相关实验视频

Updated: Jan 8, 2026

Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach

Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach

Published on: September 11, 2017

有针对性的双重选择以优化转子子稳定池生成多种特异性的优化

Julie Johnston¹, Sonja Tierson¹, Yuyan Xu^1,2

¹Sanofi US, Large Molecule Research, Cambridge, MA, USA.

|December 14, 2025

概括

开发有针对性的双选择 (TDS) 稳定细胞池可以提高复杂的多特异性抗体的产量和质量,克服生物制药研究中常见的表达和净化挑战.

科学领域:

生物技术是生物技术.
分子生物学分子生物学
蛋白质工程是指蛋白质工程.

背景情况:

下一代生物药物,包括两种特异性和三种特异性抗体,利用多种特异性向来提高疗效.
这些分子的复杂性在表达和净化方面带来了重大挑战,往往导致低产量和错误配对.
稳定的细胞池表达对于推动这些复杂分子从研究到开发至关重要.

研究的目的:

开发和实施一种优化的方法,用于生成复杂的多种类型抗体的稳定细胞池.
为了解决低产量的局限性和双特异性和三特异性抗体净化中的错配.
提高生物制药研究设计分子的生产和质量.

主要方法:

实施了有针对性的双重选择 (TDS),一种新的方法,将选择性压力与转子子引导的基因集成相结合.
利用来自高通量瞬态生产的分析数据来预测最佳矢量配置.
创建并评估了针对双特异性和三特异性抗体生产的优化TDS稳定池.

主要成果:

对Y形双特异性和交叉双变量三特异性分子的兴趣蛋白产量增加了多达四倍.
在最初的捕获净化步骤中保持产品质量.
在初始捕获净化阶段证明了分子质量的提高.

结论:

使用TDS优化的稳定细胞池可以显著提高复杂的多种类型抗体生产的产量和质量.
这一策略简化了净化过程,提高了生产产量,促进了及时的项目进展.
TDS提供了一种有价值的方法来推动下一代生物制剂的研究和开发.

关键词:

稳定细胞池是一个稳定的细胞池.两种特异性抗体的抗体双重选择的双重选择有针对性的双重选择.三种特异性抗体的抗体

更多相关视频

Transfection, Selection, and Colony-picking of Human Induced Pluripotent Stem Cells TALEN-targeted with a GFP Gene into the AAVS1 Safe Harbor

Transfection, Selection, and Colony-picking of Human Induced Pluripotent Stem Cells TALEN-targeted with a GFP Gene into the AAVS1 Safe Harbor

Published on: February 1, 2015

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing

Published on: July 7, 2020

相关概念视频

Conservative Site-specific Recombination and Phase Variation

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...

DNA-only Transposons

DNA-only Transposons

DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...

Overview of Transposition and Recombination

Overview of Transposition and Recombination

Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...