Related Experiment Video

Updated: Jul 10, 2026

Bacterial Inner-membrane Display for Screening a Library of Antibody Fragments
12:28

Bacterial Inner-membrane Display for Screening a Library of Antibody Fragments

Published on: October 15, 2016

A novel technique for efficient construction of large scFv libraries

Weijun Qin1, Aizhi Zhao, Yueheng Han

  • 1Department of Urology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.

Molecular Biotechnology
|October 24, 2007
PubMed

Insights

Generating large single chain fragment of variable region (scFv) libraries for cancer therapy is crucial. This study enhances scFv library construction efficiency using T/A cloning, overcoming limitations in traditional methods for antibody screening.

Area of Science:

  • Biotechnology
  • Molecular Biology
  • Immunology

Background:

  • Patient-tailored anti-tumor therapies require large-scale antibody production for screening specific tumor antibodies.
  • Generating large single chain fragment of variable region (scFv) libraries is essential for selecting high-affinity antibodies.

Purpose of the Study:

  • To improve the efficiency of cloning PCR fragments into phage display vectors for scFv library construction.
  • To address the bottleneck caused by inefficient restriction digestion in traditional cloning methods.

Main Methods:

  • Investigated traditional methods like adding longer primer tails and prolonging incubation, finding them ineffective.
  • Explored T/A cloning by first cloning PCR fragments into a T-vector.
  • Subcloned the T-vector inserts into a phagemid vector.

Main Results:

  • Traditional methods for enhancing restriction digestion efficiency proved inefficient.
  • T/A cloning followed by subcloning into a phagemid dramatically increased cloning efficiency.
  • Facilitated the construction of large single chain fragment of variable region (scFv) libraries.

Conclusions:

  • The T/A cloning strategy significantly enhances the efficiency of scFv library construction.
  • This improved method simplifies the generation of large scFv libraries for therapeutic antibody development.
  • Overcomes limitations in current antibody discovery pipelines.

More Related Videos

Construction of Synthetic Phage Displayed Fab Library with Tailored Diversity12:31

Construction of Synthetic Phage Displayed Fab Library with Tailored Diversity

Published on: May 1, 2018

Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source08:35

Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source

Published on: May 29, 2021

Related Concept Videos

SFG Algebra01:16

SFG Algebra

In Signal Flow Graph (SFG) algebra, the value a node represents is determined by the sum of all signals entering that node. This summed value is then transmitted through every branch leaving the node, making the SFG a powerful tool for visualizing and analyzing control systems.
Each node in an SFG corresponds to a variable, and the interactions between nodes are represented by branches with associated gains. When multiple branches lead into a node, the value at that node is the sum of the...
Methods of Medium Optimization01:28

Methods of Medium Optimization

Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...
Synthetic Disvision of Polynomials01:28

Synthetic Disvision of Polynomials

Synthetic division is an efficient algorithmic approach for dividing a polynomial by a linear binomial of the form x - c, where c is a real number. This method is helpful due to its streamlined process, which avoids the more cumbersome steps involved in the traditional long division of polynomials. It simplifies computation and serves as a practical tool for evaluating polynomials and identifying their factors.To perform synthetic division, one begins by listing the coefficients of the...
Compacting Factor test01:22

Compacting Factor test

The compacting factor test is a method used to assess the workability of concrete. It is  especially suitable for concrete mixes containing aggregates up to one and a half inches in size. This test involves specialized equipment consisting of two truncated cone-shaped hoppers and a cylinder, all with polished interior surfaces to minimize friction.
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...
Extended Versions of Green’s Theorem01:27

Extended Versions of Green’s Theorem

Green’s Theorem connects the circulation of a vector field around a closed curve with the behavior of the field across the region enclosed by that curve. It provides a way to replace a line integral around a boundary with a double integral over the interior region, making it especially useful in plane geometry, fluid flow, and vector calculus.Although Green’s Theorem is often introduced using simple regions without gaps, it can also be applied to regions made from several simple parts. This...
Rationalizing Substitutions01:29

Rationalizing Substitutions

Integrals involving non-rational functions are often difficult to evaluate using standard techniques, especially when radicals appear in the integrand. Rationalizing substitution provides a systematic method for simplifying such integrals by converting them into rational forms that are easier to handle.Consider a rod whose linear mass density depends on a constant linear density, a characteristic length, and the distance from the left end of the rod. Determining the total mass requires...