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Updated: Aug 11, 2026
10:44
Expansion, Purification, and Functional Assessment of Human Peripheral Blood NK Cells
Published on: February 3, 2011
An NK-like cell limits the adoptive response from "pre-progenitor" B cells
The Australian Journal of Experimental Biology and Medical Science
|December 1, 1982
Summary
A specific spleen cell population, identified by Thy 1.2 and NK 1.2 markers, suppresses immune responses. Eliminating these cells is crucial for accurately assessing B cell proliferation and function.
Area of Science:
- Immunology
- Cell Biology
Background:
- Natural Killer (NK) cells and Thy 1.2 positive cells play roles in immune regulation.
- B cell proliferation and differentiation are critical for adaptive immunity.
Purpose of the Study:
- To investigate the function of a specific spleen cell population in immune responses.
- To understand the role of NK cells in controlling B cell proliferation and differentiation.
- To identify methods for accurately assessing B cell cycle states.
Main Methods:
- Spleen cells from normal and athymic mice were used.
- Experiments involved incubation with 3H-TdR to target dividing cells.
- Elimination of Thy 1 antigen-bearing cells and hydroxyurea incubation were employed.
Main Results:
- A dividing, Thy 1.2 and NK 1.2 positive cell population with suppressive effects was identified.
- Non-specific antigenic stimulation enhanced the suppressive function of these cells.
- Anomalous increases in adoptive responses were observed when targeting dividing B cells, attributed to suppressor cells.
Conclusions:
- NK cells may regulate B cell proliferation and differentiation.
- Prior elimination of Thy 1 antigen-bearing cells is necessary to avoid suppressor cell interference.
- Hydroxyurea incubation provides a reliable method for assessing B cell cycle states.
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