Excess RNA, even normal mRNA, can directly damage mitochondria and disrupt cellular energy production, a previously unknown mechanism that may explain damage from viral infections and aging-related diseases.
01Summary
- 01A study led by Texas A&M VMBS found that RNA buildup during poxvirus infections impairs mitochondria, published in Proceedings of the National Academy of Sciences.
- 02Experiments showed mitochondrial damage occurred without immune system activation, indicating direct interference by RNA.
- 03The researchers suspect negatively charged RNA may disrupt the electrical balance across mitochondrial membranes needed for energy production.
- 04Abnormal RNA accumulation is observed in cancers, neurodegenerative diseases and aging disorders, suggesting broader implications.
- 05Poxviruses appear to manage RNA levels to keep infected cells functional long enough for viral replication.
02Why it matters
This discovery reveals a new way cellular stress can occur, which could inform treatments for viral infections, neurodegenerative diseases, and age-related conditions where energy production is compromised.
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