Adriamycin induces H2AX phosphorylation in human spermatozoa / 亚洲男科学杂志(英文版)
Asian Journal of Andrology
; (6): 749-757, 2008.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-359914
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>AIM</b>To investigate whether adriamycin induces DNA damage and the formation of gammaH2AX (the phosphorylated form of histone H2AX) foci in mature spermatozoa.</p><p><b>METHODS</b>Human spermatozoa were treated with adriamycin at different concentrations. gammaH2AX was analyzed by immunofluorescent staining and flow cytometry and double-strand breaks (DSB) were detected by the comet assay.</p><p><b>RESULTS</b>The neutral comet assay revealed that the treatment with adriamycin at 2 microg/mL for different times (0.5, 2, 8 and 24 h), or for 8 h at different concentrations (0.4, 2 and 10 microg/mL), induced significant DSB in spermatozoa. Immunofluorent staining and flow cytometry showed that the expression of gH2AX was increased in a dose-dependent and time-dependant manner after the treatment of adriamycin. Adriamycin also induced the concurrent appearance of DNA maintenance/repair proteins RAD50 and 53BP1 with gammaH2AX in spermatozoa. Wortmannin, an inhibitor of the phosphatidylinositol 3-kinase (PI3K) family, abolished the co-appearance of these two proteins with gammaH2AX.</p><p><b>CONCLUSION</b>Human mature spermatozoa have the same response to DSB-induced H2AX phosphorylation and subsequent recruitment of DNA maintenance/repair proteins as somatic cells.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Fosforilação
/
Espermatozoides
/
Dano ao DNA
/
Histonas
/
Doxorrubicina
/
Células Cultivadas
/
Ensaio Cometa
/
Biologia Celular
/
Enzimas Reparadoras do DNA
Limite:
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Asian Journal of Andrology
Ano de publicação:
2008
Tipo de documento:
Artigo