Mol Biotechnol, 2022, 65(4):581-589

Application of an Autoinduction Strategy to Optimize the Heterologous Production of an Antitumor Bispecific Fusion Protein Based on the TRAIL Receptor-Selective Mutant Variant in Escherichia coli

Autoinduction is a simple approach for heterologous protein expression that helps to achieve the high-level production of recombinant proteins in soluble form. In this work, we investigated if the application of an autoinduction strategy could help to optimize the production of bifunctional protein SRH-DR5-B, the DR5-specific TRAIL variant DR5-B fused to a VEGFR2-specific peptide SRHTKQRHTALH for dual antitumor and antiangiogenic activity. The protein was expressed in Escherichia coli SHuffle B T7, BL21(DE3), and BL21(DE3)pLysS strains. By IPTG induction, the highest expression level was in SHuffle B T7, while by autoinduction, the similar expression level was achieved in BL21(DE3)pLysS. However, in SHuffle B T7, only 45% of IPTG-induced SRH-DR5-B was expressed in soluble form, in contrast to 75% autoinduced in BL21(DE3)pLysS. The yield of purified SRH-DR5-B protein expressed by autoinduction in BL21(DE3)pLysS was 28 ± 4.5 mg per 200 ml of cell culture, which was 1.4 times higher than the yield from IPTG-induced SHuffle B T7. Regardless of the production method, SRH-DR5-B was equally cytotoxic to BxPC-3 human tumor cells expressing DR5 and VEGFR2 receptors. Thus, the production of SRH-DR5-B by autoinduction in the E. coli BL21(DE3)pLysS strain is an efficient, technologically simple, and economical technique that allows to obtain a large amount of active protein from the cytoplasmic cell fraction. Our work demonstrates that the strategy of induction of protein expression is no less important than the strain selection.

IBCH: 10197
Ссылка на статью в журнале: https://link.springer.com/10.1007/s12033-022-00561-6
Кол-во цитирований на 09.2024: 2
Данные статьи проверены модераторами 2022-09-23

Список научных проектов, где отмечена публикация

  1. New multitarget fusion proteins based on highly specific mutant variant TRAIL DR5-B with effector peptides targeted to various signaling pathways affecting tumor development (April 26, 2021 — December 31, 2023). Dolgikh D.A., Gasparian M.E., Markvicheva E.A., Yagolovich A.V., Artykov A.A., Vorontsova Y.V., Gileva A.M., Isakova A.A., Rybchenko V.S., Chertkova R.V.. Grant, RSF.