The main purpose of this study was to detect an association of cytoplasmic signal transducers and activators of transcription-1 （STAT1） with milk production traits in 472 Holstein and 283 Jersey cattle breeds of Tur...The main purpose of this study was to detect an association of cytoplasmic signal transducers and activators of transcription-1 （STAT1） with milk production traits in 472 Holstein and 283 Jersey cattle breeds of Turkey. This gene, located on chromosome 2, was chosen due to its role on development of mammary gland. A polymorphism of selected 314 bp allele fragment was detected by the restriction fragment length polymorphism analysis of polymerase chain reaction-amplified fragments （PCR-RFLP） method and also confirmed by DNA sequencing. The association tests were conducted between STAT1 genotypes and some economically important dairy traits. The genotypes for C/T as a single nucleotide polymorphism （SNP） were identified at interval 60 cM to 63 cM. The effects of STAT1 gene on milk production traits were not significant in Holstein cows, although animals with CT genotypes showed fairly close to significant value for the corrected 305 d milk yield. However, Jersey cows with/7＂ genotype were 2.07 kg higher for test-day milk yield （P 〈 0.05）, 0.13 kg for fat yield （P 〈 0.01） and 0.07 kg for protein yield （P 〈 0.05） compared with animals having CC and CT genotypes. Definitely, the further research should be conducted to search this gene intensively with larger samples to identify polymorphism and any association between the economically important traits and genotypic class in Holstein cows. Finally, based on the findings, it was concluded that STATI gene might be used as a potential candidate gene to improve milk yield and milk fat and protein contents in dairy cows breeding programs.展开更多
脑胶质瘤是常见的中枢神经系统肿瘤,约占颅内肿瘤半数以上。信号转导与转录激活因子(signal transducer and activator of transcription,STAT)是一种信号传导和转录活化因子蛋白,可以从各个角度调节细胞的生长、分化、存活和凋亡。STAT...脑胶质瘤是常见的中枢神经系统肿瘤,约占颅内肿瘤半数以上。信号转导与转录激活因子(signal transducer and activator of transcription,STAT)是一种信号传导和转录活化因子蛋白,可以从各个角度调节细胞的生长、分化、存活和凋亡。STAT1目前被普遍认为是一种肿瘤抑制因子,而STAT3目前被定义为致癌基因。本文就STAT1和STAT3在脑胶质瘤发生发展中的作用及其潜在的交叉调控机制进行阐述,并期望共表达质粒STAT3-siRNA-STAT1可能为脑胶质瘤的治疗提供新思路。展开更多
目的探讨3例慢性皮肤黏膜念珠菌病伴有自身免疫性疾病的信号传导与转录激活因子1(signal transducer and activator of transcription 1,STAT1)功能获得性突变(gain-of-function,GOF)的临床特征及基因特点。方法选取就诊阜阳市人民医院...目的探讨3例慢性皮肤黏膜念珠菌病伴有自身免疫性疾病的信号传导与转录激活因子1(signal transducer and activator of transcription 1,STAT1)功能获得性突变(gain-of-function,GOF)的临床特征及基因特点。方法选取就诊阜阳市人民医院儿科的3例确诊为STAT1 GOF的患儿,对其临床特征进行分析总结,采集外周血样,运用高通量测序(high-throughput sequencing,NGS)进行基因检测,并同时进行父母的基因组DNA测序。结果3例患者均出现慢性皮肤黏膜念珠菌病、支气管扩张,并且伴有不同类型的自身免疫性疾病,基因检测证实均存在STAT1基因突变,有不同的突变位点,3个突变均属功能获得性突变,而父母基因均正常,为新发错义变异。结论STAT1 GOF新发突变易导致慢性皮肤黏膜念珠菌病合并自身免疫性疾病,并且在病程的不同时期STAT1基因突变可能伴随不同的自身免疫性疾病的表现,需定期观察,完善相关基因检测有助于早期诊断,避免漏诊及误诊。展开更多
信号转导和转录活化因子1(Signal transducer and activator of transcription 1,STAT1)是干扰素信号通路中的关键分子,在对抗病毒和其他病原体的免疫反应中发挥重要作用,构建STAT1敲除细胞系有助于研究其在病毒感染过程中的作用与机制...信号转导和转录活化因子1(Signal transducer and activator of transcription 1,STAT1)是干扰素信号通路中的关键分子,在对抗病毒和其他病原体的免疫反应中发挥重要作用,构建STAT1敲除细胞系有助于研究其在病毒感染过程中的作用与机制。本研究利用CRISPR/Cas9(Clustered regularly interspaced short palindromic repeats-Cas9)基因编辑技术构建STAT1基因敲除细胞系。首先构建STAT1基因特异性打靶载体,后通过慢病毒转导人非小细胞肺癌细胞系(Human non-small cell lung cancer cells,A549),嘌呤霉素筛选稳定转导的细胞后进行单克隆化,最后对获取的单克隆细胞在分子水平上进行敲除及敲除回补验证,成功构建一株STAT1基因敲除(STAT1 gene knockout,STAT1-KO)的A549细胞,且该细胞系可维持正常细胞活性与增殖能力。以汉滩病毒(Hantaan virus,HTNV)感染验证,发现在该细胞系中病毒复制水平明显升高。本研究成功构建了一株STAT1-KO A549细胞,可为抗病毒药物和干扰素信号通路研究提供有力工具。展开更多
本研究运用生物信息学方法对水牛信号转导子和转录激活子1(signal transduction and activators of transcription1,STAT1)基因进行电子克隆及其序列分析。以牛STAT1基因序列作为探针电子克隆了水牛STAT1基因完整的编码序列并进行了RT-...本研究运用生物信息学方法对水牛信号转导子和转录激活子1(signal transduction and activators of transcription1,STAT1)基因进行电子克隆及其序列分析。以牛STAT1基因序列作为探针电子克隆了水牛STAT1基因完整的编码序列并进行了RT-PCR验证。序列分析结果表明,水牛的STAT1基因序列长3437bp,包含1个2244bp的开发阅读框,共编码747个氨基酸。该基因cDNA编码区序列与普通牛、绵羊、人、猪、大鼠、小鼠和山羊同源性比对结果表明,其相似性分别为99%、98%、89%、93%、86%、85%和87%。经聚类分析结果表明,水牛与普通牛的分子进化关系最近。展开更多
目的观察固本防哮饮对信号转导和转录因子1(STAT1)及哮喘易感基因血清类黏蛋白1样蛋白3(ORMDL3)的调控作用,分析其防治哮喘机制。方法利用白介素-4诱导人支气管上皮细胞建立哮喘细胞模型,固本防哮饮含药血清对其进行干预,采用实时荧光定...目的观察固本防哮饮对信号转导和转录因子1(STAT1)及哮喘易感基因血清类黏蛋白1样蛋白3(ORMDL3)的调控作用,分析其防治哮喘机制。方法利用白介素-4诱导人支气管上皮细胞建立哮喘细胞模型,固本防哮饮含药血清对其进行干预,采用实时荧光定量-PCR(Real Time PCR)、免疫印迹法(Western blotting,WB)、免疫荧光法(IF)分别从基因、蛋白水平检测细胞中ORMDL3和STAT1的表达及亚细胞定位。结果与正常组比较,模型组ORMDL3、STAT1 m RNA含量升高,但差异无统计学意义(P>0.05),固本防哮饮可降低模型组细胞ORMDL3、STAT1 m RNA水平,差异无统计学意义(P>0.05);与正常组比较,模型组ORMDL3、STAT1蛋白表达显著增加(P<0.05或P<0.01),与模型组相比,固本防哮饮组ORMDL3及STAT1蛋白表达均显著(P<0.05)。结论固本防哮饮对STAT1及ORMDL3的表达有一定的调控作用,可能为固本防哮饮防治哮喘的内在机制。展开更多
文摘The main purpose of this study was to detect an association of cytoplasmic signal transducers and activators of transcription-1 （STAT1） with milk production traits in 472 Holstein and 283 Jersey cattle breeds of Turkey. This gene, located on chromosome 2, was chosen due to its role on development of mammary gland. A polymorphism of selected 314 bp allele fragment was detected by the restriction fragment length polymorphism analysis of polymerase chain reaction-amplified fragments （PCR-RFLP） method and also confirmed by DNA sequencing. The association tests were conducted between STAT1 genotypes and some economically important dairy traits. The genotypes for C/T as a single nucleotide polymorphism （SNP） were identified at interval 60 cM to 63 cM. The effects of STAT1 gene on milk production traits were not significant in Holstein cows, although animals with CT genotypes showed fairly close to significant value for the corrected 305 d milk yield. However, Jersey cows with/7＂ genotype were 2.07 kg higher for test-day milk yield （P 〈 0.05）, 0.13 kg for fat yield （P 〈 0.01） and 0.07 kg for protein yield （P 〈 0.05） compared with animals having CC and CT genotypes. Definitely, the further research should be conducted to search this gene intensively with larger samples to identify polymorphism and any association between the economically important traits and genotypic class in Holstein cows. Finally, based on the findings, it was concluded that STATI gene might be used as a potential candidate gene to improve milk yield and milk fat and protein contents in dairy cows breeding programs.
文摘脑胶质瘤是常见的中枢神经系统肿瘤,约占颅内肿瘤半数以上。信号转导与转录激活因子(signal transducer and activator of transcription,STAT)是一种信号传导和转录活化因子蛋白,可以从各个角度调节细胞的生长、分化、存活和凋亡。STAT1目前被普遍认为是一种肿瘤抑制因子,而STAT3目前被定义为致癌基因。本文就STAT1和STAT3在脑胶质瘤发生发展中的作用及其潜在的交叉调控机制进行阐述,并期望共表达质粒STAT3-siRNA-STAT1可能为脑胶质瘤的治疗提供新思路。
文摘目的探讨3例慢性皮肤黏膜念珠菌病伴有自身免疫性疾病的信号传导与转录激活因子1(signal transducer and activator of transcription 1,STAT1)功能获得性突变(gain-of-function,GOF)的临床特征及基因特点。方法选取就诊阜阳市人民医院儿科的3例确诊为STAT1 GOF的患儿,对其临床特征进行分析总结,采集外周血样,运用高通量测序(high-throughput sequencing,NGS)进行基因检测,并同时进行父母的基因组DNA测序。结果3例患者均出现慢性皮肤黏膜念珠菌病、支气管扩张,并且伴有不同类型的自身免疫性疾病,基因检测证实均存在STAT1基因突变,有不同的突变位点,3个突变均属功能获得性突变,而父母基因均正常,为新发错义变异。结论STAT1 GOF新发突变易导致慢性皮肤黏膜念珠菌病合并自身免疫性疾病,并且在病程的不同时期STAT1基因突变可能伴随不同的自身免疫性疾病的表现,需定期观察,完善相关基因检测有助于早期诊断,避免漏诊及误诊。
文摘本研究运用生物信息学方法对水牛信号转导子和转录激活子1(signal transduction and activators of transcription1,STAT1)基因进行电子克隆及其序列分析。以牛STAT1基因序列作为探针电子克隆了水牛STAT1基因完整的编码序列并进行了RT-PCR验证。序列分析结果表明,水牛的STAT1基因序列长3437bp,包含1个2244bp的开发阅读框,共编码747个氨基酸。该基因cDNA编码区序列与普通牛、绵羊、人、猪、大鼠、小鼠和山羊同源性比对结果表明,其相似性分别为99%、98%、89%、93%、86%、85%和87%。经聚类分析结果表明,水牛与普通牛的分子进化关系最近。
文摘目的观察固本防哮饮对信号转导和转录因子1(STAT1)及哮喘易感基因血清类黏蛋白1样蛋白3(ORMDL3)的调控作用,分析其防治哮喘机制。方法利用白介素-4诱导人支气管上皮细胞建立哮喘细胞模型,固本防哮饮含药血清对其进行干预,采用实时荧光定量-PCR(Real Time PCR)、免疫印迹法(Western blotting,WB)、免疫荧光法(IF)分别从基因、蛋白水平检测细胞中ORMDL3和STAT1的表达及亚细胞定位。结果与正常组比较,模型组ORMDL3、STAT1 m RNA含量升高,但差异无统计学意义(P>0.05),固本防哮饮可降低模型组细胞ORMDL3、STAT1 m RNA水平,差异无统计学意义(P>0.05);与正常组比较,模型组ORMDL3、STAT1蛋白表达显著增加(P<0.05或P<0.01),与模型组相比,固本防哮饮组ORMDL3及STAT1蛋白表达均显著(P<0.05)。结论固本防哮饮对STAT1及ORMDL3的表达有一定的调控作用,可能为固本防哮饮防治哮喘的内在机制。
