IL-13 receptor isoforms: breaking through the complexity.
Curr Allergy Asthma Rep
; 7(5): 338-45, 2007 Sep.
Article
en En
| MEDLINE
| ID: mdl-17697639
ABSTRACT
Interleukin (IL)-13 is an immunoregulatory cytokine secreted predominantly by activated T-helper type 2 (Th2) cells, and it has been identified as crucial in developing allergic inflammatory responses. Its diverse functions are mediated by a complex receptor system including IL-4 receptor alpha (IL-4Ralpha; CD124) and two other cognate cell surface proteins, IL-13Ralpha1 (CD213a1) and IL-13Ralpha2 (CD213a2). IL-13Ralpha1 forms a heterodimer with IL-4Ralpha that is a signaling IL-13 receptor. In contrast, IL-13Ralpha2 has been thought to be a decoy receptor due to its short cytoplasmic tail. IL-13Ralpha2 exists on the cell membrane, intracellularly, and in soluble form. Recent reports revealed that membrane IL-13Ralpha2 may have some signaling capabilities, and soluble IL-13Ralpha2 is a critical endogenous modulator for IL-13 responses. The receptor has more complicated functions than a simple decoy receptor. In this review, we describe the isoforms of IL-13Ralpha2 and discuss newly revealed functions of IL-13Ralpha2.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Receptores de Interleucina-13
/
Subunidad alfa2 del Receptor de Interleucina-13
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Curr Allergy Asthma Rep
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Estados Unidos