Innate and Adaptive Immune Responses Against Microsporidia Infection in Mammals.

Area of Science:

• Immunology
• Infectious Diseases
• Microbiology

Background:

• Microsporidia are obligate intracellular eukaryotic pathogens.
• They infect both immunocompromised and immunocompetent mammals, including humans.
• Both innate and adaptive immunity are vital in controlling microsporidian infections.

Purpose of the Study:

• To review the cellular and molecular responses of the innate immune system against microsporidian infection.
• To review the cellular and molecular responses of the adaptive immune system against microsporidian infection.
• To discuss the interplay between innate and adaptive immunity in controlling microsporidiosis.

Main Methods:

• This is a review article.
• Literature search on cellular and molecular immune responses to microsporidia.
• Synthesis of information on immune cell functions and molecular mediators.

Main Results:

• Innate immune cells like gamma delta T cells, NKs, macrophages, and DCs partially control infection and present antigens.
• Innate immune cells prime and enhance adaptive immune responses via cytokines and surface molecules.
• Adaptive immunity, including cytotoxic T lymphocyte (CTL) and humoral responses, is critical for pathogen elimination and immune regulation.

Conclusions:

• Both innate and adaptive immune systems are essential for controlling microsporidian infections.
• Understanding these immune mechanisms can inform therapeutic strategies.
• Further research into immune cell functions and molecular pathways is warranted.