为了构建猪圆环病毒1型(porcine circovirus type 1,PCV1)和猪圆环病毒3型(porcine circovirus type 3,PCV3)的嵌合病毒PCV1-3,并为PCV3疫苗研制奠定基础,该研究以PCV1基因组为骨架,将PCV1的ORF2基因替换为PCV3的ORF2基因,构建嵌合型猪...为了构建猪圆环病毒1型(porcine circovirus type 1,PCV1)和猪圆环病毒3型(porcine circovirus type 3,PCV3)的嵌合病毒PCV1-3,并为PCV3疫苗研制奠定基础,该研究以PCV1基因组为骨架,将PCV1的ORF2基因替换为PCV3的ORF2基因,构建嵌合型猪圆环病毒(PCV1-3)DNA克隆。PCR和序列测序结果显示,成功构建出了PCV1-3感染性克隆;将感染性克隆转染PK-15细胞,并将第4代病毒进行免疫过氧化物酶单层试验(IPMA)和蛋白免疫印迹(Western Blot)检测,结果显示成功拯救了重组病毒PCV1-3。对第4代病毒进行滴度测定,效价为105.13 TCID 50/mL。因此,该试验成功拯救出一种新型嵌合型病毒PCV1-3,并为进一步研究PCV3疫苗奠定了基础。展开更多
PCV1 was isolated from IBRS-2 cells line,and its complete genomic sequence was cloned by PCR.Sequence analysis indicated that this PCV1 strain shares >98% nucleotide identity with the other PCV1 strains in GenBank....PCV1 was isolated from IBRS-2 cells line,and its complete genomic sequence was cloned by PCR.Sequence analysis indicated that this PCV1 strain shares >98% nucleotide identity with the other PCV1 strains in GenBank.Then double copy molecule clone(pSK2PCV1) was constructed and used to transfect PK-15 cell line.The results of indirect immunofluorescence(IIF) and RT-PCR suggested that pSK2PCV1 could form infectious virus after being transfected into PK-15 cells.展开更多
文摘为了构建猪圆环病毒1型(porcine circovirus type 1,PCV1)和猪圆环病毒3型(porcine circovirus type 3,PCV3)的嵌合病毒PCV1-3,并为PCV3疫苗研制奠定基础,该研究以PCV1基因组为骨架,将PCV1的ORF2基因替换为PCV3的ORF2基因,构建嵌合型猪圆环病毒(PCV1-3)DNA克隆。PCR和序列测序结果显示,成功构建出了PCV1-3感染性克隆;将感染性克隆转染PK-15细胞,并将第4代病毒进行免疫过氧化物酶单层试验(IPMA)和蛋白免疫印迹(Western Blot)检测,结果显示成功拯救了重组病毒PCV1-3。对第4代病毒进行滴度测定,效价为105.13 TCID 50/mL。因此,该试验成功拯救出一种新型嵌合型病毒PCV1-3,并为进一步研究PCV3疫苗奠定了基础。
文摘PCV1 was isolated from IBRS-2 cells line,and its complete genomic sequence was cloned by PCR.Sequence analysis indicated that this PCV1 strain shares >98% nucleotide identity with the other PCV1 strains in GenBank.Then double copy molecule clone(pSK2PCV1) was constructed and used to transfect PK-15 cell line.The results of indirect immunofluorescence(IIF) and RT-PCR suggested that pSK2PCV1 could form infectious virus after being transfected into PK-15 cells.
