Overview
- Researchers at Stockholm University and SciLifeLab sequenced RNA from the mammoth Yuka, setting a new age record for ancient RNA.
- The transcripts reveal genes tied to muscle contraction and stress-related metabolism that were active shortly before the animal died.
- Regulatory microRNAs were identified in the tissue, with some carrying mammoth-specific mutations that support authentic ancient origin.
- Preservation proved rare across screened specimens, with only Yuka providing RNA of sufficient quality for detailed analysis.
- Scientists say the finding expands paleogenomic tools to probe ancient physiology and potentially RNA viruses, contingent on similarly exceptional preservation.