The interplay between pathogen-associated and danger-associated molecular patterns: an inflammatory code in cancer?

Area of Science:

• Immunology
• Cancer Biology
• Molecular Biology

Background:

• Inflammation is closely linked to cancer development.
• Pathogen-associated molecular patterns (PAMPs) from microbes and danger-associated molecular patterns (DAMPs) from stressed cells are key inflammatory triggers.
• Pattern recognition receptors (PRRs) on immune cells recognize PAMPs and DAMPs, initiating inflammatory responses.

Purpose of the Study:

• To review evidence supporting a PAMP-DAMP-based inflammatory code.
• To emphasize the role of PAMP-DAMP interactions in cancer immunology and immunotherapy.

Main Methods:

• Review of existing scientific literature on inflammation, PAMPs, DAMPs, PRRs, and cancer immunology.
• Analysis of PAMP-DAMP interactions and their impact on immune cell activation.
• Focus on findings relevant to cancer and potential therapeutic strategies.

Main Results:

• PAMPs and DAMPs are recognized by a limited set of PRRs.
• PAMPs and DAMPs can interact, modulating each other's activation threshold.
• Specific PAMP-DAMP partnerships define inflammatory responses in a predictable manner, termed the 'inflammatory code'.

Conclusions:

• The interplay between PAMPs and DAMPs provides a framework for understanding inflammation.
• Defining PAMP-DAMP complexes is crucial for comprehending inflammatory diseases, particularly cancer.
• This PAMP-DAMP-based inflammatory code has significant implications for cancer immunology and the development of immunotherapies.