Decoding mitochondrial-nuclear (epi)genome interactions: the emerging role of ncRNAs

Area of Science:

• Cellular Biology
• Molecular Biology
• Genomics

Background:

• Bidirectional communication between mitochondria and the nucleus is crucial for physiological processes.
• The nuclear epigenome plays a key role in mediating mitochondrial-nuclear crosstalk.
• Non-coding RNAs (ncRNAs) are increasingly recognized for their regulatory functions in cellular processes.

Purpose of the Study:

• To review the role of mitochondrial-encoded ncRNAs in mediating communication between mitochondria and the nuclear genome.
• To highlight the involvement of mitochondrial ncRNAs in retrograde signaling pathways.
• To discuss other biological functions of mitochondrial ncRNAs, including protein import and cell signaling regulation.

Main Methods:

• Literature review focusing on mitochondrial-encoded ncRNAs.
• Analysis of studies investigating retrograde signaling pathways.
• Synthesis of current knowledge on ncRNA functions in mitochondrial-nuclear communication.

Main Results:

• Mitochondrial-encoded ncRNAs act as key mediators in the communication between mitochondria and the nucleus.
• These ncRNAs are involved in transmitting environmental stress signals to the nucleus, altering gene expression.
• Mitochondrial ncRNAs also contribute to protein import into mitochondria and regulate cellular signaling pathways.

Conclusions:

• Mitochondrial-encoded ncRNAs are critical players in mitochondrial-nuclear communication, particularly in stress response.
• Understanding these ncRNAs offers insights into diseases associated with disrupted cellular signaling.
• Further research into mitochondrial ncRNAs can uncover novel therapeutic targets and diagnostic markers.