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Updated: Aug 21, 2026
Isolation of Mouse Peritoneal Cavity Cells
Published on: January 28, 2010
Mls presentation by peritoneal cavity B cells
James E Riggs1, Koko F Howell, Justin Taylor
1Department of Biology, Rider University, 2083 Lawrenceville Road, Lawrenceville, NJ 08648-3099, USA. riggs@rider.edu
Abstract:
DBA/2J spleen and peritoneal cells were compared for their ability to present the minor lymphocyte stimulatory superantigen Mls-1a. Although capable of Mls presentation in vivo, peritoneal cells were less effective than spleen cells in vitro. This difference was not due to cell concentration or culture duration. Flow cytometric comparison of spleen and peritoneal B cells revealed no significant differences in cell surface markers needed for cognate interaction with T cells. Resolution of peritoneal B cell subsets by cell sorting revealed that even though B-1 cells were capable of Mls presentation, they were less effective than B-2 cells. Mixing experiments showed that B-1 cells did not inhibit B-2 cell presentation of Mls. In contrast, total peritoneal cells inhibited T cell responses to Mls presented by spleen cells. The peritoneal cavity harbors B cells that can present Mls as well as other cells that can suppress this response.
Insights
Peritoneal cells present Mls-1a superantigen less effectively than spleen cells in vitro, despite containing both B cells and suppressors. B-1 cells are less effective presenters than B-2 cells.
Area of Science:
- Immunology
- Cell Biology
Background:
- The minor lymphocyte stimulatory (Mls) superantigens play a role in T cell activation and immune responses.
- Understanding antigen-presenting cell (APC) function in different anatomical locations is crucial for immunology.
Purpose of the Study:
- To compare the in vitro antigen-presenting capacity of spleen cells versus peritoneal cells for the Mls-1a superantigen.
- To investigate the role of B cell subsets and other peritoneal cells in Mls-1a presentation and T cell response modulation.
Main Methods:
- DBA/2J mice spleen and peritoneal cells were isolated.
- Cells were compared for their ability to present Mls-1a to T cells in vitro.
- Flow cytometry was used to analyze B cell surface markers.
- B cell subsets (B-1 and B-2) were isolated using cell sorting.
- Mixing experiments were conducted to assess presentation and suppression.
Main Results:
- Peritoneal cells were less effective than spleen cells at presenting Mls-1a in vitro.
- No significant differences in T cell interaction markers were found between spleen and peritoneal B cells.
- Peritoneal B-1 cells were capable of Mls-1a presentation but less effective than B-2 cells.
- Total peritoneal cells exhibited an inhibitory effect on T cell responses to Mls-1a presented by spleen cells.
Conclusions:
- The peritoneal cavity contains B cells that can present Mls-1a, but their efficacy differs by subset (B-2 > B-1).
- The peritoneal cavity also harbors non-B cells that can suppress T cell responses to Mls-1a.
- These findings highlight a complex interplay of antigen presentation and suppression within the peritoneal environment.
