[Construction and expression of recombinant adenovirus containing human thymic stromal lymphopoietin gene].
OBJECTIVE
To construct and express recombinant adenovirus bearing human thymic stromal lymphopoietin (TSLP) gene.


METHODS
TSLP gene amplified from human fetal lung cells was first cloned into eukaryotic expression vector pcDNA3.1, and then subcloned into shuttle vector pShuttle. The resultant plasmid was subsequently cotransformed into E. coli BJ5183 cells with adenoviral backbone plasmid pAdEasy-1. The recombinant adenovirus plasmid containing TSLP was digested with Pac I and transfected into HEK293 cells to package recombinant adenovirus particles. The TSLP gene of the recombinant virus was detected by PCR, and its expression was analyzed by Western blot.


RESULTS
Recombinant adenovirus vector bearing human TSLP gene was constructed by homologous recombination in E.coli, and recombinant adenovirus was obtained by transfecting HEK293 cells with this infectious DNA. PCR test indicated that TSLP gene was successfully integrated into the adenoviral genome, and the titer of the recombinant Ad reached 1 x 10(11) pfu/L. Meanwhile, expression of TSLP in the infected Hela cells was confirmed by Western blot.


CONCLUSIONS
The construction of recombinant adenovirus bearing human TSLP gene and its expression mediated by this adenovirus pave a foundation for the study on the biological function of this novel cytokine.
Shi
Li-yun
LY
Institute of Immunology, Zhejiang University, Hangzhou 310014, China. shi_liyun@msn.com
Sun
Hong-ying
HY
Zhang
Li-huang
LH
D000256:Adenoviridae / Q000235:genetics*; D002460:Cell Line; D003001:Cloning, Molecular; D016207:Cytokines / Q000235:genetics*; D004274:DNA, Recombinant / Q000235:genetics*; D015870:Gene Expression; D005822:Genetic Vectors / Q000235:genetics; D006801:Humans; D010957:Plasmids / Q000235:genetics; D016133:Polymerase Chain Reaction; D000094632:Thymic Stromal Lymphopoietin
D016207:Cytokines; D004274:DNA, Recombinant; D000094632:Thymic Stromal Lymphopoietin