Story perspectives

Revolutionary DNA Discovery Could Transform Oral Health Insights

9/11/2025

Summary

Story summary

Researchers at the University of Tokyo identified Inocles, large extrachromosomal DNA elements in the human oral microbiome, present in about 74% of individuals.
Averaging 350 kilobase pairs, Inocles rank among the largest mobile genetic elements in humans.
They utilized advanced long-read sequencing and preNuc techniques to isolate bacterial DNA from saliva.
Inocles, mainly hosted by Streptococcus salivarius, carry genes for oxidative stress resistance and DNA repair.
This discovery could transform the understanding of oral health and disease, with potential implications for cancer biomarkers.

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Story summary

Researchers at the University of Tokyo identified Inocles, large extrachromosomal DNA elements in the human oral microbiome, present in about 74% of individuals.
Averaging 350 kilobase pairs, Inocles rank among the largest mobile genetic elements in humans.
They utilized advanced long-read sequencing and preNuc techniques to isolate bacterial DNA from saliva.
Inocles, mainly hosted by Streptococcus salivarius, carry genes for oxidative stress resistance and DNA repair.
This discovery could transform the understanding of oral health and disease, with potential implications for cancer biomarkers.