Commentary: Reconciling Hygiene and Cleanliness: A New Perspective from Human Microbiome

Area of Science:

• Microbiology
• Human Physiology
• Immunology

Background:

• Humans and environmental microorganisms have co-evolved for millions of years, establishing a symbiotic relationship.
• The human microbiome plays a crucial role in developing early immunity and providing essential nutrients.
• Microbial genes are a vital source of essential amino acids and fatty acids for the human body.

Purpose of the Study:

• To elucidate the mechanism by which the human body obtains essential nutrients from the microbiome.
• To highlight the role of xenophagy in nutrient acquisition from microorganisms.

Main Methods:

• The study focuses on the physiological process of xenophagy.
• It describes xenophagy as an immune effector mechanism.

Main Results:

• Xenophagy captures microorganisms interacting with gastrointestinal epithelial cells.
• Degradation of these microorganisms by xenophagy yields essential nutrients for the human body.
• This process converts microbial components into usable amino acids and fatty acids.

Conclusions:

• Xenophagy is a key process for nutrient harvesting from the human microbiome.
• This immune mechanism contributes significantly to human nutrition and well-being.
• The symbiotic relationship between humans and microbes is crucial for health.