Send to

Choose Destination
See comment in PubMed Commons below
Front Biosci (Landmark Ed). 2009 Jan 1;14:3465-82.

Role of the permeability transition pore complex in lethal inter-organelle crosstalk.

Author information

Universite de Versailles/SQY, PRES UniverSud Paris, CNRS UMR 8159, 45 avenue des Etats-Unis, 78035 Versailles, France.


The ndoplasmic reticulum (ER) function is critical for multiple cellular activities. Hence, impairment of the physiological function of the ER, such as accumulation of unfolded proteins or disturbance of lumenal calcium homeostasis, leads to an evolutionarily conserved adaptive response known as the ER stress response. Activation of this self-protective pathway gives the cell a chance to restore normal ER function. In the case of prolonged or severe stress conditions, or if the ER dysfunctions cannot be compensated, apoptosis is ultimately activated to eliminate stressed cells. Although the molecular mechanisms involved in ER stress-mediated apoptosis are poorly understood, it is known that ER and mitochondria can cooperate to induce cell death. In this review, we discuss the commitment and development of the lethal crosstalk between ER and mitochondria and focus on the role of the mitochondrial permeability transition pore complex in these processes.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Frontiers in Bioscience
    Loading ...
    Support Center