The role of PTEN-FAK signaling pathway in metastasis and invasive ability of leukemia cells / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 115-120, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-314524
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of the wild type phosphatase and tensin homolog deleted on chromosome 10 (PTEN), a tumor-suppressor gene on the proliferation and apoptosis of human chronic myeloid leukemia (CML) cells line (K562) in vitro and explore the influence of PTEN-FAK signaling pathway on invasion and metastasis of leukemia cells.</p><p><b>METHODS</b>The recombinant Ad-PTEN gene containing green fluorescent protein gene (Ad-PTEN-GFP) or the empty vector (Ad-GFP) was transfected into K562 cells and fresh leukemia cells from CML patients in blast crisis. The growth of K562 cells was assayed by MTT assay; the apoptosis rate was assessed by flow cytometry (FCM). PTEN and FAK mRNA levels were detected by real-time fluorescent relative- quantification reverse transcriptional PCR (FQ-PCR) and its protein levels by Western blot. The metastasis and invasive ability was examined by transwell chamber assay.</p><p><b>RESULTS</b>The growth of K562 cells was suppressed markedly when Ad-PTEN-GFP was transfected into K562 cells at the 200 multiplicity of infection (MOI). The maximum growth inhibition rate was 35.2%. Transwell results showed the number of cells entered the lower chamber in Ad-GFP group was 9.1 fold more than that in Ad-PTEN-GFP group;The ability of metastasis and invasion of fresh leukemia cells was also suppressed after transfection with Ad-PTEN-GFP. FAK and p-FAK proteins were down-regulated by 0.72 and 0.16 fold lower after transfected with Ad-PTEN-GFP compared with Ad-GFP group.</p><p><b>CONCLUSIONS</b>PTEN gene might inhibit the proliferation, metastasis and invasive ability of leukemia cells via down-regulating FAK expression.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Transfecção
/
Transdução de Sinais
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Movimento Celular
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Infiltração Leucêmica
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Apoptose
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Células K562
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Proliferação de Células
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PTEN Fosfo-Hidrolase
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Quinase 1 de Adesão Focal
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Vetores Genéticos
Limite:
Humanos
Idioma:
Chinês
Revista:
Chinese Journal of Hematology
Ano de publicação:
2009
Tipo de documento:
Artigo
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