Intracellular PRRs Activation in Targeting the Immune Response Against Fungal Infections

Area of Science:

• Immunology
• Mycology
• Infectious Diseases

Background:

• The innate immune system utilizes pattern recognition receptors (PRRs) to detect fungal pathogen-associated molecular patterns (PAMPs).
• Toll-like receptors (TLRs) and C-type lectin receptors (CLRs) are key PRRs involved in fungal recognition and immune response initiation.
• Intracellular PRRs, including TLR3, TLR7, TLR8, and TLR9, are increasingly recognized for their significance in fungal infections.

Purpose of the Study:

• To review the critical role of intracellular PRRs in the host's immune response to medically relevant fungi.
• To elucidate how intracellular PRRs, particularly those recognizing nucleic acids, influence the control and susceptibility of fungal infections.
• To highlight the dual role of these receptors in either combating or exacerbating mycoses.

Main Methods:

• Literature review of studies investigating PRRs in fungal infections.
• Analysis of the function of intracellular TLRs (TLR3, TLR7, TLR8, TLR9) in response to fungal nucleic acids.
• Focus on specific mycoses such as paracoccidioidomycosis, cryptococcosis, aspergillosis, and candidiasis.

Main Results:

• Intracellular PRRs are vital for recognizing fungal nucleic acids, influencing immune activation.
• The specific role of intracellular PRRs can be context-dependent, aiding control in some infections while potentially harming the host in others.
• These receptors are implicated in the pathophysiology of major fungal diseases.

Conclusions:

• Intracellular pattern recognition receptors play a complex and significant role in managing fungal infections.
• Understanding their function is key to developing targeted therapies for mycoses.
• Further research into intracellular PRR-nucleic acid interactions is essential for controlling fungal diseases.