کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2020212 | 1542320 | 2016 | 6 صفحه PDF | دانلود رایگان |
• Der p 2 is one of the most clinically relevant allergens worldwide.
• Recombinant Der p 2 (rDer p 2) is useful in clinical diagnosis and disease-specific immunotherapy.
• N-terminal hexahistidine- and trigger factor (TF)-tagged Der p 2 was expressed in soluble form in Escherichia coli.
• The secondary structure and IgE reactivity properties of rDer p 2 were almost identical to those of natural Der p 2.
Der p 2, a major allergen derived from the house dust mite Dermatophagoides pteronyssinus, is one of the most clinically relevant allergens worldwide. Recombinant Der p 2 (rDer p 2) is useful in clinical diagnosis and disease-specific immunotherapy. However, previous studies showed that Der p 2 can only be expressed in Escherichia coli (E. coli) cells as inclusion bodies, thus protein refolding is required to obtain functional products. Here we report a new method to produce biologically active Der p 2 protein in E. coli. N-terminal hexahistidine- and trigger factor (TF)-tagged Der p 2 was expressed in soluble form in E. coli and purified using a combination of chromatography processes. This procedure produced milligram-level high purity Der p 2 per liter of bacterial culture. Moreover, far-UV region circular dichroism (CD) analysis and serum specific IgE reactivity test demonstrated that the secondary structure and IgE reactivity properties of rDer p 2 produced in our study were almost identical to those of natural Der p 2 (nDer p 2). In conclusion, the method developed in this work provides a useful tool for the production of immunologically active recombinant Der p 2 for clinical applications.
Journal: Protein Expression and Purification - Volume 121, May 2016, Pages 97–102