Influence of microbial environment on autoimmunity.

Area of Science:

• Immunology
• Autoimmunity
• Microbiology

Background:

• Adaptive immunity activation typically requires innate immune signals and microbial stimuli.
• The role of this innate-adaptive connection in autoimmune diseases (adaptive autoimmunity) is not fully understood.
• The microbial environment likely impacts the innate-adaptive link in autoimmunity.

Purpose of the Study:

• To review experimental findings on autoimmunity under sterile versus non-sterile conditions.
• To assess the role of innate immune receptor signaling in autoimmune pathogenesis.
• To propose a classification of autoimmune diseases based on their adherence to innate-adaptive connection rules.

Main Methods:

• Integration of experimental data analyzing autoimmunity in different environmental conditions.
• Review of studies investigating innate immune receptor signaling in autoimmunity.
• Synthesis of findings to categorize autoimmune disease mechanisms.

Main Results:

• Autoimmunity can be studied in both sterile and non-sterile environments.
• Innate immune receptor signaling plays a role in the development of autoimmunity.
• Evidence suggests a dichotomy in autoimmune disease pathogenesis.

Conclusions:

• Autoimmune diseases may be classified into two groups based on their pathogenesis.
• One group follows the established rules of the innate-adaptive immune connection.
• The other group's pathogenesis operates outside these conventional rules, influenced by the microbial environment.