HAX1 deficiency: impact on lymphopoiesis and B-cell development.
Eur J Immunol
; 40(11): 3161-72, 2010 Nov.
Article
en En
| MEDLINE
| ID: mdl-20865787
ABSTRACT
HAX1 was originally described as HS1-associated protein with a suggested function in receptor-mediated apoptotic and proliferative responses of lymphoid cells. Recent publications refer to a complex and multifunctional role of this protein. To investigate the in vivo function of HAX1 (HS1-associated protein X1) in B cells, we generated a Hax1-deficient mouse strain. Targeted deletion of Hax1 resulted in premature death around the age of 12 wk accompanied by a severe reduction of lymphocytes in spleen, thymus and bone marrow. In the bone marrow, all B-cell populations were lost comparably. In the spleen, B220(+) cells were reduced by almost 70%. However, as investigated by adoptive transfer experiments, this impairment is not exclusively B-cell intrinsic and we hypothesize that a HAX1-deficient environment cannot sufficiently provide the essential factors for proper lymphocyte development, trafficking and survival. Hax1(-/-) B cells show a significantly reduced expression of CXCR4, which might have an influence on the observed defects in B-cell development.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Linfocitos B
/
Proteínas
/
Movimiento Celular
/
Linfopoyesis
Límite:
Animals
Idioma:
En
Revista:
Eur J Immunol
Año:
2010
Tipo del documento:
Article
País de afiliación:
Austria