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3-Amino thioacridone, a selective cyclin-dependent kinase 4 inhibitor, attenuates kainic acid-induced apoptosis in neurons.

Abstract：

:The mechanisms underlying selective neuronal cell death in kainic acid-mediated neurodegeneration are not fully understood. We have recently demonstrated that in cerebellar granule neurons, kainic acid induces the expression of proteins associated with cell-cycle progression. In the present study we show that 3-amino thioacridone (3-ATA), a selective cyclin-dependent kinase 4 inhibitor, attenuates kainic acid-induced apoptosis in cerebellar granule neurons. When neurons were pre-treated with 3-ATA 10 microM for 24 h, they were less susceptible to damage induced by kainic acid 500 microM, since the number of dead cells decreased significantly. In flow cytometry studies using propidium iodide staining, 3-ATA also reduced the ratio of apoptotic cells induced by kainic acid. Moreover, 3-ATA decreased the proportion of cells with a condensed nucleus from 55% to 22%. Our data suggest that the cell cycle pathway is involved in the mechanism of apoptosis mediated by kainic acid and that cyclin-dependent kinase 4 plays a prominent role in this process. 3-ATA may to prevent the apoptosis associated with neurodegenerative disorders without the over-activation of excitatory amino acid receptors.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Verdaguer E,Jordà EG,Canudas AM,Jiménez A,Sureda FX,Rimbau V,Pubill D,Escubedo E,Camarasa J,Pallàs M,Camins A

doi

10.1016/s0306-4522(03)00424-x

keywords:

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

599-603

issue

3

eissn

0306-4522

issn

1873-7544

pii

S030645220300424X

journal_volume

120

pub_type

杂志文章

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