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S1P Signalling Differentially Affects Migration of Peritoneal B Cell Populations In Vitro and Influences the Production of Intestinal IgA In Vivo
- Sphingosine-1-phosphate (S1P) regulates the migration of follicular B cells (B2 cells) and directs the positioning of Marginal zone B cells (MZ B cells) within the spleen. The function of S1P signalling in the third B cell lineage, B1 B cells, mainly present in the pleural and peritoneal cavity, has not yet been determined. Methods: S1P receptor expression was analysed in peritoneal B cells by real-time polymerase chain reaction (qPCR). The chemotactic response to S1P was studied in vitro. The role of S1P signalling was further explored in a s1p4 −/− mouse strain. Results: Peritoneal B cells expressed considerable amounts of the S1P receptors 1 and 4 (S1P1 and S1P4, respectively). S1P1 showed differential expression between the distinct peritoneal B cell lineages. While B2 cells showed no chemotactic response to S1P, B1 B cells showed a migration response to S1P. s1p4 −/− mice displayed significant alterations in the composition of peritoneal B cell populations, as well as a significant reduction of mucosal immunoglobulin A (IgA) in the gut. Discussion: S1P signalling influences peritoneal B1 B cell migration. S1P4 deficiency alters the composition of peritoneal B cell populations and reduces secretory IgA levels. These findings suggest that S1P signalling may be a target to modulate B cell function in inflammatory intestinal pathologies.
Author: | Annabel Kleinwort, Felix Lührs, Claus-Dieter Heidecke, Martin Lipp, Tobias Schulze |
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URN: | urn:nbn:de:gbv:9-opus-64751 |
DOI: | https://doi.org/10.3390/ijms19020391 |
ISSN: | 1422-0067 |
Parent Title (English): | International Journal of Molecular Sciences |
Publisher: | MDPI |
Place of publication: | Basel |
Document Type: | Article |
Language: | English |
Date of first Publication: | 2018/01/29 |
Release Date: | 2022/11/25 |
Tag: | B1 B cells; lymphocyte trafficking; mucosal immunity; peritoneal B cells; sphingosine-1-phosphate (S1P) |
GND Keyword: | - |
Volume: | 19 |
Issue: | 2 |
Page Number: | 13 |
Faculties: | Universitätsmedizin / Klinik und Poliklinik für Chirurgie Abt. für Viszeral-, Thorax- und Gefäßchirurgie |
Licence (German): | Creative Commons - Namensnennung |