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Related Concept Videos

Chromatography: Introduction01:10

Chromatography: Introduction

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Chromatography is a technique used to separate compounds based on differences of partitioning between two phases, the stationary phase and the mobile phase.
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
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Types Of Column Chromatography01:29

Types Of Column Chromatography

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The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
When the...
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Diffusion on Chromatography Columns01:07

Diffusion on Chromatography Columns

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In column chromatography, when an analyte is introduced as a narrow band at the top of the column, the solutes begin to separate and broaden, developing a Gaussian profile. This broadening occurs due to various factors, such as longitudinal diffusion.
Longitudinal diffusion occurs when the solute molecules in the mobile phase diffuse from the more concentrated center of the chromatographic band to the more dilute regions on either side, both towards and against the flow direction. This...
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Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

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Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
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Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

3.0K
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
3.0K
Affinity Chromatography01:03

Affinity Chromatography

3.1K
Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...
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Chromatography's evolution, unlocking affinity's new solution: potential-controlled affinity membrane chromatography.

Tobias Steegmüller1, Maeliss Nzokam1, Christian Sieg2

  • 1School of Engineering and Design, Technical University of Munich Boltzmannstraße 15 85748 Garching bei München Germany s.berensmeier@tum.de.

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A new potential-controlled method efficiently purifies antibodies from blood plasma and cell cultures. This breakthrough in affinity chromatography offers a cost-effective and sustainable alternative for antibody therapeutics.

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Area of Science:

  • Biotechnology
  • Biochemistry
  • Chemical Engineering

Background:

  • Traditional antibody purification methods, such as affinity chromatography, are often costly and inefficient.
  • High costs present a significant barrier to advancing antibody-based immunotherapies and therapeutics.

Purpose of the Study:

  • To introduce a novel potential-controlled affinity membrane chromatography (PCAMC) for antibody purification.
  • To demonstrate the efficiency and effectiveness of PCAMC in purifying antibodies from human blood plasma and cell culture supernatant.

Main Methods:

  • Development and application of a potential-controlled elution method using Protein A affinity membranes.
  • Optimization of electrical potential for antibody elution (target range: +2.5 to 3 V).
  • Analysis of antibody integrity using Dynamic Light Scattering (DLS), Size-Exclusion Chromatography with Multi-Angle Light Scattering (SEC-MALS), and Surface-Plasmon-Resonance (SPR).

Main Results:

  • Achieved efficient elution of up to 95% of bound antibodies.
  • Demonstrated superior retention of antibody integrity, confirmed by DLS, SEC-MALS, and SPR analyses.
  • Eliminated the need for buffer exchange during the purification process.

Conclusions:

  • Potential-controlled affinity membrane chromatography (PCAMC) is a viable and revolutionary alternative to conventional antibody purification techniques.
  • PCAMC offers increased efficiency, improved sustainability, and cost-effectiveness for antibody purification.
  • This technology paves the way for more accessible and eco-friendly antibody therapeutics.