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Magnetic cell sorting for parietal cell purification using a new monoclonal antibody without influence on cell
F Graepler1, U Lauer, M Gregor
1Department of Internal Medicine I, Eberhard-Karls-University, Tübingen, Germany. florian.graepler@unituebingen.de
Journal of Biochemical and Biophysical Methods
|August 26, 1998
Summary
A new method uses a specific antibody to magnetically sort gastric parietal cells, improving yield and preserving cell function. This technique offers a faster, more effective alternative to traditional isolation methods for research.
Area of Science:
- Gastroenterology
- Cell Biology
- Immunology
Background:
- Conventional parietal cell isolation relies on physical properties, requiring time-consuming centrifugation.
- These traditional methods often reduce cell yield and compromise the functional integrity of isolated cells.
Purpose of the Study:
- To develop an alternative method for isolating gastric parietal cells.
- To establish a phenotype-dependent magnetic cell sorting approach using a specific monoclonal antibody.
Main Methods:
- Development of a monoclonal antibody (P1.4D5) targeting rat parietal cells.
- Application of antibody-mediated magnetic cell sorting (MACS) for isolating dispersed gastric mucosal cells.
- Immunohistochemical, biochemical, and functional characterization of the antibody and isolated cells.
Main Results:
- The P1.4D5 antibody enabled rapid magnetic cell sorting, achieving a 2.2- to 3-fold enrichment of parietal cells.
- The antibody demonstrated efficacy in parietal cell-specific immunostaining of both rat and human tissue samples.
- In vitro studies confirmed that P1.4D5 does not negatively impact parietal cell acid production or histamine-stimulated acid secretion.
Conclusions:
- Phenotype-dependent magnetic cell sorting using P1.4D5 is an effective method for isolating gastric parietal cells.
- This immunomagnetic approach enhances cell yield and preserves functional integrity compared to conventional techniques.
- The P1.4D5 antibody is suitable for both cell isolation and immunostaining applications in rat and human gastric research.