目的筛查恒河猴BST-2基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,c SNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,单克隆测序比对,确定猴BST-2的c SNP位点;通过蛋白质结构分...目的筛查恒河猴BST-2基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,c SNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,单克隆测序比对,确定猴BST-2的c SNP位点;通过蛋白质结构分析软件对蛋白结构进行分析;比较不同基因型猴体内SHIVSF162 p 3复制水平的差异。结果序列比对发现8个非同义突变位点;经Psipred软件预测,其中G41A、T128C、C129和A333C c SNP位点可影响BST-2蛋白二级结构。在SHIVSF162 p 3感染平台期,参考基因型猴(DLQ)病毒复制水平要高于GLQ型猴(P<0.05),其他基因型猴之间无显著差异。结论 c SNP(G41A)可能影响BST-2的抗病毒功能,这为后续研究提供参考信息。展开更多
目的筛查恒河猴samhd1基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,cSNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,测序比对,确定基因编码区变异位点;通过蛋白质结构分析软件...目的筛查恒河猴samhd1基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,cSNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,测序比对,确定基因编码区变异位点;通过蛋白质结构分析软件对该蛋白结构进行分析;使用SNaPshot方法筛查138只恒河猴基因背景。结果序列比对发现5个非同义突变位点C15G(2.17%)、C320T(6.88%)、G547A(13.41%)、A552T(4.35%)、T839C(17.39%);其中除C15G外的其它四个cSNP位点均处于SAMHD1蛋白重要结构域上,且G547A、A552T、T839C三个cSNP位点改变SAMHD1蛋白二级结构,可能影响SAMHD1蛋白功能。结论恒河猴samhd1基因编码区存在三个可能影响SAMHD1蛋白功能的cSNP位点,为后续研究提供了参考信息。展开更多
"The 16^th Chinese Society of Neuroscience & Psychiatry (CSNP)National Academic Conference", sponsored by Chinese Society of Neuroscience & Psychiatry, co-sp on sored by Shanghai Mentai Health Center..."The 16^th Chinese Society of Neuroscience & Psychiatry (CSNP)National Academic Conference", sponsored by Chinese Society of Neuroscience & Psychiatry, co-sp on sored by Shanghai Mentai Health Center Affiliated to Shanghai Jiao Tong Un iversity School of Medicine,Harbin First Specialized Hospital, will be held on June 27-29, 2019 at Rong Chuang Wanda Vista Hotel, Harbin. The conference will bring communication of the latest advances of mental disorders through keynote talks, forums, symposiums, oral reports, and poster presentations.展开更多
The majority of single nucleotide polymorphisms(SNPs)found in the coding region(cSNPs)are single base substitutions that may or may not lead to amino acid substitutions,most of which are related to diseases.Some cSNPs...The majority of single nucleotide polymorphisms(SNPs)found in the coding region(cSNPs)are single base substitutions that may or may not lead to amino acid substitutions,most of which are related to diseases.Some cSNPs may prove useful for their potential links to functional cSNPs via linkage disequilibrium mapping.We have selected 48 cSNPs located in the coding regions of 25 genes to construct the cSNP chip.These genes are harbored in the high frequency loss regions of the chromosome 1p and 8p and related with apoptosis,cell cycles,signal transduction,oncogene,tumor suppressor genes and so on.All of the cSNPs can lead to amino acid substitutions except TP73(rs1801174).The PCR products amplified from 31 hepatocellular carcinoma(HCC)specimens were labeled with Dig-dUTP and then hybridized with the cSNP chips.The results showed that there was no hybridization signal when there was more than one site of mutation in the amplification sequence,indicating that the cSNP chip had a high sensitivity.The statistic data of the SNP(MT,homozygous and HT,heterozygous)in the HCC patients with different phenotypes(HBV+/-,differentiation stage,family history positive or negative,tumor size)indicated that the number of MT was distinctly different between patients with positive HBV and negative HBV.The MT and HT numbers of all the 48 cSNPs were significantly different between low differentiation and high differentiation HCC patients.The numbers of MT and HT were not different between positived and negative family history groups and between tumor size>3 cm and≤3 cm groups.The study results provided useful information for understanding the molecular mechanisms of HCC development.展开更多
文摘目的筛查恒河猴BST-2基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,c SNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,单克隆测序比对,确定猴BST-2的c SNP位点;通过蛋白质结构分析软件对蛋白结构进行分析;比较不同基因型猴体内SHIVSF162 p 3复制水平的差异。结果序列比对发现8个非同义突变位点;经Psipred软件预测,其中G41A、T128C、C129和A333C c SNP位点可影响BST-2蛋白二级结构。在SHIVSF162 p 3感染平台期,参考基因型猴(DLQ)病毒复制水平要高于GLQ型猴(P<0.05),其他基因型猴之间无显著差异。结论 c SNP(G41A)可能影响BST-2的抗病毒功能,这为后续研究提供参考信息。
文摘目的筛查恒河猴samhd1基因编码区单核苷酸多态性(coding-region single nucleotide polymorphism,cSNP),研究其对蛋白结构和功能的影响。方法提取恒河猴外周血RNA,RT-PCR扩增,测序比对,确定基因编码区变异位点;通过蛋白质结构分析软件对该蛋白结构进行分析;使用SNaPshot方法筛查138只恒河猴基因背景。结果序列比对发现5个非同义突变位点C15G(2.17%)、C320T(6.88%)、G547A(13.41%)、A552T(4.35%)、T839C(17.39%);其中除C15G外的其它四个cSNP位点均处于SAMHD1蛋白重要结构域上,且G547A、A552T、T839C三个cSNP位点改变SAMHD1蛋白二级结构,可能影响SAMHD1蛋白功能。结论恒河猴samhd1基因编码区存在三个可能影响SAMHD1蛋白功能的cSNP位点,为后续研究提供了参考信息。
文摘"The 16^th Chinese Society of Neuroscience & Psychiatry (CSNP)National Academic Conference", sponsored by Chinese Society of Neuroscience & Psychiatry, co-sp on sored by Shanghai Mentai Health Center Affiliated to Shanghai Jiao Tong Un iversity School of Medicine,Harbin First Specialized Hospital, will be held on June 27-29, 2019 at Rong Chuang Wanda Vista Hotel, Harbin. The conference will bring communication of the latest advances of mental disorders through keynote talks, forums, symposiums, oral reports, and poster presentations.
文摘The majority of single nucleotide polymorphisms(SNPs)found in the coding region(cSNPs)are single base substitutions that may or may not lead to amino acid substitutions,most of which are related to diseases.Some cSNPs may prove useful for their potential links to functional cSNPs via linkage disequilibrium mapping.We have selected 48 cSNPs located in the coding regions of 25 genes to construct the cSNP chip.These genes are harbored in the high frequency loss regions of the chromosome 1p and 8p and related with apoptosis,cell cycles,signal transduction,oncogene,tumor suppressor genes and so on.All of the cSNPs can lead to amino acid substitutions except TP73(rs1801174).The PCR products amplified from 31 hepatocellular carcinoma(HCC)specimens were labeled with Dig-dUTP and then hybridized with the cSNP chips.The results showed that there was no hybridization signal when there was more than one site of mutation in the amplification sequence,indicating that the cSNP chip had a high sensitivity.The statistic data of the SNP(MT,homozygous and HT,heterozygous)in the HCC patients with different phenotypes(HBV+/-,differentiation stage,family history positive or negative,tumor size)indicated that the number of MT was distinctly different between patients with positive HBV and negative HBV.The MT and HT numbers of all the 48 cSNPs were significantly different between low differentiation and high differentiation HCC patients.The numbers of MT and HT were not different between positived and negative family history groups and between tumor size>3 cm and≤3 cm groups.The study results provided useful information for understanding the molecular mechanisms of HCC development.
