Abstract:
:Apoptosis contributes to cell death after cerebral ischaemia. A quantitative proteomics approach has been employed to define alterations in protein levels in apoptosis induced with staurosporine (STS). Human neuroblastoma derived SH-SY5Y cells were treated with STS (500 nM for 6 h) to induce apoptosis. Quantitative 2-DE was used to determine the changing protein levels with MALDI-TOF MS identification of proteins. Of the 154 proteins analysed, 13 proteins were significantly altered as a result of the apoptotic stimulus; ten of the proteins showed an increase in level with STS and were identified as heat shock cognate 71 (Hsc71), two isoforms of heat shock protein 70 (Hsp70), glucose regulated protein 78 (GRP78), F-actin capping protein, stress-induced phosphoprotein 1, chromatin assembly factor 1 (CAF-1), protein disulphide isomerase A3 (PDI A3) precursor, transitional ER ATPase and actin interacting protein 1 (AIP 1). Three proteins which displayed significant decrease in levels with STS were identified as tubulin, vimentin and glucose regulated protein 94 (GRP94). The functional roles and subcellular locations of these proteins collectively indicate that STS-induced apoptosis provokes induces an unfolded protein response involving molecular chaperones, cochaperones and structural proteins indicative of ER stress.
journal_name
Proteomicsjournal_title
Proteomicsauthors
Short DM,Heron ID,Birse-Archbold JL,Kerr LE,Sharkey J,McCulloch Jdoi
10.1002/pmic.200600964subject
Has Abstractpub_date
2007-09-01 00:00:00pages
3085-96issue
17eissn
1615-9853issn
1615-9861journal_volume
7pub_type
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