STING, a promising target for small molecular immune modulator: A review

Area of Science:

• Immunology and Molecular Biology
• Innate Immune Response
• Therapeutic Target Discovery

Background:

• The Stimulator of Interferon Genes (STING) protein is a critical component of the innate immune system.
• STING activation initiates signaling cascades, leading to the production of type I interferons (IFNs) and inflammatory cytokines.
• This pathway is increasingly recognized for its therapeutic potential in treating infections, inflammation, and cancers.

Purpose of the Study:

• To provide a comprehensive overview of STING's structure, function, and regulation.
• To summarize the landscape of STING activators and inhibitors, including cyclic dinucleotides (CDNs) and synthetic small molecules.
• To highlight the discovery, development, and modification strategies for STING modulators and their therapeutic applications.

Main Methods:

• Literature review and synthesis of existing research on STING.
• Analysis of canonical and noncanonical cyclic dinucleotides (CDNs) as STING activators.
• Examination of synthetic small molecules targeting STING activation or inhibition.
• Summary of biological evaluation methods for assessing STING modulator activity.

Main Results:

• Detailed exposition of STING's molecular structure and regulatory mechanisms.
• Illustration of how CDNs and small molecules modulate STING activity.
• Discussion of the efficacy of STING modulators in various disease models.
• Compilation of methods for evaluating the biological activity of STING-targeting compounds.

Conclusions:

• STING is a pivotal target for immunotherapy, with diverse small molecule modulators under development.
• Understanding STING's intricate pathways is crucial for designing effective therapeutic strategies.
• Further research into STING agonists and antagonists holds significant promise for treating a range of diseases.