Developmentally regulated expression of survivin in the human thymus.
Hum Immunol
; 63(2): 101-7, 2002 Feb.
Article
em En
| MEDLINE
| ID: mdl-11821157
ABSTRACT
Survivin is a member of the inhibitor-of-apoptosis (IAP) family. It has been reported to be expressed during development, but not in differentiated normal tissue. However, its expression has been reported to be high in the thymus. To assess the role of survivin in human thymocyte development, we investigated the expression of survivin using reverse-transcriptase-polymerase chain reaction, flow cytometry, and immunohistochemistry in freshly isolated human thymocytes. Survivin was expressed in all thymocyte subsets but its expression level was developmentally regulated. Its expression was low in the double negative (DN) thymocytes, upregulated in double positive (DP) thymocytes, and was highest in the T-cell receptor(high), late DP thymocytes; it was then downregulated in the single positive thymocytes and negative in the peripheral blood T cells. Moreover, there was a positive correlation between the expression of survivin and that of CD69 and Bcl-2 in DP thymocytes. These results suggest that survivin may play an important role in the T-cell development in the human thymus.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Timo
/
Proteínas Cromossômicas não Histona
/
Proteínas Associadas aos Microtúbulos
Limite:
Child
/
Humans
/
Newborn
Idioma:
En
Revista:
Hum Immunol
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Japão