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DNA Methylation / Tumor Microenvironment / Rna Regulation · Journal article
Gut Microbes · August 28, 2026
Raises a question worth testing. It does not answer one.
This narrative review proposes that microbial epigenetic regulation acts as a multilevel interface modulating host gene expression through DNA methylation, histone modification, chromatin accessibility, and RNA pathways across diverse animal taxa. The authors acknowledge that most current evidence is associative and that key questions remain unresolved regarding causality, cell-type specificity, persistence, and heritability of microbial-induced epigenetic changes.
Narrative review. Multiple animal systems including mammals, insects, and other vertebrates and invertebrates studied in referenced literature..
Microbial metabolites such as short-chain fatty acids modulate histone acetylation by controlling acetyltransferases and deacetylases. Microbiota-driven immune training can lead to long-lasting chromatin remodeling in innate immune cells. Wolbachia symbionts in insects can alter microRNA levels, RNA methylation, and methyltransferase activity, demonstrating microbial control of host epigenetics extends beyond vertebrates.
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This review presents a conceptual framework for understanding host-microbe interactions through epigenetic mechanisms, but the authors explicitly state that evidence is largely associative and mechanistic rather than definitive. Clinicians should treat the proposed framework as a model requiring experimental validation before translation to practice.
This is a narrative review synthesizing evidence across diverse animal systems to propose a conceptual framework; it raises questions about causality, persistence, and heritability rather than reporting primary experimental results.
As stated by the source record.
This review presents a conceptual framework for understanding host-microbe interactions through epigenetic mechanisms, but the authors explicitly state that evidence is largely associative and mechanistic rather than definitive. Clinicians should treat the proposed framework as a model requiring experimental validation before translation to practice.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
Animals coexist with complex microbial communities that influence their development, immunity, metabolism, and behavior. Evidence shows these effects arise not just from metabolic and immune signaling but also from epigenetic mechanisms that alter host gene expression. Microbial signals can modulate DNA methylation, histone modification, chromatin accessibility, and RNA pathways, reshaping transcription across tissues. This review synthesizes evidence from diverse animal systems to demonstrate how microbial communities influence epigenetic landscapes and contribute to immunity, development, metabolism, and neurobiology. We explore data suggesting that microbial epigenetic interactions extend into the tumor microenvironment, where intratumoral microbes may shape disease progression by remodeling epigenetic states. Comparative studies indicate that microbial regulation of host epigenetics is an evolutionarily conserved mechanism linking environmental signals to phenotype. Despite recent advances, questions remain about causality, cell-type specificity, persistence, and inheritability of these effects. We propose microbial epigenetic regulation as a key interface integrating microbial cues with host physiology and pathology, providing a framework for understanding host-microbe interactions across species.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.