Role of Bid protein in the mitochondria and Endoplasmic Reticulum associated apoptotic pathway / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 466-469, 2007.
Artigo
em Chinês
| WPRIM
| ID: wpr-262999
ABSTRACT
<p><b>OBJECTIVE</b>To explore the role of Bid protein in the mitochondria and endoplasmic reticulum (ER) associated apoptotic pathway.</p><p><b>METHODS</b>Apoptosis of MUTZ-1 cells induced by homoharringtonine (HHT) was measured by FACS. Mitochondria and ER associated apoptotic pathway was detected by RT-PCR and Western blotting. And the translocation of Bid protein was measured by laser scanning confocal microscope (LSCM).</p><p><b>RESULTS</b>After exposure of MUTZ-1 to HHT at 0.05 microg/ml for 24 h, typical ER-stress phenomenon induced apoptotic cells and release of Ca2+ from the cytosolic Ca2+ storage and the loss of mitochondrial membrane potential were observed. RT-PCR analysis revealed that mRNAs for ER stress-associated proapoptotic factor were markedly increased at 4 h after 0.05 microg/ml HHT treatment and peaked at 12 h, then decreased steady. Activation of caspase protein was also observed at 8 h. The translocation of Bid protein from ER to mitochondria was observed at 12 h after HHT treatment.</p><p><b>CONCLUSION</b>HHT can induce MUTZ-1 cells apoptosis. The cell death may be likely mediated by the ER stress pathway as well as mitochondrial pathway and Bid protein may be the cross talk of the two apoptotic pathways.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Fisiologia
/
Fatores de Transcrição
/
Linhagem Celular
/
Cálcio
/
Apoptose
/
Proteínas de Ligação a DNA
/
Retículo Endoplasmático
/
Proteína Agonista de Morte Celular de Domínio Interatuante com BH3
/
Caspase 3
Limite:
Humanos
Idioma:
Chinês
Revista:
Chinese Journal of Hematology
Ano de publicação:
2007
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS