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Microbicides for HIV/AIDS. 1. Electrophoretic fingerprinting the H9 cell model system
R L Rowell1, D Fairhurst, S Key
1Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA.
Langmuir : the ACS Journal of Surfaces and Colloids
|October 19, 2005
Summary
Researchers created the first electrophoretic fingerprint for CD4+ T-cells (H9). This zwitterionic cell surface characterization impacts microbicide design and development.
Area of Science:
- Cell Biology
- Biophysics
- Immunology
Background:
- CD4+ T-cells (H9) are crucial in immune responses.
- Understanding cell surface properties is vital for targeted therapies, including microbicides.
Purpose of the Study:
- To generate the first electrophoretic fingerprint of H9 CD4+ T-cells.
- To characterize the H9 cell surface charge properties.
- To inform the design of effective microbicides.
Main Methods:
- Electrophoretic fingerprinting using 2D and 3D representations.
- Utilizing commercial instrumentation with auto-titrator capabilities.
- Analysis of cell mobility across varying pH and conductivity.
Main Results:
- A novel electrophoretic fingerprint for H9 CD4+ T-cells was established.
- Hysteresis was identified as a potential second-order effect in 2D analysis.
- The H9 cell surface exhibits zwitterionic characteristics, with prominent carboxyl groups at high pH and amino groups at low pH.
Conclusions:
- The H9 cell surface is zwitterionic, influencing its interaction with microbicides.
- Electrophoretic fingerprinting provides a reliable method for cell surface characterization.
- These findings have significant implications for the selection and design of microbicide actives.
