P2X7 receptor antagonism in the treatment of cancers.

Abstract:

:ATP-gated P2X7 receptors (P2X7) make a unique family of extracellular ATP-activated plasma membrane ion channels expressed in haematopoietic and epithelial cells. They have been extensively studied in immune cells where their activation leads to the rapid release of pro-inflammatory cytokines and the initiation of the inflammatory cascade. As such, P2X7 represent a pharmaceutical target for the treatment of inflammatory diseases. Recently, P2X7 expression has been found in diverse tumours and has been suggested as a potential cancer cell biomarker. On ATP stimulation, tumour cells can use P2X7 signalling in different scenarios: i) as a reaction to this death-related signal, they can downregulate P2X7 to avoid apoptosis or ii) as a cancer-promoting signal to survive and enhance invasion of new niches. The high levels of extracellular ATP found in tumours could represent a stressful stimulus for cancer cells by initiating P2X7-driven cell death. Therefore, the increased P2X7-dependent invasiveness of cancer cells could be an escape strategy to flee the noxious high level of ATP. The use of specific P2X7 antagonists could be a new alternative way to reduce the development of cancer metastases and improve the efficacy of conventional treatments.

authors

Roger S,Pelegrin P

doi

10.1517/13543784.2011.583918

subject

Has Abstract

pub_date

2011-07-01 00:00:00

pages

875-80

issue

7

eissn

1354-3784

issn

1744-7658

journal_volume

20

pub_type

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