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Updated: May 29, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Published on: October 15, 2019

Gut microbiota, immunity, and disease: a complex relationship.

Michele M Kosiewicz¹, Arin L Zirnheld, Pascale Alard

¹Department of Microbiology and Immunology, Health Sciences Center, University of Louisville Louisville, KY, USA.

Frontiers in Microbiology

|September 17, 2011

Summary

The gut microbiota, or commensal bacteria, is crucial for nutrient breakdown and immune system development. Its composition significantly influences immune responses and systemic diseases, including autoimmune conditions, allergies, and cancer.

Keywords:

Th17 Treg allergy autoimmunity cancer commensal bacteria microbiota probiotics

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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

Published on: October 15, 2019

An Intestinal Gut Organ Culture System for Analyzing Host-Microbiota Interactions

An Intestinal Gut Organ Culture System for Analyzing Host-Microbiota Interactions

Published on: June 30, 2021

Area of Science:

Immunology
Microbiology
Gastroenterology

Background:

The immune system eradicates pathogens but maintains symbiosis with gut microbiota.
Gut commensal bacteria are vital for nutrient digestion and preventing pathogen colonization.
Microbiota influences immune system development and function.

Purpose of the Study:

To review the role of gut microbiota in inflammatory and autoimmune diseases.
To discuss the impact of gut microbiota on allergies and cancer development.

Main Methods:

Literature review of studies on gut microbiota and immune responses.
Analysis of research linking specific commensal bacteria to disease outcomes.
Synthesis of findings on systemic effects of gut microbiota.

Main Results:

Gut microbiota composition shapes immune cell differentiation (e.g., Th17, regulatory T cells).
Microbiota impacts systemic immunity and disease progression beyond the gut.
Specific bacteria can induce, exacerbate, inhibit, or protect against various diseases.

Conclusions:

The gut microbiota plays a significant role in the development and progression of inflammatory/autoimmune diseases.
Gut commensal bacteria influence systemic immunity and disease, affecting outcomes in allergy and cancer.
Understanding microbiota composition is key to modulating immune responses and disease.