Objective: Allelic polymorphisms of CCR5△32CCR2b-64I,CX3CR1-2491280M and SDF1-3'A associatedwith HIV-1 infection and disease progression wereinvestigated in indigenous Uygur populations from theXinjiang Uygur Aut...Objective: Allelic polymorphisms of CCR5△32CCR2b-64I,CX3CR1-2491280M and SDF1-3'A associatedwith HIV-1 infection and disease progression wereinvestigated in indigenous Uygur populations from theXinjiang Uygur Autonomous Region of China. Methods: The study population comprised 316 healthyUygur subjects with an age range of 1-80 years old, fromwhom whole peripheral blood samples were collected andnone were HIV-1 seropositive. Genomic DNA samples werepurified using a Qiagen Blood Kit. Genotyping of theaforementioned four alleles was performed using PCR orPCR/RFLP assay, and further confirmed by direct DNAsequencing. Results: The allelic frequencies in Chinese Uygurpopulation were as follows: 3.48% for CCR5△32; 19.45% forCCR2b-64I; 13.8% for CX3CR1-2491280M haplotype, and20.41% for SDF1-3'A. Mutant allele distributions amongUygur populations were in accordance with theHardy-Weinberg equilibrium. No statistical difference wasfound between the frequency of the three HIV coreceptors andtheir respective ligand genes. Conclusion: The frequency of SDF1-3'A andCX3CR1-2491280M haplotypes in these Uygur populationswas similar to that of Caucasian people, while the frequency ofthe CCR2b-64I haplotype more closely matched the HanChinese. The frequency of CCR5△A32 in Uygur populationswas between Caucasian and Hall frequencies, the more closelymatching the frequency in Medi-Asia people. No geneticlinkage between any two of the three HIV coreceptor geneswas found, but obvious genetic linkages existed betweenCX3CR1-249I and CX3CR1-280M,with even higher linkagedegrees than Caucasian people.展开更多
Objective:Our objective was to construct a recombinant bacillus Calmette-Guérin vaccine(rBCG) that secretes human interferon-alpha 2b(IFNα-2b) and to study its immunogenicity and in vitro antitumor activity agai...Objective:Our objective was to construct a recombinant bacillus Calmette-Guérin vaccine(rBCG) that secretes human interferon-alpha 2b(IFNα-2b) and to study its immunogenicity and in vitro antitumor activity against human bladder cancer cell lines T24 and T5637.Methods:The signal sequence BCG Ag85B and the gene IFNα-2b were amplified from the genome of BCG and human peripheral blood,respectively,by polymerase chain reaction(PCR).The two genes were cloned in Escherichia coli-BCG shuttle-vector pMV261 to obtain a new recombinant plasmid pMV261-Ag85B-IFNα-2b.BCG was transformed with the recombinant plasmid by electroporation and designated rBCG-IFNα-2b.Mononuclear cells were isolated from human peripheral blood(PBMCs) and stimulated with rBCG-IFNα-2b or wild type BCG for 3 d,and then cultured with human bladder cancer cell lines T24 and T5637.Their cytotoxicities were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay.Results:BCG was successfully transformed with the recombinant plasmid pMV261-Ag85B-IFNα-2b by electroporation and the recombinant BCG(rBCG-IFNα-2b) was capable of synthesizing and secreting cytokine IFNα-2b.PBMC proliferation was enhanced significantly by rBCG-IFNα-2b,and the cytotoxicity of PBMCs stimulated by rBCG-IFNα-2b to T24 and T5627 was significantly stronger in comparison to wild type BCG.Conclusions:A recombinant BCG,secreting human IFNα-2b(rBCG-IFNα-2b),was constructed successfully and was superior to control wild type BCG in inducing immune responses and enhancing cytotoxicity to human bladder cancer cell lines T24 and T5637.This suggests that rBCG-IFNα-2b could be a promising agent for bladder cancer patients in terms of possible reductions in both clinical dosage and side effects of BCG immunotherapy.展开更多
目的探讨白三烯受体拮抗剂(leukotriene receptor antagonists,LTRA)与ATP结合盒亚家族C1(ATP-binding cassette sub-family C member 1,ABCC1)基因rs119774位点、溶质载体有机阴离子转运蛋白家族成员2B1(solute carrier organic anion ...目的探讨白三烯受体拮抗剂(leukotriene receptor antagonists,LTRA)与ATP结合盒亚家族C1(ATP-binding cassette sub-family C member 1,ABCC1)基因rs119774位点、溶质载体有机阴离子转运蛋白家族成员2B1(solute carrier organic anion transporter family member 2B1,SLCO2B1)基因rs12422149位点的单核苷酸多态性(single nucleotide polymorphism,SNP)治疗汉族儿童支气管哮喘疗效的相关性。方法选取2019年4月至2021年12月于福建中医药大学附属厦门市中医院就诊的4~13岁汉族支气管哮喘患儿100例为研究对象,采用一代测序法对患儿的ABCC1基因rs119774位点、SLCO2B1基因rs12422149位点进行检测,分析比较2个位点的SNP分布情况。入组患儿均应用LTRA进行治疗,分别于治疗前与治疗12周时进行肺通气功能及脉冲震荡功能检测,并评估临床症状控制水平,分析患儿疗效与SNP的相关性。统计学方法采用t检验、χ^(2)检验。结果治疗前与治疗12周后,ABCC1基因rs119774位点CC型哮喘患儿应用孟鲁司特钠第1秒用力呼气容积(forced expiratory volume in the first second,FEV_(1))[(87.0±16.5)与(93.2±15.1)L,t=-2.071,P=0.038]、峰值呼气流速(peak expiratory flow,PEF)[(77.1±16.9)与(86.5±16.6)L/s,t=-3.233,P=0.001]和25%肺活量的呼气流速(forced expiratory flow 25,FEF25)[(69.6±18.8)与(78.1±19.9)L/s,t=-1.985,P=0.047]均有明显提高,脉冲震荡各项指标显著改善(P<0.05)。治疗后SLCO2B1基因rs12422149位点AA型肺功能指标PEF高于治疗前[(79.0±16.0)与(93.0±9.4)L/s,t=-2.547,P=0.011],治疗后GG型肺功能各指标显著高于治疗前(P<0.05)。ABCC1治疗前后控制率[59%(59/100)与78%(78/100),78%(78/100),χ^(2)=20.964,P<0.001];治疗前后SLCO2B1基因rs119774位点AA型、AG型、GG型的控制率分别为[59%(59/100)与78%(78/100),78%(78/100),χ^(2)=20.964,P<0.001]、[53%(8/15)与80%(12/15),93%(14/15)χ^(2)=12.786,P=0.002]与[56%(23/41)与78%(32/41),78%(32/41),χ^(2)=6.583,P=0.037]与[73%(32/44)与77%(34/44),73%(32/44),χ^(2展开更多
基金This project was funded by the National Natural Science Foundation of China(No:397706830)
文摘Objective: Allelic polymorphisms of CCR5△32CCR2b-64I,CX3CR1-2491280M and SDF1-3'A associatedwith HIV-1 infection and disease progression wereinvestigated in indigenous Uygur populations from theXinjiang Uygur Autonomous Region of China. Methods: The study population comprised 316 healthyUygur subjects with an age range of 1-80 years old, fromwhom whole peripheral blood samples were collected andnone were HIV-1 seropositive. Genomic DNA samples werepurified using a Qiagen Blood Kit. Genotyping of theaforementioned four alleles was performed using PCR orPCR/RFLP assay, and further confirmed by direct DNAsequencing. Results: The allelic frequencies in Chinese Uygurpopulation were as follows: 3.48% for CCR5△32; 19.45% forCCR2b-64I; 13.8% for CX3CR1-2491280M haplotype, and20.41% for SDF1-3'A. Mutant allele distributions amongUygur populations were in accordance with theHardy-Weinberg equilibrium. No statistical difference wasfound between the frequency of the three HIV coreceptors andtheir respective ligand genes. Conclusion: The frequency of SDF1-3'A andCX3CR1-2491280M haplotypes in these Uygur populationswas similar to that of Caucasian people, while the frequency ofthe CCR2b-64I haplotype more closely matched the HanChinese. The frequency of CCR5△A32 in Uygur populationswas between Caucasian and Hall frequencies, the more closelymatching the frequency in Medi-Asia people. No geneticlinkage between any two of the three HIV coreceptor geneswas found, but obvious genetic linkages existed betweenCX3CR1-249I and CX3CR1-280M,with even higher linkagedegrees than Caucasian people.
基金Project(No.2006C30011)supported by the Science and Technology Department of Zhejiang Province of China
文摘Objective:Our objective was to construct a recombinant bacillus Calmette-Guérin vaccine(rBCG) that secretes human interferon-alpha 2b(IFNα-2b) and to study its immunogenicity and in vitro antitumor activity against human bladder cancer cell lines T24 and T5637.Methods:The signal sequence BCG Ag85B and the gene IFNα-2b were amplified from the genome of BCG and human peripheral blood,respectively,by polymerase chain reaction(PCR).The two genes were cloned in Escherichia coli-BCG shuttle-vector pMV261 to obtain a new recombinant plasmid pMV261-Ag85B-IFNα-2b.BCG was transformed with the recombinant plasmid by electroporation and designated rBCG-IFNα-2b.Mononuclear cells were isolated from human peripheral blood(PBMCs) and stimulated with rBCG-IFNα-2b or wild type BCG for 3 d,and then cultured with human bladder cancer cell lines T24 and T5637.Their cytotoxicities were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay.Results:BCG was successfully transformed with the recombinant plasmid pMV261-Ag85B-IFNα-2b by electroporation and the recombinant BCG(rBCG-IFNα-2b) was capable of synthesizing and secreting cytokine IFNα-2b.PBMC proliferation was enhanced significantly by rBCG-IFNα-2b,and the cytotoxicity of PBMCs stimulated by rBCG-IFNα-2b to T24 and T5627 was significantly stronger in comparison to wild type BCG.Conclusions:A recombinant BCG,secreting human IFNα-2b(rBCG-IFNα-2b),was constructed successfully and was superior to control wild type BCG in inducing immune responses and enhancing cytotoxicity to human bladder cancer cell lines T24 and T5637.This suggests that rBCG-IFNα-2b could be a promising agent for bladder cancer patients in terms of possible reductions in both clinical dosage and side effects of BCG immunotherapy.
文摘目的探讨白三烯受体拮抗剂(leukotriene receptor antagonists,LTRA)与ATP结合盒亚家族C1(ATP-binding cassette sub-family C member 1,ABCC1)基因rs119774位点、溶质载体有机阴离子转运蛋白家族成员2B1(solute carrier organic anion transporter family member 2B1,SLCO2B1)基因rs12422149位点的单核苷酸多态性(single nucleotide polymorphism,SNP)治疗汉族儿童支气管哮喘疗效的相关性。方法选取2019年4月至2021年12月于福建中医药大学附属厦门市中医院就诊的4~13岁汉族支气管哮喘患儿100例为研究对象,采用一代测序法对患儿的ABCC1基因rs119774位点、SLCO2B1基因rs12422149位点进行检测,分析比较2个位点的SNP分布情况。入组患儿均应用LTRA进行治疗,分别于治疗前与治疗12周时进行肺通气功能及脉冲震荡功能检测,并评估临床症状控制水平,分析患儿疗效与SNP的相关性。统计学方法采用t检验、χ^(2)检验。结果治疗前与治疗12周后,ABCC1基因rs119774位点CC型哮喘患儿应用孟鲁司特钠第1秒用力呼气容积(forced expiratory volume in the first second,FEV_(1))[(87.0±16.5)与(93.2±15.1)L,t=-2.071,P=0.038]、峰值呼气流速(peak expiratory flow,PEF)[(77.1±16.9)与(86.5±16.6)L/s,t=-3.233,P=0.001]和25%肺活量的呼气流速(forced expiratory flow 25,FEF25)[(69.6±18.8)与(78.1±19.9)L/s,t=-1.985,P=0.047]均有明显提高,脉冲震荡各项指标显著改善(P<0.05)。治疗后SLCO2B1基因rs12422149位点AA型肺功能指标PEF高于治疗前[(79.0±16.0)与(93.0±9.4)L/s,t=-2.547,P=0.011],治疗后GG型肺功能各指标显著高于治疗前(P<0.05)。ABCC1治疗前后控制率[59%(59/100)与78%(78/100),78%(78/100),χ^(2)=20.964,P<0.001];治疗前后SLCO2B1基因rs119774位点AA型、AG型、GG型的控制率分别为[59%(59/100)与78%(78/100),78%(78/100),χ^(2)=20.964,P<0.001]、[53%(8/15)与80%(12/15),93%(14/15)χ^(2)=12.786,P=0.002]与[56%(23/41)与78%(32/41),78%(32/41),χ^(2)=6.583,P=0.037]与[73%(32/44)与77%(34/44),73%(32/44),χ^(2
