کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5515994 1542303 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced soluble production of cholera toxin B subunit in Escherichia coli by co-expression of SKP chaperones
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Enhanced soluble production of cholera toxin B subunit in Escherichia coli by co-expression of SKP chaperones
چکیده انگلیسی


- Periplasm chaperone SKP increased the soluble expression of rCTB.
- Recombinant CTB secreted into the periplasmic space through the direction of the LTB leader signal.
- Chaperone-induced rCTB retain strong GM1 ganglioside-binding activity and have strong mucosal adjuvanticity.

The cholera toxin B subunit (CTB) is a nontoxic portion of the cholera toxin that retains mucosal adjuvant properties. Expression of CTB in Escherichia coli is difficult as CTB aggregates and accumulates as insoluble inclusion bodies. To remedy this problem, the periplasmic chaperone, SKP, was investigated as possible co-expression partner to increase the solubility of recombinant CTB (rCTB) in E. coli. The result showed co-expression of SKP enhanced the soluble expression of rCTB in E. coli. Moreover, soluble rCTB was successfully expressed and secreted into the periplasmic space through the direction of the LTB leader signal. rCTB in periplasm was purified using an immobilized d-galactose resin; GM1-ELISA experiments showed that rCTB retains strong GM1 ganglioside-binding activity. Intranasal administration of ovalbumin (OVA) with rCTB significantly induced both mucosal and humoral immune responses specific to OVA. These data indicate that co-expression of the molecular chaperone SKP with CTB increased the solubility of rCTB while maintaining its function.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protein Expression and Purification - Volume 138, October 2017, Pages 1-6
نویسندگان
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