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Upregulation of TFAM and mitochondria copy number in human lymphoblastoid cells. | LitMetric

Upregulation of TFAM and mitochondria copy number in human lymphoblastoid cells.

Mitochondrion

Division of Biotechnology, Manipal Life Sciences Centre, Manipal University, Manipal 576104, Karnataka State, India. Electronic address:

Published: March 2014

AI Article Synopsis

Article Abstract

Mitochondria are central to several physiological and pathological conditions in humans. In the present study, we performed copy number analysis of nuclear encoded mitochondrial genes, in peripheral blood mononuclear cells (PBMCs) and its representative lymphoblastoid cells (LCLs). We have observed hyper diploid copies of mitochondrial transcription factor A (TFAM) gene in the LCLs along with increased mtDNA copy number, mitochondrial mass, intracellular ROS and mitochondrial membrane potential, suggesting elevated mitochondrial biogenesis in LCLs. Gene expression analysis confirmed TFAM over-expression in LCLs when compared to PBMC. Based on our observation, we suggest that increased copy number of TFAM gene upregulates its expression, increases mtDNA copy numbers and protects it from oxidative stress induced damage in the transformed LCLs.

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Source
http://dx.doi.org/10.1016/j.mito.2014.01.002DOI Listing

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