Transgenic Expression and Identification of Recombinant Human Proinsulin in Peanut
文献类型: 外文期刊
第一作者: Zheng Ling
作者: Zheng Ling;Wang Yu;Wan Shu-Bo;Peng Zhen-Ying;Bi Yu-Ping;Zheng Ling;Wang Yu;Bian Fei;Wan Shu-Bo;Peng Zhen-Ying;Zheng Ling;Wang Yu;Bian Fei;Wan Shu-Bo;Peng Zhen-Ying;Bi Yu-Ping;Jiao Qi-Qing;Qu Shu-Jie;Wan Shu-Bo;Bi Yu-Ping
作者机构:
关键词: Proinsulin;peanut;diabetes;expression
期刊名称:BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY ( 影响因子:0.797; 五年影响因子:1.193 )
ISSN: 1516-8913
年卷期: 2016 年 59 卷
页码:
收录情况: SCI
摘要: The increased incidence of diabetes, coupled with the introduction of alternative insulin delivery methods that rely on higher doses, is expected to result in a substantial escalation in the future demand for affordable insulin. Plant-based systems offer a safe and economical method for producing pharmaceutical proteins. We used peanut (Arachis hypogaea L.) as bio-reactors to express biosafe, stable proinsulin. We designed two proinsulin analogues (FAIA and LAIA) with substitutions in their amino acid sequences. The fast-acting insulin analogue (FAIA) contains a Gly inserted between Cys19 and Gly20, as well as a Pro28Asp substitution, in the B chain. The long-acting insulin analogue (LAIA) contains a Gly inserted between Cys19 and Gly20 and two Arg residues inserted into the terminus of the B chain, as well as an Asn21Gly substitution in the A chain. Four plasmids were constructed: pROKII-Flag-FAIA, pROKII-Flag-LAIA, pCAMBIA2301-Oleosin-FAIA and pCAMBIA2301-Oleosin-LAIA. These plasmids were transferred into peanut to produce recombinant proinsulin. Western blot and GUS staining analysis indicated that some transgenic peanut successfully expressed exogenous proinsulin. Peanut seeds can act as insulin storage sites, which is the foundation for further production of recombinant proinsulin from peanut seeds.
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