酸微小等位基因200G/A与DLBCL的风险增加有关。评估D-环SNP在DLBCL患者的预测能力,5个SNP位点通过对数秩检验被确认对DLBCL生存预测存在单因素分析统计学意义,多因素分析确认等位基因16304为DLBCL预后的独立预测因素,16304C患者的生存期明显短于16304T患者(RR=0.513,95%CI为0.266~0.989;P<0.05)。结论:通过对mt DNA D-环区SNP分析可以帮助确定DLBCL的发生风险及高危预后亚组。展开更多
基金This study was supported by National Natural Science Foundation of China （No. 81702920） and China Postdoctoral Science Foundation （Nos. 2016M602311, 2016T90693, 2015M570642）.
文摘Epithelial-to-mesenchymal transition （EMT） plays a critical role in cancer metastasis, and is relevant to the inflammatory microenvironment. Lipopolysaccharide （LPS）, a cell wall constituent of gram-negative bacteria, has been reported to induce EMT of cancer cells through TLR4 signal. We previously reported that LPS promoted metastasis of mesenchymallike breast cancer cells with high expression of cyclin Dlb. However, the role of cyclin Dlb in LPS-induced EMT has not been fully elucidated. In the present study, we described that cyclin Dlb augmented EMT induced by LPS in MCF-7 breast cancer cells. Cyclin Dlb markedly amplified integrin αvβ3 expression, which was further up-regulated under LPS stimulation. Our results showed ectopic expression of cyclin Dlb promoted invasiveness of epithelial-like MCF-7 cells under LPS stimulation. Additionally, LPS-induced metastasis and EMT in MCF- 7-Dlb cells might depend on αvβ3 expression. Further exploration indicated that cyclin Dlb cooperated with HoxD3, a transcription factor promoting αvβ3 expression, to promote LPS- induced EMT. Knockout of HoxD3 repressed LPS-induced EMT and αvβ3 over-expression in MCF-7 cells with high expression of cyclin Dlb. Specifically, all these effects were in a cyclin Dla independent manner. Taken all together, LPS up-regulated integrin αvβ3 expression in MCF-7 cells with high expression of cyclin D lb and induced EMT in breast cancer cells, which highlights that cyclin Dlb may act as an endogenous pathway participating in exogenous signal inducing EMT in breast cancer cells.
基金Supported by PT Dexa Medica(Grant No.101/BPT/DLBS/2015)
文摘Objective:To characterize proteins and other nutrients in striatin(DLBS0333),a bioactive protein fraction isolated from snakehead fish(Channa striata) and to investigate its wound healing activity.Methods:Proteins and other constituents in striatin were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis,two dimension electrophoresis,immunoblotting assay,spectroscopy and high performance liquid chromatography.The wound healing activity of striatin was studied in vitro using 3T3 fibroblast cells and in vivo using wound-induced animal model.Various parameters related to wound healing process were evaluated.Results:Striatin contained four major bioactive proteins with approximate molecular weight of 8.3,10.9,15.4 and 16.7 kDa.In addition to proteins,striatin also contained amino acids(10 essential and 7 non essential amino acids),fatty acids(palmitic acid,oleic acid,stearic acid,linoleic acid,arachidonic acid),vitamins(vitamin A,vitamin B_6)and other nutrients(carbohydrate,dietary fiber,biotin,choline,inositol,L-carnitine,selenium) which are potential for wound healing and increasing serum albumin level.Treatment with striatin both in vitro and in vivo indicated that striatin enhanced cell proliferation.Wound-induced animal model treated with striatin showed significantly faster wound healing process,as confirmed by wound size and faster serum albumin level recovery.Although striatin does not contain albumin,this bioactive protein fraction may lead to enhanced albumin synthesis in the liver thereby maintaining the blood albumin level.Thus,consuming striatin is a better option to improve albumin levels in diseased condition and the condition of being injured.Conclusions:Striatin(DLBS0333) is a potential natural compound for accelerating wound healing in conditions such as post surgery and post partum,and increasing albumin level.
文摘路易体痴呆(dementia with Lewy bodies,DLB)是一种神经变性性痴呆,发病辜仅次于Alzheimer病,成为老年期痴呆的常见原因。其病因和发病机制不详,以细胞内路易体和路易神经元为病理特征,以波动性认知功能障碍、持续存在的视幻觉和锥体外系运动功能障碍为临床特点。诊断主要依据特征性的临床表现、神经心理测试和影像学检查。目前尚无特效治疗,主要为对症治疗,可用小剂量左旋多巴、胆碱酯酶抑制剂,慎用神经安定剂。
基金the National Natural Science Foundation of China(69973007)
文摘To decrease the cost of exchanging load information among processors, a dynamic load-balancing （DLB） algorithm which adopts multieast tree technology is proposed. The muhieast tree construction rules are also proposed to avoid wrongly transferred or redundant DLB messages due to the overlapping of multicast trees. The proposed DLB algorithm is distributed controlled, sender initiated and can help heavily loaded processors with complete distribution of redundant loads with minimum number of executions. Experiments were executed to compare the effects of the proposed DLB algorithm and other three ones, the results prove the effectivity and practicability of the proposed algorithm in dealing with great scale compute-intensive tasks.
文摘目的:探讨线粒体DNA(mitochondrial DNA,mt DNA)D-环区的单核苷酸多态性(single nucleotide polymorphisms,SNP)与弥漫大B细胞淋巴瘤(diffuse large B cell lymphoma,DLBCL)患者癌症风险和预后的关系。方法:选取1991年7月至2012年7月在河北医科大学第四医院血液科接受治疗的108例DLBCL患者的血液样本,同期159例健康成人血液样本作为对照。常规提取DNA,进行PCR扩增和SNP位点基因型分析,通过病例对照研究调查了D-环区SNP风险状况。结果:核苷酸微小等位基因73A/G、263A/G、315C/C插入与DLBCL的风险降低有关,核苷酸微小等位基因200G/A与DLBCL的风险增加有关。评估D-环SNP在DLBCL患者的预测能力,5个SNP位点通过对数秩检验被确认对DLBCL生存预测存在单因素分析统计学意义,多因素分析确认等位基因16304为DLBCL预后的独立预测因素,16304C患者的生存期明显短于16304T患者(RR=0.513,95%CI为0.266~0.989;P<0.05)。结论:通过对mt DNA D-环区SNP分析可以帮助确定DLBCL的发生风险及高危预后亚组。
