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首页> 外文期刊>Bioprocess and Biosystems Engineering >A scalable insect cell-based production process of the human recombinant BMX for in-vitro covalent ligand high-throughput screening
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A scalable insect cell-based production process of the human recombinant BMX for in-vitro covalent ligand high-throughput screening

机译:用于体外共价配体高通量筛选的人重组BMX的基于可缩放的昆虫细胞的生产过程

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摘要

Bone Marrow Tyrosine kinase in the chromosome X (BMX) is a TEC family kinase associated with numerous pathological pathways in cancer cells. Covalent inhibition of BMX activity holds promise as a therapeutic approach against cancer. To screen for potent and selective covalent BMX inhibitors, large quantities of highly pure BMX are normally required which is challenging with the currently available production and purification processes. Here, we developed a scalable production process for the human recombinant BMX (hrBMX) using the insect cell-baculovirus expression vector system. Comparable expression levels were obtained in small-scale shake flasks (13 mL) and in stirred-tank bioreactors (STB, 5 L). A two-step chromatographic-based process was implemented, reducing purification times by 75% when compared to traditional processes, while maintaining hrBMX stability. The final production yield was 24 mg of purified hrBMX per litter of cell culture, with a purity of 99%. Product quality was assessed and confirmed through a series of biochemical and biophysical assays, including circular dichroism and dynamic light scattering. Overall, the platform herein developed was capable of generating 100 mg purified hrBMX from 5 L STB in just 34 days, thus having the potential to assist in-vitro covalent ligand high-throughput screening for BMX activity inhibition.
机译:染色体X(BMX)中的骨髓酪氨酸激酶是与癌细胞中无数病理途径相关的TEC系列激酶。 BMX活性的共价抑制是作为针对癌症的治疗方法的承担。为了筛选有效和选择性的共价BMX抑制剂,通常需要大量的高纯度BMX,这与当前可用的生产和纯化过程有挑战性。在这里,我们使用昆虫细胞 - 杆状病毒表达载体系统开发了人重组BMX(HRBMX)的可扩展生产过程。在小型摇瓶(13mL)和搅拌罐生物反应器中获得相当的表达水平(STB,5L)。实施了两步基相色谱法,与传统方法相比,将净化时间减少75%,同时保持HRBMX稳定性。最终产率为24mg细胞培养物的纯化HRBMX,纯度> 99%。通过一系列生物化学和生物物理测定评估和确认产品质量,包括圆形二色性和动态光散射。总体而言,在此开发的平台能够在仅34天内从5L STB产生100mg纯化的HRBMX,因此具有帮助体外共价配体的高通量筛选用于BMX活性抑制。

著录项

  • 来源
    《Bioprocess and Biosystems Engineering》 |2021年第1期|209-215|共7页
  • 作者单位

    Univ Lisbon Fac Med Inst Med Mol Joao Lobo Antunes Ave Prof Egas Moniz P-1649028 Lisbon Portugal;

    Univ Nova Lisboa Inst Tecnol Quim & Biol Antonio Xavier EAN Av Republ P-2780157 Oeiras Portugal|Inst Biol Expt & Tecnol Ave Republ P-2780157 Oeiras Portugal;

    Univ Lisbon Fac Med Inst Med Mol Joao Lobo Antunes Ave Prof Egas Moniz P-1649028 Lisbon Portugal;

    Univ Lisbon Fac Med Inst Med Mol Joao Lobo Antunes Ave Prof Egas Moniz P-1649028 Lisbon Portugal;

    Univ Nova Lisboa Inst Tecnol Quim & Biol Antonio Xavier EAN Av Republ P-2780157 Oeiras Portugal;

    Univ Nova Lisboa Inst Tecnol Quim & Biol Antonio Xavier EAN Av Republ P-2780157 Oeiras Portugal|Inst Biol Expt & Tecnol Ave Republ P-2780157 Oeiras Portugal;

    Univ Lisbon Fac Med Inst Med Mol Joao Lobo Antunes Ave Prof Egas Moniz P-1649028 Lisbon Portugal|Univ Cambridge Dept Chem Lensfield Rd Cambridge CB2 1EW England;

    Univ Nova Lisboa Inst Tecnol Quim & Biol Antonio Xavier EAN Av Republ P-2780157 Oeiras Portugal|Inst Biol Expt & Tecnol Ave Republ P-2780157 Oeiras Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hrBMX production; IC-BEVS; Bioprocess development; hrBMX crystallization; Cancer therapy;

    机译:HRBMX生产;​​IC-BEV;生物过程开发;HRBMX结晶;癌症治疗;

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