Transcription factor A, mitochondrial mRNA (TFAM mRNA)

Transcription factor A, mitochondrial (TFAM) mRNA is the transcript encoding the TFAM protein, a member of the high-mobility group (HMG) box protein family (UniProt P40926). The TFAM protein is essential for mitochondrial genome maintenance, as it binds and wraps mitochondrial DNA (mtDNA) into nucleoids, protecting it from damage and regulating its copy number (PubMed: 25533306). Furthermore, TFAM is a critical component of the mitochondrial transcription machinery, facilitating the expression of genes necessary for the electron transport chain. In therapeutic contexts, TFAM mRNA is primarily utilized as a substrate for mRNA replacement therapy, where exogenous mRNA is delivered to restore mitochondrial function in diseases characterized by mtDNA depletion or mitochondrial decay, such as certain neurodegenerative disorders and heart failure (PubMed: 31585114). Conversely, in oncology, TFAM mRNA is investigated as a target for knockdown using RNA interference (RNAi) to inhibit the metabolic flexibility and proliferation of cancer cells that rely on mitochondrial biogenesis (PubMed: 28656233). Clinical and preclinical efforts, such as those by Ommaroo (OMM-102), focus on leveraging TFAM mRNA to address mitochondrial dysfunction across a range of metabolic and age-related diseases.

Other names

Mitochondrial transcription factor 1 mRNATCF6 mRNAMTTF1 mRNATranscription factor A, mitochondrial

mRNA replacement therapy to restore mitochondrial transcription factor A protein levels and mitochondrial DNA stability; RNA interference to degrade TFAM mRNA and inhibit mitochondrial biogenesis.