title: Expression, purification and identification of Pla a1 in a codon-optimized Platanus pollen allergen.
abstract: The present study aimed to express, purify and identify the major allergen gene, Pla a1, in Platanus pollen. According to previous studies, the major gene sequences of the Pla a1 allergen were obtained and codon optimization and synthesis of the genome were performed using DNAStar software. Following binding of the target gene fragment and the pET-44a vector, the JM109 cells were transfected to produce positive clones. The vectors were then transformed into Escherichia coli Rosetta cells to induce the expression of the target protein. The exogenous protein was purified using affinity chromatography and was identified by western blot analysis. Pla a1, the major allergen protein in Platanus pollen, was successfully isolated and this exogenous protein was purified using affinity chromatography. The present study was the first, to the best of our knowledge, to obtain expression of the allergen recombinant protein, Pla a1, fused with a Strep-TagII via codon optimization and provided the basis for the preparation of allergens with high purity, recombinant hypoallergenic allergens and allergen nucleic acid vaccines.
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Sun
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Guizuo
authors.initials: G
authors.lastname: Wang
authors.affiliation: National Key Laboratory of Respiratory Diseases, Allergy Research Center, Key Laboratory of Allergic Reactions and Clinical Immunology, The Second Affiliated Hospital of Guangzhou Medical College, Guangzhou, Guangdong 510260, P.R. China.
authors.forename: Ailin
authors.initials: A
authors.lastname: Tao
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Manxiang
authors.initials: M
authors.lastname: Li
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Hongyang
authors.initials: H
authors.lastname: Shi
authors.affiliation: Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi 710004, P.R. China.
authors.forename: Mei
authors.initials: M
authors.lastname: Xie
mesh_terms: D000485:Allergens / Q000096:biosynthesis* / Q000235:genetics / Q000276:immunology; D052179:Antigens, Plant / Q000096:biosynthesis* / Q000235:genetics / Q000276:immunology; D015153:Blotting, Western; D002846:Chromatography, Affinity; D003001:Cloning, Molecular; D003062:Codon; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D015870:Gene Expression; D010957:Plasmids / Q000737:chemistry / Q000378:metabolism; D011058:Pollen / Q000737:chemistry* / Q000276:immunology; D039105:Proteaceae / Q000737:chemistry* / Q000276:immunology; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis* / Q000235:genetics / Q000276:immunology; D012984:Software; D014169:Transformation, Bacterial
chemical_list: D000485:Allergens; D052179:Antigens, Plant; D003062:Codon; C479039:Pla a 1, Platanus acerifolia; D011993:Recombinant Fusion Proteins