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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/124752

The receptor CMRF35-like molecule-1 (CLM-1) enhances the production of LPS-induced pro-inflammatory mediators during microglial activation

AutorEjarque-Ortiz, Aroa ; Solà, Carme ; Martínez-Barriocanal, Águeda; Schwartz, Simó; Martín, Margarita; Peluffo, Hugo; Sayós, Joan
Fecha de publicación30-abr-2015
EditorPublic Library of Science
CitaciónPLoS ONE 10(4): e0123928 (2015)
Resumen© 2015 Ejarque-Ortiz et al. CMRF35-like molecule-1 (CLM-1) belongs to a receptor family mainly expressed in myeloid cells that include activating and inhibitory receptors. CLM-1 contains two ITIMs and a single immunoreceptor tyrosine-based switch motif (ITSM), although also displays a binding site for p85α regulatory subunit of PI3K. By using murine primary microglial cultures, we show the presence of all CLM members in microglial cells and characterize the expression of CLM-1 both in basal conditions and during microglial activation. The TLR4 agonist lipopolysaccharide (LPS) and the TLR3 agonist polyinosinic - polycytidylic acid (Poly I:C) induce an increase in microglial CLM-1 mRNA levels in vitro, whereas the TLR2/6 heterodimer agonist peptidoglycan (PGN) produces a marked decrease. In this study we also describe a new soluble isoform of CLM-1 that is detected at mRNA and protein levels in basal conditions in primary microglial cultures. Interestingly, CLM-1 engagement enhances the transcription of the pro-inflammatory mediators TNFα, COX-2 and NOS-2 in microglial cells challenged with LPS. These results reveal that CLM-1 can acts as a co-activating receptor and suggest that this receptor could play a key role in the regulation of microglial activation.
Versión del editorhttp://dx.doi.org/10.1371/journal.pone.0123928
Identificadoresdoi: 10.1371/journal.pone.0123928
issn: 1932-6203
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