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Cost-effective production of tag-less recombinant protein in Nicotiana benthamiana.


ABSTRACT: Plants have recently received a great deal of attention as a means of producing recombinant proteins. Despite this, a limited number of recombinant proteins are currently on the market and, if plants are to be more widely used, a cost-effective and efficient purification method is urgently needed. Although affinity tags are convenient tools for protein purification, the presence of a tag on the recombinant protein is undesirable for many applications. A cost-effective method of purification using an affinity tag and the removal of the tag after purification has been developed. The family 3 cellulose-binding domain (CBM3), which binds to microcrystalline cellulose, served as the affinity tag and the small ubiquitin-related modifier (SUMO) and SUMO-specific protease were used to remove it. This method, together with size-exclusion chromatography, enabled purification of human interleukin-6 (hIL6) with a yield of 18.49 mg/kg fresh weight from leaf extracts of Nicotiana benthamiana following Agrobacterium-mediated transient expression. Plant-produced hIL6 (P-hIL6) contained less than 0.2 EU/?g (0.02 ng/mL) endotoxin. P-hIL6 activated the Janus kinase-signal transducer and activator of transcriptional pathways in human LNCaP cells, and induced expression of IL-21 in activated mouse CD4+ T cells. This approach is thus a powerful method for producing recombinant proteins in plants.

SUBMITTER: Islam MR 

PROVIDER: S-EPMC6523591 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Cost-effective production of tag-less recombinant protein in Nicotiana benthamiana.

Islam Md Reyazul MR   Kwak Ju-Won JW   Lee Jeon-Soo JS   Hong Sung-Wook SW   Khan Md Rezaul Islam MRI   Lee Yongjik Y   Lee Yoontae Y   Lee Seung-Woo SW   Hwang Inhwan I  

Plant biotechnology journal 20181208 6


Plants have recently received a great deal of attention as a means of producing recombinant proteins. Despite this, a limited number of recombinant proteins are currently on the market and, if plants are to be more widely used, a cost-effective and efficient purification method is urgently needed. Although affinity tags are convenient tools for protein purification, the presence of a tag on the recombinant protein is undesirable for many applications. A cost-effective method of purification usin  ...[more]

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