Yeast acetic acid-induced programmed cell death can occur without cytochrome c release which requires metacaspase YCA1

Abstract

To investigate the role of cytochrome c (cyt c) release in yeast acetic acid-induced programmed celldeath (AA-PCD), wild type (wt) and cells lacking metacaspase (Dyca1), cytochrome c (Dcyc1,7) andboth (Dcyc1,7Dyca1) were compared for AA-PCD occurrence, hydrogen peroxide (H2O2) productionand caspase activity. AA-PCD occurs in Dcyc1,7 and Dcyc1,7Dyca1 cells slower than in wt, but similarto that in Dyca1 cells, in which no cytochrome c release occurs. Both H2O2 production and caspaseactivation occur in these cells with early and extra-activation in Dcyc1,7 cells. We conclude thatalternative death pathways can be activated in yeast AA-PCD, one dependent on cyt c release, whichrequires YCA1, and the other(s) independent on it.


Tutti gli autori

  • Guaragnella N.; Bobba A.; Passarella S.; Marra E.; Giannattasio S.

Titolo volume/Rivista

FEBS letters


Anno di pubblicazione

2010

ISSN

0014-5793

ISBN

Non Disponibile


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Nessuna citazione

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Settori ERC

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