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Published in: BMC Nephrology 1/2004

Open Access 01-12-2004 | Research article

Effects of chemokines on proliferation and apoptosis of human mesangial cells

Authors: Markus Wörnle, Holger Schmid, Monika Merkle, Bernhard Banas

Published in: BMC Nephrology | Issue 1/2004

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Abstract

Background

Proliferation and apoptosis of mesangial cells (MC) are important mechanisms during nephrogenesis, for the maintenance of glomerular homeostasis as well as in renal disease and glomerular regeneration. Expression of chemokines and chemokine receptors by intrinsic renal cells, e.g. SLC/CCL21 on podocytes and CCR7 on MC is suggested to play a pivotal role during these processes. Therefore the effect of selected chemokines on MC proliferation and apoptosis was studied.

Methods

Proliferation assays, cell death assays including cell cycle analysis, hoechst stain and measurement of caspase-3 activity were performed.

Results

A dose-dependent, mesangioproliferative effect of the chemokine SLC/CCL21, which is constitutively expressed on human podocytes was seen via activation of the chemokine receptor CCR7, which is constitutively expressed on MC. In addition, in cultured MC SLC/CCL21 had a protective effect on cell survival in Fas-mediated apoptosis. The CXCR3 ligands IP-10/CXCL10 and Mig/CXCL9 revealed a proproliferative effect but did not influence apoptosis of MC. Both the CCR1 ligand RANTES/CCL5 and the amino-terminally modified RANTES analogue Met-RANTES which blocks CCR1 signalling had no effect on proliferation and apoptosis.

Conclusions

The different effects of chemokines and their respective receptors on proliferation and apoptosis of MC suggest highly regulated, novel biological functions of chemokine/chemokine receptor pairs in processes involved in renal inflammation, regeneration and glomerular homeostasis.
Appendix
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Metadata
Title
Effects of chemokines on proliferation and apoptosis of human mesangial cells
Authors
Markus Wörnle
Holger Schmid
Monika Merkle
Bernhard Banas
Publication date
01-12-2004
Publisher
BioMed Central
Published in
BMC Nephrology / Issue 1/2004
Electronic ISSN: 1471-2369
DOI
https://doi.org/10.1186/1471-2369-5-8

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