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Strategies for Tracking Anastasis, A Cell Survival Phenomenon that Reverses Apoptosis
Published on: February 16, 2015
Adenine nucleotide translocase family: four isoforms for apoptosis modulation in cancer
C Brenner1, K Subramaniam, C Pertuiset
1Univ Paris-Sud, Châtenay-Malabry, France. catherine.brenner-jan@u-psud.fr
Abstract:
Mitochondria have important functions in mammalian cells as the energy powerhouse and integrators of the mitochondrial pathway of apoptosis. The adenine nucleotide translocase (ANT) is a family of proteins involved in cell death pathways that perform distinctly opposite functions to regulate cell fate decisions. On the one hand, ANT catalyzes the adenosine triphosphate export from the mitochondrial matrix to the intermembrane space with the concomitant import of ADP from the intermembrane space to the matrix. On the other hand, during periods of stress, ANT could function as a lethal pore and trigger the process of mitochondrial membrane permeabilization, which leads irreversibly to cell death. In human, ANT is encoded by four homologous genes, whose expression is not only tissue specific, but also varies according to the pathophysiological state of the cell. Recent evidence revealed a differential role of the ANT isoforms in apoptosis and a deregulation of their expression in cancer. In this review, we introduce the current knowledge of ANT in apoptosis and cancer cells and propose a novel classification of ANT isoforms.
Insights
Adenine nucleotide translocase (ANT) proteins regulate cell death by exporting ATP or forming pores. This review classifies ANT isoforms and discusses their roles in apoptosis and cancer.
Area of Science:
- Mitochondrial biology
- Cell death pathways
- Biochemistry
Background:
- Mitochondria are central to cellular energy production and apoptosis.
- Adenine nucleotide translocase (ANT) proteins have dual roles in regulating cell fate.
- ANT function is critical in cellular stress responses and apoptosis.
Purpose of the Study:
- To review the current understanding of ANT in apoptosis and cancer.
- To propose a novel classification of ANT isoforms.
- To highlight the differential roles of ANT isoforms in cell death.
Main Methods:
- Literature review of ANT function in apoptosis and cancer.
- Analysis of existing data on ANT gene expression.
- Synthesis of information on ANT isoform roles.
Main Results:
- ANT proteins can either promote cell survival or trigger cell death.
- ANT expression is tissue-specific and altered in pathophysiological states.
- Evidence suggests distinct roles for ANT isoforms in apoptosis and cancer.
Conclusions:
- ANT isoforms play complex and differential roles in apoptosis.
- Dysregulation of ANT expression is implicated in cancer development.
- A new classification of ANT isoforms is proposed based on their functions.
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