HDAC1 and HDAC2 collectively regulate intestinal stem cell homeostasis.
FASEB J
; 29(5): 2070-80, 2015 May.
Article
em En
| MEDLINE
| ID: mdl-25648995
ABSTRACT
Histone deacetylases (HDACs) are posttranslational modifiers that deacetylate proteins. Despite their crucial role in numerous biological processes, the use of broad-range HDAC inhibitors (HDACi), has shown clinical efficacy. However, undesired side effects highlight the necessity to better understand the biology of different HDACs and target the relevant HDACs. Using a novel mouse model, in which HDAC1 and HDAC2 can be simultaneously deleted in the intestine of adult mice, we show that the simultaneous deletion of HDAC1 and HDAC2 leads to a rapid loss of intestinal homeostasis. Importantly, this deletion cannot be sustained, and 8 days after initial ablation, stem cells that have escaped HDAC1 or HDAC2 deletion swiftly repopulate the intestinal lining. In vitro ablation of HDAC1 and HDAC2 using intestinal organoid cultures resulted in a down-regulation of multiple intestinal stem cell markers and functional loss of clonogenic capacity. Importantly, treatment of wild-type organoids with class I-specific HDACi MS-275 also induced a similar loss of stemness, providing a possible rationale for the gastrointestinal side effects often observed in HDACi-treated patients. In conclusion, these data show that HDAC1 and HDAC2 have a redundant function and are essential to maintain intestinal homeostasis.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Células-Tronco
/
Histona Desacetilase 1
/
Histona Desacetilase 2
/
Homeostase
/
Intestinos
Limite:
Animals
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article