کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2020393 | 1542336 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Expression of bioactive soluble human stem cell factor (SCF) from recombinant Escherichia coli by coproduction of thioredoxin and efficient purification using arginine in affinity chromatography
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Expression of bioactive soluble human stem cell factor (SCF) from recombinant Escherichia coli by coproduction of thioredoxin and efficient purification using arginine in affinity chromatography Expression of bioactive soluble human stem cell factor (SCF) from recombinant Escherichia coli by coproduction of thioredoxin and efficient purification using arginine in affinity chromatography](/preview/png/2020393.png)
چکیده انگلیسی
Stem cell factor (SCF) known as the c-kit ligand is a two disulfide bridge-containing cytokine in the regulation of the development and function of hematopoietic cell lineages and other cells such as mast cells, germ cells, and melanocytes. The secreted soluble form of SCF exists as noncovalently associated homodimer and exerts its activity by signaling through the c-Kit receptor. In this report, we present the high level expression of a soluble recombinant human SCF (rhSCF) in Escherichia coli. A codon-optimized Profinity eXactâ¢-tagged hSCF cDNA was cloned into pET3b vector, and transformed into E. coli BL21(DE3) harboring a bacterial thioredoxin coexpression vector. The recombinant protein was purified via an affinity chromatography processed by cleavage with sodium fluoride, resulting in the complete proteolytic removal the N-terminal tag. Although almost none of the soluble fusion protein bound to the resin in standard protocol using 0.1 M sodium phosphate buffer (pH 7.2), the use of binding buffer containing 0.5 M l-arginine for protein stabilization dramatically enhanced binding to resin and recovery of the protein beyond expectation. Also pretreatment by Triton X-114 for removing endotoxin was effective for affinity chromatography. In chromatography performance, l-arginine was more effective than Triton X-114 treatment. Following Mono Q anion exchange chromatography, the target protein was isolated in high purity. The rhSCF protein specifically enhanced the viability of human myeloid leukemia cell line TF-1 and the proliferation and maturation of human mast cell line LAD2 cell. This novel protocol for the production of rhSCF is a simple, suitable, and efficient method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protein Expression and Purification - Volume 105, January 2015, Pages 1-7
Journal: Protein Expression and Purification - Volume 105, January 2015, Pages 1-7
نویسندگان
Teruo Akuta, Takane Kikuchi-Ueda, Keitaro Imaizumi, Hiroyuki Oshikane, Toshio Nakaki, Yoko Okada, Sara Sultana, Kenichiro Kobayashi, Nobutaka Kiyokawa, Yasuo Ono,