The relationship between the gut microbiome and host gene expression: a review

Area of Science:

• Microbiology
• Genomics
• Host-Microbiome Interactions

Background:

• Host-microbiome interactions are increasingly recognized for their health implications.
• The precise mechanisms by which the gut microbiome influences host gene expression are still being elucidated.
• This relationship is bidirectional, with the host also affecting the microbiome.

Purpose of the Study:

• To review recent literature on the intersection of gut microbiome and host gene expression.
• To summarize key findings and themes across studies in this emerging field.
• To highlight the potential of new technologies for future research.

Main Methods:

• Review of existing scientific literature.
• Analysis of studies utilizing model organisms, human biopsies, and cell cultures.
• Discussion of emerging techniques such as single-cell RNA sequencing and organoid generation.

Main Results:

• The gut microbiome regulates critical host pathways, including immune development and energy metabolism.
• Microbiome influences host gene expression through chromatin remodeling, differential splicing, and epigenetic alterations.
• Host gene expression also impacts the gut microbiome, indicating a complex interplay.

Conclusions:

• The gut microbiome is a significant regulator of host gene expression with implications for disease.
• Further research, aided by advanced techniques, will deepen our understanding of this cross-kingdom communication.
• Investigating the microbiome-gene expression axis offers insights into physiological processes and overall health.