A Double-Edged Role for SIRT7 in Cancer: Can Anti-Cancer Immunity Tip the Balance?

Area of Science:

• Oncology
• Immunology
• Molecular Biology

Background:

• Sirtuin 7 (SIRT7) exhibits dual roles in cancer, potentially promoting or inhibiting tumor growth.
• Emerging evidence highlights SIRT7's significant influence on anti-cancer immunity and the tumor microenvironment.

Purpose of the Study:

• To review the current understanding of SIRT7's role in cancer, focusing on its immunomodulatory functions.
• To explore the mechanisms by which SIRT7 influences anti-cancer immunity and the tumor microenvironment.

Main Methods:

• Comprehensive literature review up to October 2025 using PubMed.
• Identification of tumor-intrinsic and tumor-extrinsic mechanisms linking SIRT7 to anti-cancer immunity.
• Relating SIRT7's known molecular functions (metabolism, genome maintenance, inflammation) to immune regulation.

Main Results:

• SIRT7 directly impacts immune checkpoint expression and T cell metabolic fitness.
• SIRT7 connects tumor-intrinsic processes with immune surveillance.
• SIRT7 influences the tumor microenvironment, affecting metabolism, genomic stability, and inflammation to orchestrate immune evasion or recognition.

Conclusions:

• Understanding the interplay between SIRT7's tumor-intrinsic and immunomodulatory roles is crucial for cancer therapy.
• Targeting SIRT7 requires careful consideration of its multifaceted effects on anti-cancer immunity.
• Rational design of combination strategies integrating SIRT7 modulation with immunotherapy is essential for precision medicine.