Down-Regulation of Laminin (LN)- α5 is Associated with Preeclampsia and Impairs Trophoblast Cell Viability and Invasiveness Through PI3K Signaling Pathway.
Cell Physiol Biochem
; 51(5): 2030-2040, 2018.
Article
em En
| MEDLINE
| ID: mdl-30522103
ABSTRACT
BACKGROUND/AIMS:
Preeclampsia (PE) is a gestational disorder defined as hypertension and proteinuria, which is deemed a major cause of maternal and neonatal mortality and morbidity worldwide. The aim of this study was to investigate the expression patterns of placental laminin (LN)-α5 expression in normal and PE pregnancies, as well as evaluating the effects of LN-α5 on trophoblast proliferation, apoptosis, and invasion.METHODS:
LN-α5 expression levels were examined by reverse-transcriptase polymerase chain reaction (RT-PCR), and further confirmed by western blotting and immunofluorescence staining. Cell proliferation and apoptosis were measured by CCK-8 assay and flow cytometry. Cell invasion was assessed by matrigel-based transwell assay. LN-α5 DNA methylation in placentas was determined by bisulfite sequencing PCR (BSP).RESULTS:
LN-α5 expression levels in PE placentas were significantly lower than that of normal pregnancies. Deficiency in LN-α5 expression resulted in decreased trophoblast proliferation and invasion but increased cell apoptosis, meanwhile, PI3K/AKT/mTOR signaling pathway was impaired by LN-α5 silencing. LN-α5 promoter methylation didn't show significant difference between PE and normal placentas.CONCLUSION:
LN-α5 downregulation is associated with PE placenta and impairs trophoblast viability and invasiveness, which could be a causative factor of PE pathogenesis.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pré-Eclâmpsia
/
Trofoblastos
/
Transdução de Sinais
/
Regulação para Baixo
/
Laminina
/
Fosfatidilinositol 3-Quinases
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article