microRNA miR-17-92 cluster is highly expressed in epidermal Langerhans cells but not required for its development.
Genes Immun
; 15(1): 57-61, 2014 Jan.
Article
em En
| MEDLINE
| ID: mdl-24285176
ABSTRACT
Langerhans cells (LCs) are bone marrow-derived immature skin-residential dendritic cells (DCs) with a life cycle distinct from that of other types of DCs. The mechanisms involved in LC homeostasis and immunological functions are still not clear. MicroRNAs (miRNAs) are a class of short noncoding RNAs that regulate gene expression through either translational repression or mRNA degradation. A recent study showed that specific deletion of total miRNAs in DCs affects the homeostasis and function of only LCs, but not of other types of DCs. The roles of specific individual miRNA in LC development are still lacking. The miRNA miR-17-92 class, encoding miR-17, miR-18, miR-19a, miR-19b, miR-20 and miR-92, plays a very important role in B- and T-cell development and function. Here, we first report that epidermal LCs highly express the miR-17-92 class compared with spleen naive T cells. To further characterize the role of miR-17-92 in LC development, we generated LC-specific miR-17-92 knockout and knock-in mice. Interestingly, LC-specific gain- and loss-of-function of miR-17-92 cluster did not significantly change LC homeostasis, maturation ability, antigen capture and migration to draining lymph nodes. Thus, the miR-17-92 cluster may be functionally redundant and not critically required for LC development and function.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Células de Langerhans
/
MicroRNAs
Limite:
Animals
Idioma:
En
Revista:
Genes Immun
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
BIOLOGIA MOLECULAR
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
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UNITED KINGDOM